/* ==========================================================================
   CULTURA PERU - SISTEMA DE DISENO ARMONIZADO
   Paleta: Obsidiana Andina, Rojo Carmesi Bicentenario y Dorado Oro Inca
   Regla estricta: border-radius <= 2px en todos los componentes
   ========================================================================== */

:root {
    /* Fondos y Superficies */
    --bg-base: #090d16;
    --bg-surface: #0f1624;
    --bg-surface-elevated: #151f32;
    --bg-surface-hover: #1b273e;
    --bg-sidebar: #0b101b;

    /* Bordes y Separadores */
    --border-subtle: #1c273a;
    --border-strong: #26354f;
    --border-focus: #c22033;

    /* Rojo Peru (Carmesi Bicentenario) Armonizado */
    --peru-red: #c22033;
    --peru-red-hover: #a81728;
    --peru-red-active: #8e101f;
    --peru-red-subtle: rgba(194, 32, 51, 0.14);
    --peru-red-border: rgba(194, 32, 51, 0.35);
    --peru-red-text: #f87171;

    /* Dorado Oro Inca Armonizado */
    --peru-gold: #d97706;
    --peru-gold-hover: #b45309;
    --peru-gold-subtle: rgba(217, 119, 6, 0.14);
    --peru-gold-border: rgba(217, 119, 6, 0.35);
    --peru-gold-text: #fbbf24;

    /* Colores Semanticos Armonizados */
    --color-success: #10b981;
    --color-success-subtle: rgba(16, 185, 129, 0.14);
    --color-success-border: rgba(16, 185, 129, 0.32);
    --color-success-text: #34d399;

    --color-info: #0284c7;
    --color-info-subtle: rgba(2, 132, 199, 0.14);
    --color-info-border: rgba(2, 132, 199, 0.32);
    --color-info-text: #38bdf8;

    --color-warning: #eab308;
    --color-warning-subtle: rgba(234, 179, 8, 0.14);
    --color-warning-border: rgba(234, 179, 8, 0.32);
    --color-warning-text: #fde047;

    --color-danger: #ef4444;
    --color-danger-subtle: rgba(239, 68, 68, 0.14);
    --color-danger-border: rgba(239, 68, 68, 0.32);
    --color-danger-text: #f87171;

    /* Tipografia y Textos */
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #8493a8;
}

/* Regla estricta de border-radius no mayor a 2px */
*,
*::before,
*::after,
.btn,
.card,
.card-custom,
.card-header,
.badge,
.form-control,
.form-select,
.input-group,
.input-group-text,
.alert,
.modal-content,
.dropdown-menu,
.dropdown-item,
.nav-link,
.nav-pills .nav-link,
.pagination .page-link,
.progress,
.progress-bar,
.avatar-circle,
.avatar-lg,
.status-indicator,
.list-group-item,
.rounded,
.rounded-1,
.rounded-2,
.rounded-3,
.rounded-4,
.rounded-5,
.rounded-pill,
.rounded-circle {
    border-radius: 2px !important;
}

body {
    background-color: var(--bg-base);
    color: var(--text-secondary);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    letter-spacing: -0.01em;
}

.main-content {
    flex: 1 0 auto;
}

/* Navbar */
.navbar-custom {
    background-color: var(--bg-sidebar);
    border-bottom: 1px solid var(--border-subtle);
}

.brand-text {
    font-weight: 800;
    letter-spacing: 0.5px;
    color: #ffffff;
}

.brand-text span {
    color: var(--peru-red-text);
}

/* Tarjetas y Superficies */
.card-custom {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.card-custom:hover {
    border-color: var(--border-strong);
}

.card-header-custom {
    background-color: rgba(11, 16, 27, 0.6);
    border-bottom: 1px solid var(--border-subtle);
    padding: 0.85rem 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Botones Armonizados */
.btn-peru {
    background-color: var(--peru-red);
    color: #ffffff;
    border: 1px solid var(--peru-red);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.55rem 1.2rem;
    transition: all 0.15s ease-in-out;
}

.btn-peru:hover,
.btn-peru:focus {
    background-color: var(--peru-red-hover);
    border-color: var(--peru-red-hover);
    color: #ffffff;
    box-shadow: 0 0 10px rgba(194, 32, 51, 0.3);
}

.btn-danger {
    background-color: var(--peru-red) !important;
    border-color: var(--peru-red) !important;
    color: #ffffff !important;
}

.btn-danger:hover,
.btn-danger:focus {
    background-color: var(--peru-red-hover) !important;
    border-color: var(--peru-red-hover) !important;
}

.btn-gold {
    background-color: var(--peru-gold);
    color: #0b101b;
    border: 1px solid var(--peru-gold);
    font-weight: 700;
    font-size: 0.9rem;
    padding: 0.55rem 1.2rem;
    transition: all 0.15s ease-in-out;
}

