/* 全局样式重置和基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    color: #333;
}

/* 登录容器 */
.login-container {
    width: 100%;
    max-width: 900px;
    position: relative;
}

/* 登录卡片 */
.login-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 500px;
    backdrop-filter: blur(10px);
}

/* Logo区域 */
.logo-section {
    background: linear-gradient(135deg, #4ade80 0%, #22c55e 50%, #16a34a 100%);
    color: white;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.logo-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.1)"/></svg>') repeat;
    animation: float 20s linear infinite;
}

@keyframes float {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.logo {
    font-size: 4rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.system-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 1;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.system-subtitle {
    font-size: 1.2rem;
    font-weight: 300;
    margin-bottom: 1.5rem;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

.company-info {
    position: relative;
    z-index: 1;
}

.company-info p {
    font-size: 1rem;
    opacity: 0.8;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 1rem;
}

/* 表单区域 */
.login-form-section {
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.login-form-section h2 {
    font-size: 2rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 2rem;
    text-align: center;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* 输入组样式 */
.input-group {
    position: relative;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper i {
    position: absolute;
    left: 15px;
    color: #6b7280;
    z-index: 1;
}

.input-wrapper input {
    width: 100%;
    padding: 15px 20px 15px 50px;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #f9fafb;
}

.input-wrapper input:focus {
    outline: none;
    border-color: #22c55e;
    background: white;
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.input-wrapper input::placeholder {
    color: #9ca3af;
}

/* 密码切换按钮 */
.password-toggle {
    position: absolute;
    top:15px;
    right: 30px;
    background: none;
    border: none;
    color: #6b7280;
    cursor: pointer;
    padding: 5px;
    border-radius: 5px;
    transition: color 0.3s ease;
}

.password-toggle:hover {
    color: #22c55e;
}

/* 表单选项 */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: -0.5rem;
}

.remember-me {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 0.9rem;
    color: #6b7280;
}

.remember-me input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid #d1d5db;
    border-radius: 4px;
    margin-right: 8px;
    position: relative;
    transition: all 0.3s ease;
}

.remember-me input:checked + .checkmark {
    background: #22c55e;
    border-color: #22c55e;
}

.remember-me input:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    color: white;
    font-size: 12px;
    left: 2px;
    top: -2px;
}

.forgot-password {
    color: #22c55e;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.forgot-password:hover {
    color: #16a34a;
    text-decoration: underline;
}

/* 登录按钮 */
.login-btn {
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 1rem;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(34, 197, 94, 0.3);
}

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

/* 注册区域 */
.register-section {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid #e5e7eb;
}

.register-section p {
    color: #6b7280;
    font-size: 0.95rem;
}

.register-link {
    color: #22c55e;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.register-link:hover {
    color: #16a34a;
    text-decoration: underline;
}

/* 底部信息 */
.footer {
    text-align: center;
    margin-top: 2rem;
    color: rgba(255, 255, 255, 0.8);
}

.footer p {
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background-color: #fefefe;
    margin: 15% auto;
    padding: 30px;
    border-radius: 15px;
    width: 90%;
    max-width: 400px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    position: relative;
    animation: slideIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.close {
    position: absolute;
    right: 15px;
    top: 15px;
    font-size: 24px;
    font-weight: bold;
    cursor: pointer;
    color: #aaa;
    transition: color 0.3s;
}

.close:hover {
    color: #333;
}

.modal-content h3 {
    margin-bottom: 15px;
    color: #333;
    font-size: 1.3rem;
}

.modal-content p {
    margin-bottom: 20px;
    color: #666;
    line-height: 1.5;
}

.modal-btn {
    background: #22c55e;
    color: white;
    border: none;
    padding: 10px 25px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
}

.modal-btn:hover {
    background: #16a34a;
}

/* 响应式设计 */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    .login-card {
        grid-template-columns: 1fr;
        max-width: 400px;
    }
    
    .logo-section {
        padding: 30px 20px;
    }
    
    .logo {
        font-size: 3rem;
    }
    
    .system-title {
        font-size: 2rem;
    }
    
    .system-subtitle {
        font-size: 1rem;
    }
    
    .login-form-section {
        padding: 30px 20px;
    }
    
    .login-form-section h2 {
        font-size: 1.5rem;
    }
    
    .form-options {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .login-form-section {
        padding: 20px 15px;
    }
    
    .logo-section {
        padding: 20px 15px;
    }
    
    .input-wrapper input {
        padding: 12px 15px 12px 45px;
    }
    
    .login-btn {
        padding: 12px 25px;
        font-size: 1rem;
    }
}