/* Variables de Diseño y Paleta de Colores (FIFA Gold & Sleek Dark) */
:root {
  --font-family: 'Outfit', sans-serif;
  
  /* Colores */
  --bg-color: #0c0f17;
  --card-bg: rgba(22, 28, 45, 0.65);
  --card-border: rgba(255, 255, 255, 0.08);
  --card-hover-border: rgba(212, 175, 55, 0.4);
  
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --primary-gold: #d4af37;
  --primary-gold-rgb: 212, 175, 55;
  --primary-gold-hover: #f3cf55;
  --secondary-blue: #1d4ed8;
  --secondary-blue-hover: #2563eb;
  
  --accent-green: #10b981;
  --accent-red: #ef4444;
  --accent-yellow: #f59e0b;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.25), 0 10px 10px -5px rgba(0, 0, 0, 0.15);
  --shadow-gold: 0 0 15px rgba(212, 175, 55, 0.2);
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Modo Claro Adaptativo */
@media (prefers-color-scheme: light) {
  :root {
    --bg-color: #f3f4f6;
    --card-bg: rgba(255, 255, 255, 0.85);
    --card-border: rgba(0, 0, 0, 0.06);
    --card-hover-border: rgba(212, 175, 55, 0.6);
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.05);
  }
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.5;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Fondo de Gradientes Dinámicos */
.bg-gradient-shapes {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.bg-gradient-shapes::before,
.bg-gradient-shapes::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.12;
}

.bg-gradient-shapes::before {
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, var(--primary-gold), transparent 60%);
  top: -10vw;
  right: -10vw;
}

.bg-gradient-shapes::after {
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, var(--secondary-blue), transparent 60%);
  bottom: -20vw;
  left: -20vw;
}

/* HEADER DEL APP */
.app-header {
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(var(--bg-color), 0.7);
  border-bottom: 1px solid var(--card-border);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 1.5rem 2rem 0 2rem;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 1rem;
}

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

.logo-placeholder {
  font-size: 2.2rem;
  background: linear-gradient(135deg, var(--primary-gold), #b8860b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
  animation: bounce 3s infinite ease-in-out;
}

.brand h1 {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(90deg, var(--text-primary), var(--primary-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand .subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 400;
}

/* Controles de Simulador */
.controls-panel {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.timezone-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--card-border);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-lg);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-green);
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse 2s infinite;
}

.action-buttons {
  display: flex;
  gap: 0.5rem;
}

/* Botones Estilo Premium */
.btn {
  font-family: var(--font-family);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.5rem 1.2rem;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-gold), #b8860b);
  color: #0c0f17;
  box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-gold-hover), var(--primary-gold));
  transform: translateY(-1px);
}

.btn-primary.active {
  background: var(--accent-green);
  color: white;
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border: 1px solid var(--card-border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* PESTAÑAS (TABS) */
.nav-tabs {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
  border-bottom: none;
}

.tab-link {
  font-family: var(--font-family);
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.8rem 1.5rem;
  cursor: pointer;
  position: relative;
  transition: color var(--transition-fast);
}

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

.tab-link.active {
  color: var(--primary-gold);
}

.tab-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-gold), transparent);
  border-top-left-radius: 3px;
  border-top-right-radius: 3px;
}

/* MAIN CONTENT */
.app-main {
  max-width: 1400px;
  margin: 2.5rem auto;
  padding: 0 2rem;
  min-height: 60vh;
}

.tab-content {
  display: none;
  animation: fadeIn var(--transition-normal);
}

.tab-content.active {
  display: block;
}

/* Secciones Informativas */
.section-header {
  margin-bottom: 2rem;
}

.section-header h2 {
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.section-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 0.2rem;
}

.section-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1.5rem;
}

/* TARJETAS Y CONTENEDOR DE PARTIDOS */
.matches-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 1.5rem;
}

.card {
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

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

/* Tarjeta del Partido */
.match-card {
  padding: 1.2rem;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* Línea de Estado del Partido */
.match-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  padding-bottom: 0.6rem;
  margin-bottom: 0.8rem;
}

.match-stage-badge {
  font-weight: 700;
  text-transform: uppercase;
  color: var(--primary-gold);
  letter-spacing: 0.5px;
}

.match-status-badge {
  font-weight: 600;
}

.match-status-badge.live {
  color: var(--accent-green);
  animation: blink 1.5s infinite;
}

/* Equipos y Marcadores */
.match-body {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.team-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.team-info {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-weight: 600;
  font-size: 1.05rem;
}

.team-flag {
  font-size: 1.6rem;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.15));
}

.score-display {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  width: 40px;
  text-align: center;
  padding: 2px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-sm);
}

