@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=DM+Sans:opsz,wght@9..40,300;9..40,400;9..40,500;9..40,600;9..40,700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --bg-primary: #0a0a0c;
  --bg-secondary: #121216;
  --bg-tertiary: #1a1a24;
  --text-primary: #f5f5f7;
  --text-secondary: #86868b;
  --text-muted: #6b6b70;
  --accent: #c9956b;
  --accent-dim: rgba(201, 149, 107, 0.12);
  --accent-glow: rgba(201, 149, 107, 0.25);
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.1);
  --glass: rgba(18, 18, 22, 0.8);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  --font-display: 'Outfit', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --max-width: 1100px;
}

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

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

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

::selection { background: var(--accent-dim); color: var(--text-primary); }

::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.08); border-radius: 2px; }

/* ── Navigation ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 2rem; height: 56px; background: transparent; transition: var(--transition);
}
nav.scrolled {
  background: rgba(10,10,12,0.85); backdrop-filter: blur(24px) saturate(1.3);
  -webkit-backdrop-filter: blur(24px) saturate(1.3); border-bottom: 1px solid var(--border);
}
.nav-brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.nav-logo {
  width: 28px; height: 28px; border-radius: 6px; background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-size: 13px; font-weight: 700; color: var(--bg-primary);
}
.nav-brand-text { font-family: var(--font-display); font-size: 15px; font-weight: 600; letter-spacing: 0.02em; color: var(--text-primary); }
.nav-links { display: flex; gap: 2rem; list-style: none; align-items: center; }
.nav-links a { color: var(--text-secondary); text-decoration: none; font-size: 12.5px; font-weight: 500; letter-spacing: 0.02em; transition: color 0.3s ease; }
.nav-links a:hover { color: var(--text-primary); }
.nav-toggle {
  display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 4px;
}
.nav-toggle span { display: block; width: 20px; height: 1.5px; background: var(--text-primary); border-radius: 1px; transition: var(--transition); }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(4px,4px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(4px,-4px); }

/* ── Hero ── */
.hero {
  position: relative; min-height: 100vh; display: flex; flex-direction: column;
  align-items: center; justify-content: center; padding: 2rem; overflow: hidden;
}
.hero-bg-glow {
  position: absolute; width: 500px; height: 500px; border-radius: 50%;
  filter: blur(140px); opacity: 0.08; pointer-events: none;
}
.hero-bg-glow.accent { background: var(--accent); top: -200px; right: -160px; }
.hero-bg-glow.secondary { background: #fff; bottom: -200px; left: -160px; opacity: 0.04; }
.hero-content { text-align: center; max-width: 800px; position: relative; z-index: 2; }

/* ── Live Status Pill ── */
.live-status {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 16px 6px 12px; border-radius: 100px;
  background: rgba(201,149,107,0.06); border: 1px solid rgba(201,149,107,0.12);
  margin-bottom: 1.5rem; font-size: 11px; font-family: var(--font-mono);
  color: var(--text-muted); letter-spacing: 0.06em;
  opacity: 0; animation: fadeSlideUp 0.8s 0.2s forwards;
}
.live-dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
  animation: pulseDot 2s ease-in-out infinite;
}
@keyframes pulseDot { 0%,100% { opacity:1; box-shadow:0 0 0 0 var(--accent-glow); } 50% { opacity:0.6; box-shadow:0 0 8px 2px var(--accent-glow); } }
.live-bars { display: flex; align-items: center; gap: 2px; height: 14px; margin-left: 2px; }
.live-bars span {
  width: 2px; border-radius: 1px; background: var(--accent);
  animation: barMove 0.8s ease-in-out infinite alternate;
}
.live-bars span:nth-child(1) { height: 6px; animation-delay: 0s; }
.live-bars span:nth-child(2) { height: 10px; animation-delay: 0.15s; }
.live-bars span:nth-child(3) { height: 14px; animation-delay: 0.3s; }
.live-bars span:nth-child(4) { height: 8px; animation-delay: 0.45s; }
.live-bars span:nth-child(5) { height: 4px; animation-delay: 0.6s; }
@keyframes barMove { 0% { opacity: 0.3; } 100% { opacity: 0.9; } }

