/**
 * 安徽圣恒机械 - 后台管理系统样式
 */

:root {
    --primary: #1e3a8a;
    --primary-dark: #0f216e;
    --primary-light: #3b5cb8;
    --secondary: #d4af37;
    --secondary-light: #f0d878;
    --dark: #0f172a;
    --gray: #64748b;
    --gray-light: #f1f5f9;
    --white: #ffffff;
    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --sidebar-width: 260px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    background: #f3f4f6;
    color: var(--dark);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

/* Login */
.login-body {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-box {
    background: var(--white);
    border-radius: 20px;
    padding: 50px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.login-logo {
    text-align: center;
    margin-bottom: 40px;
}

.login-logo img {
    height: 70px;
    margin-bottom: 16px;
}

.login-logo h1 {
    font-size: 24px;
    color: var(--primary-dark);
}

.login-logo p {
    color: var(--gray);
    font-size: 14px;
    margin-top: 8px;
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 14px;
}

.form-control {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    font-family: inherit;
    font-size: 15px;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(30, 58, 138, 0.1);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    width: 100%;
}

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

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

.btn-secondary:hover {
    background: #b8941d;
}

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

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

.alert {
    padding: 14px 18px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 14px;
}

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

.alert-success {
    background: #dcfce7;
    color: #166534;
}

/* Layout */
.admin-wrapper {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--dark);
    color: var(--white);
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    overflow-y: auto;
    z-index: 1000;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-header img {
    height: 45px;
}

.sidebar-header h2 {
    font-size: 16px;
    line-height: 1.3;
}

.sidebar-header p {
    font-size: 12px;
    color: var(--gray);
    margin-top: 4px;
}

.sidebar-menu {
    padding: 20px 0;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 24px;
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.menu-item:hover,
.menu-item.active {
    background: rgba(255, 255, 255, 0.05);
    color: var(--white);
    border-left-color: var(--secondary);
}

.menu-item i {
    width: 22px;
    text-align: center;
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.topbar {
    background: var(--white);
    padding: 16px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.topbar-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: 16px;
}

.topbar-user a {
    color: var(--gray);
    font-size: 14px;
}

.topbar-user a:hover {
    color: var(--primary);
}

.content {
    flex: 1;
    padding: 30px;
}

/* Dashboard Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--white);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 16px;
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    background: rgba(30, 58, 138, 0.1);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-info h3 {
    font-size: 28px;
    font-weight: 800;
    color: var(--dark);
}

.stat-info p {
    color: var(--gray);
    font-size: 14px;
}

/* Cards */
.card {
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    margin-bottom: 24px;
    overflow: hidden;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid #f1f5f9;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-title {
    font-size: 18px;
    font-weight: 700;
}

.card-body {
    padding: 24px;
}

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

.table th,
.table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid #f1f5f9;
    font-size: 14px;
}

.table th {
    font-weight: 600;
    color: var(--gray);
    background: #f8fafc;
}

.table tr:hover td {
    background: #f8fafc;
}

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
}

.badge-success {
    background: #dcfce7;
    color: #166534;
}

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

/* Forms in admin */
textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--gray);
}

.empty-state i {
    font-size: 48px;
    margin-bottom: 16px;
    color: #cbd5e1;
}

/* Footer */
.admin-footer {
    padding: 20px 30px;
    text-align: center;
    color: var(--gray);
    font-size: 13px;
    border-top: 1px solid #e2e8f0;
}

/* Responsive */
@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
        transition: var(--transition);
    }
    .sidebar.active {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .table-responsive {
        overflow-x: auto;
    }
}