/* ==========================================================================
   Global Theme Tokens & Reset
   ========================================================================== */
:root {
  --bg-dark: #090714;
  --bg-card: rgba(22, 17, 38, 0.65);
  --bg-card-hover: rgba(35, 27, 60, 0.85);
  --primary-rose: #E63946;
  --primary-rose-hover: #ff4d5d;
  --gold-accent: #D4AF37;
  --gold-glow: rgba(212, 175, 55, 0.4);
  --text-main: #F8F9FA;
  --text-muted: #C4C3D0;
  --border-glass: rgba(255, 255, 255, 0.12);
  --font-serif: 'Cinzel', serif;
  --font-sans: 'Plus Jakarta Sans', sans-serif;
  --font-script: 'Alex Brush', cursive;
  --radius-lg: 20px;
  --radius-md: 12px;
  --shadow-glow: 0 10px 30px rgba(230, 57, 70, 0.25);
  --transition: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: var(--text-main);
  overflow-x: hidden;
}

body {
  min-height: 100vh;
  position: relative;
  line-height: 1.6;
}

/* Background Canvas */
#petalCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

/* Common Container & Glassmorphism */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

.glass-panel {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
}

.highlight-text {
  background: linear-gradient(135deg, #FF758C, #FF7EB3, var(--gold-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Sound Controller */
.sound-control-container {
  position: fixed;
  bottom: 25px;
  right: 25px;
  z-index: 999;
}

.sound-btn {
  background: rgba(22, 17, 38, 0.85);
  backdrop-filter: blur(10px);
  border: 1px solid var(--gold-accent);
  color: var(--gold-accent);
  padding: 12px 20px;
  border-radius: 30px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: 0 6px 20px rgba(0,0,0,0.5);
  transition: var(--transition);
}

.sound-btn:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 8px 25px var(--gold-glow);
  background: var(--primary-rose);
  color: #fff;
  border-color: var(--primary-rose);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 50px;
  background: rgba(9, 7, 20, 0.6);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--gold-accent);
  text-shadow: 0 0 10px var(--gold-glow);
}

.nav-links {
  display: flex;
  gap: 30px;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--primary-rose);
  text-shadow: 0 0 8px rgba(230, 57, 70, 0.5);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 140px 20px 80px;
}

.hero-content {
  max-width: 850px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.subtitle-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(230, 57, 70, 0.15);
  border: 1px solid rgba(230, 57, 70, 0.4);
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #FF758C;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 25px;
}

.icon-pulse {
  animation: pulse 1.5s infinite;
  color: var(--primary-rose);
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.25); }
  100% { transform: scale(1); }
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 6vw, 4.8rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  color: var(--text-muted);
  min-height: 3rem;
  margin-bottom: 35px;
  max-width: 700px;
}

.hero-banner-image {
  position: relative;
  width: 100%;
  max-width: 700px;
  height: 360px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 40px;
  border: 1px solid var(--border-glass);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.hero-banner-image:hover .hero-img {
  transform: scale(1.05);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(9, 7, 20, 0.85) 100%);
}

.hero-actions {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

/* Buttons */
.btn {
  padding: 14px 32px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition);
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-rose), #C1121F);
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-rose-hover), #E63946);
  transform: translateY(-3px);
  box-shadow: 0 15px 35px rgba(230, 57, 70, 0.45);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.18);
  transform: translateY(-3px);
  color: var(--gold-accent);
  border-color: var(--gold-accent);
}

.btn-small {
  padding: 8px 16px;
  font-size: 0.85rem;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
}

.btn-small:hover {
  background: var(--gold-accent);
  color: #000;
}

/* ==========================================================================
   Section Headers
   ========================================================================== */
.section {
  position: relative;
  z-index: 2;
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 50px;
}

.section-tag {
  font-family: var(--font-script);
  font-size: 2.2rem;
  color: var(--gold-accent);
  display: block;
  margin-bottom: -5px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  margin-bottom: 15px;
}

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

/* Filter Tabs */
.filter-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 45px;
}

.filter-btn {
  padding: 10px 22px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-muted);
  border-radius: 25px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.filter-btn.active, .filter-btn:hover {
  background: var(--primary-rose);
  color: #fff;
  border-color: var(--primary-rose);
  box-shadow: 0 5px 15px rgba(230, 57, 70, 0.3);
}

/* ==========================================================================
   Poem Cards Grid
   ========================================================================== */
.poem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.poem-card {
  padding: 35px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.poem-card:hover {
  transform: translateY(-8px);
  border-color: rgba(230, 57, 70, 0.5);
  box-shadow: 0 20px 40px rgba(230, 57, 70, 0.15);
}

.poem-card-tag {
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 4px 10px;
  border-radius: 12px;
  background: rgba(212, 175, 55, 0.15);
  color: var(--gold-accent);
  border: 1px solid rgba(212, 175, 55, 0.3);
}

.poem-card-title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: #fff;
  margin-bottom: 20px;
}

