/* ================================================================
   FORGE44 — DESIGN SYSTEM
   Light-first, Orange accent, Base44-inspired spacious layout
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,300;0,14..32,400;0,14..32,500;0,14..32,600;0,14..32,700;0,14..32,800;0,14..32,900;1,14..32,400&family=JetBrains+Mono:wght@400;500;700&display=swap');

/* ================================================================
   DESIGN TOKENS — LIGHT MODE (default)
   ================================================================ */
:root, [data-theme="light"] {
  --bg:            #FAFAF8;
  --bg-alt:        #F3F3F0;
  --surface:       #FFFFFF;
  --surface-2:     #F7F7F5;
  --border:        rgba(0,0,0,0.09);
  --border-mid:    rgba(0,0,0,0.13);
  --border-strong: rgba(0,0,0,0.20);
  --text-1:        #111111;
  --text-2:        #444444;
  --text-3:        #777777;
  --text-4:        #AAAAAA;
  --accent:        #FF6300;
  --accent-2:      #FF8033;
  --accent-hover:  #E55800;
  --accent-bg:     rgba(255,99,0,0.07);
  --accent-border: rgba(255,99,0,0.22);
  --hero-sky-1:    #C2E8FF;
  --hero-sky-2:    #D8F0FF;
  --hero-sky-3:    #EBF7FF;
  --hero-sky-4:    #F5FCFF;
  --hero-sky-5:    #FAFAF8;
  --shadow-xs:     0 1px 4px rgba(0,0,0,0.06);
  --shadow-sm:     0 2px 10px rgba(0,0,0,0.07);
  --shadow-md:     0 6px 24px rgba(0,0,0,0.09);
  --shadow-lg:     0 16px 56px rgba(0,0,0,0.11);
  --shadow-xl:     0 28px 80px rgba(0,0,0,0.13);
  --pass:          #16A34A;
  --pass-bg:       rgba(22,163,74,0.09);
  --pass-border:   rgba(22,163,74,0.22);
  --warn:          #D97706;
  --warn-bg:       rgba(217,119,6,0.09);
  --fail:          #DC2626;
  --fail-bg:       rgba(220,38,38,0.09);
  --note:          #2563EB;
  --note-bg:       rgba(37,99,235,0.09);
  --repair:        #7C3AED;
  --repair-bg:     rgba(124,58,237,0.09);
  --code-bg:       #1A1B26;
  --code-text:     #C0CAF5;
  --font-sans:     'Inter', ui-sans-serif, system-ui, sans-serif;
  --font-mono:     'JetBrains Mono', 'Cascadia Code', monospace;
  --r-sm:          8px;
  --r-md:          12px;
  --r-lg:          16px;
  --r-xl:          24px;
  --r-2xl:         32px;
  --r-pill:        999px;
  --t-fast:        120ms ease;
  --t-base:        200ms ease;
  --t-slow:        350ms ease;
  --nav-h:         68px;
}

/* ================================================================
   DESIGN TOKENS — DARK MODE
   ================================================================ */
[data-theme="dark"] {
  --bg:            #0E0E0C;
  --bg-alt:        #151512;
  --surface:       #1C1C1A;
  --surface-2:     #242420;
  --border:        rgba(255,255,255,0.07);
  --border-mid:    rgba(255,255,255,0.11);
  --border-strong: rgba(255,255,255,0.18);
  --text-1:        #F0F0EE;
  --text-2:        #AAAAAA;
  --text-3:        #777777;
  --text-4:        #444444;
  --accent:        #FF7A1A;
  --accent-2:      #FF9A4A;
  --accent-hover:  #FF8C33;
  --accent-bg:     rgba(255,122,26,0.10);
  --accent-border: rgba(255,122,26,0.28);
  --hero-sky-1:    #091825;
  --hero-sky-2:    #0C1E2F;
  --hero-sky-3:    #0F2238;
  --hero-sky-4:    #111A26;
  --hero-sky-5:    #0E0E0C;
  --shadow-xs:     0 1px 4px rgba(0,0,0,0.35);
  --shadow-sm:     0 2px 10px rgba(0,0,0,0.40);
  --shadow-md:     0 6px 24px rgba(0,0,0,0.45);
  --shadow-lg:     0 16px 56px rgba(0,0,0,0.50);
  --shadow-xl:     0 28px 80px rgba(0,0,0,0.60);
  --pass:          #4ADE80;
  --pass-bg:       rgba(74,222,128,0.10);
  --pass-border:   rgba(74,222,128,0.22);
  --warn:          #FBBF24;
  --warn-bg:       rgba(251,191,36,0.10);
  --fail:          #F87171;
  --fail-bg:       rgba(248,113,113,0.10);
  --note:          #60A5FA;
  --note-bg:       rgba(96,165,250,0.10);
  --repair:        #A78BFA;
  --repair-bg:     rgba(167,139,250,0.10);
  --code-bg:       #0D1117;
  --code-text:     #E6EDF3;
}

/* ================================================================
   RESET & BASE
   ================================================================ */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--text-1);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  transition: background var(--t-slow), color var(--t-slow);
}
button,textarea,input,select { font: inherit; }
button { cursor: pointer; }
img,svg { display: block; }
a { color: inherit; text-decoration: none; }

/* ================================================================
   SCROLLBAR
   ================================================================ */
::-webkit-scrollbar        { width: 5px; height: 5px; }
::-webkit-scrollbar-track  { background: transparent; }
::-webkit-scrollbar-thumb  { background: var(--border-mid); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }

/* ================================================================
   UTILITIES
   ================================================================ */
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* ================================================================
   NAV
   ================================================================ */
.main-nav {
  position: sticky;
  top: 0;
  z-index: 200;
  height: var(--nav-h);
  background: rgba(255,255,255,0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: background var(--t-slow);
}
[data-theme="dark"] .main-nav {
  background: rgba(14,14,12,0.85);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 100%;
  padding: 0 clamp(16px,3vw,40px);
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-1);
  flex-shrink: 0;
  text-decoration: none;
}
.nav-logo-img {
  width: 26px;
  height: 26px;
  border-radius: 6px;
  /* Add a subtle shadow to make it pop */
  box-shadow: 0 2px 8px rgba(255, 81, 47, 0.4);
}
.logo-num { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}
.nav-link {
  padding: 6px 12px;
  border-radius: var(--r-pill);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-2);
  transition: color var(--t-fast), background var(--t-fast);
  text-decoration: none;
  white-space: nowrap;
}
.nav-link:hover, .nav-item:hover > .nav-link {
  color: var(--text-1);
  background: var(--bg-alt);
}

/* ── Dropdown nav items ────────────────────────────────── */
.nav-item {
  position: relative;
}
.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  background: var(--surface);
  border: 1px solid var(--border-mid);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  min-width: 240px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 300;
}
.nav-item:hover .nav-dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
/* Wide dropdown for product */
.nav-dropdown.wide { min-width: 520px; display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }

.nav-dropdown-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--r-md);
  cursor: pointer;
  transition: background var(--t-fast);
  text-decoration: none;
  color: inherit;
}
.nav-dropdown-item:hover { background: var(--bg-alt); }
.nav-dd-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--r-sm);
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}
.nav-dd-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-1);
  line-height: 1.3;
}
.nav-dd-sub {
  font-size: 0.78rem;
  color: var(--text-3);
  margin-top: 2px;
  line-height: 1.4;
}

