:root {
    --sidebar-width: 280px;
    --primary: #00d4ff;
    --primary-gradient: linear-gradient(135deg, #00d4ff, #0072ff);
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --sidebar-bg: #020617;
    --border: rgba(255, 255, 255, 0.05);
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    --bg-input: rgba(0, 0, 0, 0.2);
    --bg-surface: rgba(0, 0, 0, 0.1);
    --overlay-bg: rgba(2, 6, 23, 0.85);
}

[data-theme="light"] {
    --bg-dark: #f8fafc;
    --bg-card: #ffffff;
    --sidebar-bg: #ffffff;
    --border: rgba(0, 0, 0, 0.08);
    --text-main: #1e293b;
    --text-muted: #64748b;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    --bg-input: #f1f5f9;
    --bg-surface: #f8fafc;
    --overlay-bg: rgba(255, 255, 255, 0.85);
}

body {
    display: flex;
    background: var(--bg-dark);
    color: var(--text-main);
    height: 100vh;
    overflow: hidden;
    font-family: 'Inter', sans-serif;
    transition: background 0.3s ease, color 0.3s ease;
}

.admin-sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 30px 20px;
    overflow-y: auto;
    height: 100vh;
    transition: var(--transition);
}

.admin-sidebar::-webkit-scrollbar {
    width: 5px;
}

.admin-sidebar::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 10px;
}

.sidebar-logo {
    margin-bottom: 50px;
    text-align: left;
    padding-left: 15px;
}

.admin-nav {
    flex: 1;
}

.nav-item {
    padding: 14px 20px;
    border-radius: 12px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
}

.nav-item:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.03);
}

.nav-item.active {
    background: var(--primary-gradient);
    color: #fff;
    box-shadow: 0 10px 20px -5px rgba(0, 212, 255, 0.3);
}

.main-panel {
    flex: 1;
    padding: 40px;
    overflow-y: auto;
    background: radial-gradient(circle at top right, rgba(0, 212, 255, 0.05), transparent);
    transition: background 0.3s ease;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.panel-header h2 {
    font-size: 1.8rem;
    font-weight: 800;
}

.btn-add {
    background: var(--primary-gradient);
    color: #fff;
    padding: 12px 25px;
    border-radius: 12px;
    font-weight: 700;
    box-shadow: 0 10px 20px -5px rgba(0, 212, 255, 0.3);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.stat-card {
    background: var(--bg-card);
    padding: 25px;
    border-radius: 20px;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.stat-val {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 5px;
    color: var(--primary);
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Tables */
.admin-table-container {
    background: var(--bg-card);
    border-radius: 20px;
    border: 1px solid var(--border);
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

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

.admin-table th {
    text-align: left;
    padding: 20px;
    background: rgba(0,0,0,0.2);
    color: var(--text-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.admin-table td {
    padding: 20px;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
    color: var(--text-main);
}

.admin-table tr:hover td {
    background: var(--bg-surface);
}

/* Status Badges */
.badge {
    padding: 6px 12px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
}

.badge-success { background: rgba(0, 200, 83, 0.1); color: #00c853; }
.badge-warning { background: rgba(243, 156, 18, 0.1); color: #f39c12; }

.action-btns {
    display: flex;
    gap: 12px;
}

.btn-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: rgba(255,255,255,0.03);
    color: var(--text-muted);
    border: 1px solid var(--border);
}

.btn-icon:hover {
    background: var(--primary-gradient);
    color: #fff;
    border-color: transparent;
}

.btn-delete:hover {
    background: linear-gradient(135deg, #ff4757, #ff6b81);
}

/* Modals */
.modal {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: var(--overlay-bg);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.modal.active { display: flex; }

.modal-content {
    background: var(--bg-card);
    width: 90%;
    max-width: 600px;
    padding: 40px;
    border-radius: 24px;
    border: 1px solid var(--border);
    box-shadow: 0 40px 100px rgba(0,0,0,0.5);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group { margin-bottom: 20px; }
.form-group.full { grid-column: span 2; }

.form-group label { 
    display: block; 
    margin-bottom: 8px; 
    color: var(--text-muted); 
    font-size: 0.85rem; 
    font-weight: 600;
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border);
    padding: 12px 15px;
    border-radius: 12px;
    color: var(--text-main);
    font-size: 0.95rem;
    font-weight: 500;
}

