/* =====================================================
   AI生成明信片 - 样式表
   ===================================================== */

/* ---- CSS 变量 ---- */
:root {
    --apg-primary: #e55c8a;
    --apg-primary-hover: #d4436f;
    --apg-primary-light: #fdf2f6;
    --apg-success: #059669;
    --apg-warning: #d97706;
    --apg-danger: #dc2626;
    --apg-bg: #fdf6f9;
    --apg-surface: #ffffff;
    --apg-border: #f0d6e4;
    --apg-text: #2d1b2e;
    --apg-text-muted: #7b5c6e;
    --apg-text-light: #b08fa0;
    --apg-shadow-sm: 0 1px 4px rgba(229,92,138,.10);
    --apg-shadow-md: 0 4px 14px rgba(229,92,138,.13);
    --apg-shadow-lg: 0 8px 28px rgba(229,92,138,.16);
    --apg-radius: 12px;
    --apg-radius-sm: 7px;
    --apg-toolbar-h: 50px;
    --apg-transition: 0.2s ease;

    /* 明信片主题色 */
    --pc-warmOrange-bg: linear-gradient(135deg, #fff7ed, #fef3c7);
    --pc-warmOrange-border: #f97316;
    --pc-warmOrange-header: linear-gradient(135deg, #fb923c, #f59e0b);
    --pc-skyBlue-bg: linear-gradient(135deg, #eff6ff, #e0f2fe);
    --pc-skyBlue-border: #3b82f6;
    --pc-skyBlue-header: linear-gradient(135deg, #3b82f6, #0ea5e9);
    --pc-roseRed-bg: linear-gradient(135deg, #fff1f2, #fce7f3);
    --pc-roseRed-border: #f43f5e;
    --pc-roseRed-header: linear-gradient(135deg, #f43f5e, #ec4899);
    --pc-springGreen-bg: linear-gradient(135deg, #f0fdf4, #ecfdf5);
    --pc-springGreen-border: #22c55e;
    --pc-springGreen-header: linear-gradient(135deg, #22c55e, #10b981);
    --pc-lavender-bg: linear-gradient(135deg, #faf5ff, #f3e8ff);
    --pc-lavender-border: #a855f7;
    --pc-lavender-header: linear-gradient(135deg, #a855f7, #8b5cf6);
    --pc-golden-bg: linear-gradient(135deg, #fffbeb, #fef9c3);
    --pc-golden-border: #eab308;
    --pc-golden-header: linear-gradient(135deg, #eab308, #f59e0b);
}

/* 暗色主题 */
.apg-dark {
    --apg-primary: #f472b6;
    --apg-primary-hover: #ec4899;
    --apg-primary-light: #2d1b2e;
    --apg-bg: #1a0d17;
    --apg-surface: #2d1b2e;
    --apg-border: #4a2c3e;
    --apg-text: #f9e8f3;
    --apg-text-muted: #d4a8c0;
    --apg-text-light: #8a6070;
    --apg-shadow-sm: 0 1px 4px rgba(0,0,0,.35);
    --apg-shadow-md: 0 4px 14px rgba(0,0,0,.40);
    --apg-shadow-lg: 0 8px 28px rgba(0,0,0,.50);

    --pc-warmOrange-bg: linear-gradient(135deg, #2d1a00, #2e1f00);
    --pc-skyBlue-bg: linear-gradient(135deg, #0c1a2e, #071e2f);
    --pc-roseRed-bg: linear-gradient(135deg, #2d0a10, #2e0a1f);
    --pc-springGreen-bg: linear-gradient(135deg, #0a2d14, #072e1e);
    --pc-lavender-bg: linear-gradient(135deg, #1c0a2d, #17072e);
    --pc-golden-bg: linear-gradient(135deg, #2d2000, #2e2300);
}

/* ---- 全局容器 ---- */
.apg-container {
    display: flex;
    flex-direction: column;
    background: var(--apg-bg);
    border-radius: var(--apg-radius);
    overflow: hidden;
    box-shadow: var(--apg-shadow-lg);
    min-height: 640px;
    border: 1px solid var(--apg-border);
    transition: background var(--apg-transition), border-color var(--apg-transition);
}