/* ── Shared inner-page styles ────────────────────────────── */
.page-hero {
  padding: clamp(80px, 10vw, 140px) clamp(16px, 4vw, 48px) clamp(60px, 8vw, 100px);
  text-align: center;
  background: var(--bg);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% -10%, var(--accent-bg) 0%, transparent 70%);
  pointer-events: none;
}
.page-hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--r-pill);
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}
.page-hero-title {
  font-size: clamp(2.6rem, 5.5vw, 4rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.05;
  color: var(--text-1);
  max-width: 820px;
  margin: 0 auto 24px;
}
.page-hero-title em {
  font-style: normal;
  color: var(--accent);
}
.page-hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-2);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.65;
}
.page-hero-actions { display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap; }

/* Reusable section styles */
.inner-section {
  padding: clamp(60px, 8vw, 100px) clamp(16px, 4vw, 48px);
}
.inner-section-alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-1);
  text-align: center;
  margin-bottom: 16px;
}
.section-sub {
  font-size: 1rem;
  color: var(--text-2);
  text-align: center;
  max-width: 560px;
  margin: 0 auto 56px;
  line-height: 1.65;
}

/* Feature cards grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 1100px;
  margin: 0 auto;
}
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: 28px;
  transition: box-shadow var(--t-base), transform var(--t-base), border-color var(--t-base);
}
.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: var(--border-mid);
}
.fc-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--r-md);
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 16px;
}
.fc-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 8px;
}
.fc-desc {
  font-size: 0.88rem;
  color: var(--text-3);
  line-height: 1.6;
}

/* Use case cards */
.uc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 1100px;
  margin: 0 auto;
}
.uc-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: 32px;
  transition: box-shadow var(--t-base), transform var(--t-base);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.uc-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.uc-emoji { font-size: 2rem; }
.uc-title { font-size: 1.15rem; font-weight: 700; color: var(--text-1); }
.uc-desc { font-size: 0.9rem; color: var(--text-3); line-height: 1.6; flex: 1; }
.uc-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.uc-tag {
  padding: 3px 10px;
  border-radius: var(--r-pill);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-3);
}

/* Testimonials */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 1100px;
  margin: 0 auto;
}
.testimonial-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: 28px;
}
.tc-quote {
  font-size: 0.95rem;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
}
.tc-quote::before { content: '"'; font-style: normal; color: var(--accent); font-size: 1.5rem; line-height: 1; }
.tc-author { display: flex; align-items: center; gap: 10px; }
.tc-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}
.tc-name { font-size: 0.88rem; font-weight: 700; color: var(--text-1); }
.tc-role { font-size: 0.78rem; color: var(--text-3); }

/* Resource cards */
.resource-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 900px;
  margin: 0 auto 60px;
}
.resource-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: 32px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  transition: box-shadow var(--t-base), transform var(--t-base);
  text-decoration: none;
  color: inherit;
}
.resource-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.rc-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--r-md);
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}
.rc-title { font-size: 1.05rem; font-weight: 700; color: var(--text-1); margin-bottom: 6px; }
.rc-desc { font-size: 0.88rem; color: var(--text-3); line-height: 1.6; }
.rc-arrow { margin-top: 12px; font-size: 0.88rem; color: var(--accent); font-weight: 600; }

/* Article cards */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 1100px;
  margin: 0 auto;
}
.article-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  overflow: hidden;
  transition: box-shadow var(--t-base), transform var(--t-base);
}
.article-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.article-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--r-pill);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--accent-bg);
  color: var(--accent);
  border: 1px solid var(--accent-border);
  margin-bottom: 10px;
}
.article-body { padding: 24px; }
.article-title { font-size: 1rem; font-weight: 700; color: var(--text-1); margin-bottom: 8px; line-height: 1.4; }
.article-excerpt { font-size: 0.85rem; color: var(--text-3); line-height: 1.6; margin-bottom: 16px; }
.article-meta { font-size: 0.78rem; color: var(--text-4); }

/* Pipeline visualization */
.pipeline-viz {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  max-width: 900px;
  margin: 0 auto;
  overflow-x: auto;
  padding: 8px 0 20px;
}
.pv-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 120px;
}
.pv-node {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--border-mid);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  box-shadow: var(--shadow-sm);
  position: relative;
  z-index: 1;
  transition: border-color var(--t-base), box-shadow var(--t-base);
}
.pv-node.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-bg);
}
.pv-label { font-size: 0.78rem; font-weight: 600; color: var(--text-2); text-align: center; }
.pv-connector {
  flex: 1;
  height: 2px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--border) 100%);
  margin-top: -36px;
  min-width: 32px;
}

/* Integrations strip */
.integrations-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
  max-width: 900px;
  margin: 0 auto;
}
.integration-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--r-pill);
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-2);
  box-shadow: var(--shadow-xs);
  transition: box-shadow var(--t-fast), border-color var(--t-fast);
}
.integration-badge:hover { box-shadow: var(--shadow-sm); border-color: var(--border-mid); color: var(--text-1); }
.integration-badge span { font-size: 1.1rem; }

/* Community banner */
.community-banner {
  background: linear-gradient(135deg, var(--accent) 0%, #FF4500 100%);
  border-radius: var(--r-2xl);
  padding: 48px;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}
.cb-title { font-size: 1.8rem; font-weight: 800; color: #fff; margin-bottom: 12px; }
.cb-sub { font-size: 1rem; color: rgba(255,255,255,0.85); margin-bottom: 28px; }
.cb-btn {
  padding: 12px 28px;
  background: #fff;
  color: var(--accent);
  border: none;
  border-radius: var(--r-pill);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform var(--t-fast), box-shadow var(--t-fast);
}
.cb-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

/* Page footer enhanced */
.page-footer {
  padding: clamp(40px, 5vw, 64px) clamp(16px, 4vw, 48px);
  background: var(--bg);
  border-top: 1px solid var(--border);
}
.page-footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
}
.footer-brand p { font-size: 0.88rem; color: var(--text-3); margin-top: 10px; max-width: 220px; line-height: 1.6; }
.footer-col h4 { font-size: 0.82rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-3); margin-bottom: 12px; }
.footer-col a { display: block; font-size: 0.88rem; color: var(--text-2); margin-bottom: 8px; transition: color var(--t-fast); }
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  max-width: 1100px;
  margin: 32px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-4);
  flex-wrap: wrap;
  gap: 8px;
}

/* Responsive page grid adjustments */
@media (max-width: 900px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .uc-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: 1fr; }
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .page-footer-inner { grid-template-columns: 1fr 1fr; }
  .nav-dropdown.wide { min-width: 280px; grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .feature-grid { grid-template-columns: 1fr; }
  .uc-grid { grid-template-columns: 1fr; }
  .resource-grid { grid-template-columns: 1fr; }
  .articles-grid { grid-template-columns: 1fr; }
  .pipeline-viz { gap: 4px; }
  .pv-step { min-width: 80px; }
  .community-banner { padding: 32px 20px; }
  .page-footer-inner { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.nav-status {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-3);
  background: var(--surface-2);
  transition: all var(--t-base);
}
.status-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--pass);
  flex-shrink: 0;
  animation: dotPulse 2.4s ease-in-out infinite;
}
@keyframes dotPulse {
  0%,100% { opacity:1; }
  50%      { opacity:0.4; }
}

