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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: #f5f5f5;
    overflow-x: hidden;
}

/* 页面切换 */
.page {
    display: none;
    min-height: 100vh;
}

.page.active {
    display: block;
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 渐变背景头部 */
.header-gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 60px 30px 40px;
    text-align: center;
    color: white;
}

.header-fun {
    background: linear-gradient(135deg, #ffd89b 0%, #19547b 100%);
    padding: 60px 30px 40px;
    text-align: center;
    color: white;
}

.emoji-spin {
    font-size: 80px;
    display: inline-block;
    animation: rotate 2s ease-in-out infinite;
}

@keyframes rotate {
    0%, 100% { transform: rotate(-10deg); }
    50% { transform: rotate(10deg); }
}

.title {
    font-size: 36px;
    font-weight: bold;
    margin-bottom: 10px;
}

.subtitle {
    font-size: 16px;
    opacity: 0.9;
}

/* 容器 */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

/* 实习生列表 */
.intern-list {
    display: grid;
    gap: 15px;
    margin-bottom: 80px;
}

.intern-card {
    background: white;
    border-radius: 16px;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.intern-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.intern-info {
    flex: 1;
}

.intern-name {
    font-size: 20px;
    font-weight: bold;
    color: #333;
    margin-bottom: 8px;
}

.intern-id {
    font-size: 14px;
    color: #666;
    margin-bottom: 5px;
}

.intern-dept {
    font-size: 13px;
    color: #999;
}

.intern-salary {
    text-align: right;
}

.salary-label {
    font-size: 12px;
    color: #999;
    margin-bottom: 5px;
}

.salary-amount {
    font-size: 28px;
    font-weight: bold;
    color: #3b82f6;
}

/* 表单 */
.form-card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 20px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.form-item {
    margin-bottom: 20px;
}

.form-item.optional {
    opacity: 0.8;
}

.form-item label {
    display: block;
    font-size: 16px;
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
}

.form-item input,
.form-item textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #f0f0f0;
    border-radius: 12px;
    font-size: 15px;
    transition: all 0.3s;
}

.form-item input:focus,
.form-item textarea:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.salary-input {
    display: flex;
    align-items: center;
    border: 2px solid #f0f0f0;
    border-radius: 12px;
    padding: 0 15px;
    transition: all 0.3s;
}

.salary-input:focus-within {
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.currency {
    font-size: 20px;
    font-weight: bold;
    color: #ff6b6b;
    margin-right: 5px;
}

.salary-input input {
    flex: 1;
    border: none;
    padding: 12px 5px;
    font-size: 16px;
    font-weight: bold;
}

.salary-input input:focus {
    outline: none;
    box-shadow: none;
}

.unit {
    font-size: 14px;
    color: #999;
}

/* 提示卡片 */
.tips-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.tips-icon {
    font-size: 32px;
    margin-right: 15px;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.tips-text {
    flex: 1;
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* 按钮 */
.btn-primary {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    margin-bottom: 10px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

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

.btn-secondary {
    width: 100%;
    padding: 16px;
    background: #f0f0f0;
    color: #333;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-secondary:hover {
    background: #e0e0e0;
}

.btn-fixed {
    position: fixed;
    bottom: 20px;
    left: 20px;
    right: 20px;
    max-width: 760px;
    margin: 0 auto;
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.3);
}

/* 简单头部 */
.header-simple {
    text-align: center;
    margin-bottom: 30px;
    position: relative;
}

.btn-back {
    position: absolute;
    left: 0;
    top: 0;
    background: white;
    border: 2px solid #f0f0f0;
    border-radius: 10px;
    padding: 10px 20px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-back:hover {
    background: #f8f8f8;
    border-color: #3b82f6;
}

.header-simple h2 {
    font-size: 28px;
    color: #333;
    margin-bottom: 5px;
}

.header-simple p {
    font-size: 14px;
    color: #666;
}

/* 实时薪资主卡片 */
.salary-main {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    border-radius: 24px;
    padding: 40px 30px;
    text-align: center;
    color: white;
    margin-bottom: 20px;
    box-shadow: 0 12px 36px rgba(245, 87, 108, 0.4);
}

.salary-label {
    font-size: 16px;
    opacity: 0.9;
    margin-bottom: 15px;
}

.salary-amount-wrapper {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    margin-bottom: 15px;
}

.salary-amount-wrapper .currency {
    font-size: 32px;
    margin-right: 5px;
    margin-top: 8px;
}

.salary-amount {
    font-size: 64px;
    font-weight: bold;
    line-height: 1;
}

