/* ========================================
   Apple-style Design System
   ======================================== */

/* === Reset & Base === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
    background-color: #ffffff;
    color: #1d1d1f;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.app {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;
}

.hidden {
    display: none;
}

/* === Header === */
.header {
    display: flex;
    flex-direction: column;
    padding: 16px 0 0;
    border-bottom: 1px solid #d2d2d7;
}

.header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 12px;
}

.header-row-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-row-settings {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-top: 1px solid #f0f0f2;
}

.header h1 {
    font-size: 20px;
    font-weight: 600;
    color: #1d1d1f;
    letter-spacing: -0.3px;
}

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

.header-settings-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* === Buttons === */
.btn {
    padding: 6px 14px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.btn-secondary {
    background-color: #ffffff;
    color: #1d1d1f;
    border: 1px solid #d2d2d7;
}

.btn-secondary:hover {
    background-color: #f5f5f7;
}

.btn-secondary:active {
    background-color: #e8e8ed;
}

.btn-white {
    background-color: #ffffff;
    color: #1d1d1f;
    border: 1px solid #d2d2d7;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.btn-white:hover {
    background-color: #f5f5f7;
    box-shadow: 0 2px 6px rgba(0,0,0,0.12);
}

.btn-white:active {
    background-color: #e8e8ed;
}

.btn-primary {
    background-color: #1d1d1f;
    color: #ffffff;
}

.btn-primary:hover {
    background-color: #333336;
}

.btn-primary:active {
    background-color: #000000;
}

.btn-sm {
    padding: 4px 10px;
    font-size: 12px;
}

/* === Hint Control (Segmented) === */
.hint-control {
    display: inline-flex;
    align-items: center;
    gap: 0;
    background: #f5f5f7;
    border-radius: 8px;
    padding: 2px;
}

.hint-control .hint-label {
    font-size: 12px;
    color: #86868b;
    padding: 0 8px;
    font-weight: 500;
}

.hint-level-btn {
    border: none;
    background: transparent;
    color: #86868b;
    font-size: 12px;
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.hint-level-btn:hover {
    color: #1d1d1f;
}

.hint-level-btn.active {
    background: #ffffff;
    color: #1d1d1f;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.hint-control.disabled {
    opacity: 0.4;
    pointer-events: none;
}

/* === Settings Dropdown === */
.settings-dropdown-wrap {
    position: relative;
}

.settings-dropdown-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 500;
    border: 1px solid #d2d2d7;
    background: #ffffff;
    color: #1d1d1f;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.settings-dropdown-btn:hover {
    background: #f5f5f7;
}

.settings-dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 320px;
    background: #ffffff;
    border: 1px solid #d2d2d7;
    border-radius: 10px;
    padding: 8px 0;
    z-index: 100;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.settings-dropdown-menu.open {
    display: block;
}

.settings-row {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 18px;
}

.settings-label {
    font-size: 14px;
    color: #86868b;
    font-weight: 500;
    min-width: 42px;
    line-height: 1.3;
}

/* 声音（女声/男声）选项隐藏：保留代码与逻辑，恢复时删除本规则 */
#settingsDropdownMenu .settings-row:has(#voiceControl) {
    display: none;
}

/* 设置面板内按钮随面板整体加大（仅限本面板，不影响其他 hint-control） */
.settings-dropdown-menu .hint-level-btn {
    font-size: 14px;
    padding: 7px 14px;
}

/* 模式四选项单行横排：不挤压、不折行（仅限设置面板内） */
.settings-dropdown-menu #themeControl {
    flex-wrap: nowrap;
}

.settings-dropdown-menu #themeControl .hint-level-btn {
    padding: 7px 10px;
    white-space: nowrap;
}

/* === Stats === */
.stats {
    display: flex;
    gap: 12px;
    font-size: 12px;
    color: #86868b;
    font-weight: 500;
}

/* === Story List === */
.story-list {
    background: #ffffff;
    border: 1px solid #d2d2d7;
    border-radius: 12px;
    padding: 24px;
    margin: 20px 0;
}

.story-list h2 {
    margin-bottom: 16px;
    font-size: 17px;
    font-weight: 600;
    color: #1d1d1f;
}

.story-items {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 8px;
}

.story-item {
    padding: 12px 14px;
    background: #ffffff;
    border: 1px solid #d2d2d7;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.story-item:hover {
    background: #f5f5f7;
    border-color: #1d1d1f;
}

.story-item.active {
    background: #1d1d1f;
    color: #ffffff;
    border-color: #1d1d1f;
}

.story-item.story-done {
    border-color: #1d1d1f;
}

.story-item.story-done .story-item-title::after {
    content: ' ✓';
    color: #1d1d1f;
    font-weight: 600;
}

.story-item-title {
    font-weight: 500;
    font-size: 14px;
    margin-bottom: 6px;
}

.story-progress-bar {
    height: 4px;
    background: #d2d2d7;
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 4px;
}

.story-progress-fill {
    height: 100%;
    background: #1d1d1f;
    border-radius: 2px;
    transition: width 0.3s ease;
}

.story-item.story-done .story-progress-fill {
    background: #1d1d1f;
}

.story-progress-text {
    font-size: 11px;
    color: #86868b;
}

/* === Story Content === */
.story-content {
    background: #ffffff;
    border: 1px solid #d2d2d7;
    border-radius: 12px;
    padding: 32px;
    margin: 20px 0;
}

/* para-break: paragraph separator, fixed height independent of line-height */
.para-break {
    display: block;
    height: 16px;
}

.story-title {
    font-size: 24px;
    font-weight: 600;
    color: inherit;
    text-align: center;
    letter-spacing: -0.2px;
    flex: 1;
    min-width: 0;
}

.story-summary {
    display: block;
    width: fit-content;
    max-width: 96%;
    font-size: 15px;
    font-weight: 400;
    color: inherit;
    margin: 6px auto 0;
    padding: 6px 14px;
    background: rgba(120, 120, 128, 0.14);
    border-radius: 8px;
    line-height: 1.5;
    letter-spacing: 0;
    text-align: center;
}

.story-toolbar {
    position: relative;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.story-toolbar > .story-title {
    flex: 1 0 100%;
    order: -1;
}

.story-toolbar > .level-filter {
    margin-left: auto;
}

/* === Level Filter === */
.level-filter {
    position: relative;
}

.level-dropdown-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 500;
    border: 1px solid #d2d2d7;
    background: #ffffff;
    color: #1d1d1f;
    border-radius: 8px;
    cursor: pointer;
    max-width: 200px;
    transition: all 0.15s ease;
}

.level-dropdown-btn:hover {
    background: #f5f5f7;
}

#levelDropdownText {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.level-caret {
    font-size: 10px;
    color: #86868b;
}

.level-dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 170px;
    background: #ffffff;
    border: 1px solid #d2d2d7;
    border-radius: 10px;
    padding: 4px 0;
    z-index: 100;
}

.level-dropdown-menu.open {
    display: block;
}

.level-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    font-size: 13px;
    color: #1d1d1f;
    cursor: pointer;
    transition: background 0.1s ease;
}

.level-option:hover {
    background: #f5f5f7;
}

.level-option input {
    margin: 0;
    cursor: pointer;
    accent-color: #1d1d1f;
}

.level-option .level-name {
    font-weight: 600;
    min-width: 34px;
}

.level-option .level-count {
    margin-left: auto;
    color: #86868b;
    font-size: 12px;
}

.level-option.disabled {
    color: #c7c7cc;
    cursor: not-allowed;
}

.level-option.disabled:hover {
    background: transparent;
}

.level-option.disabled input {
    cursor: not-allowed;
}

.revealed-word {
    color: #1d1d1f;
}

/* === Story Text === */
.story-text {
    font-size: var(--text-size, 18px);
    line-height: var(--text-lh, 2.5);
    color: #1d1d1f;
}

/* === Blank Input === */
.blank-input {
    display: inline-block;
    width: 100px;
    padding: 2px 4px;
    border: none;
    border-radius: 6px;
    font-size: var(--text-size, 18px);
    font-size: max(16px, var(--text-size, 18px));
    text-align: center;
    margin: 0;
    background: transparent;
    transition: background 0.15s ease;
    color: inherit;
    caret-color: transparent !important;
    -webkit-user-select: none;
    user-select: none;
}

.blank-input::placeholder {
    color: transparent;
}

/* 首字母模式：placeholder 可见 */
.blank-input.initial-mode::placeholder {
    color: #86868b;
    font-family: "SF Mono", "SFMono-Regular", Consolas, "Courier New", monospace;
    letter-spacing: 0;
    font-size: 14px;
}

.blank-input:hover,
.blank-input:focus {
    outline: none;
    border: none;
    background: #f5f5f7;
    box-shadow: none;
}

.blank-input.correct {
    color: inherit;
    font-weight: 700;
    background: transparent;
    -webkit-text-fill-color: currentColor;
    opacity: 1;
}

