/* ========== CSS 变量定义 (默认主题: 深色) ========== */
:root {
    --green: #27ae60;
    --red: #eb4d4b;
    --dark-blue: #34495e;
    --icon-gray: #95a5a6;
    --icon-active: #3498db;
    --bg-color: #1a1a1a;
    --text-color: #e0e0e0;
    --input-border: #444;
    --card-bg: #2d2d2d;
}

/* 亮色主题 */
[data-theme="light"] {
    --bg-color: #ffffff;
    --text-color: #333333;
    --dark-blue: #34495e;
    --input-border: #34495e;
    --card-bg: #f0f2f5;
    --icon-gray: #95a5a6;
}

/* ========== 基础布局 ========== */
body {
    background: var(--bg-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 50px;
    font-family: "PingFang SC", sans-serif;
    transition: background 0.3s, color 0.3s;
    margin: 0;
    min-height: 100vh;
}

/* ========== 顶部控制区 ========== */
.header-controls {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    gap: 10px;
    align-items: center;
}

/* 主题选择器 */
.theme-selector {
    padding: 6px 12px;
    font-size: 14px;
    border: 1px solid var(--input-border);
    border-radius: 6px;
    background: var(--card-bg);
    color: var(--text-color);
    cursor: pointer;
    outline: none;
}

.theme-selector:hover {
    border-color: var(--icon-active);
}

.theme-selector:focus {
    border-color: var(--icon-active);
    box-shadow: 0 0 0 2px rgba(39, 174, 96, 0.2);
}

/* 取消切换用户按钮 */
.cancel-switch-btn {
    width: 100%;
    padding: 10px;
    font-size: 14px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    color: #fff;
    background: #7f8c8d;
    transition: background 0.2s;
}

.cancel-switch-btn:hover {
    background: #95a5a6;
}

.user-display {
    position: absolute;
    top: 20px;
    left: 20px;
    font-size: 14px;
    color: var(--icon-active);
    display: flex;
    align-items: center;
    gap: 10px;
}

.switch-user-btn {
    font-size: 12px;
    padding: 3px 8px;
    background: var(--card-bg);
    border: 1px solid var(--input-border);
    border-radius: 4px;
    cursor: pointer;
    color: var(--text-color);
}

.switch-user-btn:hover {
    border-color: var(--icon-active);
}

/* ========== 工具栏 ========== */
.toolbar {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.btn-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

/* 模式指示器 */
.mode-indicator {
    font-size: 14px;
    font-weight: bold;
    padding: 5px 15px;
    border-radius: 20px;
    background: var(--card-bg);
    color: #7f8c8d;
}

.active-mode {
    background: #27ae6033;
    color: var(--green);
    border: 1px solid var(--green);
}

/* 主题切换按钮和设置按钮 */
.theme-toggle,
.settings-btn {
    padding: 5px 12px;
    cursor: pointer;
    background: var(--card-bg);
    border: 1px solid var(--icon-gray);
    border-radius: 4px;
    color: var(--text-color);
    font-size: 13px;
}

/* 文件标签按钮 */
.file-label {
    padding: 8px 15px;
    background: #34495e;
    color: white;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

.dict-label {
    padding: 8px 15px;
    background: #8e44ad;
    color: white;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

.file-label.disabled {
    opacity: 0.5;
    pointer-events: none;
}

/* 同步按钮 */
.sync-btn {
    padding: 8px 15px;
    background: #2980b9;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

.sync-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 删除按钮 */
.del-btn {
    padding: 8px 15px;
    background: #c0392b;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

.del-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* ========== 核心展示区 ========== */
#target-display {
    font-size: 52px;
    color: var(--green);
    margin-bottom: 20px;
    visibility: hidden;
    letter-spacing: 2px;
    font-weight: bold;
    height: 60px;
}

.input-wrapper {
    position: relative;
    width: 600px;
    height: 80px;
    border-bottom: 2px solid var(--input-border);
}

