/**
 * Buscador de Canales - Servidores Astras
 * Hoja de estilos principal (Professional UI)
 * Versión: 1.0.0
 */

/* =========================================
   1. VARIABLES Y TEMAS (Dark/Light)
   ========================================= */
:root {
    /* Colores Base (Dark Mode - Defecto) */
    --bg-body: #0f172a;
    --bg-card: #1e293b;
    --bg-input: #0f172a;
    --bg-hover: #334155;
    --border-color: #334155;
    
    --text-main: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --secondary: #475569;
    
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #0ea5e9;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    
    --transition: all 0.2s ease-in-out;
}

/* Light Mode Overrides */
[data-theme="light"] {
    --bg-body: #f8fafc;
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --bg-hover: #f1f5f9;
    --border-color: #e2e8f0;
    
    --text-main: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

/* =========================================
   2. GLOBAL & RESET
   ========================================= */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color 0.3s, color 0.3s;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

main {
    flex: 1;
}

a {
    text-decoration: none;
    color: var(--primary);
    transition: var(--transition);
}

a:hover {
    color: var(--primary-hover);
}

/* =========================================
   3. HEADER / NAVBAR
   ========================================= */
.app-header {
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    z-index: 1020;
    padding: 0.75rem 0;
}

.app-logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.app-logo i {
    color: var(--primary);
    font-size: 1.5rem;
}

/* Dropdowns en Dark/Light */
.dropdown-menu {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

.dropdown-item {
    color: var(--text-secondary);
}

.dropdown-item:hover, .dropdown-item:focus {
    background-color: var(--bg-hover);
    color: var(--text-main);
}

/* =========================================
   4. CARDS & CONTAINERS
   ========================================= */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: 1rem;
    overflow: hidden;
    transition: var(--transition);
}

.card-body {
    padding: 1.5rem;
}

/* =========================================
   5. FORMULARIOS Y INPUTS
   ========================================= */
.form-control, .form-select {
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    border-radius: var(--radius-md);
    padding: 0.6rem 1rem;
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-control:focus, .form-select:focus {
    background-color: var(--bg-input);
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
    color: var(--text-main);
}

.form-control::placeholder {
    color: var(--text-muted);
}

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

/* =========================================
   6. TABLAS
   ========================================= */
.table {
    color: var(--text-main);
    margin-bottom: 0;
    border-color: var(--border-color);
}

.table thead th {
    background-color: var(--bg-card);
    color: var(--text-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    padding: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.table tbody td {
    padding: 0.75rem 1rem;
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
}

.table-hover tbody tr:hover {
    background-color: var(--bg-hover);
}

/* Filas animadas al cargar */
@keyframes fadeInRow {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}
.table tbody tr {
    animation: fadeInRow 0.3s ease-out forwards;
}

/* =========================================
   7. BOTONES
   ========================================= */
.btn {
    font-weight: 500;
    border-radius: var(--radius-md);
    padding: 0.6rem 1.25rem;
    font-size: 0.9rem;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

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

.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
}

/* =========================================
   8. BADGES Y ETIQUETAS
   ========================================= */
.badge {
    font-weight: 500;
    padding: 0.35em 0.65em;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
}

.badge-status {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.badge-status::before {
    content: '';
    display: block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: currentColor;
}

.badge-online {
    background-color: rgba(34, 197, 94, 0.15);
    color: var(--success);
}

.badge-offline {
    background-color: rgba(239, 68, 68, 0.15);
    color: var(--danger);
}

.badge-country {
    background-color: rgba(99, 102, 241, 0.15);
    color: var(--primary);
}

/* =========================================
   9. FOOTER
   ========================================= */
.app-footer {
    background-color: var(--bg-card);
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

/* =========================================
   10. TOASTS (Notificaciones)
   ========================================= */
.toast {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    border-radius: var(--radius-md);
}

.toast-header {
    background-color: transparent;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
}

/* =========================================
   11. UTILIDADES RESPONSIVE
   ========================================= */
@media (max-width: 768px) {
    .app-header .container-fluid {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .search-section .row > div {
        margin-bottom: 0.5rem;
    }
    
    .action-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .table-responsive {
        border-radius: var(--radius-md);
    }
    
    .table td, .table th {
        white-space: nowrap;
        padding: 0.5rem;
    }
}

/* Scrollbar personalizado */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-body);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}