:root {
  --color-bg: #0f172a;
  --color-bg-card: #1e293b;
  --color-bg-hover: #334155;
  --color-text: #f1f5f9;
  --color-text-muted: #94a3b8;
  --color-border: #334155;
  --color-accent: #e10600;
  --color-accent-hover: #ff1a1a;
  --color-gold: #fbbf24;
  --color-silver: #9ca3af;
  --color-bronze: #b45309;
  
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  --bp-sm: 640px;
  --bp-md: 768px;
  --bp-lg: 1024px;
  --bp-xl: 1280px;
}

/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
}

/* Container */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0 2rem 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 2rem;
}

.header h1 {
  font-size: 1.75rem;
  font-weight: 700;
}

.header-controls {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.header-controls-secondary {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.year-selector {
  padding: 0.5rem 1rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  border-radius: 0.5rem;
  cursor: pointer;
  font-family: var(--font-sans);
}

.refresh-btn {
  background: var(--color-accent);
  border: none;
  color: white;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.125rem;
  transition: background 0.2s;
}

.refresh-btn:hover {
  background: var(--color-accent-hover);
}

/* Main content layout */
.main-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Layout for primary and secondary sections */
.primary-secondary-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.secondary-grid-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

/* Responsive layout for desktop */
@media (min-width: 1024px) {
  .primary-secondary-layout {
    grid-template-columns: 2fr 1fr;
  }
  
  .secondary-grid-top {
    grid-template-columns: 1fr;
  }
}

/* Responsive layout for tablets */
@media (min-width: 768px) {
  .secondary-grid-top {
    grid-template-columns: 1fr;
  }
}

/* Slots and Cards */
.slot {
  background: var(--color-bg-card);
  border-radius: 1rem;
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  min-width: 0;
}

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  padding: 1.25rem;
  min-width: 0;
}

.next-race-slot {
  display: flex;
  flex-direction: column;
}

/* Secondary grid for standings cards */
.secondary-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 768px) {
  .secondary-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* Card titles */
.card-title {
  margin-bottom: 1rem;
  font-size: 1.125rem;
  font-weight: 600;
}

/* Main race content */
.main-race {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.race-image-container {
  width: 100%;
  height: 200px;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 400 200"><rect width="400" height="200" fill="%231e293b"/><circle cx="200" cy="100" r="80" fill="%23334155" opacity="0.3"/></svg>');
  background-size: cover;
  background-position: center;
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.race-image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Bandera reubicada sobre la imagen */
.race-flag {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  border-radius: 0.25rem;
  border: 2px solid white;
  width: 32px;
  height: 24px;
  object-fit: cover;
  z-index: 2; /* Asegura que esté por encima del contenido */
  background: white; /* Fondo blanco en caso de error de carga */
}

.race-info {
  padding-top: 0.5rem;
}

.race-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.circuit-name {
  color: var(--color-text-muted);
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

.race-date {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 1rem;
}

.countdown {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-accent);
  font-family: var(--font-mono);
}

/* Timezone selector */
.timezone-selector {
  margin: 1.5rem 0;
}

.timezone-main {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.country-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--color-bg-hover);
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  color: var(--color-text);
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font-sans);
  font-size: 0.875rem;
}

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

.flag {
  width: 32px;
  height: 24px;
  object-fit: cover;
  border-radius: 3px;
}

.dropdown-icon {
  font-size: 0.75rem;
  opacity: 0.7;
}

.time-display {
  display: flex;
  flex-direction: column;
}

.time {
  font-size: 1.25rem;
  font-weight: 700;
  font-family: var(--font-mono);
}

.offset {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.view-all-btn {
  margin-left: auto;
  padding: 0.5rem 1rem;
  background: transparent;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  border-radius: 0.5rem;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font-sans);
}

.view-all-btn:hover {
  background: var(--color-accent);
  color: white;
}

/* Standings preview */
.standings-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin: 1rem 0;
}