/* ---- 工具栏 ---- */
.apg-toolbar {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 0 12px;
    height: var(--apg-toolbar-h);
    background: var(--apg-surface);
    border-bottom: 1px solid var(--apg-border);
    flex-wrap: wrap;
    min-height: var(--apg-toolbar-h);
    transition: background var(--apg-transition), border-color var(--apg-transition);
}

.toolbar-group { display: flex; align-items: center; gap: 2px; }
.toolbar-group--right { margin-left: auto; }

.apg-toolbar-btn {
    padding: 5px 11px;
    border: 1px solid var(--apg-border);
    border-radius: var(--apg-radius-sm);
    background: var(--apg-surface);
    color: var(--apg-text);
    font-size: 13px;
    cursor: pointer;
    transition: all var(--apg-transition);
    white-space: nowrap;
}

.apg-toolbar-btn:hover {
    background: var(--apg-primary-light);
    border-color: var(--apg-primary);
    color: var(--apg-primary);
}

.apg-toolbar-btn--ai {
    background: linear-gradient(135deg, #e55c8a, #a855f7);
    color: #fff;
    border-color: transparent;
    font-weight: 600;
}

.apg-toolbar-btn--ai:hover {
    background: linear-gradient(135deg, #d4436f, #9333ea);
    color: #fff;
    border-color: transparent;
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(229,92,138,.40);
}

/* ---- 主内容区三列布局 ---- */
.apg-main-content {
    display: grid;
    grid-template-columns: 210px 1fr 1fr;
    min-height: 600px;
    overflow: hidden;
}

/* ---- 历史记录面板 ---- */
.apg-history-panel {
    border-right: 1px solid var(--apg-border);
    display: flex;
    flex-direction: column;
    background: var(--apg-surface);
    overflow: hidden;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px 8px;
    border-bottom: 1px solid var(--apg-border);
    flex-shrink: 0;
}

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

.history-clear-btn {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 4px;
    border: 1px solid var(--apg-border);
    background: transparent;
    color: var(--apg-text-muted);
    cursor: pointer;
    transition: all var(--apg-transition);
}

.history-clear-btn:hover {
    border-color: var(--apg-danger);
    color: var(--apg-danger);
}

.history-search {
    padding: 8px 10px;
    flex-shrink: 0;
}

.history-search-wrap { position: relative; }

.history-search-wrap input {
    width: 100%;
    padding: 5px 28px 5px 10px;
    border: 1px solid var(--apg-border);
    border-radius: var(--apg-radius-sm);
    font-size: 12px;
    background: var(--apg-bg);
    color: var(--apg-text);
    box-sizing: border-box;
    outline: none;
    transition: border-color var(--apg-transition);
}

.history-search-wrap input:focus { border-color: var(--apg-primary); }

.history-search-clear {
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 11px;
    color: var(--apg-text-light);
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 3px;
}

.history-search-clear:hover { color: var(--apg-danger); }

.history-list {
    flex: 1;
    overflow-y: auto;
    padding: 4px 8px;
    scrollbar-width: thin;
    scrollbar-color: var(--apg-border) transparent;
}

.history-list::-webkit-scrollbar { width: 4px; }
.history-list::-webkit-scrollbar-track { background: transparent; }
.history-list::-webkit-scrollbar-thumb { background: var(--apg-border); border-radius: 4px; }

.history-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 12px;
    color: var(--apg-text-light);
    font-size: 12px;
    text-align: center;
    gap: 6px;
}

.history-empty-icon { font-size: 30px; }
.history-empty-main { font-size: 12px; font-weight: 600; color: var(--apg-text-muted); }
.history-empty-sub  { font-size: 11px; }

.history-item {
    padding: 8px 10px;
    border-radius: var(--apg-radius-sm);
    cursor: pointer;
    border: 1px solid transparent;
    margin-bottom: 4px;
    transition: all var(--apg-transition);
}

.history-item:hover, .history-item.active {
    background: var(--apg-primary-light);
    border-color: var(--apg-primary);
}

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

.history-item-meta {
    font-size: 11px;
    color: var(--apg-text-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.history-item-del {
    background: none;
    border: none;
    font-size: 11px;
    color: var(--apg-text-light);
    cursor: pointer;
    padding: 0 2px;
    opacity: 0;
    transition: opacity var(--apg-transition);
}

.history-item:hover .history-item-del { opacity: 1; }
.history-item-del:hover { color: var(--apg-danger); }

