:root {
    --bg: #030f1c;
    /* Bleu marin très profond */
    --bg-card: #091a2d;
    /* Légèrement plus clair */
    --border: #132b47;
    --text: #e8f4fd;
    /* Blanc bleuté */
    --text-muted: #8bb8d4;
    /* Gris bleu clair */

    --primary: #1e90ff;
    /* Dodger blue vif */
    --primary-hover: #0073e6;

    --cyan: #00bcd4;
    --coral: #ff6b35;
    /* Orange corail pour contraster */
    --green: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;
}

:root[data-theme="light"] {
    --bg: #f8fafc;
    --bg-card: #ffffff;
    --border: #e2e8f0;
    --text: #0f172a;
    --text-muted: #64748b;

    --primary: #2563eb;
    --primary-hover: #1d4ed8;

    --cyan: #06b6d4;
    --coral: #f97316;
    --green: #16a34a;
    --danger: #dc2626;
    --warning: #d97706;
}

body {
    transition: background-color 0.3s ease, color 0.3s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    display: flex;
    min-height: 100vh;
}

/* ----- SIDEBAR ----- */
.sidebar {
    width: 260px;
    background: rgba(9, 26, 45, 0.7);
    backdrop-filter: blur(10px);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-box {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--cyan));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.2rem;
    color: #fff;
    box-shadow: 0 4px 15px rgba(30, 144, 255, 0.4);
}

.brand-name {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.nav-menu {
    padding: 20px 0;
    flex-grow: 1;
    overflow-y: auto;
}

/* Scrollbar personnalisée pour la sidebar */
.nav-menu::-webkit-scrollbar {
    width: 6px;
}

.nav-menu::-webkit-scrollbar-track {
    background: transparent;
}

.nav-menu::-webkit-scrollbar-thumb {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}

[data-theme="light"] .nav-menu::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, 0.1);
}

.nav-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    font-weight: 600;
    padding: 0 24px;
    margin-bottom: 10px;
    margin-top: 15px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    border-left: 3px solid transparent;
    transition: all 0.2s;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.03);
    color: var(--cyan);
}

.nav-link.active {
    background: rgba(30, 144, 255, 0.1);
    color: var(--primary);
    border-left-color: var(--primary);
}

.nav-icon {
    font-size: 1.1rem;
    opacity: 0.8;
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid var(--border);
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
}

[data-theme="light"] .sidebar {
    background: rgba(255, 255, 255, 0.9);
}

[data-theme="light"] .sidebar-logo {
    filter: brightness(0) !important;
    opacity: 0.8;
}

[data-theme="light"] .nav-link:hover {
    background: rgba(0, 0, 0, 0.03);
}

/* ----- MAIN CONTENT ----- */
.main-content {
    margin-left: 260px;
    flex-grow: 1;
    padding: 40px;
}

/* Login box Premium */
.login-container {
    flex-grow: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    background: radial-gradient(circle at bottom left, #051424, #030f1c);
    position: relative;
    overflow: hidden;
}

.login-container::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(30, 144, 255, 0.08) 0%, transparent 50%);
    z-index: 0;
    animation: rotate 60s linear infinite;
    pointer-events: none;
}

[data-theme="light"] .login-container {
    background: radial-gradient(circle at bottom left, #e2e8f0, #f8fafc);
}

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

    100% {
        transform: rotate(360deg);
    }
}

.login-box {
    background: rgba(9, 26, 45, 0.5);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    padding: 50px 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    z-index: 1;
    position: relative;
}

[data-theme="light"] .login-box {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

[data-theme="light"] .login-box img {
    filter: invert(1) drop-shadow(0 4px 6px rgba(0, 0, 0, 0.1)) !important;
}

.login-input {
    width: 100%;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    color: var(--text);
    margin-bottom: 25px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
}

.login-input:focus {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30, 144, 255, 0.2);
    outline: none;
}

/* Utilities */
.page-header {
    margin-bottom: 30px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.page-header h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.page-header p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 18px;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 15px rgba(30, 144, 255, 0.3);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* KPI Cards */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.kpi-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 22px 20px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    transition: all 0.2s;
    position: relative;
    overflow: hidden;
}

.kpi-card:hover {
    background: rgba(255, 255, 255, 0.07);
    transform: translateY(-2px);
}

.kpi-icon {
    width: 46px;
    height: 46px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

