/* =============================================
   创意广告语 - creative_advertising_slogan.css
   广告创意风格：活力紫 + 电光蓝，现代感强
   暗黑模式以 body.dark 为父级选择器前缀
   ============================================= */

/* ========== CSS 变量 ========== */
:root {
    --cas-primary:       #7c3aed;
    --cas-primary-light: #8b5cf6;
    --cas-accent:        #2563eb;
    --cas-accent-light:  #3b82f6;
    --cas-warm:          #f59e0b;
    --cas-bg:            #f5f3ff;
    --cas-panel-bg:      #ffffff;
    --cas-border:        #e0d9f7;
    --cas-text:          #1e1b4b;
    --cas-text-sub:      #4c3d8f;
    --cas-text-muted:    #8b80c4;
    --cas-card-bg:       #faf9ff;
    --cas-card-border:   #ddd6f7;
}

/* ========== 主容器 ========== */
.cas-container {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 200px);
    min-height: 600px;
    background: var(--cas-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(124, 58, 237, 0.12);
    transition: all 0.3s ease;
}

/* 全屏模式 */
.cas-container.fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw !important;
    height: 100vh !important;
    z-index: 9999;
    border-radius: 0;
    margin: 0;
    min-height: unset;
}

/* ========== 顶部工具栏 ========== */
.cas-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 14px;
    background: linear-gradient(135deg, #4c1d95 0%, #7c3aed 50%, #2563eb 100%);
    color: #fff;
    flex-wrap: wrap;
    gap: 8px;
    box-shadow: 0 2px 10px rgba(124, 58, 237, 0.4);
    flex-shrink: 0;
}

.toolbar-title {
    font-size: 13px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.92);
    letter-spacing: 0.5px;
    margin-right: 6px;
}

.toolbar-group {
    display: flex;
    gap: 6px;
    align-items: center;
    flex-wrap: wrap;
    min-height: 28px;
}

.toolbar-btn {
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    color: #4c1d95;
    transition: all 0.2s;
    white-space: nowrap;
}

.toolbar-btn:hover:not(:disabled) {
    background: #fff;
    transform: translateY(-1px);
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.15);
}

.toolbar-btn:active:not(:disabled) {
    transform: translateY(0);
}

.toolbar-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

/* 主操作按钮 - AI生成 */
.toolbar-btn-primary {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: #fff;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.5);
    transition: all 0.2s;
}

.toolbar-btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.6);
    color: #fff;
}

.toolbar-btn-primary:active:not(:disabled) {
    transform: scale(0.95);
    box-shadow: 0 1px 4px rgba(245, 158, 11, 0.3);
}

/* 主按钮禁用态：亮色 */
.toolbar-btn-primary:disabled {
    background: rgba(245, 158, 11, 0.35);
    color: rgba(255, 255, 255, 0.5);
    box-shadow: none;
    cursor: not-allowed;
}

/* 取消按钮 */
.toolbar-btn-cancel {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: #fff;
}

.toolbar-btn-cancel:hover:not(:disabled) {
    background: linear-gradient(135deg, #f87171 0%, #ef4444 100%);
    color: #fff;
}

/* ========== 主内容区：三栏 ========== */
.cas-main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
    background: var(--cas-bg);
}

/* ========== 左栏：历史记录 ========== */
.cas-history-panel {
    width: 210px;
    flex-shrink: 0;
    background: #fff;
    border-right: 1px solid var(--cas-border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.history-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 14px;
    background: linear-gradient(to bottom, #f5f3ff 0%, #ede9fe 100%);
    border-bottom: 1px solid var(--cas-border);
    flex-shrink: 0;
}

.history-panel-header h3 {
    margin: 0;
    font-size: 13px;
    font-weight: 600;
    color: var(--cas-primary);
}

.history-count {
    font-size: 11px;
    color: var(--cas-text-muted);
    font-weight: 400;
}

.history-clear-btn {
    background: #f3f0ff;
    border: none;
    color: #ef4444;
    font-size: 11px;
    cursor: pointer;
    padding: 2px 7px;
    border-radius: 3px;
    transition: background 0.2s;
    white-space: nowrap;
}

