/* ══════════════════════════════════════
   KYNARA — Marketing Landing Page
   ══════════════════════════════════════ */

:root {
  --bg: #0B0B0F;
  --bg-elevated: #0E0E14;
  --card: #111118;
  --card-hover: #16161F;
  --border: #1E1E2E;
  --border-light: #2A2A3C;
  --purple: #A855F7;
  --pink: #FF2D95;
  --white: #FFFFFF;
  --gray: #6B7280;
  --gray-light: #9CA3AF;
  --max-w: 1080px;
  --section-gap: 104px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

/* ── NAV ── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 0 24px;
  background: rgba(11, 11, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  height: 64px;
  display: flex; align-items: center; justify-content: space-between;
}

.nav-brand {
  font-size: 20px; font-weight: 700;
  letter-spacing: -0.5px;
}

.nav-links { display: flex; align-items: center; gap: 24px; }

.nav-link {
  font-size: 14px; color: var(--gray);
  transition: color 0.2s;
}
.nav-link:hover { color: var(--white); }

.nav-cta {
  font-size: 14px; font-weight: 600;
  padding: 8px 20px; border-radius: 8px;
  background: linear-gradient(135deg, var(--purple), var(--pink));
  color: var(--white);
  transition: opacity 0.2s;
}
.nav-cta:hover { opacity: 0.9; }

/* ── BUTTONS ── */
.btn-primary {
  display: inline-block;
  padding: 14px 36px;
  border-radius: 10px;
  font-size: 16px; font-weight: 600;
  background: linear-gradient(135deg, var(--purple), var(--pink));
  color: var(--white);
  transition: opacity 0.2s, transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 0 24px rgba(168, 85, 247, 0.15);
}
.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 0 32px rgba(168, 85, 247, 0.25);
}

.btn-secondary {
  display: inline-block;
  padding: 14px 36px;
  border-radius: 10px;
  font-size: 16px; font-weight: 600;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--gray);
  transition: color 0.2s, border-color 0.2s;
}
.btn-secondary:hover { color: var(--white); border-color: rgba(168,85,247,0.4); }

/* ══════════════════════════════════════
   HERO
   ══════════════════════════════════════ */
.hero {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 120px 24px 80px;
}

.hero-inner {
  max-width: var(--max-w);
  width: 100%;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 72px;
  align-items: center;
}

.hero-copy { text-align: left; }

.hero h1 {
  font-size: clamp(32px, 4.5vw, 52px);
  font-weight: 800;
  letter-spacing: -2px;
  line-height: 1.08;
  background: linear-gradient(135deg, var(--white) 0%, rgba(255,255,255,0.65) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: clamp(16px, 1.8vw, 19px);
  color: var(--gray);
  margin-top: 20px;
  font-weight: 400;
  letter-spacing: -0.2px;
  line-height: 1.65;
  max-width: 460px;
}

.hero-actions {
  margin-top: 36px;
  display: flex; gap: 14px;
  justify-content: flex-start;
  flex-wrap: wrap;
}

.hero-trust {
  margin-top: 40px;
  font-size: 13px;
  color: var(--gray);
  opacity: 0.6;
  letter-spacing: 0.3px;
}

/* ── HERO PROOF PANEL ── */
.hero-proof {
  display: flex;
  justify-content: center;
  align-items: center;
}

.proof-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px 28px 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  width: 100%;
  max-width: 360px;
  position: relative;
  box-shadow:
    0 0 0 1px rgba(168, 85, 247, 0.06),
    0 8px 40px rgba(0, 0, 0, 0.4),
    0 0 80px rgba(168, 85, 247, 0.04);
}

.proof-source {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
  width: 100%;
}

.proof-source-icon {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: rgba(168, 85, 247, 0.08);
  border: 1px solid rgba(168, 85, 247, 0.2);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}

.proof-source-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.proof-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--white);
}

.proof-sublabel {
  font-size: 12px;
  color: var(--gray);
}

.proof-arrow {
  opacity: 0.35;
  line-height: 0;
}

.proof-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  width: 100%;
}

.proof-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 10px 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  transition: border-color 0.3s, background 0.3s;
}
.proof-card:hover {
  border-color: rgba(168, 85, 247, 0.25);
  background: rgba(168, 85, 247, 0.03);
}

.proof-card-inner {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: rgba(168, 85, 247, 0.06);
  border: 1px solid rgba(168, 85, 247, 0.12);
  display: flex; align-items: center; justify-content: center;
}

.proof-card span {
  font-size: 11px;
  font-weight: 600;
  color: var(--gray);
  letter-spacing: 0.4px;
  text-transform: uppercase;
}

