/* ════════════════════ ThirdEye — Marketing Site ════════════════════ */

:root {
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --accent: #3b82f6;
  --accent-2: #22d3ee;
  --danger: #ef4444;
  --radius: 14px;
  --maxw: 1180px;
  --nav-h: 68px;
}

[data-theme="dark"] {
  --bg: #060b16;
  --bg-alt: #0a1322;
  --panel: #0d1726;
  --panel-2: #111e33;
  --border: rgba(148, 163, 184, 0.14);
  --text: #e6edf6;
  --text-2: #94a3b8;
  --text-3: #64748b;
  --nav-bg: rgba(6, 11, 22, 0.82);
  --hero-line: rgba(59, 130, 246, 0.5);
  --hero-node: rgba(96, 165, 250, 0.9);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  --card-glow: 0 8px 40px rgba(59, 130, 246, 0.13);
}

[data-theme="light"] {
  --bg: #f7fafd;
  --bg-alt: #eef3f9;
  --panel: #ffffff;
  --panel-2: #f1f5fb;
  --border: rgba(15, 23, 42, 0.10);
  --text: #0f172a;
  --text-2: #475569;
  --text-3: #64748b;
  --nav-bg: rgba(247, 250, 253, 0.85);
  --hero-line: rgba(59, 130, 246, 0.35);
  --hero-node: rgba(37, 99, 235, 0.75);
  --shadow: 0 18px 50px rgba(15, 23, 42, 0.10);
  --card-glow: 0 8px 36px rgba(59, 130, 246, 0.12);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 12px); }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background 0.3s, color 0.3s;
}

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

/* ── Buttons ───────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 10px; font-weight: 600; cursor: pointer; border: none;
  transition: all 0.22s ease; white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, #2563eb, #3b82f6);
  color: #fff;
  box-shadow: 0 4px 18px rgba(37, 99, 235, 0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(37, 99, 235, 0.48); }
.btn-ghost {
  background: transparent; color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: 8px 18px; font-size: 13.5px; }
.btn-lg { padding: 14px 34px; font-size: 15.5px; }

/* ── Navbar ───────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}
.nav.scrolled { border-bottom-color: var(--border); }
.nav-inner { display: flex; align-items: center; gap: 28px; height: var(--nav-h); }
.nav-logo img { height: 30px; width: auto; display: block; }
.nav-links { display: flex; gap: 26px; margin-left: 8px; flex: 1; }
.nav-links a {
  font-size: 14px; font-weight: 500; color: var(--text-2);
  transition: color 0.2s; position: relative;
}
.nav-links a:hover { color: var(--text); }
.nav-actions { display: flex; align-items: center; gap: 12px; }

/* dil seçici */
.lang-picker { position: relative; }
.lang-btn {
  display: flex; align-items: center; gap: 7px;
  background: transparent; border: 1px solid var(--border); border-radius: 9px;
  color: var(--text-2); padding: 7px 12px; font-size: 13px; font-weight: 600;
  cursor: pointer; font-family: var(--font); transition: all 0.2s;
}
.lang-btn:hover { border-color: var(--accent); color: var(--text); }
.lang-menu {
  position: absolute; top: calc(100% + 8px); right: 0;
  background: var(--panel); border: 1px solid var(--border); border-radius: 12px;
  box-shadow: var(--shadow); padding: 6px; min-width: 160px;
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: all 0.18s ease;
}
.lang-picker.open .lang-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-menu button {
  display: flex; align-items: center; gap: 8px; width: 100%;
  background: transparent; border: none; border-radius: 8px;
  color: var(--text-2); padding: 9px 12px; font-size: 13.5px; font-weight: 500;
  cursor: pointer; font-family: var(--font); text-align: left; transition: all 0.15s;
}
.lang-menu button:hover { background: var(--panel-2); color: var(--text); }
.lang-menu button.active { color: var(--accent); background: rgba(59, 130, 246, 0.1); }

/* tema butonu */
.theme-btn {
  background: transparent; border: 1px solid var(--border); border-radius: 9px;
  width: 36px; height: 36px; cursor: pointer; font-size: 15px;
  display: flex; align-items: center; justify-content: center; transition: all 0.2s;
}
.theme-btn:hover { border-color: var(--accent); }
[data-theme="dark"] .theme-icon-light { display: none; }
[data-theme="light"] .theme-icon-dark { display: none; }

/* hamburger */
.hamburger { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; padding: 6px; }
.hamburger span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: all 0.25s; }

