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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border: #e2e8f0;
    --shadow: rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: var(--bg-main);
    border-radius: 16px;
    box-shadow: 0 20px 60px var(--shadow);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

header p {
    font-size: 1rem;
    opacity: 0.9;
}

/* Pestañas */
.tabs {
    display: flex;
    background: var(--bg-card);
    border-bottom: 2px solid var(--border);
}

.tab-button {
    flex: 1;
    padding: 15px 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    position: relative;
}

.tab-button:hover {
    background: var(--bg-main);
    color: var(--primary);
}

.tab-button.active {
    color: var(--primary);
}

.tab-button.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary);
}

.tab-content {
    display: none;
    padding: 30px;
    animation: fadeIn 0.3s ease;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Notificaciones */
#notifications {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    max-width: 400px;
}

.notification {
    padding: 15px 20px;
    margin-bottom: 10px;
    border-radius: 8px;
    color: white;
    box-shadow: 0 4px 12px var(--shadow);
    animation: slideIn 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.notification.success {
    background: var(--success);
}

.notification.error {
    background: var(--danger);
}

.notification.info {
    background: var(--info);
}

.notification .close-btn {
    background: none;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    margin-left: 10px;
}

/* Secciones */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.section-header h2 {
    font-size: 1.8rem;
    color: var(--text-primary);
}

/* Botones */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

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

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

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

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

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

.btn-secondary:hover {
    background: #475569;
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.9rem;
    background: var(--info);
    color: white;
}

.btn-small:hover {
    background: #2563eb;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: #9ca3af;
}

.btn:disabled:hover {
    transform: none;
    box-shadow: none;
}

/* Formularios */
.form-container {
    background: var(--bg-card);
    padding: 25px;
    border-radius: 12px;
    margin-bottom: 25px;
    box-shadow: 0 2px 8px var(--shadow);
}

.form-container h3 {
    margin-bottom: 20px;
    color: var(--primary);
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

/* Barra de búsqueda */
.search-bar {
    margin-bottom: 20px;
}

.search-bar input {
    width: 100%;
    padding: 12px 20px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
}

.search-bar input:focus {
    outline: none;
    border-color: var(--primary);
}

/* Lista de elementos */
.list-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.card {
    background: var(--bg-card);
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 8px var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px var(--shadow);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 15px;
}

.card-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.card-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 5px;
}

.card-body {
    margin: 15px 0;
}

.card-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 0.95rem;
}

.card-info span:first-child {
    color: var(--text-secondary);
}

.card-info span:last-child {
    font-weight: 600;
    color: var(--text-primary);
}

.card-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.card-actions button {
    flex: 1;
    padding: 8px 12px;
    font-size: 0.85rem;
}

/* Stock badges */
.stock-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.stock-high {
    background: #d1fae5;
    color: #065f46;
}

.stock-medium {
    background: #fed7aa;
    color: #92400e;
}

.stock-low {
    background: #fecaca;
    color: #991b1b;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--bg-card);
    padding: 30px;
    border-radius: 16px;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 20px 60px var(--shadow);
}

.modal .close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.3s ease;
}

.modal .close:hover {
    color: var(--danger);
}

/* Abalorios de figura */
.abalorio-item {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
    align-items: center;
}

.abalorio-item select,
.abalorio-item input {
    flex: 1;
}

.abalorio-item button {
    padding: 8px 12px;
    background: var(--danger);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

.abalorio-item button:hover {
    background: #dc2626;
}

/* Loading */
.loading {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px;
    font-size: 1.1rem;
}

/* Responsive */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    header h1 {
        font-size: 2rem;
    }

    .list-container {
        grid-template-columns: 1fr;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .tabs {
        flex-direction: column;
    }

    .modal-content {
        max-width: 95%;
        padding: 20px;
    }
}