:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --dark-bg: #1e1b4b;
    --card-bg: #ffffff;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    --border: #e5e7eb;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
}

/* Header Principal (Header 1) */
.header-main {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1001;
}

.header-main-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: bold;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    white-space: nowrap;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 1rem;
    white-space: nowrap;
}

.user-name {
    font-weight: 600;
    color: var(--text-secondary);
}

.admin-badge {
    background: var(--accent-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* Header Secundario (Header 2 - Links) */
.header-nav {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    position: sticky;
    top: 60px;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.header-nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0.5rem 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    white-space: nowrap;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
}

.nav-links a:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

/* Container */
.container {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 2rem;
}

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
}

.card-header {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border);
}

.card-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.card-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-block;
    text-decoration: none;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 15px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: var(--text-secondary);
    color: white;
}

.btn-secondary:hover {
    background: var(--text-primary);
}

.btn-danger {
    background: var(--error);
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
}

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

.btn-success:hover {
    background: #059669;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    background: white;
    cursor: pointer;
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.table thead {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.table th,
.table td {
    padding: 1rem;
    text-align: left;
}

.table tbody tr {
    border-bottom: 1px solid var(--border);
    transition: background 0.2s;
}

.table tbody tr:hover {
    background: #f9fafb;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

.badge-success {
    background: #d1fae5;
    color: var(--success);
}

.badge-error {
    background: #fee2e2;
    color: var(--error);
}

.badge-warning {
    background: #fef3c7;
    color: var(--warning);
}

.badge-info {
    background: #dbeafe;
    color: var(--primary-color);
}

/* Alerts */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-weight: 500;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid var(--success);
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid var(--error);
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid var(--primary-color);
}

/* Grid */
.grid {
    display: grid;
    gap: 2rem;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

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

.text-right {
    text-align: right;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.hidden {
    display: none !important;
}

/* Loading */
.loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}

.spinner {
    border: 4px solid var(--border);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Paginación */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin: 2rem 0 1rem 0;
    flex-wrap: wrap;
}

.pagination-btn {
    padding: 0.5rem 1rem;
    background: white;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
    min-width: 40px;
}

.pagination-btn:hover:not(:disabled) {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.pagination-ellipsis {
    color: var(--text-secondary);
    padding: 0 0.5rem;
    font-weight: bold;
}

.pagination-info {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.5rem;
    font-weight: 500;
}

/* Responsive - Solo ajustes sutiles para móvil */
@media (max-width: 768px) {
    /* Prevenir scroll horizontal */
    html, body {
        overflow-x: hidden;
        max-width: 100vw;
    }

    /* Header principal más compacto en móvil */
    .header-main {
        overflow-x: hidden;
    }

    .header-main-container {
        padding: 0.75rem 1rem;
        max-width: 100%;
    }

    .nav-brand {
        font-size: 1rem;
    }

    .nav-user {
        gap: 0.5rem;
        flex-shrink: 0;
    }

    .user-name {
        font-size: 0.85rem;
        max-width: 80px;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .admin-badge {
        font-size: 0.65rem;
        padding: 0.2rem 0.5rem;
    }

    .nav-user .btn {
        font-size: 0.75rem;
        padding: 0.4rem 0.8rem;
    }

    /* Header secundario más compacto en móvil */
    .header-nav {
        top: 54px;
    }

    .header-nav-container {
        padding: 0.4rem 1rem;
    }

    .nav-links {
        gap: 0.5rem;
        flex-wrap: wrap;
        font-size: 0.8rem;
        justify-content: center;
    }

    .nav-links a {
        padding: 0.35rem 0.6rem;
    }

    /* Contenido */
    .container {
        padding: 0 1rem;
        margin: 1rem auto;
    }

    .card {
        padding: 1.25rem;
    }

    .card-title {
        font-size: 1.4rem;
    }

    /* Tablas - scroll horizontal suave */
    .table {
        font-size: 0.8rem;
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }

    .table th,
    .table td {
        padding: 0.5rem 0.3rem;
    }

    .btn {
        font-size: 0.9rem;
        padding: 0.65rem 1.2rem;
    }

    /* Paginación responsive */
    .pagination {
        gap: 0.3rem;
        margin: 1.5rem 0 0.75rem 0;
    }

    .pagination-btn {
        padding: 0.4rem 0.7rem;
        font-size: 0.85rem;
        min-width: 35px;
    }

    .pagination-info {
        font-size: 0.8rem;
    }
}