.reverse-input.correct {
    color: inherit;
    font-weight: 700;
    background: transparent;
    -webkit-text-fill-color: currentColor;
    opacity: 1;
}

.blank-input.incorrect {
    color: #e74c3c !important;
    background: transparent;
}

.blank-input.revealed,
.reverse-input.revealed {
    color: inherit;
    font-weight: 700;
    background: #e6f4ea;
    -webkit-text-fill-color: currentColor;
    opacity: 1;
    box-shadow: inset 0 -2px 0 #34a853;
}

.wrong-mark {
    color: #e74c3c;
    font-weight: 600;
    font-size: 14px;
    margin-right: 6px;
    line-height: 1;
}

/* === Hint === */
.hint {
    color: #1d1d1f;
    font-size: var(--text-size, 16px);
    font-weight: 700;
    margin: 0 4px 0 0;
    padding: 0;
}

.full-word {
    color: inherit;
    font-weight: inherit;
    padding: 0;
}

/* === Reverse Practice Mode (英→中) === */
.reverse-blank {
    display: inline-flex;
    align-items: center;
    gap: 2px;
}

.reverse-label {
    color: #1d1d1f;
    font-weight: 700;
    font-size: var(--text-size, 16px);
}

.reverse-input {
    width: 5em;
    text-align: center;
    font-size: var(--text-size, 16px);
}

/* === Blank Wrapper (Parentheses) === */
.blank-wrapper {
    display: inline-flex;
    align-items: center;
    gap: 0;
    margin: 0 4px;
    padding: 0 4px 0 6px;
    background: #f5f5f7;
    border-radius: 8px;
    vertical-align: baseline;
    position: relative;
    line-height: 1.4;
}

/* 括号（真实 DOM 节点） */
.blank-paren {
    color: #86868b;
    font-size: 15px;
    line-height: 1;
    flex-shrink: 0;
}

/* === Eye Button === */
.eye-btn {
    width: 20px;
    height: 20px;
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 13px;
    padding: 0;
    margin-left: 2px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    opacity: 0.3;
    transition: opacity 0.15s ease;
    position: relative;
    z-index: 20;
}

.eye-btn:hover {
    opacity: 0.8;
}

.eye-btn.eye-correct {
    opacity: 1;
    color: #000;
    font-weight: bold;
}

.eye-btn.eye-wrong {
    opacity: 1;
    color: #ff3b30;
    font-weight: bold;
}

[data-theme="dark"] .eye-btn {
    opacity: 0.45;
}

[data-theme="dark"] .eye-btn.eye-correct {
    color: #f5f5f7;
}

[data-theme="dark"] .eye-btn.eye-wrong {
    color: #ff453a;
}

/* === Answer Overlay === */
.answer-overlay {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f5f5f7;
    color: #1d1d1f;
    font-size: 15px;
    font-weight: 600;
    border-radius: 8px;
    border: 1px solid #d2d2d7;
    pointer-events: none;
    z-index: 10;
    white-space: nowrap;
}

/* === Word Card Active === */
.blank-wrapper.wc-active {
    background: #e8e8ed;
    box-shadow: 0 0 0 2px #1d1d1f;
}

/* === Speak Buttons === */
.speak-btn {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: none;
    background: #1d1d1f;
    color: #ffffff;
    font-size: 11px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
    flex-shrink: 0;
    padding: 0;
    line-height: 1;
}

.speak-btn:hover {
    background: #333336;
    transform: scale(1.05);
}

.speak-btn-inline {
    border: none;
    background: transparent;
    color: #1d1d1f;
    font-size: 13px;
    cursor: pointer;
    padding: 0 2px;
    transition: transform 0.15s ease;
    vertical-align: middle;
}

.speak-btn-inline:hover {
    transform: scale(1.15);
}

.panel-speak-btn {
    border: none;
    background: #f5f5f7;
    color: #1d1d1f;
    font-size: 16px;
    cursor: pointer;
    border-radius: 8px;
    padding: 4px 10px;
    margin-left: 8px;
    vertical-align: middle;
    transition: all 0.15s ease;
}

.panel-speak-btn:hover {
    background: #1d1d1f;
    color: #ffffff;
}

/* === Mistakes Badge === */
#mistakesBtn {
    position: relative;
}

.mistake-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background: #e74c3c;
    color: #ffffff;
    font-size: 10px;
    font-weight: 600;
    min-width: 16px;
    height: 16px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
}

/* === Mistakes Review === */
.mistakes-empty {
    text-align: center;
    color: #86868b;
    font-size: 16px;
    padding: 60px 20px;
}

.mistake-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    margin-bottom: 8px;
    background: #ffffff;
    border: 1px solid #d2d2d7;
    border-radius: 10px;
    transition: all 0.15s ease;
}

.mistake-item:hover {
    background: #f5f5f7;
}

.mistake-word {
    font-size: 16px;
    font-weight: 600;
    color: #1d1d1f;
    min-width: 100px;
}

.mistake-hint {
    color: #86868b;
    font-size: 14px;
}

.mistake-phonetic {
    color: #86868b;
    font-size: 12px;
    font-style: italic;
}

.mistake-meta {
    color: #86868b;
    font-size: 11px;
    margin-left: auto;
}

.mistake-due {
    border-color: #1d1d1f;
}

.srs-due {
    color: #e74c3c;
    font-weight: 600;
    margin-left: 4px;
}

.srs-days {
    color: #1d1d1f;
    margin-left: 4px;
}

.mistake-input {
    width: 120px;
}

/* === Daily Review Badge === */
#dailyReviewBtn {
    position: relative;
}

/* === Confirm Modal === */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
}

.modal-overlay.hidden {
    display: none;
}

.modal-box {
    background: #ffffff;
    border-radius: 14px;
    padding: 28px 24px 20px;
    min-width: 300px;
    max-width: 400px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.modal-msg {
    font-size: 16px;
    color: #1d1d1f;
    line-height: 1.5;
    margin-bottom: 24px;
    text-align: center;
}

.modal-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

.modal-actions .btn {
    min-width: 72px;
}

/* === Word List === */
.word-list-header {
    text-align: center;
    color: #86868b;
    font-size: 14px;
    margin-bottom: 20px;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.wl-level-filter {
    position: relative;
}

.wl-level-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 500;
    border: 1px solid #d2d2d7;
    background: #ffffff;
    color: #1d1d1f;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.wl-level-btn:hover {
    background: #f5f5f7;
}

#wlLevelText {
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.wl-level-menu {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 160px;
    background: #ffffff;
    border: 1px solid #d2d2d7;
    border-radius: 10px;
    padding: 4px 0;
    z-index: 100;
}

.wl-level-menu.open {
    display: block;
}

.wl-level-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    font-size: 13px;
    color: #1d1d1f;
    cursor: pointer;
    transition: background 0.1s ease;
}

.wl-level-option:hover {
    background: #f5f5f7;
}

.wl-level-name {
    flex: 1;
}

.wl-level-count {
    font-size: 12px;
    color: #86868b;
}

.wl-level-option input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: #1d1d1f;
}

.word-list-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

@media (max-width: 600px) {
    .word-list-grid {
        grid-template-columns: 1fr;
    }
}

/* 卡片/标题类 UI 渲染在正文容器内，需脱离正文 2.5 行距与用户行距设置 */
.story-text .word-list-header,
.story-text .wl-card,
.story-text .quiz-item {
    line-height: 1.4;
}

.wl-card {
    background: #ffffff;
    border: 1px solid #d2d2d7;
    border-radius: 16px;
    padding: 20px 22px;
    color: #1d1d1f;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.wl-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.wl-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 6px;
}

.wl-card-word {
    font-size: 22px;
    font-weight: 600;
    color: #1d1d1f;
    padding: 0;
}

.wl-card-top-right {
    display: flex;
    align-items: center;
    gap: 6px;
}

.wl-card-level {
    font-size: 10px;
    font-weight: 600;
    padding: 1px 5px;
    border-radius: 4px;
    background: #f5f5f7;
    color: #86868b;
}

.wl-card-fav {
    border: none;
    background: transparent;
    font-size: 16px;
    cursor: pointer;
    padding: 0;
    color: #d2d2d7;
    transition: color 0.15s ease;
}

.wl-card-fav:hover {
    color: #f5a623;
}

.wl-card-fav.active {
    color: #f5a623;
}

.wl-card-phonetic {
    color: #86868b;
    font-size: 13px;
    font-style: italic;
    margin-bottom: 6px;
    min-height: 18px;
}

.wl-card-hint {
    color: #86868b;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

.wl-card-example {
    font-size: 12px;
    line-height: 1.5;
    margin-bottom: 8px;
}

.wl-card-example:empty {
    display: none;
}

.wl-ex-label {
    font-size: 11px;
    font-weight: 600;
    color: #86868b;
    margin-bottom: 2px;
}

.wl-ex-zh {
    color: #86868b;
}

.wl-card-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.wl-card-word-group {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
}

