/* ========================================
   Prompt Pilot Guide - Glassmorphism Design
   Modern Product Review & Ranking Site
   ======================================== */

:root {
  /* Color Palette - Green Theme */
  --primary-gradient: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --secondary-gradient: linear-gradient(135deg, #34d399 0%, #10b981 100%);
  --accent-gradient: linear-gradient(135deg, #6ee7b7 0%, #34d399 100%);
  --success-gradient: linear-gradient(135deg, #10b981 0%, #059669 100%);

  /* Dark Glassmorphism */
  --glass-bg: rgba(0, 0, 0, 0.4);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
  --glass-blur: blur(12px);

  /* Darker glass variant */
  --glass-dark-bg: rgba(0, 0, 0, 0.6);
  --glass-dark-border: rgba(255, 255, 255, 0.08);

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-display: 'Outfit', var(--font-primary);

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: #fff;
  background: linear-gradient(135deg, #0a1f1a 0%, #0d2b26 50%, #064e3b 100%);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Animated Background */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 20% 50%, rgba(16, 185, 129, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(52, 211, 153, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 40% 20%, rgba(110, 231, 183, 0.12) 0%, transparent 50%);
  animation: backgroundMove 15s ease infinite;
  z-index: -1;
}

@keyframes backgroundMove {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.1); }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

p {
  margin-bottom: var(--spacing-sm);
  font-size: 1.05rem;
  line-height: 1.7;
}

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

/* Container */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Header & Navigation */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
  gap: var(--spacing-md);
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #fff 0%, #6ee7b7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
  align-items: center;
}

.nav-links a {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: var(--transition-base);
  font-weight: 500;
}

.nav-links a:hover {
  background: var(--glass-dark-bg);
  transform: translateY(-2px);
}

.nav-links a.active {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition-base);
}

/* Search Bar */
.search-container {
  position: relative;
  flex: 1;
  max-width: 500px;
}

.search-input {
  width: 100%;
  padding: var(--spacing-xs) var(--spacing-sm);
  padding-left: 2.5rem;
  background: var(--glass-dark-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: #fff;
  font-size: 0.95rem;
  transition: var(--transition-base);
}

.search-input:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
}

.search-input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.search-icon {
  position: absolute;
  left: var(--spacing-sm);
  top: 50%;
  transform: translateY(-50%);
  color: rgba(255, 255, 255, 0.6);
}

/* Hero Section */
.hero {
  text-align: center;
  padding: var(--spacing-2xl) 0;
  margin-bottom: var(--spacing-xl);
}

.hero h1 {
  margin-bottom: var(--spacing-md);
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero p {
  font-size: 1.25rem;
  opacity: 0.95;
  max-width: 700px;
  margin: 0 auto var(--spacing-lg);
}

.hero-cta {
  display: inline-flex;
  gap: var(--spacing-sm);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: var(--transition-base);
  text-align: center;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #fff;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.6);
}

.btn-secondary {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  color: #fff;
}

.btn-secondary:hover {
  background: var(--glass-dark-bg);
  transform: translateY(-2px);
}

/* Glass Cards */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  padding: var(--spacing-lg);
  transition: var(--transition-base);
}

.glass-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.45);
  border-color: rgba(255, 255, 255, 0.25);
}

/* Product Card */
.product-card {
  position: relative;
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.product-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  background: var(--glass-dark-bg);
}

.product-badge {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--success-gradient);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 700;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.product-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xs);
  font-weight: 700;
}

.product-category {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--glass-dark-bg);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-bottom: var(--spacing-sm);
  opacity: 0.9;
}

.product-description {
  flex: 1;
  font-size: 0.95rem;
  opacity: 0.9;
  margin-bottom: var(--spacing-md);
}

/* Star Rating */
.star-rating {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
}

.stars {
  display: flex;
  gap: 0.25rem;
  font-size: 1.2rem;
}

.star {
  color: #fbbf24;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.star.empty {
  color: rgba(255, 255, 255, 0.3);
}

.rating-score {
  font-weight: 700;
  font-size: 1.1rem;
  margin-left: 0.5rem;
}

/* Grid Layouts */
.grid {
  display: grid;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }

/* Section */
section {
  margin-bottom: var(--spacing-2xl);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.section-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.section-title::before {
  content: '';
  width: 4px;
  height: 2rem;
  background: var(--accent-gradient);
  border-radius: 2px;
}

/* Top 10 List */
.top-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.top-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  transition: var(--transition-base);
}

.top-item:hover {
  transform: translateX(10px);
  border-color: rgba(255, 255, 255, 0.3);
}

