/* ===== 合力云肉牛养殖管理系统 - 全局样式 ===== */
/* 手机优先适配，暗色主题 */

:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --success: #16a34a;
    --danger: #dc2626;
    --warning: #d97706;
    --bg-dark: #1a1a2e;
    --bg-card: #16213e;
    --bg-input: #0f3460;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border: #334155;
    --radius: 8px;
    --shadow: 0 2px 8px rgba(0,0,0,0.3);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    font-size: 18px;
    line-height: 1.7;
}

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

/* ===== 登录页 ===== */
.login-wrap {
    max-width: 400px; margin: 60px auto; padding: 30px 20px;
}
.login-card {
    background: var(--bg-card); border-radius: 12px; padding: 30px;
    box-shadow: var(--shadow);
}
.login-card h1 { font-size: 22px; text-align: center; margin-bottom: 8px; }
.login-card p { text-align: center; color: var(--text-secondary); margin-bottom: 24px; font-size: 14px; }

/* ===== 表单 ===== */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 500; color: var(--text-secondary); font-size: 16px; }
.form-control {
    width: 100%; padding: 12px 14px; border: 1px solid var(--border);
    border-radius: var(--radius); background: var(--bg-input); color: var(--text-primary);
    font-size: 18px; transition: border-color 0.2s;
}
.form-control:focus { outline: none; border-color: var(--primary); }
select.form-control { cursor: pointer; }
textarea.form-control { min-height: 80px; resize: vertical; }

/* ===== 按钮 ===== */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    padding: 10px 20px; border: none; border-radius: var(--radius);
    font-size: 17px; font-weight: 500; cursor: pointer; transition: all 0.2s;
    text-decoration: none; white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); text-decoration: none; }
.btn-success { background: var(--success); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text-primary); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-sm { padding: 6px 12px; font-size: 15px; }
.btn-lg { padding: 14px 28px; font-size: 19px; width: 100%; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ===== 布局 ===== */
.admin-layout { display: flex; min-height: 100vh; }
.admin-sidebar {
    width: 220px; background: var(--bg-card); padding: 20px 0;
    position: fixed; top: 0; left: 0; bottom: 0; overflow-y: auto; z-index: 100;
}
.admin-sidebar .logo { padding: 0 20px 20px; font-size: 20px; font-weight: 700; border-bottom: 1px solid var(--border); }
.admin-sidebar nav { padding: 12px 0; }
.admin-sidebar nav a {
    display: block; padding: 12px 20px; color: var(--text-secondary);
    font-size: 16px; text-decoration: none; transition: all 0.2s;
}
.admin-sidebar nav a:hover, .admin-sidebar nav a.active {
    background: var(--bg-input); color: var(--primary); border-left: 3px solid var(--primary);
}

/* 子菜单项：与父项左对齐平铺，无任何前缀符号，跨电脑字体一致 */
.admin-sidebar nav a.sub {
    padding: 10px 20px; font-size: 14px;
    color: var(--text-muted);
    border-left: 3px solid transparent;
}
.admin-sidebar nav a.sub:hover,
.admin-sidebar nav a.sub.active {
    color: var(--primary);
}
.admin-sidebar nav .nav-section { padding: 10px 20px 4px; font-size: 13px; color: var(--text-muted); text-transform: uppercase; }

.admin-main { flex: 1; margin-left: 220px; padding: 20px 24px; }
.admin-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.admin-header h2 { font-size: 22px; }
.admin-header .user-info { font-size: 16px; color: var(--text-secondary); }

/* ===== 移动端布局 ===== */
.mobile-wrap { max-width: 600px; margin: 0 auto; padding: 12px; }
.mobile-header { display: flex; justify-content: space-between; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--border); margin-bottom: 16px; }
.mobile-header h1 { font-size: 20px; }
.mobile-nav { display: flex; gap: 8px; margin-bottom: 16px; }
.mobile-nav a { flex: 1; text-align: center; padding: 10px; border-radius: var(--radius); background: var(--bg-card); color: var(--text-secondary); font-size: 14px; text-decoration: none; }
.mobile-nav a.active { background: var(--primary); color: #fff; }

/* ===== 卡片 ===== */
.card { background: var(--bg-card); border-radius: var(--radius); padding: 20px; margin-bottom: 16px; box-shadow: var(--shadow); }
.card-title { font-size: 18px; font-weight: 600; margin-bottom: 12px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }

