/* ========================================
   健康产品进销存管理系统 - 样式表
   ======================================== */

:root {
    --primary: #2c7be5;
    --primary-dark: #1a68d1;
    --success: #00d97e;
    --warning: #f6c343;
    --danger: #e63757;
    --info: #39afd1;
    --dark: #12263f;
    --gray-100: #f9fbfd;
    --gray-200: #edf2f9;
    --gray-300: #d2ddec;
    --gray-500: #6e84a3;
    --gray-700: #384c74;
    --sidebar-w: 230px;
    --header-h: 56px;
    --radius: 8px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 14px;
    color: var(--dark);
    background: var(--gray-100);
    min-height: 100vh;
}

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

/* ---- Sidebar ---- */
.sidebar {
    position: fixed; top: 0; left: 0; bottom: 0;
    width: var(--sidebar-w); background: var(--dark); color: #fff;
    z-index: 100; overflow-y: auto;
    transition: width .25s ease;
}
.sidebar.collapsed { width: 60px; }
.sidebar-logo {
    padding: 18px 20px; font-size: 17px; font-weight: 700;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    display: flex; align-items: center; gap: 10px;
    white-space: nowrap; overflow: hidden;
}
.sidebar.collapsed .sidebar-logo { padding: 16px 0; justify-content: center; }
.sidebar.collapsed .sidebar-logo .logo-text { display: none; }
.sidebar-logo .icon { font-size: 22px; flex-shrink: 0; }
.sidebar-logo .logo-img {
    height: 55px; width: auto; max-width: 100%;
    object-fit: contain; display: block;
}
.sidebar.collapsed .sidebar-logo .logo-img { height: 26px; max-width: 46px; }
.sidebar-user {
    padding: 14px 20px; font-size: 13px; color: rgba(255,255,255,0.65);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    white-space: nowrap; overflow: hidden;
}
.sidebar.collapsed .sidebar-user { display: none; }
.sidebar-user strong { color: #fff; display: block; margin-bottom: 2px; }
.sidebar-nav { padding: 10px 0; }
.sidebar-nav .nav-group { margin-bottom: 4px; }
.sidebar-nav .nav-group-title {
    padding: 14px 20px 6px; font-size: 14px; font-weight: 700;
    color: rgba(255,255,255,0.92); letter-spacing: 0.5px;
    white-space: nowrap; overflow: hidden;
    cursor: pointer; display: flex; justify-content: space-between; align-items: center;
    user-select: none;
}
.sidebar-nav .nav-group-title:hover { color: #ffffff; }
.nav-group-arrow { font-size: 11px; transition: transform .2s; }
.nav-group.group-open .nav-group-arrow { transform: rotate(90deg); }
.nav-group-items { overflow: hidden; max-height: 0; transition: max-height .25s ease; }
.nav-group.group-open .nav-group-items { max-height: 500px; }
.sidebar.collapsed .sidebar-nav .nav-group-title { display: none; }
.sidebar-nav a {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 20px; color: rgba(255,255,255,0.7); font-size: 14px;
    transition: all .15s; border-left: 3px solid transparent;
    white-space: nowrap; overflow: hidden; position: relative;
}
.sidebar.collapsed .sidebar-nav a { padding: 10px 0; justify-content: center; }
.sidebar.collapsed .sidebar-nav a .nav-label { display: none; }
.sidebar-nav a:hover { background: rgba(255,255,255,0.06); color: #fff; text-decoration: none; }
.sidebar-nav a.active { color: #fff; background: rgba(255,255,255,0.08); border-left-color: var(--primary); }
.sidebar-nav a .nav-icon { font-size: 16px; width: 20px; text-align: center; flex-shrink: 0; }
/* 折叠状态 tooltip */
.sidebar.collapsed .sidebar-nav a:hover::after {
    content: attr(data-label); position: absolute; left: 60px; top: 50%; transform: translateY(-50%);
    background: #000; color: #fff; padding: 4px 10px; border-radius: 4px; font-size: 13px;
    white-space: nowrap; z-index: 200;
}

