/* Modern CSS Reset & Variable Design Tokens */
:root {
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Theme: Dark-mode by default (Warm Amber/Gold/Coffee Dog-friendly theme) */
  --bg-primary: #0f0d0b;
  --bg-secondary: #171412;
  --bg-card: rgba(28, 24, 20, 0.7);
  --border-color: rgba(245, 158, 11, 0.15);
  --border-focus: rgba(245, 158, 11, 0.5);
  
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;

  --primary: #f59e0b; /* Amber */
  --primary-hover: #d97706;
  --primary-glow: rgba(245, 158, 11, 0.35);
  
  --secondary: #d97706;
  --accent: #10b981; /* Green for checkmarks/results */
  
  --glass-bg: rgba(20, 17, 14, 0.75);
  --glass-border: rgba(255, 255, 255, 0.05);
  --shadow-main: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --border-radius: 16px;
}

/* Light Theme Variables */
[data-theme="light"] {
  --bg-primary: #fefdfb;
  --bg-secondary: #f7f5f0;
  --bg-card: rgba(255, 255, 255, 0.85);
  --border-color: rgba(217, 119, 6, 0.15);
  --border-focus: rgba(245, 158, 11, 0.6);
  
  --text-primary: #1c1917;
  --text-secondary: #4b5563;
  --text-muted: #9ca3af;
  
  --primary: #d97706; /* Rich Amber */
  --primary-hover: #b45309;
  --primary-glow: rgba(217, 119, 6, 0.25);
  
  --glass-bg: rgba(250, 248, 245, 0.85);
  --glass-border: rgba(0, 0, 0, 0.05);
  --shadow-main: 0 8px 32px 0 rgba(180, 83, 9, 0.1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

/* Utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
}

.text-center {
  text-align: center;
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary), #ef4444);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-main);
  transition: var(--transition);
}

.glass-card:hover {
  border-color: var(--border-focus);
}

.m-t-2 { margin-top: 2rem; }
.w-100 { width: 100%; }

/* Buttons */
.btn-primary, .btn-gradient, .btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 9999px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn-primary {
  background-color: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-gradient {
  background: linear-gradient(135deg, var(--primary), #ef4444);
  color: #fff;
  box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.btn-gradient:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(239, 68, 68, 0.4);
}

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

.btn-secondary:hover {
  background-color: var(--bg-secondary);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.btn-icon {
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: var(--transition);
}

.btn-icon:hover {
  background-color: var(--border-color);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 9999px;
  background-color: rgba(245, 158, 11, 0.1);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid rgba(245, 158, 11, 0.2);
  margin-bottom: 1.5rem;
}

.badge-accent {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--accent);
  border-color: rgba(16, 185, 129, 0.2);
}

/* Navigation Bar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(15, 13, 11, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

[data-theme="light"] .navbar {
  background: rgba(254, 253, 251, 0.7);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.4rem;
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--text-primary);
}

.logo-icon {
  color: var(--primary);
  width: 28px;
  height: 28px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-secondary);
  position: relative;
  padding: 4px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

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

/* Hero Section */
.hero-section {
  padding: 160px 0 100px 0;
  position: relative;
  overflow: hidden;
}

.hero-bg-glow {
  position: absolute;
  top: -10%;
  right: -5%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.15) 0%, transparent 70%);
  z-index: 0;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: 3.8rem;
  line-height: 1.15;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 3rem;
}

.hero-stats {
  display: flex;
  gap: 40px;
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-num {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Hero Image Wrapper */
.hero-visual {
  position: relative;
}

.image-wrapper {
  position: relative;
  border-radius: 24px;
  overflow: visible;
}

.hero-img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  border-radius: 24px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
  border: 1px solid rgba(255,255,255,0.05);
}

.image-glass-card {
  position: absolute;
  background: rgba(28, 24, 20, 0.8);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 16px;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
  z-index: 5;
}

