/* ============================================
   IPC预审分类查询工具 - 样式
   ============================================ */

/* ---- CSS Variables ---- */
:root {
    --primary: #1565c0;
    --primary-light: #1976d2;
    --primary-dark: #0d47a1;
    --primary-bg: #e3f2fd;
    --accent: #00897b;
    --accent-light: #e0f2f1;
    --success: #2e7d32;
    --success-light: #e8f5e9;
    --warning: #e65100;
    --warning-light: #fff3e0;
    --danger: #c62828;
    --danger-light: #ffebee;
    --info: #0277bd;
    --info-light: #e1f5fe;
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #eeeeee;
    --gray-300: #e0e0e0;
    --gray-400: #bdbdbd;
    --gray-500: #9e9e9e;
    --gray-600: #757575;
    --gray-700: #616161;
    --gray-800: #424242;
    --gray-900: #212121;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.1);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --transition: all 0.2s ease;
    --max-width: 1100px;
}

/* ---- Reset ---- */
* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
    background: var(--gray-100);
    color: var(--gray-800);
    font-size: 14px;
    line-height: 1.6;
    min-height: 100vh;
}

/* ---- Header ---- */
.header {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
    color: #fff;
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}
.header-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 14px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}
.logo i {
    font-size: 28px;
    opacity: 0.9;
}
.logo h1 {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 1px;
}
.logo-sub {
    font-size: 12px;
    opacity: 0.8;
    letter-spacing: 0.5px;
}
.header-stats {
    display: flex;
    gap: 20px;
}
.stat-item {
    text-align: center;
}
.stat-num {
    display: block;
    font-size: 20px;
    font-weight: 700;
}
.stat-label {
    font-size: 11px;
    opacity: 0.8;
}

/* ---- Tab Nav ---- */
.tab-nav {
    background: #fff;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    position: sticky;
    top: 58px;
    z-index: 99;
}
.tab-btn {
    flex: 1;
    padding: 12px 16px;
    border: none;
    background: transparent;
    font-size: 14px;
    color: var(--gray-600);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-weight: 500;
    border-bottom: 3px solid transparent;
}
.tab-btn:hover {
    color: var(--primary);
    background: var(--primary-bg);
}
.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    background: var(--primary-bg);
}

/* ---- Tab Content ---- */
.tab-content {
    display: none;
    padding: 16px 0 40px;
}
.tab-content.active {
    display: block;
}
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 16px;
}

/* ---- Filter Bar ---- */
.filter-bar {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
}
.search-box {
    flex: 1;
    min-width: 200px;
    position: relative;
}
.search-box i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
}
.search-box input {
    width: 100%;
    padding: 10px 36px 10px 38px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: var(--transition);
    outline: none;
}
.search-box input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(21, 101, 192, 0.1);
}
.clear-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--gray-400);
    cursor: pointer;
    padding: 4px;
    font-size: 12px;
}
.clear-btn:hover { color: var(--gray-600); }

.filter-select {
    position: relative;
    min-width: 140px;
}
.filter-select i {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
    font-size: 12px;
    z-index: 1;
    pointer-events: none;
}
.filter-select select {
    width: 100%;
    padding: 10px 12px 10px 30px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 13px;
    background: #fff;
    cursor: pointer;
    outline: none;
    appearance: auto;
}
.filter-select select:focus {
    border-color: var(--primary);
}

.result-count {
    font-size: 13px;
    color: var(--gray-500);
    white-space: nowrap;
}

/* ---- Card ---- */
.card {
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin-bottom: 16px;
    border: 1px solid var(--gray-200);
}
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 18px;
    border-bottom: 1px solid var(--gray-200);
    background: var(--gray-50);
}
.card-header h2 {
    font-size: 15px;
    font-weight: 600;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 8px;
}
.card-body { padding: 18px; }

/* ---- Badge ---- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
}
.badge-info { background: var(--info-light); color: var(--info); }
.badge-primary { background: var(--primary-bg); color: var(--primary); }
.badge-success { background: var(--success-light); color: var(--success); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-accent { background: var(--accent-light); color: var(--accent); }
.badge-gray { background: var(--gray-200); color: var(--gray-600); }

