/* ========================================
   สไตล์สำหรับหน้า Admin
   ======================================== */

/* Login Page */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-box {
    background: var(--white-color);
    border-radius: 1rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 2.5rem;
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header i {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.login-header h2 {
    font-size: 1.75rem;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.login-header p {
    color: #6b7280;
}

.alert {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.alert-danger {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.form-group {
    margin-bottom: 1.5rem;
}

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

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    outline: none;
    transition: all 0.3s ease;
    font-family: 'Sarabun', sans-serif;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.btn {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Sarabun', sans-serif;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: var(--white-color);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

.btn-block {
    width: 100%;
    justify-content: center;
}

.login-footer {
    text-align: center;
    margin-top: 1.5rem;
}

.back-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.back-link:hover {
    text-decoration: underline;
}

.login-info {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    color: #6b7280;
}

/* Admin Layout */
.admin-page {
    background-color: #f3f4f6;
}

.admin-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white-color);
    padding: 1rem 0;
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.admin-header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.admin-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 600;
}

.admin-logo i {
    font-size: 1.5rem;
}

.admin-user {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.btn-logout {
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--white-color);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-logout:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

.admin-layout {
    display: flex;
    min-height: calc(100vh - 60px);
}

.admin-sidebar {
    width: 250px;
    background: var(--white-color);
    box-shadow: var(--shadow);
    position: sticky;
    top: 60px;
    height: calc(100vh - 60px);
    overflow-y: auto;
}

.sidebar-nav {
    padding: 1rem 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background-color: var(--light-color);
    border-left-color: var(--primary-color);
}

.nav-item.active {
    background-color: #eff6ff;
    border-left-color: var(--primary-color);
    color: var(--primary-color);
    font-weight: 600;
}

.admin-content {
    flex: 1;
    padding: 2rem;
}

.page-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--white-color);
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 70px;
    height: 70px;
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white-color);
    font-size: 2rem;
}

.stat-info h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 0.25rem;
}

.stat-info p {
    color: #6b7280;
}

/* Admin Card */
.admin-card {
    background: var(--white-color);
    border-radius: 1rem;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.card-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--dark-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Table */
.table-responsive {
    overflow-x: auto;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table thead {
    background-color: var(--light-color);
}

.admin-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--dark-color);
    border-bottom: 2px solid var(--border-color);
}

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

.admin-table tbody tr:hover {
    background-color: var(--light-color);
}

.link-url {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.link-url:hover {
    text-decoration: underline;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
}

.badge-success {
    background-color: #d1fae5;
    color: #065f46;
}

.badge-danger {
    background-color: #fee2e2;
    color: #991b1b;
}

.btn-sm {
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
}

.btn-warning {
    background-color: #fbbf24;
    color: var(--dark-color);
}

.btn-warning:hover {
    background-color: #f59e0b;
}

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

    .admin-sidebar {
        width: 100%;
        height: auto;
        position: static;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .admin-header-content {
        flex-direction: column;
        gap: 1rem;
    }

    .card-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
}