.score-display.empty {
  color: var(--text-muted);
  font-weight: 400;
}

/* inputs del simulador */
.score-input {
  width: 45px;
  height: 38px;
  text-align: center;
  font-family: var(--font-family);
  font-size: 1.25rem;
  font-weight: 800;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  color: var(--primary-gold);
  outline: none;
  transition: border-color var(--transition-fast);
}

.score-input:focus {
  border-color: var(--primary-gold);
  box-shadow: 0 0 10px rgba(var(--primary-gold-rgb), 0.2);
}

/* Quitar flechitas del input de número */
.score-input::-webkit-outer-spin-button,
.score-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Detalles de Sede/Hora del partido */
.match-footer {
  margin-top: 1rem;
  padding-top: 0.6rem;
  border-top: 1px solid rgba(255,255,255,0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.match-venue {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 60%;
}

.match-time {
  font-weight: 600;
  color: var(--text-secondary);
}

/* FASE DE GRUPOS - DISPOSICION */
.group-selector-wrapper {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.select-control {
  font-family: var(--font-family);
  font-weight: 600;
  font-size: 0.95rem;
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  padding: 0.5rem 1.5rem;
  outline: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.group-detail-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2rem;
}

@media (max-width: 1024px) {
  .group-detail-layout {
    grid-template-columns: 1fr;
  }
}

.card-header {
  padding: 1.2rem 1.5rem;
  border-bottom: 1px solid var(--card-border);
}

.card-header h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary-gold);
}

/* TABLA DE POSICIONES */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

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

.standings-table th, 
.standings-table td {
  padding: 0.9rem 1.2rem;
  border-bottom: 1px solid var(--card-border);
  font-size: 0.92rem;
}

.standings-table th {
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.5px;
}

.standings-table tbody tr {
  transition: background-color var(--transition-fast);
}

.standings-table tbody tr:hover {
  background-color: rgba(255, 255, 255, 0.02);
}

.col-pos {
  width: 45px;
  text-align: center;
  font-weight: 800;
  color: var(--text-muted);
}

/* Filas clasificatorias */
.row-qualify-direct .col-pos {
  color: var(--accent-green);
}
.row-qualify-third .col-pos {
  color: var(--accent-yellow);
}

.col-stat {
  width: 40px;
  text-align: center;
}

.highlight-pts {
  font-weight: 800;
  color: var(--primary-gold);
  background-color: rgba(212, 175, 55, 0.05);
}

.standings-legend {
  padding: 1rem 1.5rem;
  display: flex;
  gap: 1.5rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.bullet {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.bullet-green { background-color: var(--accent-green); }
.bullet-yellow { background-color: var(--accent-yellow); }

/* CONTENEDOR DE PARTIDOS DE GRUPO */
.group-matches-wrapper {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.matches-list-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* FASE ELIMINATORIA - LLAVES */
.bracket-outer {
  width: 100%;
  overflow-x: auto;
  padding: 1.5rem 0;
  cursor: grab;
}

.bracket-outer::-webkit-scrollbar {
  height: 8px;
}
.bracket-outer::-webkit-scrollbar-thumb {
  background: var(--card-border);
  border-radius: 4px;
}

.bracket-container {
  display: flex;
  gap: 3.5rem;
  min-width: 1100px;
  padding: 1rem;
  justify-content: space-between;
}

.bracket-round {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.round-title {
  text-align: center;
  font-size: 0.95rem;
  color: var(--primary-gold);
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 2rem;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--card-border);
  padding-bottom: 0.5rem;
}

.bracket-matches {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  height: 100%;
  gap: 1.2rem;
}

/* Cajas de partido individuales de llaves */
.match-box-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  width: 100%;
}

.stage-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 700;
  letter-spacing: 0.5px;
  padding-left: 0.4rem;
}

.match-box {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 0.7rem 0.9rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.match-box:hover {
  border-color: var(--card-hover-border);
}

.match-box .team-row {
  padding: 0.3rem 0;
}

.match-box .team-name {
  font-size: 0.85rem;
  font-weight: 600;
  max-width: 110px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.match-box .team-flag {
  font-size: 1.2rem;
}

.match-box .score-display {
  font-size: 1.1rem;
  width: 25px;
  background: none;
}

.match-box .score-input {
  width: 32px;
  height: 28px;
  font-size: 0.95rem;
  padding: 0;
  border-radius: 4px;
}

/* Resaltar la final */
.highlight-label {
  color: var(--primary-gold);
}

.highlight-box {
  border: 2px solid var(--primary-gold);
  box-shadow: var(--shadow-gold);
  transform: scale(1.02);
}

/* FOOTER */
.app-footer {
  text-align: center;
  padding: 3rem 2rem;
  border-top: 1px solid var(--card-border);
  color: var(--text-muted);
  font-size: 0.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.credits {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* ANIMACIONES */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

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

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
  }
  70% {
    box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
  }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.loading {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 1.1rem;
}