/* ---- Header ---- */
.header {
    position: fixed; top: 0; left: var(--sidebar-w); right: 0;
    height: var(--header-h); background: #fff; border-bottom: 1px solid var(--gray-300);
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 24px; z-index: 99;
    transition: left .25s ease;
}
.sidebar.collapsed ~ .header { left: 60px; }
.header-left { display: flex; align-items: center; gap: 12px; }
.sidebar-toggle {
    background: none; border: none; font-size: 20px; cursor: pointer;
    color: var(--gray-500); padding: 4px 8px; border-radius: 4px; line-height: 1;
}
.sidebar-toggle:hover { background: var(--gray-200); color: var(--gray-700); }
.header-title { font-size: 16px; font-weight: 600; }
.header-actions { display: flex; align-items: center; gap: 16px; }
.header-actions .btn { font-size: 13px; }

/* ---- Main ---- */
.main {
    margin-left: var(--sidebar-w); padding-top: var(--header-h);
    padding: calc(var(--header-h) + 20px) 24px 40px 24px;
    transition: margin-left .25s ease;
}
.sidebar.collapsed ~ .main { margin-left: 60px; }

/* ---- Card ---- */
.card {
    background: #fff; border-radius: var(--radius);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05); border: 1px solid var(--gray-300);
}
.card-header {
    padding: 16px 20px; border-bottom: 1px solid var(--gray-200);
    display: flex; align-items: center; justify-content: space-between;
    font-weight: 600; font-size: 15px;
}
.card-body { padding: 20px; }
.card-footer { padding: 12px 20px; border-top: 1px solid var(--gray-200); }

/* ---- Stats ---- */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card {
    background: #fff; border-radius: var(--radius); padding: 20px;
    border: 1px solid var(--gray-300); box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    display: flex; align-items: center; gap: 16px;
}
.stat-icon {
    width: 48px; height: 48px; border-radius: 12px; display: flex;
    align-items: center; justify-content: center; font-size: 22px;
}
.stat-icon.blue   { background: #e6f0fd; color: var(--primary); }
.stat-icon.green  { background: #e6faf2; color: var(--success); }
.stat-icon.orange { background: #fef5e4; color: var(--warning); }
.stat-icon.red    { background: #fde8ed; color: var(--danger); }
.stat-info .stat-value { font-size: 24px; font-weight: 700; }
.stat-info .stat-label { font-size: 13px; color: var(--gray-500); margin-top: 2px; }

/* ---- Buttons ---- */
.btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 16px; border-radius: 6px; font-size: 14px; font-weight: 500;
    cursor: pointer; border: 1px solid transparent; transition: all .15s;
    line-height: 1.4; white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { opacity: 0.9; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { opacity: 0.9; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-outline { background: #fff; color: var(--gray-700); border-color: var(--gray-300); }
.btn-outline:hover { background: var(--gray-100); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-xs { padding: 2px 8px; font-size: 11px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ---- Form ---- */
.form-group { margin-bottom: 16px; }
.form-label { display: block; margin-bottom: 6px; font-weight: 500; font-size: 13px; color: var(--gray-700); }
.form-control {
    width: 100%; padding: 8px 12px; border: 1px solid var(--gray-300);
    border-radius: 6px; font-size: 14px; transition: border-color .15s;
    background: #fff; color: var(--dark);
}
.form-control:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(44,123,229,0.1); }
select.form-control { cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 60px; }
.form-inline { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; }
.form-inline .form-group { margin-bottom: 0; }
.form-inline .form-control { width: auto; }

/* ---- Table ---- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
table th, table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--gray-200); font-size: 13px; }
table th { background: var(--gray-100); font-weight: 600; color: var(--gray-700); white-space: nowrap; }
table tbody tr:hover { background: var(--gray-100); }
table .text-right { text-align: right; }
table .text-center { text-align: center; }

/* ---- Badge ---- */
.badge {
    display: inline-block; padding: 2px 8px; border-radius: 4px;
    font-size: 11px; font-weight: 500;
}
.badge-success { background: #e6faf2; color: #009a5a; }
.badge-warning { background: #fef5e4; color: #b8860b; }
.badge-danger  { background: #fde8ed; color: #c0392b; }
.badge-info    { background: #e6f0fd; color: #1a68d1; }
.badge-gray    { background: var(--gray-200); color: var(--gray-500); }