/* ── Hero ───────────────────────────── */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  padding: calc(var(--nav-h) + 60px) 0 80px;
  overflow: hidden;
}
#heroCanvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-glow {
  position: absolute; top: -20%; left: 50%; transform: translateX(-50%);
  width: 900px; height: 700px; border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.16) 0%, transparent 65%);
  pointer-events: none;
}
.hero-fade {
  position: absolute; bottom: 0; left: 0; right: 0; height: 140px;
  background: linear-gradient(transparent, var(--bg));
  pointer-events: none;
}
.hero-content { position: relative; z-index: 2; text-align: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 9px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 100px;
  padding: 8px 18px; font-size: 13px; font-weight: 600; color: var(--text-2);
  margin-bottom: 28px;
}
.pulse-dot {
  width: 8px; height: 8px; border-radius: 50%; background: #22c55e;
  box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.6);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.55); }
  70% { box-shadow: 0 0 0 9px rgba(34, 197, 94, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}
.hero h1 {
  font-size: clamp(34px, 5.6vw, 62px);
  font-weight: 800; line-height: 1.14; letter-spacing: -0.02em;
  margin-bottom: 24px;
}
.grad {
  background: linear-gradient(110deg, #3b82f6 10%, #22d3ee 55%, #818cf8 95%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.hero-sub {
  max-width: 660px; margin: 0 auto 38px;
  font-size: clamp(15px, 1.8vw, 18px); color: var(--text-2);
}
.hero-ctas { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 64px; }
.hero-stats {
  display: flex; gap: 0; justify-content: center; flex-wrap: wrap;
  border: 1px solid var(--border); border-radius: 16px;
  background: color-mix(in srgb, var(--panel) 72%, transparent);
  backdrop-filter: blur(8px);
  max-width: 820px; margin: 0 auto; overflow: hidden;
}
.hstat {
  flex: 1; min-width: 160px; padding: 22px 18px; text-align: center;
  border-right: 1px solid var(--border);
}
.hstat:last-child { border-right: none; }
.hstat b { display: block; font-size: 26px; font-weight: 800; color: var(--accent); margin-bottom: 2px; }
.hstat span { font-size: 12.5px; color: var(--text-3); font-weight: 500; }

/* ── Sections ───────────────────────────── */
.section { padding: 104px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 60px; }
.kicker {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 0.16em;
  color: var(--accent); margin-bottom: 14px;
}
.section-head h2 { font-size: clamp(26px, 3.6vw, 40px); font-weight: 800; letter-spacing: -0.015em; margin-bottom: 14px; }
.section-head p { color: var(--text-2); font-size: 16px; }

/* ── Features ───────────────────────────── */
.feature-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.fcard {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px 24px; transition: all 0.28s ease;
}
.fcard:hover { transform: translateY(-5px); border-color: rgba(59, 130, 246, 0.45); box-shadow: var(--card-glow); }
.ficon {
  width: 50px; height: 50px; border-radius: 13px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.16), rgba(34, 211, 238, 0.10));
  border: 1px solid rgba(59, 130, 246, 0.22);
  display: flex; align-items: center; justify-content: center;
  font-size: 23px; margin-bottom: 18px;
}
.fcard h3 { font-size: 16.5px; font-weight: 700; margin-bottom: 9px; }
.fcard p { font-size: 13.5px; color: var(--text-2); line-height: 1.62; }

/* ── Screens ───────────────────────────── */
.screen-tabs {
  display: flex; gap: 10px; justify-content: center; margin-bottom: 38px; flex-wrap: wrap;
}
.screen-tab {
  display: flex; align-items: center; gap: 9px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 12px;
  color: var(--text-2); padding: 12px 26px; font-size: 14.5px; font-weight: 600;
  cursor: pointer; font-family: var(--font); transition: all 0.22s;
}
.screen-tab .st-icon { font-size: 17px; }
.screen-tab:hover { color: var(--text); border-color: rgba(59, 130, 246, 0.4); }
.screen-tab.active {
  background: linear-gradient(135deg, #2563eb, #3b82f6); color: #fff;
  border-color: transparent;
  box-shadow: 0 6px 22px rgba(37, 99, 235, 0.35);
}
.screen-panel { display: none; }
.screen-panel.active { display: block; animation: fadeUp 0.45s ease; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }

.browser-frame {
  border-radius: 16px; overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  background: #0a1120;
  max-width: 1020px; margin: 0 auto;
}
.browser-bar {
  display: flex; align-items: center; gap: 7px;
  background: #101b2e; padding: 11px 16px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}
.bdot { width: 11px; height: 11px; border-radius: 50%; }
.bdot.r { background: #f87171; } .bdot.y { background: #fbbf24; } .bdot.g { background: #34d399; }
.burl {
  margin-left: 14px; background: rgba(148, 163, 184, 0.1); border-radius: 7px;
  color: #7d8da3; font-size: 12px; padding: 4px 16px; font-family: var(--font);
}
.mock-svg { display: block; width: 100%; height: auto; }
.screen-desc {
  text-align: center; color: var(--text-2); font-size: 15px;
  max-width: 720px; margin: 26px auto 0;
}

