/* GitHub 极简风格 - 整体界面样式 */

/* ===== 基础样式 ===== */
:root {
    /* GitHub 配色 */
    --color-canvas-default: #ffffff;
    --color-canvas-subtle: #f6f8fa;
    --color-border-default: #d0d7de;
    --color-border-muted: #d8dee4;
    --color-fg-default: #1f2328;
    --color-fg-muted: #656d76;
    --color-fg-subtle: #6e7781;
    --color-accent-fg: #0969da;
    --color-accent-emphasis: #0969da;
    --color-success-fg: #1a7f37;
    --color-danger-fg: #d1242f;
    --color-btn-bg: #f6f8fa;
    --color-btn-border: rgba(31,35,40,0.15);
    --color-btn-hover-bg: #f3f4f6;
    --color-btn-hover-border: rgba(31,35,40,0.15);
    --color-btn-active-bg: hsla(220,14%,93%,1);
    --color-btn-primary-bg: #1f883d;
    --color-btn-primary-hover-bg: #1a7f37;
    
    /* 字体 */
    --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

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

body {
    font-family: var(--font-stack);
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-fg-default);
    background-color: var(--color-canvas-default);
}

/* ===== 顶部导航栏 ===== */
.header {
    background-color: #24292f;
    color: #ffffff;
    padding: 16px;
    border-bottom: 1px solid #373e47;
}

.header-container {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.octicon {
    fill: currentColor;
    vertical-align: text-bottom;
}

.header-title {
    font-size: 20px;
    font-weight: 600;
    color: #ffffff;
}

.header-right {
    display: flex;
    gap: 8px;
}

/* ===== 工具栏 ===== */
.toolbar {
    background-color: var(--color-canvas-subtle);
    border-bottom: 1px solid var(--color-border-default);
    padding: 8px 16px;
}

.toolbar-container {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.toolbar-group {
    display: flex;
    gap: 8px;
}

/* ===== 按钮样式 ===== */
.btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 5px 16px;
    font-size: 14px;
    font-weight: 500;
    line-height: 20px;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: 1px solid;
    border-radius: 6px;
    appearance: none;
    text-decoration: none;
    background-color: var(--color-btn-bg);
    border-color: var(--color-btn-border);
    color: var(--color-fg-default);
    transition: 80ms cubic-bezier(0.33, 1, 0.68, 1);
    transition-property: color, background-color, box-shadow, border-color;
}

.btn:hover {
    background-color: var(--color-btn-hover-bg);
    border-color: var(--color-btn-hover-border);
}

.btn:active {
    background-color: var(--color-btn-active-bg);
}

.btn-sm {
    padding: 3px 12px;
    font-size: 12px;
}

.btn-primary {
    color: #ffffff;
    background-color: var(--color-btn-primary-bg);
    border-color: rgba(31, 35, 40, 0.15);
}

.btn-primary:hover {
    background-color: var(--color-btn-primary-hover-bg);
}

.btn-block {
    display: flex;
    width: 100%;
    justify-content: center;
    margin-bottom: 8px;
}

/* ===== 主内容区 ===== */
.main-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 16px;
    display: flex;
    gap: 16px;
    height: calc(100vh - 140px);
}

.main-container.vertical {
    flex-direction: column;
}

.editor-panel,
.preview-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--color-border-default);
    border-radius: 6px;
    background-color: var(--color-canvas-default);
    overflow: hidden;
}

.panel-header {
    padding: 8px 16px;
    background-color: var(--color-canvas-subtle);
    border-bottom: 1px solid var(--color-border-default);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-fg-default);
}

.panel-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.panel-stats {
    font-size: 12px;
    color: var(--color-fg-muted);
    display: flex;
    gap: 8px;
    align-items: center;
}

.separator {
    color: var(--color-border-default);
}

/* ===== 编辑器 ===== */
.editor-wrapper {
    flex: 1;
    overflow: hidden;
}

.CodeMirror {
    height: 100%;
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.6;
}

#editor {
    width: 100%;
    height: 100%;
    border: none;
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.6;
    resize: none;
    outline: none;
}

/* ===== 预览区 ===== */
.preview-wrapper {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

.preview-content {
    max-width: 900px;
    margin: 0 auto;
}

/* ===== 模态框 ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 999;
    background-color: rgba(31, 35, 40, 0.5);
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 600px;
    background-color: var(--color-canvas-default);
    border: 1px solid var(--color-border-default);
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(31, 35, 40, 0.2);
    animation: modal-fade-in 0.2s ease-out;
}

@keyframes modal-fade-in {
    from {
        transform: scale(0.95);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.modal-header {
    padding: 16px;
    border-bottom: 1px solid var(--color-border-default);
}

.modal-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-fg-default);
    margin: 0;
}

.modal-body {
    padding: 16px;
    max-height: 60vh;
    overflow-y: auto;
}

.modal-footer {
    padding: 16px;
    border-top: 1px solid var(--color-border-default);
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

/* ===== 表单元素 ===== */
.form-checkbox {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
}

.form-checkbox input[type="checkbox"] {
    margin-right: 8px;
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.form-checkbox label {
    cursor: pointer;
    user-select: none;
}

.form-control {
    width: 100%;
    padding: 5px 12px;
    font-size: 14px;
    line-height: 20px;
    color: var(--color-fg-default);
    background-color: var(--color-canvas-default);
    border: 1px solid var(--color-border-default);
    border-radius: 6px;
    outline: none;
    box-shadow: inset 0 1px 0 rgba(208, 215, 222, 0.2);
}

