:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #eff6ff;
    --success: #16a34a;
    --warning: #f59e0b;
    --danger: #dc2626;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-500: #6b7280;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --radius: 8px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --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: 'Segoe UI', 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    background: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.6;
    min-height: 100vh;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: white;
    padding: 20px 0;
    box-shadow: var(--shadow-md);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header h1 {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 1px;
}

.header-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

/* Stats Cards */
.stats-grid {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.stat-card {
    background: white;
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 16px;
    transition: transform 0.2s;
}

.stat-card:hover { transform: translateY(-2px); }

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}

.stat-icon.blue { background: var(--primary-light); color: var(--primary); }
.stat-icon.green { background: #dcfce7; color: var(--success); }
.stat-icon.orange { background: #fef3c7; color: var(--warning); }
.stat-icon.purple { background: #f3e8ff; color: #9333ea; }

.stat-info h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1.2;
}

.stat-info p {
    font-size: 13px;
    color: var(--gray-500);
}

/* Main container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px 40px;
}

/* Toolbar */
.toolbar {
    background: white;
    border-radius: var(--radius);
    padding: 16px 20px;
    box-shadow: var(--shadow);
    margin-bottom: 16px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
}

.search-group {
    flex: 1;
    min-width: 200px;
    display: flex;
    gap: 8px;
    align-items: center;
}

.search-input {
    flex: 1;
    padding: 8px 14px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
    font-family: inherit;
}

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

.select {
    padding: 8px 14px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    font-size: 14px;
    background: white;
    cursor: pointer;
    font-family: inherit;
    outline: none;
}

.select:focus { border-color: var(--primary); }

/* Buttons */
.btn {
    padding: 8px 18px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

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

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

.btn-outline {
    background: white;
    border: 1px solid var(--gray-300);
    color: var(--gray-700);
}

.btn-outline:hover { background: var(--gray-50); border-color: var(--gray-500); }

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

.btn-sm { padding: 5px 12px; font-size: 13px; }

/* Table */
.table-wrap {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

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

thead {
    background: var(--gray-100);
}

th {
    padding: 12px 16px;
    text-align: left;
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-700);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--gray-200);
    white-space: nowrap;
}

td {
    padding: 10px 16px;
    font-size: 14px;
    border-bottom: 1px solid var(--gray-100);
}

tbody tr { transition: background 0.15s; }
tbody tr:nth-child(even) { background: var(--gray-50); }
tbody tr:hover { background: var(--primary-light); }

.project-tag {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    background: var(--gray-100);
    color: var(--gray-700);
}

.gender-male { color: var(--primary); font-weight: 600; }
.gender-female { color: #ec4899; font-weight: 600; }

.phone-cell {
    cursor: pointer;
    position: relative;
}

.phone-display {
    display: inline-block;
    min-width: 120px;
    padding: 4px 8px;
    border-radius: 4px;
    transition: background 0.15s;
}

.phone-display.has-phone { color: var(--gray-800); }
.phone-display.no-phone { color: var(--gray-300); font-style: italic; }
.phone-display:hover { background: var(--gray-100); }

.phone-input {
    width: 140px;
    padding: 4px 8px;
    border: 1px solid var(--primary);
    border-radius: 4px;
    font-size: 14px;
    outline: none;
    font-family: inherit;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 20px;
}

.page-info {
    font-size: 13px;
    color: var(--gray-500);
    margin-right: 12px;
}

.page-btn {
    min-width: 36px;
    height: 36px;
    border: 1px solid var(--gray-300);
    background: white;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    color: var(--gray-700);
    transition: all 0.15s;
    font-family: inherit;
}

.page-btn:hover:not(:disabled) { background: var(--primary-light); border-color: var(--primary); }
.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.page-btn.active { background: var(--primary); color: white; border-color: var(--primary); }

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(2px);
}

.modal-overlay.show { display: flex; }

.modal {
    background: white;
    border-radius: 12px;
    padding: 32px;
    width: 360px;
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.2s ease;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.modal h2 {
    font-size: 20px;
    margin-bottom: 8px;
    color: var(--gray-900);
}

.modal p {
    font-size: 14px;
    color: var(--gray-500);
    margin-bottom: 24px;
}

.modal-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    font-size: 14px;
    margin-bottom: 12px;
    outline: none;
    font-family: inherit;
    transition: border-color 0.2s;
}

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

.modal-actions {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.modal-actions .btn { flex: 1; justify-content: center; }

/* Toast */
.toast {
    position: fixed;
    top: 24px;
    right: 24px;
    padding: 12px 24px;
    border-radius: 8px;
    color: white;
    font-size: 14px;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    animation: toastIn 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.info { background: var(--primary); }

/* Loading */
.loading {
    text-align: center;
    padding: 40px;
    color: var(--gray-500);
}

.spinner {
    display: inline-block;
    width: 32px;
    height: 32px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Empty state */
.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--gray-500);
}

.empty-state .icon { font-size: 48px; margin-bottom: 12px; }

/* User badge */
.user-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.user-badge .avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content { flex-direction: column; gap: 12px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .toolbar { flex-direction: column; align-items: stretch; }
    .table-wrap { overflow-x: auto; }
    th, td { padding: 8px 12px; font-size: 13px; }
}