.salary-hint {
    font-size: 14px;
    opacity: 0.8;
}

.pulse {
    animation: pulse 1.5s ease-in-out infinite;
}

/* 今日卡片 */
.today-card {
    background: white;
    border-radius: 20px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.today-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.today-title {
    font-size: 18px;
    font-weight: bold;
    color: #333;
}

.today-salary {
    font-size: 20px;
    font-weight: bold;
    color: #f5576c;
}

.progress-bar {
    width: 100%;
    height: 12px;
    background: #f0f0f0;
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    transition: width 1s ease-out;
}

.progress-text {
    font-size: 13px;
    color: #999;
    text-align: center;
}

/* 统计网格 */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 20px;
}

.stat-card {
    background: white;
    border-radius: 16px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.stat-emoji {
    font-size: 36px;
    margin-bottom: 10px;
}

.stat-value {
    font-size: 22px;
    font-weight: bold;
    color: #333;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 13px;
    color: #999;
}

/* 操作按钮 */
.actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 20px;
}

.action-btn {
    background: white;
    border: none;
    border-radius: 16px;
    padding: 20px;
    text-align: center;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    transition: all 0.3s;
}

.action-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.12);
}

.action-btn .btn-emoji {
    font-size: 36px;
    margin-bottom: 8px;
}

.action-btn .btn-text {
    font-size: 15px;
    color: #333;
    font-weight: 500;
}

/* 有趣提示 */
.fun-tips {
    background: white;
    border-radius: 16px;
    padding: 20px;
    display: flex;
    align-items: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.tip-emoji {
    font-size: 32px;
    margin-right: 15px;
}

.tip-text {
    flex: 1;
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* 空状态 */
.empty {
    text-align: center;
    padding: 60px 20px;
}

.empty-emoji {
    font-size: 80px;
    margin-bottom: 20px;
}

.empty-text {
    font-size: 18px;
    color: #666;
    margin-bottom: 10px;
}

.empty-hint {
    font-size: 14px;
    color: #999;
}

/* 添加卡片 */
.add-card {
    background: white;
    border-radius: 20px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.add-card h3 {
    font-size: 20px;
    color: #333;
    margin-bottom: 20px;
}

/* 记录区域 */
.records-section h3 {
    font-size: 20px;
    color: #333;
    margin-bottom: 15px;
}

#leave-list {
    display: grid;
    gap: 12px;
    margin-bottom: 20px;
}

.record-item {
    background: white;
    border-radius: 16px;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.record-info {
    flex: 1;
}

.record-date {
    font-size: 16px;
    font-weight: bold;
    color: #333;
    margin-bottom: 5px;
}

.record-reason {
    font-size: 14px;
    color: #666;
}

.delete-btn {
    font-size: 28px;
    cursor: pointer;
    padding: 5px 10px;
    transition: transform 0.2s;
}

.delete-btn:hover {
    transform: scale(1.2);
}

/* 汇总卡片 */
.summary-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 24px;
    padding: 35px 25px;
    color: white;
    margin-bottom: 30px;
    box-shadow: 0 12px 36px rgba(102, 126, 234, 0.4);
}

.summary-label {
    font-size: 16px;
    opacity: 0.9;
    margin-bottom: 15px;
    text-align: center;
}

.summary-amount-wrapper {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    margin-bottom: 25px;
}

.summary-amount-wrapper .currency {
    font-size: 32px;
    margin-right: 5px;
    margin-top: 5px;
}

.summary-amount {
    font-size: 56px;
    font-weight: bold;
    line-height: 1;
}

.summary-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.summary-item {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 15px;
    text-align: center;
}

.item-value {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 5px;
}

.item-label {
    font-size: 13px;
    opacity: 0.8;
}

/* 年度区域 */
.yearly-section {
    margin-bottom: 30px;
}

.yearly-section h3 {
    font-size: 20px;
    color: #333;
    margin-bottom: 15px;
}

.yearly-card {
    background: white;
    border-radius: 20px;
    padding: 20px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.yearly-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
    border-bottom: 1px solid #f0f0f0;
    font-size: 15px;
}

.yearly-item:last-child {
    border-bottom: none;
}

.yearly-item span:first-child {
    color: #666;
}

.yearly-item span:last-child {
    font-weight: bold;
    color: #333;
}

/* 有趣总结 */
.fun-summary {
    background: white;
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.fun-emoji {
    font-size: 60px;
    margin-bottom: 15px;
    display: inline-block;
    animation: bounce 1s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.fun-text {
    font-size: 16px;
    color: #666;
    line-height: 1.6;
}

/* 响应式 */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    .title {
        font-size: 28px;
    }

    .salary-amount {
        font-size: 48px;
    }

    .stats-grid,
    .actions,
    .summary-grid {
        grid-template-columns: 1fr;
    }
}