/* ===================================================
   Irish Electricity Price Comparison - Light/Dark UI
   =================================================== */

/* ===== LIGHT MODE (Default) ===== */
:root {
  --bg-primary: #f0f2f5;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f8f9fb;
  --bg-glass: rgba(255, 255, 255, 0.92);

  --text-primary: #1a1a2e;
  --text-secondary: #4a5568;
  --text-muted: #718096;

  --accent-blue: #2563eb;
  --accent-green: #059669;
  --accent-amber: #d97706;
  --accent-red: #dc2626;
  --accent-purple: #7c3aed;
  --accent-cyan: #0891b2;

  --border: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(0, 0, 0, 0.15);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== DARK MODE ===== */
[data-theme="dark"] {
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: #1a1f35;
  --bg-card-hover: #222845;
  --bg-glass: rgba(26, 31, 53, 0.85);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-blue: #3b82f6;
  --accent-green: #10b981;
  --accent-amber: #f59e0b;
  --accent-red: #ef4444;
  --accent-purple: #8b5cf6;
  --accent-cyan: #06b6d4;

  --border: rgba(148, 163, 184, 0.1);
  --border-hover: rgba(148, 163, 184, 0.2);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}

[data-theme="dark"] body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(139, 92, 246, 0.06) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.app { position: relative; z-index: 1; }

/* ===== HEADER ===== */
.header {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 14px 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background var(--transition);
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo { display: flex; align-items: center; gap: 12px; }

.logo-icon {
  font-size: 28px;
  filter: drop-shadow(0 0 8px rgba(37, 99, 235, 0.3));
  animation: pulse 2s ease-in-out infinite;
}

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

.logo h1 {
  font-size: 20px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.tagline { font-size: 11px; color: var(--text-muted); font-weight: 400; }

.header-actions { display: flex; gap: 8px; align-items: center; }

/* ===== THEME TOGGLE ===== */
.theme-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 4px;
  cursor: pointer;
  transition: var(--transition);
}

.theme-toggle:hover { border-color: var(--border-hover); }

.theme-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  font-size: 16px;
  transition: var(--transition);
  color: var(--text-muted);
}

.theme-btn.active {
  background: var(--accent-blue);
  color: white;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: white;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35); }

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

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

.btn-icon { font-size: 15px; }

/* ===== LOADING ===== */
.loading-overlay {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
  transition: opacity var(--transition);
}

[data-theme="dark"] .loading-overlay { background: rgba(10, 14, 26, 0.9); }
.loading-overlay.hidden { opacity: 0; pointer-events: none; }
.loading-content { text-align: center; background: var(--bg-card); padding: 32px 40px; border-radius: var(--radius-lg); border: 1px solid var(--border); box-shadow: var(--shadow-lg); }

.spinner {
  width: 44px; height: 44px;
  border: 3px solid var(--border);
  border-top-color: var(--accent-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 14px;
}

@keyframes spin { to { transform: rotate(360deg); } }
.loading-content p { color: var(--text-secondary); font-size: 13px; margin-bottom: 10px; }

.progress-bar { width: 200px; height: 4px; background: var(--bg-primary); border-radius: 2px; overflow: hidden; margin: 0 auto; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple)); border-radius: 2px; width: 0%; transition: width 0.5s ease; }

/* ===== MAIN ===== */
.main { max-width: 1400px; margin: 0 auto; padding: 20px 24px; }
.section { margin-bottom: 28px; animation: fadeInUp 0.4s ease-out; }
.section.hidden { display: none; }

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.section-header { margin-bottom: 16px; }
.section-header h2 { font-size: 18px; font-weight: 700; letter-spacing: -0.3px; }
.section-desc { font-size: 12px; color: var(--text-muted); margin-top: 3px; }

/* ===== STATS GRID ===== */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 14px; }

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.stat-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--accent, var(--accent-blue));
}