.rank-number {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  min-width: 60px;
  text-align: center;
}

.top-item-content {
  flex: 1;
}

.top-item-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.top-item-meta {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  font-size: 0.9rem;
  opacity: 0.8;
}

/* Category Pills */
.category-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
}

.category-pill {
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--glass-dark-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-base);
  font-weight: 500;
}

.category-pill:hover,
.category-pill.active {
  background: var(--primary-gradient);
  border-color: transparent;
  transform: translateY(-2px);
}

/* Breadcrumbs */
.breadcrumbs {
  display: flex;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-lg);
  font-size: 0.9rem;
  opacity: 0.8;
}

.breadcrumbs a:hover {
  opacity: 1;
  text-decoration: underline;
}

.breadcrumbs span {
  opacity: 0.5;
}

/* Review Detail Page */
.review-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.review-hero-image {
  width: 100%;
  max-width: 600px;
  height: 400px;
  object-fit: cover;
  border-radius: var(--radius-xl);
  margin: var(--spacing-lg) auto;
  display: block;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.review-content {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
  font-size: 1.1rem;
  line-height: 1.8;
}

.pros-cons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

.pros, .cons {
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
}

.pros {
  background: linear-gradient(135deg, rgba(67, 233, 123, 0.1) 0%, rgba(56, 249, 215, 0.1) 100%);
  border: 1px solid rgba(67, 233, 123, 0.3);
}

.cons {
  background: linear-gradient(135deg, rgba(245, 87, 108, 0.1) 0%, rgba(240, 147, 251, 0.1) 100%);
  border: 1px solid rgba(245, 87, 108, 0.3);
}

.pros h3, .cons h3 {
  margin-bottom: var(--spacing-md);
}

.pros ul, .cons ul {
  list-style: none;
  padding: 0;
}

.pros li, .cons li {
  padding: var(--spacing-xs) 0;
  padding-left: 1.5rem;
  position: relative;
}

.pros li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: #43e97b;
  font-weight: 700;
  font-size: 1.2rem;
}

.cons li::before {
  content: '✗';
  position: absolute;
  left: 0;
  color: #f5576c;
  font-weight: 700;
  font-size: 1.2rem;
}

/* Score Card */
.score-card {
  text-align: center;
  padding: var(--spacing-xl);
  background: var(--primary-gradient);
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 60px rgba(16, 185, 129, 0.4);
  margin: var(--spacing-xl) 0;
}

.score-number {
  font-size: 5rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: var(--spacing-sm);
}

.score-label {
  font-size: 1.25rem;
  opacity: 0.9;
}

/* Footer */
footer {
  margin-top: var(--spacing-2xl);
  padding: var(--spacing-xl) 0;
  background: var(--glass-dark-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-top: 1px solid var(--glass-border);
  text-align: center;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  text-align: left;
}

.footer-section h4 {
  margin-bottom: var(--spacing-sm);
}

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

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  opacity: 0.8;
  transition: var(--transition-base);
}

.footer-links a:hover {
  opacity: 1;
  padding-left: 0.5rem;
}

.footer-bottom {
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--glass-border);
  opacity: 0.7;
  font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 968px) {
  .nav-links {
    position: fixed;
    top: 70px;
    left: -100%;
    flex-direction: column;
    width: 100%;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--glass-border);
    transition: var(--transition-base);
  }

  .nav-links.active {
    left: 0;
  }

  .menu-toggle {
    display: flex;
  }

  .search-container {
    order: -1;
    max-width: 100%;
  }
}

@media (max-width: 640px) {
  :root {
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
  }

  .hero {
    padding: var(--spacing-xl) 0;
  }

  .hero-cta {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
  }

  .top-item {
    grid-template-columns: auto 1fr;
  }

  .rank-number {
    font-size: 2rem;
    min-width: 50px;
  }

  .review-hero-image {
    height: 250px;
  }

  .score-number {
    font-size: 3.5rem;
  }
}

/* Loading Animation */
@keyframes shimmer {
  0% { background-position: -1000px 0; }
  100% { background-position: 1000px 0; }
}

.loading {
  background: linear-gradient(90deg, var(--glass-bg) 0%, rgba(255, 255, 255, 0.2) 50%, var(--glass-bg) 100%);
  background-size: 1000px 100%;
  animation: shimmer 2s infinite;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.hidden { display: none; }
.flex { display: flex; }
.flex-center { display: flex; justify-content: center; align-items: center; }
.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.gap-3 { gap: var(--spacing-lg); }