[data-theme="light"] .image-glass-card {
  background: rgba(255, 255, 255, 0.85);
  border-color: rgba(0, 0, 0, 0.05);
}

.top-card {
  top: 40px;
  left: -30px;
}

.bottom-card {
  bottom: 40px;
  right: -20px;
}

.card-icon {
  color: #ef4444;
  width: 24px;
  height: 24px;
}

.pulse-dot {
  width: 12px;
  height: 12px;
  background-color: var(--accent);
  border-radius: 50%;
  animation: pulse-ring 1.5s infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.heartbeat {
  animation: beat 1s infinite alternate;
}

@keyframes beat {
  to { transform: scale(1.1); }
}

/* Sections General */
section {
  padding: 100px 0;
}

.section-header {
  margin-bottom: 50px;
}

.section-title {
  font-size: 2.8rem;
  margin-bottom: 1rem;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Breeds Section & Filters */
.filters-container {
  padding: 24px;
  margin-bottom: 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.search-box {
  position: relative;
  width: 100%;
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.search-box input {
  width: 100%;
  padding: 16px 16px 16px 48px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  background: rgba(15, 13, 11, 0.4);
  color: var(--text-primary);
  font-size: 1rem;
  transition: var(--transition);
}

[data-theme="light"] .search-box input {
  background: rgba(255, 255, 255, 0.5);
}

.search-box input:focus {
  border-color: var(--primary);
  outline: none;
  box-shadow: 0 0 10px var(--primary-glow);
}

.filter-groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.filter-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.filter-group select {
  padding: 12px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  outline: none;
  cursor: pointer;
  transition: var(--transition);
}

.filter-group select:focus {
  border-color: var(--primary);
}

/* Breeds Grid & Cards */
.breeds-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 30px;
}

.breed-card {
  overflow: hidden;
  border-radius: var(--border-radius);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.breed-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: 0 12px 30px rgba(0,0,0,0.5);
}

.breed-img-wrapper {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.breed-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.breed-card:hover .breed-img {
  transform: scale(1.05);
}

.breed-tag {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(15, 13, 11, 0.75);
  backdrop-filter: blur(4px);
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary);
  border: 1px solid var(--border-color);
}

.breed-info {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.breed-info h3 {
  font-size: 1.25rem;
  margin-bottom: 6px;
}

.breed-origin {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 12px;
}

.breed-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.breed-stats-mini {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 12px;
  margin-top: auto;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.breed-stat {
  display: flex;
  align-items: center;
  gap: 4px;
}

.breed-stat i {
  color: var(--primary);
  width: 14px;
  height: 14px;
}

/* Modal Styling */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.25s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-card {
  max-width: 700px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  animation: slideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideUp {
  from { transform: translateY(30px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.modal-close-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  background: rgba(0,0,0,0.5);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  z-index: 10;
}

.modal-close-btn:hover {
  background: var(--primary);
  color: white;
}

.modal-body {
  padding: 0;
}

.modal-hero-img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.modal-details {
  padding: 32px;
}

.modal-title-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
}

.modal-title-row h2 {
  font-size: 2rem;
}

.modal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 24px;
}

.detail-block h4 {
  font-size: 0.9rem;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 6px;
  letter-spacing: 0.05em;
}

.detail-block p {
  color: var(--text-secondary);
}

.stat-bars-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.stat-bar-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-bar-label {
  font-size: 0.85rem;
  display: flex;
  justify-content: space-between;
  color: var(--text-secondary);
}

.stat-bar-bg {
  width: 100%;
  height: 8px;
  background: rgba(255,255,255,0.08);
  border-radius: 99px;
  overflow: hidden;
}

.stat-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), #ef4444);
  border-radius: 99px;
  width: 0;
  transition: width 1s ease-out;
}

/* Quiz Section */
.quiz-section {
  position: relative;
}

.section-bg-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80%;
  height: 80%;
  background: radial-gradient(circle, rgba(239, 68, 68, 0.05) 0%, transparent 60%);
  z-index: 0;
  pointer-events: none;
}

