:root {
    /* Colors — Matching landing page */
    --ink: #0A0A0F;
    --ink-light: #12121A;
    --ink-mid: #1A1A2E;
    --signal: #FF2D7B;
    --signal-dark: #E6196B;
    --electric: #9D4EDD;
    --mist: #8A8A9A;
    --paper: #FAFAFA;
    --white: #FFFFFF;
    
    /* Legacy aliases */
    --black: var(--ink);
    --black-light: var(--ink-light);
    --sidebar-bg: var(--ink-light);
    --pink: var(--signal);
    --purple: var(--electric);
    --gray: var(--mist);
    --gray-dark: var(--ink-mid);
    --gray-light: #1E1E2A;
    --green: #00D68F;
    --orange: #FF9F43;
    --red: #FF6B6B;
    
    /* Gradients */
    --gradient-signal: linear-gradient(135deg, #FF2D7B, #9D4EDD);
    --gradient-dark: linear-gradient(180deg, var(--ink), var(--ink-light));
    
    /* Typography */
    --font-display: 'Outfit', 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --font-heading: var(--font-display);
    
    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --transition: all 0.3s var(--ease-out);
    
    /* Shadows */
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 20px rgba(255, 45, 123, 0.15);
}

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

body {
    font-family: var(--font-body);
    background: var(--ink);
    color: var(--white);
    -webkit-font-smoothing: antialiased;
}

.app {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--ink-light);
    border-right: 1px solid rgba(255,255,255,0.04);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
    transition: transform 0.4s var(--ease-out);
}

.sidebar-header {
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.04);
}

.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo-icon {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    color: var(--signal);
    background: var(--ink);
    padding: 10px 14px;
    border-radius: 10px;
    border: 1px solid rgba(255, 45, 123, 0.2);
}
.logo-text { 
    font-family: var(--font-display); 
    font-weight: 700; 
    letter-spacing: 0.15em;
    font-size: 1.1rem;
}

.badge-admin {
    background: var(--gradient-signal);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 10px;
    color: var(--mist);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-item:hover { 
    background: rgba(255, 255, 255, 0.04); 
    color: var(--white); 
}

.nav-item.active { 
    background: rgba(255, 45, 123, 0.1); 
    color: var(--signal);
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 20px;
    background: var(--gradient-signal);
    border-radius: 0 4px 4px 0;
}

.nav-item i { width: 20px; text-align: center; font-size: 1rem; }

.sidebar-footer {
    padding: 12px;
    border-top: 1px solid rgba(255,255,255,0.04);
    margin-top: auto;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    margin-bottom: 8px;
    background: rgba(255,255,255,0.03);
    border-radius: 8px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: var(--gradient-signal);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.user-details {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.user-role {
    font-size: 0.75rem;
    color: var(--gray);
}

/* Main */
.main {
    flex: 1;
    margin-left: 260px;
    min-height: 100vh;
}

.topbar {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 16px 32px;
    background: var(--sidebar-bg);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    position: sticky;
    top: 0;
    z-index: 50;
}

.btn-menu {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.25rem;
    cursor: pointer;
}

.page-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    flex: 1;
}

.date { color: var(--gray); font-size: 0.9rem; }

.content { padding: 32px; }

/* Sections */
.section { display: none; }
.section.active { display: block; animation: fadeIn 0.3s ease; }

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

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.section-header h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--ink-light);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    border: 1px solid rgba(255,255,255,0.04);
    transition: var(--transition);
}

.stat-card:hover {
    border-color: rgba(255, 45, 123, 0.15);
    box-shadow: var(--shadow-glow);
}

.stat-card.warning { 
    border-color: rgba(255, 159, 67, 0.2);
    background: linear-gradient(135deg, var(--ink-light), rgba(255, 159, 67, 0.03));
}

.stat-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.stat-icon.pink { background: rgba(255, 45, 123, 0.1); color: var(--signal); }
.stat-icon.purple { background: rgba(157, 78, 221, 0.1); color: var(--electric); }
.stat-icon.green { background: rgba(0, 214, 143, 0.1); color: var(--green); }
.stat-icon.orange { background: rgba(255, 159, 67, 0.1); color: var(--orange); }

.stat-value {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--gray);
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

/* Cards */
.card {
    background: var(--ink-light);
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.04);
    overflow: hidden;
    transition: var(--transition);
}

.card:hover {
    border-color: rgba(255,255,255,0.08);
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid rgba(255,255,255,0.04);
}

.card-header h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.card-body { padding: 24px; }

/* Tables */
.table-responsive { overflow-x: auto; }

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

.table th, .table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid rgba(255,255,255,0.04);
}