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

/* ---- 编辑器面板 ---- */
.apg-editor-panel {
    border-right: 1px solid var(--apg-border);
    display: flex;
    flex-direction: column;
    background: var(--apg-surface);
    overflow: hidden;
}

.editor-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px 8px;
    border-bottom: 1px solid var(--apg-border);
    flex-shrink: 0;
}

.editor-panel-title { font-size: 13px; font-weight: 600; color: var(--apg-text); }
.editor-panel-meta { font-size: 11px; color: var(--apg-text-light); }

.apg-form {
    flex: 1;
    overflow-y: auto;
    padding: 14px 16px;
    scrollbar-width: thin;
    scrollbar-color: var(--apg-border) transparent;
}

.apg-form::-webkit-scrollbar { width: 4px; }
.apg-form::-webkit-scrollbar-track { background: transparent; }
.apg-form::-webkit-scrollbar-thumb { background: var(--apg-border); border-radius: 4px; }

/* ---- 表单元素 ---- */
.apg-form-group { margin-bottom: 14px; }

.apg-form-row {
    display: flex;
    gap: 12px;
    margin-bottom: 14px;
}

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

.apg-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--apg-text);
    margin-bottom: 5px;
    border-bottom: 1px solid var(--apg-border);
    padding-bottom: 4px;
}

.apg-label-hint { font-size: 11px; font-weight: 400; color: var(--apg-text-light); }
.required-mark { color: var(--apg-danger); }

.apg-input, .apg-select, .apg-textarea {
    width: 100%;
    padding: 7px 10px;
    border: 1px solid var(--apg-border);
    border-radius: var(--apg-radius-sm);
    font-size: 13px;
    color: var(--apg-text);
    background: var(--apg-bg);
    box-sizing: border-box;
    outline: none;
    transition: border-color var(--apg-transition), box-shadow var(--apg-transition);
    font-family: inherit;
}

.apg-input:focus, .apg-select:focus, .apg-textarea:focus {
    border-color: var(--apg-primary);
    box-shadow: 0 0 0 3px rgba(229,92,138,.12);
}

.apg-textarea { resize: vertical; min-height: 68px; }

.apg-char-counter {
    font-size: 11px;
    color: var(--apg-text-light);
    text-align: right;
    margin-top: 3px;
}

.apg-char-warning { color: var(--apg-warning) !important; }
.apg-char-danger  { color: var(--apg-danger)  !important; }

/* ---- 风格选择器 ---- */
.apg-style-selector {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.apg-style-item { cursor: pointer; }
.apg-style-item input[type="radio"] { display: none; }

.apg-style-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 9px 6px;
    border: 2px solid var(--apg-border);
    border-radius: var(--apg-radius-sm);
    background: var(--apg-bg);
    text-align: center;
    transition: all var(--apg-transition);
    gap: 3px;
}

.apg-style-item:hover .apg-style-card {
    border-color: var(--apg-primary);
}

.apg-style-item input:checked + .apg-style-card--warm {
    border-color: #f97316;
    background: #fff7ed;
}
.apg-style-item input:checked + .apg-style-card--elegant {
    border-color: #22c55e;
    background: #f0fdf4;
}
.apg-style-item input:checked + .apg-style-card--humorous {
    border-color: #eab308;
    background: #fefce8;
}
.apg-style-item input:checked + .apg-style-card--formal {
    border-color: #3b82f6;
    background: #eff6ff;
}

/* 暗色主题下风格选择卡选中态适配 */
.apg-dark .apg-style-item input:checked + .apg-style-card--warm {
    border-color: #f97316;
    background: rgba(249,115,22,.15);
}
.apg-dark .apg-style-item input:checked + .apg-style-card--elegant {
    border-color: #22c55e;
    background: rgba(34,197,94,.15);
}
.apg-dark .apg-style-item input:checked + .apg-style-card--humorous {
    border-color: #eab308;
    background: rgba(234,179,8,.15);
}
.apg-dark .apg-style-item input:checked + .apg-style-card--formal {
    border-color: #3b82f6;
    background: rgba(59,130,246,.15);
}

.style-icon { font-size: 18px; }
.style-name { font-size: 12px; font-weight: 600; color: var(--apg-text); }
.style-desc { font-size: 10px; color: var(--apg-text-muted); line-height: 1.4; }