.quiz-box {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px;
  position: relative;
  z-index: 1;
}

.quiz-header {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
}

.quiz-progress-bar {
  width: 100%;
  height: 6px;
  background: rgba(255,255,255,0.08);
  border-radius: 99px;
  overflow: hidden;
}

.quiz-progress {
  height: 100%;
  background: var(--primary);
  border-radius: 99px;
  transition: width 0.3s ease;
}

.quiz-step-indicator {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  align-self: flex-end;
}

.quiz-intro {
  text-align: center;
  padding: 40px 0;
}

.quiz-intro-icon {
  margin-bottom: 24px;
}

.quiz-intro-icon i {
  width: 64px;
  height: 64px;
  color: var(--primary);
}

.quiz-intro h2 {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}

.quiz-intro p {
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto 2rem auto;
}

.quiz-question-title {
  font-size: 1.8rem;
  margin-bottom: 24px;
}

.quiz-options {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 32px;
}

.quiz-option {
  padding: 20px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.02);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 16px;
}

.quiz-option:hover {
  border-color: var(--primary);
  background: rgba(245, 158, 11, 0.05);
}

.quiz-option.selected {
  border-color: var(--primary);
  background: rgba(245, 158, 11, 0.12);
  box-shadow: 0 0 15px rgba(245, 158, 11, 0.15);
}

.quiz-option-radio {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
}

.quiz-option.selected .quiz-option-radio {
  border-color: var(--primary);
  background: var(--primary);
}

.quiz-option-radio::after {
  content: '';
  width: 8px;
  height: 8px;
  background-color: white;
  border-radius: 50%;
  display: none;
}

.quiz-option.selected .quiz-option-radio::after {
  display: block;
}

.quiz-option-text {
  font-weight: 500;
  font-size: 1.05rem;
}

.quiz-nav {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
}

/* Quiz Results */
.quiz-results {
  text-align: center;
}

.results-header {
  margin-bottom: 32px;
}

.results-icon {
  width: 64px;
  height: 64px;
  color: var(--accent);
  margin-bottom: 16px;
}

.results-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 40px;
}

.result-breed-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 16px;
  background: rgba(255,255,255,0.03);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  text-align: left;
  transition: var(--transition);
  cursor: pointer;
}

.result-breed-card:hover {
  border-color: var(--primary);
  transform: translateX(5px);
}

.result-breed-img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: 8px;
}

.result-breed-info h4 {
  font-size: 1.15rem;
  margin-bottom: 4px;
}

.result-breed-info p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.match-percentage {
  margin-left: auto;
  font-weight: 700;
  color: var(--accent);
  font-size: 1.1rem;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.match-percentage span {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Whistle Section / Audio Lab */
.grid-two-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.whistle-controls {
  margin-top: 32px;
}

.control-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.control-label {
  font-weight: 600;
  color: var(--text-secondary);
}

.control-value {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--primary);
  font-size: 1.1rem;
}

.custom-slider {
  -webkit-appearance: none;
  width: 100%;
  height: 8px;
  border-radius: 99px;
  background: rgba(255,255,255,0.08);
  outline: none;
  margin-bottom: 8px;
}

.custom-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  box-shadow: 0 0 10px var(--primary-glow);
  transition: transform 0.1s ease;
}

.custom-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.freq-ticks {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.whistle-actions {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 16px;
  margin-top: 32px;
}

/* Canvas & Visualizer */
.canvas-wrapper {
  position: relative;
  width: 100%;
  height: 180px;
  background: rgba(0,0,0,0.3);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  margin-top: 16px;
  overflow: hidden;
}

#audio-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.canvas-fallback {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--text-muted);
  font-size: 0.85rem;
  text-align: center;
  pointer-events: none;
}

.soundboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
}

.sound-btn {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 16px;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: var(--transition);
}

.sound-btn:hover {
  border-color: var(--primary);
  background: rgba(245, 158, 11, 0.06);
}