.theme-btn {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--surface-2);
  font-size: 0.95rem;
  transition: all var(--t-fast);
  color: var(--text-2);
}
.theme-btn:hover {
  border-color: var(--border-mid);
  background: var(--bg-alt);
}

.nav-cta {
  padding: 8px 18px;
  border: none;
  border-radius: var(--r-pill);
  background: var(--accent);
  color: #fff;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  transition: background var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast);
}
.nav-cta:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(255,99,0,0.32);
}
.nav-cta:active { transform: translateY(0); }

/* ================================================================
   HERO SECTION
   ================================================================ */
.hero {
  min-height: auto;
  background: linear-gradient(
    180deg,
    var(--hero-sky-1) 0%,
    var(--hero-sky-2) 20%,
    var(--hero-sky-3) 45%,
    var(--hero-sky-4) 72%,
    var(--hero-sky-5) 100%
  );
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(32px,4vh,56px) clamp(16px,4vw,48px) clamp(32px,5vh,64px);
  position: relative;
  overflow: hidden;
  transition: background var(--t-slow);
}

.hero-inner {
  width: 100%;
  max-width: 740px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 14px 5px 10px;
  border: 1px solid var(--border-mid);
  border-radius: var(--r-pill);
  background: rgba(255,255,255,0.7);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-2);
  margin-bottom: 16px;
  backdrop-filter: blur(8px);
}
[data-theme="dark"] .hero-eyebrow { background: rgba(255,255,255,0.06); }
.eyebrow-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
  animation: dotPulse 2s ease-in-out infinite;
}

.hero-headline {
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.06;
  color: var(--text-1);
  margin-bottom: 14px;
}
.hero-headline br { display: block; }

.hero-subline {
  font-size: clamp(0.95rem, 1.8vw, 1.08rem);
  color: var(--text-2);
  line-height: 1.68;
  max-width: 560px;
  margin-bottom: 28px;
}

/* ================================================================
   PROMPT BOX  (Base44-style)
   ================================================================ */
.prompt-wrap {
  width: 100%;
  max-width: 680px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.prompt-box {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border-mid);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transition: box-shadow var(--t-base), border-color var(--t-base), background var(--t-slow);
}
.prompt-box:focus-within {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-xl);
}

.prompt-textarea {
  width: 100%;
  min-height: 110px;
  max-height: 260px;
  resize: none;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text-1);
  font-size: 0.96rem;
  line-height: 1.68;
  padding: 20px 22px 12px;
  caret-color: var(--accent);
  overflow-y: auto;
}
.prompt-textarea::placeholder { color: var(--text-3); }

.prompt-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px 12px;
  border-top: 1px solid var(--border);
  gap: 10px;
}

.prompt-bar-left,
.prompt-bar-right {
  display: flex;
  align-items: center;
  gap: 6px;
}

.pbar-btn {
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--surface-2);
  color: var(--text-3);
  font-size: 0.78rem;
  transition: all var(--t-fast);
  flex-shrink: 0;
}
.pbar-btn:hover {
  border-color: var(--border-mid);
  color: var(--text-2);
  background: var(--bg-alt);
}
.pbar-btn svg { width: 14px; height: 14px; }

/* Plan toggle */
.plan-mode-wrap {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 4px 10px 4px 8px;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: var(--surface-2);
  cursor: pointer;
  transition: all var(--t-fast);
}
.plan-mode-wrap:hover { border-color: var(--border-mid); }

.plan-toggle {
  position: relative;
  width: 30px; height: 17px;
  background: var(--bg-alt);
  border: 1px solid var(--border-mid);
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: background var(--t-base);
  flex-shrink: 0;
}
.plan-toggle.on  { background: var(--accent); border-color: var(--accent); }
.plan-knob {
  position: absolute;
  top: 2px; left: 2px;
  width: 11px; height: 11px;
  border-radius: 50%;
  background: var(--text-3);
  transition: left var(--t-base), background var(--t-base);
  box-shadow: 0 1px 3px rgba(0,0,0,0.18);
}
.plan-toggle.on .plan-knob { left: calc(100% - 13px); background: #fff; }

.plan-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-2);
}

.info-circle {
  width: 18px; height: 18px;
  display: flex; align-items: center; justify-content: center;
  border: none;
  background: transparent;
  color: var(--text-4);
  font-size: 0.72rem;
  cursor: pointer;
  transition: color var(--t-fast);
}
.info-circle:hover { color: var(--text-2); }

.char-count-label {
  font-size: 0.72rem;
  color: var(--text-4);
  font-family: var(--font-mono);
  white-space: nowrap;
}

.send-btn {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border: none;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 1rem;
  transition: background var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast);
  flex-shrink: 0;
}
.send-btn:hover {
  background: var(--accent-hover);
  transform: scale(1.06);
  box-shadow: 0 4px 14px rgba(255,99,0,0.35);
}
.send-btn:active { transform: scale(0.97); }
.send-btn.loading {
  background: var(--bg-alt);
  color: var(--accent);
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.send-btn svg { width: 15px; height: 15px; }

/* Sample chips */
.sample-label {
  margin-top: 20px;
  margin-bottom: 12px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  color: var(--text-4);
  text-transform: uppercase;
}

.sample-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.sample-chip {
  padding: 7px 16px;
  border: 1px solid var(--border-mid);
  border-radius: var(--r-pill);
  background: rgba(255,255,255,0.7);
  color: var(--text-2);
  font-size: 0.84rem;
  font-weight: 500;
  transition: all var(--t-fast);
  backdrop-filter: blur(8px);
}
[data-theme="dark"] .sample-chip { background: rgba(255,255,255,0.05); }
.sample-chip:hover {
  border-color: var(--accent-border);
  color: var(--accent);
  background: var(--accent-bg);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* ================================================================
   SCROLLYTELLING SECTION (How it Works)
   ================================================================ */
.scrolly-section {
  position: relative;
  background: var(--bg);
}

.scrolly-bg-wrap {
  position: sticky;
  top: 0;
  height: 100vh;
  width: 100%;
  z-index: 1;
  overflow: hidden;
}

.scrolly-bg {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.8s ease;
}
.scrolly-bg.active {
  opacity: 1;
}

/* Base44 style gradient backgrounds */
.scrolly-bg.bg-1 { background: linear-gradient(135deg, #FFF3E0 0%, #FFFFFF 100%); }
.scrolly-bg.bg-2 { background: radial-gradient(circle at top left, #FF9A44 0%, #FF8033 50%, #FFD194 100%); }
.scrolly-bg.bg-3 { background: linear-gradient(135deg, #F0FDF4 0%, #FFFFFF 100%); }
.scrolly-bg.bg-4 { background: linear-gradient(135deg, #F0F9FF 0%, #FFFFFF 100%); }

[data-theme="dark"] .scrolly-bg.bg-1 { background: linear-gradient(135deg, #2A1705 0%, var(--bg) 100%); }
[data-theme="dark"] .scrolly-bg.bg-2 { background: radial-gradient(circle at top left, #8B3B00 0%, #4A1A00 50%, var(--bg) 100%); }
[data-theme="dark"] .scrolly-bg.bg-3 { background: linear-gradient(135deg, #0A2F1D 0%, var(--bg) 100%); }
[data-theme="dark"] .scrolly-bg.bg-4 { background: linear-gradient(135deg, #08223B 0%, var(--bg) 100%); }

