:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --sidebar-bg: #1e2a3a;
    --sidebar-hover: #2d3f54;
    --body-bg: #f1f5f9;
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    background: var(--body-bg);
    color: #1f2937;
    margin: 0;
}

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
}

.login-card {
    background: #fff;
    border-radius: 16px;
    padding: 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.login-card h1 {
    color: var(--primary);
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

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

.sidebar {
    width: 260px;
    background: var(--sidebar-bg);
    color: #fff;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
    transition: transform 0.3s ease;
}

.sidebar-brand {
    padding: 24px 20px;
    font-size: 1.25rem;
    font-weight: 600;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-brand i {
    color: #60a5fa;
}

.sidebar-nav {
    padding: 16px 0;
}

.nav-section {
    padding: 8px 20px;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: rgba(255, 255, 255, 0.4);
    margin-top: 12px;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    background: var(--sidebar-hover);
    color: #fff;
    border-left: 3px solid var(--primary);
}

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

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

.top-navbar {
    background: #fff;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.page-content {
    padding: 24px;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #111827;
    margin: 0;
}

.breadcrumb-text {
    color: #6b7280;
    font-size: 0.85rem;
}

.kpi-card {
    background: #fff;
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--card-shadow);
    border-left: 4px solid var(--primary);
    height: 100%;
}

.kpi-card.success { border-left-color: var(--success); }
.kpi-card.warning { border-left-color: var(--warning); }
.kpi-card.danger { border-left-color: var(--danger); }

.kpi-card .kpi-value {
    font-size: 1.75rem;
    font-weight: 600;
    margin: 8px 0 4px;
}

.kpi-card .kpi-label {
    color: #6b7280;
    font-size: 0.85rem;
}

.kpi-card .kpi-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.card-panel {
    background: #fff;
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--card-shadow);
    margin-bottom: 24px;
}

.card-panel h5 {
    font-weight: 600;
    margin-bottom: 20px;
    color: #111827;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

.status-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

.status-active { background: #d1fae5; color: #065f46; }
.status-pending { background: #fef3c7; color: #92400e; }
.status-closed { background: #e5e7eb; color: #374151; }
.status-rejected { background: #fee2e2; color: #991b1b; }

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.notification-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background: var(--danger);
    color: #fff;
    font-size: 0.65rem;
    padding: 2px 6px;
    border-radius: 10px;
}

.form-floating > .form-control {
    min-height: 52px;
}

.step-indicator {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 24px;
}

.step-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #d1d5db;
}

.step-dot.active {
    background: var(--primary);
    width: 32px;
    border-radius: 6px;
}

.receipt-preview {
    border: 1px dashed #d1d5db;
    padding: 24px;
    border-radius: 8px;
    background: #fafafa;
}

@media (max-width: 991px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }
}

@media (max-width: 576px) {
    .page-content {
        padding: 16px;
    }

    .kpi-card .kpi-value {
        font-size: 1.4rem;
    }
}