:root {
    --bg-primary: #e0e5ec;
    --bg-secondary: #f5f7fa;
    --bg-card: #e8ecf2;
    --text-primary: #2d4059;
    --text-secondary: #6c7a8d;
    --text-muted: #9ba4b5;
    --shadow-light: #ffffff;
    --shadow-dark: #a3b1c6;
    --primary: #5b6abf;
    --primary-light: #7b8cdb;
    --primary-dark: #3d4a9e;
    --success: #2ecc71;
    --warning: #f39c12;
    --danger: #e74c3c;
    --info: #3498db;
    --border-radius: 16px;
    --border-radius-sm: 10px;
    --border-radius-lg: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Modo oscuro (Neumorphism dark) ===== */
[data-theme="dark"] {
    --bg-primary: #202430;
    --bg-secondary: #262b39;
    --bg-card: #262b39;
    --text-primary: #e6ebf5;
    --text-secondary: #b3bccb;
    --text-muted: #8792a6;
    --shadow-light: #2f3546;
    --shadow-dark: #14171f;
    --primary: #8b9bf0;
    --primary-light: #a6b3f5;
    --primary-dark: #6b7ad8;
    --success: #34d17f;
    --warning: #f5ab35;
    --danger: #f16a5c;
    --info: #4dabe8;
}

[data-theme="dark"] body {
    background: var(--bg-primary);
    color: var(--text-primary);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

.neo-card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    box-shadow:
        9px 9px 18px var(--shadow-dark),
        -9px -9px 18px var(--shadow-light);
    padding: 1.5rem;
    transition: var(--transition);
}

.neo-card:hover {
    box-shadow:
        6px 6px 12px var(--shadow-dark),
        -6px -6px 12px var(--shadow-light);
    transform: translateY(-2px);
}

.neo-card-inset {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    box-shadow:
        inset 5px 5px 10px var(--shadow-dark),
        inset -5px -5px 10px var(--shadow-light);
    padding: 1.5rem;
}

.neo-button {
    background: var(--bg-card);
    border: none;
    border-radius: var(--border-radius-sm);
    box-shadow:
        5px 5px 10px var(--shadow-dark),
        -5px -5px 10px var(--shadow-light);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.neo-button:hover {
    box-shadow:
        3px 3px 6px var(--shadow-dark),
        -3px -3px 6px var(--shadow-light);
    transform: translateY(-1px);
}

.neo-button:active {
    box-shadow:
        inset 3px 3px 6px var(--shadow-dark),
        inset -3px -3px 6px var(--shadow-light);
    transform: translateY(0);
}

.neo-button-primary {
    background: linear-gradient(145deg, #5b6abf, #4a58a8);
    color: white;
    box-shadow:
        5px 5px 10px var(--shadow-dark),
        -5px -5px 10px var(--shadow-light);
}

.neo-button-primary:hover {
    background: linear-gradient(145deg, #6b7ad0, #5b6abf);
    color: white;
}

.neo-button-success {
    background: linear-gradient(145deg, #2ecc71, #27ae60);
    color: white;
}

.neo-button-danger {
    background: linear-gradient(145deg, #e74c3c, #c0392b);
    color: white;
}

.neo-button-warning {
    background: linear-gradient(145deg, #f39c12, #e67e22);
    color: white;
}

.neo-input {
    background: var(--bg-card);
    border: none;
    border-radius: var(--border-radius-sm);
    box-shadow:
        inset 3px 3px 6px var(--shadow-dark),
        inset -3px -3px 6px var(--shadow-light);
    color: var(--text-primary);
    font-size: 0.95rem;
    padding: 0.85rem 1.2rem;
    transition: var(--transition);
    width: 100%;
    outline: none;
}

.neo-input:focus {
    box-shadow:
        inset 4px 4px 8px var(--shadow-dark),
        inset -4px -4px 8px var(--shadow-light),
        0 0 0 2px var(--primary-light);
}

.neo-input::placeholder {
    color: var(--text-muted);
}

.neo-select {
    background: var(--bg-card);
    border: none;
    border-radius: var(--border-radius-sm);
    box-shadow:
        inset 3px 3px 6px var(--shadow-dark),
        inset -3px -3px 6px var(--shadow-light);
    color: var(--text-primary);
    font-size: 0.95rem;
    padding: 0.85rem 1.2rem;
    width: 100%;
    outline: none;
    appearance: none;
    cursor: pointer;
}