.btn-gold:hover,
.btn-gold:focus {
    background-color: var(--peru-gold-hover);
    border-color: var(--peru-gold-hover);
    color: #ffffff;
    box-shadow: 0 0 10px rgba(217, 119, 6, 0.3);
}

.btn-outline-custom {
    background-color: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-strong);
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.55rem 1.2rem;
    transition: all 0.15s ease-in-out;
}

.btn-outline-custom:hover {
    background-color: var(--bg-surface-elevated);
    border-color: var(--border-strong);
    color: var(--text-primary);
}

.btn-outline-danger {
    color: var(--peru-red-text) !important;
    border-color: var(--peru-red-border) !important;
    background-color: transparent !important;
}

.btn-outline-danger:hover {
    background-color: var(--peru-red) !important;
    border-color: var(--peru-red) !important;
    color: #ffffff !important;
}

.btn-outline-warning {
    color: var(--peru-gold-text) !important;
    border-color: var(--peru-gold-border) !important;
    background-color: transparent !important;
}

.btn-outline-warning:hover {
    background-color: var(--peru-gold) !important;
    border-color: var(--peru-gold) !important;
    color: #0b101b !important;
}

.btn-outline-success {
    color: var(--color-success-text) !important;
    border-color: var(--color-success-border) !important;
    background-color: transparent !important;
}

.btn-outline-success:hover {
    background-color: var(--color-success) !important;
    border-color: var(--color-success) !important;
    color: #ffffff !important;
}

.btn-outline-secondary {
    color: var(--text-muted) !important;
    border-color: var(--border-subtle) !important;
    background-color: transparent !important;
}

.btn-outline-secondary:hover {
    background-color: var(--bg-surface-elevated) !important;
    border-color: var(--border-strong) !important;
    color: var(--text-primary) !important;
}

.btn-outline-light {
    color: var(--text-secondary) !important;
    border-color: var(--border-strong) !important;
    background-color: transparent !important;
}

.btn-outline-light:hover {
    background-color: var(--bg-surface-elevated) !important;
    color: #ffffff !important;
}

/* Formularios e Inputs Armonizados */
.form-control,
.form-select {
    background-color: #0b111d !important;
    border: 1px solid var(--border-strong) !important;
    color: var(--text-primary) !important;
    font-size: 0.9rem;
    padding: 0.55rem 0.85rem;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--peru-red) !important;
    box-shadow: 0 0 0 1px var(--peru-red) !important;
    background-color: #0f1624 !important;
}

.input-group-text {
    background-color: #080c14 !important;
    border: 1px solid var(--border-strong) !important;
    color: var(--text-muted) !important;
}

/* Insignias / Badges Armonizados con Fondo Sutil y Borde Fino */
.badge {
    font-weight: 600;
    font-size: 0.75rem;
    padding: 0.3rem 0.55rem;
    letter-spacing: 0.02em;
    border: 1px solid transparent;
}

.badge.bg-success,
.badge-success {
    background-color: var(--color-success-subtle) !important;
    color: var(--color-success-text) !important;
    border-color: var(--color-success-border) !important;
}

.badge.bg-warning,
.badge-warning {
    background-color: var(--peru-gold-subtle) !important;
    color: var(--peru-gold-text) !important;
    border-color: var(--peru-gold-border) !important;
}

.badge.bg-danger,
.badge-danger {
    background-color: var(--peru-red-subtle) !important;
    color: var(--peru-red-text) !important;
    border-color: var(--peru-red-border) !important;
}

.badge.bg-secondary,
.badge-secondary {
    background-color: rgba(148, 163, 184, 0.12) !important;
    color: var(--text-muted) !important;
    border-color: rgba(148, 163, 184, 0.22) !important;
}

.badge.bg-primary,
.badge-primary {
    background-color: var(--color-info-subtle) !important;
    color: var(--color-info-text) !important;
    border-color: var(--color-info-border) !important;
}

.badge.bg-info,
.badge-info {
    background-color: var(--color-info-subtle) !important;
    color: var(--color-info-text) !important;
    border-color: var(--color-info-border) !important;
}

.badge-level {
    background-color: var(--peru-gold-subtle);
    color: var(--peru-gold-text);
    border: 1px solid var(--peru-gold-border);
    font-weight: 700;
    padding: 0.25rem 0.5rem;
    font-size: 0.78rem;
}

.badge-elo {
    background-color: var(--peru-red-subtle);
    color: var(--peru-red-text);
    border: 1px solid var(--peru-red-border);
    font-weight: 700;
    padding: 0.25rem 0.5rem;
    font-size: 0.78rem;
}

/* Tablas Armonizadas */
.table-custom {
    color: var(--text-secondary);
    border-collapse: separate;
    border-spacing: 0;
    margin-bottom: 0;
}

.table-custom th {
    background-color: #0b101c;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    padding: 0.85rem 0.75rem;
    border-bottom: 1px solid var(--border-subtle);
    border-top: none;
}

