/* 认证页面样式 */

.auth-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 2rem;
}

.auth-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 3rem;
    max-width: 450px;
    width: 100%;
    box-shadow: var(--shadow-lg);
    animation: fadeIn 0.5s ease;
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #ffffff, var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.auth-header p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.auth-form {
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
    background: rgba(255, 255, 255, 0.08);
}

.form-group small {
    display: block;
    margin-top: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.captcha-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 0.5rem;
    margin-bottom: 0.75rem;
}

.captcha-question {
    flex: 1;
    color: var(--primary-color);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.btn-refresh {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 0.4rem;
    padding: 0.4rem 0.6rem;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.btn-refresh:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: rotate(180deg);
}

.error-message {
    padding: 1rem;
    background: rgba(255, 51, 102, 0.1);
    border: 1px solid var(--error-color);
    border-radius: 0.5rem;
    color: var(--error-color);
    margin-bottom: 1rem;
    animation: shake 0.5s ease;
}

.success-message {
    padding: 1rem;
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid var(--success-color);
    border-radius: 0.5rem;
    color: var(--success-color);
    margin-bottom: 1rem;
    animation: fadeIn 0.5s ease;
}

.btn-full {
    width: 100%;
    margin-top: 0.5rem;
}

.auth-footer {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.auth-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.auth-footer a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

.admin-hint {
    margin-top: 1.5rem;
    padding: 1rem;
    background: rgba(0, 212, 255, 0.05);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 0.5rem;
    text-align: center;
}

.admin-hint p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

.admin-hint strong {
    color: var(--primary-color);
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

/* 响应式 */
@media (max-width: 768px) {
    .auth-card {
        padding: 2rem;
    }
    
    .auth-header h1 {
        font-size: 1.5rem;
    }
}