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

body {
    font-family: 'Microsoft YaHei', 'SimSun', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1600px;
    margin: 0 auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    padding: 30px;
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
    font-size: 28px;
    font-weight: 600;
    letter-spacing: 2px;
}

.table-wrapper {
    overflow-x: auto;
    margin-bottom: 20px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    font-size: 14px;
    min-width: 1800px;
}

thead {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

thead th {
    padding: 12px 15px;
    text-align: center;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.3);
    white-space: nowrap;
    position: relative;
}

thead tr:first-child th {
    font-size: 15px;
    padding: 14px 15px;
}

thead tr:last-child th {
    font-size: 13px;
    padding: 10px 15px;
    background: rgba(102, 126, 234, 0.85);
}

tbody {
    background: #fafafa;
}

tbody tr {
    transition: background-color 0.2s;
}

tbody tr:hover {
    background-color: #f0f4ff;
}

tbody tr:nth-child(even) {
    background-color: #ffffff;
}

tbody tr:nth-child(even):hover {
    background-color: #f0f4ff;
}

td {
    padding: 8px 15px;
    border: 1px solid #e0e0e0;
    text-align: center;
    vertical-align: middle;
}

input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #d0d0d0;
    border-radius: 4px;
    font-size: 13px;
    text-align: center;
    transition: all 0.2s;
    background: white;
    overflow-x: auto;
    overflow-y: hidden;
    white-space: nowrap;
    box-sizing: border-box;
    min-width: 80px;
}

input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.2);
    background: #fff;
}

input[type="text"]:focus:not(.input-total):not(.input-date) {
    text-align: left;
}

input:hover {
    border-color: #a0a0a0;
}

/* 复选框样式 */
input[type="checkbox"] {
    width: 24px;
    height: 24px;
    cursor: pointer;
    accent-color: #667eea;
    margin: 0 auto;
    display: block;
    overflow: visible;
    white-space: normal;
}

input[type="checkbox"]:hover {
    transform: scale(1.1);
}

/* 只读的总分输入框样式 */
input.input-total {
    background: #f5f5f5;
    font-weight: 600;
    color: #333;
    cursor: default;
    text-align: center;
}

input.input-total:focus {
    background: #f5f5f5;
    border-color: #d0d0d0;
    box-shadow: none;
    text-align: center;
}

/* 数值输入框样式 */
input[type="number"] {
    -moz-appearance: textfield;
    appearance: textfield;
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    appearance: none;
    margin: 0;
}

.input-date {
    font-family: inherit;
    text-align: center;
}

input[type="date"]:focus {
    text-align: center;
}

.input-text {
    font-family: inherit;
}

.input-text::placeholder {
    color: #bbb;
    font-size: 12px;
}

.button-group {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 20px;
}

.btn-add, .btn-save, .btn-load, .btn-export, .btn-clear-table, .btn-clear-storage {
    padding: 12px 24px;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    white-space: nowrap;
}

.btn-add {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-add:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

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

.btn-save {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    box-shadow: 0 4px 15px rgba(245, 87, 108, 0.4);
}

.btn-save:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 87, 108, 0.6);
}

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

.btn-load {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    box-shadow: 0 4px 15px rgba(79, 172, 254, 0.4);
}

.btn-load:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 172, 254, 0.6);
}

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

.btn-export {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    box-shadow: 0 4px 15px rgba(17, 153, 142, 0.4);
}

.btn-export:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(17, 153, 142, 0.6);
}

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

.btn-clear-table {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    box-shadow: 0 4px 15px rgba(250, 112, 154, 0.4);
}

.btn-clear-table:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(250, 112, 154, 0.6);
}

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

.btn-clear-storage {
    background: linear-gradient(135deg, #fc466b 0%, #3f5efb 100%);
    box-shadow: 0 4px 15px rgba(252, 70, 107, 0.4);
}

.btn-clear-storage:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(252, 70, 107, 0.6);
}

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

/* 响应式设计 */
@media (max-width: 1400px) {
    .table-wrapper {
        border-radius: 8px;
    }
    
    table {
        font-size: 12px;
    }
    
    input {
        padding: 6px 4px;
        font-size: 12px;
    }
    
    thead th {
        padding: 10px 6px;
    }
}

/* 移动端适配（手机、竖屏） */
@media (max-width: 768px) {
    body {
        padding: 10px;
        background: #f3f4ff;
    }

    .container {
        max-width: 100%;
        margin: 0;
        padding: 12px;
        border-radius: 8px;
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    }

    h1 {
        font-size: 20px;
        margin-bottom: 16px;
        letter-spacing: 1px;
    }

    .table-wrapper {
        border-radius: 6px;
        margin: 0 -4px 12px;
    }

    table {
        font-size: 12px;
        min-width: 1400px;
    }

    thead th {
        padding: 8px 6px;
    }

    td {
        padding: 6px 10px;
    }

    input {
        padding: 8px 10px;
        font-size: 13px;
        min-height: 38px;
    }

    .button-group {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
        margin-top: 16px;
    }

    .btn-add, .btn-save, .btn-load, .btn-export, .btn-clear-table, .btn-clear-storage {
        width: 100%;
        font-size: 14px;
        padding: 10px 18px;
    }
}

/* 打印样式 */
@media print {
    body {
        background: white;
        padding: 0;
    }
    
    .container {
        box-shadow: none;
        padding: 0;
    }
    
    .button-group {
        display: none;
    }
    
    .table-wrapper {
        border: none;
    }
    
    input {
        border: none;
        background: transparent;
    }
}