/* ───────────────────────────────────────────────
   Clawdia Landing Page
   Terminal monospace theme — matched to app README
   ─────────────────────────────────────────────── */

:root {
  --bg-primary: #0f0f0f;
  --bg-secondary: #161616;
  --bg-tertiary: #1c1c1c;
  --bg-elevated: #242424;
  --bg-code: #1c1c1c;
  --accent: #0e7490;
  --accent-hover: #0891b2;
  --accent-glow: rgba(14, 116, 144, 0.15);
  --text-primary: #e0e0e0;
  --text-secondary: #808080;
  --text-tertiary: #525252;
  --border: #262626;
  --border-subtle: rgba(255, 255, 255, 0.04);
  --border-hover: #333;
  --error: #f87171;
  --success: #4ade80;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ─── Scrollbars ─── */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-tertiary); }
::-webkit-scrollbar-corner { background: transparent; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s;
}

a:hover {
  color: var(--text-primary);
}

strong {
  color: var(--text-primary);
  font-weight: 600;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 32px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ─── Top Bar ─── */

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 32px;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 0.3s, border-color 0.3s, backdrop-filter 0.3s;
  pointer-events: none;
  opacity: 0;
}

.topbar.visible {
  opacity: 1;
  pointer-events: auto;
  background: rgba(15, 15, 15, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--border);
}

.topbar-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
}

.topbar-brand {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.35em;
}

.topbar-links {
  display: flex;
  gap: 28px;
  align-items: center;
}

.topbar-links a {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-tertiary);
  transition: color 0.15s;
}

.topbar-links a:hover {
  color: var(--text-primary);
}

.topbar-download {
  background: var(--bg-elevated);
  color: var(--text-secondary) !important;
  padding: 5px 14px;
  border-radius: 4px;
  border: 1px solid var(--border);
  font-size: 14px !important;
  transition: color 0.15s, border-color 0.15s !important;
}

.topbar-download:hover {
  color: var(--text-primary) !important;
  border-color: var(--text-tertiary) !important;
}

/* ═══════════════════════════════════════════════
   HERO — 40/60 split: text left, demo right
   ═══════════════════════════════════════════════ */

.hero {
  position: relative;
  overflow: hidden;
}

.hero-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  padding: 48px 32px 32px;
  align-items: center;
}

/* ── Text column ── */

.hero-text {
  max-width: 480px;
}

.hero-kicker {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin: 0 0 24px 0;
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
  color: var(--text-primary);
  margin: 0 0 6px 0;
}

/* ── Stacked tagline with strikethrough ── */

.hero-title-stack {
  display: flex;
  flex-direction: column;
  margin: 0 0 6px 0;
}

.hero-title-line {
  display: block;
  position: relative;
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.15;
}

.hero-title-struck {
  color: var(--text-tertiary);
}

.hero-title-struck::after {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 100%;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  animation: strike-through 0.6s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.hero-title-line:nth-child(1)::after { animation-delay: 0.4s; }
.hero-title-line:nth-child(2)::after { animation-delay: 0.7s; }
.hero-title-line:nth-child(3)::after { animation-delay: 1.0s; }

.hero-title-solved {
  color: var(--text-primary);
  opacity: 0;
  transform: translateY(8px);
  animation: solved-appear 0.5s cubic-bezier(0.22, 1, 0.36, 1) 1.4s forwards;
}

@keyframes strike-through {
  to { transform: scaleX(1); }
}

@keyframes solved-appear {
  to { opacity: 1; transform: translateY(0); }
}

.hero-sub {
  font-size: 20px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 0;
}

.text-bright {
  color: var(--text-primary);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s, transform 0.1s;
  border: 1px solid var(--border);
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--text-primary);
  color: var(--bg-primary);
  border-color: var(--text-primary);
}

.btn-primary:hover {
  background: #fff;
  color: #000;
  border-color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border-hover);
}

.btn-secondary:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
}

.hero-note {
  font-size: 12px;
  color: var(--text-tertiary);
}

.hero-note a {
  color: var(--text-secondary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.hero-note a:hover {
  color: var(--text-primary);
}

/* ── Proof strip — stacked in text column ── */

.hero-proof {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.hero-proof-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  color: var(--text-secondary);
}

.hero-proof-check {
  color: var(--success);
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
  flex-shrink: 0;
}

