/* ========================================================
   RUDEL-KARAOKE — Design System
   Dark karaoke atmosphere with neon purple/pink accents
   ======================================================== */

/* --- Reset & Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #0a0a0f;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  --bg-glass: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(168, 85, 247, 0.5);

  --text: #f0f0f5;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;

  --accent-1: #0FABF3;
  /* EuerDon Blue */
  --accent-2: #00E5FF;
  /* Cyan Highlight */
  --accent-3: #ffffff;
  --gradient: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  --gradient-wide: linear-gradient(135deg, var(--accent-1), var(--accent-2), var(--accent-3));
  --glow: 0 0 40px rgba(15, 171, 243, 0.3), 0 0 80px rgba(0, 229, 255, 0.15);

  --radius: 16px;
  --radius-sm: 10px;
  --radius-full: 9999px;

  --font: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

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

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  cursor: pointer;
  font-family: inherit;
}

input,
select,
textarea {
  font-family: inherit;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hidden {
  display: none !important;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border: none;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 20px rgba(168, 85, 247, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(168, 85, 247, 0.5);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  background: var(--bg-card-hover);
  color: var(--text);
}

.btn-lg {
  padding: 16px 40px;
  font-size: 1.15rem;
}

.btn-full {
  width: 100%;
}

/* Pulsing glow animation on primary CTA */
.pulse-glow {
  animation: pulseGlow 2.5s ease-in-out infinite;
}

@keyframes pulseGlow {

  0%,
  100% {
    box-shadow: 0 4px 20px rgba(15, 171, 243, 0.35);
  }

  50% {
    box-shadow: 0 4px 40px rgba(15, 171, 243, 0.6), 0 0 60px rgba(0, 229, 255, 0.25);
  }
}

/* --- Floating Music Notes --- */
#floating-notes {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.music-note {
  position: absolute;
  font-size: 1.5rem;
  opacity: 0;
  animation: floatNote linear infinite;
  pointer-events: none;
}

@keyframes floatNote {
  0% {
    opacity: 0;
    transform: translateY(100vh) rotate(0deg);
  }

  10% {
    opacity: 0.15;
  }

  90% {
    opacity: 0.15;
  }

  100% {
    opacity: 0;
    transform: translateY(-10vh) rotate(360deg);
  }
}

/* --- Navigation --- */
#main-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  background: rgba(10, 10, 15, 0.75);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

#main-nav.scrolled {
  background: rgba(10, 10, 15, 0.92);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--text);
}

.nav-cta {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700 !important;
}

#nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
}

#nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* --- Hero --- */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.15) 0%, rgba(236, 72, 153, 0.08) 40%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 750px;
}

.hero-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent-1);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 24px;
  padding: 6px 16px;
  border: 1px solid rgba(168, 85, 247, 0.3);
  border-radius: var(--radius-full);
}

#hero h1 {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.hero-micro {
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* Countdown */
.countdown {
  margin-bottom: 40px;
}

.countdown-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.countdown-label strong {
  color: var(--text);
}

.countdown-timer {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 28px;
  border-radius: var(--radius);
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
}

.countdown-unit {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 52px;
}

.countdown-number {
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.countdown-text {
  font-size: 0.7rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 4px;
}

.countdown-sep {
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--text-dim);
  margin-bottom: 14px;
}

/* --- Desire Cards --- */
#desire {
  padding: 80px 0;
  position: relative;
}

.desire-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.desire-card {
  padding: 36px 28px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border);
  text-align: center;
  transition: var(--transition);
}

.desire-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(168, 85, 247, 0.2);
  transform: translateY(-4px);
}

.desire-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.desire-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.desire-card p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --- Section Titles --- */
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  text-align: center;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 48px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

/* --- How It Works --- */
#how-it-works {
  padding: 100px 0;
  position: relative;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.step-card {
  position: relative;
  padding: 40px 28px 36px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border);
  text-align: center;
  transition: var(--transition);
  overflow: hidden;
}

.step-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(168, 85, 247, 0.2);
  transform: translateY(-4px);
}

.step-number {
  position: absolute;
  top: 12px;
  right: 16px;
  font-size: 3rem;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.03);
  line-height: 1;
}

.step-icon {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.step-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.step-card p {
  font-size: 0.93rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --- Song Voting --- */
#song-voting {
  padding: 100px 0;
  background: linear-gradient(180deg, transparent, rgba(168, 85, 247, 0.03), transparent);
}

.voting-wrapper {
  max-width: 600px;
  margin: 0 auto;
}

.song-input-area {
  margin-bottom: 28px;
}

.input-group {
  display: flex;
  gap: 12px;
}

.input-group input {
  flex: 1;
  padding: 14px 20px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font-size: 1rem;
  outline: none;
  transition: var(--transition);
}