.history-clear-btn:hover {
    background: #fde8e8;
}

.history-search {
    padding: 8px;
    border-bottom: 1px solid var(--cas-border);
    flex-shrink: 0;
}

.history-search input {
    width: 100%;
    padding: 6px 10px;
    border: 1px solid var(--cas-border);
    border-radius: 4px;
    font-size: 12px;
    outline: none;
    transition: all 0.2s;
    box-sizing: border-box;
    color: var(--cas-text);
    background: #fff;
}

.history-search input:focus {
    border-color: var(--cas-primary-light);
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.12);
}

.history-list {
    flex: 1;
    overflow-y: auto;
    padding: 6px;
}

.history-empty {
    text-align: center;
    color: var(--cas-text-muted);
    font-size: 12px;
    padding: 24px 12px;
    line-height: 1.6;
}

/* 历史条目 */
.history-item {
    display: flex;
    flex-direction: column;
    padding: 9px 11px;
    margin-bottom: 4px;
    background: #faf9ff;
    border: 1px solid var(--cas-card-border);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    animation: cas-fadeIn 0.2s ease;
}

@keyframes cas-fadeIn {
    from { opacity: 0; transform: translateY(-4px); }
    to   { opacity: 1; transform: translateY(0); }
}

.history-item:hover {
    background: #ede9fe;
    border-color: var(--cas-primary-light);
    transform: translateX(2px);
}

.history-item.active {
    background: #ddd6fe;
    border-color: var(--cas-primary);
    box-shadow: 0 1px 4px rgba(124, 58, 237, 0.2);
}

.history-item-delete {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 18px;
    height: 18px;
    background: #fff0f0;
    color: #ef4444;
    border-radius: 3px;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    opacity: 0;
    cursor: pointer;
    transition: all 0.2s;
    padding: 0;
}

.history-item:hover .history-item-delete {
    opacity: 1;
}

.history-item-delete:hover {
    background: #ef4444;
    color: #fff;
}

.history-item-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--cas-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    padding-right: 20px;
    margin-bottom: 3px;
}

.history-item-meta {
    font-size: 11px;
    color: var(--cas-text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.history-item-badge {
    display: inline-block;
    font-size: 10px;
    padding: 1px 6px;
    background: #ede9fe;
    color: var(--cas-primary);
    border-radius: 8px;
    margin-top: 3px;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ========== 中栏：输入面板 ========== */
.cas-input-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: #fff;
    border-right: 1px solid var(--cas-border);
    overflow: hidden;
    min-width: 320px;
}

/* ========== 右栏：结果面板 ========== */
.cas-result-panel {
    width: 44%;
    display: flex;
    flex-direction: column;
    background: #fff;
    overflow: hidden;
    min-width: 280px;
}

/* ========== 面板公共 Header ========== */
.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: linear-gradient(to bottom, #f5f3ff 0%, #ede9fe 100%);
    border-bottom: 1px solid var(--cas-border);
    flex-shrink: 0;
    gap: 10px;
}

.panel-header h3 {
    margin: 0;
    font-size: 13px;
    font-weight: 600;
    color: var(--cas-primary);
    white-space: nowrap;
}

.panel-tip {
    font-size: 11px;
    color: var(--cas-text-muted);
    flex: 1;
    text-align: right;
}

/* 结果 Meta 信息 */
.result-meta {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.result-meta-brand {
    font-size: 12px;
    font-weight: 700;
    color: var(--cas-primary);
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.result-style-tag {
    font-size: 10px;
    color: #fff;
    background: linear-gradient(135deg, var(--cas-primary) 0%, var(--cas-accent-light) 100%);
    padding: 1px 7px;
    border-radius: 8px;
    font-weight: 500;
    white-space: nowrap;
}

.result-slogan-count {
    font-size: 11px;
    color: #fff;
    background: linear-gradient(135deg, var(--cas-primary) 0%, var(--cas-accent) 100%);
    padding: 1px 8px;
    border-radius: 8px;
}