.hero-pillar {
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
}

.hero-pillar strong {
  color: var(--text-primary);
  font-size: 22px;
}

.hero-pillar span {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.4;
}

.proof-highlight {
  color: var(--success);
  font-weight: 600;
}

/* ── Demo video column ── */

.hero-media-col {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-media-col .hero-demo {
  width: 100%;
  flex: 1;
  min-height: 0;
}

.hero-media-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  flex-shrink: 0;
}

.hero-media-actions .hero-actions {
  justify-content: center;
  margin-bottom: 0;
}

.hero-media-actions .hero-note {
  text-align: center;
}

.hero-demo {
  position: relative;
  width: 100%;
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  cursor: zoom-in;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.04),
    0 24px 48px -12px rgba(0, 0, 0, 0.5);
  transition: box-shadow 0.3s, border-color 0.3s;
}

.hero-demo:hover {
  border-color: var(--border-hover);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.06),
    0 32px 64px -12px rgba(0, 0, 0, 0.6);
}

.hero-demo video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.hero-media-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.fallback-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--text-tertiary);
  opacity: 0.6;
}

.fallback-text {
  font-size: 13px;
  color: var(--text-tertiary);
  opacity: 0.6;
}

/* ── Desktop: 40/60 split ── */

@media (min-width: 900px) {
  .hero-split {
    grid-template-columns: 38% 1fr;
    gap: 32px;
    padding: 0 40px;
    height: 100vh;
    height: 100dvh;
    align-items: center;
  }

  .hero-text {
    max-width: none;
  }

  .hero-media-col {
    min-height: 0;
  }

  .hero-demo {
    height: 100%;
    border-radius: 12px;
  }

  .hero-demo video {
    object-fit: contain;
  }
}

/* ── Modal overlay for zoomed video ── */

.media-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.media-modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.media-modal-content {
  position: relative;
  max-width: 96vw;
  max-height: 96vh;
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.6);
  border-radius: 8px;
  overflow: hidden;
  transform: scale(0.95);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: zoom-out;
}

.media-modal-overlay.active .media-modal-content {
  transform: scale(1);
}

.media-modal-content video {
  max-width: 100%;
  max-height: 96vh;
  width: auto;
  height: auto;
  display: block;
  object-fit: contain;
  pointer-events: none;
}

.media-modal-close {
  display: none;
}

/* ═══════════════════════════════════════════════
   SECTIONS
   ═══════════════════════════════════════════════ */

.section {
  padding: 80px 0;
}

.section-title {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-align: center;
  margin-bottom: 48px;
  color: var(--text-primary);
}

/* ─── How It Works ─── */

.section-how {
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
}

/* ─── Features ─── */

.section-features {
  border-top: 1px solid var(--border);
}

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 64px;
}

.feature-row-reverse .feature-text { order: 2; }
.feature-row-reverse .feature-visual { order: 1; }

.feature-label {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.feature-text p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.8;
}

.feature-code {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.code-header {
  display: flex;
  gap: 6px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}

.code-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--bg-elevated);
}

.feature-code pre {
  padding: 16px 18px;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-primary);
  overflow-x: auto;
}

.c-kw { color: var(--text-primary); }
.c-str { color: var(--accent); }
.c-cm { color: var(--text-tertiary); }
.c-you { color: var(--text-secondary); }
.c-ai { color: var(--text-primary); }
.c-ok { color: var(--success); }

.feature-punchline {
  font-size: 12px;
  color: var(--text-tertiary);
  text-align: center;
  padding: 10px 18px 14px;
  border-top: 1px solid var(--border);
  margin: 0;
}

.feature-aside {
  font-size: 14px;
  color: var(--text-tertiary);
  line-height: 1.7;
  margin-top: 12px;
}

/* BYOK visual */
.feature-code-byok {
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.byok-flow {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 14px;
}

.byok-node {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: 8px 18px;
  border-radius: 4px;
  color: var(--text-secondary);
}

.byok-node-accent {
  border-color: var(--text-tertiary);
  color: var(--text-primary);
}

.byok-arrow {
  color: var(--text-tertiary);
  font-size: 16px;
}

.byok-note {
  font-size: 12px;
  color: var(--text-tertiary);
}

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 24px;
}

.feature-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 22px;
  transition: border-color 0.2s;
}

.feature-card:hover {
  border-color: var(--border-hover);
}

.feature-card h4 {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ─── Trust / Safety ─── */

