/* Kanban board, entrance animations, and responsive breakpoints */

        /* ================================================
           KANBAN — Refined column style
           ================================================ */
        .kanban-container {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .kanban-container > .kanban {
            flex: 1 1 240px;
            min-width: 0;
        }

        .kanban {
            background: var(--bg-surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            display: flex;
            flex-direction: column;
            transition: all var(--transition-base);
            height: calc(100vh - 260px);
            min-height: 400px;
            box-shadow: var(--shadow-sm);
        }

        .kanban:hover {
            border-color: var(--border-default);
            box-shadow: var(--shadow-md);
        }

        .kanban-header {
            padding: 16px 18px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            border-bottom: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(180deg, var(--bg-elevated), var(--bg-surface));
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }

        .kanban-header .kanban-icon {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            box-shadow: 0 0 6px currentColor;
        }

        .kanban-header.physics .kanban-icon { background: var(--accent); color: var(--accent); }
        .kanban-header.history .kanban-icon { background: var(--yellow); color: var(--yellow); }
        .kanban-header.female .kanban-icon { background: var(--red); color: var(--red); }
        .kanban-header.female-history .kanban-icon { background: var(--gold); color: var(--gold); }

        .kanban-header .kanban-label {
            font-size: 12px;
            color: var(--text-tertiary);
            margin-left: auto;
            font-weight: 400;
            letter-spacing: 0.3px;
        }

        .kanban-body {
            padding: 8px;
            flex: 1;
            min-height: 0;
            overflow-y: auto;
            overflow-x: hidden;
            background-color: transparent;
        }

        .major-item {
            background: var(--bg-elevated);
            border: 1px solid var(--border-subtle);
            margin-bottom: 6px;
            padding: 10px 14px;
            border-radius: var(--radius-md);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            position: relative;
        }

        .major-item:hover {
            border-color: var(--border-default);
            background: var(--bg-hover);
            color: var(--text-primary);
            transform: translateX(2px);
        }

        .major-item:active {
            cursor: grabbing;
            transform: scale(0.98);
        }

        .major-item.highlight-duplicate {
            border-color: var(--red) !important;
            background: var(--red-muted) !important;
            color: var(--red) !important;
            animation: highlight-pulse 0.5s ease-in-out 3;
        }

        @keyframes highlight-pulse {
            0%, 100% { box-shadow: 0 0 0 0 rgba(240, 96, 96, 0); }
            50% { box-shadow: 0 0 8px 2px rgba(240, 96, 96, 0.3); }
        }

        .pref-spinner {
            width: 28px; height: 28px;
            border: 3px solid var(--border-subtle);
            border-top-color: var(--accent);
            border-radius: 50%;
            animation: pref-spin 0.8s linear infinite;
            margin: 0 auto;
        }
        @keyframes pref-spin { to { transform: rotate(360deg); } }

        .major-item .rank {
            font-size: 11px;
            color: var(--text-tertiary);
            font-weight: 600;
            min-width: 26px;
            font-variant-numeric: tabular-nums;
            letter-spacing: 0.3px;
        }

        .major-item .name {
            flex: 1;
            font-weight: 400;
        }

        .major-item .delete-btn {
            color: var(--text-tertiary);
            cursor: pointer;
            opacity: 0;
            transition: opacity var(--transition-fast), color var(--transition-fast);
            font-size: 12px;
            width: 22px;
            height: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 6px;
        }

        .major-item:hover .delete-btn {
            opacity: 1;
        }

        .major-item .delete-btn:hover {
            color: var(--red);
            background: var(--red-muted);
        }

        .avoid-major {
            background-color: var(--red-muted) !important;
            border-color: rgba(240, 96, 96, 0.2) !important;
        }

        .avoid-major:hover {
            background-color: rgba(240, 96, 96, 0.12) !important;
        }

        .avoid-major .name {
            color: var(--red) !important;
        }

        .avoid-major::after {
            content: "避雷";
            position: absolute;
            right: 40px;
            font-size: 10px;
            color: var(--red);
            background: var(--red-muted);
            border: 1px solid rgba(240, 96, 96, 0.15);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
            letter-spacing: 0.5px;
        }

        .add-major-box {
            padding: 12px 14px;
            border-top: 1px solid var(--border-subtle);
            background: var(--bg-elevated);
            display: flex;
            gap: 8px;
            align-items: center;
            flex-shrink: 0;
            min-width: 0;
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        }

        .add-major-box input {
            flex: 1;
            min-width: 0;
            background: var(--bg-surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            font-family: var(--font-sans);
            font-size: 13px;
            color: var(--text-primary);
            outline: none;
            transition: all var(--transition-fast);
        }

        .add-major-box input::placeholder {
            color: var(--text-tertiary);
        }