.result-time {
    font-size: 11px;
    color: var(--cas-text-muted);
}

/* ========== 输入面板内容 ========== */
.cas-input-body {
    flex: 1;
    overflow-y: auto;
    padding: 14px 16px;
}

.form-group {
    margin-bottom: 12px;
}

.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--cas-text-sub);
    margin-bottom: 5px;
}

.form-row {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
}

.form-group-half {
    flex: 1;
    min-width: 0;
    margin-bottom: 0;
}

.required-mark {
    color: #ef4444;
    margin-left: 2px;
}

.label-tip {
    font-size: 11px;
    color: var(--cas-text-muted);
    font-weight: 400;
    margin-left: 4px;
}

/* 输入框 */
.cas-input {
    width: 100%;
    padding: 8px 11px;
    border: 1px solid var(--cas-border);
    border-radius: 5px;
    font-size: 13px;
    color: var(--cas-text);
    background: #fff;
    outline: none;
    transition: all 0.2s;
    box-sizing: border-box;
}

.cas-input:focus {
    border-color: var(--cas-primary-light);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.12);
}

.cas-input.shake {
    animation: shake 0.45s ease-in-out;
    border-color: #ef4444 !important;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.12) !important;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    15%, 55%, 85% { transform: translateX(-5px); }
    35%, 70% { transform: translateX(5px); }
}

/* 下拉框 */
.cas-select {
    width: 100%;
    padding: 8px 11px;
    border: 1px solid var(--cas-border);
    border-radius: 5px;
    font-size: 13px;
    color: var(--cas-text);
    background: #fff;
    outline: none;
    cursor: pointer;
    transition: all 0.2s;
    box-sizing: border-box;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238b80c4' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 28px;
}

.cas-select:focus {
    border-color: var(--cas-primary-light);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.12);
}

/* ========== 风格选择器 ========== */
.style-selector {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    padding: 4px 0;
}

.style-btn {
    padding: 5px 9px;
    font-size: 11px;
    font-weight: 500;
    border: 1.5px solid var(--cas-border);
    border-radius: 20px;
    background: #faf9ff;
    color: var(--cas-text-sub);
    cursor: pointer;
    transition: all 0.18s;
    white-space: nowrap;
}

.style-btn:hover {
    border-color: var(--cas-primary-light);
    background: #ede9fe;
    color: var(--cas-primary);
}

.style-btn.active {
    background: linear-gradient(135deg, var(--cas-primary) 0%, var(--cas-accent) 100%);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 2px 6px rgba(124, 58, 237, 0.3);
}

/* ========== 数量选择器 ========== */
.count-selector {
    display: flex;
    gap: 6px;
    padding: 4px 0;
}

.count-btn {
    padding: 6px 14px;
    font-size: 12px;
    font-weight: 600;
    border: 1.5px solid var(--cas-border);
    border-radius: 5px;
    background: #faf9ff;
    color: var(--cas-text-sub);
    cursor: pointer;
    transition: all 0.18s;
    flex: 1;
}

.count-btn:hover {
    border-color: var(--cas-primary-light);
    background: #ede9fe;
    color: var(--cas-primary);
}

.count-btn.active {
    background: linear-gradient(135deg, var(--cas-primary) 0%, var(--cas-accent) 100%);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 2px 6px rgba(124, 58, 237, 0.28);
}

/* 文本区域 */
.cas-textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--cas-border);
    border-radius: 5px;
    font-size: 13px;
    color: var(--cas-text);
    background: #fff;
    outline: none;
    resize: vertical;
    transition: all 0.2s;
    box-sizing: border-box;
    font-family: inherit;
    line-height: 1.65;
    min-height: 120px;
}

.cas-textarea:focus {
    border-color: var(--cas-primary-light);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.12);
}

.cas-textarea.shake {
    animation: shake 0.45s ease-in-out;
    border-color: #ef4444 !important;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.12) !important;
}

