/* ── Variáveis (tema claro) ── */
:root {
  --primary: #1565c0;
  --primary-dark: #0d47a1;
  --primary-light: #e3f2fd;
  --surface: #ffffff;
  --background: #f0f4f8;
  --text: #1a1a2e;
  --text-secondary: #555770;
  --border: #e0e6ed;
  --shadow: 0 2px 8px rgba(0,0,0,0.10);
  --shadow-lg: 0 4px 20px rgba(0,0,0,0.12);
  --radius: 14px;
  --radius-sm: 8px;
  --green: #2e7d32;
  --green-bg: #e8f5e9;
  --amber: #e65100;
  --amber-bg: #fff3e0;
  --red: #c62828;
  --red-bg: #ffebee;
  --gold: #f59f00;
  --gold-bg: #fff9e6;
  --gold-border: #f0c040;
}

/* ── Tema escuro (manual ou sistema) ── */
[data-theme="dark"],
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --primary: #42a5f5;
    --primary-dark: #1e88e5;
    --primary-light: #0d1e2e;
    --surface: #1e1e2e;
    --background: #12121e;
    --text: #e2e2f0;
    --text-secondary: #8888a0;
    --border: #2e2e42;
    --shadow: 0 2px 8px rgba(0,0,0,0.4);
    --shadow-lg: 0 4px 20px rgba(0,0,0,0.55);
    --green: #66bb6a;
    --green-bg: #0e2010;
    --amber: #ffa726;
    --amber-bg: #1e1200;
    --red: #ef5350;
    --red-bg: #200a0a;
    --gold: #ffd54f;
    --gold-bg: #1e1600;
    --gold-border: #8a6800;
  }
}
[data-theme="dark"] {
  --primary: #42a5f5;
  --primary-dark: #1e88e5;
  --primary-light: #0d1e2e;
  --surface: #1e1e2e;
  --background: #12121e;
  --text: #e2e2f0;
  --text-secondary: #8888a0;
  --border: #2e2e42;
  --shadow: 0 2px 8px rgba(0,0,0,0.4);
  --shadow-lg: 0 4px 20px rgba(0,0,0,0.55);
  --green: #66bb6a;
  --green-bg: #0e2010;
  --amber: #ffa726;
  --amber-bg: #1e1200;
  --red: #ef5350;
  --red-bg: #200a0a;
  --gold: #ffd54f;
  --gold-bg: #1e1600;
  --gold-border: #8a6800;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--background);
  color: var(--text);
  min-height: 100dvh;
  padding-bottom: env(safe-area-inset-bottom);
  transition: background 0.2s, color 0.2s;
}

/* ── Header ── */
.header {
  background: var(--primary);
  color: white;
  padding: 16px;
  padding-top: calc(16px + env(safe-area-inset-top));
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.header-content {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.header-title {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-icon { font-size: 24px; line-height: 1; }

.header h1 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

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

.localizacao-badge {
  background: rgba(255,255,255,0.2);
  border: 1px solid rgba(255,255,255,0.4);
  color: white;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  white-space: nowrap;
  max-width: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.btn-header-icon {
  background: rgba(255,255,255,0.15);
  border: none;
  color: white;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
  flex-shrink: 0;
}

.btn-header-icon:hover { background: rgba(255,255,255,0.25); }

/* ── Update Banner ── */
.update-banner {
  background: #1b5e20;
  color: white;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 500;
  animation: slideDown 0.3s ease;
}

.update-banner span { flex: 1; }

@keyframes slideDown {
  from { transform: translateY(-100%); opacity: 0; }
  to   { transform: translateY(0);     opacity: 1; }
}

/* ── APK Banner ── */
.apk-banner {
  background: #1a237e;
  color: white;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 500;
}

.apk-banner span { flex: 1; }

.btn-apk {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: white;
  color: #1a237e;
  font-size: 12px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 20px;
  text-decoration: none;
  white-space: nowrap;
  transition: opacity 0.2s;
}

.btn-apk:active { opacity: 0.8; }

/* ── Main ── */
.main {
  max-width: 600px;
  margin: 0 auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ── Controls Card ── */
.controls-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ── Modo Toggle ── */
.modo-toggle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--background);
  border-radius: var(--radius-sm);
  padding: 3px;
  gap: 3px;
}

.modo-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 8px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.modo-btn.active {
  background: var(--surface);
  color: var(--primary);
  box-shadow: 0 1px 4px rgba(0,0,0,0.12);
}

.controls-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.controls-grid .control-group:first-child { grid-column: span 2; }

.controls-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 6px;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.control-group label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.control-group select {
  background: var(--background);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s;
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23555770' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  padding-right: 28px;
}

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

/* ── Comparar row ── */
.comparar-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.btn-text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
  text-align: left;
}

/* ── Button ── */
.btn-primary {
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  padding: 14px 20px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  transition: background 0.2s, transform 0.1s;
  letter-spacing: -0.2px;
}

.btn-primary:active {
  background: var(--primary-dark);
  transform: scale(0.98);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-primary svg { flex-shrink: 0; }

/* ── Tab Navigation ── */
.tab-nav {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 4px;
  gap: 4px;
  box-shadow: var(--shadow);
}

