/* ============================================================
   FREQUENCY — Festival Teaser Site
   Futuristic + Nature/Camping Vibes
   ============================================================ */

:root {
  --bg: #060810;
  --surface: #0d1018;
  --surface-light: #151a28;
  --neon-cyan: #00f0ff;
  --neon-magenta: #ff00aa;
  --neon-purple: #b000ff;
  --neon-pink: #ff2d95;
  --forest-green: #1aff8c;
  --forest-dark: #0a3d2a;
  --amber: #ffb830;
  --text: #e8e8f0;
  --text-dim: #7888aa;
  --gradient-main: linear-gradient(135deg, var(--neon-cyan), var(--forest-green));
  --gradient-alt: linear-gradient(135deg, var(--neon-purple), var(--neon-pink));
  --gradient-nature: linear-gradient(135deg, var(--forest-green), var(--neon-cyan));
  --radius: 8px;
  --radius-lg: 16px;
  --font-display: 'Orbitron', sans-serif;
  --font-body: 'Inter', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  line-height: 1.6;
}

/* Background canvas — particle field */
#bg-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* Film grain overlay */
.noise-overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 1;
  pointer-events: none;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='https://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
}

/* ============================================================
   SCROLL-DRIVEN SCENE LAYERS
   ============================================================ */
.scene-layer {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  transition: opacity 0.1s ease;
}

/* Starfield */
.scene-stars {
  z-index: 0;
  opacity: 1;
}

.star {
  position: absolute;
  border-radius: 50%;
  background: #fff;
  animation: twinkle var(--duration) ease-in-out infinite;
  animation-delay: var(--delay);
}

@keyframes twinkle {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* Mountains */
.scene-mountains {
  z-index: 1;
  bottom: 0; top: auto;
  height: 50vh;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1.2s ease, transform 1.2s ease;
}

.scene-mountains.active {
  opacity: 1;
  transform: translateY(0);
}

.scene-mountains svg {
  position: absolute;
  bottom: 0;
  width: 100%;
  height: 100%;
}

/* Tree line */
.scene-trees {
  z-index: 2;
  bottom: 0; top: auto;
  height: 35vh;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1.5s ease 0.3s, transform 1.5s ease 0.3s;
}

.scene-trees.active {
  opacity: 1;
  transform: translateY(0);
}

.scene-trees svg {
  position: absolute;
  bottom: 0;
  width: 100%;
  height: 100%;
}

/* Fog layer */
.scene-fog {
  z-index: 3;
  background: linear-gradient(to top, rgba(6,8,16,0.8) 0%, transparent 40%);
  opacity: 0;
  transition: opacity 2s ease;
}

.scene-fog.active {
  opacity: 1;
}

/* Fireflies */
.scene-fireflies {
  z-index: 4;
  opacity: 0;
  transition: opacity 1.5s ease 0.5s;
}

.scene-fireflies.active {
  opacity: 1;
}

.firefly {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 8px 3px rgba(255, 184, 48, 0.6), 0 0 20px 6px rgba(255, 184, 48, 0.2);
  animation: fireflyFloat var(--duration) ease-in-out infinite, fireflyGlow var(--glow-dur) ease-in-out infinite;
  animation-delay: var(--delay);
}

@keyframes fireflyFloat {
  0%, 100% { transform: translate(0, 0); }
  25% { transform: translate(var(--dx1), var(--dy1)); }
  50% { transform: translate(var(--dx2), var(--dy2)); }
  75% { transform: translate(var(--dx3), var(--dy3)); }
}

@keyframes fireflyGlow {
  0%, 100% { opacity: 0.2; }
  50% { opacity: 1; }
}

/* ============================================================
   CONTENT
   ============================================================ */
.content {
  position: relative;
  z-index: 10;
}

/* ---- HERO ---- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}

.hero-inner {
  max-width: 800px;
}

.hero-pre {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 0.85rem;
  letter-spacing: 0.4em;
  color: var(--neon-cyan);
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  animation: fadeInDown 1s ease 0.2s both;
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 7vw, 6rem);
  letter-spacing: 0.02em;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  margin-bottom: 1rem;
  animation: fadeInUp 1s ease 0.4s both;
  text-shadow: none;
  white-space: nowrap;
}

.hero-sub {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(0.9rem, 2.5vw, 1.3rem);
  letter-spacing: 0.25em;
  color: var(--text-dim);
  margin-bottom: 1rem;
  animation: fadeInUp 1s ease 0.6s both;
}