.neo-textarea {
    background: var(--bg-card);
    border: none;
    border-radius: var(--border-radius-sm);
    box-shadow:
        inset 3px 3px 6px var(--shadow-dark),
        inset -3px -3px 6px var(--shadow-light);
    color: var(--text-primary);
    font-size: 0.95rem;
    padding: 0.85rem 1.2rem;
    width: 100%;
    min-height: 100px;
    outline: none;
    resize: vertical;
}

.neo-badge {
    background: var(--bg-card);
    border-radius: 50px;
    box-shadow:
        3px 3px 6px var(--shadow-dark),
        -3px -3px 6px var(--shadow-light);
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.neo-badge-primary {
    background: linear-gradient(145deg, #5b6abf, #4a58a8);
    color: white;
}

.neo-badge-success {
    background: linear-gradient(145deg, #2ecc71, #27ae60);
    color: white;
}

.neo-badge-danger {
    background: linear-gradient(145deg, #e74c3c, #c0392b);
    color: white;
}

.neo-badge-warning {
    background: linear-gradient(145deg, #f39c12, #e67e22);
    color: white;
}

.neo-badge-info {
    background: linear-gradient(145deg, #3498db, #2980b9);
    color: white;
}

.neo-nav {
    background: var(--bg-card);
    box-shadow:
        0 5px 10px var(--shadow-dark),
        0 -5px 10px var(--shadow-light);
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.neo-nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    font-weight: 500;
}

.neo-nav-link:hover,
.neo-nav-link.active {
    color: var(--primary);
    box-shadow:
        inset 3px 3px 6px var(--shadow-dark),
        inset -3px -3px 6px var(--shadow-light);
}

.neo-sidebar {
    background: var(--bg-card);
    box-shadow:
        5px 0 10px var(--shadow-dark);
    padding: 1rem 0;
    min-height: calc(100vh - 70px);
}

.neo-sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.85rem 1.5rem;
    margin: 0.25rem 0.75rem;
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    font-weight: 500;
}

.neo-sidebar-link:hover {
    color: var(--primary);
    background: var(--bg-primary);
    box-shadow:
        3px 3px 6px var(--shadow-dark),
        -3px -3px 6px var(--shadow-light);
}

.neo-sidebar-link.active {
    color: var(--primary);
    background: var(--bg-primary);
    box-shadow:
        inset 3px 3px 6px var(--shadow-dark),
        inset -3px -3px 6px var(--shadow-light);
}

.neo-stat {
    text-align: center;
    padding: 1.5rem;
}

.neo-stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.75rem;
    font-size: 1.5rem;
    background: var(--bg-card);
    box-shadow:
        6px 6px 12px var(--shadow-dark),
        -6px -6px 12px var(--shadow-light);
}

.neo-stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.neo-stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-top: 0.25rem;
}

.neo-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 4px;
}

.neo-table th {
    background: var(--bg-card);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 1rem 1.25rem;
    text-align: left;
}

.neo-table td {
    background: var(--bg-card);
    padding: 1rem 1.25rem;
    color: var(--text-primary);
    box-shadow:
        2px 2px 5px var(--shadow-dark),
        -2px -2px 5px var(--shadow-light);
}

.neo-table tr:hover td {
    box-shadow:
        4px 4px 8px var(--shadow-dark),
        -4px -4px 8px var(--shadow-light);
}

.neo-table tr td:first-child {
    border-radius: var(--border-radius-sm) 0 0 var(--border-radius-sm);
}

.neo-table tr td:last-child {
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
}

.neo-alert {
    border-radius: var(--border-radius-sm);
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.neo-alert-success {
    background: linear-gradient(145deg, #d4edda, #c3e6cb);
    color: #155724;
    box-shadow: 3px 3px 6px var(--shadow-dark);
}

.neo-alert-danger {
    background: linear-gradient(145deg, #f8d7da, #f5c6cb);
    color: #721c24;
    box-shadow: 3px 3px 6px var(--shadow-dark);
}

.neo-alert-info {
    background: linear-gradient(145deg, #d1ecf1, #bee5eb);
    color: #0c5460;
    box-shadow: 3px 3px 6px var(--shadow-dark);
}

.neo-alert-warning {
    background: linear-gradient(145deg, #fff3cd, #ffeaa7);
    color: #856404;
    box-shadow: 3px 3px 6px var(--shadow-dark);
}

.neo-progress {
    background: var(--bg-card);
    border-radius: 50px;
    box-shadow:
        inset 3px 3px 6px var(--shadow-dark),
        inset -3px -3px 6px var(--shadow-light);
    height: 10px;
    overflow: hidden;
}