.section-trust {
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.trust-item {
  text-align: center;
  padding: 0 8px;
}

.trust-icon {
  font-size: 22px;
  margin-bottom: 14px;
  color: var(--text-tertiary);
}

.trust-item h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.trust-item p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ─── FAQ ─── */

.section-faq {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
}

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  max-width: 880px;
  margin: 0 auto;
}

.faq-item {
  align-self: start;
}

.faq-question {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.faq-answer {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ─── Getting Started ─── */

.section-start {
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
}

.steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  margin-bottom: 48px;
}

.step {
  flex: 0 1 240px;
  text-align: center;
  padding: 0 16px;
}

.step-number {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
}

.step h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.step p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.step p a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.step-connector {
  flex: 0 0 40px;
  height: 1px;
  background: var(--border);
  margin-top: 18px;
}

.build-source {
  text-align: center;
  margin-bottom: 48px;
}

.build-source > p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.code-block {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px 18px;
  max-width: 100%;
  overflow-x: auto;
}

.code-block code {
  font-size: 14px;
  color: var(--text-primary);
  white-space: nowrap;
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 10px;
  color: var(--text-secondary);
  font-size: 12px;
  font-family: var(--font-mono);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
  flex-shrink: 0;
}

.copy-btn:hover {
  color: var(--text-primary);
  border-color: var(--text-tertiary);
}

.copy-btn.copied {
  color: var(--success);
  border-color: var(--success);
}

.copy-text {
  min-width: 36px;
  text-align: center;
}

/* Download Grid */

.download-all {
  text-align: center;
}

.download-all h3 {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.download-grid {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.download-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px 36px;
  color: var(--text-secondary);
  transition: border-color 0.2s, color 0.2s;
}

.download-card:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.download-card[data-current="true"] {
  border-color: var(--text-tertiary);
}

.download-os {
  font-weight: 600;
  font-size: 15px;
  color: var(--text-primary);
}

.download-format {
  font-size: 13px;
  color: var(--text-tertiary);
}

.download-all-note {
  font-size: 14px;
  color: var(--text-tertiary);
}

.download-all-note a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ─── Footer ─── */

.footer {
  padding: 40px 0;
  text-align: center;
  border-top: 1px solid var(--border);
}

.footer-brand {
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.35em;
  color: var(--text-tertiary);
  margin-bottom: 12px;
}

.footer-author {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.footer-links {
  font-size: 14px;
  color: var(--text-tertiary);
  margin-bottom: 14px;
}

.footer-links a { color: var(--text-secondary); }
.footer-links a:hover { color: var(--text-primary); }

.footer-sep {
  margin: 0 8px;
}

.footer-powered {
  font-size: 13px;
  color: var(--text-tertiary);
}

/* ─── Scroll Animations ─── */

.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ═══════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════ */

@media (max-width: 768px) {
  .hero-split {
    padding: 56px 20px 28px;
    gap: 24px;
  }

  .hero-text {
    text-align: center;
  }

  .hero-title {
    font-size: 1.8rem;
    text-align: center;
  }

  .hero-title-line {
    font-size: 1.8rem;
  }

  .hero-title-stack {
    align-items: center;
  }

  .hero-kicker {
    text-align: center;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-note {
    text-align: center;
  }

  .hero-proof {
    align-items: center;
  }

  .hero-pillar {
    align-items: center;
  }

  .feature-row,
  .feature-row-reverse {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .feature-row-reverse .feature-text { order: 1; }
  .feature-row-reverse .feature-visual { order: 2; }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .trust-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .faq-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .steps {
    flex-direction: column;
    align-items: center;
    gap: 20px;
  }

  .step-connector {
    width: 1px;
    height: 20px;
    flex: 0 0 20px;
    margin: 0;
  }

  .code-block {
    flex-direction: column;
    gap: 8px;
  }

  .code-block code {
    white-space: pre-wrap;
    word-break: break-all;
    font-size: 11px;
  }

  .download-grid {
    flex-direction: column;
    align-items: center;
  }

  .download-card {
    width: 100%;
    max-width: 260px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.5rem;
  }

  .hero-title-line {
    font-size: 1.5rem;
  }

  .section {
    padding: 56px 0;
  }

  .section-title {
    font-size: 13px;
    margin-bottom: 36px;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}