.table th {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--mist);
    font-weight: 600;
    font-family: var(--font-body);
}

.table td { 
    font-size: 0.9rem;
    color: var(--paper);
}

.table tr { 
    transition: var(--transition);
}

.table tr:hover { 
    background: rgba(255, 255, 255, 0.02);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 10px;
    border: none;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-signal);
    color: var(--white);
    box-shadow: 0 2px 12px rgba(255, 45, 123, 0.25);
}

.btn-primary:hover { 
    transform: translateY(-1px); 
    box-shadow: 0 4px 20px rgba(255, 45, 123, 0.35); 
}

.btn-secondary {
    background: var(--gray-light);
    color: var(--white);
    border: 1px solid rgba(255,255,255,0.06);
}

.btn-secondary:hover { 
    background: var(--ink-mid);
    border-color: rgba(255,255,255,0.1);
}

.btn-sm { padding: 6px 12px; font-size: 0.8rem; }

.btn-icon {
    background: none;
    border: none;
    color: var(--gray);
    cursor: pointer;
    padding: 6px;
    transition: color 0.2s;
}

.btn-icon:hover { color: var(--signal); }
.btn-icon.danger:hover { color: var(--red); }

/* Filters */
.filters {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    flex-wrap: wrap;
    align-items: center;
}

.filters input, .filters select {
    padding: 10px 16px;
    background: var(--black-light);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    color: var(--white);
    font-size: 0.9rem;
    font-family: var(--font-body);
}

.filters input:focus, .filters select:focus {
    outline: none;
    border-color: var(--signal);
}

.filters label { color: var(--gray); font-size: 0.9rem; }

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.modal-overlay.active { opacity: 1; visibility: visible; }

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    background: var(--black-light);
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.1);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    z-index: 201;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.modal.active { opacity: 1; visibility: visible; transform: translate(-50%, -50%) scale(1); }
.modal-lg { max-width: 700px; }

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.modal-header h3 { font-family: var(--font-display); }

.btn-close {
    background: none;
    border: none;
    color: var(--gray);
    font-size: 1.2rem;
    cursor: pointer;
}

.btn-close:hover { color: var(--white); }

.modal form { padding: 24px; }

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group { margin-bottom: 16px; }
.form-group.full { grid-column: span 2; }

.form-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--gray);
    margin-bottom: 6px;
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--black);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    color: var(--white);
    font-size: 0.95rem;
    font-family: var(--font-body);
}

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

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.05);
    margin-top: 16px;
}

/* Alerts */
.alert {
    padding: 16px 20px;
    border-radius: 8px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
}

.alert.warning {
    background: rgba(255,152,0,0.1);
    border: 1px solid rgba(255,152,0,0.3);
    color: var(--orange);
}

.alert.danger {
    background: rgba(255,68,68,0.1);
    border: 1px solid rgba(255,68,68,0.3);
    color: var(--red);
}

/* Badges */
.badge {
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge.success { background: rgba(0,200,83,0.15); color: var(--green); }
.badge.warning { background: rgba(255,152,0,0.15); color: var(--orange); }
.badge.danger { background: rgba(255,68,68,0.15); color: var(--red); }
.badge.info { background: rgba(157,78,221,0.15); color: var(--purple); }

/* Stock Bar */
.stock-bar {
    width: 100%;
    height: 8px;
    background: var(--gray-dark);
    border-radius: 4px;
    overflow: hidden;
}

.stock-bar-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.3s;
}

.stock-bar-fill.ok { background: var(--green); }
.stock-bar-fill.low { background: var(--orange); }
.stock-bar-fill.critical { background: var(--red); }

/* Venta Items */
.venta-items { margin: 24px 0; }
.venta-items h4 { margin-bottom: 12px; font-family: var(--font-display); }

.venta-item-row {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
    align-items: end;
}

.venta-item-row select, .venta-item-row input {
    padding: 10px 12px;
    background: var(--black);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    color: var(--white);
    font-size: 0.9rem;
}

.venta-item-row select { flex: 2; }
.venta-item-row input { flex: 1; }

.venta-total {
    text-align: right;
    font-family: var(--font-display);
    font-size: 1.5rem;
    padding: 20px 0;
    border-top: 1px solid rgba(255,255,255,0.05);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--gradient-signal);
    color: var(--white);
    padding: 16px 24px;
    border-radius: 8px;
    font-weight: 500;
    z-index: 300;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s;
}

.toast.show { transform: translateY(0); opacity: 1; }

/* Chart */
.chart-container { min-height: 200px; }

.chart-wrapper {
    background: var(--ink);
    border-radius: 12px;
    padding: 24px;
}

.chart-summary {
    display: flex;
    gap: 32px;
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.04);
}