.wl-card-actions-end {
    justify-content: flex-end;
}

.wl-card-delete {
    border: 1px solid #d2d2d7;
    background: #ffffff;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    padding: 4px 12px;
    border-radius: 6px;
    color: #ff3b30;
    transition: all 0.15s ease;
}

.wl-card-delete:hover {
    background: #fff5f5;
    border-color: #ff3b30;
}

.wl-card-input {
    flex: 1;
    min-width: 0;
    padding: 8px 12px;
    border: 1px solid #d2d2d7;
    border-radius: 8px;
    font-size: 16px;
    background: #ffffff;
    color: #1d1d1f;
    transition: border-color 0.2s ease;
}

.wl-card-input:focus {
    outline: none;
    border-color: #0071e3;
}

.wl-card-input.correct {
    border-color: #34c759;
    background: #f0faf4;
}

.wl-card-input.incorrect {
    border-color: #ff3b30;
    background: #fff5f5;
}

.wl-card.mistake-due {
    border-color: #ff9500;
    box-shadow: 0 0 0 1px rgba(255, 149, 0, 0.3);
}

.wl-card-speak-btns {
    display: flex;
    gap: 4px;
}

.wl-card-speak-us,
.wl-card-speak-uk {
    border: none;
    background: transparent;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 4px;
    color: #86868b;
    transition: all 0.15s ease;
}

.wl-card-speak-us:hover,
.wl-card-speak-uk:hover {
    background: #f5f5f7;
    color: #1d1d1f;
}

.wl-card-mastered {
    border: 1px solid #d2d2d7;
    background: #ffffff;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    padding: 4px 12px;
    border-radius: 6px;
    color: #1d1d1f;
    transition: all 0.15s ease;
}

.wl-card-mastered:hover {
    background: #f5f5f7;
}

.wl-card-mastered.active {
    background: #1d1d1f;
    color: #ffffff;
    border-color: #1d1d1f;
}

/* === Quiz Mode === */
.quiz-item {
    margin-bottom: 16px;
    padding: 16px;
    background: #ffffff;
    border: 1px solid #d2d2d7;
    border-radius: 10px;
}

.quiz-question {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 17px;
    font-weight: 500;
    color: #1d1d1f;
}

.quiz-hint {
    flex: 1;
}

.quiz-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.quiz-option {
    padding: 10px 16px;
    border: 1px solid #d2d2d7;
    background: #ffffff;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.15s ease;
    text-align: left;
    font-weight: 500;
}

.quiz-option:hover:not(:disabled) {
    background: #f5f5f7;
    border-color: #1d1d1f;
}

.quiz-option.quiz-correct {
    border-color: #1d1d1f;
    background: #1d1d1f;
    color: #ffffff;
}

.quiz-option.quiz-wrong {
    border-color: #e74c3c;
    background: #fef2f2;
    color: #e74c3c;
}

.quiz-option:disabled {
    cursor: not-allowed;
    opacity: 0.7;
}

/* === Word Card FAB === */
.word-card-fab {
    position: fixed;
    right: 24px;
    bottom: 100px;
    padding: 8px 16px;
    border: none;
    border-radius: 8px;
    background: #1d1d1f;
    color: #ffffff;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
    z-index: 999;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.word-card-fab:hover {
    background: #333336;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.16);
}

.word-card-fab.active {
    background: #333336;
}

/* === Word Card Panel (Dark) === */
.word-card-panel {
    position: fixed;
    right: 24px;
    bottom: 160px;
    width: min(373px, calc(100vw - 32px));
    background: #1d1d1f;
    border: 1px solid #333336;
    border-radius: 14px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    z-index: 1000;
    animation: wcSlideIn 0.2s ease;
    overflow: hidden;
    max-height: calc(100vh - 190px);
    max-height: calc(100dvh - 190px);
    overflow-y: auto;
    color: #f5f5f7;
}

@keyframes wcSlideIn {
    from { opacity: 0; transform: translateY(8px) scale(0.97); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

.wc-close {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 22px;
    height: 22px;
    border: none;
    background: transparent;
    color: #86868b;
    border-radius: 50%;
    cursor: pointer;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
    z-index: 1;
}

.wc-close:hover {
    background: #333336;
    color: #f5f5f7;
}

.wc-body {
    padding: 14px 16px 8px;
    text-align: left;
}

.wc-word-row {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 4px;
}

.wc-word {
    font-size: 20px;
    font-weight: 600;
    color: #f5f5f7;
    letter-spacing: -0.3px;
    white-space: nowrap;
    background: #333336;
    padding: 4px 12px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.wc-phonetic-us {
    color: #a1a1a6;
    font-size: 13px;
    font-style: italic;
    margin-left: 4px;
    flex-shrink: 0;
}

.wc-tags {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
    margin-left: auto;
}

.wc-level,
.wc-pos {
    display: inline-block;
    font-size: 10px;
    font-weight: 600;
    padding: 1px 5px;
    border-radius: 4px;
    background: #333336;
    color: #a1a1a6;
    line-height: 1.4;
    flex-shrink: 0;
}

.wc-level-a { background: #333336; color: #f5f5f7; }
.wc-level-b { background: #333336; color: #a1a1a6; }
.wc-level-c { background: #333336; color: #a1a1a6; }

.wc-hint {
    color: #f5f5f7;
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 4px;
}

/* === Word Card Example === */
.wc-example {
    font-size: 13px;
    color: #86868b;
    line-height: 1.5;
    font-style: italic;
    min-height: 0;
    padding: 0 8px;
    margin-top: 4px;
}

/* === Word Card Actions === */
.wc-actions {
    display: flex;
    gap: 8px;
    padding: 0 16px 8px;
}

.wc-action-btn {
    flex: 1;
    padding: 6px 0;
    border: 1px solid #48484a;
    background: #1d1d1f;
    color: #f5f5f7;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
}

.wc-action-btn:hover {
    background: #333336;
}

.wc-action-btn.active {
    background: #f5f5f7;
    color: #1d1d1f;
    border-color: #f5f5f7;
}

/* === Word Card Footer === */
.wc-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 12px 8px;
    border-top: 1px solid #333336;
}

.wc-speak-btns {
    display: flex;
    gap: 4px;
}

.wc-speak-us,
.wc-speak-uk {
    border: 1px solid #48484a;
    background: #1d1d1f;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    padding: 4px 10px;
    border-radius: 6px;
    color: #f5f5f7;
    transition: all 0.15s ease;
}

.wc-speak-us:hover,
.wc-speak-uk:hover {
    background: #f5f5f7;
    color: #1d1d1f;
}

/* === Word Card Nav === */
.wc-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.wc-prev,
.wc-next {
    width: 28px;
    height: 28px;
    border: 1px solid #48484a;
    background: #1d1d1f;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    color: #f5f5f7;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
}

.wc-prev:hover,
.wc-next:hover {
    background: #333336;
    border-color: #f5f5f7;
}

.wc-counter {
    font-size: 11px;
    color: #86868b;
    font-weight: 500;
    min-width: 32px;
    text-align: center;
}

/* === Word Card Writing Board === */
/* 写字板功能隐藏（保留代码；恢复时删除下面两条规则） */
.wc-board-btn { display: none; }
.word-card-panel .wc-board { display: none; }

.wc-board {
    border-top: 1px solid #333336;
    padding: 8px 16px 10px;
    user-select: none;
    -webkit-user-select: none;
    -webkit-touch-callout: none;
}

.wc-board-wrap {
    position: relative;
    height: 130px;
    background: #ffffff;
    border-radius: 8px;
    overflow: hidden;
}

.wc-board-guide {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 52px;
    font-weight: 700;
    color: rgba(0, 0, 0, 0.10);
    letter-spacing: 1px;
    pointer-events: none;
    user-select: none;
    -webkit-user-select: none;
    white-space: nowrap;
    overflow: hidden;
}

.wc-board-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    touch-action: none;
    cursor: crosshair;
    user-select: none;
    -webkit-user-select: none;
}

.wc-board-toolbar {
    display: flex;
    justify-content: flex-end;
    margin-top: 6px;
}

.wc-board-clear {
    border: 1px solid #48484a;
    background: #1d1d1f;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    padding: 4px 10px;
    border-radius: 6px;
    color: #f5f5f7;
    transition: all 0.15s ease;
}

.wc-board-clear:hover {
    background: #f5f5f7;
    color: #1d1d1f;
}

/* === Header Settings Left === */
.header-settings-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* === TOC Sidebar === */
.toc-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 300px;
    height: 100%;
    background: #1d1d1f;
    border-right: none;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.3);
    z-index: 2000;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    display: flex;
    flex-direction: column;
}

.toc-sidebar.open {
    transform: translateX(0);
}

.toc-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1999;
}

.toc-overlay.hidden {
    display: none;
}

.toc-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 16px 12px;
    border-bottom: 1px solid #333;
}