/* ---- 复选框 ---- */
.apg-checkbox-quick {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
    font-size: 11px;
    color: var(--apg-text-muted);
}

.apg-checkbox-quick-btn {
    background: none;
    border: none;
    color: var(--apg-primary);
    font-size: 11px;
    cursor: pointer;
    padding: 0;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.apg-checkbox-group { display: flex; flex-wrap: wrap; gap: 8px; }

.apg-checkbox-item {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: 13px;
    color: var(--apg-text);
    user-select: none;
}

.apg-checkbox-item input[type="checkbox"] { display: none; }

.apg-checkbox-mark {
    width: 16px;
    height: 16px;
    border: 2px solid var(--apg-border);
    border-radius: 3px;
    background: var(--apg-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--apg-transition);
    flex-shrink: 0;
}

.apg-checkbox-item input:checked + .apg-checkbox-mark {
    background: var(--apg-primary);
    border-color: var(--apg-primary);
}

.apg-checkbox-item input:checked + .apg-checkbox-mark::after {
    content: '✓';
    color: #fff;
    font-size: 10px;
    font-weight: 700;
}

.apg-checkbox-item:hover .apg-checkbox-mark {
    border-color: var(--apg-primary);
}

/* ---- 快捷键提示 ---- */
.shortcut-hint {
    font-size: 0.8em;
    opacity: 0.7;
    color: var(--apg-text-muted);
    white-space: nowrap;
    transition: transform 0.15s ease;
    align-self: center;
}

.shortcut-hint:hover { transform: scale(1.05); opacity: 1; }

@media (max-width: 600px) { .shortcut-hint { display: none; } }

/* ---- 按钮 ---- */
.apg-form-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 6px;
}

.apg-btn {
    padding: 9px 20px;
    border-radius: var(--apg-radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all var(--apg-transition);
    display: flex;
    align-items: center;
    gap: 6px;
}

.apg-btn--primary {
    background: linear-gradient(135deg, #e55c8a, #a855f7);
    color: #fff;
    flex: 1;
    justify-content: center;
}

.apg-btn--primary:hover {
    background: linear-gradient(135deg, #d4436f, #9333ea);
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(229,92,138,.35);
}

.apg-btn--primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* 生成按钮 Loading 旋转 */
.apg-btn--primary.loading .btn-loading-icon {
    display: inline-block;
    animation: apg-spin 1s linear infinite;
}

@keyframes apg-spin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

.apg-btn--secondary {
    background: var(--apg-bg);
    color: var(--apg-text-muted);
    border: 1px solid var(--apg-border);
}

.apg-btn--secondary:hover {
    border-color: var(--apg-primary);
    color: var(--apg-primary);
}

/* 键盘导航聚焦环（focus-visible） */
.apg-toolbar-btn:focus-visible,
.apg-btn:focus-visible,
.preview-action-btn:focus-visible,
.history-clear-btn:focus-visible,
.cancel-generate-btn:focus-visible {
    outline: 2px solid var(--apg-primary);
    outline-offset: 2px;
}

/* ---- 预览面板 ---- */
.apg-preview-panel {
    display: flex;
    flex-direction: column;
    background: var(--apg-bg);
    overflow: hidden;
    position: relative;
}

.preview-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px 8px;
    border-bottom: 1px solid var(--apg-border);
    background: var(--apg-surface);
    flex-shrink: 0;
}

.preview-panel-header h3 { margin: 0; font-size: 13px; font-weight: 600; color: var(--apg-text); }

.preview-panel-actions { display: flex; gap: 6px; }

.preview-action-btn {
    padding: 4px 10px;
    font-size: 12px;
    border: 1px solid var(--apg-border);
    border-radius: 4px;
    background: var(--apg-surface);
    color: var(--apg-text-muted);
    cursor: pointer;
    transition: all var(--apg-transition);
}

.preview-action-btn:hover {
    border-color: var(--apg-primary);
    color: var(--apg-primary);
}

.preview-content {
    flex: 1;
    overflow-y: auto;
    padding: 20px 16px;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    scrollbar-width: thin;
    scrollbar-color: var(--apg-border) transparent;
}

.preview-content::-webkit-scrollbar { width: 4px; }
.preview-content::-webkit-scrollbar-track { background: transparent; }
.preview-content::-webkit-scrollbar-thumb { background: var(--apg-border); border-radius: 4px; }