.chart-stat {
    display: flex;
    flex-direction: column;
}

.chart-stat-value {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--signal);
}

.chart-stat-label {
    font-size: 0.8rem;
    color: var(--mist);
}

.bar-chart {
    display: flex;
    align-items: flex-end;
    gap: 6px;
    height: 200px;
    padding-top: 30px;
}

.bar {
    flex: 1;
    background: var(--gradient-signal);
    border-radius: 6px 6px 0 0;
    min-height: 4px;
    position: relative;
    transition: var(--transition);
    animation: barGrow 0.6s var(--ease-out) forwards;
    opacity: 0;
    transform-origin: bottom;
}

@keyframes barGrow {
    from { opacity: 0; transform: scaleY(0); }
    to { opacity: 1; transform: scaleY(1); }
}

.bar:hover {
    filter: brightness(1.2);
    transform: scaleY(1.05);
}

.bar-max {
    background: var(--signal);
    box-shadow: 0 0 12px rgba(255, 45, 123, 0.4);
}

.bar-label {
    position: absolute;
    bottom: -24px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.7rem;
    color: var(--mist);
    white-space: nowrap;
}

.bar-value {
    position: absolute;
    top: -22px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--white);
    white-space: nowrap;
    opacity: 0;
    transition: var(--transition);
}

.bar:hover .bar-value {
    opacity: 1;
}

/* Import Modal */
.roles-legend {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 24px;
    padding: 16px;
    background: var(--black-light);
    border-radius: 8px;
}

.role-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--gray);
}

.importar-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.importar-info h4 {
    font-family: var(--font-display);
    margin-bottom: 12px;
}

.importar-info p {
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.importar-info ul {
    list-style: none;
    margin-bottom: 16px;
}

.importar-info li {
    font-size: 0.85rem;
    padding: 4px 0;
    color: var(--gray);
}

.importar-info li strong {
    color: var(--signal);
}

.upload-zone {
    border: 2px dashed rgba(255,255,255,0.15);
    border-radius: 12px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
}

.upload-zone:hover {
    border-color: var(--signal);
    background: rgba(255,45,123,0.05);
}

.upload-zone i {
    font-size: 3rem;
    color: var(--gray-dark);
    margin-bottom: 16px;
}

.upload-zone p {
    color: var(--gray);
    margin-bottom: 8px;
}

.upload-hint {
    font-size: 0.8rem !important;
    color: var(--gray-dark) !important;
}

.upload-preview {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: rgba(255,45,123,0.1);
    border-radius: 8px;
    border: 1px solid rgba(255,45,123,0.3);
}

.upload-preview i {
    font-size: 1.5rem;
    color: var(--green);
}

.upload-preview span {
    flex: 1;
    font-weight: 500;
}

.importar-resultado {
    margin-top: 20px;
    padding: 16px;
    border-radius: 8px;
}

.importar-resultado.success {
    background: rgba(0,200,83,0.1);
    border: 1px solid rgba(0,200,83,0.3);
}

.importar-resultado.error {
    background: rgba(255,68,68,0.1);
    border: 1px solid rgba(255,68,68,0.3);
}

.importar-resultado h4 {
    margin-bottom: 8px;
}

.importar-resultado ul {
    list-style: none;
    font-size: 0.85rem;
}

.importar-resultado li {
    padding: 4px 0;
    color: var(--gray);
}

/* Responsive */
@media (max-width: 1024px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .grid-2 { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.active { transform: translateX(0); }
    
    .main { margin-left: 0; }
    .btn-menu { display: block; }
    .content { padding: 16px; }
    .stats-grid { grid-template-columns: 1fr; }
    .form-grid { grid-template-columns: 1fr; }
    .form-group.full { grid-column: span 1; }
}
/* Image Upload */
.image-upload-area {
    border: 2px dashed rgba(255,255,255,0.15);
    border-radius: 12px;
    padding: 32px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.image-upload-area:hover {
    border-color: var(--signal);
    background: rgba(255, 45, 123, 0.05);
}

.image-upload-area i {
    font-size: 2rem;
    color: var(--mist);
    margin-bottom: 12px;
}

.image-upload-area span {
    display: block;
    color: var(--mist);
    margin-bottom: 4px;
}

.image-upload-area small {
    color: var(--gray-dark);
    font-size: 0.8rem;
}

.image-preview {
    position: relative;
    display: inline-block;
    margin-top: 12px;
}

.image-preview img {
    max-width: 200px;
    max-height: 150px;
    border-radius: 8px;
    object-fit: cover;
}

.btn-remove-image {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--signal);
    border: none;
    color: white;
    cursor: pointer;
    font-size: 0.7rem;
}