body {
    /* 渐变背景：从深蓝黑到石板灰 */
    background: radial-gradient(circle at top right, #1e293b, #0f172a);
    font-family: 'Inter', -apple-system, sans-serif;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    margin: 0;
}

.container {
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
}

.header-section {
    text-align: center;
    margin-bottom: 2.5rem;
}

.logo-text {
    font-size: 1.875rem;
    font-weight: bold;
    letter-spacing: 0.2em;
    color: white;
    line-height: 1.5;
}

.logo-highlight {
    color: #f59e0b;
}

.system-version {
    color: #64748b;
    font-size: 0.75rem;
    margin-top: 0.5rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.login-card {
    background: rgba(30, 41, 59, 0.7);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 1.5rem;
    padding: 2.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
}

.login-title {
    font-size: 1.25rem;
    font-weight: 500;
    color: white;
    margin-bottom: 2rem;
}

.login-subtitle {
    color: #94a3b8;
    font-size: 0.875rem;
}

.role-selector {
    display: flex;
    justify-content: space-between;
    padding: 0.25rem;
    background-color: rgba(15, 23, 42, 0.5);
    border-radius: 0.75rem;
    margin-bottom: 1.5rem;
    width: 100%;
}

.role-option {
    flex: 1;
    cursor: pointer;
}

.role-input {
    display: none;
}

.role-label {
    text-align: center;
    padding: 0.5rem;
    font-size: 0.75rem;
    font-weight: bold;
    color: #64748b;
    cursor: pointer;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.role-input:checked + .role-label {
    background-color: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
}

.input-group {
    position: relative;
    margin-bottom: 1.5rem;
    width: 100%;
}

.input-label {
    font-size: 0.625rem;
    color: #64748b;
    font-weight: bold;
    position: absolute;
    left: 1rem;
    top: -0.5rem;
    background-color: #1e293b;
    padding: 0 0.25rem;
    text-transform: uppercase;
    z-index: 1;
}

.input-field {
    width: 100%;
    background-color: transparent;
    border: 1px solid #334155;
    color: white;
    padding: 1rem;
    border-radius: 0.75rem;
    font-family: monospace;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.input-field:focus {
    outline: none;
    border-color: rgba(245, 158, 11, 0.5);
    box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.2);
}

.login-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.75rem;
    color: #64748b;
    margin-bottom: 1.5rem;
    width: 100%;
}

.forgot-password-btn {
    background: none;
    border: none;
    color: #64748b;
    font-size: 0.75rem;
    cursor: pointer;
    text-decoration: underline;
    padding: 0;
}

.forgot-password-btn:hover {
    color: #f59e0b;
}

.login-btn {
    width: 100%;
    background-color: #f59e0b;
    color: #1e293b;
    font-weight: bold;
    padding: 1rem;
    border: none;
    border-radius: 0.75rem;
    box-shadow: 0 4px 20px rgba(245, 158, 11, 0.2);
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.login-btn:hover {
    background-color: #fbbf24;
}

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

.footer-section {
    margin-top: 2rem;
    text-align: center;
    width: 100%;
}

.footer-text {
    font-size: 0.625rem;
    color: #475569;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.designer-link {
    color: #22d3ee;
}

/* 隐藏输入框自带的样式 */
input:focus { 
    outline: none; 
}

/* 响应式设计 */
@media (max-width: 480px) {
    .container {
        max-width: 95%;
        padding: 0 0.5rem;
    }
    
    .login-card {
        padding: 2rem;
        max-width: 95%;
    }
}