.scrolly-card-wrap {
  position: relative;
  z-index: 2;
  margin-top: -100vh; /* Pulled up over the sticky background */
  padding-bottom: 5vh;
}

.scrolly-card {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 clamp(16px, 4vw, 48px);
}

/* No visible spacer — cards advance on normal scroll without pausing */
.scrolly-spacer {
  height: 0;
  display: none;
}

.scrolly-card-inner {
  display: flex;
  width: 100%;
  max-width: 1100px;
  height: 75vh;
  min-height: 500px;
  max-height: 700px;
  background: var(--surface);
  border-radius: var(--r-2xl);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border-mid);
  overflow: hidden;
  transform: translateY(100px) scale(0.95);
  opacity: 0.3; /* Increased from 0 so the user sees it coming up */
  transition: transform 1s cubic-bezier(0.16, 1, 0.3, 1), opacity 1s ease;
}
.scrolly-card.is-visible .scrolly-card-inner {
  transform: translateY(0) scale(1);
  opacity: 1;
}

.scrolly-text {
  flex: 1;
  padding: clamp(40px, 6vw, 80px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.step-num {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--accent);
  margin-bottom: 20px;
}

.step-heading {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--text-1);
  margin-bottom: 16px;
}

.step-desc {
  font-size: 1.05rem;
  color: var(--text-2);
  line-height: 1.6;
  margin-bottom: 32px;
  max-width: 440px;
}

.step-cta {
  align-self: flex-start;
  padding: 10px 22px;
  border: none;
  border-radius: var(--r-pill);
  background: var(--text-1);
  color: var(--bg);
  font-size: 0.9rem;
  font-weight: 700;
  transition: transform var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
}
.step-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  background: var(--text-2);
}

.scrolly-visual {
  flex: 1;
  background: var(--surface-2);
  border-left: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

/* ================================================================
   MOCKUP STYLES (Pure CSS)
   ================================================================ */
.mockup-window {
  width: 90%;
  height: 85%;
  background: var(--bg);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* 1. Kanban Mockup */
.mockup-kanban .mockup-header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface);
}
.mockup-dot { width: 16px; height: 16px; border-radius: 4px; }
.mockup-title { font-weight: 700; font-size: 0.85rem; color: var(--text-1); flex: 1; }
.mockup-avatar { width: 24px; height: 24px; border-radius: 50%; background: var(--border-strong); }

.kanban-body { padding: 16px; display: flex; flex-direction: column; height: 100%; }
.kanban-title-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.kanban-title-row h3 { font-size: 1.2rem; font-weight: 700; color: var(--text-1); }
.kanban-search { font-size: 0.75rem; color: var(--text-3); padding: 4px 10px; border: 1px solid var(--border); border-radius: var(--r-pill); }
.kanban-board { display: flex; gap: 12px; height: 100%; overflow: hidden; }
.kanban-col { flex: 1; display: flex; flex-direction: column; gap: 10px; }
.kanban-col-header { padding: 4px 8px; border-radius: 4px; font-size: 0.75rem; font-weight: 700; color: #111; display: flex; justify-content: space-between; }
.kanban-col-header span { color: rgba(0,0,0,0.5); }
.kanban-card { padding: 12px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-md); font-size: 0.75rem; font-weight: 600; color: var(--text-1); box-shadow: var(--shadow-xs); display: flex; flex-direction: column; gap: 8px; }
.kb-tag { align-self: flex-start; padding: 2px 6px; border-radius: var(--r-pill); font-size: 0.6rem; font-weight: 700; text-transform: uppercase; }
.kb-tag.green { background: #DCFCE7; color: #166534; }
.kb-tag.purple { background: #F3E8FF; color: #6B21A8; }
.kb-tag.red { background: #FEE2E2; color: #991B1B; }
.kb-tag.orange { background: #FFEDD5; color: #9A3412; }
[data-theme="dark"] .kb-tag.green { background: rgba(22,163,74,0.2); color: #4ADE80; }
[data-theme="dark"] .kb-tag.purple { background: rgba(168,85,247,0.2); color: #C084FC; }
[data-theme="dark"] .kb-tag.red { background: rgba(239,68,68,0.2); color: #F87171; }
[data-theme="dark"] .kb-tag.orange { background: rgba(249,115,22,0.2); color: #FDBA74; }

/* 2. Backend Mockup */
.mockup-backend { background: transparent; box-shadow: none; border: none; align-items: center; justify-content: center; }
.backend-card { width: 100%; max-width: 320px; background: var(--surface); border-radius: var(--r-xl); box-shadow: var(--shadow-lg); border: 1px solid var(--border-mid); overflow: hidden; }
.bc-header { padding: 16px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 12px; background: var(--surface-2); }
.bc-icon { width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; background: #FEF08A; border-radius: 8px; font-size: 1.2rem; }
.bc-title { font-weight: 700; font-size: 0.9rem; color: var(--text-1); }
.bc-sub { font-size: 0.7rem; color: var(--text-3); }
.bc-chat { padding: 16px; }
.bc-chat-msg { display: flex; gap: 10px; font-size: 0.8rem; color: var(--text-2); margin-bottom: 16px; line-height: 1.5; }
.chat-avatar { width: 20px; height: 20px; border-radius: 50%; display: flex; align-items: center; justify-content: center; background: var(--accent-bg); font-size: 0.6rem; flex-shrink: 0; margin-top: 2px; }
.bc-log-list { display: flex; flex-direction: column; gap: 8px; border-left: 2px solid var(--border); padding-left: 12px; margin-left: 10px; }
.bc-log { font-size: 0.75rem; color: var(--text-2); display: flex; align-items: center; gap: 6px; }
.bc-log strong { color: var(--text-1); }

/* 3. Deploy Mockup */
.mockup-deploy { flex-direction: row; }
.deploy-sidebar { width: 120px; border-right: 1px solid var(--border); background: var(--surface-2); padding: 16px 8px; display: flex; flex-direction: column; gap: 4px; }
.d-nav { padding: 6px 8px; font-size: 0.7rem; font-weight: 600; color: var(--text-3); border-radius: 6px; }
.d-nav.active { background: var(--border); color: var(--text-1); }
.deploy-main { flex: 1; padding: 24px; display: flex; flex-direction: column; }
.deploy-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.deploy-top h3 { font-size: 1.1rem; color: var(--text-1); }
.deploy-status { padding: 2px 8px; background: var(--pass-bg); color: var(--pass); font-size: 0.65rem; font-weight: 700; border-radius: var(--r-pill); text-transform: uppercase; }
.deploy-url { font-size: 0.75rem; color: var(--accent); text-decoration: underline; margin-bottom: 24px; }
.deploy-metrics { display: flex; gap: 16px; margin-bottom: 24px; }
.d-metric { flex: 1; padding: 12px; border: 1px solid var(--border); border-radius: var(--r-md); display: flex; flex-direction: column; gap: 4px; }
.d-metric span { font-size: 0.7rem; color: var(--text-3); text-transform: uppercase; font-weight: 700; }
.d-metric strong { font-size: 1.4rem; color: var(--text-1); }
.deploy-chart { flex: 1; display: flex; align-items: flex-end; gap: 8px; padding-top: 16px; border-bottom: 1px solid var(--border); }
.d-bar { flex: 1; background: var(--accent); border-radius: 4px 4px 0 0; opacity: 0.8; }

