/* ============================================================
   中科安樵客户管理系统 — 统一样式表
   Self-contained, no external CDN dependencies.
   ============================================================ */

/* --- Design tokens (TASK-0043 baseline) --- */
:root {
    /* Color palette */
    --color-primary: #667eea;
    --color-primary-dark: #5a6fd6;
    --color-primary-light: #e8f0fe;
    --color-accent: #764ba2;
    --color-accent-dark: #6a4192;
    --color-bg: #f0f2f5;
    --color-surface: #ffffff;
    --color-text: #333333;
    --color-text-muted: #888888;
    --color-text-strong: #444444;
    --color-border: #eeeeee;
    --color-border-strong: #d0d5dd;
    --color-danger: #e74c3c;
    --color-danger-dark: #c0392b;
    --color-danger-bg: #fef0ef;
    --color-success: #4caf50;
    --color-success-bg: #e8f5e9;
    --color-warning: #e67e22;
    --color-warning-bg: #fff8e1;
    --color-info: #2196f3;
    --color-info-bg: #e3f2fd;
    --color-hover-bg: #f8f9ff;

    /* Spacing scale */
    --space-xs: 0.35rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;

    /* Radius scale */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 8px;

    /* Font-size scale */
    --font-xs: 11px;
    --font-sm: 12px;
    --font-md: 14px;
    --font-lg: 18px;
    --font-xl: 22px;

    /* Shadows */
    --shadow-card: 0 1px 4px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 2px 12px rgba(0, 0, 0, 0.1);
    --shadow-btn: 0 4px 12px rgba(102, 126, 234, 0.35);

    /* Navbar */
    --navbar-gradient: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    --navbar-height: 60px;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s;
}
a:hover { color: var(--color-primary-dark); }

/* --- Navbar --- */
.navbar {
    background: var(--navbar-gradient);
    color: white;
    padding: 0 var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--navbar-height);
    box-shadow: 0 2px 8px rgba(0,0,0,0.12);
    flex-shrink: 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 20px;
    font-weight: 700;
    color: white;
    letter-spacing: 0.5px;
}
.navbar-brand .navbar-logo {
    height: 36px;
    width: auto;
    display: block;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav-link {
    color: rgba(255,255,255,0.85);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: var(--font-md);
    font-weight: 500;
    transition: background 0.2s, color 0.2s;
    text-decoration: none;
}
.nav-link:hover {
    background: rgba(255,255,255,0.15);
    color: white;
}
.nav-link.active {
    background: rgba(255,255,255,0.2);
    color: white;
}

.navbar-right {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.user-badge {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 13px;
    opacity: 0.9;
}
.user-badge .role-tag {
    background: rgba(255,255,255,0.2);
    padding: 2px 8px;
    border-radius: 10px;
    font-size: var(--font-xs);
}

.btn-logout {
    background: rgba(255,255,255,0.15);
    color: white;
    border: 1px solid rgba(255,255,255,0.25);
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 13px;
    transition: background 0.2s;
}
.btn-logout:hover { background: rgba(255,255,255,0.3); }

/* --- Container --- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-lg) var(--space-md);
    flex: 1;
    width: 100%;
}

/* --- Cards --- */
.card {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    transition: box-shadow 0.2s;
}
.card:hover { box-shadow: var(--shadow-hover); }
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}
.card-header h2 {
    font-size: var(--font-lg);
    color: var(--color-text);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 8px 18px;
    border-radius: var(--radius-sm);
    font-size: var(--font-md);
    font-weight: 500;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: all 0.2s;
    line-height: 1.4;
}
.btn-primary {
    background: var(--navbar-gradient);
    color: white;
}
.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-accent-dark) 100%);
    transform: translateY(-1px);
    box-shadow: var(--shadow-btn);
}
.btn-secondary {
    background: #e8eaed;
    color: var(--color-text-strong);
}
.btn-secondary:hover { background: #dcdfe3; }
.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}
.btn-outline:hover { background: var(--color-hover-bg); }
.btn-sm { padding: 5px 12px; font-size: 13px; }
.btn-danger {
    background: var(--color-danger);
    color: white;
}
.btn-danger:hover { background: var(--color-danger-dark); }

/* --- Forms --- */
.form-group {
    margin-bottom: 1.2rem;
}
.form-group label {
    display: block;
    color: var(--color-text-strong);
    font-size: var(--font-md);
    font-weight: 500;
    margin-bottom: 0.35rem;
}
.form-group .hint {
    display: block;
    color: #999;
    font-size: var(--font-sm);
    margin-top: 0.2rem;
}
.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="datetime-local"],
.form-group input[type="date"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-sm);
    font-size: var(--font-md);
    color: var(--color-text);
    background: white;
    transition: border-color 0.2s, box-shadow 0.2s;
    font-family: inherit;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(102,126,234,0.15);
}
.form-group input.error,
.form-group select.error,
.form-group textarea.error {
    border-color: var(--color-danger);
}
.form-group input[type="checkbox"] {
    margin-right: 0.5rem;
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
@media (max-width: 640px) {
    .form-row { grid-template-columns: 1fr; }
}

/* --- Error / Success / Alert --- */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
    font-size: var(--font-md);
    border-left: 4px solid;
}
.alert-error {
    background: var(--color-danger-bg);
    color: #b71c1c;
    border-color: var(--color-danger);
}
.alert-success {
    background: var(--color-success-bg);
    color: #2e7d32;
    border-color: var(--color-success);
}
.alert-info {
    background: var(--color-info-bg);
    color: #1565c0;
    border-color: var(--color-info);
}