/* ---- Center Card ---- */
.center-card {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    margin-bottom: 10px;
    transition: var(--transition);
    overflow: hidden;
}
.center-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}
.center-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    cursor: pointer;
    gap: 10px;
}
.center-main {
    flex: 1;
    min-width: 0;
}
.center-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.center-name .region-tag {
    font-size: 11px;
    font-weight: 500;
    background: var(--primary-bg);
    color: var(--primary);
    padding: 1px 6px;
    border-radius: 3px;
}
.center-meta {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
}
.center-meta .field-tag {
    font-size: 12px;
    color: var(--accent);
    background: var(--accent-light);
    padding: 1px 6px;
    border-radius: 3px;
}
.center-meta .auth-time {
    font-size: 12px;
    color: var(--warning);
    background: var(--warning-light);
    padding: 1px 6px;
    border-radius: 3px;
}
.center-meta .ipc-count {
    font-size: 12px;
    color: var(--gray-500);
}
.center-right {
    display: flex;
    align-items: center;
    gap: 8px;
}
.center-expand {
    background: none;
    border: none;
    color: var(--gray-400);
    cursor: pointer;
    padding: 6px;
    border-radius: 50%;
    transition: var(--transition);
    font-size: 14px;
}
.center-expand:hover {
    background: var(--gray-100);
    color: var(--primary);
}
.center-expand.expanded {
    transform: rotate(180deg);
    color: var(--primary);
}
.detail-btn {
    padding: 6px 12px;
    border: 1px solid var(--primary);
    background: transparent;
    color: var(--primary);
    border-radius: var(--radius-sm);
    font-size: 12px;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}
.detail-btn:hover {
    background: var(--primary);
    color: #fff;
}

/* ---- Center Expanded IPC ---- */
.center-detail {
    display: none;
    padding: 12px 16px 16px;
    border-top: 1px solid var(--gray-200);
    background: var(--gray-50);
    animation: slideDown 0.2s ease;
}
.center-detail.show { display: block; }

@keyframes slideDown {
    from { opacity: 0; max-height: 0; }
    to { opacity: 1; max-height: 2000px; }
}

.ipc-group {
    margin-bottom: 10px;
}
.ipc-group-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 4px;
}
.ipc-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}
.ipc-tag {
    display: inline-block;
    padding: 3px 8px;
    background: #fff;
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
    color: var(--gray-700);
    font-family: 'Courier New', monospace;
    transition: var(--transition);
    cursor: pointer;
}
.ipc-tag:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-bg);
}
/* IPC标签中文解释样式 */
.ipc-tag-desc {
    font-size: 11px;
    font-weight: 400;
    color: var(--gray-500);
    font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    margin-left: 4px;
}

.center-source {
    margin-top: 10px;
    font-size: 12px;
    color: var(--gray-500);
}
.center-source a {
    color: var(--primary);
    text-decoration: none;
}
.center-source a:hover { text-decoration: underline; }

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 18px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    line-height: 1.4;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
}
.btn-primary:hover {
    background: var(--primary-light);
    box-shadow: 0 2px 8px rgba(21,101,192,0.3);
}
.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}
.btn-recommend {
    width: 100%;
    justify-content: center;
    padding: 12px;
    font-size: 15px;
    margin-top: 8px;
}

/* ---- Form ---- */
.form-group {
    margin-bottom: 12px;
}
.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 4px;
}
.required { color: var(--danger); }
.form-input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 14px;
    outline: none;
    transition: var(--transition);
}
.form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(21,101,192,0.1);
}
.form-textarea {
    resize: vertical;
    min-height: 60px;
    font-family: inherit;
}

/* ---- Recommend ---- */
.recommend-desc, .ipc-search-desc {
    font-size: 13px;
    color: var(--gray-600);
    margin-bottom: 16px;
    line-height: 1.6;
}
.recommend-form, .ipc-search-form {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: flex-end;
}
.recommend-form .form-group {
    flex: 1;
    min-width: 250px;
}
.ipc-search-form {
    gap: 12px;
}
.ipc-search-form .form-group {
    flex: 1;
    min-width: 200px;
}

