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

:root {
  --bg-dark: #0a0e1a;
  --bg-card: #121829;
  --bg-card-hover: #1a2138;
  --border: rgba(255,255,255,0.06);
  --border-hover: rgba(255,255,255,0.12);
  --text: #e8ecf4;
  --text-muted: #7b8398;
  --text-dim: #4a5168;
  --accent: #00d4aa;
  --accent-dim: rgba(0,212,170,0.15);
  --petrol: #ff6b35;
  --diesel: #4ecdc4;
  --kerosene: #ffe66d;
  --lpg: #a8e6cf;
  --brent: #6c5ce7;
  --wti: #fd79a8;
  --danger: #ff4757;
  --success: #2ed573;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: 'JetBrains Mono', monospace;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg-dark);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ===== Animated Background ===== */
.bg-gradient {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  z-index: -2;
  background: linear-gradient(135deg, #0a0e1a 0%, #0d1525 40%, #0a0e1a 100%);
}

.bg-gradient::before {
  content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  background: radial-gradient(ellipse at 20% 0%, rgba(0,212,170,0.08) 0%, transparent 50%),
              radial-gradient(ellipse at 80% 100%, rgba(108,92,231,0.06) 0%, transparent 50%),
              radial-gradient(ellipse at 50% 50%, rgba(255,107,53,0.04) 0%, transparent 60%);
  animation: bgShift 20s ease-in-out infinite alternate;
}

@keyframes bgShift {
  0% { transform: scale(1) rotate(0deg); }
  100% { transform: scale(1.1) rotate(2deg); }
}

.bg-noise {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  z-index: -1; opacity: 0.015; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' /%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' /%3E%3C/svg%3E");
}

/* ===== Container ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

/* ===== Header ===== */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-icon {
  font-size: 2.5rem;
  filter: drop-shadow(0 0 10px rgba(0,212,170,0.3));
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

.header h1 {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #fff 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 2px;
}

.header-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
}

.live-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: rgba(46,213,115,0.1);
  border: 1px solid rgba(46,213,115,0.2);
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.live-dot {
  width: 8px; height: 8px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(46,213,115,0.4); }
  50% { opacity: 0.7; box-shadow: 0 0 0 6px rgba(46,213,115,0); }
}

.live-text { color: var(--success); }

.last-updated {
  color: var(--text-dim);
  font-size: 0.75rem;
  font-family: var(--mono);
}

/* ===== OGRA Update Banner ===== */
.ogra-banner {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 20px;
  margin-bottom: 16px;
  transition: border-color 0.3s;
}

.ogra-banner.increase { border-left: 3px solid var(--danger); }
.ogra-banner.decrease { border-left: 3px solid var(--success); }
.ogra-banner.no-change { border-left: 3px solid var(--text-dim); }

.ogra-banner-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
}

.ogra-banner-content {
  flex: 1;
}

.ogra-banner-title {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 2px;
}

.ogra-banner-detail {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
}

.ogra-banner-detail .up { color: var(--danger); font-weight: 700; }
.ogra-banner-detail .down { color: var(--success); font-weight: 700; }
.ogra-banner-detail .flat { color: var(--text-dim); }

.ogra-banner-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--mono);
  text-align: right;
  white-space: nowrap;
}

/* ===== Price Cards ===== */
.price-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px 20px;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.price-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 3px;
  background: var(--card-color, var(--accent));
  opacity: 0.6;
  transition: opacity 0.3s;
}

.price-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  background: var(--bg-card-hover);
}

.price-card:hover::before { opacity: 1; }

.price-card[data-product="petrol"] { --card-color: var(--petrol); }
.price-card[data-product="diesel"] { --card-color: var(--diesel); }
.price-card[data-product="kerosene"] { --card-color: var(--kerosene); }
.price-card[data-product="lpg"] { --card-color: var(--lpg); }
/* ===== Hi-Octane Section ===== */
.hi-octane-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 24px;
}

.hi-octane-header {
  margin-bottom: 16px;
}

.hi-octane-header h2 {
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.deregulated-badge {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-muted);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  padding: 3px 10px;
  border-radius: 20px;
}