.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.stat-label { font-size: 11px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 6px; }
.stat-value { font-size: 24px; font-weight: 800; color: var(--accent, var(--text-primary)); letter-spacing: -1px; line-height: 1.1; }
.stat-sub { font-size: 11px; color: var(--text-secondary); margin-top: 4px; }

/* ===== CURRENT PLAN ===== */
.current-plan-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent-amber);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .current-plan-card {
  background: linear-gradient(135deg, #1a1033 0%, #0f172a 100%);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-left: 4px solid var(--accent-amber);
}

.current-plan-header { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.current-plan-header h2 { font-size: 22px; font-weight: 700; }

.badge {
  display: inline-block; padding: 3px 9px; border-radius: 20px; font-size: 10px;
  font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px;
}

.badge-warning { background: rgba(217, 119, 6, 0.12); color: var(--accent-amber); border: 1px solid rgba(217, 119, 6, 0.25); }
.badge-best { background: rgba(5, 150, 105, 0.12); color: var(--accent-green); border: 1px solid rgba(5, 150, 105, 0.25); }

.current-plan-details { display: flex; flex-wrap: wrap; align-items: center; gap: 20px; }
.plan-rate { text-align: center; }
.rate-label { display: block; font-size: 10px; color: var(--text-muted); text-transform: uppercase; margin-bottom: 3px; }
.rate-value { font-size: 16px; font-weight: 700; color: var(--text-primary); }

.plan-cost { margin-left: auto; text-align: right; }
.cost-label { display: block; font-size: 10px; color: var(--text-muted); text-transform: uppercase; margin-bottom: 3px; }
.cost-value { font-size: 26px; font-weight: 800; color: var(--accent-amber); }

.plan-expiry {
  display: flex; align-items: center; gap: 6px;
  background: rgba(220, 38, 38, 0.08); border: 1px solid rgba(220, 38, 38, 0.15);
  border-radius: var(--radius-sm); padding: 6px 12px; font-size: 12px; color: var(--text-secondary);
}

/* ===== COMPARISON TABLE ===== */
.comparison-table-wrapper {
  overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--border);
  background: var(--bg-card); box-shadow: var(--shadow-sm);
}

.comparison-table { width: 100%; border-collapse: collapse; font-size: 13px; }

.comparison-table thead { background: var(--bg-primary); }

[data-theme="dark"] .comparison-table thead { background: rgba(59, 130, 246, 0.05); }

.comparison-table th {
  padding: 12px 14px; text-align: left; font-weight: 600; font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-muted);
  border-bottom: 2px solid var(--border); white-space: nowrap;
}

.comparison-table th small {
  display: block; font-weight: 400; color: var(--text-muted);
  text-transform: none; letter-spacing: 0; opacity: 0.7;
}

.comparison-table td {
  padding: 12px 14px; border-bottom: 1px solid var(--border); transition: var(--transition);
}

.comparison-table tr:hover td { background: rgba(37, 99, 235, 0.03); }
.comparison-table tr:last-child td { border-bottom: none; }
.col-rank { width: 44px; text-align: center !important; }
.col-rate, .col-standing, .col-total, .col-savings, .col-bonus { text-align: right !important; }

.rank-badge {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 50%; font-weight: 700; font-size: 13px;
}

.rank-1 { background: linear-gradient(135deg, #059669, #047857); color: white; box-shadow: 0 0 10px rgba(5, 150, 105, 0.35); }
.rank-2 { background: linear-gradient(135deg, #2563eb, #1d4ed8); color: white; }
.rank-3 { background: linear-gradient(135deg, #7c3aed, #6d28d9); color: white; }
.rank-other { background: var(--bg-primary); color: var(--text-muted); border: 1px solid var(--border); }

.provider-name { font-weight: 600; color: var(--text-primary); display: block; }
.plan-name { font-size: 11px; color: var(--text-muted); }