/* 空状态 */
.preview-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 300px;
    color: var(--apg-text-light);
    text-align: center;
    gap: 10px;
}

.preview-empty-icon { font-size: 52px; opacity: 0.65; }
.preview-empty-title { font-size: 16px; font-weight: 600; color: var(--apg-text-muted); }
.preview-empty-hint { font-size: 13px; color: var(--apg-text-light); line-height: 1.7; }

/* 浮动动画 */
.apg-float-anim {
    animation: apg-float 2.8s ease-in-out infinite;
}

@keyframes apg-float {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(-8px); }
}

/* 加载状态 */
.preview-loading {
    position: absolute;
    inset: 0;
    background: rgba(253,246,249,.92);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    z-index: 10;
}

.apg-dark .preview-loading {
    background: rgba(26,13,23,.92);
}

.loading-envelope {
    font-size: 40px;
    animation: apg-envelope-bounce 1s ease-in-out infinite;
}

@keyframes apg-envelope-bounce {
    0%, 100% { transform: scale(1); }
    50%       { transform: scale(1.15); }
}

.loading-title { font-size: 15px; font-weight: 600; color: var(--apg-text); }
.loading-hint  { font-size: 12px; color: var(--apg-text-muted); text-align: center; max-width: 240px; }

/* Loading 动态小点 */
.apg-loading-dots { display: inline; }
.apg-loading-dots span {
    animation: apg-dot-flash 1.4s infinite ease-in-out;
    opacity: 0;
}
.apg-loading-dots span:nth-child(1) { animation-delay: 0.0s; }
.apg-loading-dots span:nth-child(2) { animation-delay: 0.2s; }
.apg-loading-dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes apg-dot-flash {
    0%, 60%, 100% { opacity: 0; }
    30%           { opacity: 1; }
}

.cancel-generate-btn {
    padding: 6px 18px;
    border: 1px solid var(--apg-border);
    border-radius: var(--apg-radius-sm);
    background: var(--apg-surface);
    color: var(--apg-text-muted);
    font-size: 13px;
    cursor: pointer;
    transition: all var(--apg-transition);
    margin-top: 4px;
}

.cancel-generate-btn:hover {
    border-color: var(--apg-danger);
    color: var(--apg-danger);
}

/* ============================================================
   明信片卡片视觉样式
   ============================================================ */
.postcard-card {
    width: 100%;
    max-width: 440px;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0,0,0,.14), 0 2px 8px rgba(0,0,0,.10);
    border: 2px solid var(--apg-border);
    background: var(--apg-surface);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
    animation: apg-card-in 0.42s cubic-bezier(0.4, 0, 0.2, 1) both;
}

@keyframes apg-card-in {
    from { opacity: 0; transform: translateY(12px) scale(0.97); }
    to   { opacity: 1; transform: translateY(0)   scale(1); }
}

.postcard-card:hover {
    box-shadow: 0 12px 40px rgba(0,0,0,.18), 0 2px 8px rgba(0,0,0,.10);
    transform: translateY(-2px);
}

/* 明信片主题边框颜色适配 */
.pc-theme-warmOrange   { border-color: var(--pc-warmOrange-border); }
.pc-theme-skyBlue      { border-color: var(--pc-skyBlue-border); }
.pc-theme-roseRed      { border-color: var(--pc-roseRed-border); }
.pc-theme-springGreen  { border-color: var(--pc-springGreen-border); }
.pc-theme-lavender     { border-color: var(--pc-lavender-border); }
.pc-theme-golden       { border-color: var(--pc-golden-border); }

/* 明信片顶部装饰头 */
.postcard-header {
    padding: 18px 20px 14px;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

.postcard-header::after {
    content: '';
    position: absolute;
    bottom: -18px;
    left: 0;
    right: 0;
    height: 36px;
    background: inherit;
    border-radius: 50%;
}

/* 主题头色 */
.pc-theme-warmOrange   .postcard-header { background: var(--pc-warmOrange-header); }
.pc-theme-skyBlue      .postcard-header { background: var(--pc-skyBlue-header); }
.pc-theme-roseRed      .postcard-header { background: var(--pc-roseRed-header); }
.pc-theme-springGreen  .postcard-header { background: var(--pc-springGreen-header); }
.pc-theme-lavender     .postcard-header { background: var(--pc-lavender-header); }
.pc-theme-golden       .postcard-header { background: var(--pc-golden-header); }

