/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 20px;
    padding: 0;
    background-color: #f4f4f4;
}

h1, h2 {
    color: #333;
}

form {
    background: #fff;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 5px;
}

input[type="text"],
input[type="password"],
select {
    width: 100%;
    padding: 8px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

input[type="submit"] {
    background-color: #4CAF50;
    color: white;
    padding: 10px 15px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

input[type="submit"]:hover {
    background-color: #45a049;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

table, th, td {
    border: 1px solid #ddd;
}

th, td {
    padding: 8px;
    text-align: left;
}

th {
    background-color: #4CAF50;
    color: white;
}

tr:nth-child(even) {
    background-color: #f2f2f2;
}

a {
    color: #4CAF50;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

ul {
    list-style-type: none;
    padding: 0;
}

li {
    margin-bottom: 10px;
}

/* 登录页面样式 */
.login-body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-size: cover;
}

.login-container {
    background-color: rgba(255, 255, 255, 0.95);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    width: 340px;
    backdrop-filter: blur(10px);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    color: #2d3748;
    font-size: 28px;
    font-weight: 600;
    margin: 0;
    position: relative;
}

.login-header h1::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    margin: 10px auto 0;
    border-radius: 3px;
}

.login-form {
    display: flex;
    flex-direction: column;
}

.login-form-group {
    margin-bottom: 20px;
    position: relative;
}

.login-form-group label {
    display: block;
    margin-bottom: 8px;
    color: #4a5568;
    font-weight: 600;
    font-size: 14px;
}

.login-input-icon {
    position: absolute;
    left: 12px;
    top: 38px;
    color: #a0aec0;
    font-size: 16px;
}

.login-form-group input[type="text"],
.login-form-group input[type="password"] {
    width: 100%;
    padding: 12px 12px 12px 40px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 15px;
    background-color: #f7fafc;
    color: #2d3748;
}

.login-form-group input[type="text"]:focus,
.login-form-group input[type="password"]:focus {
    border-color: #667eea;
    outline: none;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    background-color: white;
}

.login-form input[type="submit"] {
    padding: 14px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 10px;
}

.error-message {
    background: linear-gradient(135deg, #fed7d7, #fbb6ce);
    color: #c53030;
    padding: 12px 16px;
    border-radius: 8px;
    text-align: center;
    margin-bottom: 20px;
    font-size: 14px;
    font-weight: 500;
    border-left: 4px solid #f56565;
    box-shadow: 0 2px 6px rgba(245, 101, 101, 0.1);
}

.svg-icon {
    display: inline-block;
    width: 1em;
    height: 1em;
    stroke-width: 0;
    stroke: currentColor;
    fill: currentColor;
    vertical-align: middle;
}

.login-remember-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.login-remember-section input[type="checkbox"] {
    width: auto;
    margin-right: 10px;
}

.login-remember-section label {
    margin: 0;
    font-weight: normal;
}

/* 主页样式 */
:root {
    --primary-color: #4a6cf7;
    --secondary-color: #6c8cff;
    --tertiary-color: #36b37e;
    --danger-color: #ff5630;
    --warning-color: #ffab00;
    --info-color: #00b8d9;
    --text-color: #ffffff;
    --button-radius: 12px;
    --box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    --card-bg: rgba(255, 255, 255, 0.1);
    --backdrop-blur: blur(12px);
    --border-radius: 16px;
}

.index-body {
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: var(--text-color);
    margin: 0;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

.index-body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 20%, rgba(74, 108, 247, 0.2) 0%, transparent 35%),
        radial-gradient(circle at 80% 60%, rgba(54, 179, 126, 0.2) 0%, transparent 30%),
        radial-gradient(circle at 40% 85%, rgba(0, 184, 217, 0.2) 0%, transparent 25%);
    z-index: -1;
}

.index-container {
    width: 100%;
    max-width: 1300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.5rem;
}

.index-header {
    text-align: center;
    padding: 2rem;
    background: var(--card-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    width: 100%;
}

.index-header h1 {
    font-size: 2.8rem;
    margin-bottom: 0.8rem;
    background: linear-gradient(45deg, #ffffff, #e6e6e6);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 1;
}

.index-header h1::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    margin: 10px auto 0;
    border-radius: 2px;
}

.index-subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
    font-weight: 300;
    position: relative;
    z-index: 1;
}

.index-button-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    justify-content: center;
    width: 100%;
    background: var(--card-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
}

.index-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    padding: 1.3rem 1.5rem;
    background: linear-gradient(145deg, var(--primary-color), var(--secondary-color));
    color: var(--text-color);
    text-decoration: none;
    border-radius: var(--button-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
    font-weight: 500;
    letter-spacing: 0.5px;
    border: none;
    cursor: pointer;
}

/* 按钮图标样式 */
.index-btn i {
    font-size: 1.2rem;
}

/* 按钮颜色变化 */
.index-btn-storage {
    background: linear-gradient(145deg, var(--tertiary-color), #48cae4);
}

.index-btn-movement {
    background: linear-gradient(145deg, var(--info-color), #64dfdf);
}

.index-btn-maintenance {
    background: linear-gradient(145deg, var(--warning-color), #ffd60a);
}

.index-btn-admin {
    background: linear-gradient(145deg, #722ed1, #9254de);
}

.index-logout-btn {
    background: linear-gradient(145deg, var(--danger-color), #ff7550);
    padding: 1rem 3rem;
    width: fit-content;
    margin-top: 1rem;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .index-button-container {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
        gap: 1.2rem;
    }
    
    .index-header h1 {
        font-size: 2.3rem;
    }
}

@media (max-width: 768px) {
    .index-body {
        padding: 1rem;
    }
    
    .index-container {
        gap: 1.5rem;
    }
    
    .index-header {
        padding: 1.5rem;
    }
    
    .index-header h1 {
        font-size: 2rem;
    }
    
    .index-button-container {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        padding: 1.5rem;
        gap: 1rem;
    }
    
    .index-btn {
        padding: 1rem;
        font-size: 0.9rem;
        flex-direction: column;
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    .index-button-container {
        grid-template-columns: 1fr;
        gap: 0.8rem;
        padding: 1rem;
    }
    
    .index-header h1 {
        font-size: 1.8rem;
    }
    
    .index-subtitle {
        font-size: 0.9rem;
    }
    
    .index-btn {
        padding: 0.9rem;
        font-size: 0.85rem;
    }
}