.cas-textarea-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 4px;
}

.cas-textarea-hint {
    font-size: 11px;
    color: var(--cas-text-muted);
}

.desc-char-count {
    font-size: 11px;
    color: var(--cas-text-muted);
}

/* ========== 结果面板内容 ========== */
.cas-result-body {
    flex: 1;
    overflow-y: auto;
    position: relative;
    display: flex;
    flex-direction: column;
}

/* 初始占位 */
.result-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 24px;
    text-align: center;
    color: var(--cas-text-muted);
    flex: 1;
    margin: auto;
}

.placeholder-icon {
    font-size: 56px;
    margin-bottom: 16px;
    opacity: 0.5;
    animation: sparkFloat 3s ease-in-out infinite;
}

@keyframes sparkFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    33%       { transform: translateY(-8px) rotate(8deg); }
    66%       { transform: translateY(-4px) rotate(-5deg); }
}

.placeholder-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--cas-text-sub);
    margin: 0 0 8px 0;
}

.placeholder-desc {
    font-size: 12px;
    color: var(--cas-text-muted);
    margin: 4px 0 0 0;
    line-height: 1.6;
}

/* 加载中 */
.result-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex: 1;
    margin: auto;
    padding: 40px 24px;
}

.loading-spark-anim {
    font-size: 48px;
    animation: sparkPulse 1.2s ease-in-out infinite;
    display: block;
}

@keyframes sparkPulse {
    0%, 100% { transform: scale(1) rotate(-5deg); opacity: 0.7; }
    50%       { transform: scale(1.2) rotate(5deg); opacity: 1; }
}

.loading-dots {
    display: flex;
    gap: 6px;
}

.loading-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--cas-primary-light);
    animation: dots 1.2s infinite;
}

.loading-dots span:nth-child(2) { animation-delay: 0.2s; }
.loading-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes dots {
    0%, 80%, 100% { transform: scale(0.7); opacity: 0.4; }
    40%            { transform: scale(1.1); opacity: 1; }
}

.loading-text {
    font-size: 13px;
    color: var(--cas-text-muted);
    margin: 0;
}

/* ========== 广告语卡片列表 ========== */
.result-content {
    flex: 1;
    padding: 12px;
}

/* 结果内容入场动效 */
@keyframes casResultEnter {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

.result-content.result-enter-anim {
    animation: casResultEnter 0.35s ease-out both;
}

.slogan-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* 广告语单卡 */
.slogan-card {
    background: var(--cas-card-bg);
    border: 1px solid var(--cas-card-border);
    border-radius: 8px;
    padding: 12px 14px;
    position: relative;
    transition: all 0.2s;
    animation: cas-fadeIn 0.3s ease both;
}

.slogan-card:hover {
    border-color: var(--cas-primary-light);
    box-shadow: 0 3px 12px rgba(124, 58, 237, 0.1);
    transform: translateY(-1px);
}

/* 卡片左侧彩色边 */
.slogan-card::before {
    content: '';
    position: absolute;
    top: 8px;
    bottom: 8px;
    left: 0;
    width: 4px;
    border-radius: 0 3px 3px 0;
    background: linear-gradient(to bottom, var(--cas-primary), var(--cas-accent));
}

.slogan-card-header {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 6px;
    padding-right: 48px; /* 防止复制按钮遮盖广告语文字 */
}

.slogan-index {
    font-size: 11px;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, var(--cas-primary) 0%, var(--cas-accent) 100%);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 1px;
}

.slogan-text {
    font-size: 15px;
    font-weight: 700;
    color: var(--cas-text);
    line-height: 1.5;
    flex: 1;
    letter-spacing: 0.03em;
}

.slogan-note {
    font-size: 12px;
    color: var(--cas-text-muted);
    line-height: 1.55;
    padding-left: 28px;
    padding-right: 48px; /* 防止内容延伸至复制按钮下方 */
    font-style: italic;
}

.slogan-copy-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 3px 9px;
    font-size: 11px;
    font-weight: 500;
    background: #ede9fe;
    color: var(--cas-primary);
    border: 1px solid var(--cas-card-border);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.18s;
    white-space: nowrap;
    opacity: 0;
}