.current-marker {
  display: inline-block; background: rgba(217, 119, 6, 0.12); color: var(--accent-amber);
  font-size: 9px; padding: 2px 5px; border-radius: 4px; margin-left: 5px; font-weight: 700;
}

.total-cost { font-weight: 800; font-size: 15px; color: var(--text-primary); }
.savings-positive { color: var(--accent-green); font-weight: 700; }
.savings-negative { color: var(--accent-red); font-weight: 600; }
.savings-zero { color: var(--text-muted); }

.row-best { background: rgba(5, 150, 105, 0.04); border-left: 3px solid var(--accent-green); }
.row-current { background: rgba(217, 119, 6, 0.04); border-left: 3px solid var(--accent-amber); }

/* ===== BREAKDOWN GRID ===== */
.breakdown-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(310px, 1fr)); gap: 14px; }

.breakdown-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: 18px; transition: var(--transition); box-shadow: var(--shadow-sm);
}

.breakdown-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.breakdown-card h3 { font-size: 14px; font-weight: 600; margin-bottom: 3px; }
.breakdown-card .plan-subtitle { font-size: 11px; color: var(--text-muted); margin-bottom: 14px; }

.breakdown-row { display: flex; justify-content: space-between; padding: 5px 0; font-size: 12px; border-bottom: 1px solid var(--border); }
.breakdown-row:last-child { border-bottom: none; }
.breakdown-row .label { color: var(--text-secondary); }
.breakdown-row .value { color: var(--text-primary); font-weight: 500; }
.breakdown-row.total { border-top: 2px solid var(--border); margin-top: 6px; padding-top: 10px; }
.breakdown-row.total .label { color: var(--text-primary); font-weight: 700; }
.breakdown-row.total .value { font-size: 16px; font-weight: 800; color: var(--accent-green); }
.breakdown-row.bonus .label { color: var(--accent-green); }
.breakdown-row.bonus .value { color: var(--accent-green); font-weight: 600; }

/* ===== MONTHLY CHART ===== */
.chart-container {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 20px; box-shadow: var(--shadow-sm);
}

.chart-bars { display: flex; align-items: flex-end; gap: 6px; height: 200px; padding-top: 16px; }

.chart-bar-group {
  flex: 1; display: flex; flex-direction: column; align-items: center;
  gap: 6px; height: 100%; justify-content: flex-end;
}

.stacked-bar {
  width: 100%; max-width: 44px; display: flex; flex-direction: column;
  border-radius: 5px 5px 0 0; overflow: hidden; transition: var(--transition); cursor: pointer;
}

.stacked-bar:hover { filter: brightness(1.1); transform: scaleY(1.02); transform-origin: bottom; }

.bar-segment { width: 100%; transition: var(--transition); }
.bar-segment.peak { background: linear-gradient(180deg, var(--accent-red), #b91c1c); }
.bar-segment.day { background: linear-gradient(180deg, var(--accent-amber), #b45309); }
.bar-segment.night { background: linear-gradient(180deg, var(--accent-purple), #6d28d9); }

.chart-label { font-size: 10px; color: var(--text-muted); text-align: center; }
.chart-value { font-size: 9px; color: var(--text-secondary); font-weight: 600; }

.chart-legend { display: flex; justify-content: center; gap: 20px; margin-top: 14px; font-size: 11px; }
.legend-item { display: flex; align-items: center; gap: 5px; color: var(--text-secondary); }
.legend-dot { width: 9px; height: 9px; border-radius: 3px; }
.legend-dot.peak { background: var(--accent-red); }
.legend-dot.day { background: var(--accent-amber); }
.legend-dot.night { background: var(--accent-purple); }