.form-control:focus {
    border-color: var(--color-accent-emphasis);
    box-shadow: 0 0 0 3px rgba(9, 105, 218, 0.3);
}

/* ===== 标签导航 ===== */
.tabnav {
    margin-bottom: 16px;
}

.tabnav-tabs {
    display: flex;
    border-bottom: 1px solid var(--color-border-default);
}

.tabnav-tab {
    padding: 8px 16px;
    font-size: 14px;
    line-height: 20px;
    color: var(--color-fg-default);
    background-color: transparent;
    border: 1px solid transparent;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    margin-bottom: -1px;
}

.tabnav-tab:hover {
    color: var(--color-fg-default);
    text-decoration: none;
    border-bottom-color: var(--color-border-muted);
}

.tabnav-tab.active {
    color: var(--color-fg-default);
    border-bottom-color: #fd8c73;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ===== 规则表单 ===== */
.rule-form {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.rule-form .form-control {
    flex: 1;
    min-width: 150px;
}

.rules-list {
    max-height: 400px;
    overflow-y: auto;
}

.rule-item {
    padding: 12px;
    background-color: var(--color-canvas-subtle);
    border: 1px solid var(--color-border-default);
    border-radius: 6px;
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.rule-info {
    flex: 1;
}

.rule-find {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--color-accent-fg);
    font-weight: 600;
}

.rule-replace {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--color-success-fg);
}

/* ===== Toast 通知 ===== */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 12px 16px;
    background-color: #24292f;
    color: #ffffff;
    border-radius: 6px;
    box-shadow: 0 8px 24px rgba(31, 35, 40, 0.2);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 响应式设计 ===== */
@media (max-width: 768px) {
    .main-container {
        flex-direction: column;
        height: auto;
    }
    
    .header-container,
    .toolbar-container {
        flex-direction: column;
        gap: 12px;
    }
    
    .toolbar-group {
        width: 100%;
        justify-content: space-between;
    }
    
    .modal-dialog {
        width: 95%;
        margin: 24px auto;
    }
}

/* ===== 悬浮按钮样式 ===== */
.floating-buttons {
    position: fixed;
    right: 30px;
    bottom: 30px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 999;
}

.floating-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: none;
    background: var(--color-accent-emphasis);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
}

.floating-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.floating-btn:active {
    transform: translateY(0);
}

.floating-btn-clean {
    background: #2da44e;
}

.floating-btn-clean:hover {
    background: #2c974b;
}

.floating-btn-export {
    background: #0969da;
}

.floating-btn-export:hover {
    background: #0860ca;
}

.floating-btn-bookmark {
    background: #fb8500;
}

.floating-btn-bookmark:hover {
    background: #e07600;
}

/* 悬浮导出菜单 */
.floating-export-menu {
    position: fixed;
    right: 100px;
    bottom: 30px;
    background: var(--color-canvas-default);
    border: 1px solid var(--color-border-default);
    border-radius: 6px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    min-width: 160px;
    z-index: 998;
}

.floating-export-menu a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    color: var(--color-fg-default);
    text-decoration: none;
    transition: background 0.2s;
}

.floating-export-menu a:hover {
    background: var(--color-canvas-subtle);
}

.floating-export-menu a:first-child {
    border-radius: 6px 6px 0 0;
}

.floating-export-menu a:last-child {
    border-radius: 0 0 6px 6px;
}

.floating-export-menu svg {
    flex-shrink: 0;
}

/* ===== 书签功能样式 ===== */
.btn-warning {
    background-color: #fb8500;
    color: white;
    border-color: #fb8500;
}

.btn-warning:hover {
    background-color: #e07600;
    border-color: #e07600;
}

.btn-sm {
    padding: 4px 12px;
    font-size: 12px;
}

.btn-sm[data-category].active {
    background-color: var(--color-accent-emphasis);
    color: white;
}

.form-input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--color-border-default);
    border-radius: 6px;
    font-size: 14px;
    font-family: var(--font-stack);
    transition: border-color 0.2s;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-accent-emphasis);
    box-shadow: 0 0 0 3px rgba(9, 105, 218, 0.1);
}

.bookmark-item {
    padding: 16px;
    border: 1px solid var(--color-border-default);
    border-radius: 6px;
    margin-bottom: 12px;
    background-color: var(--color-canvas-default);
    transition: all 0.2s;
}

.bookmark-item:hover {
    border-color: var(--color-accent-emphasis);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.bookmark-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.bookmark-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-fg-default);
    margin: 0;
}

.bookmark-category {
    display: inline-block;
    padding: 2px 8px;
    background-color: var(--color-canvas-subtle);
    border: 1px solid var(--color-border-default);
    border-radius: 12px;
    font-size: 12px;
    color: var(--color-fg-muted);
}

.bookmark-meta {
    font-size: 12px;
    color: var(--color-fg-muted);
    margin-bottom: 8px;
}

.bookmark-content {
    font-size: 14px;
    color: var(--color-fg-default);
    line-height: 1.6;
    max-height: 100px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.bookmark-actions {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

.bookmark-actions .btn {
    padding: 4px 12px;
    font-size: 12px;
}

.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--color-fg-muted);
}

.empty-state svg {
    width: 64px;
    height: 64px;
    margin-bottom: 16px;
    opacity: 0.3;
}