.proof-caption {
  font-size: 12px;
  color: var(--gray);
  opacity: 0.6;
  margin-top: 2px;
  letter-spacing: 0.2px;
}

.proof-chip {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--purple);
  background: rgba(168, 85, 247, 0.08);
  border: 1px solid rgba(168, 85, 247, 0.15);
  border-radius: 20px;
  padding: 5px 14px;
  margin-top: 4px;
}

/* ══════════════════════════════════════
   PROBLEM
   ══════════════════════════════════════ */
.problem {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px var(--section-gap);
  text-align: center;
}

.problem-inner {
  max-width: 620px;
  margin: 0 auto;
}

.problem h2 {
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 20px;
}

.problem p {
  font-size: 17px;
  color: var(--gray);
  line-height: 1.75;
}

/* ══════════════════════════════════════
   TWO MODES
   ══════════════════════════════════════ */
.modes {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px var(--section-gap);
}

.modes-inner { max-width: 840px; margin: 0 auto; }

.modes-inner h2 {
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 800;
  letter-spacing: -1px;
  text-align: center;
  margin-bottom: 48px;
}

.modes-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.mode-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px 32px 36px;
  text-align: center;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}
.mode-card:hover {
  border-color: rgba(168, 85, 247, 0.25);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.mode-card--premium {
  border-color: rgba(168, 85, 247, 0.35);
  background: linear-gradient(180deg, rgba(168,85,247,0.05) 0%, var(--card) 60%);
  box-shadow: 0 0 48px rgba(168, 85, 247, 0.06);
}
.mode-card--premium:hover {
  border-color: rgba(168, 85, 247, 0.55);
  box-shadow: 0 8px 40px rgba(168, 85, 247, 0.1);
}

.mode-badge {
  position: absolute;
  top: 16px; right: 16px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  padding: 4px 12px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--purple), var(--pink));
  color: var(--white);
}

.mode-icon {
  font-size: 32px;
  margin-bottom: 16px;
}

.mode-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--purple);
  margin-bottom: 10px;
}

.mode-card h3 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.3px;
  margin-bottom: 18px;
  line-height: 1.3;
}

.mode-list {
  list-style: none;
  margin-bottom: 20px;
}

.mode-list li {
  font-size: 14px;
  color: var(--gray);
  padding: 5px 0;
  line-height: 1.5;
}

.mode-list li::before {
  content: "—";
  margin-right: 8px;
  color: var(--purple);
  opacity: 0.5;
}

.mode-cta-line {
  font-size: 13px;
  font-weight: 600;
  color: var(--white);
  opacity: 0.7;
  letter-spacing: 0.2px;
}

/* ══════════════════════════════════════
   USE CASES
   ══════════════════════════════════════ */
.usecases {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px var(--section-gap);
}

.usecases-header {
  text-align: center;
  margin-bottom: 48px;
}

.usecases-header h2 {
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 14px;
}

.usecases-header p {
  font-size: 16px;
  color: var(--gray);
  max-width: 540px;
  margin: 0 auto;
  line-height: 1.7;
}

.usecases-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  max-width: 840px;
  margin: 0 auto;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 36px 32px;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}
.card:hover {
  border-color: rgba(168, 85, 247, 0.2);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
}

.card-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--purple);
  margin-bottom: 12px;
}

.card h2,
.card h3 {
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 700;
  letter-spacing: -0.3px;
  line-height: 1.25;
  margin-bottom: 12px;
}

.card p {
  font-size: 15px;
  color: var(--gray);
  line-height: 1.65;
}

/* ══════════════════════════════════════
   AUDIENCE
   ══════════════════════════════════════ */
.audience {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px var(--section-gap);
  text-align: center;
}

.audience h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}

.audience p {
  font-size: 16px;
  color: var(--gray);
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ══════════════════════════════════════
   TRUST
   ══════════════════════════════════════ */
.trust {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px var(--section-gap);
}

.trust-card {
  background: linear-gradient(180deg, rgba(168,85,247,0.03) 0%, var(--card) 40%);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 48px 40px;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  box-shadow: 0 0 48px rgba(168, 85, 247, 0.04);
}

.trust-icon {
  font-size: 28px;
  margin-bottom: 20px;
  opacity: 0.9;
}

.trust-card h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
}

.trust-card p {
  font-size: 15px;
  color: var(--gray);
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.7;
}

.trust-tagline {
  margin-top: 24px;
  font-size: 13px;
  font-weight: 600;
  color: var(--white);
  opacity: 0.5;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* ══════════════════════════════════════
   FAQ
   ══════════════════════════════════════ */
.faq {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px var(--section-gap);
}