.tab-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 8px;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.tab-btn.active {
  background: var(--primary);
  color: white;
  box-shadow: 0 2px 8px rgba(21,101,192,0.3);
}

.tab-panel { display: flex; flex-direction: column; gap: 10px; }
.tab-panel.hidden { display: none; }

/* ── Estado ── */
.estado {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow);
  font-size: 14px;
  color: var(--text-secondary);
}

.estado.erro {
  background: var(--red-bg);
  color: var(--red);
  border: 1px solid var(--red);
}

.estado-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Resumo ── */
.resumo {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--primary-light);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--primary);
  font-weight: 500;
}

.preco-destaque {
  font-weight: 700;
  font-size: 14px;
}

/* ── Lista de Postos ── */
.lista-postos {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ── Card de Posto ── */
.posto-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-left: 4px solid transparent;
  transition: box-shadow 0.2s, transform 0.15s;
}

.posto-card.preco-barato { border-left-color: var(--green); }
.posto-card.preco-medio  { border-left-color: #f9a825; }
.posto-card.preco-caro   { border-left-color: var(--red); }

/* ── Card Destaque ── */
.posto-card.destaque {
  background: var(--gold-bg);
  border-left-color: var(--gold);
  box-shadow: 0 4px 16px rgba(245,159,0,0.2);
}

.destaque-header {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 700;
  color: #b45309;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: -2px;
}

.destaque-header svg { color: var(--gold); }

.posto-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.posto-info { flex: 1; min-width: 0; }

.posto-nome {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.posto-marca {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: 2px;
}

.posto-preco-wrapper { text-align: right; flex-shrink: 0; }

.posto-preco {
  font-size: 22px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.5px;
}

.posto-preco.preco-barato { color: var(--green); }
.posto-preco.preco-medio  { color: var(--amber); }
.posto-preco.preco-caro   { color: var(--red); }

.posto-unidade {
  font-size: 11px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ── Preço de comparação ── */
.preco-comparacao {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--background);
  padding: 3px 8px;
  border-radius: 20px;
  align-self: flex-start;
}

.preco-comparacao .comb-label { font-weight: 500; }

.posto-footer {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 20px;
  white-space: nowrap;
}

.badge-distancia {
  background: var(--primary-light);
  color: var(--primary);
}

.badge-update {
  background: var(--background);
  color: var(--text-secondary);
  font-weight: 500;
}

/* ── Botões de navegação ── */
.posto-nav {
  display: flex;
  gap: 8px;
  margin-top: 2px;
  flex-wrap: wrap;
}

.btn-nav {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
}

.btn-nav:active { transform: scale(0.96); opacity: 0.85; }

.btn-gmaps { background: var(--green-bg); color: var(--green); }
.btn-waze  { background: var(--primary-light); color: var(--primary); }

.posto-morada {
  font-size: 12px;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 4px;
  line-height: 1.4;
}

.posto-morada svg { flex-shrink: 0; margin-top: 1px; }

/* ── Ações do card ── */
.posto-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  padding-top: 2px;
  border-top: 1px solid var(--border);
}

.btn-card-action {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 10px;
  border: none;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--background);
  color: var(--text-secondary);
}

.btn-card-action:active { transform: scale(0.95); }

.btn-favorito.ativo {
  background: #fce4ec;
  color: #c62828;
}
[data-theme="dark"] .btn-favorito.ativo {
  background: #2e0a0a;
  color: #ef9a9a;
}

.btn-share { background: var(--background); color: var(--text-secondary); }

.btn-sino {
  margin-left: auto;
  background: var(--background);
  color: var(--text-secondary);
}

.btn-sino.ativo {
  background: #e3f2fd;
  color: var(--primary);
}
[data-theme="dark"] .btn-sino.ativo {
  background: var(--primary-light);
  color: var(--primary);
}

/* ── Histórico de preços ── */
.historico-section {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

.historico-titulo {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.sparkline-canvas {
  width: 100%;
  height: 50px;
  border-radius: 6px;
}

.historico-loading {
  font-size: 12px;
  color: var(--text-secondary);
  text-align: center;
  padding: 8px 0;
}

/* ── Mapa ── */
.mapa-container {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  height: calc(100dvh - 320px);
  min-height: 300px;
}

#mapa {
  height: 100%;
  width: 100%;
}

.mapa-marker {
  background: var(--primary);
  color: white;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 7px;
  border-radius: 12px;
  white-space: nowrap;
  border: 2px solid white;
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
  cursor: pointer;
}

.mapa-marker.destaque {
  background: #f59f00;
  color: #1a1000;
}

.mapa-marker.minha-pos {
  background: var(--primary);
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 3px solid white;
  padding: 0;
  box-shadow: 0 0 0 3px rgba(21,101,192,0.3);
}

/* ── Empty state ── */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-secondary);
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: 12px;
}

.empty-state h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.empty-state p { font-size: 14px; }

/* ── Utilitários ── */
.hidden { display: none !important; }

/* ── Standalone (TWA / PWA instalada): esconder banner APK ── */
@media (display-mode: standalone) {
  .apk-banner { display: none; }
}

/* ── Responsive ── */
@media (max-width: 360px) {
  .modo-btn { font-size: 12px; padding: 8px 6px; }
  .tab-btn  { font-size: 12px; padding: 8px 6px; }
}