.toc-sidebar-title {
    font-size: 17px;
    font-weight: 600;
    color: #f5f5f7;
}

.toc-close-btn {
    width: 28px;
    height: 28px;
    border: none;
    background: #333;
    color: #86868b;
    border-radius: 50%;
    cursor: pointer;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
}

.toc-close-btn:hover {
    background: #444;
    color: #f5f5f7;
}

.toc-sidebar-items {
    flex: 1;
    overflow-y: auto;
    padding: 8px 0;
}

.toc-item {
    padding: 10px 16px;
    cursor: pointer;
    transition: background 0.1s ease;
    border-left: 3px solid transparent;
}

.toc-item:hover {
    background: #333;
}

.toc-item-active {
    background: #333;
    border-left-color: #f5f5f7;
}

.toc-item-done .toc-item-title::after {
    content: ' ✓';
    color: #30d158;
    font-weight: 600;
}

.toc-item-title {
    font-weight: 500;
    font-size: 14px;
    color: #f5f5f7;
    margin-bottom: 4px;
}


.toc-progress-text {
    font-size: 11px;
    color: #86868b;
}

/* === Word Info Panel (Legacy) === */
.word-info-panel {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 280px;
    background: #ffffff;
    border: 1px solid #d2d2d7;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    padding: 20px;
    z-index: 1000;
    animation: slideIn 0.2s ease;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.word-info-panel .panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid #d2d2d7;
}

.word-info-panel .panel-title {
    font-size: 15px;
    font-weight: 600;
    color: #1d1d1f;
}

.word-info-panel .panel-close {
    width: 24px;
    height: 24px;
    border: none;
    background: #f5f5f7;
    border-radius: 50%;
    cursor: pointer;
    font-size: 14px;
    color: #86868b;
    display: flex;
    align-items: center;
    justify-content: center;
}

.word-info-panel .panel-close:hover {
    background: #e8e8ed;
}

.word-info-panel .word-english {
    font-size: 22px;
    font-weight: 600;
    color: #1d1d1f;
    margin-bottom: 8px;
}

.word-info-panel .word-chinese {
    font-size: 16px;
    color: #1d1d1f;
    margin-bottom: 15px;
}

.word-phonetic {
    color: #86868b;
    font-size: 14px;
    font-style: italic;
}

.word-info-panel .word-details {
    font-size: 13px;
    color: #86868b;
    line-height: 1.8;
}

.word-info-panel .word-details div {
    margin-bottom: 5px;
}

.word-info-panel .word-details span {
    color: #1d1d1f;
    font-weight: 500;
}

/* === Progress Bar === */
.progress-bar {
    margin-top: 20px;
    padding: 15px;
    background: #f5f5f7;
    border-radius: 8px;
    display: flex;
    justify-content: space-around;
    font-size: 13px;
    color: #86868b;
}

/* === Homepage === */
.home-view {
    padding: 20px 0;
}

/* === 首页学习看板 === */
.home-theme-wrap {
    position: relative;
}

.home-theme-menu {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 110px;
    background: #ffffff;
    border: 1px solid #d2d2d7;
    border-radius: 10px;
    padding: 4px 0;
    z-index: 100;
}

.home-theme-menu.hidden {
    display: none;
}

.home-theme-option {
    display: block;
    width: 100%;
    text-align: left;
    padding: 8px 14px;
    font-size: 13px;
    border: none;
    background: transparent;
    color: #1d1d1f;
    cursor: pointer;
    transition: background 0.1s ease;
}

.home-theme-option:hover {
    background: #f5f5f7;
}

.home-theme-option.active {
    font-weight: 600;
}

[data-theme="dark"] .home-theme-menu {
    background: #2c2c2e;
    border-color: #48484a;
}

[data-theme="dark"] .home-theme-option {
    color: #f5f5f7;
}

[data-theme="dark"] .home-theme-option:hover {
    background: #3a3a3c;
}

[data-theme="eye"] .home-theme-menu {
    background: #d4e8cc;
    border-color: #a8d1a0;
}

[data-theme="paper"] .home-theme-menu {
    background: #F5E6D0;
    border-color: #C4B599;
}

.stats-board {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 16px;
}

.stat-card {
    background: #ffffff;
    border: 1px solid #d2d2d7;
    border-radius: 12px;
    padding: 14px 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    text-decoration: none;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

a.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.stat-num {
    font-size: 24px;
    font-weight: 600;
    color: #1d1d1f;
    line-height: 1.2;
}

.stat-label {
    font-size: 12px;
    font-weight: 500;
    color: #86868b;
}

[data-theme="dark"] .stat-card {
    background: #1c1c1e;
    border-color: #38383a;
}

[data-theme="dark"] .stat-num {
    color: #f5f5f7;
}

[data-theme="eye"] .stat-card {
    background: #d4ecd0;
    border-color: #a0c89a;
}

[data-theme="eye"] .stat-num {
    color: #2d3a2a;
}

[data-theme="paper"] .stat-card {
    background: #F5F1E8;
    border-color: #B8A88A;
}

[data-theme="paper"] .stat-num {
    color: #2C1810;
}

.home-hero {
    text-align: center;
    padding: 40px 0 30px;
}

.home-title {
    font-size: 28px;
    font-weight: 700;
    color: #1d1d1f;
    letter-spacing: -0.5px;
    margin-bottom: 8px;
}

.home-subtitle {
    font-size: 15px;
    color: #86868b;
}

.home-categories {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}

.home-category-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: #ffffff;
    border: 1px solid #d2d2d7;
    border-radius: 14px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.home-category-card:hover {
    background: #f5f5f7;
    border-color: #1d1d1f;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.category-card-icon {
    font-size: 32px;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f5f5f7;
    border-radius: 12px;
    flex-shrink: 0;
}

.category-card-info {
    flex: 1;
}

.category-card-title {
    font-size: 17px;
    font-weight: 600;
    color: #1d1d1f;
    margin-bottom: 4px;
}

.category-card-desc {
    font-size: 13px;
    color: #86868b;
}

.category-card-arrow {
    font-size: 24px;
    color: #c7c7cc;
    font-weight: 300;
}

.home-actions {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 24px;
}

.home-action-card {
    background: #ffffff;
    border: 1px solid #d2d2d7;
    border-radius: 14px;
    padding: 20px 16px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.home-action-card:hover {
    background: #f5f5f7;
    border-color: #1d1d1f;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.action-card-count {
    font-size: 24px;
    font-weight: 700;
    color: #1d1d1f;
    margin-bottom: 4px;
}

.action-card-label {
    font-size: 13px;
    color: #86868b;
    font-weight: 500;
}

.home-stats-bar {
    display: flex;
    justify-content: space-around;
    padding: 16px;
    background: #f5f5f7;
    border-radius: 12px;
}

.home-stat {
    text-align: center;
}

.home-stat-value {
    display: block;
    font-size: 20px;
    font-weight: 700;
    color: #1d1d1f;
    margin-bottom: 2px;
}

.home-stat-label {
    font-size: 12px;
    color: #86868b;
}

/* === Back Button === */
.home-back-btn,
.home-back-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    text-decoration: none;
}

.home-back-btn {
    padding: 6px 12px;
    border: none;
    background: transparent;
    color: #1d1d1f;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border-radius: 8px;
    transition: background 0.15s ease;
}

.home-back-btn:hover {
    background: #f5f5f7;
}

.story-list-header-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.story-list-header-row h2 {
    margin-bottom: 0;
}

/* === Responsive === */
@media (max-width: 768px) {
    .app {
        padding: 0 16px;
    }

    .header {
        flex-direction: column;
        gap: 12px;
        padding: 16px 0 12px;
    }

    .header-actions {
        flex-wrap: wrap;
        justify-content: center;
        gap: 6px;
    }

    .story-text {
        font-size: var(--text-size, 16px);
    }

    .story-title {
        font-size: 20px;
    }

    .blank-input {
        width: 100px;
    }

    .story-content {
        padding: 20px;
    }

    .word-card-fab {
        right: 16px;
        bottom: 80px;
        padding: 6px 12px;
        font-size: 12px;
    }

    .word-card-panel {
        right: 16px;
        bottom: 130px;
        width: min(346px, calc(100vw - 32px));
        background: #1d1d1f;
        border-color: #333336;
    }

    .wc-board-wrap {
        height: 110px;
    }

    .quiz-options {
        grid-template-columns: 1fr;
    }

    .toc-sidebar {
        width: 260px;
    }

    .home-hero {
        padding: 24px 0 20px;
    }

    .home-title {
        font-size: 24px;
    }

    .home-actions {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }

    .home-action-card {
        padding: 16px 12px;
    }

    .action-card-count {
        font-size: 20px;
    }
}

/* ========================================
   Dark Mode
   ======================================== */
[data-theme="dark"] body {
    background-color: #000000;
    color: #f5f5f7;
}

