/* Reset & Variables */
:root {
  --bg-color: #0A0A0A;
  --panel-bg: rgba(255, 255, 255, 0.05);
  --panel-border: rgba(255, 255, 255, 0.1);
  --text-primary: #FFFFFF;
  --text-secondary: #A0A0A0;
  --accent: #4285F4;
  --accent-hover: #3b76db;
  --card-glow: rgba(66, 133, 244, 0.2);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  background-image: radial-gradient(circle at 15% 50%, rgba(66, 133, 244, 0.15), transparent 25%),
                    radial-gradient(circle at 85% 30%, rgba(52, 168, 83, 0.1), transparent 25%);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

/* Header & Hero */
.hero {
  text-align: center;
  padding: 4rem 0 2rem;
  animation: fadeInDown 0.8s ease-out;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  background: -webkit-linear-gradient(45deg, #4285F4, #EA4335, #FBBC05, #34A853);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
}

.meta-info {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-top: 1.5rem;
  color: var(--text-secondary);
}

/* Search Bar */
.search-container {
  margin: 2rem auto 4rem;
  max-width: 600px;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 1rem 1.5rem;
  border-radius: 50px;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  color: var(--text-primary);
  font-size: 1.1rem;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  outline: none;
  transition: all 0.3s ease;
}

.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 15px var(--card-glow);
}

/* Schedule Grid */
.schedule {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Talk Card Glassmorphism */
.talk-card {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 2rem;
  position: relative;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
}

.talk-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(120deg, transparent, rgba(255,255,255,0.03), transparent);
  transform: translateX(-100%);
  transition: 0.6s;
}

.talk-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  border-color: rgba(66, 133, 244, 0.4);
}

.talk-card:hover::before {
  transform: translateX(100%);
}

/* Break Card */
.break-card {
  text-align: center;
  background: rgba(52, 168, 83, 0.05);
  border-color: rgba(52, 168, 83, 0.2);
}

.talk-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.talk-time {
  font-weight: 600;
  color: var(--accent);
}

.talk-category {
  font-size: 0.85rem;
  padding: 0.25rem 0.75rem;
  background: rgba(255,255,255,0.1);
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.talk-title {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.talk-description {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 1.5rem;
}

.speakers {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.speaker {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.speaker a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s;
}

.speaker a:hover {
  color: var(--accent);
}

/* Loading & Empty States */
.loading, .no-results {
  text-align: center;
  padding: 4rem;
  color: var(--text-secondary);
  font-size: 1.2rem;
}

/* Animations */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
  .hero h1 { font-size: 2.5rem; }
  .talk-header { flex-direction: column; gap: 0.5rem; }
}