/* ===== RESET & BASE ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #0a0a0f;
  --bg-subtle: #12121a;
  --text: #e5e5e5;
  --text-muted: #9ca3af;
  --accent: #00D4FF;
  --accent-dim: rgba(0, 212, 255, 0.1);
  --accent-border: rgba(0, 212, 255, 0.1);
  --card-bg: #15151f;
  --card-border: rgba(255, 255, 255, 0.06);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --max-text: 720px;
  --section-gap: 120px;
}

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: var(--font);
  font-size: 18px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; transition: opacity 0.2s; }
a:hover { opacity: 0.8; }

img { max-width: 100%; display: block; }

.accent { color: var(--accent); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 16px;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  text-align: center;
}
.btn-primary {
  background: var(--accent);
  color: #0a0a0f;
}
.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); }
.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}
.btn-outline:hover { background: var(--accent-dim); }

/* ===== NAV ===== */
#nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--card-border);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 2px;
  color: var(--text);
}
.nav-logo:hover { color: var(--accent); opacity: 1; }
.nav-links {
  list-style: none;
  display: flex;
  gap: 32px;
  align-items: center;
}
.nav-links a {
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); opacity: 1; }
.nav-cta {
  color: var(--accent) !important;
  padding: 8px 20px;
  border: 1px solid var(--accent);
  border-radius: 6px;
}
.nav-cta:hover { background: var(--accent-dim); }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: all 0.3s;
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== HERO ===== */
#hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px 24px 60px;
  position: relative;
}
.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 60px;
  align-items: center;
}
.hero-text h1 {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 24px;
}
.hero-sub {
  font-size: 18px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: var(--max-text);
}
.hero-ctas { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-image { display: flex; justify-content: center; }
.headshot-placeholder {
  width: 280px;
  height: 340px;
  border-radius: 16px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 14px;
}
.scroll-hint {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 24px;
  color: var(--text-muted);
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ===== STATS BAR ===== */
#stats {
  padding: 48px 24px;
  border-top: 1px solid var(--accent-border);
  border-bottom: 1px solid var(--accent-border);
  background: var(--bg-subtle);
}
.stats-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
}
.stat {
  text-align: center;
  padding: 0 40px;
}
.stat-number {
  display: block;
  font-size: 36px;
  font-weight: 800;
  color: var(--accent);
}
.stat-label {
  display: block;
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 4px;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--accent-border);
}

/* ===== PARTNER LOGOS ===== */
#partners {
  padding: 48px 0;
  overflow: hidden;
}
.partners-label {
  text-align: center;
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--text-muted);
  margin-bottom: 24px;
  font-weight: 600;
}
.logo-scroll { overflow: hidden; }
.logo-track {
  display: flex;
  gap: 48px;
  animation: scroll-logos 30s linear infinite;
  width: max-content;
}
.logo-item {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
  opacity: 0.5;
  transition: opacity 0.3s, color 0.3s;
}
.logo-item:hover { opacity: 1; color: var(--text); }
@keyframes scroll-logos {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ===== SECTIONS ===== */
.section {
  padding: var(--section-gap) 24px;
  border-top: 1px solid var(--accent-border);
}
.container {
  max-width: 1200px;
  margin: 0 auto;
}
h2 {
  font-size: clamp(32px, 4vw, 42px);
  font-weight: 800;
  margin-bottom: 48px;
  letter-spacing: -0.5px;
}
.section-sub {
  color: var(--text-muted);
  font-size: 18px;
  margin-top: -32px;
  margin-bottom: 48px;
}

/* ===== ABOUT ===== */
.about-content {
  max-width: var(--max-text);
}
.about-content p {
  margin-bottom: 20px;
  color: var(--text-muted);
}
.about-content p:first-child { color: var(--text); }

/* ===== SPEAKING ===== */
.speaking-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.speaking-image { width: 100%; }
.speaking-placeholder {
  width: 100%;
  aspect-ratio: 16/9;
  border-radius: 12px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 14px;
}
.speaking-text h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
}
.speaking-text p { color: var(--text-muted); }