.faq h2 {
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 800;
  letter-spacing: -1px;
  text-align: center;
  margin-bottom: 48px;
}

.faq-list {
  max-width: 640px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 8px 0;
  overflow: hidden;
}

.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 0;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-item summary {
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  cursor: pointer;
  padding: 20px 28px;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: color 0.2s;
}
.faq-item summary:hover {
  color: var(--gray-light);
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: "+";
  font-size: 18px;
  font-weight: 400;
  color: var(--gray);
  flex-shrink: 0;
  margin-left: 16px;
  width: 20px;
  text-align: center;
}

.faq-item[open] summary::after {
  content: "\2212";
}

.faq-item p {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.7;
  padding: 0 28px 20px;
  max-width: 560px;
}

/* ══════════════════════════════════════
   FINAL CTA
   ══════════════════════════════════════ */
.final-cta {
  padding: 0 24px var(--section-gap);
}

.final-cta-inner {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 52px 40px;
  box-shadow: 0 0 64px rgba(168, 85, 247, 0.05);
}

.final-cta h2 {
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 28px;
}

/* ══════════════════════════════════════
   FOOTER
   ══════════════════════════════════════ */
.footer {
  border-top: 1px solid var(--border);
  padding: 36px 24px;
  text-align: center;
  font-size: 13px;
  color: var(--gray);
}

/* ══════════════════════════════════════
   FADE-IN ANIMATION
   ══════════════════════════════════════ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ══════════════════════════════════════
   RESPONSIVE (MOBILE)
   ══════════════════════════════════════ */
@media (max-width: 640px) {
  :root { --section-gap: 64px; }

  .nav-inner { height: 56px; }
  .nav-brand { font-size: 18px; }
  .nav-link { display: none; }
  .nav-cta { font-size: 13px; padding: 7px 16px; }

  .hero { padding: 84px 20px 40px; }
  .hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .hero-copy { text-align: center; }
  .hero-sub { max-width: none; }
  .hero-actions { flex-direction: column; align-items: center; justify-content: center; gap: 10px; }
  .hero-trust { margin-top: 28px; }

  .btn-primary {
    width: 100%;
    max-width: 300px;
    text-align: center;
    padding: 14px 32px;
  }

  .btn-secondary {
    width: 100%;
    max-width: 300px;
    text-align: center;
    padding: 10px 32px;
    font-size: 14px;
    border: none;
    opacity: 0.7;
  }

  .proof-panel {
    max-width: 280px;
    padding: 20px 16px 16px;
    gap: 10px;
    border-radius: 16px;
  }

  .proof-source {
    padding: 12px 14px;
    gap: 10px;
    border-radius: 10px;
  }

  .proof-source-icon { width: 36px; height: 36px; }
  .proof-source-icon svg { width: 24px; height: 24px; }
  .proof-label { font-size: 13px; }
  .proof-sublabel { font-size: 11px; }
  .proof-arrow svg { width: 18px; height: 18px; }
  .proof-grid { gap: 6px; }

  .proof-card {
    padding: 12px 8px 10px;
    gap: 6px;
    border-radius: 8px;
  }

  .proof-card-inner {
    width: 28px;
    height: 28px;
    border-radius: 6px;
  }

  .proof-card-inner svg { width: 14px; height: 14px; }
  .proof-card span { font-size: 10px; }
  .proof-caption { font-size: 11px; margin-top: 0; }
  .proof-chip { font-size: 9px; padding: 4px 10px; margin-top: 2px; }

  .problem { padding: 0 20px var(--section-gap); }
  .modes { padding: 0 20px var(--section-gap); }
  .modes-inner h2 { margin-bottom: 32px; }
  .modes-grid { grid-template-columns: 1fr; gap: 14px; }
  .mode-card { padding: 28px 22px 24px; }
  .mode-icon { font-size: 28px; margin-bottom: 12px; }

  .usecases { padding: 0 20px var(--section-gap); }
  .usecases-header { margin-bottom: 32px; }
  .usecases-grid { grid-template-columns: 1fr; max-width: none; gap: 12px; }
  .card { padding: 24px 20px; }

  .audience { padding: 0 20px var(--section-gap); }
  .trust { padding: 0 20px var(--section-gap); }
  .trust-card { padding: 32px 20px; }

  .faq { padding: 0 20px var(--section-gap); }
  .faq h2 { margin-bottom: 32px; }
  .faq-item summary { padding: 16px 18px; font-size: 14px; }
  .faq-item p { padding: 0 18px 16px; font-size: 13px; }

  .final-cta { padding: 0 20px var(--section-gap); }
  .final-cta-inner { padding: 36px 20px; border-radius: 16px; }
  .final-cta h2 { margin-bottom: 24px; }
}