/* ===== FOOTER ===== */
.footer {
  text-align: center; padding: 20px; font-size: 11px; color: var(--text-muted);
  border-top: 1px solid var(--border); margin-top: 32px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .header-content { flex-direction: column; gap: 10px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .current-plan-details { flex-direction: column; align-items: flex-start; }
  .plan-cost { margin-left: 0; text-align: left; }
  .breakdown-grid { grid-template-columns: 1fr; }
  .comparison-table { font-size: 11px; }
  .comparison-table th, .comparison-table td { padding: 8px 6px; }
}

/* Plan type badge */
.plan-type-badge {
  display: inline-block; font-size: 8px; padding: 1px 5px; border-radius: 3px;
  margin-left: 3px; vertical-align: middle; font-weight: 600;
}

.type-nightBoost { background: rgba(124, 58, 237, 0.12); color: var(--accent-purple); }
.type-evCharge { background: rgba(5, 150, 105, 0.12); color: var(--accent-green); }
.type-weekender, .type-weekenderSat, .type-weekenderSun { background: rgba(37, 99, 235, 0.12); color: var(--accent-blue); }
.type-flat24 { background: rgba(8, 145, 178, 0.12); color: var(--accent-cyan); }
.type-discountWeekend { background: rgba(217, 119, 6, 0.12); color: var(--accent-amber); }
.type-freeTimeSat, .type-freeTimeSun { background: rgba(220, 38, 38, 0.12); color: var(--accent-red); }
.type-standard { background: rgba(100, 116, 139, 0.12); color: var(--text-muted); }

.source-badge { display: inline-block; font-size: 8px; padding: 1px 4px; border-radius: 3px; margin-left: 3px; }
.source-scraped { background: rgba(5, 150, 105, 0.12); color: var(--accent-green); }
.source-fallback { background: rgba(217, 119, 6, 0.12); color: var(--accent-amber); }

/* Plan links */
.plan-link {
  color: var(--accent-blue);
  text-decoration: none;
  border-bottom: 1px dashed var(--accent-blue);
  transition: var(--transition);
}

.plan-link:hover {
  color: var(--accent-purple);
  border-bottom-color: var(--accent-purple);
  border-bottom-style: solid;
}

/* Intro Section */
.intro-section {
  padding: 1.5rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.intro-content {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
  border: 1px solid var(--border-color);
}

.intro-content h2 {
  margin: 0 0 1rem;
  font-size: 1.1rem;
  color: var(--text-primary);
}

.intro-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
}

.intro-item {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.intro-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.intro-item strong {
  display: block;
  font-size: 0.9rem;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.intro-item p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.4;
}

/* Evidence note in breakdown cards */
.evidence-note {
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: 4px 8px;
  background: rgba(37, 99, 235, 0.06);
  border-radius: 4px;
  margin-bottom: 0.5rem;
  cursor: help;
  border-left: 2px solid var(--accent-blue);
}

/* Day/Night plan type */
.type-dayNight { background: rgba(5, 150, 105, 0.12); color: var(--accent-green); }

/* Footer */
.footer {
  padding: 1.5rem 2rem;
  text-align: center;
  border-top: 1px solid var(--border-color);
  max-width: 1400px;
  margin: 2rem auto 0;
}

.footer-content p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0.3rem 0;
  line-height: 1.5;
}

.footer-content a {
  color: var(--accent-blue);
  text-decoration: none;
}

.footer-content a:hover {
  text-decoration: underline;
}

.footer-excluded {
  margin-top: 0.5rem !important;
  opacity: 0.7;
}

/* Mobile */
@media (max-width: 768px) {
  .header-content { flex-direction: column; gap: 0.75rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .intro-grid { grid-template-columns: 1fr; }
  .comparison-table-wrapper { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .breakdown-grid { grid-template-columns: 1fr; }
  .intro-section, .footer { padding: 1rem; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .header-content { padding: 0.75rem; }
}

/* Print styles */
@media print {
  .header, .intro-section, .theme-toggle { display: none; }
  .loading-overlay { display: none !important; }
  .section { break-inside: avoid; }
  body { background: white; }
}