/* ============================================
   认证页面样式 - 登录/注册
   ============================================ */

.auth-page {
    min-height: 100vh;
    background-color: var(--bg-secondary);
}

.auth-container {
    display: flex;
    min-height: 100vh;
}

/* Left Panel - Illustration */
.auth-left {
    flex: 0 0 45%;
    background: linear-gradient(135deg, #1e3a5f 0%, #0f172a 100%);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.auth-left::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.auth-brand {
    position: relative;
    z-index: 1;
}

.auth-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
}

.auth-logo i {
    font-size: 1.5rem;
    color: var(--primary-light);
}

.auth-illustration {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    text-align: center;
}

.auth-illustration img {
    max-width: 350px;
    margin-bottom: 2rem;
}

.auth-illustration h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.75rem;
}

.auth-illustration p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 320px;
}

/* Right Panel - Form */
.auth-right {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.auth-form-container {
    width: 100%;
    max-width: 440px;
    position: relative;
}

.auth-lang {
    position: absolute;
    top: 0;
    right: 0;
    z-index: 10;
}

.auth-lang .lang-btn {
    color: var(--text-secondary);
    padding: 0.5rem;
    cursor: pointer;
    background: none;
    border: none;
}

.auth-lang .lang-btn:hover {
    background-color: var(--bg-secondary);
    border-radius: var(--radius);
}

.auth-lang .lang-dropdown {
    min-width: 120px;
}

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

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

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

/* Form Styles */
.auth-form .form-group {
    margin-bottom: 1.25rem;
}

.auth-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.auth-form label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.auth-form label .required {
    color: var(--danger-color);
}

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

.input-wrapper i:first-child {
    position: absolute;
    left: 1rem;
    color: var(--text-muted);
    font-size: 1rem;
    pointer-events: none;
}

.input-wrapper input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    font-size: 0.9375rem;
    color: var(--text-primary);
    background-color: white;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius);
    transition: all var(--transition-fast);
}

.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::placeholder {
    color: var(--text-muted);
}

.form-group.error .input-wrapper input {
    border-color: var(--danger-color);
}

.form-group.error .input-wrapper input:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.toggle-password {
    position: absolute;
    right: 1rem;
    padding: 1rem;
    color: var(--text-muted);
    transition: color var(--transition-fast);
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
}

.toggle-password i {
    font-size: 1rem;
}

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

.form-hint {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.375rem;
}

.error-message {
    display: block;
    font-size: 0.75rem;
    color: var(--danger-color);
    margin-top: 0.375rem;
    min-height: 1rem;
}

/* Password Strength */
.password-strength {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.strength-bar {
    flex: 1;
    height: 4px;
    background-color: var(--border-color);
    border-radius: 2px;
    overflow: hidden;
}

.strength-bar span {
    display: block;
    height: 100%;
    width: 0;
    transition: all var(--transition);
}

.password-strength.weak .strength-bar span {
    width: 33%;
    background-color: var(--danger-color);
}

.password-strength.medium .strength-bar span {
    width: 66%;
    background-color: var(--warning-color);
}

.password-strength.strong .strength-bar span {
    width: 100%;
    background-color: var(--success-color);
}

.strength-text {
    font-size: 0.75rem;
    font-weight: 500;
    min-width: 30px;
}

.password-strength.weak .strength-text {
    color: var(--danger-color);
}

.password-strength.medium .strength-text {
    color: var(--warning-color);
}

.password-strength.strong .strength-text {
    color: var(--success-color);
}

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

.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-secondary);
    white-space: nowrap;
    flex-wrap: nowrap;
}

.checkbox-wrapper span {
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex-wrap: nowrap;
}

.checkbox-wrapper input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 1.5px solid var(--border-color);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.checkbox-wrapper input:checked ~ .checkmark {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.checkbox-wrapper input:checked ~ .checkmark::after {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 0.625rem;
    color: white;
}

.forgot-link {
    font-size: 0.875rem;
    color: var(--primary-color);
    font-weight: 500;
}

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

/* Loading Icon */
.loading-icon {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Auth Divider */
.auth-divider {
    display: flex;
    align-items: center;
    margin: 1.5rem 0;
}

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

.auth-divider span {
    padding: 0 1rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Social Login */
.social-login {
    display: flex;
    gap: 1rem;
}

.btn-social {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius);
    border: 1.5px solid var(--border-color);
    background-color: white;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.btn-social:hover {
    border-color: var(--text-muted);
    background-color: var(--bg-secondary);
}

.btn-wechat i {
    color: #07c160;
}

/* Auth Footer */
.auth-footer {
    margin-top: 2rem;
    text-align: center;
}

.auth-footer p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.auth-footer a {
    font-weight: 500;
    color: var(--primary-color);
}

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

/* Responsive */
@media (max-width: 1024px) {
    .auth-left {
        flex: 0 0 40%;
    }
}

@media (max-width: 768px) {
    .auth-container {
        flex-direction: column;
    }
    
    .auth-left {
        display: none;
    }
    
    .auth-right {
        padding: 1.5rem;
    }
    
    .auth-form-container {
        max-width: 100%;
    }
    
    .auth-form .form-row {
        grid-template-columns: 1fr;
    }
    
    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
}