.hi-octane-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.octane-company-card {
  background: var(--bg-card-hover);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  transition: all 0.3s;
}

.octane-company-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.octane-company-card::before {
  content: '';
  display: block;
  width: 40px;
  height: 4px;
  border-radius: 2px;
  margin-bottom: 12px;
}

.octane-company-card[data-company="pso"]::before { background: #00a651; }
.octane-company-card[data-company="apl"]::before { background: #bed62f; }
.octane-company-card[data-company="shell"]::before { background: #fb1; }

.octane-company-name {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.octane-price-main {
  font-size: 1.75rem;
  font-weight: 800;
  font-family: var(--mono);
  color: #e17055;
  letter-spacing: -0.02em;
}

.octane-price-unit {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 2px;
  margin-bottom: 12px;
}

.octane-price-tiers {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.octane-tier {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  padding: 6px 10px;
  background: rgba(255,255,255,0.03);
  border-radius: 6px;
}

.octane-tier-price {
  font-family: var(--mono);
  font-weight: 700;
  color: #e17055;
}

.octane-tier-info {
  color: var(--text-dim);
  font-size: 0.72rem;
}

.octane-effective {
  font-size: 0.7rem;
  color: var(--text-dim);
  margin-top: 10px;
  font-family: var(--mono);
}

.octane-loading {
  color: var(--text-dim);
  font-size: 0.9rem;
  text-align: center;
  padding: 20px;
}

.octane-note {
  font-size: 0.72rem;
  color: var(--text-dim);
  margin-top: 12px;
  line-height: 1.5;
  padding: 10px;
  background: rgba(255,255,255,0.02);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.card-icon {
  font-size: 1.8rem;
  margin-bottom: 8px;
}

.card-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 8px;
}

.card-value-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.card-value {
  font-size: 2rem;
  font-weight: 800;
  font-family: var(--mono);
  color: var(--card-color, var(--accent));
  letter-spacing: -0.02em;
  line-height: 1;
}

.card-arrow {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1;
  display: inline-block;
  transition: transform 0.3s;
}

.card-arrow.up { color: var(--danger); }
.card-arrow.down { color: var(--success); }
.card-arrow.flat { color: var(--text-dim); opacity: 0.4; }

.card-unit {
  font-size: 0.7rem;
  color: var(--text-dim);
  margin-top: 4px;
  margin-bottom: 10px;
}

.card-change {
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--mono);
}

.card-change.up { color: var(--danger); }
.card-change.down { color: var(--success); }
.card-change.flat { color: var(--text-dim); }

/* ===== PM vs PM Comparison ===== */
.pm-comparison {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
  margin-bottom: 24px;
}

.pm-section-title {
  font-size: 1.2rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.pm-versus {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 20px;
  align-items: start;
}

.pm-card {
  background: var(--bg-card-hover);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px 20px;
  text-align: center;
  transition: all 0.3s ease;
}

.pm-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
}

.pm-ik {
  border-top: 3px solid #1a5276;
}

.pm-ss {
  border-top: 3px solid #145a32;
}

.pm-caricature {
  width: 140px;
  height: auto;
  margin: 0 auto 12px;
  display: block;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.3));
}

.pm-name {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 2px;
}

.pm-tenure {
  font-size: 0.72rem;
  color: var(--text-dim);
  margin-bottom: 16px;
  font-family: var(--mono);
}

.pm-price-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.pm-price-value {
  font-size: 1.8rem;
  font-weight: 800;
  font-family: var(--mono);
  color: var(--petrol);
  line-height: 1;
}

.pm-price-value.small {
  font-size: 1.3rem;
}

.pm-price-unit {
  font-size: 0.7rem;
  color: var(--text-dim);
  margin-top: 2px;
}

.pm-vs {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-top: 60px;
  gap: 12px;
}

.pm-vs-circle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--petrol), var(--danger));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 900;
  color: white;
  letter-spacing: 0.02em;
  box-shadow: 0 4px 16px rgba(255,107,53,0.3);
  animation: pmVsPulse 2s ease-in-out infinite;
}

@keyframes pmVsPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.08); }
}

.pm-vs-change {
  font-size: 1.6rem;
  font-weight: 900;
  font-family: var(--mono);
  color: var(--danger);
  text-align: center;
  line-height: 1;
}