.driver-item, .constructor-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  border-radius: 0.5rem;
  background: rgba(255, 255, 255, 0.05);
}

.driver-rank, .constructor-rank {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  font-size: 0.875rem;
  font-weight: 600;
}

.rank-gold {
  background: var(--color-gold);
  color: var(--color-bg);
}

.rank-silver {
  background: var(--color-silver);
  color: var(--color-bg);
}

.rank-bronze {
  background: var(--color-bronze);
  color: white;
}

.rank-normal {
  background: var(--color-bg-card);
  color: var(--color-text);
}

.driver-name, .constructor-name {
  flex: 1;
  font-weight: 500;
}

.driver-points, .constructor-points {
  font-family: var(--font-mono);
  font-weight: 600;
}

.standing-more-link {
  display: block;
  text-align: center;
  color: var(--color-accent);
  text-decoration: none;
  margin-top: 1rem;
  padding: 0.5rem;
  border-radius: 0.5rem;
  transition: background 0.2s;
}

.standing-more-link:hover {
  background: rgba(225, 6, 0, 0.1);
}

/* Historical section */
.historical-section {
  margin-top: 2rem;
  grid-column: 1 / -1;
}

.historical-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.history-filter-controls {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tab-btn {
  padding: 0.5rem 1rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  border-radius: 0.5rem;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: all 0.2s;
}

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

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

.table-container {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  overflow: hidden;
  overflow-x: auto;
}

.standings-table {
  width: 100%;
  border-collapse: collapse;
}

.standings-table th {
  background: var(--color-bg-card);
  position: sticky;
  top: 0;
  z-index: 10;
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-weight: 600;
  cursor: pointer;
}

.standings-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.standings-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.05);
}

.sortable th {
  position: relative;
}

.sortable th::after {
  content: '↕️';
  position: absolute;
  right: 0.5rem;
  opacity: 0.5;
}

.sortable th.sorted-asc::after {
  content: '↑';
  opacity: 1;
}

.sortable th.sorted-desc::after {
  content: '↓';
  opacity: 1;
}

/* Modal */
.timezone-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 90%;
  max-width: 500px;
  max-height: 80vh;
  background: var(--color-bg-card);
  border-radius: 1rem;
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.modal-header h3 {
  margin: 0;
  font-size: 1.25rem;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.25rem;
}

.modal-close:hover {
  color: var(--color-text);
}

.modal-body {
  padding: 1rem;
  overflow-y: auto;
  max-height: 60vh;
}

.country-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.75rem 1rem;
  background: transparent;
  border: none;
  border-radius: 0.5rem;
  color: var(--color-text);
  cursor: pointer;
  transition: background 0.2s;
}

.country-row:hover {
  background: var(--color-bg-hover);
}

.country-row.selected {
  background: var(--color-accent);
}

.country-row .time {
  margin-left: auto;
  font-size: 1.125rem;
}

.country-row .offset {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-left: 0.5rem;
}

/* Loading states and skeletons */
.loading {
  opacity: 0.7;
}

.skeleton {
  animation: pulse 1.5s infinite ease-in-out;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.skeleton-box {
  height: 150px;
  background: var(--color-bg-card);
  border-radius: 0.75rem;
  margin-bottom: 1rem;
}

.skeleton-text {
  height: 1.2rem;
  background: var(--color-bg-card);
  border-radius: 0.5rem;
  margin-bottom: 0.5rem;
}

.skeleton-text.short {
  width: 60%;
}

.skeleton-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.skeleton-item {
  height: 4rem;
  background: var(--color-bg-card);
  border-radius: 0.5rem;
}

.skeleton-button {
  height: 2.5rem;
  background: var(--color-bg-card);
  border-radius: 0.5rem;
  margin-top: 1rem;
}

.skeleton-table-row {
  height: 3rem;
  background: var(--color-bg-card);
  margin-bottom: 0.5rem;
}

/* Utility classes */
.text-center {
  text-align: center;
}

.hidden {
  display: none;
}