@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

/* --- Core Design Tokens --- */
:root {
  --bg-main: #040806;
  --bg-card: rgba(12, 24, 18, 0.45);
  --bg-card-hover: rgba(18, 38, 29, 0.65);
  --border-color: rgba(255, 255, 255, 0.06);
  --border-color-hover: rgba(16, 185, 129, 0.4);
  
  --text-primary: #f0fbf7;
  --text-secondary: #90a69e;
  --text-muted: #5d736b;
  
  /* Neon Accents (Remapped to Cyber Emerald & Mint) */
  --accent-purple: #10b981; /* Emerald */
  --accent-blue: #0d9488;   /* Teal */
  --accent-cyan: #34d399;   /* Mint */
  --accent-pink: #fbbf24;   /* Amber Gold */
  
  /* Status Colors */
  --status-excel-bg: rgba(52, 211, 153, 0.1);
  --status-excel-text: #34d399;
  --status-good-bg: rgba(13, 148, 136, 0.1);
  --status-good-text: #2dd4bf;
  --status-warn-bg: rgba(245, 158, 11, 0.1);
  --status-warn-text: #fbbf24;
  --status-error-bg: rgba(239, 68, 68, 0.1);
  --status-error-text: #f87171;
  
  --glow-purple: 0 0 20px rgba(16, 185, 129, 0.18);
  --glow-cyan: 0 0 20px rgba(52, 211, 153, 0.18);
  
  --font-heading: 'Outfit', 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(16, 185, 129, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(13, 148, 136, 0.05) 0%, transparent 40%);
  background-attachment: fixed;
}

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

/* --- Layout Grid --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

header {
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 7, 13, 0.7);
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4.5rem;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo i {
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.nav-links a:hover, .nav-links a.active {
  color: var(--text-primary);
  text-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
}

/* --- Hero Section --- */
.hero {
  padding: 6rem 0 4rem 0;
  text-align: center;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: #34d399;
  padding: 0.35rem 1rem;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  animation: pulse 2s infinite;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.hero h1 span.gradient-text {
  background: linear-gradient(135deg, var(--accent-purple) 20%, var(--accent-blue) 50%, var(--accent-cyan) 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  color: var(--text-secondary);
  font-size: 1.2rem;
  max-width: 650px;
  margin: 0 auto 2.5rem auto;
}

/* --- Glassmorphic Card --- */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  transition: var(--transition-smooth);
}

.glass-card:hover {
  border-color: var(--border-color-hover);
  background: var(--bg-card-hover);
  box-shadow: var(--glow-purple);
  transform: translateY(-2px);
}

/* --- Top Tiers (Highlights) --- */
.top-tiers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.tier-card {
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.tier-badge {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  padding: 0.25rem 0.75rem;
  border-radius: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tier-badge.best-overall {
  background: linear-gradient(135deg, rgba(251, 191, 36, 0.2), rgba(16, 185, 129, 0.2));
  border: 1px solid rgba(251, 191, 36, 0.4);
  color: #fcd34d;
}

.tier-badge.best-value {
  background: linear-gradient(135deg, rgba(13, 148, 136, 0.2), rgba(52, 211, 153, 0.2));
  border: 1px solid rgba(13, 148, 136, 0.4);
  color: #2dd4bf;
}

.tier-badge.best-speed {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(13, 148, 136, 0.2));
  border: 1px solid rgba(16, 185, 129, 0.4);
  color: #34d399;
}

.tier-card h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tier-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  min-height: 2.7rem;
}

.tier-stats {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
}

.stat-label {
  color: var(--text-muted);
}

.stat-value {
  font-weight: 600;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition-fast);
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
  color: white;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #059669, #0f766e);
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--text-secondary);
}

/* --- Interactive Section Layout --- */
.interactive-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: 5rem;
}

@media (min-width: 1024px) {
  .interactive-section {
    grid-template-columns: 2.2fr 1.2fr;
  }
}

/* --- Filter & Table Area --- */
.table-header-bar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
  .table-header-bar {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.search-input-wrapper {
  position: relative;
  flex: 1;
  max-width: 400px;
}