/* --- Empty State --- */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: #999;
}
.empty-state .icon { font-size: 48px; margin-bottom: 0.5rem; }
.empty-state p { font-size: 15px; margin-bottom: 1rem; }

/* --- Stats Grid --- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
    margin-bottom: var(--space-lg);
}
.stat-card {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    box-shadow: var(--shadow-card);
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
}
.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}
.stat-card .number {
    font-size: 36px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.35rem;
}
.stat-card .label {
    color: #777;
    font-size: var(--font-md);
    font-weight: 500;
}

/* --- Quick Actions --- */
.quick-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: var(--space-lg);
}

/* --- Table --- */
.table-wrapper { overflow-x: auto; }
table {
    width: 100%;
    border-collapse: collapse;
}
th, td {
    text-align: left;
    padding: 0.75rem 0.75rem;
    border-bottom: 1px solid var(--color-border);
    font-size: var(--font-md);
}
th {
    color: var(--color-text-muted);
    font-size: var(--font-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: #fafafa;
}
tr:hover td { background: var(--color-hover-bg); }
td a { font-weight: 500; }

/* --- Search Bar --- */
.search-bar {
    display: flex;
    gap: 0.5rem;
    margin-bottom: var(--space-md);
}
.search-bar input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-sm);
    font-size: var(--font-md);
    transition: border-color 0.2s;
}
.search-bar input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(102,126,234,0.15);
}

/* --- Pagination --- */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    margin-top: 1rem;
    padding: 0.75rem 0;
}
.pagination .page-info {
    color: #888;
    font-size: 13px;
}

/* --- Detail Sections --- */
.detail-section {
    margin-bottom: var(--space-lg);
}
.detail-section h2 {
    font-size: var(--font-lg);
    color: var(--color-text);
    margin-bottom: var(--space-md);
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--color-bg);
}
.field-row {
    display: flex;
    padding: 0.5rem 0;
    border-bottom: 1px solid #f5f5f5;
}
.field-row:last-child { border-bottom: none; }
.field-label {
    color: var(--color-text-muted);
    width: 160px;
    flex-shrink: 0;
    font-size: 13px;
    font-weight: 500;
}
.field-value {
    color: var(--color-text);
    font-size: var(--font-md);
    flex: 1;
}

/* --- Timeline --- */
.timeline {
    position: relative;
    padding-left: 2rem;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #e0e0e0;
}
.timeline-item {
    position: relative;
    padding: 1rem 0 1rem 1.5rem;
    margin-bottom: 0.5rem;
}
.timeline-item::before {
    content: '';
    position: absolute;
    left: -1.65rem;
    top: 1.35rem;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 2px solid white;
    box-shadow: 0 0 0 2px var(--color-primary);
}
.timeline-meta {
    font-size: var(--font-sm);
    color: #999;
    margin-bottom: 0.3rem;
}
.timeline-meta .method-tag {
    display: inline-block;
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
    padding: 1px 8px;
    border-radius: 10px;
    font-size: var(--font-xs);
    margin-left: 0.5rem;
}
.timeline-body {
    font-size: var(--font-md);
    color: var(--color-text);
    line-height: 1.6;
    white-space: pre-wrap;
}
.timeline-body .summary {
    margin-top: 0.5rem;
    padding: 0.5rem;
    background: var(--color-hover-bg);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: #666;
}
.timeline-body .next-action {
    margin-top: 0.5rem;
    padding: 0.5rem;
    background: var(--color-warning-bg);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: #795548;
}

/* --- Contact Cards --- */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-md);
}
.contact-card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    transition: box-shadow 0.2s;
}
.contact-card:hover { box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.contact-card .contact-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.3rem;
}
.contact-card .contact-role {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
}
.contact-card .contact-channels {
    font-size: 13px;
    color: #555;
}
.contact-card .contact-channels span {
    display: inline-block;
    margin-right: 0.75rem;
    color: #666;
}

/* --- Admin Exception --- */
.admin-exception-card {
    background: var(--color-warning-bg);
    border: 1px solid #ffe082;
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    margin-bottom: var(--space-md);
}
.admin-exception-card h3 {
    font-size: var(--font-md);
    color: #f57f17;
    margin-bottom: 0.5rem;
}
.admin-exception-card input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #ffe082;
    border-radius: var(--radius-sm);
    font-size: var(--font-md);
    margin-bottom: 0.5rem;
}

/* --- Status tags (TASK-0043 baseline) --- */
.status-tag {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 10px;
    font-size: var(--font-xs);
    font-weight: 500;
    background: #eceff1;
    color: #546e7a;
}
.status-tag.status-pending { background: var(--color-warning-bg); color: var(--color-warning); }
.status-tag.status-accepted { background: var(--color-success-bg); color: #2e7d32; }
.status-tag.status-ignored { background: #eceff1; color: #78909c; }

/* --- Inline action forms (TASK-0043 baseline) --- */
.inline-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    align-items: center;
    margin-top: var(--space-sm);
}
.action-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    align-items: center;
    margin-top: var(--space-md);
}
.action-form {
    display: inline-flex;
    gap: var(--space-sm);
    align-items: center;
}
.action-form textarea,
.action-form input[type="text"] {
    padding: 6px 10px;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-family: inherit;
}
.alert-inline {
    margin-top: var(--space-sm);
    margin-bottom: 0;
    font-size: 13px;
}

/* --- Footer --- */
.footer {
    text-align: center;
    padding: var(--space-md) var(--space-xl);
    color: #bbb;
    font-size: var(--font-sm);
    border-top: 1px solid var(--color-border);
    flex-shrink: 0;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .navbar { padding: 0 1rem; }
    .navbar-nav { gap: 0; }
    .nav-link { padding: 8px 10px; font-size: 13px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: 1fr; }
}