:root {
    /* 默认主题 */
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --text-color: #0f0f0f;
    --text-secondary: #525252;
    --text-muted: #737373;
    --border-color: #d4d4d4;
    --border-light: #e5e5e5;
    --border-hover: #b5b5b5;
    --bg-hover: #f1f1f1;
    --bg-subtle: #fafafa;
    --accent-color: #007bff;
    --accent-hover: #0056b3;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --shadow-light: rgba(0, 0, 0, 0.04);
    --shadow-medium: rgba(0, 0, 0, 0.08);
    --shadow-strong: rgba(0, 0, 0, 0.12);
}

/* Notion护眼主题 */
[data-theme="notion"] {
    --bg-color: #fbfbfa;
    --card-bg: #ffffff;
    --text-color: #37352f;
    --text-secondary: #787774;
    --border-color: #e9e9e7;
    --border-light: #f1f1ef;
    --accent-color: #2383e2;
    --accent-hover: #1a73d0;
}

/* GitHub浅色主题 */
[data-theme="github"] {
    --bg-color: #f6f8fa;
    --card-bg: #ffffff;
    --text-color: #24292f;
    --text-secondary: #656d76;
    --border-color: #d1d9e0;
    --border-light: #f6f8fa;
    --accent-color: #0969da;
    --accent-hover: #0550ae;
}

/* Solarized护眼主题 */
[data-theme="solarized"] {
    --bg-color: #fdf6e3;
    --card-bg: #eee8d5;
    --text-color: #586e75;
    --text-secondary: #93a1a1;
    --border-color: #d3cbb7;
    --border-light: #f7f1e8;
    --accent-color: #268bd2;
    --accent-hover: #1e6ba8;
}

/* Material淡紫主题 */
[data-theme="material"] {
    --bg-color: #fefbff;
    --card-bg: #ffffff;
    --text-color: #1c1b1f;
    --text-secondary: #49454f;
    --border-color: #e7e0ec;
    --border-light: #f7f2fa;
    --accent-color: #6750a4;
    --accent-hover: #5a4593;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.app {
    width: 100%;
    max-width: 1200px;
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 4px 20px var(--shadow-medium);
    overflow: hidden;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.language-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 12px 20px;
    background: var(--border-light);
    border-bottom: 1px solid var(--border-color);
    height: 48px;
    transition: background-color 0.3s ease, border-color 0.3s ease;
    position: relative;
}

.language-selector {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.control-right {
    display: flex;
    align-items: center;
    gap: 12px;
    justify-self: end;
}

.model-info {
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.model-selector {
    display: flex;
    align-items: center;
}

.model-select {
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    padding: 6px 12px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 160px;
    height: 32px;
}

.model-select:hover {
    background: var(--bg-hover);
    border-color: var(--border-color);
    color: var(--text-color);
}

.model-select:focus {
    outline: none;
    border-color: var(--accent-color);
    background: var(--card-bg);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.settings-btn {
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    padding: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
}

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

.lang-select {
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    padding: 8px 12px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 130px;
    height: 36px;
}

.lang-select:hover {
    background: var(--bg-hover);
}

.lang-select:focus {
    outline: none;
    background: var(--card-bg);
    border-color: var(--border-color);
    box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.05);
}

.swap-btn {
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-secondary);
}

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

.translation-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 500px;
}

.input-panel {
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.output-panel {
    display: flex;
    flex-direction: column;
}

.text-container {
    position: relative;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.input-wrapper {
    display: flex;
    gap: 8px;
    flex: 1;
}

.text-area {
    flex: 1;
    padding: 20px 0 50px 20px;
    border: none;
    outline: none;
    resize: none;
    font-family: inherit;
    font-size: 16px;
    line-height: 1.6;
    background: var(--card-bg);
    color: var(--text-color);
    overflow-y: auto;
}

/* 输入框右边距为0 */
.text-area:not(.output-area) {
    padding-right: 0;
}

/* 翻译框保持右边距20px */
.text-area.output-area {
    padding-right: 20px;
}

.text-area::placeholder {
    color: var(--text-muted);
}

.output-area {
    background: var(--bg-subtle);
    color: var(--text-secondary);
}

.output-area.has-content {
    background: var(--bg-subtle);
    color: var(--text-color);
    align-items: flex-start;
    justify-content: flex-start;
}

.placeholder {
    color: var(--text-muted);
    text-align: left;
    font-size: 16px;
}