        .add-major-box input:hover {
            border-color: var(--border-default);
        }

        .add-major-box input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px var(--accent-muted);
        }

        .add-major-box .add-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 4px;
            padding: 8px 14px;
            font-family: var(--font-sans);
            font-size: 12px;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg-hover);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .add-major-box .add-btn:hover {
            background: var(--accent-muted);
            border-color: var(--accent);
            color: var(--accent);
        }

        .add-major-box .add-btn:active {
            transform: scale(0.97);
        }

        /* ================================================
           ENTRANCE ANIMATIONS
           ================================================ */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(12px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .form-section,
        .accent-panel,
        .action-bar,
        .kanban {
            animation: fadeInUp 0.4s ease both;
        }

        .form-section:nth-child(2) { animation-delay: 0.05s; }
        .form-section:nth-child(3) { animation-delay: 0.1s; }
        .action-bar { animation-delay: 0.15s; }

        /* ================================================
           RESPONSIVE — 移动端适配
           ================================================ */

        /* ── 平板及以下 (≤1200px) ──────────────────────── */
        @media (max-width: 1200px) {
            .kanban-container {
                flex-wrap: wrap;
            }
            .kanban-container > .kanban {
                flex: 1 1 calc(50% - 8px);
                min-width: 280px;
            }
        }

        /* ── 平板竖屏 (≤1024px) ──────────────────────── */
        @media (max-width: 1024px) {
            #app {
                padding: 24px 20px 56px;
            }

            .hero-banner h1 {
                font-size: 32px;
            }

            .hero-banner .hero-subtitle {
                font-size: 13px;
            }

            .form-section {
                padding: 18px 16px;
            }

            .form-row {
                grid-template-columns: 1fr 1fr;
                gap: 14px 20px;
            }

            .form-row:has(.score-display) {
                grid-template-columns: 1fr;
            }

            .kanban {
                height: 55vh;
                min-height: 320px;
            }

            .markdown-body {
                padding: 20px 18px !important;
                font-size: 14px;
            }
        }

        /* ── 手机 (≤768px) ────────────────────────────── */
        @media (max-width: 768px) {
            #app {
                max-width: 100%;
                padding: 12px 10px 48px;
                text-align: left;
            }

            /* ── 隐藏底层优先级配置 tab ── */
            #tab-kanban,
            .el-tabs__item[aria-controls="pane-kanban"] {
                display: none !important;
            }

            /* ── 英雄区精简 ── */
            .hero-banner {
                padding: 6px 0 10px;
                position: relative;
            }

            .hero-banner > .hero-controls,
            .hero-controls {
                position: static;
                display: flex;
                justify-content: center;
                flex-wrap: wrap;
                gap: 6px;
                margin-bottom: 10px;
            }

            .hero-banner .hero-title {
                flex-direction: column;
                gap: 4px;
            }

            .hero-banner .hero-title svg {
                width: 24px;
                height: 24px;
            }

            .hero-banner h1 {
                font-size: 22px;
                text-align: center;
            }

            .hero-banner h1 .brand-divider {
                height: 16px;
            }

            .hero-banner h1 .brand-tagline {
                letter-spacing: 2px;
            }

            .hero-banner .hero-subtitle {
                font-size: 11px;
                text-align: center;
                padding: 0 6px;
            }

            /* ── 表单区：全部单列、左对齐 ── */
            .form-section {
                padding: 12px 10px;
                margin-bottom: 10px;
                text-align: left;
            }

            .form-section-header {
                font-size: 13px;
                margin-bottom: 12px;
                padding-bottom: 10px;
            }

            .form-row {
                grid-template-columns: 1fr !important;
                gap: 10px;
                margin-bottom: 14px;
            }

            /* 强制覆盖内联 grid-template-columns */
            .form-row[style*="grid-template-columns"] {
                grid-template-columns: 1fr !important;
            }

            /* 清除内联 grid-column span */
            .form-row > div[style*="grid-column"] {
                grid-column: auto !important;
            }

            .form-field {
                width: 100%;
            }

            /* 所有 el-select / el-cascader / el-input-number 独占一行 */
            .form-field .el-select,
            .form-field .el-cascader,
            .form-field .el-input-number,
            .form-field .el-switch {
                width: 100% !important;
            }

            .form-field .el-select .el-select__wrapper,
            .form-field .el-cascader .el-cascader__wrapper {
                width: 100% !important;
            }

            .form-label {
                font-size: 13px;
                margin-bottom: 4px;
            }

            /* ── 分数控件：纵向堆叠 ── */
            .score-display {
                flex-direction: column !important;
                align-items: stretch !important;
                gap: 6px;
                padding: 10px;
                text-align: left;
            }

            .score-display .el-input-number--large {
                width: 100% !important;
            }