[data-theme="light"] .kpi-icon {
    background: rgba(0, 0, 0, 0.03);
}

.kpi-icon.cyan {
    background: rgba(0, 188, 212, 0.15);
}

.kpi-icon.coral {
    background: rgba(255, 107, 53, 0.15);
}

.kpi-icon.green {
    background: rgba(34, 197, 94, 0.15);
}

.kpi-icon.blue {
    background: rgba(59, 130, 246, 0.15);
}

.kpi-body {
    flex: 1;
}

.kpi-label {
    font-size: 0.72rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    font-weight: 600;
    margin-bottom: 4px;
}

.kpi-value {
    font-size: 1.65rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1.1;
}

.kpi-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.kpi-trend {
    font-size: 0.72rem;
    font-weight: 600;
}

.kpi-trend.up {
    color: var(--green);
}

.kpi-trend.down {
    color: var(--danger);
}

/* Charts */
.charts-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 16px;
    margin-bottom: 28px;
}

@media (max-width: 900px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
}

.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 22px;
    display: flex;
    flex-direction: column;
}

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

.chart-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text);
}

.chart-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.chart-canvas-wrap {
    position: relative;
    flex-grow: 1;
    min-height: 250px;
}

/* Progress Bars (Stock) */
.progress-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 6px;
    overflow: hidden;
    width: 100%;
}

.progress-fill {
    height: 100%;
    border-radius: 6px;
    background: linear-gradient(90deg, var(--cyan), var(--primary));
    transition: width 0.6s ease;
}

.progress-fill.coral {
    background: linear-gradient(90deg, var(--coral), var(--danger));
}

.stock-ok {
    color: var(--green);
    font-weight: 600;
}

.stock-low {
    color: var(--warning);
    font-weight: 600;
}

.stock-out {
    color: var(--danger);
    font-weight: 600;
}

.table-card {
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border);
    overflow: hidden;
    margin-bottom: 20px;
}

.table-header {
    padding: 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.table-title {
    font-weight: 600;
    font-size: 1.1rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

th {
    padding: 15px 20px;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    font-weight: 600;
}

td {
    padding: 15px 20px;
    border-bottom: 1px solid rgba(19, 43, 71, 0.5);
    font-size: 0.95rem;
}

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

[data-theme="light"] tbody tr:hover {
    background: rgba(0, 0, 0, 0.02);
}

.badge {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-success {
    background: rgba(34, 197, 94, 0.1);
    color: var(--green);
}

.badge-info {
    background: rgba(0, 188, 212, 0.1);
    color: var(--cyan);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.badge-cyan {
    background: rgba(0, 188, 212, 0.1);
    color: #00bcd4;
}

.badge-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.fw-600 {
    font-weight: 600;
}

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

.text-cyan {
    color: var(--cyan);
}

.text-success {
    color: var(--green);
}

.text-danger {
    color: var(--danger);
}

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

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

.text-sm {
    font-size: 0.85rem;
}

/* Animations */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-up {
    animation: fadeUp 0.4s ease forwards;
}

/* Filters & Forms */
.filters-bar {
    display: flex;
    gap: 15px;
    background: var(--bg-card);
    padding: 15px 20px;
    border-radius: 10px;
    border: 1px solid var(--border);
    margin-bottom: 20px;
    align-items: center;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.filter-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 600;
}

.quick-btns {
    display: flex;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    padding: 3px;
    gap: 2px;
}

[data-theme="light"] .quick-btns {
    background: rgba(0, 0, 0, 0.05);
}

.quick-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    font-weight: 500;
}

.quick-btn:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .quick-btn:hover {
    color: var(--text);
    background: rgba(0, 0, 0, 0.05);
}

.quick-btn.active {
    background: var(--primary);
    color: #ffffff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

[data-theme="light"] .quick-btn.active {
    background: var(--primary);
    color: #ffffff;
    box-shadow: 0 2px 4px rgba(37, 99, 235, 0.3);
}

.form-control {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s;
}

.form-control:focus {
    border-color: var(--primary);
}

select.form-control optgroup,
select.form-control option {
    background-color: var(--bg-card);
    color: var(--text);
}
select.form-control optgroup {
    font-weight: 600;
    color: var(--text-muted);
}

[data-theme="light"] .form-control,
[data-theme="light"] .login-input {
    background: rgba(0, 0, 0, 0.02);
    border: 1px solid var(--border);
    color: var(--text);
}

[data-theme="light"] .form-control:focus,
[data-theme="light"] .login-input:focus {
    background: #fff;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}