/* ── YOU × AI SUMMIT — Global Styles ── */

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

:root {
  --navy:       #0C1A2E;
  --navy-2:     #12243E;
  --gold:       #F5A623;
  --gold-dark:  #C2800E;
  --gold-pale:  #FEF3DC;
  --blue:       #1A6FE0;
  --blue-pale:  #EAF1FD;
  --white:      #FFFFFF;
  --off-white:  #F7F6F2;
  --text-dark:  #0C1A2E;
  --text-mid:   #3D5166;
  --text-muted: #6B8099;
  --border:     #E5E2D8;
  --radius:     10px;
  --radius-lg:  16px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

/* ── TYPOGRAPHY ── */
h1, h2, h3, h4 { letter-spacing: -0.03em; line-height: 1.1; }
a { color: inherit; }

/* ── LAYOUT ── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 6%; }
section { padding: 88px 6%; }

/* ── BUTTONS ── */
.btn-gold {
  display: inline-block;
  background: var(--gold);
  color: var(--navy);
  font-weight: 800;
  font-size: 16px;
  padding: 15px 38px;
  border-radius: 8px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background .15s, transform .1s;
}
.btn-gold:hover { background: #F7B94A; transform: translateY(-1px); }

.btn-outline {
  display: inline-block;
  background: transparent;
  color: #fff;
  font-weight: 600;
  font-size: 16px;
  padding: 15px 38px;
  border-radius: 8px;
  text-decoration: none;
  border: 2px solid rgba(255,255,255,0.3);
  cursor: pointer;
  transition: border-color .15s;
}
.btn-outline:hover { border-color: rgba(255,255,255,0.65); }

/* ── SECTION LABELS ── */
.sec-label-gold  { font-size: 11px; font-weight: 800; letter-spacing: 2.5px; text-transform: uppercase; color: var(--gold); margin-bottom: 12px; display: block; }
.sec-label-blue  { font-size: 11px; font-weight: 800; letter-spacing: 2.5px; text-transform: uppercase; color: var(--blue); margin-bottom: 12px; display: block; }
.sec-label-navy  { font-size: 11px; font-weight: 800; letter-spacing: 2.5px; text-transform: uppercase; color: var(--navy); margin-bottom: 12px; display: block; }
.sec-label-muted { font-size: 11px; font-weight: 800; letter-spacing: 2.5px; text-transform: uppercase; color: var(--text-muted); margin-bottom: 12px; display: block; }

.sec-title-white { font-size: clamp(30px,4vw,48px); font-weight: 900; color: #fff; max-width: 700px; margin-bottom: 16px; }
.sec-title-dark  { font-size: clamp(30px,4vw,48px); font-weight: 900; color: var(--navy); max-width: 700px; margin-bottom: 16px; }

.sec-sub-white { font-size: 17px; color: rgba(255,255,255,0.65); max-width: 560px; margin-bottom: 48px; line-height: 1.65; }
.sec-sub-dark  { font-size: 17px; color: var(--text-mid); max-width: 560px; margin-bottom: 48px; line-height: 1.65; }

/* ── TRACK PILLS ── */
.badge-main    { background: var(--gold); color: var(--navy); font-size: 10px; font-weight: 800; letter-spacing: 0.8px; text-transform: uppercase; padding: 4px 11px; border-radius: 100px; }
.badge-ai      { background: var(--blue); color: #fff; font-size: 10px; font-weight: 800; letter-spacing: 0.8px; text-transform: uppercase; padding: 4px 11px; border-radius: 100px; }
.badge-creator { background: #4CAF50; color: #fff; font-size: 10px; font-weight: 800; letter-spacing: 0.8px; text-transform: uppercase; padding: 4px 11px; border-radius: 100px; }

/* ── SPEAKER CARDS ── */
.speakers-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px,1fr)); gap: 20px; }

.speaker-card {
  background: var(--navy-2);
  border: 1.5px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color .2s, transform .2s;
  text-decoration: none;
  display: block;
}
.speaker-card:hover { border-color: var(--gold); transform: translateY(-4px); }
.speaker-card.featured { border-color: var(--gold); }

.spk-avatar {
  width: 100%;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  font-weight: 900;
  position: relative;
  overflow: hidden;
  background: #0D2A4A;
  color: var(--blue);
}
.spk-avatar img { width: 100%; height: 100%; object-fit: cover; object-position: center top; display: block; }

.spk-badge {
  position: absolute;
  top: 12px;
  right: 12px;
}

.spk-info { padding: 18px 18px 22px; }
.spk-name  { font-size: 16px; font-weight: 800; color: #fff; margin-bottom: 3px; }
.spk-title { font-size: 12px; color: rgba(255,255,255,0.5); line-height: 1.4; margin-bottom: 12px; }
.spk-topic {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  font-style: italic;
  line-height: 1.45;
  border-top: 1px solid rgba(255,255,255,0.07);
  padding-top: 12px;
}

/* ── BLOG / INTERVIEW CARDS ── */
.posts-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px,1fr)); gap: 24px; }

.post-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  display: block;
  transition: border-color .2s, transform .2s;
}
.post-card:hover { border-color: var(--gold-dark); transform: translateY(-3px); }

.post-thumb {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--navy);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  overflow: hidden;
}
.post-thumb img { width: 100%; height: 100%; object-fit: cover; }
.post-thumb.video-thumb { cursor: pointer; position: relative; }
.play-icon {
  position: absolute;
  width: 56px; height: 56px;
  background: rgba(245,166,35,0.92);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
}

.post-body { padding: 20px 24px 24px; }
.post-meta { font-size: 11px; font-weight: 700; color: var(--text-muted); letter-spacing: 0.5px; text-transform: uppercase; margin-bottom: 8px; }
.post-title { font-size: 17px; font-weight: 800; color: var(--navy); margin-bottom: 8px; line-height: 1.3; }
.post-desc  { font-size: 14px; color: var(--text-mid); line-height: 1.6; }

/* ── RESPONSIVE ── */
@media (max-width: 720px) {
  .speakers-grid { grid-template-columns: repeat(2, 1fr); }
  .posts-grid { grid-template-columns: 1fr; }
  section { padding: 60px 5%; }
}