.slogan-card:hover .slogan-copy-btn {
    opacity: 1;
}

.slogan-copy-btn:hover {
    background: var(--cas-primary);
    color: #fff;
    border-color: transparent;
}

.slogan-copy-btn.copied {
    background: #dcfce7;
    color: #16a34a;
    border-color: #bbf7d0;
    opacity: 1;
}

/* ========== 错误块 ========== */
.result-error-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 24px;
    text-align: center;
    flex: 1;
    margin: auto;
}

.result-error-icon {
    font-size: 40px;
    margin-bottom: 12px;
    opacity: 0.85;
}

.result-error-msg {
    font-size: 13px;
    color: #4c1d95;
    margin: 0 0 18px 0;
    line-height: 1.65;
    max-width: 260px;
}

.result-error-retry {
    padding: 7px 20px;
    background: linear-gradient(135deg, var(--cas-primary) 0%, var(--cas-accent) 100%);
    color: #fff;
    border: none;
    border-radius: 5px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 2px 6px rgba(124, 58, 237, 0.3);
}

.result-error-retry:hover {
    background: linear-gradient(135deg, var(--cas-primary-light) 0%, var(--cas-accent-light) 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(124, 58, 237, 0.35);
}

/* ========== 自定义滚动条 ========== */
.history-list::-webkit-scrollbar,
.cas-input-body::-webkit-scrollbar,
.cas-result-body::-webkit-scrollbar,
.cas-modal-body::-webkit-scrollbar { width: 4px; }

.history-list::-webkit-scrollbar-track,
.cas-input-body::-webkit-scrollbar-track,
.cas-result-body::-webkit-scrollbar-track,
.cas-modal-body::-webkit-scrollbar-track { background: transparent; }

.history-list::-webkit-scrollbar-thumb,
.cas-input-body::-webkit-scrollbar-thumb,
.cas-result-body::-webkit-scrollbar-thumb,
.cas-modal-body::-webkit-scrollbar-thumb {
    background: rgba(124, 58, 237, 0.2);
    border-radius: 2px;
}

.history-list::-webkit-scrollbar-thumb:hover,
.cas-input-body::-webkit-scrollbar-thumb:hover,
.cas-result-body::-webkit-scrollbar-thumb:hover,
.cas-modal-body::-webkit-scrollbar-thumb:hover {
    background: rgba(124, 58, 237, 0.42);
}

/* ========== 模态框 ========== */
.cas-modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(30, 10, 70, 0.35);
    z-index: 100000;
    backdrop-filter: blur(2px);
}

.cas-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 100001;
    width: 700px;
    max-width: 92vw;
    max-height: 82vh;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 12px 40px rgba(124, 58, 237, 0.2);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: modalIn 0.22s ease-out;
}

@keyframes modalIn {
    from { opacity: 0; transform: translate(-50%, -55%); }
    to   { opacity: 1; transform: translate(-50%, -50%); }
}

.cas-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 18px;
    background: linear-gradient(to bottom, #f5f3ff 0%, #ede9fe 100%);
    border-bottom: 1px solid var(--cas-border);
    flex-shrink: 0;
}

.cas-modal-header h3 {
    margin: 0;
    font-size: 14px;
    font-weight: 600;
    color: var(--cas-primary);
}

.cas-modal-close {
    width: 28px; height: 28px;
    background: #fff;
    border: 1px solid var(--cas-border);
    color: var(--cas-text-muted);
    border-radius: 4px;
    cursor: pointer;
    font-size: 13px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cas-modal-close:hover {
    background: #fde8e8;
    color: #ef4444;
    border-color: #fca5a5;
}

.cas-modal-body {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 12px;
    align-content: start;
}

/* 示例卡片 */
.example-card {
    padding: 12px 14px;
    border: 1px solid var(--cas-card-border);
    border-radius: 7px;
    background: #faf9ff;
    cursor: pointer;
    transition: all 0.18s;
}