[data-theme="dark"] .header h1 {
    color: #f5f5f7;
}

[data-theme="dark"] .btn-secondary,
[data-theme="dark"] .btn-white,
[data-theme="dark"] .settings-dropdown-btn,
[data-theme="dark"] .level-dropdown-btn {
    background: #2c2c2e;
    border-color: #48484a;
    color: #f5f5f7;
}

[data-theme="dark"] .btn-secondary:hover,
[data-theme="dark"] .btn-white:hover,
[data-theme="dark"] .settings-dropdown-btn:hover,
[data-theme="dark"] .level-dropdown-btn:hover {
    background: #3a3a3c;
}

[data-theme="dark"] .btn-primary {
    background: #f5f5f7;
    color: #1d1d1f;
}

[data-theme="dark"] .btn-primary:hover {
    background: #e5e5ea;
}

[data-theme="dark"] .hint-control {
    background: #2c2c2e;
}

[data-theme="dark"] .hint-level-btn {
    color: #98989d;
}

[data-theme="dark"] .hint-level-btn:hover {
    color: #f5f5f7;
}

[data-theme="dark"] .hint-level-btn.active {
    background: #3a3a3c;
    color: #f5f5f7;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .settings-dropdown-menu {
    background: #2c2c2e;
    border-color: #48484a;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .settings-label {
    color: #98989d;
}

[data-theme="dark"] .level-dropdown-menu {
    background: #2c2c2e;
    border-color: #48484a;
}

[data-theme="dark"] .level-option {
    color: #f5f5f7;
}

[data-theme="dark"] .level-option:hover {
    background: #3a3a3c;
}

[data-theme="dark"] .level-caret,
[data-theme="dark"] .level-option .level-count {
    color: #98989d;
}

[data-theme="dark"] .wl-level-btn {
    background: #2c2c2e;
    border-color: #48484a;
    color: #f5f5f7;
}

[data-theme="dark"] .wl-level-btn:hover {
    background: #3a3a3c;
}

[data-theme="dark"] .wl-level-menu {
    background: #2c2c2e;
    border-color: #48484a;
}

[data-theme="dark"] .wl-level-option {
    color: #f5f5f7;
}

[data-theme="dark"] .wl-level-option:hover {
    background: #3a3a3c;
}

[data-theme="dark"] .wl-level-option .wl-level-count {
    color: #98989d;
}

[data-theme="dark"] .stats {
    color: #98989d;
}

[data-theme="dark"] .story-text {
    color: #f5f5f7;
}

[data-theme="dark"] .blank-input:hover,
[data-theme="dark"] .blank-input:focus {
    background: #3a3a3c;
}

[data-theme="dark"] .blank-input.revealed,
[data-theme="dark"] .reverse-input.revealed {
    background: #1c3a26;
    box-shadow: inset 0 -2px 0 #34a853;
}

[data-theme="dark"] .hint {
    color: #f5f5f7;
}

[data-theme="dark"] .revealed-word {
    color: #f5f5f7;
}

[data-theme="dark"] .reverse-label {
    color: #f5f5f7;
}

[data-theme="dark"] .blank-wrapper {
    background: #2c2c2e;
}

[data-theme="dark"] .blank-paren {
    color: #98989d;
}

[data-theme="dark"] .answer-overlay {
    background: #2c2c2e;
    color: #f5f5f7;
    border-color: #48484a;
}

[data-theme="dark"] .blank-wrapper.wc-active {
    background: #3a3a3c;
    box-shadow: 0 0 0 2px #f5f5f7;
}

[data-theme="dark"] .story-list {
    background: #1c1c1e;
    border-color: #38383a;
}

[data-theme="dark"] .story-list h2 {
    color: #f5f5f7;
}

[data-theme="dark"] .story-list .story-item {
    color: #f5f5f7;
}

[data-theme="dark"] .story-list .story-item:hover {
    background: #2c2c2e;
}

[data-theme="dark"] .modal-box {
    background: #2c2c2e;
}

[data-theme="dark"] .modal-msg {
    color: #f5f5f7;
}

[data-theme="dark"] .quiz-item {
    background: #1c1c1e;
    border-color: #38383a;
}

[data-theme="dark"] .quiz-question {
    color: #f5f5f7;
}

[data-theme="dark"] .quiz-option {
    background: #2c2c2e;
    border-color: #48484a;
    color: #f5f5f7;
}

[data-theme="dark"] .quiz-option:hover:not(:disabled) {
    background: #3a3a3c;
    border-color: #f5f5f7;
}

[data-theme="dark"] .quiz-option.quiz-correct {
    border-color: #30d158;
    background: #1c3a1c;
    color: #30d158;
}

[data-theme="dark"] .quiz-option.quiz-wrong {
    border-color: #ff453a;
    background: #3a1c1c;
    color: #ff453a;
}

[data-theme="dark"] .quiz-option:disabled {
    background: #2c2c2e;
    color: #98989d;
}

[data-theme="dark"] .wl-card {
    background: #1c1c1e;
    border-color: #38383a;
    color: #f5f5f7;
}

[data-theme="dark"] .wl-card-word {
    color: #f5f5f7;
}

[data-theme="dark"] .wl-card-input {
    background: #2c2c2e;
    border-color: #48484a;
    color: #f5f5f7;
}

[data-theme="dark"] .wl-card-input:focus {
    border-color: #0a84ff;
}

[data-theme="dark"] .wl-card-input.correct {
    border-color: #30d158;
    background: #1c3a1c;
}

[data-theme="dark"] .wl-card-input.incorrect {
    border-color: #ff453a;
    background: #3a1c1c;
}

[data-theme="dark"] .wl-card-phonetic {
    color: #98989d;
}

[data-theme="dark"] .wl-card-hint {
    color: #98989d;
}

[data-theme="dark"] .wl-ex-zh {
    color: #98989d;
}

[data-theme="dark"] .wl-ex-label {
    color: #98989d;
}

[data-theme="dark"] .wl-card-level {
    background: #3a3a3c;
    color: #98989d;
}

[data-theme="dark"] .wl-card-speak-us,
[data-theme="dark"] .wl-card-speak-uk {
    color: #98989d;
}

[data-theme="dark"] .wl-card-speak-us:hover,
[data-theme="dark"] .wl-card-speak-uk:hover {
    background: #3a3a3c;
    color: #f5f5f7;
}

[data-theme="dark"] .wl-card-mastered {
    background: #2c2c2e;
    border-color: #48484a;
    color: #f5f5f7;
}

[data-theme="dark"] .wl-card-mastered:hover {
    background: #3a3a3c;
}

[data-theme="dark"] .wl-card-mastered.active {
    background: #f5f5f7;
    color: #1c1c1e;
    border-color: #f5f5f7;
}

[data-theme="dark"] .wl-card-delete {
    background: #2c2c2e;
    border-color: #48484a;
    color: #ff453a;
}

[data-theme="dark"] .wl-card-delete:hover {
    background: #3a2323;
    border-color: #ff453a;
}

[data-theme="dark"] .wl-card-fav {
    color: #48484a;
}

[data-theme="dark"] .wl-card-fav:hover,
[data-theme="dark"] .wl-card-fav.active {
    color: #f5a623;
}

[data-theme="dark"] .mistake-meta {
    color: #98989d;
}

[data-theme="dark"] .srs-days {
    color: #f5f5f7;
}

[data-theme="dark"] .mistake-due {
    border-color: #f5f5f7;
}

[data-theme="dark"] .word-info-panel {
    background: #1c1c1e;
    border-color: #38383a;
    color: #f5f5f7;
}

[data-theme="dark"] .home-category-card {
    background: #1c1c1e;
    border-color: #38383a;
}

[data-theme="dark"] .home-category-card:hover {
    background: #2c2c2e;
    border-color: #48484a;
}

[data-theme="dark"] .category-card-icon {
    background: #2c2c2e;
}

[data-theme="dark"] .category-card-title {
    color: #f5f5f7;
}

[data-theme="dark"] .category-card-desc {
    color: #98989d;
}

[data-theme="dark"] .category-card-arrow {
    color: #636366;
}

[data-theme="dark"] .home-action-card {
    background: #1c1c1e;
    border-color: #38383a;
}

[data-theme="dark"] .home-action-card:hover {
    background: #2c2c2e;
    border-color: #48484a;
}

[data-theme="dark"] .action-card-count {
    color: #f5f5f7;
}

[data-theme="dark"] .action-card-label {
    color: #98989d;
}

[data-theme="dark"] .home-stats-bar {
    background: #2c2c2e;
}

[data-theme="dark"] .home-stat-value {
    color: #f5f5f7;
}

[data-theme="dark"] .home-stat-label {
    color: #98989d;
}

[data-theme="dark"] .home-title {
    color: #f5f5f7;
}

[data-theme="dark"] .home-subtitle {
    color: #98989d;
}

[data-theme="dark"] .home-back-link {
    color: #f5f5f7;
}

[data-theme="dark"] .reading-highlight {
    background: rgba(255, 214, 10, 0.2);
}

