:root {
    --sidebar-width: 250px;
    --primary: #f59e0b;
    --primary-dark: #d97706;
    --sidebar-bg: #1a1a2e;
    --sidebar-text: #e2e8f0;
    --sidebar-active: rgba(245, 158, 11, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #f3f4f6;
    margin: 0;
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    overflow-y: auto;
    z-index: 100;
    transition: transform 0.3s;
}

.sidebar-brand {
    padding: 20px;
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-brand span {
    color: var(--primary);
}

.sidebar-section {
    padding: 15px 0 5px 20px;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #64748b;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    color: var(--sidebar-text);
    text-decoration: none;
    font-size: 0.9rem;
    transition: background 0.2s;
}

.sidebar-nav a:hover {
    background: rgba(255,255,255,0.05);
}

.sidebar-nav a.active {
    background: var(--sidebar-active);
    color: var(--primary);
    border-right: 3px solid var(--primary);
}

.sidebar-nav a i {
    width: 20px;
    text-align: center;
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    padding: 24px 32px;
    min-height: 100vh;
}

/* Page Header */
.page-header {
    margin-bottom: 24px;
}

.page-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 4px;
    color: #111827;
}

.page-header p {
    color: #6b7280;
    margin: 0;
}

/* Cards */
.stat-card {
    background: #fff;
    border-radius: 12px;
    padding: 20px 24px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.stat-card .label {
    font-size: 0.85rem;
    color: #6b7280;
    margin-bottom: 4px;
}

.stat-card .value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #111827;
}

.stat-card .sub {
    font-size: 0.8rem;
    color: #9ca3af;
}

/* Date Filter Bar */
.filter-bar {
    background: #fff;
    border-radius: 12px;
    padding: 16px 24px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.filter-bar label {
    font-size: 0.85rem;
    color: #6b7280;
    margin-bottom: 2px;
    display: block;
}

.filter-bar input[type="date"] {
    border: 1px solid #d1d5db;
    border-radius: 6px;
    padding: 6px 10px;
    font-size: 0.9rem;
}

.quarter-btns {
    display: flex;
    gap: 6px;
    margin-left: auto;
}

.quarter-btns .btn {
    font-size: 0.8rem;
    padding: 4px 12px;
}

/* Tabs */
.nav-tabs .nav-link {
    color: #6b7280;
    font-weight: 500;
}

.nav-tabs .nav-link.active {
    color: #111827;
    font-weight: 600;
}

/* Table */
.table-container {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
    overflow: hidden;
}

.table-container .table {
    margin: 0;
}

.table-container .table th {
    background: #f9fafb;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #6b7280;
    border-bottom: 2px solid #e5e7eb;
    padding: 10px 16px;
}

.table-container .table td {
    padding: 12px 16px;
    vertical-align: middle;
    font-size: 0.9rem;
}

/* Badge */
.company-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* Category color dot */
.cat-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 6px;
}

/* Summary cards row */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

/* Loading spinner */
.loading {
    text-align: center;
    padding: 40px;
    color: #9ca3af;
}

.loading::after {
    content: '';
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid #e5e7eb;
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin-left: 8px;
    vertical-align: middle;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Login page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

.login-card {
    background: #fff;
    border-radius: 16px;
    padding: 40px;
    width: 400px;
    max-width: 90%;
    box-shadow: 0 25px 50px rgba(0,0,0,0.25);
}

.login-card h1 {
    font-size: 1.5rem;
    text-align: center;
    margin-bottom: 8px;
}

.login-card .subtitle {
    text-align: center;
    color: #6b7280;
    margin-bottom: 24px;
}

/* Toast */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
        padding: 16px;
    }
    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }
    .quarter-btns {
        margin-left: 0;
    }
}