.pm-vs-label {
  font-size: 0.7rem;
  color: var(--text-dim);
  text-align: center;
  max-width: 100px;
  line-height: 1.3;
}

.pm-footnote {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-style: italic;
}

.pm-copyright {
  text-align: center;
  font-size: 0.68rem;
  color: var(--text-dim);
  margin-top: 10px;
  opacity: 0.7;
}

/* ===== Stats Bar ===== */
.stats-bar {
  display: flex;
  gap: 1px;
  background: var(--border);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 32px;
}

.stat-item {
  flex: 1;
  background: var(--bg-card);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-label {
  font-size: 0.7rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

.stat-value {
  font-size: 1.1rem;
  font-weight: 700;
  font-family: var(--mono);
}

/* ===== Chart Section ===== */
.chart-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 32px;
}

.chart-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0;
}

.tab-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 10px 20px;
  cursor: pointer;
  transition: all 0.2s;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}

.tab-btn:hover { color: var(--text); }

.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.tab-content { display: none; }
.tab-content.active { display: block; }

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.chart-header h2 {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.chart-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.range-buttons {
  display: flex;
  gap: 4px;
}

.range-btn {
  background: var(--bg-card-hover);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
}

.range-btn:hover {
  border-color: var(--border-hover);
  color: var(--text);
}

.range-btn.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

.chart-container {
  position: relative;
  height: 420px;
  width: 100%;
}

/* ===== Yearly Grid ===== */
.yearly-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.yearly-card {
  background: var(--bg-card-hover);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 16px;
  text-align: center;
  transition: all 0.3s;
}

.yearly-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.yearly-header {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.yearly-value {
  font-size: 1.5rem;
  font-weight: 800;
  font-family: var(--mono);
  margin-bottom: 4px;
}

.yearly-value.up { color: var(--danger); }
.yearly-value.down { color: var(--success); }

.yearly-detail {
  font-size: 0.7rem;
  color: var(--text-dim);
  margin-bottom: 12px;
  line-height: 1.4;
}

.yearly-bar {
  height: 4px;
  background: rgba(255,255,255,0.05);
  border-radius: 2px;
  overflow: hidden;
}

.yearly-bar-fill {
  height: 100%;
  width: 0%;
  border-radius: 2px;
  transition: width 0.8s ease;
}

.yearly-bar-fill.up { background: var(--danger); }
.yearly-bar-fill.down { background: var(--success); }

/* ===== Data Sources ===== */
.data-sources {
  margin-bottom: 32px;
}

.data-sources h3 {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sources-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.source-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  text-decoration: none;
  color: inherit;
  transition: all 0.2s;
}

.source-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

.source-name {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.source-desc {
  font-size: 0.75rem;
  color: var(--text-dim);
  line-height: 1.4;
}

/* ===== Footer ===== */
.footer {
  text-align: center;
  padding: 32px 0 0;
  border-top: 1px solid var(--border);
}

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

.footer a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
  transition: opacity 0.2s;
}

.footer a:hover { opacity: 0.8; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .price-cards { grid-template-columns: repeat(3, 1fr); }
  .sources-grid { grid-template-columns: repeat(2, 1fr); }
  .yearly-grid { grid-template-columns: repeat(3, 1fr); }
  .stats-bar { flex-direction: column; }
}

@media (max-width: 600px) {
  .header { flex-direction: column; align-items: flex-start; gap: 12px; }
  .header-right { align-items: flex-start; }
  .price-cards { grid-template-columns: 1fr 1fr; gap: 10px; }
  .price-card { padding: 16px 12px; }
  .card-value { font-size: 1.5rem; }
  .yearly-grid { grid-template-columns: 1fr 1fr; }
  .sources-grid { grid-template-columns: 1fr; }
  .chart-tabs { flex-wrap: wrap; }
  .tab-btn { padding: 8px 14px; font-size: 0.8rem; }
  .chart-header { flex-direction: column; align-items: flex-start; }
  .range-buttons { flex-wrap: wrap; }
  .chart-container { height: 320px; }
  .header h1 { font-size: 1.4rem; }
}