.pixel-font {
    font-family: 'Consolas', 'Monaco', monospace;
    font-weight: bold;
    font-size: 44px;
    letter-spacing: 8px;
    text-align: center;
    width: 100%;
    position: absolute;
    bottom: 10px;
    left: 0;
    white-space: pre;
    text-transform: lowercase;
}

input {
    background: transparent;
    border: none;
    outline: none;
    z-index: 2;
    color: var(--text-color);
    width: 100%;
}

#result-overlay {
    z-index: 1;
    pointer-events: none;
    display: none;
}

/* 正误标记 */
.correct {
    color: var(--green);
}

.wrong {
    color: var(--red);
}

.gap {
    color: var(--red);
    opacity: 0.5;
}

/* ========== 底部信息区 ========== */
.footer-info {
    margin-top: 30px;
    text-align: center;
}

.combo-info {
    font-size: 18px;
    color: var(--green);
    margin-bottom: 10px;
    font-weight: bold;
}

.translation {
    font-size: 18px;
    color: var(--text-color);
    min-height: 30px;
    visibility: hidden;
    padding: 10px 20px;
    opacity: 0.9;
    max-width: 600px;
    line-height: 1.8;
}

.translation .phonetic {
    text-align: center;
    font-size: 20px;
    color: var(--icon-active);
    margin-bottom: 8px;
}

.translation .definitions {
    text-align: left;
}

.translation .def-line {
    padding-left: 2.5em;
    text-indent: -2.5em;
    margin-bottom: 4px;
}

/* 音频按钮 */
.audio-btn {
    margin-top: 20px;
    cursor: pointer;
    color: var(--icon-gray);
    display: inline-block;
    vertical-align: middle;
}

.audio-btn svg {
    width: 40px;
    height: 40px;
    fill: currentColor;
}

/* ========== 语音选择器 ========== */
.voice-selector {
    margin-bottom: 10px;
    font-size: 12px;
    display: flex;
    gap: 15px;
    justify-content: center;
}

.voice-opt {
    cursor: pointer;
    color: var(--icon-gray);
    padding: 2px 8px;
    border: 1px solid transparent;
}

.voice-opt.active {
    color: var(--icon-active);
    border-bottom: 1px solid var(--icon-active);
    font-weight: bold;
}

/* ========== 定时器组 ========== */
.timer-group {
    margin-top: 15px;
    display: flex;
    gap: 10px;
    justify-content: center;
    align-items: center;
}

.timer-btn {
    font-size: 12px;
    color: #7f8c8d;
    cursor: pointer;
    background: var(--card-bg);
    padding: 3px 8px;
    border-radius: 4px;
    border: 1px solid transparent;
}

.timer-btn:hover {
    border-color: var(--icon-gray);
}

.timer-display {
    font-family: monospace;
    font-size: 14px;
    color: var(--red);
    font-weight: bold;
    min-width: 60px;
}

.timer-pause-btn {
    font-size: 12px;
    color: #fff;
    cursor: pointer;
    background: #e67e22;
    padding: 3px 10px;
    border-radius: 4px;
    border: none;
    margin-left: 5px;
}

.timer-pause-btn:hover {
    background: #d35400;
}

.timer-pause-btn.paused {
    background: var(--green);
}

/* 同步状态 */
.sync-status {
    font-size: 12px;
    color: #888;
    margin-top: 15px;
}

/* ========== 词库选择面板 ========== */
.vocab-panel {
    position: fixed;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
}

.vocab-toggle {
    background: var(--card-bg);
    border: 1px solid var(--input-border);
    border-radius: 8px;
    padding: 10px 14px;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s;
}

.vocab-toggle:hover {
    border-color: var(--icon-active);
}

.vocab-toggle .arrow {
    transition: transform 0.3s;
}

.vocab-panel.open .vocab-toggle .arrow {
    transform: rotate(180deg);
}

.vocab-dropdown {
    position: absolute;
    left: 0;
    top: calc(100% + 8px);
    background: var(--card-bg);
    border: 1px solid var(--input-border);
    border-radius: 12px;
    padding: 12px;
    width: 240px;
    max-height: 50vh;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.vocab-panel.open .vocab-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.vocab-list {
    max-height: calc(50vh - 40px);
    overflow-y: auto;
}

