/* Extracted from modal_auth.html for browser caching across navigations */
/* ===== CSS 变量定义 ===== */
:root {
    --error: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --success: #22c55e;
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --primary-light: rgba(59, 130, 246, 0.1);
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-muted: #6b7280;
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --radius-sm: 0.125rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-full: 9999px;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --shadow-primary: 0 4px 14px 0 rgba(59, 130, 246, 0.25);
    --shadow-primary-lg: 0 10px 25px -3px rgba(59, 130, 246, 0.3);
    --transition-base: 200ms;
    --transition-slow: 300ms;
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --leading-tight: 1.25;
    --leading-normal: 1.5;
    --primary-gradient: linear-gradient(135deg, #3b82f6 0%, #1e40af 100%);
}

/* ===== 模态框基础样式 ===== */
.ds-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-4);
}

.ds-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.ds-modal-content {
    position: relative;
    background: white;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    max-height: 90vh;
    overflow-y: auto;
    width: 100%;
    max-width: 480px;
    animation: slideInUp 0.3s var(--ease-in-out);
}

.ds-modal-content-lg {
    max-width: 540px;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ===== 模态框头部 ===== */
.ds-modal-header {
    padding: var(--spacing-6) var(--spacing-6) var(--spacing-4);
    border-bottom: 1px solid var(--gray-200);
}

.ds-modal-header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.ds-modal-title {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin: 0;
    line-height: var(--leading-tight);
}

.ds-modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    background: var(--gray-100);
    border-radius: var(--radius-full);
    color: var(--gray-600);
    cursor: pointer;
    transition: all var(--transition-base) var(--ease-out);
}

.ds-modal-close:hover {
    background: var(--gray-200);
    color: var(--gray-800);
    transform: scale(1.05);
}

.ds-modal-close:active {
    transform: scale(0.95);
}

/* ===== 模态框主体 ===== */
.ds-modal-body {
    padding: var(--spacing-6);
}

/* ===== 认证标签 ===== */
.ds-auth-tabs {
    display: flex;
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    padding: var(--spacing-1);
    margin-bottom: var(--spacing-6);
}

.ds-auth-tab {
    flex: 1;
    padding: var(--spacing-3) var(--spacing-4);
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-weight: var(--font-medium);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base) var(--ease-out);
    font-size: var(--text-base);
}

.ds-auth-tab:hover {
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.5);
}

.ds-auth-tab-active {
    background: white;
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
    font-weight: var(--font-semibold);
}

/* ===== 表单样式 ===== */
.ds-auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-5);
}

.ds-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4);
}

.ds-auth-input {
    font-size: var(--text-base);
    padding: 0.875rem 1rem;
    border-radius: var(--radius-lg);
    border: 1.5px solid var(--gray-300);
    transition: all var(--transition-base) var(--ease-out);
}

.ds-auth-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
    outline: none;
}

.ds-field-note {
    color: var(--text-muted);
    font-size: var(--text-sm);
    margin-top: var(--spacing-1);
    display: block;
}

/* ===== 密码输入框 ===== */
.ds-password-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.ds-password-toggle {
    position: absolute;
    right: 12px;
    background: none;
    border: none;
    color: var(--gray-500);
    cursor: pointer;
    padding: var(--spacing-2);
    border-radius: var(--radius-md);
    transition: all var(--transition-base) var(--ease-out);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
}

.ds-password-toggle:hover {
    color: var(--gray-700);
    background: var(--gray-100);
    transform: scale(1.05);
}

.ds-password-toggle:active {
    transform: scale(0.95);
}

/* 密码显示状态时的特殊样式 */
.ds-password-toggle[data-password-visible="true"] {
    color: var(--primary-color);
}

.ds-password-toggle[data-password-visible="true"]:hover {
    color: var(--primary-hover);
    background: var(--primary-light);
}

/* 确保SVG图标平滑过渡 */
.ds-password-toggle svg {
    transition: all var(--transition-base) var(--ease-out);
}