.poem-card-body {
  font-size: 1rem;
  color: var(--text-muted);
  white-space: pre-line;
  line-height: 1.8;
  font-style: italic;
  margin-bottom: 25px;
}

.poem-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 15px;
}

.poem-date {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
}

.copy-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1rem;
  transition: var(--transition);
}

.copy-btn:hover {
  color: var(--gold-accent);
  transform: scale(1.15);
}

/* ==========================================================================
   Generator Section
   ========================================================================== */
.generator-card {
  padding: 50px;
  max-width: 800px;
  margin: 0 auto;
}

.generator-header {
  text-align: center;
  margin-bottom: 35px;
}

.generator-icon {
  font-size: 2.5rem;
  color: var(--gold-accent);
  margin-bottom: 15px;
}

.generator-header h2 {
  font-family: var(--font-serif);
  font-size: 2rem;
  margin-bottom: 10px;
}

.generator-controls {
  display: flex;
  gap: 20px;
  align-items: flex-end;
  justify-content: center;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: left;
}

.control-group label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
}

.custom-select {
  padding: 12px 20px;
  background: rgba(9, 7, 20, 0.8);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  border-radius: 12px;
  font-size: 0.95rem;
  font-family: var(--font-sans);
  outline: none;
  cursor: pointer;
}

.custom-select:focus {
  border-color: var(--gold-accent);
}

.generated-output-box {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.poem-paper {
  position: relative;
  width: 100%;
  background: radial-gradient(circle at center, rgba(30, 22, 50, 0.9), rgba(15, 10, 28, 0.95));
  border: 1px dashed var(--gold-accent);
  padding: 40px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  box-shadow: inset 0 0 30px rgba(0,0,0,0.5);
  text-align: center;
}

.paper-watermark {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-script);
  font-size: 8rem;
  color: rgba(255, 255, 255, 0.02);
  pointer-events: none;
  user-select: none;
}

.generated-stanza {
  font-size: 1.2rem;
  line-height: 2;
  font-style: italic;
  color: #FFF0F5;
  white-space: pre-line;
}

.poem-author {
  margin-top: 20px;
  font-size: 0.9rem;
  color: var(--gold-accent);
  font-family: var(--font-serif);
}

/* ==========================================================================
   Reasons Flip Cards Grid
   ========================================================================== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
}

.flip-card {
  background-color: transparent;
  height: 220px;
  perspective: 1000px;
  cursor: pointer;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.7s cubic-bezier(0.4, 0.2, 0.2, 1);
  transform-style: preserve-3d;
}

.flip-card:hover .flip-card-inner,
.flip-card.flipped .flip-card-inner {
  transform: rotateY(180deg);
}

.flip-card-front, .flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 25px;
  border-radius: var(--radius-lg);
}

.flip-card-front {
  background: var(--bg-card);
}

.card-icon {
  font-size: 2.2rem;
  color: var(--primary-rose);
  margin-bottom: 15px;
}

.flip-card-front h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
}

.tap-hint {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.4);
  margin-top: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.flip-card-back {
  background: linear-gradient(135deg, rgba(230, 57, 70, 0.3), rgba(30, 20, 50, 0.95));
  transform: rotateY(180deg);
  border: 1px solid var(--primary-rose);
}

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

/* ==========================================================================
   Secret Garden Section
   ========================================================================== */
.garden-container {
  padding: 40px;
  text-align: center;
}

.roses-row {
  display: flex;
  justify-content: center;
  gap: 25px;
  flex-wrap: wrap;
  margin-bottom: 35px;
}

.rose-item {
  width: 70px;
  height: 70px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.rose-item:hover, .rose-item.picked {
  transform: scale(1.2) rotate(15deg);
  background: var(--primary-rose);
  border-color: var(--gold-accent);
  box-shadow: 0 0 25px rgba(230, 57, 70, 0.6);
}

.revealed-message-box {
  min-height: 100px;
  background: rgba(9, 7, 20, 0.7);
  border: 1px solid var(--gold-accent);
  border-radius: var(--radius-md);
  padding: 25px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 0 20px rgba(0,0,0,0.6);
}

.message-content {
  font-size: 1.1rem;
  color: var(--gold-accent);
  font-style: italic;
}

/* ==========================================================================
   Footer & Toast
   ========================================================================== */
.site-footer {
  position: relative;
  z-index: 2;
  padding: 40px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
}

.footer-love {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.footer-tech {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-tech span {
  color: var(--gold-accent);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gold-accent);
  color: #000;
  padding: 12px 28px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 0.9rem;
  z-index: 1000;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  opacity: 1;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.toast.hidden {
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 20px);
}

/* Responsive Breakpoints */
@media (max-width: 768px) {
  .site-header {
    padding: 15px 20px;
  }

  .nav-links {
    display: none; /* Mobile menu can be simplified */
  }

  .hero-section {
    padding-top: 110px;
  }

  .generator-card {
    padding: 25px;
  }

  .generator-controls {
    flex-direction: column;
    align-items: stretch;
  }
}