.vocab-item {
    padding: 10px 12px;
    margin: 4px 0;
    background: var(--bg-color);
    border: 1px solid var(--input-border);
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    transition: all 0.2s;
    word-break: break-all;
}

.vocab-item:hover {
    border-color: var(--icon-active);
    background: rgba(52, 152, 219, 0.1);
}

.vocab-item.selected {
    border-color: var(--green);
    background: rgba(39, 174, 96, 0.15);
    color: var(--green);
}

.vocab-item.loading {
    opacity: 0.6;
    pointer-events: none;
}

.vocab-loading {
    text-align: center;
    color: var(--icon-gray);
    padding: 20px;
    font-size: 12px;
}

.vocab-error {
    text-align: center;
    color: var(--red);
    padding: 10px;
    font-size: 12px;
}

/* ========== 登录模态框 ========== */
.login-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.login-box {
    background: var(--card-bg);
    border: 1px solid var(--input-border);
    border-radius: 16px;
    padding: 40px;
    width: 320px;
    text-align: center;
}

.login-box h2 {
    margin: 0 0 30px 0;
    font-size: 24px;
}

.login-box select {
    width: 100%;
    padding: 12px;
    font-size: 16px;
    border-radius: 8px;
    border: 1px solid var(--input-border);
    background: var(--bg-color);
    color: var(--text-color);
    margin-bottom: 20px;
}

.login-box .timer-options {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    justify-content: center;
}

.login-box .timer-opt {
    padding: 10px 20px;
    background: var(--bg-color);
    border: 2px solid var(--input-border);
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s;
}

.login-box .timer-opt:hover {
    border-color: var(--icon-active);
}

.login-box .timer-opt.selected {
    border-color: var(--green);
    background: rgba(39, 174, 96, 0.15);
    color: var(--green);
}

.login-box button {
    width: 100%;
    padding: 12px;
    font-size: 16px;
    background: var(--icon-active);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

.login-box button:hover {
    opacity: 0.9;
}

.login-box button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 登录输入框统一样式 */
.login-input {
    width: 100%;
    box-sizing: border-box;
    padding: 12px 15px;
    margin-bottom: 15px;
    border: 2px solid var(--input-border);
    border-radius: 8px;
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 15px;
    outline: none;
    transition: all 0.2s;
}

.login-input:focus {
    border-color: var(--icon-active);
    background: var(--card-bg);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

.login-input::placeholder {
    color: var(--icon-gray);
    opacity: 0.7;
}

/* ========== 设置模态框 ========== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.modal-box {
    background: var(--card-bg);
    border: 1px solid var(--input-border);
    border-radius: 12px;
    padding: 25px;
    width: 420px;
    max-width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-box h2 {
    margin-top: 0;
    font-size: 18px;
    border-bottom: 1px solid var(--input-border);
    padding-bottom: 10px;
}

.form-row {
    margin-bottom: 15px;
}

.form-row label {
    display: block;
    font-size: 12px;
    color: var(--icon-gray);
    margin-bottom: 5px;
}

.form-row input {
    width: 100%;
    box-sizing: border-box;
    padding: 8px 10px;
    background: var(--bg-color);
    border: 1px solid var(--input-border);
    border-radius: 4px;
    color: var(--text-color);
    font-family: monospace;
    font-size: 13px;
}

.form-row input:focus {
    border-color: var(--icon-active);
    outline: none;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid var(--input-border);
}

.modal-btn {
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 13px;
    border: none;
}

.modal-btn.cancel {
    background: var(--card-bg);
    border: 1px solid var(--icon-gray);
    color: var(--text-color);
}

.modal-btn.save {
    background: var(--icon-active);
    color: white;
}

/* ========== 工具类 ========== */
.hide-cursor,
.hide-cursor * {
    cursor: none !important;
}