/* ===== 尼氏集团 - 观赏鱼库存管理系统 ===== */

/* 基础变量 */
:root {
    --primary: #2563eb;
    --primary-light: #dbeafe;
    --success: #16a34a;
    --success-light: #dcfce7;
    --danger: #dc2626;
    --danger-light: #fee2e2;
    --warning: #d97706;
    --warning-light: #fef3c7;
    --text: #1e293b;
    --text-secondary: #64748b;
    --bg: #f1f5f9;
    --card-bg: #ffffff;
    --border: #e2e8f0;
    --sidebar-bg: #0f172a;
    --sidebar-text: #cbd5e1;
    --sidebar-active: #2563eb;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    display: flex;
    min-height: 100vh;
    font-size: 14px;
    line-height: 1.6;
}

/* ===== 侧边栏 ===== */
.sidebar {
    width: 220px;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    overflow-y: auto;
    z-index: 100;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo { font-size: 28px; }

.brand-name {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
}

.brand-sub {
    font-size: 11px;
    color: var(--sidebar-text);
    opacity: 0.7;
}

.nav-menu {
    list-style: none;
    padding: 8px 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    color: var(--sidebar-text);
    text-decoration: none;
    transition: all 0.2s;
    font-size: 14px;
}

.nav-item:hover {
    background: rgba(255,255,255,0.06);
    color: #fff;
}

.nav-item.active {
    background: var(--sidebar-active);
    color: #fff;
}

.nav-icon { font-size: 16px; }

/* ===== 主内容区 ===== */
.content {
    margin-left: 220px;
    flex: 1;
    min-height: 100vh;
}

.page-header {
    background: var(--card-bg);
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
}

.page-header h1 {
    font-size: 20px;
    font-weight: 600;
}

.header-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.page-body {
    padding: 24px;
}

/* ===== 统计卡片 ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary);
}

.stat-card.stat-in { border-left-color: var(--success); }
.stat-card.stat-out { border-left-color: var(--primary); }
.stat-card.stat-loss { border-left-color: var(--danger); }

.stat-icon { font-size: 28px; }

.stat-value {
    font-size: 24px;
    font-weight: 700;
    line-height: 1.2;
}

.stat-label {
    font-size: 12px;
    color: var(--text-secondary);
}

/* ===== 卡片 ===== */
.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h3 {
    font-size: 15px;
    font-weight: 600;
}

.card-body { padding: 20px; }

.card-wide { grid-column: 1 / -1; }

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

/* ===== 表格 ===== */
.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.table th {
    background: var(--bg);
    padding: 10px 12px;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
}

.table tr:hover td { background: var(--bg); }

.table-warning .warning-row td { background: var(--danger-light); }

.row-warning td { background: #fff7ed !important; }

.stock-num { font-weight: 700; font-size: 16px; }

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: #1d4ed8; }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }

.btn-ghost { background: transparent; color: var(--text-secondary); }
.btn-ghost:hover { background: var(--bg); }

.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); }

.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-lg { padding: 10px 24px; font-size: 15px; }

.btn-close {
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 4px;
}

/* ===== 表单 ===== */
.form { max-width: 800px; }

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.form-group label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group select {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.2s;
    background: #fff;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-hint {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.form-actions {
    padding-top: 8px;
    display: flex;
    gap: 12px;
}

/* ===== 品种卡片 ===== */
.species-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 16px;
}

.species-card .card-header {
    flex-wrap: wrap;
    gap: 8px;
}

.species-title {
    display: flex;
    align-items: center;
    gap: 8px;
}

.species-name { font-weight: 600; font-size: 15px; }

.species-category {
    font-size: 11px;
    background: var(--primary-light);
    color: var(--primary);
    padding: 2px 8px;
    border-radius: 10px;
}

.species-actions {
    display: flex;
    gap: 6px;
}

.grade-list { display: flex; flex-direction: column; gap: 8px; }

.grade-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    border-radius: 6px;
    background: var(--bg);
}