/* ===== CASE STUDIES ===== */
.cases-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.case-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.3s;
}
.case-card:hover { border-color: rgba(0, 212, 255, 0.2); }
.case-header {
  padding: 28px;
  cursor: pointer;
}
.case-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.case-badge {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 4px 10px;
  border-radius: 4px;
}
.badge-chaingpt { background: rgba(0, 212, 255, 0.15); color: var(--accent); }
.badge-founder { background: rgba(255, 180, 0, 0.15); color: #FFB400; }
.case-year { font-size: 13px; color: var(--text-muted); }
.case-header h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}
.case-summary {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.case-toggle {
  font-size: 14px;
  color: var(--accent);
  font-weight: 600;
}
.case-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.case-card[data-expanded="true"] .case-body {
  max-height: 1000px;
}
.case-card[data-expanded="true"] .case-toggle::after { content: ''; }
.case-section {
  padding: 0 28px 20px;
}
.case-section h4 {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.case-section p {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.results-list {
  list-style: none;
  padding: 0;
}
.results-list li {
  font-size: 15px;
  color: var(--text-muted);
  padding: 4px 0 4px 20px;
  position: relative;
}
.results-list li::before {
  content: '>';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

/* ===== NOW ===== */
.now-content {
  max-width: var(--max-text);
}
.now-content p {
  color: var(--text-muted);
  margin-bottom: 20px;
}
.now-content .btn { margin-top: 12px; }

/* ===== SKILLS ===== */
.skills-pillars {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  margin-bottom: 48px;
}
.skill-pillar {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 28px;
}
.skill-pillar h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}
.skill-pillar p {
  font-size: 15px;
  color: var(--text-muted);
}
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag {
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 20px;
  background: var(--accent-dim);
  color: var(--text-muted);
  border: 1px solid var(--accent-border);
  transition: color 0.2s, border-color 0.2s;
}
.tag:hover { color: var(--accent); border-color: rgba(0, 212, 255, 0.3); }

/* ===== FIT ===== */
.fit-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}
.fit-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 28px;
}
.fit-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
}
.fit-card p {
  font-size: 15px;
  color: var(--text-muted);
}
.fit-note {
  color: var(--text-muted);
  margin-bottom: 24px;
}

/* ===== CONTACT ===== */
.contact-intro {
  color: var(--text-muted);
  max-width: var(--max-text);
  margin-bottom: 16px;
}
.contact-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 40px 0;
  max-width: 700px;
}
.contact-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 20px 24px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  transition: border-color 0.3s;
  color: var(--text);
}
.contact-btn:hover { border-color: var(--accent); opacity: 1; }
.contact-icon { font-size: 24px; margin-bottom: 8px; }
.contact-btn span:nth-child(2) { font-weight: 600; font-size: 16px; }
.contact-detail { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* ===== FOOTER ===== */
footer {
  padding: 40px 24px;
  border-top: 1px solid var(--card-border);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  color: var(--text-muted);
}
.footer-links {
  display: flex;
  gap: 24px;
}
.footer-links a {
  color: var(--text-muted);
  font-size: 14px;
}
.footer-links a:hover { color: var(--text); }

/* ===== FADE IN ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s, transform 0.6s;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== MOBILE ===== */
@media (max-width: 768px) {
  :root { --section-gap: 80px; }
  body { font-size: 16px; }

  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg);
    padding: 40px 24px;
    gap: 24px;
  }
  .nav-toggle { display: flex; }

  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-image { order: -1; }
  .headshot-placeholder { width: 200px; height: 240px; }

  .stats-inner { flex-direction: column; gap: 20px; }
  .stat-divider { width: 40px; height: 1px; }

  .speaking-card { grid-template-columns: 1fr; }

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

  .skills-pillars { grid-template-columns: 1fr; }

  .fit-cards { grid-template-columns: 1fr; }

  .contact-links { grid-template-columns: 1fr; }

  .footer-inner { flex-direction: column; gap: 16px; text-align: center; }
  .footer-links { flex-wrap: wrap; justify-content: center; }
}

@media (max-width: 480px) {
  .hero-text h1 { font-size: 28px; }
  h2 { font-size: 28px; }
  .stat-number { font-size: 28px; }
}