/* ==========================================================================
   Harmonia Studio - Private Music Educator Design System
   ========================================================================== */

:root {
  /* Color Tokens */
  --bg-dark: #080911;
  --bg-card: rgba(19, 23, 42, 0.7);
  --bg-card-hover: rgba(30, 36, 64, 0.85);
  --bg-modal: #0d1124;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(245, 158, 11, 0.3);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-gold: #f59e0b;
  --accent-gold-hover: #d97706;
  --accent-gold-glow: rgba(245, 158, 11, 0.25);

  --accent-violet: #8b5cf6;
  --accent-violet-light: #a78bfa;
  --accent-violet-glow: rgba(139, 92, 246, 0.25);

  --accent-emerald: #10b981;
  --accent-cyan: #06b6d4;

  /* Typography */
  --font-serif: 'Cinzel', 'Playfair Display', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Shadows & Radius */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  --shadow-glow: 0 10px 30px -10px rgba(139, 92, 246, 0.3);
  --shadow-gold: 0 10px 30px -10px rgba(245, 158, 11, 0.3);
  --shadow-card: 0 20px 40px -15px rgba(0, 0, 0, 0.5);

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(139, 92, 246, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 85% 75%, rgba(245, 158, 11, 0.08) 0%, transparent 45%);
  background-attachment: fixed;
}

/* Typography Utilities */
h1, h2, h3, h4, h5 {
  color: var(--text-primary);
  line-height: 1.25;
  font-weight: 700;
}

.font-serif {
  font-family: var(--font-serif);
}

.text-gradient-gold {
  background: linear-gradient(135deg, #fef3c7 0%, #f59e0b 50%, #d97706 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-violet {
  background: linear-gradient(135deg, #ddd6fe 0%, #a78bfa 50%, #8b5cf6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.container {
  width: 90%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Buttons & Badges */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.8rem;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition-normal);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-gold) 0%, #d97706 100%);
  color: #000;
  box-shadow: var(--shadow-gold);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 35px -5px rgba(245, 158, 11, 0.5);
  background: linear-gradient(135deg, #fbbf24 0%, var(--accent-gold) 100%);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-outline-gold {
  background: transparent;
  color: var(--accent-gold);
  border: 1px solid var(--accent-gold);
}

.btn-outline-gold:hover {
  background: rgba(245, 158, 11, 0.12);
  transform: translateY(-2px);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.9rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: rgba(139, 92, 246, 0.12);
  color: var(--accent-violet-light);
  border: 1px solid rgba(139, 92, 246, 0.25);
}

.badge-gold {
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-gold);
  border-color: rgba(245, 158, 11, 0.3);
}

/* Glassmorphism Card */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.04), transparent);
  transition: 0.6s;
}

.glass-card:hover::before {
  left: 100%;
}

.glass-card:hover {
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow: var(--shadow-card);
  transform: translateY(-4px);
}

/* Header & Navigation */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 9, 17, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 1.1rem 0;
  transition: var(--transition-fast);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-violet) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition-fast);
  cursor: pointer;
}

.nav-link:hover, .nav-link.active {
  color: var(--accent-gold);
}

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  padding: 5rem 0 4rem;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 3.4rem;
  letter-spacing: -0.02em;
  margin: 1.2rem 0 1rem;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 600px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.stat-item {
  text-align: left;
}

.stat-num {
  font-size: 1.8rem;
  font-weight: 800;
  font-family: var(--font-serif);
  color: var(--accent-gold);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.hero-media-wrapper {
  position: relative;
}

.hero-img-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-highlight);
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.7);
  position: relative;
}

.hero-img-card img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

.hero-img-card:hover img {
  transform: scale(1.03);
}

.hero-floating-badge {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: rgba(13, 17, 36, 0.95);
  border: 1px solid var(--border-highlight);
  padding: 1.2rem;
  border-radius: var(--radius-md);
  backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow-card);
}

.play-note-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent-gold);
  color: #000;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.play-note-btn:hover {
  transform: scale(1.1);
}

/* Services Grid (Home) */
.section {
  padding: 5rem 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3.5rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  margin: 0.8rem 0 1rem;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 1.8rem;
}

.service-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.service-card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  margin-bottom: 1.2rem;
}

.service-card-title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
}

.service-card-desc {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.service-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.service-price-tag {
  font-weight: 700;
  color: var(--accent-gold);
}

/* Service Detail View */
.service-detail-view {
  padding: 3rem 0 6rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--accent-gold);
  text-decoration: none;
  font-weight: 600;
  margin-bottom: 2rem;
  cursor: pointer;
}

.service-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  margin-bottom: 4rem;
}