/* 4. Models Mockup */
.mockup-models { align-items: center; justify-content: center; background: transparent; box-shadow: none; border: none; }
.model-list { width: 100%; max-width: 320px; display: flex; flex-direction: column; gap: 10px; }
.model-header { width: 100%; max-width: 320px; font-size: 0.8rem; font-weight: 700; color: var(--text-3); text-transform: uppercase; margin-bottom: 8px; }
.model-option { display: flex; align-items: center; gap: 12px; padding: 16px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-md); box-shadow: var(--shadow-xs); transition: border-color var(--t-fast); cursor: pointer; }
.model-option.active { border-color: var(--accent); box-shadow: 0 4px 12px var(--accent-bg); }
.mo-icon { width: 36px; height: 36px; border-radius: 8px; background: var(--surface-2); display: flex; align-items: center; justify-content: center; font-size: 1.2rem; }
.mo-info { flex: 1; }
.mo-name { font-size: 0.85rem; font-weight: 700; color: var(--text-1); }
.mo-desc { font-size: 0.7rem; color: var(--text-3); margin-top: 2px; }
.mo-check { color: var(--accent); font-weight: 800; }

@media (max-width: 900px) {
  .scrolly-card-inner { flex-direction: column; height: auto; min-height: 0; }
  .scrolly-text { padding: 40px; }
  .scrolly-visual { min-height: 300px; }
}
@media (max-width: 600px) {
  .scrolly-text { padding: 24px; }
  .step-heading { font-size: 1.8rem; }
}

/* ================================================================
   AI COMPILATION SECTION
   ================================================================ */
.ai-section {
  padding: clamp(60px,8vw,100px) clamp(16px,4vw,48px);
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.ai-section-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: clamp(40px,5vw,80px);
  align-items: start;
}

/* Left copy */
.ai-copy { padding-top: 16px; }

.section-counter {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 16px;
  text-transform: uppercase;
}

.ai-section-headline {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--text-1);
  margin-bottom: 20px;
}

.ai-section-body {
  font-size: 1.04rem;
  color: var(--text-2);
  line-height: 1.78;
  max-width: 440px;
  margin-bottom: 28px;
}

.ai-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.ai-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: var(--r-pill);
  font-size: 0.75rem;
  font-weight: 700;
  border: 1px solid transparent;
}
.ai-badge.pass   { background: var(--pass-bg);   color: var(--pass);   border-color: var(--pass-border); }
.ai-badge.run    { background: var(--note-bg);   color: var(--note);   border-color: rgba(37,99,235,0.22); }
.ai-badge.warn   { background: var(--warn-bg);   color: var(--warn); }
.ai-badge.repair { background: var(--repair-bg); color: var(--repair); }

/* AI Log Card */
.ai-log-card {
  background: var(--surface);
  border: 1px solid var(--border-mid);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transition: background var(--t-slow), border-color var(--t-slow);
}

.ai-card-top {
  padding: 20px 22px 16px;
  border-bottom: 1px solid var(--border);
}

.ai-user-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.ai-user-avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, #6EE7B7, #3B82F6);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.ai-user-name  { font-size: 0.88rem; font-weight: 700; color: var(--text-1); display: block; line-height: 1.2; }
.ai-user-email { font-size: 0.72rem; color: var(--text-3); }

.ai-user-prompt {
  font-size: 0.82rem;
  color: var(--text-2);
  line-height: 1.6;
  padding: 10px 12px;
  background: var(--surface-2);
  border-radius: var(--r-md);
  border: 1px solid var(--border);
  font-style: italic;
  word-break: break-word;
}

.ai-divider {
  height: 1px;
  background: var(--border);
}

.ai-bot-section {
  padding: 18px 22px 20px;
}

.ai-bot-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.ai-bot-avatar {
  width: 30px; height: 30px;
  border-radius: var(--r-sm);
  background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}
.ai-bot-name { font-size: 0.88rem; font-weight: 700; color: var(--text-1); }

.ai-intro-text {
  font-size: 0.88rem;
  color: var(--text-2);
  line-height: 1.65;
  margin-bottom: 16px;
}

/* Log Steps */
.ai-steps-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ai-step {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 5px 0;
  font-size: 0.82rem;
  color: var(--text-3);
  opacity: 0;
  transform: translateY(6px);
  animation: stepIn 0.3s ease forwards;
}

@keyframes stepIn {
  to { opacity: 1; transform: translateY(0); }
}

.ai-step-icon {
  flex-shrink: 0;
  width: 16px; height: 16px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: var(--pass-bg);
  border: 1px solid var(--pass-border);
  color: var(--pass);
  font-size: 0.6rem;
  font-weight: 900;
  margin-top: 1px;
}

.ai-step-verb {
  min-width: 70px;
  font-weight: 700;
  color: var(--text-2);
}

.ai-step-obj { color: var(--text-2); }
.ai-step-detail { color: var(--text-3); }

.ai-success-row {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 14px;
  padding: 10px 14px;
  background: var(--pass-bg);
  border: 1px solid var(--pass-border);
  border-radius: var(--r-md);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--pass);
}
.success-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--pass);
  flex-shrink: 0;
  animation: dotPulse 1.8s ease-in-out infinite;
}

/* ================================================================
   PIPELINE STAGES
   ================================================================ */
.pipeline-section {
  max-width: 1100px;
  margin: 48px auto 0;
  padding: 0 clamp(16px,4vw,48px);
}

.pipeline-section-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 14px;
}

.pipeline-stages {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
}

.stage {
  padding: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-xs);
  position: relative;
  overflow: hidden;
  transition: border-color var(--t-base), background var(--t-slow);
}

.stage-progress {
  position: absolute;
  bottom: 0; left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 0 3px 0 0;
  transition: width 0.5s ease;
}
.stage.done .stage-progress   { width: 100%; }
.stage.active .stage-progress { width: 55%; }
.stage.done { border-color: var(--pass-border); }
.stage.active { border-color: var(--accent-border); }

.stage-num {
  width: 24px; height: 24px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--r-sm);
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-3);
  font-size: 0.7rem;
  font-weight: 800;
  font-family: var(--font-mono);
  margin-bottom: 10px;
  transition: background var(--t-base), color var(--t-base);
}
.stage.done .stage-num   { background: var(--pass-bg);    color: var(--pass); border-color: var(--pass-border); }
.stage.active .stage-num { background: var(--accent-bg);  color: var(--accent); border-color: var(--accent-border); }

.stage-name {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-2);
  margin-bottom: 5px;
  transition: color var(--t-base);
}
.stage.done .stage-name, .stage.active .stage-name { color: var(--text-1); }

.stage-detail {
  font-size: 0.7rem;
  color: var(--text-3);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.stage-ms {
  display: inline-flex;
  margin-top: 8px;
  padding: 2px 7px;
  border-radius: var(--r-pill);
  background: var(--surface-2);
  color: var(--text-3);
  font-size: 0.63rem;
  font-family: var(--font-mono);
}
.stage.done .stage-ms {
  background: var(--pass-bg);
  color: var(--pass);
}

/* ================================================================
   OUTPUT SECTION
   ================================================================ */
.output-section {
  padding: clamp(48px,6vw,80px) clamp(16px,4vw,48px);
  background: var(--bg);
}