.table-custom td {
    background-color: transparent;
    border-bottom: 1px solid var(--border-subtle);
    border-top: none;
    padding: 0.85rem 0.75rem;
    vertical-align: middle;
    font-size: 0.88rem;
}

.table-custom tbody tr:hover td {
    background-color: rgba(255, 255, 255, 0.025);
}

/* Sidebar del Panel Administrativo */
.admin-sidebar {
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-subtle);
    width: 250px;
    flex-shrink: 0;
}

.admin-sidebar-header {
    padding: 1.15rem 1.25rem;
    border-bottom: 1px solid var(--border-subtle);
}

.admin-nav-item .nav-link {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.88rem;
    padding: 0.65rem 0.95rem;
    margin-bottom: 0.2rem;
    border-left: 2px solid transparent;
    transition: all 0.15s ease-in-out;
}

.admin-nav-item .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
}

.admin-nav-item .nav-link.active {
    background-color: var(--peru-red-subtle) !important;
    color: var(--peru-red-text) !important;
    border-left: 2px solid var(--peru-red) !important;
    font-weight: 600;
}

/* Modos de Juego y Tarjetas Interactivas */
.game-mode-card {
    cursor: pointer;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    padding: 1.5rem;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.game-mode-card:hover {
    border-color: var(--peru-red);
    background-color: var(--bg-surface-elevated);
}

/* Arena de Juego */
.arena-timer {
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--peru-gold-text);
    line-height: 1;
}

.arena-question-text {
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.5;
    color: var(--text-primary);
}

.option-button {
    display: block;
    width: 100%;
    text-align: left;
    background-color: #0b111d;
    border: 1px solid var(--border-strong);
    padding: 0.95rem 1.2rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.15s ease;
    margin-bottom: 0.75rem;
}

.option-button:hover:not(:disabled) {
    background-color: var(--bg-surface-elevated);
    border-color: var(--peru-gold);
}

.option-button.selected {
    background-color: rgba(2, 132, 199, 0.18);
    border-color: var(--color-info);
    color: #ffffff;
}

.option-button.correct {
    background-color: var(--color-success-subtle) !important;
    border-color: var(--color-success) !important;
    color: var(--color-success-text) !important;
    font-weight: 700;
}

.option-button.incorrect {
    background-color: var(--color-danger-subtle) !important;
    border-color: var(--color-danger) !important;
    color: var(--color-danger-text) !important;
}

/* Avatares y Estado */
.avatar-circle {
    width: 36px;
    height: 36px;
    background-color: #1a2538;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--text-primary);
    border: 1px solid var(--border-strong);
    font-size: 0.85rem;
}

.avatar-lg {
    width: 72px;
    height: 72px;
    font-size: 1.5rem;
}

.status-indicator {
    width: 8px;
    height: 8px;
    display: inline-block;
    margin-right: 6px;
}

.status-online { background-color: var(--color-success); }
.status-in_game { background-color: var(--peru-gold); }
.status-offline { background-color: #475569; }

/* Barras de Progreso Armonizadas */
.progress {
    background-color: #121a28 !important;
    height: 6px;
}

.progress-xp {
    background-color: #121a28;
    height: 8px;
    overflow: hidden;
}

.progress-xp-bar {
    background: linear-gradient(90deg, var(--peru-red), var(--peru-gold));
    transition: width 0.3s ease;
}

/* Paginacion Armonizada */
.pagination .page-link {
    background-color: #0b111d;
    border-color: var(--border-subtle);
    color: var(--text-secondary);
    padding: 0.45rem 0.8rem;
    font-size: 0.85rem;
}

.pagination .page-item.active .page-link {
    background-color: var(--peru-red);
    border-color: var(--peru-red);
    color: #ffffff;
    font-weight: 600;
}

.pagination .page-link:hover {
    background-color: var(--bg-surface-elevated);
    border-color: var(--border-strong);
    color: #ffffff;
}

/* Alertas Armonizadas */
.alert {
    border: 1px solid transparent;
    font-size: 0.9rem;
}

.alert-success {
    background-color: var(--color-success-subtle);
    border-color: var(--color-success-border);
    color: var(--color-success-text);
}

.alert-danger {
    background-color: var(--color-danger-subtle);
    border-color: var(--color-danger-border);
    color: var(--color-danger-text);
}

.alert-info {
    background-color: var(--color-info-subtle);
    border-color: var(--color-info-border);
    color: var(--color-info-text);
}

/* Animacion de pulso para emparejamiento */
@keyframes radar-pulse {
    0% { transform: scale(0.98); opacity: 0.8; }
    50% { transform: scale(1.02); opacity: 1; }
    100% { transform: scale(0.98); opacity: 0.8; }
}

.pulse-radar {
    animation: radar-pulse 2s infinite ease-in-out;
}