@font-face {
  font-family: 'Gilroy';
  src: url('https://raw.githubusercontent.com/dept/highway/master/docs/assets/fonts/Gilroy-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

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

:root {
  --primary: #1a4d7a;
  --primary-dark: #0f2f4f;
  --primary-light: #2d6ba3;
  --accent: #4a90e2;
  --text: #1a1a1a;
  --text-light: #666;
  --bg: #f8f9fa;
  --white: #ffffff;
  --border: #e0e0e0;
  --border-light: #f0f0f0;
  --success: #28a745;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.15);
  --radius: 8px;
  --radius-sm: 4px;
}

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

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px 20px;
}

/* Links */
a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  text-decoration: none;
  color: var(--primary-light);
}

.back-link {
  display: inline-block;
  margin-bottom: 24px;
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s;
}

.back-link:hover {
  color: var(--primary-light);
}

/* Badges & Subcodes */
.session-badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}

.session-badge.plenary {
  background: #e3f2fd;
  color: #1565c0;
}

.session-badge.breakout {
  background: #f3e5f5;
  color: #7b1fa2;
}

.session-badge.special {
  background: #fff3e0;
  color: #e65100;
}

.session-badge.poster {
  background: #e8f5e9;
  color: #2e7d32;
}

.session-badge.meal {
  background: #fce4ec;
  color: #c2185b;
}

.session-badge.break {
  background: #e3e3e3;
  color: #424242;
}

.session-badge.workshop {
  background: #e0f2f1;
  color: #00695c;
}

.session-badge.lecture {
  background: #e8eaf6;
  color: #283593;
}

.session-badge.networking {
  background: #fff8e1;
  color: #ff8f00;
}

.session-badge.panel {
  background: #f3e5f5;
  color: #7b1fa2;
}

.subcode {
  display: inline-block;
  font-weight: 900;
  letter-spacing: 0.3px;
  padding: 2px 6px;
  border-radius: 6px;
  background: #fff;
  color: #111827;
  border: 1px solid var(--border);
  font-size: 0.72rem;
  margin-left: 6px;
}

/* Avatars */
.avatars {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  overflow: hidden;
  position: relative;
  border: 2px solid var(--white);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  transition: all 0.2s ease;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1a4d7a 0%, #2d6ba3 100%);
  color: white;
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
}

.avatar:hover {
  transform: scale(1.15);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  z-index: 5;
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Error Message */
.error-message {
  background: #fee;
  border: 1px solid #fcc;
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  color: #c33;
}

/* Typography Helpers */
h1 {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 12px;
  line-height: 1.2;
}