.form-group select option {
    background-color: var(--bg-card);
    color: var(--text-main);
    padding: 10px;
}

.form-group input:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.1);
}

/* Tabs Visibility Control */
.tab-content {
    display: none !important;
}

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

/* Category Accordion */
.category-content.collapsed {
    display: none;
}

/* ========== MOBILE RESPONSIVENESS ========== */
@media (max-width: 768px) {
    :root {
        --sidebar-width: 100%;
    }

    body {
        flex-direction: column;
        overflow: hidden; /* Prevent double scroll */
    }

    .admin-sidebar {
        position: fixed;
        left: -100%;
        top: 0;
        z-index: 3000;
        height: 100vh;
        width: 85%;
        transition: var(--transition);
        box-shadow: 20px 0 50px rgba(0,0,0,0.5);
    }

    .admin-sidebar.active {
        left: 0;
    }

    .sidebar-logo {
        display: flex;
        align-items: center;
        margin-bottom: 30px;
    }

    .mobile-only {
        display: flex !important;
    }

    .mobile-topbar {
        background: var(--sidebar-bg);
        padding: 15px 20px;
        border-bottom: 1px solid var(--border);
        display: flex;
        align-items: center;
        position: sticky;
        top: 0;
        z-index: 2500;
    }

    .main-panel {
        padding: 20px;
        width: 100%;
        margin-top: 0;
    }

    .panel-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
        margin-bottom: 30px;
    }

    .panel-header h1 {
        font-size: 1.5rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .admin-table-container {
        overflow-x: auto;
    }

    .admin-table {
        min-width: 600px;
    }

    .modal-content {
        padding: 20px;
        width: 95%;
    }
    
    /* Overlays for mobile menu */
    .sidebar-overlay {
        position: fixed;
        top: 0; left: 0; width: 100%; height: 100%;
        background: rgba(0,0,0,0.5);
        z-index: 2999;
        display: none;
    }
    
    .sidebar-overlay.active {
        display: block;
    }
}

/* Additional Responsive fixes */
@media (max-width: 1024px) {
    :root {
        --sidebar-width: 240px;
    }
}

/* Component Classes to replace inline styles */
.search-input {
    width: 100%;
    padding: 12px 15px 12px 45px;
    background: var(--bg-input) !important;
    border: 1px solid var(--border) !important;
    border-radius: 10px;
    color: var(--text-main) !important;
}

.filter-group {
    display: flex;
    gap: 5px;
    background: var(--bg-surface);
    padding: 5px;
    border-radius: 10px;
}

.filter-btn {
    background: transparent;
    color: var(--text-muted);
}

.filter-btn.active {
    background: var(--bg-card);
    color: var(--primary);
    box-shadow: var(--shadow);
}

.date-input {
    width: 100%;
    background: var(--bg-input) !important;
    border: 1px solid var(--border) !important;
    border-radius: 10px;
    color: var(--text-main) !important;
    padding: 12px;
}

.smart-card {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, transparent 100%);
    padding: 25px;
    border-radius: 20px;
    border: 1px solid var(--border);
}

/* ============================================================
   ============== MEJORAS MÓVILES ADMIN v1.0 ===================
   Aditivas — refinan el dashboard en pantallas pequeñas.
   ============================================================ */

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { -webkit-tap-highlight-color: transparent; touch-action: manipulation; }
img, svg { max-width: 100%; height: auto; }

/* iOS safe-area */
@supports (padding: env(safe-area-inset-top)) {
    .admin-sidebar {
        padding-top: calc(30px + env(safe-area-inset-top));
        padding-bottom: calc(30px + env(safe-area-inset-bottom));
    }
    .main-panel {
        padding-bottom: calc(40px + env(safe-area-inset-bottom));
    }
}

/* Scrollbar fina dentro de tablas/sidebar */
.admin-table-container::-webkit-scrollbar { height: 6px; }
.admin-table-container::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.1); border-radius: 3px;
}
.admin-table-container::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* Tablet (≤ 1024px) */
@media (max-width: 1024px) {
    .main-panel { padding: 30px 24px; }
    .stat-card { padding: 20px; }
    .stat-val { font-size: 1.7rem; }
}