            .score-display .separator {
                display: none;
            }

            .score-display .score-range {
                text-align: center;
                font-size: 12px;
            }

            .score-display .score-range svg {
                display: none;
            }

            .score-display .label,
            .score-display .unit {
                text-align: left;
            }

            /* ── 偏好面板：单列 ── */
            .preference-panels,
            div[style*="grid-template-columns: 1fr 1fr"][style*="gap: 24px"] {
                grid-template-columns: 1fr !important;
                gap: 10px !important;
            }

            .accent-panel {
                padding: 12px 10px !important;
                margin-bottom: 8px;
            }

            .accent-panel .section-title {
                font-size: 13px;
            }

            .accent-panel .section-desc {
                font-size: 11px;
            }

            /* ── 标签页：隐藏箭头，触屏滑动 ── */
            .el-tabs__nav-prev,
            .el-tabs__nav-next {
                display: none !important;
            }

            .el-tabs__nav-wrap {
                overflow-x: auto !important;
                overflow-y: hidden !important;
                -webkit-overflow-scrolling: touch !important;
            }

            .el-tabs__nav-scroll {
                overflow-x: auto !important;
                overflow-y: hidden !important;
                -webkit-overflow-scrolling: touch !important;
            }

            .el-tabs__nav {
                white-space: nowrap !important;
                flex-wrap: nowrap !important;
                transform: none !important;
                transition: none !important;
            }

            .el-tabs__item {
                padding: 0 10px !important;
                font-size: 12px !important;
                flex-shrink: 0 !important;
            }

            .tab-label {
                gap: 3px;
                font-size: 12px;
            }

            .tab-label svg {
                width: 13px;
                height: 13px;
            }

            /* ── 操作栏 ── */
            .action-bar {
                padding: 14px 10px;
                gap: 10px;
            }

            .action-bar .action-buttons {
                flex-direction: column;
                width: 100%;
            }

            .action-bar .action-buttons .btn {
                width: 100%;
                justify-content: center;
            }

            .action-bar .action-hint {
                font-size: 11px;
            }

            .btn-lg {
                padding: 12px 18px;
                font-size: 14px;
                min-height: 48px;
            }

            /* ── 对话框 ── */
            .el-dialog {
                width: 94% !important;
                margin: 0 auto;
            }

            .el-dialog__header {
                padding: 14px 16px !important;
            }

            .el-dialog__body {
                padding: 14px 16px !important;
            }

            .el-dialog__footer {
                padding: 10px 16px !important;
            }

            /* ── 输入框防 iOS 缩放 ── */
            .el-input__inner,
            .el-select .el-input__inner,
            .el-cascader .el-input__inner {
                font-size: 16px !important;
            }

            /* ── Popover 适配 ── */
            .el-popover.el-popper,
            .el-popper {
                max-width: calc(100vw - 24px) !important;
                width: calc(100vw - 24px) !important;
            }

            /* ── 复选框组 ── */
            .el-checkbox-group {
                flex-direction: column !important;
                align-items: flex-start !important;
                gap: 6px;
            }

            /* 问号图标紧跟行业特色院校，不换行 */
            .el-checkbox-group .el-popover__reference-wrapper {
                display: inline-flex !important;
                align-items: center;
                flex-shrink: 0;
            }

            .el-checkbox-group svg[style*="vertical-align"] {
                display: inline-flex !important;
                flex-shrink: 0;
            }

            /* ── Tab 面板内联 padding ── */
            .el-tab-pane > div[style*="padding: 24px"] {
                padding: 10px 6px !important;
            }

            /* ── 使用手册 ── */
            .markdown-body {
                padding: 14px 10px !important;
                font-size: 13px;
                line-height: 1.65;
            }

            .markdown-body h1 { font-size: 18px !important; }
            .markdown-body h2 { font-size: 16px !important; }
            .markdown-body h3 { font-size: 14px !important; }
        }

        /* ── 小屏手机 (≤480px) ────────────────────────── */
        @media (max-width: 480px) {
            #app {
                padding: 10px 6px 36px;
            }

            .hero-banner h1 {
                font-size: 20px;
            }

            .form-section {
                padding: 10px 8px;
            }

            .form-section-header {
                font-size: 12px;
            }

            /* 触控友好 */
            .btn {
                min-height: 44px;
            }

            .el-input__inner,
            .el-select__wrapper,
            .el-cascader__wrapper {
                min-height: 44px !important;
            }

            .el-dialog {
                width: 96% !important;
            }

            .el-tabs__item {
                padding: 0 8px !important;
                font-size: 11px !important;
            }

            .markdown-body h1 { font-size: 17px !important; }
            .markdown-body h2 { font-size: 15px !important; }
            .markdown-body h3 { font-size: 13px !important; }
        }