/* 默认主题 */
.postcard-card:not([class*="pc-theme-"]) .postcard-header {
    background: linear-gradient(135deg, #e55c8a, #a855f7);
}

.postcard-header-left { display: flex; flex-direction: column; gap: 4px; }

.postcard-occasion-emoji { font-size: 28px; }

.postcard-to {
    font-size: 14px;
    font-weight: 700;
    opacity: 0.95;
    letter-spacing: 0.3px;
}

.postcard-to-label {
    font-size: 11px;
    opacity: 0.75;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

/* 邮票装饰 */
.postcard-stamp {
    width: 56px;
    height: 68px;
    background: rgba(255,255,255,.22);
    border-radius: 4px;
    border: 2px dashed rgba(255,255,255,.50);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    flex-shrink: 0;
    padding: 4px;
}

.postcard-stamp-emoji { font-size: 22px; }

.postcard-stamp-label {
    font-size: 9px;
    color: rgba(255,255,255,.85);
    text-align: center;
    line-height: 1.3;
    font-weight: 600;
    letter-spacing: 0.3px;
}

/* 明信片正文区 */
.postcard-body {
    padding: 22px 22px 18px;
    background: var(--apg-surface);
}

/* 主题背景 */
.pc-theme-warmOrange  .postcard-body { background: var(--pc-warmOrange-bg); }
.pc-theme-skyBlue     .postcard-body { background: var(--pc-skyBlue-bg); }
.pc-theme-roseRed     .postcard-body { background: var(--pc-roseRed-bg); }
.pc-theme-springGreen .postcard-body { background: var(--pc-springGreen-bg); }
.pc-theme-lavender    .postcard-body { background: var(--pc-lavender-bg); }
.pc-theme-golden      .postcard-body { background: var(--pc-golden-bg); }

/* 内容分隔线 */
.postcard-divider {
    height: 1px;
    border: none;
    margin: 12px 0;
    opacity: 0.3;
    background: currentColor;
}

/* 各章节段落 */
.postcard-section { margin-bottom: 12px; }
.postcard-section:last-child { margin-bottom: 0; }

.postcard-section-text {
    font-size: 14px;
    color: var(--apg-text);
    line-height: 1.8;
    font-family: 'Georgia', 'STSong', '宋体', serif;
}

.postcard-greeting-text {
    font-size: 15px;
    font-weight: 600;
    color: var(--apg-text);
    font-family: 'Georgia', 'STSong', '宋体', serif;
    margin-bottom: 12px;
}

.postcard-wish-text {
    font-size: 13px;
    font-style: italic;
    color: var(--apg-primary);
    line-height: 1.7;
    background: rgba(229,92,138,.07);
    border-left: 3px solid var(--apg-primary);
    padding: 8px 12px;
    border-radius: 0 6px 6px 0;
    margin: 8px 0;
}

.postcard-signature-text {
    font-size: 13px;
    color: var(--apg-text-muted);
    text-align: right;
    margin-top: 12px;
    font-style: italic;
    line-height: 1.7;
}

/* 明信片底部装饰 */
.postcard-footer {
    padding: 10px 22px 14px;
    background: var(--apg-surface);
    border-top: 1px dashed var(--apg-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    opacity: 0.78;
}

.pc-theme-warmOrange  .postcard-footer { background: var(--pc-warmOrange-bg); }
.pc-theme-skyBlue     .postcard-footer { background: var(--pc-skyBlue-bg); }
.pc-theme-roseRed     .postcard-footer { background: var(--pc-roseRed-bg); }
.pc-theme-springGreen .postcard-footer { background: var(--pc-springGreen-bg); }
.pc-theme-lavender    .postcard-footer { background: var(--pc-lavender-bg); }
.pc-theme-golden      .postcard-footer { background: var(--pc-golden-bg); }

.postcard-footer-emoji { font-size: 14px; }

.postcard-footer-text {
    font-size: 10px;
    color: var(--apg-text-light);
    text-align: right;
    letter-spacing: 0.3px;
}

/* 原始文本展示 */
.postcard-raw-pre {
    white-space: pre-wrap;
    font-size: 13px;
    line-height: 1.8;
    font-family: inherit;
    margin: 0;
    padding: 0;
}