.hero-suptitle { font-family: var(--font-mono); font-size: 11px; color: var(--text-muted); letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 1.5rem; opacity: 0; animation: fadeSlideUp 0.8s 0.2s forwards; }
.hero-title {
  font-family: var(--font-display); font-size: clamp(3rem,9vw,6.5rem); font-weight: 800;
  line-height: 1.02; letter-spacing: -0.03em; margin-bottom: 0.25rem;
  opacity: 0; animation: fadeSlideUp 0.8s 0.35s forwards;
}
.hero-title .period { color: var(--accent); }
.hero-expanded {
  font-family: var(--font-display); font-size: clamp(0.85rem,1.5vw,1.05rem); font-weight: 400;
  color: var(--text-secondary); letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 2.5rem;
  opacity: 0; animation: fadeSlideUp 0.8s 0.5s forwards;
}
.hero-expanded .hl { color: var(--accent); font-weight: 500; }
.hero-desc {
  font-size: clamp(1rem,1.5vw,1.15rem); color: var(--text-secondary);
  line-height: 1.7; max-width: 600px; margin: 0 auto 2.5rem;
  opacity: 0; animation: fadeSlideUp 0.8s 0.6s forwards;
}
.hero-cta { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; opacity: 0; animation: fadeSlideUp 0.8s 0.75s forwards; }

.btn {
  padding: 12px 28px; border-radius: 50px; font-family: var(--font-body); font-size: 13px;
  font-weight: 600; letter-spacing: 0.01em; cursor: pointer;
  transition: all 0.4s cubic-bezier(0.16,1,0.3,1); border: none; text-decoration: none;
  display: inline-flex; align-items: center; gap: 8px;
}
.btn-primary { background: var(--accent); color: var(--bg-primary); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 32px var(--accent-glow); }
.btn-secondary { background: transparent; color: var(--text-primary); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--text-muted); background: rgba(255,255,255,0.03); transform: translateY(-2px); }

.scroll-indicator {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: var(--text-muted); font-size: 10px; font-family: var(--font-mono); letter-spacing: 0.12em;
  opacity: 0; animation: fadeSlideUp 0.8s 1s forwards;
}
.scroll-indicator .line { width: 1px; height: 32px; background: linear-gradient(to bottom,var(--text-muted),transparent); }

@keyframes fadeSlideUp { from { opacity:0; transform:translateY(24px); } to { opacity:1; transform:translateY(0); } }

/* ── Section Base ── */
section { padding: 6rem 2rem; }
.section-inner { max-width: var(--max-width); margin: 0 auto; }
.section-header { margin-bottom: 4rem; }
.section-label { font-family: var(--font-mono); font-size: 10px; color: var(--text-muted); letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 0.75rem; display: block; }
.section-title { font-family: var(--font-display); font-size: clamp(1.8rem,3vw,2.4rem); font-weight: 700; letter-spacing: -0.02em; line-height: 1.15; color: var(--text-primary); }
.section-desc { font-size: 1rem; color: var(--text-secondary); line-height: 1.7; max-width: 540px; margin-top: 0.75rem; }

/* ── Identity ── */
#identity { background: var(--bg-secondary); }
.identity-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; background: var(--border); border-radius: var(--radius); overflow: hidden; }
.identity-card { background: var(--bg-secondary); padding: 2.5rem; }
.identity-card h3 { font-family: var(--font-display); font-size: 0.85rem; font-weight: 600; color: var(--accent); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 1.25rem; display: flex; align-items: center; gap: 8px; }
.identity-card p, .identity-card li { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; }
.identity-card ul { list-style: none; padding: 0; }
.identity-card ul li { padding-left: 1.25rem; position: relative; margin-bottom: 0.4rem; }
.identity-card ul li::before { content: ''; position: absolute; left: 0; top: 0.6em; width: 4px; height: 4px; border-radius: 50%; background: var(--accent); opacity: 0.5; }
.identity-card ul li strong { color: var(--text-primary); font-weight: 500; }
.identity-card ul li em { font-style: italic; color: var(--text-primary); }
.quote-block { margin-top: 1.5rem; padding: 1.25rem 1.5rem; background: var(--bg-tertiary); border-radius: var(--radius-sm); border-left: 2px solid var(--accent); }
.quote-block p { font-style: italic; color: var(--text-primary); font-size: 0.9rem; }
.quote-block cite { display: block; margin-top: 0.5rem; font-size: 0.75rem; color: var(--text-muted); font-style: normal; font-family: var(--font-mono); }

/* ── Capabilities ── */
#capabilities { background: var(--bg-primary); }
.caps-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1px; background: var(--border); border-radius: var(--radius); overflow: hidden; }
.cap-card { background: var(--bg-primary); padding: 2rem; transition: background 0.4s ease; position: relative; }
.cap-card:hover { background: var(--bg-secondary); }
.cap-icon {
  width: 36px; height: 36px; border-radius: 8px; background: var(--accent-dim);
  display: flex; align-items: center; justify-content: center; margin-bottom: 1rem;
  color: var(--accent); font-size: 0.9rem; font-weight: 600; font-family: var(--font-display);
  transition: background 0.4s ease;
}
.cap-card h3 { font-family: var(--font-display); font-size: 1rem; font-weight: 600; margin-bottom: 0.4rem; color: var(--text-primary); }
.cap-card p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.6; }
.cap-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 0.75rem; }
.cap-tag { padding: 2px 10px; border-radius: 4px; font-size: 0.6rem; font-family: var(--font-mono); background: var(--border); color: var(--text-muted); letter-spacing: 0.02em; }

