/* Reset & Variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #416BA6;
    --primary-dark: #2C4A75;
    --danger: #E63946;
    --success: #00A95F;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-600: #4B5563;
    --gray-900: #111827;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--gray-900);
    background: var(--gray-50);
}

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-card {
    background: white;
    border-radius: 8px;
    padding: 40px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-header h1 {
    font-size: 24px;
    color: var(--primary);
    margin-bottom: 8px;
}

.login-header p {
    color: var(--gray-600);
    font-size: 14px;
}

.login-footer {
    margin-top: 24px;
    text-align: center;
    font-size: 12px;
    color: var(--gray-600);
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: var(--gray-900);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    font-size: 14px;
    transition: all 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(65, 107, 166, 0.1);
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

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

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

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-900);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

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

.btn-block {
    width: 100%;
}

/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 20px;
}

.alert-error {
    background: #FEE2E2;
    color: #991B1B;
    border: 1px solid #FCA5A5;
}

.alert-info {
    background: #DBEAFE;
    color: #1E40AF;
    border: 1px solid #93C5FD;
}

/* Navbar */
.navbar {
    background: white;
    border-bottom: 1px solid var(--gray-200);
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 16px;
    color: var(--gray-600);
}

/* Layout */
.container {
    display: flex;
    min-height: calc(100vh - 60px);
}

.sidebar {
    width: 240px;
    background: white;
    border-right: 1px solid var(--gray-200);
    padding: 24px 0;
}

.sidebar-menu {
    list-style: none;
}

.sidebar-menu li {
    margin-bottom: 4px;
}

.sidebar-menu a {
    display: block;
    padding: 10px 24px;
    color: var(--gray-900);
    text-decoration: none;
    transition: all 0.2s;
}

.sidebar-menu a:hover {
    background: var(--gray-100);
    color: var(--primary);
}

.content {
    flex: 1;
    padding: 40px;
}

.content h1 {
    font-size: 28px;
    margin-bottom: 32px;
    color: var(--primary);
}

/* Cards */
.card {
    background: white;
    border-radius: 8px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.card h2 {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--gray-900);
}

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

.table thead {
    background: var(--gray-50);
}

.table th {
    padding: 12px;
    text-align: left;
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    color: var(--gray-600);
}

.table td {
    padding: 12px;
    border-top: 1px solid var(--gray-200);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    background: var(--gray-200);
    color: var(--gray-900);
}

.badge-success {
    background: #D1FAE5;
    color: #065F46;
}

.badge-error {
    background: #FEE2E2;
    color: #991B1B;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--gray-200);
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}