[data-theme="dark"] .story-toolbar {
    border-bottom-color: #38383a;
}

[data-theme="dark"] .header {
    border-bottom-color: #38383a;
}

[data-theme="dark"] .story-content {
    background: #1c1c1e;
    border-color: #38383a;
}

/* ========================================
   Eye Protection Mode (护眼模式)
   ======================================== */
[data-theme="eye"] body {
    background-color: #cde8c4;
    color: #2d3a2a;
}

[data-theme="eye"] .header h1 {
    color: #2d3a2a;
}

[data-theme="eye"] .btn-secondary,
[data-theme="eye"] .btn-white,
[data-theme="eye"] .settings-dropdown-btn,
[data-theme="eye"] .level-dropdown-btn {
    background: #b8ddb0;
    border-color: #a0c89a;
    color: #2d3a2a;
}

[data-theme="eye"] .btn-secondary:hover,
[data-theme="eye"] .btn-white:hover,
[data-theme="eye"] .settings-dropdown-btn:hover,
[data-theme="eye"] .level-dropdown-btn:hover {
    background: #a8d1a0;
}

[data-theme="eye"] .btn-primary {
    background: #5a8a52;
    color: #ffffff;
}

[data-theme="eye"] .btn-primary:hover {
    background: #4a7a42;
}

[data-theme="eye"] .hint-control {
    background: #b8ddb0;
}

[data-theme="eye"] .hint-level-btn {
    color: #6a9a62;
}

[data-theme="eye"] .hint-level-btn:hover {
    color: #2d3a2a;
}

[data-theme="eye"] .hint-level-btn.active {
    background: #ffffff;
    color: #2d3a2a;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

[data-theme="eye"] .settings-dropdown-menu {
    background: #b8ddb0;
    border-color: #a0c89a;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

[data-theme="eye"] .settings-label {
    color: #6a9a62;
}

[data-theme="eye"] .level-dropdown-menu {
    background: #b8ddb0;
    border-color: #a0c89a;
}

[data-theme="eye"] .level-option {
    color: #2d3a2a;
}

[data-theme="eye"] .level-option:hover {
    background: #a8d1a0;
}

[data-theme="eye"] .level-caret,
[data-theme="eye"] .level-option .level-count {
    color: #6a9a62;
}

[data-theme="eye"] .wl-level-btn {
    background: #d4e8cc;
    border-color: #a8d1a0;
    color: #2d3a2a;
}

[data-theme="eye"] .wl-level-btn:hover {
    background: #b8ddb0;
}

[data-theme="eye"] .wl-level-menu {
    background: #d4e8cc;
    border-color: #a8d1a0;
}

[data-theme="eye"] .wl-level-option {
    color: #2d3a2a;
}

[data-theme="eye"] .wl-level-option:hover {
    background: #a8d1a0;
}

[data-theme="eye"] .wl-level-option .wl-level-count {
    color: #6a9a62;
}

[data-theme="eye"] .stats {
    color: #6a9a62;
}

[data-theme="eye"] .story-text {
    color: #2d3a2a;
}

[data-theme="eye"] .blank-input {
    color: inherit;
}

[data-theme="eye"] .blank-input:hover,
[data-theme="eye"] .blank-input:focus {
    background: #b8ddb0;
}

[data-theme="eye"] .blank-input.revealed,
[data-theme="eye"] .reverse-input.revealed {
    background: #cfe9c6;
    box-shadow: inset 0 -2px 0 #3a7d34;
}

[data-theme="eye"] .hint {
    color: #2d3a2a;
}

[data-theme="eye"] .revealed-word {
    color: #2d3a2a;
}

[data-theme="eye"] .reverse-label {
    color: #2d3a2a;
}

[data-theme="eye"] .blank-wrapper {
    background: #b8ddb0;
}

[data-theme="eye"] .blank-paren {
    color: #6a9a62;
}

[data-theme="eye"] .answer-overlay {
    background: #b8ddb0;
    color: #2d3a2a;
    border-color: #a0c89a;
}

[data-theme="eye"] .blank-wrapper.wc-active {
    background: #a8d1a0;
    box-shadow: 0 0 0 2px #2d3a2a;
}

[data-theme="eye"] .story-content {
    background: #d4ecd0;
    border-color: #a0c89a;
}

[data-theme="eye"] .story-list {
    background: #d4ecd0;
    border-color: #a0c89a;
}

[data-theme="eye"] .story-list h2 {
    color: #2d3a2a;
}

[data-theme="eye"] .story-list .story-item {
    color: #2d3a2a;
}

[data-theme="eye"] .story-list .story-item:hover {
    background: #b8ddb0;
}

[data-theme="eye"] .modal-box {
    background: #d4ecd0;
}

[data-theme="eye"] .modal-msg {
    color: #2d3a2a;
}

[data-theme="eye"] .quiz-item {
    background: #d4ecd0;
    border-color: #a0c89a;
}

[data-theme="eye"] .quiz-question {
    color: #2d3a2a;
}

[data-theme="eye"] .quiz-option {
    background: #b8ddb0;
    border-color: #a0c89a;
    color: #2d3a2a;
}

[data-theme="eye"] .quiz-option:hover:not(:disabled) {
    background: #a8d1a0;
    border-color: #2d3a2a;
}

[data-theme="eye"] .quiz-option.quiz-correct {
    border-color: #2d6a1e;
    background: #2d6a1e;
    color: #ffffff;
}

[data-theme="eye"] .quiz-option.quiz-wrong {
    border-color: #c0392b;
    background: #f2d0d0;
    color: #c0392b;
}

[data-theme="eye"] .quiz-option:disabled {
    background: #b8ddb0;
    color: #6a9a62;
}

[data-theme="eye"] .wl-card {
    background: #d4ecd0;
    border-color: #a0c89a;
    color: #2d3a2a;
}

[data-theme="eye"] .wl-card-word {
    color: #2d3a2a;
}

[data-theme="eye"] .wl-card-input {
    background: #e8f5e4;
    border-color: #a0c89a;
    color: #2d3a2a;
}

[data-theme="eye"] .wl-card-input:focus {
    border-color: #4a9e42;
}

[data-theme="eye"] .wl-card-input.correct {
    border-color: #4a9e42;
    background: #d4ecd0;
}

[data-theme="eye"] .wl-card-input.incorrect {
    border-color: #d32f2f;
    background: #f5e0e0;
}

[data-theme="eye"] .wl-card-phonetic {
    color: #6a9a62;
}

[data-theme="eye"] .wl-card-hint {
    color: #4a6a44;
}

[data-theme="eye"] .wl-ex-zh {
    color: #4a6a44;
}

[data-theme="eye"] .wl-ex-label {
    color: #4a6a44;
}

[data-theme="eye"] .wl-card-level {
    background: #b8ddb0;
    color: #4a6a44;
}

[data-theme="eye"] .wl-card-speak-us,
[data-theme="eye"] .wl-card-speak-uk {
    color: #6a9a62;
}

[data-theme="eye"] .wl-card-speak-us:hover,
[data-theme="eye"] .wl-card-speak-uk:hover {
    background: #b8ddb0;
    color: #2d3a2a;
}

[data-theme="eye"] .wl-card-mastered {
    background: #e8f5e4;
    border-color: #a0c89a;
    color: #2d3a2a;
}

[data-theme="eye"] .wl-card-mastered:hover {
    background: #d4ecd0;
}

[data-theme="eye"] .wl-card-mastered.active {
    background: #2d3a2a;
    color: #d4ecd0;
}

[data-theme="eye"] .wl-card-fav {
    color: #a0c89a;
}

[data-theme="eye"] .wl-card-fav:hover,
[data-theme="eye"] .wl-card-fav.active {
    color: #f5a623;
}

[data-theme="eye"] .mistake-meta {
    color: #4a6a44;
}

[data-theme="eye"] .srs-days {
    color: #2d3a2a;
}

[data-theme="eye"] .mistake-due {
    border-color: #2d3a2a;
}

[data-theme="eye"] .word-info-panel {
    background: #d4ecd0;
    border-color: #a0c89a;
    color: #2d3a2a;
}

[data-theme="eye"] .home-category-card {
    background: #d4ecd0;
    border-color: #a0c89a;
}

[data-theme="eye"] .home-category-card:hover {
    background: #b8ddb0;
    border-color: #5a8a52;
}

[data-theme="eye"] .category-card-icon {
    background: #b8ddb0;
}

[data-theme="eye"] .category-card-title {
    color: #2d3a2a;
}

[data-theme="eye"] .category-card-desc {
    color: #6a9a62;
}

[data-theme="eye"] .category-card-arrow {
    color: #8ab882;
}

[data-theme="eye"] .home-action-card {
    background: #d4ecd0;
    border-color: #a0c89a;
}

[data-theme="eye"] .home-action-card:hover {
    background: #b8ddb0;
    border-color: #5a8a52;
}