.cap-bar {
  margin-top: 1rem; height: 2px; border-radius: 1px; background: var(--border); overflow: hidden; opacity: 0.4;
  transition: opacity 0.4s ease;
}
.cap-card:hover .cap-bar { opacity: 1; }
.cap-bar-inner {
  height: 100%; width: 0; border-radius: 1px; background: var(--accent);
  transition: width 0.6s cubic-bezier(0.16,1,0.3,1);
}
.cap-card:hover .cap-bar-inner { width: var(--bar-w, 60%); }

/* ── Tech Stack ── */
#tech { background: var(--bg-secondary); }
.tech-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 1px; background: var(--border); border-radius: var(--radius); overflow: hidden; }
.tech-item { background: var(--bg-secondary); padding: 1.5rem; display: flex; flex-direction: column; align-items: center; text-align: center; gap: 4px; transition: background 0.4s ease; }
.tech-item:hover { background: var(--bg-tertiary); }
.tech-item .tech-cat { font-size: 0.55rem; font-family: var(--font-mono); color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; }
.tech-item .tech-name { font-family: var(--font-display); font-size: 0.8rem; font-weight: 600; color: var(--text-primary); }
.tech-item .tech-stack { font-size: 0.65rem; color: var(--text-muted); }

/* ── Interactive Chat Demo ── */
#usecases { background: var(--bg-primary); }

.demo-layout {
  display: grid; grid-template-columns: 280px 1fr; gap: 1px;
  background: var(--border); border-radius: var(--radius); overflow: hidden;
  min-height: 480px;
}

/* Selector */
.demo-selector {
  background: var(--bg-primary); padding: 0.75rem;
  display: flex; flex-direction: column; gap: 2px;
}
.demo-btn {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 8px;
  background: transparent; border: none;
  color: var(--text-secondary); font-family: var(--font-body);
  font-size: 0.78rem; font-weight: 500; text-align: left;
  cursor: pointer; transition: all 0.3s ease;
  line-height: 1.3;
}
.demo-btn:hover { background: rgba(255,255,255,0.03); color: var(--text-primary); }
.demo-btn.active { background: var(--accent-dim); color: var(--accent); }
.demo-btn .d-icon {
  width: 26px; height: 26px; border-radius: 6px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--border); color: var(--text-muted);
  transition: all 0.3s ease;
}
.demo-btn.active .d-icon { background: var(--accent-dim); color: var(--accent); }
.demo-btn .d-num { font-family: var(--font-mono); font-size: 0.55rem; color: var(--text-muted); flex-shrink: 0; }
.demo-btn.active .d-num { color: var(--accent); }

/* Chat window */
.chat-window {
  background: var(--bg-primary);
  display: flex; flex-direction: column; height: 100%; min-height: 480px;
}
.chat-header {
  display: flex; align-items: center; gap: 8px;
  padding: 0.75rem 1.25rem; border-bottom: 1px solid var(--border);
  font-family: var(--font-display); font-size: 0.8rem; font-weight: 600;
  color: var(--text-primary);
}
.chat-hdot {
  width: 5px; height: 5px; border-radius: 50%; background: var(--accent);
  animation: pulseDot 2s ease-in-out infinite;
}
.chat-hlabel { font-family: var(--font-mono); font-size: 0.55rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; margin-left: auto; }

.chat-messages {
  flex: 1; overflow-y: auto; padding: 1.25rem;
  display: flex; flex-direction: column; gap: 0.75rem;
}
.chat-msg {
  max-width: 85%; padding: 0.65rem 1rem; border-radius: 10px;
  font-size: 0.82rem; line-height: 1.55;
  opacity: 0; transform: translateY(8px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.chat-msg.show { opacity: 1; transform: translateY(0); }
.chat-msg.user {
  align-self: flex-end; background: var(--bg-tertiary); color: var(--text-primary);
  border-bottom-right-radius: 3px;
}
.chat-msg.friday {
  align-self: flex-start; background: var(--accent-dim); color: var(--text-primary);
  border-bottom-left-radius: 3px;
}
.chat-msg.friday .tag {
  font-family: var(--font-mono); font-size: 0.55rem; color: var(--accent);
  display: block; margin-bottom: 0.25rem; letter-spacing: 0.05em;
}

.typing-indicator {
  display: flex; align-items: center; gap: 4px;
  padding: 0.65rem 1rem; max-width: 60px;
  align-self: flex-start; background: var(--accent-dim);
  border-radius: 10px; border-bottom-left-radius: 3px;
  opacity: 0; transition: opacity 0.3s ease;
}
.typing-indicator.active { opacity: 1; }
.typing-indicator span {
  width: 5px; height: 5px; border-radius: 50%; background: var(--accent);
  animation: typingBounce 1.2s ease-in-out infinite;
}
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typingBounce { 0%,60%,100% { transform: translateY(0); opacity: 0.3; } 30% { transform: translateY(-5px); opacity: 1; } }