.search-input-wrapper i {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.search-input {
  width: 100%;
  padding: 0.65rem 1rem 0.65rem 2.5rem;
  border-radius: 0.5rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  outline: none;
  transition: var(--transition-fast);
}

.search-input:focus {
  border-color: var(--accent-purple);
  box-shadow: 0 0 10px rgba(139, 92, 246, 0.1);
}

.filter-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-tag {
  padding: 0.4rem 0.8rem;
  border-radius: 0.5rem;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.filter-tag:hover {
  background: rgba(255, 255, 255, 0.07);
}

.filter-tag.active {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(6, 182, 212, 0.15));
  border-color: var(--accent-purple);
  color: var(--text-primary);
}

/* --- Sleek Table --- */
.table-container {
  overflow-x: auto;
  border-radius: 1rem;
  border: 1px solid var(--border-color);
  background: rgba(10, 12, 22, 0.4);
}

table.relay-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

table.relay-table th {
  padding: 1rem 1.25rem;
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  background: rgba(15, 18, 36, 0.6);
}

table.relay-table td {
  padding: 1.25rem;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

table.relay-table tr:last-child td {
  border-bottom: none;
}

table.relay-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* --- Badges --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge.excellent { background: var(--status-excel-bg); color: var(--status-excel-text); }
.badge.good { background: var(--status-good-bg); color: var(--status-good-text); }
.badge.warning { background: var(--status-warn-bg); color: var(--status-warn-text); }
.badge.danger { background: var(--status-error-bg); color: var(--status-error-text); }

/* --- Calculator Panel --- */
.calculator-card {
  padding: 2rem;
  height: fit-content;
}

.calculator-card h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.calculator-card p.desc {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
}

.calc-group {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.calc-field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.calc-field label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.calc-input-row {
  display: flex;
  position: relative;
  align-items: center;
}

.calc-input {
  width: 100%;
  padding: 0.65rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  outline: none;
  transition: var(--transition-fast);
}

.calc-input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(6, 182, 212, 0.15);
}

.calc-unit {
  position: absolute;
  right: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  pointer-events: none;
}

.calc-select {
  appearance: none;
  width: 100%;
  padding: 0.65rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  outline: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: calc(100% - 1rem) center;
  background-size: 1rem;
  transition: var(--transition-fast);
}

.calc-select:focus {
  border-color: var(--accent-cyan);
}

.calc-results {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
}

.calc-result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  background: rgba(255, 255, 255, 0.015);
  border: 1px solid var(--border-color);
}

.calc-result-row.cheapest {
  border-color: rgba(16, 185, 129, 0.3);
  background: rgba(16, 185, 129, 0.05);
}

.calc-result-name {
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.calc-result-tag {
  font-size: 0.7rem;
  padding: 0.1rem 0.35rem;
  border-radius: 0.25rem;
  background: var(--status-excel-bg);
  color: var(--status-excel-text);
}

.calc-result-price {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.calc-result-price.cheapest-price {
  color: var(--status-excel-text);
}

/* --- Detailed Review & Article Styles --- */
.article-container {
  max-width: 800px;
  margin: 4rem auto;
  padding: 0 1.5rem;
}

.article-header {
  margin-bottom: 2.5rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.back-link:hover {
  color: var(--text-primary);
  transform: translateX(-4px);
}

.article-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.article-meta {
  display: flex;
  gap: 1.5rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.5rem;
}

.article-content {
  color: rgba(248, 250, 252, 0.9);
}

.article-content h2 {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  margin: 2.5rem 0 1rem 0;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.article-content h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  margin: 1.5rem 0 0.75rem 0;
}

.article-content p {
  margin-bottom: 1.5rem;
}

.article-content ul, .article-content ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.article-content li {
  margin-bottom: 0.5rem;
}

.review-metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.metric-card {
  padding: 1.25rem;
  text-align: center;
}

.metric-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.metric-value {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* --- Footer --- */
footer {
  border-top: 1px solid var(--border-color);
  padding: 3rem 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

footer p {
  margin-bottom: 1rem;
}

footer a {
  color: var(--text-secondary);
}

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

/* --- Keyframe Animations --- */
@keyframes pulse {
  0% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.03); opacity: 0.95; }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-6px); }
  100% { transform: translateY(0px); }
}