/* ── Use cases ───────────────────────────── */
.uc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.uc-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 34px 26px; text-align: center; transition: all 0.28s ease;
  position: relative; overflow: hidden;
}
.uc-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, #3b82f6, #22d3ee);
  opacity: 0; transition: opacity 0.28s;
}
.uc-card:hover { transform: translateY(-5px); box-shadow: var(--card-glow); border-color: rgba(59, 130, 246, 0.4); }
.uc-card:hover::before { opacity: 1; }
.uc-icon { font-size: 38px; margin-bottom: 16px; }
.uc-card h3 { font-size: 16.5px; font-weight: 700; margin-bottom: 10px; }
.uc-card p { font-size: 13.5px; color: var(--text-2); }

/* ── Tech ───────────────────────────── */
.tech-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.tcard {
  display: flex; gap: 16px; align-items: flex-start;
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; transition: all 0.25s;
}
.tcard:hover { border-color: rgba(59, 130, 246, 0.4); }
.tcard > span { font-size: 26px; line-height: 1; margin-top: 3px; }
.tcard h4 { font-size: 15px; font-weight: 700; margin-bottom: 6px; }
.tcard p { font-size: 13px; color: var(--text-2); }

/* ── About band ───────────────────────────── */
.about-band {
  background:
    radial-gradient(700px 320px at 12% 50%, rgba(59, 130, 246, 0.18), transparent),
    radial-gradient(560px 300px at 88% 40%, rgba(34, 211, 238, 0.12), transparent),
    var(--bg-alt);
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  padding: 84px 0;
}
.about-inner { display: flex; gap: 60px; align-items: center; flex-wrap: wrap; }
.about-text { flex: 1.4; min-width: 300px; }
.about-text h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; margin-bottom: 14px; }
.about-text p { color: var(--text-2); font-size: 15.5px; max-width: 560px; }
.about-stats { flex: 1; display: flex; gap: 18px; min-width: 280px; justify-content: flex-end; flex-wrap: wrap; }
.astat {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px 28px; text-align: center; min-width: 120px;
}
.astat b { display: block; font-size: 30px; font-weight: 800; color: var(--accent); }
.astat span { font-size: 12px; color: var(--text-3); font-weight: 500; }

/* ── Contact ───────────────────────────── */
.contact-inner { text-align: center; max-width: 760px; }
.contact-inner h2 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; margin-bottom: 12px; }
.contact-inner > p { color: var(--text-2); font-size: 16px; margin-bottom: 44px; }
.contact-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; max-width: 620px; margin: 0 auto; }
.ccard {
  display: flex; align-items: center; gap: 15px; text-align: left;
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px; transition: all 0.25s;
}
.ccard:hover { transform: translateY(-4px); border-color: rgba(59, 130, 246, 0.45); box-shadow: var(--card-glow); }
.ccard > span { font-size: 26px; }
.ccard b { display: block; font-size: 13px; color: var(--text-3); font-weight: 600; margin-bottom: 2px; }
.ccard p { font-size: 14.5px; font-weight: 600; color: var(--text); }

/* ── Footer ───────────────────────────── */
.footer { border-top: 1px solid var(--border); padding: 38px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer-brand { display: flex; align-items: center; gap: 16px; }
.footer-brand img { height: 24px; width: auto; }
.footer-brand p { font-size: 13px; color: var(--text-3); }
.footer-meta p { font-size: 13px; color: var(--text-3); }

/* ── Reveal animasyonu ───────────────────────────── */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ── Responsive ───────────────────────────── */
@media (max-width: 1024px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .uc-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
  .nav-links {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    background: var(--nav-bg); backdrop-filter: blur(18px);
    flex-direction: column; gap: 0; padding: 12px 24px 20px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-130%); transition: transform 0.3s ease;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 12px 0; font-size: 15px; }
  .hamburger { display: flex; }
  .nav-actions .btn { display: none; }
  .tech-grid { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; }
  .about-stats { justify-content: flex-start; }
  .hstat { min-width: 130px; }
  .section { padding: 72px 0; }
}
@media (max-width: 520px) {
  .feature-grid { grid-template-columns: 1fr; }
  .uc-grid { grid-template-columns: 1fr; }
}