.service-hero-img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-highlight);
  box-shadow: var(--shadow-card);
}

.highlights-list {
  list-style: none;
  margin: 1.5rem 0;
}

.highlights-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
  color: var(--text-secondary);
  font-size: 0.98rem;
}

.highlights-list svg {
  color: var(--accent-gold);
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.program-steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.step-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: var(--radius-md);
}

.step-number {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-violet-light);
  margin-bottom: 0.5rem;
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

/* Pricing Grid */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.pricing-card.featured {
  border-color: var(--accent-gold);
  background: linear-gradient(180deg, rgba(245, 158, 11, 0.1) 0%, rgba(19, 23, 42, 0.8) 100%);
  transform: scale(1.03);
}

.pricing-price {
  font-size: 2.4rem;
  font-weight: 800;
  font-family: var(--font-serif);
  color: var(--accent-gold);
  margin: 1rem 0;
}

/* Testimonials */
.testimonials-filter {
  display: flex;
  justify-content: center;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.filter-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.5rem 1.2rem;
  border-radius: 9999px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.filter-btn.active, .filter-btn:hover {
  background: var(--accent-gold);
  color: #000;
  border-color: var(--accent-gold);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.8rem;
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-violet) 0%, var(--accent-cyan) 100%);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.95rem;
}

.testimonial-stars {
  color: #fbbf24;
  margin-bottom: 1rem;
}

/* FAQ Accordion */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  padding: 1.3rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.05rem;
}

.faq-answer {
  padding: 0 1.5rem 1.3rem;
  color: var(--text-secondary);
  display: none;
  font-size: 0.95rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 1rem;
}

.faq-item.active .faq-answer {
  display: block;
}

/* Interactive Booking Modal */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(4, 5, 12, 0.85);
  backdrop-filter: blur(12px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  padding: 1rem;
}

.modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: var(--bg-modal);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 650px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2.2rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.9);
  position: relative;
}

.modal-close {
  position: absolute;
  top: 1.2rem;
  right: 1.2rem;
  background: rgba(255, 255, 255, 0.08);
  border: none;
  color: var(--text-primary);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.2);
}

.booking-steps-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 1.8rem 0;
  position: relative;
}

.step-indicator {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  z-index: 2;
}

.step-indicator.active {
  background: var(--accent-gold);
  color: #000;
  border-color: var(--accent-gold);
}

.step-indicator.completed {
  background: var(--accent-emerald);
  color: #fff;
  border-color: var(--accent-emerald);
}

.form-group {
  margin-bottom: 1.4rem;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.85rem 1.1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: #fff;
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--accent-gold);
  background: rgba(255, 255, 255, 0.08);
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.8rem;
}

.option-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 1rem;
  cursor: pointer;
  transition: var(--transition-fast);
  text-align: center;
}

.option-card:hover, .option-card.selected {
  border-color: var(--accent-gold);
  background: rgba(245, 158, 11, 0.12);
}

.slots-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.6rem;
  margin-top: 0.8rem;
}

.slot-btn {
  padding: 0.6rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: #fff;
  cursor: pointer;
  font-size: 0.85rem;
  transition: var(--transition-fast);
}

.slot-btn:hover, .slot-btn.selected {
  background: var(--accent-gold);
  color: #000;
  border-color: var(--accent-gold);
  font-weight: 700;
}

/* Footer */
.footer {
  background: #04050b;
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem;
  margin-top: 4rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-col-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  margin-bottom: 1.2rem;
  color: var(--text-primary);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.6rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

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

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Responsive Styles */
@media (max-width: 992px) {
  .hero-grid, .service-hero-grid, .map-grid-wrap {
    grid-template-columns: 1fr !important;
  }

  .hero-title {
    font-size: 2.6rem;
  }

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

@media (max-width: 868px) {
  .nav-cta-wrap {
    display: none !important;
  }

  .mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-fast);
  }

  .mobile-menu-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--accent-gold);
    border-color: var(--accent-gold);
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(13, 17, 36, 0.97);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border-highlight);
    padding: 1.2rem 1.5rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.8rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
  }

  .nav-links.active {
    display: flex;
    animation: fadeInDown 0.25s ease-out forwards;
  }

  .nav-link {
    font-size: 1.05rem;
    padding: 0.5rem 0;
    width: 100%;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.2rem;
  }

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

  .slots-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 576px) {
  .btn {
    padding: 0.8rem 1.2rem;
    font-size: 0.92rem;
    white-space: normal;
    text-align: center;
    max-width: 100%;
  }

  .detail-cta-box {
    padding: 1.8rem 1rem !important;
  }
}