/* 认证页面样式 */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 2rem;
}

.auth-card {
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 480px;
    padding: 3rem;
    animation: fadeInUp 0.5s ease;
}

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

.auth-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.auth-header p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.auth-form {
    margin-top: 2rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 0.95rem;
}

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

.input-wrapper i {
    position: absolute;
    left: 1rem;
    color: var(--text-light);
    z-index: 1;
}

.input-wrapper input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 3rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    font-family: inherit;
}

.input-wrapper input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.input-wrapper.input-with-button {
    display: flex;
    gap: 0.5rem;
}

.input-wrapper.input-with-button input {
    flex: 1;
}

.toggle-password {
    position: absolute;
    right: 1rem;
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1;
    transition: color 0.3s ease;
}

.toggle-password:hover {
    color: var(--primary-color);
}

.input-hint {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-light);
}

.password-strength {
    margin-top: 0.5rem;
    height: 4px;
    border-radius: 2px;
    background: var(--border-color);
    overflow: hidden;
}

.password-strength-bar {
    height: 100%;
    width: 0%;
    transition: all 0.3s ease;
    border-radius: 2px;
}

.password-strength.weak .password-strength-bar {
    width: 33%;
    background: #ef4444;
}

.password-strength.medium .password-strength-bar {
    width: 66%;
    background: #f59e0b;
}

.password-strength.strong .password-strength-bar {
    width: 100%;
    background: #10b981;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-dark);
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.checkbox-label a {
    color: var(--primary-color);
    text-decoration: none;
}

.checkbox-label a:hover {
    text-decoration: underline;
}

.forgot-link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.forgot-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.btn-block {
    width: 100%;
    padding: 0.875rem;
    font-size: 1rem;
}

.btn-sms {
    padding: 0.75rem 1.5rem;
    white-space: nowrap;
    font-size: 0.9rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

.btn-sms:hover:not(:disabled) {
    background: var(--primary-dark);
}

.btn-sms:disabled {
    background: var(--text-light);
    cursor: not-allowed;
}

.auth-divider {
    text-align: center;
    margin: 1.5rem 0;
    position: relative;
}

.auth-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border-color);
}

.auth-divider span {
    background: white;
    padding: 0 1rem;
    color: var(--text-light);
    position: relative;
    z-index: 1;
}

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.form-actions .btn {
    flex: 1;
}
    border-top: 1px solid var(--border-color);
}

.auth-footer p {
    color: var(--text-light);
    font-size: 0.9rem;
}

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

.auth-footer a:hover {
    text-decoration: underline;
}

/* 错误提示 */
.error-message {
    color: #ef4444;
    font-size: 0.85rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.error-message i {
    font-size: 0.9rem;
}

/* 成功提示 */
.success-message {
    color: #10b981;
    font-size: 0.85rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* 响应式设计 */
@media (max-width: 640px) {
    .auth-container {
        padding: 1rem;
    }

    .auth-card {
        padding: 2rem 1.5rem;
    }

    .auth-header h1 {
        font-size: 1.75rem;
    }

    .input-wrapper.input-with-button {
        flex-direction: column;
    }

    .btn-sms {
        width: 100%;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}