/* Móvil (≤ 768px) — refuerzos sobre la regla base ya existente */
@media (max-width: 768px) {
    body { height: auto; min-height: 100dvh; overflow-y: auto; }
    .main-panel {
        height: auto;
        min-height: calc(100dvh - 60px);
        padding: 18px 14px calc(40px + env(safe-area-inset-bottom));
    }
    .admin-sidebar {
        height: 100dvh;
        width: min(85%, 320px);
        padding: 24px 18px;
    }
    .sidebar-logo { margin-bottom: 22px; padding-left: 6px; }
    .nav-item { padding: 12px 16px; font-size: 0.9rem; }

    .mobile-topbar {
        padding: 12px 14px !important;
        padding-top: calc(12px + env(safe-area-inset-top)) !important;
    }

    /* Stats */
    .stats-grid { grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; margin-bottom: 24px; }
    .stat-card { padding: 16px 14px; border-radius: 14px; }
    .stat-val { font-size: 1.4rem; }
    .stat-label { font-size: 0.7rem; letter-spacing: 0.5px; }

    /* Headers */
    .panel-header { margin-bottom: 22px; }
    .panel-header h1, .panel-header h2 { font-size: 1.25rem !important; }
    .btn-add { padding: 11px 18px; font-size: 0.85rem; width: 100%; justify-content: center; display: flex; gap: 8px; }

    /* Tabla scroll horizontal con indicador */
    .admin-table-container { border-radius: 14px; -webkit-overflow-scrolling: touch; }
    .admin-table th, .admin-table td { padding: 14px 12px; font-size: 0.82rem; }
    .admin-table th { font-size: 0.65rem; }

    /* Inputs no zoom iOS */
    input, select, textarea { font-size: 16px !important; }

    /* Modal */
    .modal-content { padding: 22px 18px !important; border-radius: 18px; max-height: 90dvh; overflow-y: auto; }
    .form-group { margin-bottom: 16px; }
    .form-group label { font-size: 0.78rem; }
    .form-group input, .form-group select, .form-group textarea { padding: 12px 13px; }

    /* Botones de acción */
    .action-btns { gap: 8px; flex-wrap: wrap; }
    .btn-icon { width: 34px; height: 34px; }

    /* Smart-card y similares */
    .smart-card { padding: 18px 16px; border-radius: 16px; }

    /* Filter group horizontal scroll */
    .filter-group { overflow-x: auto; flex-wrap: nowrap; }
    .filter-group::-webkit-scrollbar { display: none; }
    .filter-btn { white-space: nowrap; padding: 8px 14px; font-size: 0.82rem; }
}

/* Móvil pequeño (≤ 480px) */
@media (max-width: 480px) {
    .main-panel { padding: 14px 12px calc(40px + env(safe-area-inset-bottom)); }
    .stats-grid { grid-template-columns: 1fr; gap: 10px; }
    .stat-card { display: flex; align-items: center; justify-content: space-between; flex-direction: row-reverse; padding: 14px 16px; }
    .stat-val { font-size: 1.3rem; margin-bottom: 0; }

    .admin-sidebar { width: 90%; padding: 20px 14px; }
    .nav-item { padding: 11px 14px; font-size: 0.88rem; gap: 12px; }

    .modal-content { padding: 18px 14px !important; border-radius: 14px; }
    .panel-header h1, .panel-header h2 { font-size: 1.1rem !important; }

    .admin-table th, .admin-table td { padding: 12px 10px; font-size: 0.78rem; }
}

/* Pantallas muy pequeñas (≤ 360px) */
@media (max-width: 360px) {
    .nav-item { font-size: 0.84rem; gap: 10px; padding: 10px 12px; }
    .btn-add { padding: 10px 14px; font-size: 0.82rem; }
    .stat-val { font-size: 1.15rem; }
}

/* Reducir animaciones por accesibilidad */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Focus visible mejorado */
button:focus-visible, a:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Mobile-only helper class */
.mobile-only { display: none; }
@media (max-width: 768px) {
    .mobile-only { display: flex !important; }
    .desktop-only { display: none !important; }
}