/* ============================================================
   自助扫码登录系统 - 全局样式
   ============================================================ */

:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #eef2ff;
    --success: #10b981;
    --success-light: #d1fae5;
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --info: #3b82f6;
    --info-light: #dbeafe;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
    background: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); }

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--primary-hover); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover:not(:disabled) { background: #059669; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover:not(:disabled) { background: #dc2626; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-outline { background: #fff; color: var(--gray-700); border: 1px solid var(--gray-300); }
.btn-outline:hover:not(:disabled) { background: var(--gray-50); border-color: var(--gray-400); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-lg { padding: 12px 24px; font-size: 16px; }

/* ---- Form Controls ---- */
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-700);
}
.form-control {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 14px;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: #fff;
}
.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}
textarea.form-control { resize: vertical; min-height: 100px; }
select.form-control { appearance: auto; }

/* ---- Cards ---- */
.card {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
    margin-bottom: 20px;
}
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--gray-200);
}
.card-header h2 {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-800);
}

/* ---- Tables ---- */
.table-wrapper { overflow-x: auto; }
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
thead th {
    background: var(--gray-50);
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    color: var(--gray-600);
    border-bottom: 2px solid var(--gray-200);
    white-space: nowrap;
}
tbody td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--gray-100);
    color: var(--gray-700);
}
tbody tr:hover { background: var(--gray-50); }

/* ---- Badges ---- */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}
.badge-success { background: var(--success-light); color: #065f46; }
.badge-danger { background: var(--danger-light); color: #991b1b; }
.badge-warning { background: var(--warning-light); color: #92400e; }
.badge-info { background: var(--info-light); color: #1e40af; }
.badge-gray { background: var(--gray-100); color: var(--gray-600); }

/* ---- Pagination ---- */
.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--gray-200);
    flex-wrap: wrap;
    gap: 12px;
}
.pagination-info { font-size: 14px; color: var(--gray-500); }
.pagination-btns { display: flex; gap: 4px; }
.pagination-btns .btn { min-width: 36px; }

/* ---- Alert / Toast ---- */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    font-size: 14px;
}
.alert-success { background: var(--success-light); color: #065f46; border: 1px solid #a7f3d0; }
.alert-danger { background: var(--danger-light); color: #991b1b; border: 1px solid #fca5a5; }
.alert-warning { background: var(--warning-light); color: #92400e; border: 1px solid #fcd34d; }
.alert-info { background: var(--info-light); color: #1e40af; border: 1px solid #93c5fd; }

.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.toast {
    padding: 12px 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    font-size: 14px;
    animation: slideIn 0.3s ease;
    max-width: 400px;
}
.toast-success { background: #065f46; color: #fff; }
.toast-error { background: #991b1b; color: #fff; }
.toast-info { background: #1e40af; color: #fff; }

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* ---- Modal ---- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}
.modal-overlay.active { opacity: 1; visibility: visible; }
.modal {
    background: #fff;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 500px;
    max-height: 80vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform 0.3s;
}
.modal-overlay.active .modal { transform: scale(1); }
.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-200);
}
.modal-header h3 { font-size: 16px; font-weight: 600; }
.modal-close {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--gray-400);
    padding: 4px;
}
.modal-close:hover { color: var(--gray-600); }
.modal-body { padding: 24px; }
.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    padding: 16px 24px;
    border-top: 1px solid var(--gray-200);
}

/* ---- User Page Layout ---- */
.user-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}
.user-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    padding: 40px;
    width: 100%;
    max-width: 460px;
}
.user-card h1 {
    text-align: center;
    font-size: 24px;
    color: var(--gray-800);
    margin-bottom: 8px;
}
.user-card .subtitle {
    text-align: center;
    color: var(--gray-500);
    font-size: 14px;
    margin-bottom: 32px;
}
.user-card .nav-link {
    text-align: center;
    margin-top: 16px;
    font-size: 13px;
}