.text-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    padding-right: 6px;
    background: rgba(250, 250, 250, 0.95);
    backdrop-filter: blur(4px);
    border-top: 1px solid var(--border-light);
    font-size: 12px;
    color: var(--text-secondary);
    height: 48px;
}

.char-info {
    font-weight: 500;
}

.status-info {
    flex: 1;
    text-align: center;
}

.panel-tools {
    display: flex;
    gap: 6px;
    width: 44px;
    justify-content: center;
}

.input-actions {
    display: none;
    flex-direction: column;
    gap: 8px;
    padding: 6px;
    padding-top: 20px;
    align-items: center;
    justify-content: flex-start;
    opacity: 0;
    transition: opacity 0.2s ease;
    width: 44px;
    flex-shrink: 0;
}

.text-area.has-content ~ .input-actions {
    display: flex;
    opacity: 1;
}

.tool-btn {
    background: transparent;
    border: 1px solid transparent;
    border-radius: 4px;
    padding: 8px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.2s ease;
}

.tool-btn:hover {
    background: var(--border-light);
}

.tool-btn.primary {
    background: var(--border-light);
    border-color: transparent;
    color: var(--text-color);
    font-weight: 500;
}

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

.tool-btn.toggle {
    position: relative;
    background: transparent;
    border-color: transparent;
}

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

.tool-btn.toggle.active {
    background: var(--border-color);
    color: var(--text-color);
    border-color: var(--border-color);
}

.tool-btn.toggle.active:hover {
    background: var(--border-hover);
    border-color: var(--border-hover);
}

.tool-btn.primary:disabled {
    background: var(--bg-subtle);
    color: var(--text-muted);
    cursor: not-allowed;
    opacity: 0.6;
}

.tool-btn.primary:disabled:hover {
    background: var(--bg-subtle);
}

.status {
    font-size: 12px;
    font-weight: 500;
}

.status.translating {
    color: #dc2626;
}

.status.completed {
    color: #16a34a;
}

.status.error {
    color: #dc2626;
}

/* 翻译状态样式 */
#output-text.translating {
    color: #dc2626;
    font-style: italic;
}

#output-text.error {
    color: #dc2626;
    font-style: italic;
}

@media (max-width: 768px) {
    body {
        padding: 12px;
    }

    .app {
        border-radius: 6px;
    }

    .language-controls {
        flex-direction: column;
        gap: 16px;
        padding: 20px;
        height: auto;
    }

    .translation-container {
        grid-template-columns: 1fr;
    }

    .input-panel {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .text-area {
        min-height: 200px;
        padding: 16px;
        padding-bottom: 50px;
    }

    .text-overlay {
        padding: 12px 16px;
    }
}

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

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

.success {
    /* 移除缩放动画，避免页面抖动 */
    /* animation: success 0.4s ease-out; */
}

/* 移除抖动动画
@keyframes success {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.01);
    }
    100% {
        transform: scale(1);
    }
}
*/

/* API设置面板样式 */
.settings-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(2px);
}

.settings-modal.show {
    display: flex;
}

.settings-content {
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 10px 40px var(--shadow-strong);
    width: 90%;
    max-width: 500px;
    max-height: 85vh;
    overflow: hidden;
    animation: slideIn 0.3s ease-out;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.settings-content-inner {
    max-height: 85vh;
    overflow-y: auto;
}

.settings-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    transition: border-color 0.3s ease;
}

.settings-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-color);
    margin: 0;
    transition: color 0.3s ease;
}

.close-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-btn:hover {
    background: var(--border-light);
    color: var(--text-color);
}

.settings-form {
    padding: 18px 20px;
}

.config-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-light);
}

.config-header h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-color);
    margin: 0;
}

.config-actions {
    display: flex;
    gap: 6px;
    align-items: center;
}

.config-selector {
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    background: var(--bg-subtle);
    color: var(--text-color);
    min-width: 140px;
    box-sizing: border-box;
    vertical-align: top;
}

.config-selector:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.btn-new, .btn-delete {
    padding: 6px 14px;
    border: none;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-new {
    background: var(--accent-color);
    color: white;
}

.btn-new:hover {
    background: var(--accent-hover);
}

.btn-delete {
    background: #dc2626;
    color: white;
}

.btn-delete:hover {
    background: #b91c1c;
}

.btn-delete:disabled {
    background: #e5e5e5;
    color: #9ca3af;
    cursor: not-allowed;
}