.chat-footer {
  padding: 0.75rem 1.25rem; border-top: 1px solid var(--border);
  display: flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-muted);
}
.chat-prompt { color: var(--accent); }
.chat-cursor {
  width: 6px; height: 14px; background: var(--accent);
  animation: blink 1s step-end infinite;
}
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0; } }

/* ── Architecture ── */
#architecture { background: var(--bg-secondary); }
.arch-flow { display: flex; flex-direction: column; align-items: center; gap: 0; }
.arch-row { display: flex; gap: 1px; background: var(--border); border-radius: var(--radius); overflow: hidden; width: 100%; }
.arch-node { flex: 1; background: var(--bg-secondary); padding: 1.5rem; text-align: center; transition: background 0.4s ease; }
.arch-node:hover { background: var(--bg-tertiary); }
.arch-node .arch-label { font-size: 0.6rem; font-family: var(--font-mono); color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 0.25rem; }
.arch-node .arch-value { font-family: var(--font-display); font-size: 0.85rem; font-weight: 600; color: var(--text-primary); }
.arch-connector { text-align: center; padding: 0.75rem 0; color: var(--text-muted); font-size: 1.2rem; opacity: 0.3; }

/* ── Activation ── */
#activation { background: var(--bg-primary); }
.activation-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--border); border-radius: var(--radius); overflow: hidden; }
.activation-card { background: var(--bg-primary); padding: 2rem; text-align: center; transition: background 0.4s ease; }
.activation-card:hover { background: var(--bg-secondary); }
.activation-key { font-family: var(--font-mono); font-size: 0.75rem; font-weight: 500; color: var(--accent); background: var(--accent-dim); display: inline-block; padding: 4px 12px; border-radius: 6px; margin-bottom: 0.75rem; }
.activation-card h4 { font-family: var(--font-display); font-size: 0.85rem; font-weight: 600; margin-bottom: 0.35rem; color: var(--text-primary); }
.activation-card p { font-size: 0.75rem; color: var(--text-muted); line-height: 1.5; }

/* ── Footer ── */
footer { background: var(--bg-secondary); border-top: 1px solid var(--border); padding: 3rem 2rem; text-align: center; }
.footer-brand { font-family: var(--font-display); font-size: 1.1rem; font-weight: 700; color: var(--text-primary); letter-spacing: -0.01em; margin-bottom: 0.25rem; }
.footer-sub { color: var(--text-muted); font-size: 0.75rem; }
.footer-links { display: flex; justify-content: center; gap: 2rem; margin: 1.5rem 0; list-style: none; }
.footer-links a { color: var(--text-muted); text-decoration: none; font-size: 0.75rem; transition: color 0.3s ease; }
.footer-links a:hover { color: var(--accent); }

/* ── Scroll Reveal ── */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.8s cubic-bezier(0.16,1,0.3,1), transform 0.8s cubic-bezier(0.16,1,0.3,1); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-d1 { transition-delay: 0.05s; }
.reveal-d2 { transition-delay: 0.1s; }
.reveal-d3 { transition-delay: 0.15s; }
.reveal-d4 { transition-delay: 0.2s; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .identity-grid { grid-template-columns: 1fr; }
  .caps-grid { grid-template-columns: repeat(2, 1fr); }
  .demo-layout { grid-template-columns: 1fr; }
  .demo-selector { flex-direction: row; flex-wrap: wrap; padding: 0.5rem; gap: 3px; }
  .demo-btn { flex: 1; min-width: 100px; padding: 8px 10px; }
  .demo-btn .d-num { display: none; }
  .activation-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  nav { padding: 0 1rem; }
  .nav-links {
    position: fixed; top: 56px; left: 0; right: 0;
    flex-direction: column; background: rgba(10,10,12,0.98); backdrop-filter: blur(20px);
    padding: 2rem; gap: 1.5rem; border-bottom: 1px solid var(--border);
    transform: translateY(-120%); transition: transform 0.5s cubic-bezier(0.16,1,0.3,1);
  }
  .nav-links.open { transform: translateY(0); }
  .nav-toggle { display: flex; }
  section { padding: 4rem 1rem; }
  .section-header { margin-bottom: 2.5rem; }
  .caps-grid { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .demo-selector { overflow-x: auto; flex-wrap: nowrap; }
  .demo-btn { min-width: 130px; flex-shrink: 0; }
  .activation-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .activation-grid { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; align-items: center; }
  .btn { width: 100%; justify-content: center; }
}