:root {
  --bg-color: #0f172a;
  --text-color: #f8fafc;
  --text-muted: #94a3b8;
  --accent-gold: #fbbf24;
  --accent-gold-hover: #f59e0b;
  --glass-bg: rgba(15, 23, 42, 0.45);
  --glass-border: rgba(255, 255, 255, 0.15);
  --font-family: 'Inter', -apple-system, sans-serif;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-family);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
  filter: brightness(0.9) contrast(1.05);
}

.overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(15, 23, 42, 0.05) 0%, rgba(15, 23, 42, 0.75) 100%);
  z-index: 2;
}

.content {
  position: relative;
  z-index: 3;
  width: 100%;
  max-width: 800px;
  padding: 3rem 2rem;
  margin: 1rem;
  text-align: center;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
  animation: fadeUp 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

h1 {
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 800;
  margin-bottom: 1rem;
  background: linear-gradient(to right, #fde68a, var(--accent-gold), #f59e0b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.subtitle {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  color: var(--text-muted);
  margin-bottom: 3rem;
  font-weight: 500;
}

.event-details {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-bottom: 3rem;
  border-top: 1px solid var(--glass-border);
  border-bottom: 1px solid var(--glass-border);
  padding: 2.5rem 0;
}

@media (min-width: 640px) {
  .event-details {
    flex-direction: row;
    justify-content: space-evenly;
  }
}

.detail-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.detail-icon {
  font-size: 2rem;
  margin-bottom: 0.25rem;
  filter: drop-shadow(0 0 10px rgba(251, 191, 36, 0.3));
}

.detail-label {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 700;
}

.detail-value {
  font-size: 1.25rem;
  font-weight: 600;
}

.detail-value a {
  color: var(--text-color);
  text-decoration: underline;
  text-decoration-color: var(--accent-gold);
  text-underline-offset: 6px;
  transition: color 0.2s ease;
}

.detail-value a:hover {
  color: var(--accent-gold);
}

.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--accent-gold);
  color: #000;
  font-weight: 800;
  font-size: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 1.25rem 3rem;
  border-radius: 9999px;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 10px 25px -5px rgba(251, 191, 36, 0.4);
}

.cta-button:hover {
  background-color: var(--accent-gold-hover);
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 15px 30px -5px rgba(251, 191, 36, 0.6);
}

.cta-note {
  display: block;
  margin-top: 1.25rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Form Styles */
.promo-nav {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  padding: 1.5rem 2rem;
  display: flex;
  justify-content: flex-end;
  gap: 2rem;
  z-index: 10;
}

.promo-nav a {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  opacity: 0.8;
  transition: opacity 0.2s, color 0.2s;
  text-shadow: 0 2px 4px rgba(0,0,0,0.8);
}

.promo-nav a:hover, .promo-nav a.active {
  opacity: 1;
  color: var(--accent-gold);
}

.registration-form {
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  text-align: left;
}

.form-group-row {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (min-width: 640px) {
  .form-group-row {
    flex-direction: row;
  }
}

.form-group-row input {
  flex: 1;
}

.registration-form input {
  width: 100%;
  padding: 1rem 1.25rem;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(0, 0, 0, 0.4);
  color: white;
  font-size: 1rem;
  font-family: var(--font-family);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.registration-form input:focus {
  outline: none;
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 2px rgba(251, 191, 36, 0.3);
}

.registration-form input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.form-message {
  text-align: center;
  margin-top: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  min-height: 20px;
}

.form-message.success { color: #10b981; }
.form-message.error { color: #ef4444; }

.cta-button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}