/* ===== 统计卡片 ===== */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin-bottom: 20px; }
.stat-card { background: var(--bg-card); border-radius: var(--radius); padding: 16px; text-align: center; }
.stat-card .stat-value { font-size: 32px; font-weight: 700; color: var(--primary); }
.stat-card .stat-label { font-size: 15px; color: var(--text-secondary); margin-top: 4px; }

/* ===== 表格 ===== */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 16px; }
th, td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--border); }
th { color: var(--text-secondary); font-weight: 600; white-space: nowrap; }
td { color: var(--text-primary); }
tr:hover { background: rgba(37, 99, 235, 0.05); }

/* ===== 标签 ===== */
.tag { display: inline-block; padding: 3px 10px; border-radius: 4px; font-size: 14px; font-weight: 500; }
.tag-success { background: rgba(22, 163, 74, 0.2); color: var(--success); }
.tag-danger { background: rgba(220, 38, 38, 0.2); color: var(--danger); }
.tag-warning { background: rgba(217, 119, 6, 0.2); color: var(--warning); }
.tag-info { background: rgba(37, 99, 235, 0.2); color: var(--primary); }
.tag-muted { background: rgba(100, 116, 139, 0.2); color: var(--text-muted); }

/* ===== 饲喂录入表单（手机端放大） ===== */
.feed-form { background: var(--bg-card); border-radius: 12px; padding: 20px; }
.feed-item { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.feed-item label { flex: 0 0 100px; font-size: 16px; }
.feed-item input { flex: 1; padding: 14px; font-size: 18px; }

/* ===== 提示 ===== */
.alert { padding: 12px 16px; border-radius: var(--radius); margin-bottom: 16px; font-size: 16px; }
.alert-info { background: rgba(37, 99, 235, 0.1); border: 1px solid rgba(37, 99, 235, 0.3); color: var(--primary); }
.alert-warning { background: rgba(217, 119, 6, 0.1); border: 1px solid rgba(217, 119, 6, 0.3); color: var(--warning); }
.alert-danger { background: rgba(220, 38, 38, 0.1); border: 1px solid rgba(220, 38, 38, 0.3); color: var(--danger); }

/* ===== 分页 ===== */
.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 16px; }
.pagination a, .pagination span { padding: 8px 14px; border-radius: var(--radius); background: var(--bg-card); font-size: 16px; }
.pagination .current { background: var(--primary); color: #fff; }

/* ===== 隐私协议 ===== */
.privacy-footer { text-align: center; padding: 20px 0; font-size: 14px; color: var(--text-muted); border-top: 1px solid var(--border); margin-top: 30px; }
.privacy-footer a { color: var(--text-muted); }

/* ===== 移动端顶部栏 ===== */
.mobile-topbar { display: none; }

/* ===== 侧边栏遮罩层 ===== */
.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.show { display: block; }

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    /* 移动端顶部栏 */
    .mobile-topbar {
        display: flex; align-items: center; gap: 12px;
        padding: 10px 14px; background: var(--bg-card);
        border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 50;
    }
    .mobile-topbar .hamburger {
        background: none; border: none; color: var(--text-primary);
        font-size: 24px; cursor: pointer; padding: 4px 8px; line-height: 1;
    }
    .mobile-topbar-title { flex: 1; font-size: 19px; font-weight: 600; }
    .mobile-topbar-user { font-size: 15px; color: var(--text-secondary); }

    /* 侧边栏变成抽屉 */
    .admin-sidebar {
        transform: translateX(-100%); transition: transform 0.3s ease;
        width: 260px;
    }
    .admin-sidebar.open { transform: translateX(0); }

    .admin-main { margin-left: 0; padding: 12px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .btn-lg { font-size: 18px; }

    /* 表格横向滚动 */
    .table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }

    /* 表单输入框更大 */
    .form-control { font-size: 18px; padding: 14px; }

    /* 卡片间距缩小 */
    .card { padding: 14px; margin-bottom: 12px; }

    /* 按钮全宽 */
    .btn-lg { width: 100%; }

    /* 统计数字缩小 */
    .stat-card .stat-value { font-size: 26px; }

    /* 管理端头部隐藏（移动端用顶部栏替代） */
    .admin-header { display: none; }
}