.grade-item.grade-warning { background: var(--warning-light); }

.grade-info {
    display: flex;
    gap: 16px;
    align-items: center;
    font-size: 13px;
}

.grade-name { font-weight: 500; }
.grade-stock strong { color: var(--primary); }
.grade-safety { color: var(--text-secondary); font-size: 12px; }

/* ===== 徽标 ===== */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 500;
}

.badge-in { background: var(--success-light); color: var(--success); }
.badge-out { background: var(--primary-light); color: var(--primary); }
.badge-loss { background: var(--danger-light); color: var(--danger); }

/* ===== 品种库存条形图 ===== */
.species-bars { display: flex; flex-direction: column; gap: 12px; }

.bar-item { }

.bar-label {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    margin-bottom: 4px;
}

.bar-value { font-weight: 600; color: var(--primary); }

.bar-track {
    height: 20px;
    background: var(--bg);
    border-radius: 10px;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), #60a5fa);
    border-radius: 10px;
    transition: width 0.5s ease;
    min-width: 2%;
}

/* ===== 弹窗 ===== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal.hidden { display: none; }

.modal-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.4);
}

.modal-content {
    position: relative;
    background: var(--card-bg);
    border-radius: var(--radius);
    width: 480px;
    max-width: 90vw;
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.modal-lg { width: 720px; }

.modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 { font-size: 16px; }

.modal-body { padding: 20px; }
.modal-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

/* ===== 提示消息 ===== */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2000;
    padding: 12px 20px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    animation: slideIn 0.3s ease;
}

.toast.hidden { display: none; }
.toast.success { background: var(--success); color: #fff; }
.toast.error { background: var(--danger); color: #fff; }

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

/* ===== 筛选栏 ===== */
.filter-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
}

.filter-bar select,
.filter-bar input {
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 13px;
}

/* ===== 空状态 ===== */
.empty-state {
    text-align: center;
    padding: 32px;
    color: var(--text-secondary);
    font-size: 14px;
}

.loading {
    text-align: center;
    padding: 20px;
    color: var(--text-secondary);
}

/* ===== 文字颜色 ===== */
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-primary { color: var(--primary); }

/* ===== 移动端顶部导航 ===== */
.mobile-header {
    display: none;
    background: var(--sidebar-bg);
    color: #fff;
    padding: 12px 16px;
    position: sticky;
    top: 0;
    z-index: 60;
    align-items: center;
    justify-content: space-between;
}

.mobile-header-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.mobile-brand {
    font-size: 15px;
    font-weight: 700;
}

.hamburger {
    background: none;
    border: none;
    color: #fff;
    font-size: 22px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
}

.hamburger:hover {
    background: rgba(255,255,255,0.1);
}

/* 移动端侧边栏遮罩 */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 99;
}

.sidebar-overlay.active { display: block; }

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .mobile-header { display: flex; }

    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 100;
    }

    .sidebar.open { transform: translateX(0); }

    .content { margin-left: 0; }

    .page-header { top: 0; }

    .stats-grid { grid-template-columns: 1fr 1fr; }

    .dashboard-grid { grid-template-columns: 1fr; }

    .form-row { grid-template-columns: 1fr; }

    .species-list { grid-template-columns: 1fr; }

    .page-body { padding: 16px; }

    .stat-card { padding: 14px; }

    .stat-value { font-size: 20px; }

    .table { font-size: 12px; }
    .table th, .table td { padding: 6px 8px; }

    .species-actions { flex-wrap: wrap; }

    .modal-content { width: 95vw; }
    .modal-lg { width: 95vw; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }

    .stat-card { padding: 12px; }

    .stat-value { font-size: 18px; }

    .card-header { padding: 12px 14px; flex-wrap: wrap; gap: 8px; }
    .card-body { padding: 14px; }

    .btn { padding: 6px 12px; font-size: 12px; }

    .header-actions { flex-wrap: wrap; }
}