/* ---- QR Upload Area ---- */
.qr-upload-area {
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius);
    padding: 30px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: 16px;
    position: relative;
}
.qr-upload-area:hover { border-color: var(--primary); background: var(--primary-light); }
.qr-upload-area.has-file { border-color: var(--success); background: var(--success-light); }
.qr-upload-area input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}
.qr-upload-icon { font-size: 36px; color: var(--gray-400); margin-bottom: 8px; }
.qr-upload-text { font-size: 14px; color: var(--gray-500); }

/* ---- Result Card ---- */
.result-card {
    padding: 20px;
    border-radius: var(--radius);
    margin-top: 16px;
    display: none;
}
.result-card.show { display: block; }
.result-card.success { background: var(--success-light); border: 1px solid #a7f3d0; }
.result-card.error { background: var(--danger-light); border: 1px solid #fca5a5; }
.result-card h3 { font-size: 16px; margin-bottom: 8px; }
.result-card p { font-size: 14px; }

/* ---- Query Result ---- */
.query-result {
    display: none;
    margin-top: 20px;
}
.query-result.show { display: block; }
.query-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}
.query-info-item {
    padding: 16px;
    background: var(--gray-50);
    border-radius: var(--radius);
    text-align: center;
}
.query-info-item .label {
    font-size: 12px;
    color: var(--gray-500);
    margin-bottom: 4px;
}
.query-info-item .value {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-800);
}

/* ---- Admin Layout ---- */
.admin-layout {
    display: flex;
    min-height: 100vh;
}
.admin-sidebar {
    width: 240px;
    background: var(--gray-900);
    color: #fff;
    padding: 0;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
}
.admin-sidebar .logo {
    padding: 20px;
    font-size: 18px;
    font-weight: 700;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    text-align: center;
}
.admin-sidebar nav { flex: 1; padding: 12px 0; }
.admin-sidebar nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    color: var(--gray-400);
    font-size: 14px;
    transition: all 0.2s;
}
.admin-sidebar nav a:hover { color: #fff; background: rgba(255,255,255,0.05); }
.admin-sidebar nav a.active { color: #fff; background: rgba(79, 70, 229, 0.3); border-right: 3px solid var(--primary); }
.admin-sidebar .sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 13px;
    color: var(--gray-400);
}

.admin-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}
.admin-header {
    background: #fff;
    padding: 16px 24px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 10;
}
.admin-header h1 { font-size: 20px; font-weight: 600; }
.admin-content { flex: 1; padding: 24px; overflow-y: auto; }

/* ---- Stats Grid ---- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.stat-card {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
}
.stat-card .stat-label {
    font-size: 13px;
    color: var(--gray-500);
    margin-bottom: 4px;
}
.stat-card .stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-800);
}
.stat-card .stat-sub {
    font-size: 12px;
    color: var(--gray-400);
    margin-top: 4px;
}

/* ---- Toolbar ---- */
.toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}
.toolbar .search-box {
    display: flex;
    gap: 8px;
}
.toolbar .search-box input {
    min-width: 200px;
}

/* ---- Checkbox ---- */
.checkbox-cell { width: 40px; text-align: center; }
input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--primary);
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .admin-sidebar { display: none; }
    .admin-content { padding: 16px; }
    .user-card { padding: 24px; }
    .query-info-grid { grid-template-columns: 1fr; }
    .toolbar { flex-direction: column; align-items: stretch; }
    .toolbar .search-box { flex-direction: column; }
    .toolbar .search-box input { min-width: auto; }
    .pagination { flex-direction: column; align-items: stretch; text-align: center; }
}

/* ---- Loading Spinner ---- */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Login Page ---- */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: var(--gray-100);
}
.login-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    padding: 40px;
    width: 100%;
    max-width: 400px;
}
.login-card h1 {
    text-align: center;
    font-size: 22px;
    margin-bottom: 24px;
    color: var(--gray-800);
}

/* ---- Config Form ---- */
.config-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
@media (max-width: 768px) {
    .config-grid { grid-template-columns: 1fr; }
}

/* ---- Copy Tooltip ---- */
.copy-tip {
    position: fixed;
    background: var(--gray-800);
    color: #fff;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 12px;
    pointer-events: none;
    z-index: 10001;
    animation: fadeOut 1.5s forwards;
}
@keyframes fadeOut {
    0%, 70% { opacity: 1; }
    100% { opacity: 0; }
}