/* ==================== 认证页面样式 ==================== */
.auth-container {
    min-height: calc(100vh - 64px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    background: var(--bg-secondary);
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--bg-primary);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 40px;
}

.auth-header {
    text-align: center;
    margin-bottom: 32px;
}

.auth-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    margin-bottom: 16px;
}

.auth-logo i {
    font-size: 32px;
}

.auth-logo img {
    height: 48px;
    max-height: 48px;
    width: auto;
    max-width: 280px;
    object-fit: contain;
}

.auth-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.auth-form {
    margin-bottom: 24px;
}

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

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.input-group {
    position: relative;
}

.input-group i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    font-size: 16px;
}

.form-control {
    width: 100%;
    padding: 14px 16px 14px 48px;
    font-size: 15px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    transition: var(--transition);
    outline: none;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-control::placeholder {
    color: var(--text-tertiary);
}

.input-group.with-btn {
    display: flex;
    align-items: center;
}

.input-group.with-btn .form-control {
    padding-right: 120px;
}

.input-group.with-btn .btn {
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    padding: 8px 16px;
    font-size: 13px;
}

.form-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
}

.checkbox-item input {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.forgot-link {
    font-size: 14px;
    color: var(--primary-color);
    text-decoration: none;
}

.forgot-link:hover {
    text-decoration: underline;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 24px;
    font-size: 15px;
    font-weight: 500;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
}

.btn-outline:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-qq {
    background: #12B7F5;
    color: white;
}

.btn-qq:hover {
    background: #0099d8;
    transform: translateY(-2px);
}

.auth-divider {
    display: flex;
    align-items: center;
    margin: 24px 0;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.auth-divider span {
    padding: 0 16px;
    font-size: 14px;
    color: var(--text-tertiary);
}

.auth-error,
.auth-success {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 14px;
}

.auth-error {
    background: #fff2f0;
    border: 1px solid #ffccc7;
    color: #cf1322;
}

.auth-success {
    background: #f6ffed;
    border: 1px solid #b7eb8f;
    color: #389e0d;
}

.auth-footer {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.auth-footer p {
    margin: 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.auth-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

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

/* 黑暗主题 */
body.dark-theme .auth-container {
    background: var(--bg-primary);
}

body.dark-theme .auth-card {
    background: var(--bg-secondary);
}

body.dark-theme .auth-error {
    background: #2c1618;
    border-color: #5c2d30;
}

body.dark-theme .auth-success {
    background: #162312;
    border-color: #274916;
}

/* 响应式 */
@media (max-width: 480px) {
    .auth-card {
        padding: 24px;
    }
    
    .auth-title {
        font-size: 20px;
    }
    
    .input-group.with-btn .btn {
        padding: 6px 12px;
        font-size: 12px;
    }
}