.output-inner { max-width: 1100px; margin: 0 auto; }

/* Stats row */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 32px;
}

.stat-card {
  padding: 20px 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-xs);
  transition: border-color var(--t-base), background var(--t-slow);
}
.stat-card.is-pass { border-color: var(--pass-border); }
.stat-card.is-fail { border-color: rgba(220,38,38,0.22); }
.stat-card.is-accent { border-color: var(--accent-border); }

.stat-label {
  font-size: 0.71rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 8px;
}

.stat-value {
  font-size: 1.7rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-1);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  transition: color var(--t-base);
}
.stat-card.is-pass  .stat-value { color: var(--pass); }
.stat-card.is-fail  .stat-value { color: var(--fail); }
.stat-card.is-accent .stat-value { color: var(--accent); }

/* Tabs */
.tabs-row {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
  overflow-x: auto;
  padding-bottom: 1px;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border: none;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  background: transparent;
  color: var(--text-3);
  font-size: 0.84rem;
  font-weight: 600;
  white-space: nowrap;
  transition: color var(--t-fast), border-color var(--t-fast);
  margin-bottom: -1px;
}
.tab-btn:hover { color: var(--text-2); }
.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.tab-panels { background: var(--surface); border: 1px solid var(--border); border-top: none; border-radius: 0 0 var(--r-lg) var(--r-lg); }
.tab-panel  { display: none; }
.tab-panel.active { display: block; }

/* ================================================================
   RUNTIME PREVIEW TAB
   ================================================================ */
.runtime-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  min-height: 560px;
}

.app-preview {
  border-right: 1px solid var(--border);
  overflow: hidden;
  background: var(--bg-alt);
}

.preview-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 400px;
  gap: 12px;
  color: var(--text-3);
  text-align: center;
  padding: 40px;
}
.preview-empty-icon { font-size: 2.5rem; opacity: 0.4; }
.preview-empty-text { font-size: 0.9rem; }

/* preview frame */
.preview-frame {
  display: grid;
  grid-template-columns: 196px 1fr;
  height: 100%;
  min-height: 560px;
}

.pf-nav {
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 14px 10px;
  overflow-y: auto;
}
[data-theme="dark"] .pf-nav { background: var(--surface-2); }

.pf-nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px 14px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 10px;
}
.pf-nav-icon {
  width: 24px; height: 24px;
  border-radius: 6px;
  background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.7rem;
  flex-shrink: 0;
}
.pf-nav-name {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-1);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pf-nav-item {
  display: flex;
  align-items: center;
  gap: 7px;
  width: 100%;
  padding: 7px 10px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  background: transparent;
  color: var(--text-3);
  font-size: 0.76rem;
  font-weight: 500;
  text-align: left;
  margin-bottom: 3px;
  transition: all var(--t-fast);
}
.pf-nav-item:hover  { background: var(--bg-alt); color: var(--text-2); border-color: var(--border); }
.pf-nav-item.active { background: var(--accent-bg); color: var(--accent); border-color: var(--accent-border); font-weight: 600; }

.pf-content {
  padding: 20px 22px;
  overflow-y: auto;
  background: var(--bg-alt);
}

.pf-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.pf-route {
  display: inline-flex;
  padding: 2px 8px;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  font-size: 0.62rem;
  font-family: var(--font-mono);
  color: var(--text-3);
  background: var(--surface);
  margin-bottom: 5px;
}
.pf-title { font-size: 1.2rem; font-weight: 700; color: var(--text-1); }
.pf-roles { display: flex; gap: 5px; flex-wrap: wrap; padding-top: 4px; }
.pf-role-badge {
  display: inline-flex;
  padding: 2px 8px;
  border-radius: var(--r-pill);
  border: 1px solid var(--accent-border);
  background: var(--accent-bg);
  color: var(--accent);
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.comp-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.comp-card {
  padding: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-xs);
}
.comp-card.full-width { grid-column: 1/-1; }
.comp-type-label {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-4);
  margin-bottom: 4px;
}
.comp-card-title {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 10px;
}

/* Mini chart */
.mini-chart {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 64px;
  margin-bottom: 8px;
  padding: 6px;
  background: var(--surface-2);
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
}
.mini-bar {
  flex: 1;
  border-radius: 2px 2px 0 0;
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-2) 100%);
  opacity: 0.75;
  min-width: 10px;
}

/* Mini table */
.mini-table { width: 100%; border-collapse: collapse; font-size: 0.73rem; }
.mini-table th {
  padding: 4px 7px;
  border-bottom: 1px solid var(--border);
  color: var(--text-3);
  font-weight: 600;
  text-align: left;
  font-size: 0.62rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.mini-table td { padding: 5px 7px; border-bottom: 1px solid var(--border); color: var(--text-2); }
.mini-table tr:last-child td { border-bottom: none; }
.cell-badge {
  display: inline-flex;
  padding: 1px 6px;
  border-radius: var(--r-pill);
  font-size: 0.6rem;
  font-weight: 700;
}
.cell-badge.pass { background: var(--pass-bg); color: var(--pass); }
.cell-badge.warn { background: var(--warn-bg); color: var(--warn); }

/* Metric component */
.metric-big { font-size: 1.9rem; font-weight: 800; letter-spacing: -0.03em; color: var(--accent); line-height: 1; margin-bottom: 4px; font-variant-numeric: tabular-nums; }
.metric-sub { font-size: 0.72rem; color: var(--text-3); }
.metric-sub.up   { color: var(--pass); }
.metric-sub.down { color: var(--fail); }

/* Form component */
.mini-field { display: flex; flex-direction: column; gap: 3px; margin-bottom: 7px; }
.mini-field-label { font-size: 0.62rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-3); }
.mini-field-input {
  height: 28px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface-2);
  padding: 0 10px;
  font-size: 0.73rem;
  color: var(--text-3);
}

.endpoint-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 6px;
  padding: 2px 8px;
  border-radius: var(--r-pill);
  background: var(--note-bg);
  border: 1px solid rgba(37,99,235,0.18);
  color: var(--note);
  font-size: 0.6rem;
  font-family: var(--font-mono);
}

/* Runtime checks panel */
.runtime-checks-panel {
  padding: 20px 18px;
  overflow-y: auto;
}
.panel-heading {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 14px;
}

.check-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid var(--border);
}
.check-item:last-child { border-bottom: none; }
.check-name   { font-size: 0.78rem; font-weight: 600; color: var(--text-1); margin-bottom: 2px; }
.check-detail { font-size: 0.68rem; color: var(--text-3); }
.check-pill {
  flex-shrink: 0;
  padding: 2px 8px;
  border-radius: var(--r-pill);
  font-size: 0.62rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.check-pill.pass { background: var(--pass-bg); color: var(--pass); }
.check-pill.fail { background: var(--fail-bg); color: var(--fail); }

/* ================================================================
   JSON VIEW TAB
   ================================================================ */
.json-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.json-filename { font-size: 0.76rem; font-family: var(--font-mono); color: var(--text-3); flex: 1; }
.action-btn {
  padding: 5px 12px;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--surface-2);
  color: var(--text-2);
  font-size: 0.76rem;
  font-weight: 600;
  transition: all var(--t-fast);
}
.action-btn:hover { border-color: var(--border-mid); background: var(--bg-alt); color: var(--text-1); }