.example-card:hover {
    border-color: var(--cas-primary-light);
    background: #ede9fe;
    box-shadow: 0 3px 10px rgba(124, 58, 237, 0.12);
    transform: translateY(-1px);
}

.example-card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.example-card-icon {
    font-size: 18px;
    flex-shrink: 0;
}

.example-card-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--cas-text);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.example-card-badge {
    font-size: 10px;
    padding: 1px 7px;
    background: #ede9fe;
    color: var(--cas-primary);
    border-radius: 8px;
    border: 1px solid #c4b5fd;
    white-space: nowrap;
}

.example-card-desc {
    font-size: 12px;
    color: var(--cas-text-muted);
    line-height: 1.5;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

/* ========== Toast 提示 ========== */
.cas-toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: rgba(30, 10, 70, 0.88);
    color: #fff;
    padding: 9px 20px 9px 17px;
    border-radius: 6px;
    font-size: 13px;
    z-index: 200000;
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
    white-space: nowrap;
    border-left: 3px solid transparent; /* 统一锚点，按类型激活颜色 */
}

.cas-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.cas-toast.success { background: rgba(22, 101, 52, 0.92);  border-left-color: #4ade80; }
.cas-toast.error   { background: rgba(153, 27, 27, 0.92);  border-left-color: #f87171; }
.cas-toast.info    { background: rgba(37, 99, 235, 0.92);  border-left-color: #93c5fd; }

/* ========== 响应式 ========== */
@media (max-width: 960px) {
    .cas-result-panel { width: 40%; }
}

@media (max-width: 768px) {
    .cas-main-content  { flex-direction: column; }
    .cas-history-panel { width: 100%; height: 150px; border-right: none; border-bottom: 1px solid var(--cas-border); }
    .cas-result-panel  { width: 100%; min-width: unset; }
    .cas-input-panel   { min-width: unset; }
    .form-row          { flex-direction: column; gap: 0; }
    .form-group-half   { flex: none; width: 100%; margin-bottom: 12px; }
    .cas-toolbar       { gap: 4px; }
    .toolbar-title     { display: none; }
    .style-selector    { gap: 4px; }
    .style-btn         { padding: 4px 7px; font-size: 10px; }
    /* 移动端广告语复制按钮常显 */
    .slogan-copy-btn   { opacity: 1; }
    /* 移动端历史面板横向滚动布局 */
    .history-list      { display: flex; flex-direction: row; overflow-x: auto; overflow-y: hidden; gap: 6px; padding: 6px; }
    .history-item      { flex-shrink: 0; width: 150px; margin-bottom: 0; }
    .history-empty     { align-self: center; flex-shrink: 0; padding: 6px 12px; }
    /* 移动端删除按钮强制可见（触屏设备无 hover） */
    .history-item-delete { opacity: 1 !important; }
}

/* ========== 暗黑模式 ========== */
body.dark {
    --cas-bg:          #0f0a1e;
    --cas-border:      rgba(139, 92, 246, 0.18);
    --cas-text:        #e0d9f7;
    --cas-text-sub:    #b8acec;
    --cas-text-muted:  #7060a8;
    --cas-card-bg:     #1a1130;
    --cas-card-border: rgba(139, 92, 246, 0.2);
}

body.dark .cas-container {
    background: var(--cas-bg);
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.5);
}

body.dark .cas-toolbar {
    background: linear-gradient(135deg, #1e0b40 0%, #3b1a7a 50%, #1a3a7a 100%);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
}

body.dark .toolbar-btn {
    background: rgba(255, 255, 255, 0.1);
    color: #e0d9f7;
    border: 1px solid rgba(139, 92, 246, 0.25);
}

body.dark .toolbar-btn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.18);
    color: #fff;
}

body.dark .toolbar-btn-primary {
    background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
    color: #fff;
    border: none;
}

body.dark .toolbar-btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

/* 暗黑模式主按钮禁用态 */
body.dark .toolbar-btn-primary:disabled {
    background: rgba(180, 83, 9, 0.28);
    color: rgba(255, 255, 255, 0.35);
    box-shadow: none;
    border: 1px solid rgba(180, 83, 9, 0.2);
}