/* ---- Alert ---- */
.alert {
    padding: 12px 16px; border-radius: 6px; margin-bottom: 16px; font-size: 13px;
}
.alert-info { background: #e6f0fd; color: #1a68d1; border: 1px solid #c4dbf9; }
.alert-success { background: #e6faf2; color: #009a5a; border: 1px solid #b8f0d7; }
.alert-danger { background: #fde8ed; color: #c0392b; border: 1px solid #f7c9d4; }
.alert-warning { background: #fef5e4; color: #b8860b; border: 1px solid #fde3a0; }

/* ---- Modal ---- */
.modal-overlay {
    display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.45);
    z-index: 1000; align-items: center; justify-content: center;
}
.modal-overlay.show { display: flex; }
.modal {
    background: #fff; border-radius: var(--radius); width: 90%; max-width: 700px;
    max-height: 85vh; overflow-y: auto; box-shadow: 0 10px 40px rgba(0,0,0,0.15);
}
.modal.modal-lg { max-width: 950px; }
.modal-header {
    padding: 16px 20px; border-bottom: 1px solid var(--gray-200);
    display: flex; align-items: center; justify-content: space-between;
    font-weight: 600; font-size: 16px;
}
.modal-close { background: none; border: none; font-size: 20px; cursor: pointer; color: var(--gray-500); }
.modal-close:hover { color: var(--dark); }
.modal-body { padding: 20px; }
.modal-footer {
    padding: 12px 20px; border-top: 1px solid var(--gray-200);
    display: flex; justify-content: flex-end; gap: 8px;
}

/* ---- Pagination ---- */
.pagination { display: flex; gap: 4px; justify-content: center; align-items: center; margin-top: 20px; flex-wrap: wrap; }
.pagination a, .pagination span {
    padding: 6px 12px; border-radius: 4px; font-size: 13px;
    border: 1px solid var(--gray-300); color: var(--gray-700);
    cursor: pointer; transition: all .15s; white-space: nowrap;
}
.pagination a:hover { background: var(--gray-100); text-decoration: none; }
.pagination .active { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination .disabled { color: var(--gray-300); pointer-events: none; cursor: default; }
.pagination .ellipsis { border: none; color: var(--gray-500); padding: 6px 4px; cursor: default; }
.pagination .page-info { border: none; color: var(--gray-500); font-size: 12px; padding: 6px 8px; margin-left: 8px; }

/* ---- Login ---- */
.login-page {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, #2c7be5 0%, #1a68d1 100%);
}
.login-box {
    background: #fff; border-radius: 12px; padding: 40px; width: 380px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}
.login-box h1 { text-align: center; margin-bottom: 8px; font-size: 22px; }
.login-box .subtitle { text-align: center; color: var(--gray-500); margin-bottom: 28px; font-size: 13px; }
.login-logo {
    text-align: center; margin-bottom: 18px;
    background: var(--dark); border-radius: 10px; padding: 18px 16px;
}
.login-logo img { height: 44px; width: auto; max-width: 100%; object-fit: contain; }

/* ---- Toast ---- */
.toast-container { position: fixed; top: 20px; right: 20px; z-index: 9999; }
.toast {
    padding: 12px 20px; border-radius: 6px; margin-bottom: 8px; font-size: 14px;
    color: #fff; animation: slideIn .3s ease; box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    max-width: 360px;
}
.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }
.toast-info { background: var(--info); }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ---- Empty state ---- */
.empty { text-align: center; padding: 40px; color: var(--gray-500); }
.empty .icon { font-size: 48px; margin-bottom: 12px; }

/* ---- Loading ---- */
.loading { text-align: center; padding: 40px; color: var(--gray-500); }
.spinner { display: inline-block; width: 24px; height: 24px; border: 2px solid var(--gray-300); border-top-color: var(--primary); border-radius: 50%; animation: spin .6s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Grid for forms ---- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }

/* ---- Tabs ---- */
.tabs { display: flex; border-bottom: 2px solid var(--gray-200); margin-bottom: 20px; }
.tab { padding: 10px 20px; cursor: pointer; color: var(--gray-500); font-weight: 500; border-bottom: 2px solid transparent; margin-bottom: -2px; }
.tab:hover { color: var(--dark); }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); }

/* ---- Search bar ---- */
.search-bar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 16px; }
.search-bar .form-control { width: 220px; }

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.mobile-open { transform: translateX(0); }
    .header { left: 0; }
    .main { margin-left: 0; }
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
}