#jsonOutput {
  display: block;
  margin: 0;
  padding: 22px;
  background: var(--code-bg);
  color: var(--code-text);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.68;
  overflow: auto;
  max-height: 640px;
  tab-size: 2;
  border-radius: 0 0 var(--r-lg) var(--r-lg);
}
.json-comment { color: #6A737D; font-style: italic; }
.json-key    { color: #79C0FF; }
.json-str    { color: #A5D6A7; }
.json-num    { color: #FFAB70; }
.json-bool   { color: #FF9F43; }
.json-null   { color: #6A737D; }

/* ================================================================
   VALIDATION VIEW TAB
   ================================================================ */
.validation-inner { padding: 24px; }

.val-summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 24px;
}
.val-metric {
  padding: 16px 18px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
}
.val-metric.is-pass { border-color: var(--pass-border); }
.val-metric.is-fail { border-color: rgba(220,38,38,0.22); }
.val-metric-label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 6px;
}
.val-metric-value {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-1);
  font-variant-numeric: tabular-nums;
}
.val-metric.is-pass .val-metric-value { color: var(--pass); }
.val-metric.is-fail .val-metric-value { color: var(--fail); }

.issue-list { display: flex; flex-direction: column; gap: 6px; }
.issue-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  border-left: 3px solid transparent;
  transition: border-color var(--t-fast);
}
.issue-item.pass-item   { border-left-color: var(--pass); }
.issue-item.fail-item   { border-left-color: var(--fail); }
.issue-item.warn-item   { border-left-color: var(--warn); }
.issue-item.note-item   { border-left-color: var(--note); }
.issue-item.repair-item { border-left-color: var(--repair); }

.issue-body { min-width: 0; }
.issue-title { font-size: 0.8rem; font-weight: 700; color: var(--text-1); margin-bottom: 3px; }
.issue-msg   { font-size: 0.74rem; color: var(--text-2); line-height: 1.5; }

.status-pill {
  flex-shrink: 0;
  padding: 3px 10px;
  border-radius: var(--r-pill);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.status-pill.pass   { background: var(--pass-bg);   color: var(--pass); }
.status-pill.fail   { background: var(--fail-bg);   color: var(--fail); }
.status-pill.warn   { background: var(--warn-bg);   color: var(--warn); }
.status-pill.note   { background: var(--note-bg);   color: var(--note); }
.status-pill.repair { background: var(--repair-bg); color: var(--repair); }

/* ================================================================
   EVALUATION VIEW TAB
   ================================================================ */
.eval-inner { padding: 24px; }
.eval-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  gap: 12px;
  flex-wrap: wrap;
}

.run-eval-btn {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 9px 20px;
  border: 1px solid var(--accent-border);
  border-radius: var(--r-pill);
  background: var(--accent-bg);
  color: var(--accent);
  font-size: 0.84rem;
  font-weight: 700;
  transition: all var(--t-base);
}
.run-eval-btn:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: 0 4px 14px rgba(255,99,0,0.28);
  transform: translateY(-1px);
}

.eval-summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}

.eval-table { display: flex; flex-direction: column; gap: 5px; }
.eval-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  transition: border-color var(--t-fast);
}
.eval-row:hover { border-color: var(--border-mid); }
.eval-row-prompt {
  flex: 1;
  font-size: 0.78rem;
  color: var(--text-2);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.eval-row-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.eval-meta-chip {
  font-size: 0.67rem;
  font-family: var(--font-mono);
  color: var(--text-3);
  white-space: nowrap;
}

.success-bar-wrap { margin-top: 4px; }
.success-bar-track {
  height: 4px;
  border-radius: var(--r-pill);
  background: var(--border);
  overflow: hidden;
}
.success-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--pass), #86EFAC);
  border-radius: var(--r-pill);
  transition: width 0.8s ease;
}

/* ================================================================
   EMPTY STATE
   ================================================================ */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 260px;
  gap: 10px;
  padding: 40px;
  text-align: center;
}
.empty-icon { font-size: 2rem; opacity: 0.35; }
.empty-title { font-size: 0.92rem; font-weight: 600; color: var(--text-2); }
.empty-sub   { font-size: 0.8rem; color: var(--text-3); max-width: 300px; line-height: 1.65; }

/* ================================================================
   FOOTER
   ================================================================ */
.site-footer {
  padding: 28px clamp(16px,4vw,48px);
  border-top: 1px solid var(--border);
  background: var(--surface);
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-logo { font-size: 0.88rem; font-weight: 700; color: var(--text-1); }
.footer-copy { font-size: 0.76rem; color: var(--text-3); }

/* ================================================================
   ANIMATIONS
   ================================================================ */
@keyframes fadeInUp {
  from { opacity:0; transform: translateY(18px); }
  to   { opacity:1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity:0; }
  to   { opacity:1; }
}
.anim-in  { animation: fadeInUp 0.4s ease both; }
.anim-in-fast { animation: fadeIn 0.25s ease both; }

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 1040px) {
  .ai-section-inner { grid-template-columns: 1fr; }
  .ai-log-card { max-width: 520px; }
  .pipeline-stages { grid-template-columns: repeat(3,1fr); }
  .stats-row { grid-template-columns: repeat(2,1fr); }
  .val-summary { grid-template-columns: repeat(2,1fr); }
  .eval-summary { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 760px) {
  .nav-links { display: none; }
  .runtime-layout { grid-template-columns: 1fr; }
  .preview-frame  { grid-template-columns: 1fr; }
  .pf-nav { display: flex; gap: 6px; overflow-x: auto; border-right: none; border-bottom: 1px solid var(--border); }
  .pf-nav-brand { border-bottom: none; padding-bottom: 6px; border-right: 1px solid var(--border); flex-shrink: 0; }
  .pf-nav-item  { flex-shrink: 0; margin-bottom: 0; }
  .pipeline-stages { grid-template-columns: repeat(2,1fr); }
  .comp-grid { grid-template-columns: 1fr; }
}
@media (max-width: 540px) {
  .pipeline-stages { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr 1fr; }
  .val-summary { grid-template-columns: 1fr 1fr; }
  .eval-summary { grid-template-columns: 1fr 1fr; }
  .hero-headline { font-size: clamp(2.4rem,12vw,3.5rem); }
  .sample-chips { gap: 6px; }
  .sample-chip { font-size: 0.78rem; padding: 6px 12px; }
}

/* ================================================================
   NEW NAVIGATION & MOBILE MENU
   ================================================================ */
.mobile-menu-btn {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-1);
  cursor: pointer;
  padding: 8px;
}
.nav-arrow { font-size: 0.7rem; margin-left: 2px; opacity: 0.6; }
.nav-signin {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--text-2);
  font-size: 0.84rem;
  font-weight: 600;
  transition: all var(--t-fast);
}
.nav-signin:hover { border-color: var(--border-mid); color: var(--text-1); background: var(--surface-2); }
.nav-icon-btn {
  background: transparent;
  border: none;
  color: var(--text-2);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
  border-radius: 50%;
  transition: all var(--t-fast);
}
.nav-icon-btn:hover { background: var(--surface-2); color: var(--text-1); }