.input-group input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.15);
}

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

.song-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.song-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: var(--transition);
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.song-item:hover {
  background: var(--bg-card-hover);
}

.song-rank {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-dim);
  min-width: 28px;
}

.song-rank.top {
  color: var(--accent-1);
}

.song-name {
  flex: 1;
  font-weight: 500;
  font-size: 0.95rem;
}

.song-vote-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
}

.song-vote-btn:hover {
  background: rgba(236, 72, 153, 0.1);
  border-color: rgba(236, 72, 153, 0.3);
  color: var(--accent-2);
}

.song-vote-btn.voted {
  background: rgba(236, 72, 153, 0.15);
  border-color: rgba(236, 72, 153, 0.3);
  color: var(--accent-2);
}

.voting-hint {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* --- Social Proof --- */
#proof {
  padding: 100px 0;
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.proof-card {
  padding: 32px 28px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.proof-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-4px);
}

.proof-quote {
  font-size: 1rem;
  font-style: italic;
  line-height: 1.7;
  color: var(--text);
  margin-bottom: 20px;
  position: relative;
  padding-left: 20px;
  border-left: 3px solid;
  border-image: var(--gradient) 1;
}

.proof-author {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.proof-name {
  font-weight: 600;
  font-size: 0.9rem;
}

.proof-event {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.proof-stats {
  display: flex;
  justify-content: center;
  gap: 60px;
  padding: 40px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.stat-number {
  font-size: 1.8rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-top: 4px;
}

/* --- Signup Section --- */
#signup {
  padding: 100px 0 120px;
  background: linear-gradient(180deg, transparent, rgba(168, 85, 247, 0.04));
}

.signup-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.signup-info h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.signup-info p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 28px;
}

.venue-link {
  color: var(--accent-1);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: var(--transition);
}

.venue-link:hover {
  color: var(--accent-2);
}

.event-details {
  margin-bottom: 24px;
}

.event-detail {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  line-height: 1.5;
}

.event-detail a {
  color: var(--accent-1);
}

.event-greeting {
  font-size: 1.1rem;
  color: var(--text);
  margin-top: 8px;
  line-height: 1.6;
}

.signup-form-card {
  padding: 36px;
  border-radius: var(--radius);
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
}

.form-field {
  margin-bottom: 18px;
}

.form-field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.signup-highlight {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 28px;
}

.form-field .optional {
  color: var(--text-dim);
  font-weight: 400;
}

.form-field input,
.form-field select {
  width: 100%;
  padding: 13px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-size: 1rem;
  outline: none;
  transition: var(--transition);
  appearance: none;
  -webkit-appearance: none;
}

.form-field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-field input:focus,
.form-field select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.15);
}

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

.field-error {
  display: block;
  font-size: 0.8rem;
  color: #f87171;
  margin-top: 4px;
  min-height: 18px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* Success State */
.form-success {
  text-align: center;
  padding: 40px 20px;
  animation: fadeScale 0.5s ease;
}

@keyframes fadeScale {
  from {
    opacity: 0;
    transform: scale(0.9);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

.success-icon {
  font-size: 4rem;
  margin-bottom: 16px;
}

.form-success h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.form-success p {
  color: var(--text-muted);
  font-size: 1rem;
}

/* --- Footer --- */
#footer {
  padding: 60px 0 30px;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-logo {
  font-size: 1.15rem;
  font-weight: 700;
  display: block;
  margin-bottom: 8px;
}

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

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links h4 {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-muted);
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-dim);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--text);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* --- Scroll Reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  transition-delay: var(--delay, 0s);
}

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

/* --- Responsive --- */
@media (max-width: 900px) {

  .desire-grid,
  .steps-grid,
  .proof-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
  }

  .signup-wrapper {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .signup-benefits {
    align-items: center;
  }

  .proof-stats {
    gap: 24px;
    flex-wrap: wrap;
  }

  .footer-content {
    flex-direction: column;
    gap: 30px;
  }
}

@media (max-width: 640px) {
  #hero h1 {
    font-size: 2.2rem;
  }

  .hero-sub {
    font-size: 1rem;
  }

  .countdown-timer {
    padding: 12px 16px;
    gap: 4px;
  }

  .countdown-number {
    font-size: 1.5rem;
  }

  .countdown-unit {
    min-width: 40px;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(20px);
    padding: 20px 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
  }

  .nav-links.open {
    display: flex;
  }

  #nav-toggle {
    display: flex;
  }

  .input-group {
    flex-direction: column;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .signup-form-card {
    padding: 24px;
  }
}