[data-theme="eye"] .action-card-count {
    color: #2d3a2a;
}

[data-theme="eye"] .action-card-label {
    color: #6a9a62;
}

[data-theme="eye"] .home-stats-bar {
    background: #b8ddb0;
}

[data-theme="eye"] .home-stat-value {
    color: #2d3a2a;
}

[data-theme="eye"] .home-stat-label {
    color: #6a9a62;
}

[data-theme="eye"] .home-title {
    color: #2d3a2a;
}

[data-theme="eye"] .home-subtitle {
    color: #6a9a62;
}

[data-theme="eye"] .home-back-link {
    color: #2d3a2a;
}

[data-theme="eye"] .story-toolbar {
    border-bottom-color: #a0c89a;
}

[data-theme="eye"] .header {
    border-bottom-color: #a0c89a;
}

[data-theme="eye"] .reading-highlight {
    background: rgba(90, 138, 82, 0.25);
}

/* ========================================
   Paper Book Mode (纸书模式)
   ======================================== */
[data-theme="paper"] body {
    background-color: #F5F1E8;
    color: #2C1810;
}

[data-theme="paper"] .header h1 {
    color: #2C1810;
}

[data-theme="paper"] .btn-secondary,
[data-theme="paper"] .btn-white,
[data-theme="paper"] .settings-dropdown-btn,
[data-theme="paper"] .level-dropdown-btn {
    background: #D4C5A9;
    border-color: #C4B599;
    color: #2C1810;
}

[data-theme="paper"] .btn-secondary:hover,
[data-theme="paper"] .btn-white:hover,
[data-theme="paper"] .settings-dropdown-btn:hover,
[data-theme="paper"] .level-dropdown-btn:hover {
    background: #C4B599;
}

[data-theme="paper"] .btn-primary {
    background: #8B7355;
    color: #F5F1E8;
}

[data-theme="paper"] .btn-primary:hover {
    background: #6B5340;
}

[data-theme="paper"] .hint-control {
    background: #D4C5A9;
}

[data-theme="paper"] .hint-level-btn {
    color: #8B7355;
}

[data-theme="paper"] .hint-level-btn:hover {
    color: #2C1810;
}

[data-theme="paper"] .hint-level-btn.active {
    background: #F5F1E8;
    color: #2C1810;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

[data-theme="paper"] .settings-dropdown-menu {
    background: #D4C5A9;
    border-color: #C4B599;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

[data-theme="paper"] .settings-label {
    color: #8B7355;
}

[data-theme="paper"] .level-dropdown-menu {
    background: #D4C5A9;
    border-color: #C4B599;
}

[data-theme="paper"] .level-option {
    color: #2C1810;
}

[data-theme="paper"] .level-option:hover {
    background: #C4B599;
}

[data-theme="paper"] .level-caret,
[data-theme="paper"] .level-option .level-count {
    color: #8B7355;
}

[data-theme="paper"] .wl-level-btn {
    background: #F5E6D0;
    border-color: #C4B599;
    color: #2C1810;
}

[data-theme="paper"] .wl-level-btn:hover {
    background: #C4B599;
}

[data-theme="paper"] .wl-level-menu {
    background: #F5E6D0;
    border-color: #C4B599;
}

[data-theme="paper"] .wl-level-option {
    color: #2C1810;
}

[data-theme="paper"] .wl-level-option:hover {
    background: #C4B599;
}

[data-theme="paper"] .wl-level-option .wl-level-count {
    color: #8B7355;
}

[data-theme="paper"] .stats {
    color: #8B7355;
}

[data-theme="paper"] .story-text {
    color: #2C1810;
}

[data-theme="paper"] .blank-input {
    color: inherit;
}

[data-theme="paper"] .blank-input:hover,
[data-theme="paper"] .blank-input:focus {
    background: #D4C5A9;
}

[data-theme="paper"] .blank-input.revealed,
[data-theme="paper"] .reverse-input.revealed {
    background: #E4EFD2;
    box-shadow: inset 0 -2px 0 #5a7d3a;
}

[data-theme="paper"] .hint {
    color: #2C1810;
}

[data-theme="paper"] .revealed-word {
    color: #2C1810;
}

[data-theme="paper"] .reverse-label {
    color: #2C1810;
}

[data-theme="paper"] .blank-wrapper {
    background: #D4C5A9;
}

[data-theme="paper"] .blank-paren {
    color: #8B7355;
}

[data-theme="paper"] .answer-overlay {
    background: #D4C5A9;
    color: #2C1810;
    border-color: #C4B599;
}

[data-theme="paper"] .blank-wrapper.wc-active {
    background: #C4B599;
    box-shadow: 0 0 0 2px #2C1810;
}

[data-theme="paper"] .story-content {
    background: #F5F1E8;
    border-color: #B8A88A;
}

[data-theme="paper"] .story-list {
    background: #F5F1E8;
    border-color: #B8A88A;
}

[data-theme="paper"] .story-list h2 {
    color: #2C1810;
}

[data-theme="paper"] .story-list .story-item {
    color: #2C1810;
}

[data-theme="paper"] .story-list .story-item:hover {
    background: #D4C5A9;
}

[data-theme="paper"] .modal-box {
    background: #F5F1E8;
}

[data-theme="paper"] .modal-msg {
    color: #2C1810;
}

[data-theme="paper"] .quiz-item {
    background: #F5F1E8;
    border-color: #B8A88A;
}

[data-theme="paper"] .quiz-question {
    color: #2C1810;
}

[data-theme="paper"] .quiz-option {
    background: #D4C5A9;
    border-color: #C4B599;
    color: #2C1810;
}

[data-theme="paper"] .quiz-option:hover:not(:disabled) {
    background: #C4B599;
    border-color: #2C1810;
}

[data-theme="paper"] .quiz-option.quiz-correct {
    border-color: #4A7C59;
    background: #4A7C59;
    color: #F5F1E8;
}

[data-theme="paper"] .quiz-option.quiz-wrong {
    border-color: #A63D40;
    background: #F2D0D0;
    color: #A63D40;
}

[data-theme="paper"] .quiz-option:disabled {
    background: #D4C5A9;
    color: #8B7355;
}

[data-theme="paper"] .wl-card {
    background: #F5F1E8;
    border-color: #B8A88A;
    color: #2C1810;
}

[data-theme="paper"] .wl-card-word {
    color: #2C1810;
}

[data-theme="paper"] .wl-card-input {
    background: #F5F1E8;
    border-color: #B8A88A;
    color: #2C1810;
}

[data-theme="paper"] .wl-card-input:focus {
    border-color: #8B6914;
}

[data-theme="paper"] .wl-card-input.correct {
    border-color: #4a9e42;
    background: #e8f5e4;
}

[data-theme="paper"] .wl-card-input.incorrect {
    border-color: #d32f2f;
    background: #f5e0e0;
}

[data-theme="paper"] .wl-card-phonetic {
    color: #8B7355;
}

[data-theme="paper"] .wl-card-hint {
    color: #6B5340;
}

[data-theme="paper"] .wl-ex-zh {
    color: #6B5340;
}

[data-theme="paper"] .wl-ex-label {
    color: #6B5340;
}

[data-theme="paper"] .wl-card-level {
    background: #D4C5A9;
    color: #6B5340;
}

[data-theme="paper"] .wl-card-speak-us,
[data-theme="paper"] .wl-card-speak-uk {
    color: #8B7355;
}

[data-theme="paper"] .wl-card-speak-us:hover,
[data-theme="paper"] .wl-card-speak-uk:hover {
    background: #D4C5A9;
    color: #2C1810;
}

[data-theme="paper"] .wl-card-mastered {
    background: #F5F1E8;
    border-color: #B8A88A;
    color: #2C1810;
}

[data-theme="paper"] .wl-card-mastered:hover {
    background: #D4C5A9;
}

[data-theme="paper"] .wl-card-mastered.active {
    background: #2C1810;
    color: #F5F1E8;
}

[data-theme="paper"] .wl-card-fav {
    color: #B8A88A;
}

[data-theme="paper"] .wl-card-fav:hover,
[data-theme="paper"] .wl-card-fav.active {
    color: #f5a623;
}

[data-theme="paper"] .mistake-meta {
    color: #6B5340;
}

[data-theme="paper"] .srs-days {
    color: #2C1810;
}

[data-theme="paper"] .mistake-due {
    border-color: #2C1810;
}

[data-theme="paper"] .word-info-panel {
    background: #F5F1E8;
    border-color: #B8A88A;
    color: #2C1810;
}

[data-theme="paper"] .home-category-card {
    background: #F5F1E8;
    border-color: #B8A88A;
}

[data-theme="paper"] .home-category-card:hover {
    background: #D4C5A9;
    border-color: #8B7355;
}

[data-theme="paper"] .category-card-icon {
    background: #D4C5A9;
}

[data-theme="paper"] .category-card-title {
    color: #2C1810;
}

[data-theme="paper"] .category-card-desc {
    color: #8B7355;
}

[data-theme="paper"] .category-card-arrow {
    color: #A89880;
}

[data-theme="paper"] .home-action-card {
    background: #F5F1E8;
    border-color: #B8A88A;
}

