@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #64748b;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #06b6d4;
    --dark: #1e293b;
    --light: #f8fafc;
    --sidebar: #0f172a;
    --sidebar-width: 260px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: #f1f5f9;
    color: var(--dark);
    line-height: 1.6;
}

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

.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar);
    color: #94a3b8;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    transition: transform 0.3s;
    z-index: 1000;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid #1e293b;
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-header .logo {
    width: 40px; height: 40px;
    background: var(--primary);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    color: white; font-weight: bold; font-size: 18px;
}

.sidebar-header h1 {
    color: white; font-size: 18px; font-weight: 600;
}

.sidebar-menu { padding: 16px 12px; }
.menu-item {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 16px;
    border-radius: 8px;
    text-decoration: none;
    color: #94a3b8;
    margin-bottom: 4px;
    transition: all 0.2s;
    font-size: 14px;
}
.menu-item:hover, .menu-item.active {
    background: #1e293b;
    color: white;
}
.menu-item i { width: 20px; text-align: center; }

.main {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
}

.topbar {
    background: white;
    padding: 16px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #e2e8f0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.page-title { font-size: 24px; font-weight: 700; color: var(--dark); }
.user-menu {
    display: flex; align-items: center; gap: 16px;
}
.user-avatar {
    width: 36px; height: 36px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: flex; align-items: center; justify-content: center;
    font-weight: 600; font-size: 14px;
}

.content {
    padding: 32px;
    flex: 1;
}

.card {
    background: white;
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    margin-bottom: 24px;
}
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}
.card-title { font-size: 18px; font-weight: 600; }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}
.stat-card {
    background: white;
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    border-left: 4px solid var(--primary);
}
.stat-card.income { border-left-color: var(--success); }
.stat-card.expense { border-left-color: var(--danger); }
.stat-card.budget { border-left-color: var(--warning); }
.stat-label { color: var(--secondary); font-size: 14px; margin-bottom: 8px; }
.stat-value { font-size: 28px; font-weight: 700; color: var(--dark); }
.stat-change { font-size: 13px; margin-top: 4px; }

.data-table {
    width: 100%;
    border-collapse: collapse;
}
.data-table th, .data-table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}
.data-table th {
    background: #f8fafc;
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--secondary);
}
.data-table tr:hover { background: #f8fafc; }

.form-group { margin-bottom: 20px; }
.form-label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    font-size: 14px;
}
.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    font-size: 14px;
    transition: border 0.2s;
    font-family: inherit;
}
.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
select.form-control { height: 42px; }
textarea.form-control { min-height: 100px; resize: vertical; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: all 0.2s;
}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-warning { background: var(--warning); color: white; }
.btn-secondary { background: var(--secondary); color: white; }
.btn-sm { padding: 6px 14px; font-size: 13px; }

.badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}
.badge-pending { background: #fef3c7; color: #92400e; }
.badge-approved { background: #d1fae5; color: #065f46; }
.badge-rejected { background: #fee2e2; color: #991b1b; }
.badge-success { background: #d1fae5; color: #065f46; }

.alert {
    padding: 14px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}
.alert-success { background: #d1fae5; color: #065f46; border: 1px solid #a7f3d0; }
.alert-danger { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }
.alert-warning { background: #fef3c7; color: #92400e; border: 1px solid #fde68a; }

.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
}
.auth-box {
    background: white;
    padding: 48px;
    border-radius: 16px;
    width: 100%;
    max-width: 440px;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25);
}
.auth-logo {
    text-align: center;
    margin-bottom: 32px;
}
.auth-logo h2 { color: var(--dark); font-size: 24px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.progress-bar {
    height: 8px;
    background: #e2e8f0;
    border-radius: 4px;
    overflow: hidden;
    margin-top: 8px;
}
.progress-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.3s;
}
.progress-fill.safe { background: var(--success); }
.progress-fill.warning { background: var(--warning); }
.progress-fill.danger { background: var(--danger); }

@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main { margin-left: 0; }
    .stats-grid { grid-template-columns: 1fr; }
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

@media print {
    .sidebar, .topbar, .btn { display: none !important; }
    .main { margin-left: 0; }
    .card { box-shadow: none; border: 1px solid #ddd; }
}