/* /var/www/html/assets/css/style.css */
:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --background-color: #f8fafc;
    --card-background: #ffffff;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --danger-color: #ef4444;
    --success-color: #22c55e;
    --warning-color: #f59e0b;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
}

/* 登入外觀 */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.login-card {
    background: var(--card-background);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--border-color);
}

.login-card h2 {
    margin-top: 0;
    margin-bottom: 1.5rem;
    font-size: 1.75rem;
    font-weight: 700;
    text-align: center;
    color: var(--primary-color);
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    font-size: 0.95rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-sizing: border-box;
    transition: border-color 0.2s;
    background-color: #fff;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.btn {
    display: inline-block;
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    color: white;
    background-color: var(--primary-color);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s;
    text-align: center;
    text-decoration: none;
}

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

.btn-secondary {
    background-color: var(--text-muted);
}
.btn-secondary:hover {
    background-color: #475569;
}

.btn-danger {
    background-color: var(--danger-color);
}
.btn-danger:hover {
    background-color: #b91c1c;
}

.alert {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    font-size: 0.875rem;
    margin-bottom: 1.25rem;
    line-height: 1.5;
}

.alert-danger {
    background-color: #fef2f2;
    color: var(--danger-color);
    border: 1px solid #fee2e2;
}

.alert-success {
    background-color: #f0fdf4;
    color: var(--success-color);
    border: 1px solid #dcfce7;
}

/* 後台佈局外觀 */
.navbar {
    background-color: var(--card-background);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-link-logout {
    color: var(--danger-color);
    text-decoration: none;
    font-weight: 500;
}

.nav-link-logout:hover {
    text-decoration: underline;
}

.main-content {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

/* 卡片式儀表板 (Grid 佈局) */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.card {
    background: var(--card-background);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
    border-color: var(--primary-color);
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0 0 0.5rem 0;
    color: var(--primary-color);
}

.card-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin: 0 0 1.5rem 0;
    line-height: 1.4;
}

.card-action {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-color);
    text-align: right;
}

/* 表單卡片（用於設定頁面等） */
.panel-card {
    background: var(--card-background);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    max-width: 800px;
    margin-bottom: 2rem;
}

.panel-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-top: 0;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--background-color);
}

/* 兩欄排版 */
.form-row {
    display: flex;
    gap: 1rem;
}
.form-row .form-group {
    flex: 1;
}
@media (max-width: 600px) {
    .form-row {
        flex-direction: column;
        gap: 0;
    }
}

/* 表格樣式 */
.table-responsive {
    overflow-x: auto;
    background: var(--card-background);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.95rem;
}

.table th, .table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    background-color: #f1f5f9;
    font-weight: 600;
    color: var(--text-color);
}

.table tr:last-child td {
    border-bottom: none;
}

/* 狀態標籤 */
.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 4px;
    text-transform: uppercase;
}

.badge-pending {
    background-color: #fef3c7;
    color: #d97706;
}

.badge-approved {
    background-color: #dcfce7;
    color: #15803d;
}

.badge-rejected {
    background-color: #fee2e2;
    color: #b91c1c;
}