/* ===== 全局变量 ===== */
:root {
    --primary: #4f46e5;
    --primary-light: #6366f1;
    --primary-dark: #4338ca;
    --primary-bg: #eef2ff;
    --success: #10b981;
    --success-bg: #d1fae5;
    --warning: #f59e0b;
    --warning-bg: #fef3c7;
    --danger: #ef4444;
    --danger-bg: #fee2e2;
    --gray: #6b7280;
    --gray-light: #9ca3af;
    --text-main: #1f2937;
    --text-sub: #6b7280;
    --text-muted: #9ca3af;
    --border: #e5e7eb;
    --bg-page: #f5f7fa;
    --bg-card: #ffffff;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition: all 0.2s ease;
}

/* ===== 基础重置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: var(--bg-page);
    color: var(--text-main);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* ===== 主容器 ===== */
.dashboard-container {
    min-height: 100vh;
}

.main-content {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ===== 顶部头部 ===== */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    height: 64px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.breadcrumb-item {
    color: var(--text-sub);
}

.breadcrumb-item.active {
    color: var(--text-main);
    font-weight: 600;
}

.breadcrumb-sep {
    color: var(--text-muted);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 14px;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-box svg {
    position: absolute;
    left: 12px;
    width: 16px;
    height: 16px;
    color: var(--text-muted);
    pointer-events: none;
}

.search-box input {
    width: 220px;
    height: 38px;
    padding: 0 14px 0 36px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-page);
    font-size: 13px;
    color: var(--text-main);
    transition: var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.header-icon-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-sub);
    cursor: pointer;
    transition: var(--transition);
}

.header-icon-btn:hover {
    color: var(--primary);
    border-color: var(--primary);
    background: var(--primary-bg);
}

.header-icon-btn svg {
    width: 18px;
    height: 18px;
}

.badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    border-radius: 9px;
    background: var(--danger);
    color: #fff;
    font-size: 11px;
    font-weight: 600;
    line-height: 18px;
    text-align: center;
}

/* ===== 用户下拉 ===== */
.user-dropdown {
    position: relative;
}

.user-trigger {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 4px 10px 4px 4px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

.user-trigger:hover {
    background: var(--bg-page);
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-meta {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.user-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-main);
}

.user-role {
    font-size: 11px;
    color: var(--text-muted);
}

.dropdown-arrow {
    width: 16px;
    height: 16px;
    color: var(--text-muted);
    transition: transform 0.2s ease;
}

.dropdown-arrow.up {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 180px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 6px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: var(--transition);
}

.dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    border-radius: var(--radius-sm);
    color: var(--text-main);
    text-decoration: none;
    font-size: 13px;
    transition: var(--transition);
}

.dropdown-item:hover {
    background: var(--bg-page);
    color: var(--primary);
}

.dropdown-item.logout:hover {
    background: var(--danger-bg);
    color: var(--danger);
}

.dropdown-item svg {
    width: 16px;
    height: 16px;
}

/* ===== 通用按钮 ===== */
.btn-confirm,
.btn-cancel {
    height: 40px;
    padding: 0 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.btn-confirm {
    background: var(--primary);
    color: #fff;
}

.btn-confirm:hover {
    background: var(--primary-dark);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.btn-cancel {
    background: var(--bg-page);
    color: var(--text-sub);
    border: 1px solid var(--border);
}

.btn-cancel:hover {
    background: #fff;
    color: var(--text-main);
}

/* ===== 弹窗 ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(17, 24, 39, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.modal {
    width: 480px;
    max-width: calc(100vw - 32px);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transform: translateY(20px) scale(0.98);
    transition: var(--transition);
    overflow: hidden;
}

.modal-overlay.show .modal {
    transform: translateY(0) scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-main);
}

.modal-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--bg-page);
    color: var(--text-main);
}

.modal-close svg {
    width: 18px;
    height: 18px;
}

.modal-body {
    padding: 24px;
}

/* ===== 表单 ===== */
.form-group {
    margin-bottom: 18px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-main);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    height: 40px;
    padding: 0 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    font-size: 13px;
    color: var(--text-main);
    font-family: inherit;
    transition: var(--transition);
}

.form-group textarea {
    height: auto;
    padding: 10px 14px;
    resize: vertical;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.search-input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.search-input-wrap .search-icon {
    position: absolute;
    left: 12px;
    width: 16px;
    height: 16px;
    color: var(--text-muted);
    pointer-events: none;
}

.search-input-wrap input {
    padding-left: 36px;
    padding-right: 90px;
}

.search-btn {
    position: absolute;
    right: 6px;
    height: 28px;
    padding: 0 14px;
    border: none;
    border-radius: 6px;
    background: var(--primary);
    color: #fff;
    font-size: 12px;
    cursor: pointer;
    transition: var(--transition);
}

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

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding-top: 4px;
}

.search-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 40px 0;
    color: var(--text-muted);
    font-size: 13px;
}

.search-placeholder svg {
    width: 36px;
    height: 36px;
    opacity: 0.5;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .header {
        padding: 0 16px;
    }

    .search-box input {
        width: 140px;
    }

    .user-meta {
        display: none;
    }

    .modal {
        width: calc(100vw - 24px);
    }
}