body.dark .toolbar-btn-cancel {
    background: linear-gradient(135deg, #dc2626 0%, #991b1b 100%);
    color: #fff;
    border: none;
}

body.dark .cas-main-content {
    background: var(--cas-bg);
}

body.dark .cas-history-panel,
body.dark .cas-input-panel,
body.dark .cas-result-panel {
    background: #110d22;
    border-color: var(--cas-border);
}

body.dark .history-panel-header,
body.dark .panel-header {
    background: linear-gradient(to bottom, #1a1030 0%, #150e26 100%);
    border-color: var(--cas-border);
}

body.dark .history-panel-header h3,
body.dark .panel-header h3 {
    color: #a78bfa;
}

body.dark .history-search input {
    background: #0a071a;
    border-color: var(--cas-border);
    color: var(--cas-text);
}

body.dark .history-search input::placeholder {
    color: var(--cas-text-muted);
}

body.dark .history-item {
    background: #1a1130;
    border-color: rgba(139, 92, 246, 0.22);
}

body.dark .history-item:hover {
    background: #211540;
    border-color: rgba(139, 92, 246, 0.5);
}

body.dark .history-item.active {
    background: #271b4d;
    border-color: var(--cas-primary-light);
    box-shadow: 0 1px 4px rgba(139, 92, 246, 0.3);
}

body.dark .history-item-title {
    color: var(--cas-text);
}

body.dark .history-item-badge {
    background: rgba(124, 58, 237, 0.2);
    color: #a78bfa;
}

body.dark .cas-input,
body.dark .cas-select,
body.dark .cas-textarea {
    background: #0a071a;
    border-color: var(--cas-border);
    color: var(--cas-text);
}

body.dark .cas-input:focus,
body.dark .cas-select:focus,
body.dark .cas-textarea:focus {
    border-color: var(--cas-primary-light);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

body.dark .cas-input::placeholder,
body.dark .cas-textarea::placeholder {
    color: var(--cas-text-muted);
}

body.dark .cas-select {
    color-scheme: dark;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%237060a8' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
}

body.dark .cas-select option {
    background: #0a071a;
    color: var(--cas-text);
}

body.dark .style-btn {
    background: #1a1130;
    border-color: var(--cas-border);
    color: var(--cas-text-sub);
}

body.dark .style-btn:hover {
    background: #211540;
    border-color: var(--cas-primary-light);
    color: #c4b5fd;
}

body.dark .style-btn.active {
    background: linear-gradient(135deg, #5b21b6 0%, #1d4ed8 100%);
    color: #fff;
    border-color: transparent;
}

body.dark .count-btn {
    background: #1a1130;
    border-color: var(--cas-border);
    color: var(--cas-text-sub);
}

body.dark .count-btn:hover {
    background: #211540;
    border-color: var(--cas-primary-light);
    color: #c4b5fd;
}

body.dark .count-btn.active {
    background: linear-gradient(135deg, #5b21b6 0%, #1d4ed8 100%);
    color: #fff;
    border-color: transparent;
}

body.dark .slogan-card {
    background: #1a1130;
    border-color: rgba(139, 92, 246, 0.2);
}

body.dark .slogan-card:hover {
    border-color: rgba(139, 92, 246, 0.5);
    box-shadow: 0 3px 12px rgba(124, 58, 237, 0.15);
}

body.dark .slogan-text {
    color: var(--cas-text);
}

body.dark .slogan-note {
    color: #7060a8;
}

body.dark .slogan-copy-btn {
    background: rgba(124, 58, 237, 0.15);
    color: #a78bfa;
    border-color: rgba(139, 92, 246, 0.2);
}

body.dark .slogan-copy-btn:hover {
    background: var(--cas-primary);
    color: #fff;
}

body.dark .slogan-copy-btn.copied {
    background: rgba(22, 163, 74, 0.2);
    color: #4ade80;
    border-color: rgba(22, 163, 74, 0.3);
}