/* 工作日 / 周末语义化背景 */
.apg-weekday {
    --apg-bg: #fdf6f9;
}
.apg-weekend {
    --apg-bg: #fff8f2;
}
.apg-weekend .apg-main-content {
    background: linear-gradient(160deg, #fff8f2 0%, #fef3e8 100%);
}
.apg-weekend .apg-form,
.apg-weekend .history-list {
    background: linear-gradient(180deg, #fff8f2 0%, #fef3e8 100%);
}

/* 暗色主题覆盖周末/工作日背景（防止 CSS 变量优先级冲突） */
.apg-dark .apg-weekend,
.apg-dark .apg-weekday {
    --apg-bg: #1a0d17;
}
.apg-dark .apg-weekend .apg-main-content,
.apg-dark .apg-weekend .apg-form,
.apg-dark .apg-weekend .history-list {
    background: unset;
}

/* 错落入场动画 */
.hg-anim-in {
    animation: hg-anim-in 0.4s cubic-bezier(0.4, 0, 0.2, 1) both;
}

@keyframes hg-anim-in {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ---- 模态弹框 ---- */
.apg-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.45);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.apg-modal.open { display: flex; }

.apg-modal-content {
    background: var(--apg-surface);
    border-radius: var(--apg-radius);
    max-width: 700px;
    width: 92%;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--apg-shadow-lg);
    border: 1px solid var(--apg-border);
    animation: apg-modal-in 0.22s ease both;
}

@keyframes apg-modal-in {
    from { opacity: 0; transform: scale(0.96); }
    to   { opacity: 1; transform: scale(1); }
}

.apg-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border-bottom: 1px solid var(--apg-border);
    flex-shrink: 0;
}

.apg-modal-header h3 { margin: 0; font-size: 15px; font-weight: 700; color: var(--apg-text); }

.apg-modal-close {
    background: none;
    border: none;
    font-size: 16px;
    color: var(--apg-text-muted);
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 4px;
    transition: all var(--apg-transition);
}

.apg-modal-close:hover { background: var(--apg-primary-light); color: var(--apg-primary); }

.apg-modal-body { padding: 16px 18px; overflow-y: auto; }

.template-modal-hint { font-size: 12px; color: var(--apg-text-muted); margin: 0 0 14px; }

.template-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 10px;
}

.template-card {
    border: 2px solid var(--apg-border);
    border-radius: var(--apg-radius-sm);
    padding: 14px 12px;
    cursor: pointer;
    text-align: center;
    transition: all var(--apg-transition);
    background: var(--apg-bg);
}

.template-card:hover {
    border-color: var(--apg-primary);
    background: var(--apg-primary-light);
    transform: translateY(-2px);
    box-shadow: var(--apg-shadow-sm);
}

.template-card-icon { font-size: 28px; margin-bottom: 8px; }
.template-card-name { font-size: 13px; font-weight: 700; color: var(--apg-text); margin-bottom: 4px; }
.template-card-desc { font-size: 11px; color: var(--apg-text-muted); line-height: 1.4; }

/* ---- Toast ---- */
.apg-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--apg-text);
    color: #fff;
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 13px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
    z-index: 9999;
    max-width: 80vw;
    text-overflow: ellipsis;
    overflow: hidden;
}

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

.apg-toast.toast-success { background: var(--apg-success); }
.apg-toast.toast-error   { background: var(--apg-danger);  }
.apg-toast.toast-info    { background: #475569; }

/* ---- 响应式适配 ---- */
/* 全屏模式 */
.apg-container.apg-fullscreen {
    position: fixed !important;
    inset: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    max-width: none !important;
    margin: 0 !important;
    border-radius: 0 !important;
    z-index: 999;
    overflow-y: auto;
}

@media (max-width: 900px) {
    .apg-main-content {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto 1fr;
    }
    .apg-history-panel { max-height: 180px; border-right: none; border-bottom: 1px solid var(--apg-border); }
    .apg-editor-panel  { border-right: none; border-bottom: 1px solid var(--apg-border); }
    .apg-preview-panel { min-height: 400px; }
}

@media (max-width: 600px) {
    .apg-toolbar { gap: 2px; padding: 0 8px; }
    .apg-toolbar-btn { padding: 4px 8px; font-size: 12px; }
    .postcard-card { max-width: 100%; }
    .apg-style-selector { grid-template-columns: 1fr 1fr; }
}