.btn-delete:disabled:hover {
    background: #e5e5e5;
}

.form-group {
    margin-bottom: 16px;
}

.form-group:last-of-type {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-color);
    margin-bottom: 5px;
}

.form-group input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 7px;
    font-size: 13px;
    background: var(--bg-subtle);
    transition: all 0.2s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-color);
    background: var(--card-bg);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.prompt-textarea {
    width: 100%;
    min-height: 100px;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 7px;
    font-size: 13px;
    background: var(--bg-subtle);
    transition: all 0.2s ease;
    font-family: inherit;
    line-height: 1.4;
    resize: vertical;
}

.prompt-textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    background: var(--card-bg);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.prompt-textarea::placeholder {
    color: var(--text-muted);
    font-size: 12px;
}

.prompt-help {
    margin-top: 4px;
}

.prompt-help small {
    color: var(--text-secondary);
    font-size: 11px;
}

.security-note {
    margin-top: 4px;
}

.security-note small {
    color: #16a34a;
    font-size: 11px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.form-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--border-light);
}

.btn-secondary, .btn-primary {
    padding: 6px 14px;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    min-width: 60px;
}

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

.btn-secondary:hover {
    background: var(--border-light);
    color: var(--text-color);
}

.btn-primary {
    background: var(--accent-color);
    color: white;
}

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

.btn-primary:active {
    transform: scale(0.98);
}

/* 设置标签页样式 */
.settings-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 0;
}

.tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    padding: 12px 16px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.2s ease;
}

.tab-btn:hover {
    color: var(--text-color);
    background: var(--border-light);
}

.tab-btn.active {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
    background: var(--border-light);
}

.tab-content {
    display: none;
    padding: 20px;
}

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

/* 主题设置样式 */
.theme-settings {
    max-height: 500px;
    overflow-y: auto;
}

.theme-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
    margin-top: 12px;
}

.theme-option {
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.theme-option:hover {
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-medium);
}

.theme-option.selected {
    border-color: var(--accent-color);
    background: var(--border-light);
    box-shadow: 0 0 0 1px var(--accent-color);
}

.theme-preview {
    width: 100%;
    height: 60px;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 8px;
    position: relative;
    border: 1px solid var(--border-color);
}

.preview-bg {
    width: 100%;
    height: 100%;
    position: relative;
}

.preview-card {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 70%;
    height: 60%;
    border-radius: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-text {
    width: 80%;
    height: 3px;
    border-radius: 2px;
    background: currentColor;
    opacity: 0.6;
}

.theme-name {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-color);
    display: block;
    margin-top: 4px;
}

@keyframes slideIn {
    from {
        transform: scale(0.9) translateY(-20px);
        opacity: 0;
    }
    to {
        transform: scale(1) translateY(0);
        opacity: 1;
    }
}

/* 响应式设计调整 */
@media (max-width: 768px) {
    .language-controls {
        gap: 10px;
        height: auto;
        min-height: 48px;
        padding: 12px 16px;
        flex-direction: column;
        align-items: stretch;
    }

    .language-selector {
        gap: 10px;
        flex: none;
    }

    .model-info {
        text-align: center;
        font-size: 12px;
    }

    .settings-btn {
        align-self: center;
    }

    .settings-content {
        margin: 20px;
        width: calc(100% - 40px);
    }
}

/* 特效样式 */
.fireworks-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    overflow: hidden;
    background: transparent;
}

/* 樱花花瓣 */
.sakura-petal {
    position: absolute;
    width: 20px;
    height: 20px;
    background: linear-gradient(45deg, #ffb7c5 0%, #ffc0cb 50%, #ffdddd 100%);
    border-radius: 0 100% 0 100%;
    animation: sakura-fall 8s linear infinite;
    opacity: 0.8;
}

.sakura-petal::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: inherit;
    border-radius: 0 100% 0 100%;
    transform: rotate(90deg);
}

@keyframes sakura-fall {
    0% {
        transform: translateY(-100vh) rotate(0deg) scale(1);
        opacity: 0;
    }
    10% {
        opacity: 0.8;
    }
    90% {
        opacity: 0.8;
    }
    100% {
        transform: translateY(100vh) rotate(720deg) scale(0.8);
        opacity: 0;
    }
}