/* ================================================================
   MOCKUP SHOWCASE SECTION
   ================================================================ */
.mockup-showcase-section {
  padding: 40px 0 80px;
  background: var(--bg);
  overflow: hidden;
}
.mockup-showcase-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.ms-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
  width: 100%;
  max-width: 800px;
  padding: 0 24px;
}
.ms-label {
  padding: 8px 24px;
  border-radius: var(--r-pill);
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-2);
}
.ms-label.ms-app {
  background: linear-gradient(135deg, #FFD194 0%, #FF9A44 100%);
  color: #fff;
  border: none;
  box-shadow: var(--shadow-sm);
}
[data-theme="dark"] .ms-label.ms-app {
  background: linear-gradient(135deg, #FF7A1A 0%, #E55800 100%);
}
.ms-line {
  flex: 1;
  height: 2px;
  background: linear-gradient(90deg, var(--border) 0%, rgba(255,122,26,0.5) 100%);
}
.ms-cards-track {
  display: flex;
  gap: 24px;
  width: 100%;
  padding: 0 clamp(16px, 4vw, 48px);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 24px; /* for scrollbar */
}
.ms-card {
  flex: 0 0 clamp(280px, 60vw, 400px);
  scroll-snap-align: center;
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
  background: var(--surface);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
}
.ms-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ================================================================
   FAQ SECTION
   ================================================================ */
.faq-section {
  padding: clamp(60px, 8vw, 100px) clamp(16px, 4vw, 48px);
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}
.faq-inner {
  max-width: 800px;
  margin: 0 auto;
}
.faq-heading {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-1);
  text-align: center;
  margin-bottom: 48px;
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: box-shadow var(--t-fast);
}
.faq-item:hover { box-shadow: var(--shadow-sm); }
.faq-summary {
  padding: 24px;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-1);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-summary::-webkit-details-marker { display: none; }
.faq-summary::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--text-3);
  transition: transform 0.3s ease;
}
.faq-item[open] .faq-summary::after {
  content: '−';
  transform: rotate(180deg);
}
.faq-content {
  padding: 0 24px 24px;
  font-size: 1rem;
  color: var(--text-2);
  line-height: 1.6;
}

/* ================================================================
   BOTTOM CTA SECTION
   ================================================================ */
.bottom-cta-section {
  padding: clamp(80px, 12vw, 140px) clamp(16px, 4vw, 48px);
  background: var(--bg);
  text-align: center;
}
.bottom-cta-inner {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}
.cta-heading {
  font-size: clamp(2.4rem, 5vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-1);
  line-height: 1.1;
}
.cta-sub {
  font-size: 1.1rem;
  color: var(--text-2);
}
.cta-large {
  font-size: 1.1rem;
  padding: 16px 36px;
  margin-top: 16px;
}

/* ================================================================
   SIGN IN MODAL
   ================================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 1;
  transition: opacity var(--t-base);
}
.modal-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}
.modal-content {
  background: var(--surface);
  width: 100%;
  max-width: 420px;
  border-radius: var(--r-xl);
  padding: 40px 32px;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border-mid);
  position: relative;
  transform: translateY(0);
  transition: transform var(--t-base);
}
.modal-overlay.hidden .modal-content {
  transform: translateY(20px);
}
.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: transparent;
  border: none;
  font-size: 1.2rem;
  color: var(--text-3);
  cursor: pointer;
  padding: 8px;
  line-height: 1;
  border-radius: 50%;
  transition: background var(--t-fast);
}
.modal-close:hover { background: var(--surface-2); color: var(--text-1); }
.modal-title {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-1);
  margin-bottom: 8px;
  text-align: center;
}
.modal-sub {
  font-size: 0.95rem;
  color: var(--text-2);
  text-align: center;
  margin-bottom: 32px;
}
.modal-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.auth-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 12px;
  border-radius: var(--r-md);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--t-fast);
}
.github-btn {
  background: #24292e;
  color: #fff;
  border: 1px solid #24292e;
}
.github-btn:hover { background: #1b1f23; }
.google-btn {
  background: var(--surface);
  color: var(--text-1);
  border: 1px solid var(--border-mid);
}
.google-btn:hover { background: var(--surface-2); }
[data-theme="dark"] .github-btn { background: #fff; color: #24292e; border-color: #fff; }
[data-theme="dark"] .github-btn:hover { background: #f3f4f6; }

/* Sign-out button */
.sign-out-btn {
  background: var(--surface-2);
  color: var(--text-2);
  border: 1px solid var(--border-mid);
  width: 100%;
  margin-top: 8px;
}
.sign-out-btn:hover { background: var(--surface); color: var(--text-1); }

/* Auth error */
.auth-error {
  margin-top: 12px;
  font-size: 0.85rem;
  color: #ef4444;
  text-align: center;
  padding: 8px 12px;
  background: rgba(239,68,68,0.08);
  border-radius: var(--r-md);
}

/* Auth loading spinner */
.auth-spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
  margin-right: 4px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Nav user avatar (shown when signed in) */
.nav-user-avatar {
  background: transparent;
  border: 2px solid var(--border-mid);
  border-radius: 50%;
  padding: 2px;
  cursor: pointer;
  transition: border-color var(--t-fast), transform var(--t-fast);
  width: 36px;
  height: 36px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.nav-user-avatar:hover { border-color: var(--accent); transform: scale(1.05); }
.nav-user-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

/* Modal signed-in view */
.modal-user-info {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: var(--surface-2);
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  margin-bottom: 16px;
}
.modal-user-photo {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}
.modal-user-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-1);
}
.modal-user-email {
  font-size: 0.82rem;
  color: var(--text-3);
  margin-top: 2px;
}
.modal-signed-in-sub {
  font-size: 0.9rem;
  color: var(--text-2);
  text-align: center;
  margin-bottom: 20px;
}

/* Responsive adjustments for new sections */
@media (max-width: 760px) {
  .mobile-menu-btn { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: var(--surface);
    flex-direction: column;
    padding: 16px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
  }
  .nav-links.show-mobile { display: flex; }
  .nav-actions { display: none; }
  
  .ms-header { padding: 0 16px; flex-direction: column; gap: 8px; }
  .ms-line { width: 2px; height: 30px; background: linear-gradient(180deg, var(--border) 0%, rgba(255,122,26,0.5) 100%); }
  
  .faq-summary { font-size: 1rem; padding: 20px; }
}

/* ================================================================
   COMPILE ERROR BAR
   ================================================================ */
.compile-error {
  display:     flex;
  align-items: center;
  gap:         8px;
  margin-top:  12px;
  padding:     10px 14px;
  background:  rgba(220, 38, 38, 0.08);
  border:      1px solid rgba(220, 38, 38, 0.22);
  border-radius: var(--r-md, 10px);
  font-size:   0.84rem;
  width:       100%;
  animation:   compileErrIn 0.2s ease;
}
.compile-error-icon {
  flex-shrink: 0;
  font-size:   0.95rem;
  color:       #f87171;
}
.compile-error-msg {
  flex:        1;
  color:       #fca5a5;
  font-weight: 500;
  line-height: 1.4;
}
.compile-error-close {
  flex-shrink: 0;
  width:  24px;
  height: 24px;
  border: none;
  background:   transparent;
  color:        #f87171;
  cursor:       pointer;
  display:      flex;
  align-items:  center;
  justify-content: center;
  border-radius: var(--r-sm, 6px);
  font-size:    0.8rem;
  opacity:      0.7;
  transition:   opacity 0.15s, background 0.15s;
  padding:      0;
}
.compile-error-close:hover {
  opacity:    1;
  background: rgba(220, 38, 38, 0.15);
}
@keyframes compileErrIn {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}