.neo-progress-bar {
    height: 100%;
    border-radius: 50px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    transition: width 0.6s ease;
    box-shadow: 0 2px 4px rgba(91, 106, 191, 0.3);
}

.neo-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-card);
    box-shadow:
        3px 3px 6px var(--shadow-dark),
        -3px -3px 6px var(--shadow-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--primary);
    font-size: 1.1rem;
    overflow: hidden;
}

.neo-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.neo-avatar-lg {
    width: 64px;
    height: 64px;
    font-size: 1.5rem;
}

.neo-avatar-xl {
    width: 96px;
    height: 96px;
    font-size: 2rem;
}

.neo-tabs {
    display: flex;
    gap: 0.5rem;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 0.5rem;
    box-shadow:
        inset 3px 3px 6px var(--shadow-dark),
        inset -3px -3px 6px var(--shadow-light);
}

.neo-tab {
    padding: 0.6rem 1.25rem;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
    border: none;
    background: transparent;
    font-size: 0.9rem;
}

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

.neo-tab.active {
    background: var(--bg-card);
    box-shadow:
        3px 3px 6px var(--shadow-dark),
        -3px -3px 6px var(--shadow-light);
    color: var(--primary);
}

.neo-divider {
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent,
        var(--shadow-dark),
        transparent
    );
    margin: 1.5rem 0;
}

.neo-pagination {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.neo-page-item {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-sm);
    background: var(--bg-card);
    box-shadow:
        3px 3px 6px var(--shadow-dark),
        -3px -3px 6px var(--shadow-light);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.neo-page-item:hover {
    color: var(--primary);
    transform: translateY(-1px);
}

.neo-page-item.active {
    background: linear-gradient(145deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 3px 3px 6px var(--shadow-dark);
}

.neo-modal {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    box-shadow:
        20px 20px 40px var(--shadow-dark),
        -20px -20px 40px var(--shadow-light);
    padding: 2rem;
    max-width: 500px;
    width: 90%;
}

.neo-modal-overlay {
    background: rgba(45, 64, 89, 0.4);
    backdrop-filter: blur(4px);
}

.neo-toast {
    background: var(--bg-card);
    border-radius: var(--border-radius-sm);
    box-shadow:
        5px 5px 10px var(--shadow-dark),
        -5px -5px 10px var(--shadow-light);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.neo-checkbox {
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 6px;
    background: var(--bg-card);
    box-shadow:
        inset 2px 2px 4px var(--shadow-dark),
        inset -2px -2px 4px var(--shadow-light);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.neo-checkbox:checked {
    background: linear-gradient(145deg, var(--primary), var(--primary-dark));
    box-shadow: 2px 2px 4px var(--shadow-dark);
}

.neo-checkbox:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 12px;
}

.neo-radio {
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--bg-card);
    box-shadow:
        inset 2px 2px 4px var(--shadow-dark),
        inset -2px -2px 4px var(--shadow-light);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.neo-radio:checked {
    background: linear-gradient(145deg, var(--primary), var(--primary-dark));
    box-shadow: 2px 2px 4px var(--shadow-dark);
}

.neo-radio:checked::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: white;
}

.neo-toggle {
    appearance: none;
    width: 44px;
    height: 24px;
    border-radius: 12px;
    background: var(--bg-card);
    box-shadow:
        inset 2px 2px 4px var(--shadow-dark),
        inset -2px -2px 4px var(--shadow-light);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.neo-toggle::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--bg-card);
    box-shadow:
        2px 2px 4px var(--shadow-dark),
        -2px -2px 4px var(--shadow-light);
    transition: var(--transition);
}

.neo-toggle:checked {
    background: linear-gradient(145deg, var(--primary), var(--primary-dark));
}

.neo-toggle:checked::after {
    transform: translateX(20px);
    box-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.grid {
    display: grid;
    gap: 1.5rem;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.justify-center {
    justify-content: center;
}

.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }

.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mr-2 { margin-right: 0.5rem; }
.ml-2 { margin-left: 0.5rem; }

.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-sm { font-size: 0.85rem; }
.text-lg { font-size: 1.15rem; }
.text-xl { font-size: 1.5rem; }
.text-2xl { font-size: 2rem; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.text-muted { color: var(--text-muted); }
.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.w-full { width: 100%; }

@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .neo-nav { padding: 1rem; }
    .container { padding: 0 0.75rem; }
    :root { --border-radius: 12px; }
}