/* 梦幻泡泡 */
.bubble {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(ellipse at 30% 30%, 
        rgba(255, 255, 255, 0.8) 0%, 
        rgba(255, 182, 193, 0.3) 20%,
        rgba(173, 216, 230, 0.2) 60%,
        transparent 100%);
    box-shadow: 
        inset 0 -5px 10px rgba(255, 182, 193, 0.3),
        inset 0 5px 10px rgba(255, 255, 255, 0.5),
        0 0 20px rgba(255, 182, 193, 0.2);
    animation: bubble-float 6s ease-in-out infinite;
}

.bubble::before {
    content: '';
    position: absolute;
    top: 10%;
    left: 20%;
    width: 30%;
    height: 30%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.9) 0%, transparent 70%);
    border-radius: 50%;
}

@keyframes bubble-float {
    0% {
        transform: translateY(100vh) translateX(0) scale(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    50% {
        transform: translateY(50vh) translateX(50px) scale(1);
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) translateX(-50px) scale(1.2);
        opacity: 0;
    }
}

/* 极光效果 */
.aurora {
    position: absolute;
    width: 200%;
    height: 60%;
    top: 0;
    left: -50%;
    background: linear-gradient(135deg,
        transparent 0%,
        rgba(120, 119, 198, 0.1) 20%,
        rgba(255, 119, 198, 0.2) 30%,
        rgba(120, 219, 255, 0.2) 40%,
        rgba(220, 119, 255, 0.2) 60%,
        rgba(120, 255, 198, 0.1) 80%,
        transparent 100%);
    filter: blur(40px);
    animation: aurora-wave 15s ease-in-out infinite;
}

@keyframes aurora-wave {
    0%, 100% {
        transform: translateX(-50%) skewX(-15deg);
        opacity: 0;
    }
    25% {
        opacity: 0.6;
    }
    50% {
        transform: translateX(50%) skewX(15deg);
        opacity: 0.8;
    }
    75% {
        opacity: 0.6;
    }
}

/* 闪烁星星 */
.sparkle-star {
    position: absolute;
    color: #ffd700;
    font-size: 20px;
    animation: sparkle 2s ease-in-out infinite;
    text-shadow: 0 0 10px #ffd700, 0 0 20px #fff;
}

@keyframes sparkle {
    0%, 100% {
        transform: scale(0) rotate(0deg);
        opacity: 0;
    }
    50% {
        transform: scale(1) rotate(180deg);
        opacity: 1;
    }
}

/* 爱心漂浮 */
.love-heart {
    position: absolute;
    color: #ff69b4;
    font-size: 24px;
    animation: heart-float-up 4s ease-out forwards;
    filter: drop-shadow(0 0 10px #ff69b4);
}

@keyframes heart-float-up {
    0% {
        transform: translateY(0) scale(0) rotate(-45deg);
        opacity: 0;
    }
    15% {
        transform: translateY(-50px) scale(1.2) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(-500px) scale(0.8) rotate(45deg);
        opacity: 0;
    }
}

/* 梦幻文字 */
.dream-text {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    font-size: 48px;
    font-weight: 100;
    font-family: 'Georgia', serif;
    background: linear-gradient(45deg, 
        #ff69b4, #ffc0cb, #dda0dd, #ff69b4);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: dream-appear 3s ease-out forwards, gradient-flow 3s linear infinite;
    filter: drop-shadow(0 0 20px rgba(255, 105, 180, 0.3));
}

@keyframes dream-appear {
    0% {
        transform: translate(-50%, -50%) scale(0);
        opacity: 0;
        letter-spacing: 30px;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.1);
        opacity: 1;
        letter-spacing: 5px;
    }
    100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0;
        letter-spacing: 2px;
    }
}

@keyframes gradient-flow {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* 蝴蝶飞舞 */
.butterfly {
    position: absolute;
    font-size: 30px;
    animation: butterfly-fly 10s ease-in-out infinite;
}

@keyframes butterfly-fly {
    0% {
        transform: translateX(0) translateY(0) rotate(0deg);
    }
    25% {
        transform: translateX(100px) translateY(-50px) rotate(45deg);
    }
    50% {
        transform: translateX(200px) translateY(0) rotate(-45deg);
    }
    75% {
        transform: translateX(100px) translateY(50px) rotate(45deg);
    }
    100% {
        transform: translateX(0) translateY(0) rotate(0deg);
    }
}