.sound-btn.playing {
  border-color: var(--primary);
  background: rgba(245, 158, 11, 0.15);
  box-shadow: 0 0 15px rgba(245, 158, 11, 0.2);
  animation: pulse-border 1s infinite alternate;
}

@keyframes pulse-border {
  to { border-color: #ef4444; }
}

.sound-btn i {
  width: 24px;
  height: 24px;
  color: var(--primary);
}

.sound-btn span {
  font-size: 0.85rem;
  font-weight: 600;
}

.small-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Age Calculator Section */
.calc-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  padding: 40px;
}

.calc-info {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.calc-image-holder {
  margin-top: 24px;
  text-align: center;
}

.calc-illustration {
  width: 80%;
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-main);
}

.calc-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.custom-select {
  padding: 14px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.95rem;
  outline: none;
  cursor: pointer;
}

.number-input-wrapper {
  display: flex;
  align-items: center;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-secondary);
  max-width: 180px;
}

.number-input-wrapper input {
  width: 60px;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 700;
  text-align: center;
  outline: none;
}

/* Remove arrows for inputs */
.number-input-wrapper input::-webkit-outer-spin-button,
.number-input-wrapper input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.btn-num-adjust {
  width: 60px;
  height: 48px;
  background: rgba(255,255,255,0.02);
  border: none;
  color: var(--text-primary);
  font-size: 1.3rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-num-adjust:hover {
  background: rgba(255,255,255,0.08);
}

/* Calc Results Panel */
.calc-result {
  animation: fadeIn 0.3s ease-out;
}

.result-divider {
  height: 1px;
  background: var(--border-color);
  margin: 20px 0;
}

.result-main {
  display: flex;
  align-items: center;
  gap: 20px;
}

.result-number {
  font-family: var(--font-heading);
  font-size: 4rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.result-text h4 {
  font-size: 1.1rem;
  margin-bottom: 2px;
}

.result-text p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.result-tips {
  background: rgba(245, 158, 11, 0.05);
  border: 1px solid rgba(245, 158, 11, 0.15);
  padding: 16px;
  border-radius: 10px;
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.result-tips h5 {
  font-size: 0.9rem;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.result-tips p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Newsletter Section */
.newsletter-section {
  position: relative;
}

.newsletter-box {
  max-width: 700px;
  margin: 0 auto;
  padding: 50px 30px;
}

.newsletter-icon {
  margin-bottom: 16px;
}

.newsletter-icon i {
  width: 48px;
  height: 48px;
  color: var(--primary);
}

.newsletter-form {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.custom-input {
  flex-grow: 1;
  padding: 14px 20px;
  border-radius: 9999px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}

.custom-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 10px var(--primary-glow);
}

.form-feedback {
  margin-top: 16px;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.95rem;
}

/* Footer styling */
.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 80px 0 30px 0;
  color: var(--text-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand p {
  margin-top: 16px;
  font-size: 0.9rem;
  max-width: 250px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links h4 {
  font-size: 1rem;
  text-transform: uppercase;
  color: var(--text-primary);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.footer-links a:hover {
  color: var(--primary);
  transform: translateX(3px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 30px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Responsive Styles */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  
  .hero-title {
    font-size: 3rem;
  }
  
  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .hero-stats {
    justify-content: center;
  }
  
  .hero-visual {
    max-width: 500px;
    margin: 0 auto;
  }

  .grid-two-cols {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 768px) {
  .nav-menu {
    display: none; /* Mobile menu logic omitted for clean responsive CSS fallback, or handled in JS */
  }

  .nav-menu.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
  }

  .mobile-menu-btn {
    display: block;
  }

  .section-title {
    font-size: 2.2rem;
  }

  .modal-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .top-card {
    left: 10px;
  }
  
  .bottom-card {
    right: 10px;
  }

  .newsletter-form {
    flex-direction: column;
    border-radius: 0;
  }

  .custom-input {
    border-radius: 9999px;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}