[data-theme="paper"] .home-action-card:hover {
    background: #D4C5A9;
    border-color: #8B7355;
}

[data-theme="paper"] .action-card-count {
    color: #2C1810;
}

[data-theme="paper"] .action-card-label {
    color: #8B7355;
}

[data-theme="paper"] .home-stats-bar {
    background: #D4C5A9;
}

[data-theme="paper"] .home-stat-value {
    color: #2C1810;
}

[data-theme="paper"] .home-stat-label {
    color: #8B7355;
}

[data-theme="paper"] .home-title {
    color: #2C1810;
}

[data-theme="paper"] .home-subtitle {
    color: #8B7355;
}

[data-theme="paper"] .home-back-link {
    color: #2C1810;
}

[data-theme="paper"] .story-toolbar {
    border-bottom-color: #B8A88A;
}

[data-theme="paper"] .header {
    border-bottom-color: #B8A88A;
}

[data-theme="paper"] .reading-highlight {
    background: rgba(139, 115, 85, 0.25);
}

/* ========================================
   首页 · 小说站样式（双tab + 卡片网格）
   ======================================== */

.header-brand {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.header-tagline {
    font-size: 12px;
    color: #86868b;
    margin-top: 2px;
    letter-spacing: 0.1px;
}

.header-icons {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.header-icon-btn {
    position: relative;
    width: 38px;
    height: 38px;
    border-radius: 12px;
    border: 1px solid #d2d2d7;
    background: #ffffff;
    font-size: 17px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.15s ease, transform 0.1s ease;
    -webkit-tap-highlight-color: transparent;
}

.header-icon-btn:hover {
    background: #f5f5f7;
}

.header-icon-btn:active {
    transform: scale(0.94);
}

.header-icon-emoji svg {
    width: 18px;
    height: 18px;
    display: block;
}

.header-icon-badge {
    position: absolute;
    top: -6px;
    right: -6px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    border-radius: 9px;
    background: #ff3b30;
    color: #ffffff;
    font-size: 11px;
    font-weight: 600;
    line-height: 18px;
    text-align: center;
    box-sizing: border-box;
}

/* --- Tab 栏 --- */
.novel-tabs {
    display: flex;
    gap: 28px;
    padding: 4px 4px 0;
    border-bottom: 1px solid #d2d2d7;
    margin-top: 6px;
}

.novel-tab {
    position: relative;
    background: none;
    border: none;
    padding: 10px 2px 12px;
    font-size: 16px;
    font-weight: 600;
    font-family: inherit;
    color: #86868b;
    cursor: pointer;
    letter-spacing: -0.2px;
    transition: color 0.15s ease;
    -webkit-tap-highlight-color: transparent;
}

.novel-tab.active {
    color: #1d1d1f;
}

.novel-tab::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    height: 3px;
    border-radius: 3px 3px 0 0;
    background: transparent;
    transition: background 0.15s ease;
}

.novel-tab[data-tab="v6"].active::after {
    background: linear-gradient(90deg, #7c3aed, #f59e0b);
}

.novel-tab[data-tab="v7"].active::after {
    background: linear-gradient(90deg, #e11d48, #fb7185);
}

/* --- 卡片网格 --- */
.novel-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 18px 14px;
    padding: 16px 4px 36px;
}

.novel-loading {
    grid-column: 1 / -1;
    text-align: center;
    color: #86868b;
    font-size: 14px;
    padding: 40px 0;
}

.novel-card {
    cursor: pointer;
    min-width: 0;
    -webkit-tap-highlight-color: transparent;
}

.novel-card:active .novel-cover {
    transform: scale(0.97);
}

.novel-cover {
    position: relative;
    aspect-ratio: 3 / 4;
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
    transition: transform 0.12s ease;
    background: #f5f5f7;
}

.novel-cover-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 46px;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.92);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.28);
    user-select: none;
}

.novel-grid[data-cat="v6"] .novel-cover-placeholder {
    background: linear-gradient(135deg, #4c1d95 0%, #7c3aed 45%, #f59e0b 130%);
}

.novel-grid[data-cat="v7"] .novel-cover-placeholder {
    background: linear-gradient(135deg, #881337 0%, #e11d48 45%, #fb7185 130%);
}

.novel-cover-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.novel-title {
    margin-top: 9px;
    font-size: 14px;
    font-weight: 600;
    color: #1d1d1f;
    letter-spacing: -0.2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.novel-summary {
    margin-top: 4px;
    font-size: 12px;
    line-height: 1.55;
    color: #6e6e73;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* --- 响应式 --- */
@media (min-width: 600px) {
    .novel-grid {
        grid-template-columns: repeat(auto-fill, minmax(158px, 1fr));
        gap: 22px 18px;
    }

    .novel-title {
        font-size: 15px;
    }

    .novel-summary {
        font-size: 13px;
    }
}

@media (max-width: 380px) {
    .novel-grid {
        grid-template-columns: repeat(auto-fill, minmax(124px, 1fr));
        gap: 16px 12px;
    }

    .novel-cover-placeholder {
        font-size: 38px;
    }
}

/* --- 暗色主题 --- */
[data-theme="dark"] .header-tagline {
    color: #98989d;
}

[data-theme="dark"] .header-icon-btn {
    border-color: #424245;
    background: #1c1c1e;
}

[data-theme="dark"] .header-icon-btn:hover {
    background: #2c2c2e;
}

[data-theme="dark"] .novel-tabs {
    border-bottom-color: #424245;
}

[data-theme="dark"] .novel-tab {
    color: #98989d;
}

[data-theme="dark"] .novel-tab.active {
    color: #f5f5f7;
}

[data-theme="dark"] .novel-cover {
    background: #1c1c1e;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.45);
}

[data-theme="dark"] .novel-title {
    color: #f5f5f7;
}

[data-theme="dark"] .novel-summary {
    color: #98989d;
}

[data-theme="dark"] .novel-loading {
    color: #98989d;
}

/* --- 纸质主题 --- */
[data-theme="paper"] .novel-tabs {
    border-bottom-color: #B8A88A;
}

[data-theme="paper"] .novel-tab.active {
    color: #2C1810;
}

[data-theme="paper"] .novel-tab {
    color: #8B7355;
}

[data-theme="paper"] .novel-title {
    color: #2C1810;
}

[data-theme="paper"] .novel-summary {
    color: #8B7355;
}

/* ===== 登录/注册 ===== */
.auth-tabs {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 16px;
}
.auth-tabs.hidden {
    display: none;
}

.auth-tab {
    flex: 1;
    padding: 8px 0;
    border: none;
    background: #f2f2f7;
    border-radius: 8px;
    font-size: 14px;
    color: #6e6e73;
    cursor: pointer;
}

.auth-tab.active {
    background: #6c5ce7;
    color: #fff;
}

.auth-panel {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.auth-panel.hidden {
    display: none;
}

.auth-input {
    width: 100%;
    box-sizing: border-box;
    padding: 10px 12px;
    border: 1px solid #d2d2d7;
    border-radius: 8px;
    font-size: 16px;
    background: #fff;
    color: #1d1d1f;
}

.auth-input:focus {
    outline: none;
    border-color: #6c5ce7;
}

.auth-error {
    color: #ff3b30;
    font-size: 13px;
    text-align: center;
    min-height: 16px;
}

.auth-error.hidden {
    display: none;
}

.auth-submit {
    display: block;
    width: 100%;
    padding: 10px 0;
    font-size: 15px;
}

.auth-username {
    text-align: center;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.auth-close-btn {
    opacity: 0.7;
}

.header-icon-avatar {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #6c5ce7;
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-style: normal;
}

[data-theme="dark"] .auth-input {
    background: #1c1c1e;
    border-color: #3a3a3c;
    color: #f5f5f7;
}

[data-theme="dark"] .auth-tab {
    background: #2c2c2e;
    color: #98989d;
}

[data-theme="eye"] .auth-input {
    background: #fdf8ee;
    border-color: #d9cdb4;
    color: #3e3226;
}

.stats.hidden,
.word-card-fab.hidden {
    display: none;
}

/* === Word Card Example Bilingual === */
.wc-example-row {
    display: flex;
    align-items: flex-start;
    gap: 6px;
}

.wc-example-en {
    flex: 1;
}

.wc-example-zh {
    font-style: normal;
    color: #6e6e73;
    margin-top: 2px;
}

.wc-example-speak {
    flex: none;
    border: none;
    background: transparent;
    color: #86868b;
    font-size: 13px;
    line-height: 1.5;
    cursor: pointer;
    padding: 0 2px;
}

.wc-example-speak svg {
    vertical-align: -2px;
}

.wc-example-speak.hidden {
    display: none;
}

.wc-example-speak.active {
    color: #0071e3;
}