.hero-date-tease {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  color: var(--amber);
  margin-bottom: 2.5rem;
  animation: fadeInUp 1s ease 0.8s both, pulse 3s ease-in-out infinite 2s;
}

@keyframes pulse {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 1; }
}

.hero-cta {
  display: inline-block;
  text-decoration: none;
  animation: fadeInUp 1s ease 1s both;
}

/* ---- PARALLAX DIVIDERS ---- */
.parallax-divider {
  position: relative;
  height: 40vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.divider-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1rem, 3vw, 1.6rem);
  letter-spacing: 0.35em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0, 240, 255, 0.3);
  text-align: center;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 1s ease, transform 1s ease;
}

.parallax-divider.visible .divider-text {
  opacity: 1;
  transform: translateY(0);
}

/* ---- SECTIONS ---- */
.section {
  max-width: 900px;
  margin: 0 auto;
  padding: 6rem 2rem;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.section.visible {
  opacity: 1;
  transform: translateY(0);
}

.section-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  letter-spacing: 0.1em;
  text-align: center;
  margin-bottom: 1.5rem;
  background: var(--gradient-alt);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---- ABOUT ---- */
.about-text {
  text-align: center;
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-dim);
  max-width: 650px;
  margin: 0 auto 3rem;
}

.about-text strong {
  color: var(--forest-green);
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
}

.feature {
  background: var(--surface);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.feature:hover {
  transform: translateY(-4px);
  border-color: rgba(26, 255, 140, 0.25);
  box-shadow: 0 8px 40px rgba(26, 255, 140, 0.06);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
  background: var(--gradient-nature);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.feature h3 {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.feature p {
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.5;
}

/* ---- FORMS ---- */
.signup, .vote {
  text-align: center;
}

.signup {
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.06);
  max-width: 600px;
  padding: 4rem 2.5rem;
}

.signup-text, .vote-text {
  color: var(--text-dim);
  margin-bottom: 2rem;
  font-size: 1rem;
}

.signup-form, .vote-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 400px;
  margin: 0 auto;
}

.form-input {
  background: var(--bg);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 0.9rem 1.2rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text);
  outline: none;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-input:focus {
  border-color: var(--forest-green);
  box-shadow: 0 0 0 3px rgba(26, 255, 140, 0.1);
}

.form-input::placeholder {
  color: var(--text-dim);
}

/* Buttons */
.btn {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  padding: 1rem 2rem;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-main);
  color: var(--bg);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(26, 255, 140, 0.3);
}

.btn-secondary {
  background: var(--gradient-alt);
  color: #fff;
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(176, 0, 255, 0.3);
}

.btn:active {
  transform: translateY(0);
}

/* Genre tags */
.genre-picks {
  margin-top: 0.5rem;
}

.genre-label {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
}

.genre-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.genre-tag {
  cursor: pointer;
}

.genre-tag input {
  display: none;
}

.genre-tag span {
  display: inline-block;
  padding: 0.4rem 0.9rem;
  border-radius: 100px;
  border: 1px solid rgba(255,255,255,0.12);
  font-size: 0.8rem;
  color: var(--text-dim);
  background: var(--surface);
  transition: all 0.25s ease;
  user-select: none;
}

.genre-tag:hover span {
  border-color: var(--neon-purple);
  color: var(--text);
}

.genre-tag input:checked + span {
  background: var(--neon-purple);
  border-color: var(--neon-purple);
  color: #fff;
  box-shadow: 0 0 12px rgba(176, 0, 255, 0.4);
}

/* Confirmations */
.signup-confirm, .vote-confirm {
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  color: var(--forest-green);
  margin-top: 1.5rem;
  animation: fadeInUp 0.5s ease both;
}

/* Vote section */
.vote {
  max-width: 600px;
}

/* ---- FOOTER ---- */
.footer {
  text-align: center;
  padding: 4rem 2rem;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.2em;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1.5rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.social-link {
  color: var(--text-dim);
  transition: color 0.3s ease, transform 0.3s ease;
}

.social-link:hover {
  color: var(--forest-green);
  transform: translateY(-2px);
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--text-dim);
}

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

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---- RESPONSIVE ---- */
@media (max-width: 600px) {
  .signup {
    padding: 3rem 1.5rem;
  }

  .section {
    padding: 4rem 1.25rem;
  }

  .features {
    grid-template-columns: 1fr;
  }

  .parallax-divider {
    height: 25vh;
  }

  .divider-text {
    letter-spacing: 0.15em;
  }
}