body.dark .result-error-msg {
    color: #c4b5fd;
}

body.dark .result-error-retry {
    background: linear-gradient(135deg, #5b21b6 0%, #1d4ed8 100%);
}

body.dark .result-error-retry:hover {
    background: linear-gradient(135deg, #7c3aed 0%, #2563eb 100%);
}

body.dark .result-placeholder,
body.dark .result-loading {
    background: transparent;
}

body.dark .cas-result-body {
    background: #0d0920;
}

body.dark .result-slogan-count {
    background: linear-gradient(135deg, #5b21b6 0%, #1d4ed8 100%);
}

body.dark .result-style-tag {
    background: linear-gradient(135deg, #5b21b6 0%, #1d4ed8 100%);
    color: #e0d9f7;
}

body.dark .cas-modal {
    background: #110d22;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
}

body.dark .cas-modal-header {
    background: linear-gradient(to bottom, #1a1030 0%, #150e26 100%);
    border-color: var(--cas-border);
}

body.dark .cas-modal-close {
    background: #1a1130;
    border-color: var(--cas-border);
    color: var(--cas-text-muted);
}

body.dark .cas-modal-body {
    background: #110d22;
}

body.dark .example-card {
    background: #1a1130;
    border-color: rgba(139, 92, 246, 0.2);
}

body.dark .example-card:hover {
    background: #211540;
    border-color: var(--cas-primary-light);
}

body.dark .example-card-title {
    color: var(--cas-text);
}

body.dark .example-card-badge {
    background: rgba(124, 58, 237, 0.2);
    color: #a78bfa;
    border-color: rgba(139, 92, 246, 0.3);
}

body.dark .example-card-desc {
    color: #7060a8;
}

body.dark .form-group label {
    color: var(--cas-text-sub);
}

body.dark .cas-toast {
    background: rgba(200, 190, 240, 0.95);
    color: #1e0b40;
}

body.dark .cas-toast.success { background: rgba(22, 101, 52, 0.95);  color: #fff; border-left-color: #4ade80; }
body.dark .cas-toast.error   { background: rgba(153, 27, 27, 0.95);  color: #fff; border-left-color: #f87171; }
body.dark .cas-toast.info    { background: rgba(29, 78, 216, 0.95);  color: #fff; border-left-color: #93c5fd; }

/* 暗黑模式自定义滚动条 */
body.dark .history-list::-webkit-scrollbar-thumb,
body.dark .cas-input-body::-webkit-scrollbar-thumb,
body.dark .cas-result-body::-webkit-scrollbar-thumb,
body.dark .cas-modal-body::-webkit-scrollbar-thumb {
    background: rgba(139, 92, 246, 0.25);
}

body.dark .history-list::-webkit-scrollbar-thumb:hover,
body.dark .cas-input-body::-webkit-scrollbar-thumb:hover,
body.dark .cas-result-body::-webkit-scrollbar-thumb:hover,
body.dark .cas-modal-body::-webkit-scrollbar-thumb:hover {
    background: rgba(139, 92, 246, 0.48);
}

body.dark .history-clear-btn {
    background: rgba(239, 68, 68, 0.1);
    color: #f87171;
}

body.dark .history-item-delete {
    background: rgba(239, 68, 68, 0.1);
    color: #f87171;
}

body.dark .history-clear-btn:hover {
    background: rgba(239, 68, 68, 0.22);
}

body.dark .cas-modal-close:hover {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
    border-color: rgba(239, 68, 68, 0.3);
}

body.dark .panel-tip,
body.dark .cas-textarea-hint,
body.dark .desc-char-count,
body.dark .label-tip {
    color: #7060a8;
}

body.dark .loading-text {
    color: #9080cc;
}

body.dark .history-item-meta {
    color: #7060a8;
}

body.dark .result-meta-brand {
    color: #a78bfa;
}

body.dark .result-time {
    color: #7060a8;
}

body.dark .history-count {
    color: #7060a8;
}

body.dark .placeholder-desc {
    color: #7060a8;
}