/* ---- Recommend Results ---- */
.recommend-output-section {
    margin-bottom: 20px;
}
.recommend-output-section h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.ipc-match-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm);
    margin-bottom: 6px;
    background: #fff;
}
.ipc-match-code {
    font-family: 'Courier New', monospace;
    font-size: 14px;
    font-weight: 700;
    color: var(--primary);
    min-width: 50px;
}
.ipc-match-score {
    font-size: 12px;
    color: var(--gray-500);
}
.ipc-match-keywords {
    font-size: 12px;
    color: var(--gray-600);
}
.ipc-match-keywords span {
    display: inline-block;
    background: var(--gray-100);
    padding: 1px 6px;
    border-radius: 3px;
    margin: 1px 2px;
}

.center-recommend-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    background: #fff;
    transition: var(--transition);
}
.center-recommend-item:hover {
    box-shadow: var(--shadow-sm);
    border-color: var(--primary);
}
.center-recommend-name {
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 2px;
}
.center-recommend-meta {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    align-items: center;
}
.center-recommend-ipc {
    font-size: 12px;
    color: var(--primary);
    font-family: 'Courier New', monospace;
}

/* ---- Empty State ---- */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--gray-400);
}
.empty-state i {
    font-size: 40px;
    margin-bottom: 10px;
}
.empty-state p {
    font-size: 14px;
}

/* ---- Modal ---- */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 1000;
    justify-content: center;
    align-items: flex-start;
    padding: 40px 16px;
    overflow-y: auto;
}
.modal-overlay.show {
    display: flex;
}
.modal {
    background: #fff;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 700px;
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.25s ease;
}
@keyframes modalIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--gray-200);
    background: var(--gray-50);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.modal-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-800);
}
.modal-close {
    background: none;
    border: none;
    color: var(--gray-500);
    cursor: pointer;
    padding: 4px;
    font-size: 18px;
    border-radius: 50%;
    transition: var(--transition);
}
.modal-close:hover {
    background: var(--gray-200);
    color: var(--gray-800);
}
.modal-body {
    padding: 20px;
}

/* ---- Modal Detail ---- */
.detail-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 16px;
}
.detail-info-item {
    padding: 10px;
    background: var(--gray-50);
    border-radius: var(--radius-sm);
}
.detail-info-label {
    font-size: 12px;
    color: var(--gray-500);
    margin-bottom: 2px;
}
.detail-info-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-800);
}
.detail-section-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-800);
    margin: 16px 0 8px;
    padding-top: 12px;
    border-top: 1px solid var(--gray-200);
}
.detail-ipc-group {
    margin-bottom: 10px;
}
.detail-ipc-group-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
}
.detail-field-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
}
.detail-ipc-count {
    font-size: 12px;
    color: var(--gray-500);
}

/* ---- Loading ---- */
.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 30px;
    color: var(--gray-400);
}
.loading-spinner i { font-size: 24px; }

/* ---- Toast ---- */
.toast-container {
    position: fixed;
    top: 70px;
    right: 16px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.toast {
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    box-shadow: var(--shadow-md);
    animation: toastIn 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    max-width: 320px;
}
.toast-success { background: var(--success); color: #fff; }
.toast-error { background: var(--danger); color: #fff; }
.toast-info { background: var(--info); color: #fff; }
@keyframes toastIn {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}

/* ---- Footer ---- */
.footer {
    text-align: center;
    padding: 16px;
    font-size: 12px;
    color: var(--gray-400);
    border-top: 1px solid var(--gray-200);
    background: #fff;
}

/* ---- No Results Highlight ---- */
.no-results {
    text-align: center;
    padding: 40px 20px;
    color: var(--gray-400);
}
.no-results i {
    font-size: 36px;
    margin-bottom: 8px;
    display: block;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }
    .header-stats { gap: 14px; }
    .stat-num { font-size: 16px; }
    .filter-bar { flex-direction: column; }
    .search-box { min-width: 100%; }
    .filter-select { min-width: 100%; }
    .center-header { flex-direction: column; align-items: flex-start; }
    .center-right { align-self: flex-end; }
    .recommend-form .form-group { min-width: 100%; }
    .detail-info-grid { grid-template-columns: 1fr; }
    .center-recommend-item { flex-direction: column; align-items: flex-start; }
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--gray-400); }

/* IPC标签悬停提示样式 */
.ipc-tag[title] {
    cursor: help;
    position: relative;
}

.ipc-tag:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-1px);
}