/* ===== Remember Me 复选框增强样式 ===== */
.ds-checkbox-wrapper .ds-checkbox:checked + .ds-checkbox-label {
    color: var(--primary-color);
    font-weight: var(--font-medium);
}

.ds-checkbox-wrapper .ds-checkbox:checked + .ds-checkbox-label::after {
    content: " ✓";
    color: var(--success);
    font-weight: var(--font-bold);
    margin-left: var(--spacing-1);
}

/* Remember Me 提示样式 */
.remember-me-hint {
    font-size: var(--text-sm);
    color: var(--text-muted);
    margin-top: var(--spacing-1);
    padding: var(--spacing-2);
    background: var(--primary-light);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--primary-color);
    display: none;
    animation: slideInDown 0.3s var(--ease-out);
}

.remember-me-hint.show {
    display: block;
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== 密码强度指示器 ===== */
.ds-password-strength {
    margin-top: var(--spacing-2);
}

.ds-strength-meter {
    height: 4px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--spacing-1);
}

.ds-strength-fill {
    height: 100%;
    transition: all var(--transition-slow) var(--ease-out);
    border-radius: var(--radius-full);
}

.ds-strength-fill[data-strength="0"] {
    width: 0%;
    background: var(--gray-300);
}

.ds-strength-fill[data-strength="1"] {
    width: 25%;
    background: var(--error);
}

.ds-strength-fill[data-strength="2"] {
    width: 50%;
    background: var(--warning);
}

.ds-strength-fill[data-strength="3"] {
    width: 75%;
    background: var(--info);
}

.ds-strength-fill[data-strength="4"] {
    width: 100%;
    background: var(--success);
}

/* 密码强度文本颜色 */
.ds-strength-level[data-strength-text="weak"] {
    color: var(--error);
}

.ds-strength-level[data-strength-text="fair"] {
    color: var(--warning);
}

.ds-strength-level[data-strength-text="good"] {
    color: var(--info);
}

.ds-strength-level[data-strength-text="strong"] {
    color: var(--success);
}

.ds-strength-text {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.ds-strength-level {
    font-weight: var(--font-medium);
}

/* ===== 密码匹配验证 ===== */
.ds-password-match {
    margin-top: var(--spacing-1);
    font-size: var(--text-sm);
    min-height: 20px;
}

.ds-password-match.match {
    color: var(--success);
}

.ds-password-match.mismatch {
    color: var(--error);
}

/* ===== 复选框样式 ===== */
.ds-checkbox-wrapper {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
}

.ds-checkbox {
    width: 18px;
    height: 18px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    background: white;
    cursor: pointer;
    transition: all var(--transition-base) var(--ease-out);
    margin: 0;
    flex-shrink: 0;
}

.ds-checkbox:checked {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.ds-checkbox:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--primary-light);
}

.ds-checkbox-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    cursor: pointer;
    line-height: var(--leading-normal);
}

.ds-terms-label {
    line-height: 1.4;
}

.ds-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: var(--font-medium);
    transition: color var(--transition-base) var(--ease-out);
}

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

/* ===== 认证选项 ===== */
.ds-auth-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: var(--spacing-4) 0;
}

/* ===== 条款同意 ===== */
.ds-terms-wrapper {
    padding: var(--spacing-4);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

/* ===== 验证码容器 ===== */
.ds-captcha-wrapper {
    display: flex;
    justify-content: center;
    padding: var(--spacing-4);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    min-height: 100px;
}

/* ===== hCaptcha 样式优化 ===== */
.h-captcha {
    display: inline-block;
}

/* 确保 hCaptcha iframe 正确显示 */
.h-captcha iframe {
    border: none !important;
    border-radius: var(--radius-md) !important;
}

/* ===== 提交按钮 ===== */
.ds-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base) var(--ease-out);
    text-decoration: none;
    font-family: inherit;
    line-height: 1;
}

.ds-btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-primary);
}

.ds-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary-lg);
}

.ds-btn-primary:active {
    transform: translateY(-1px);
}

.ds-auth-submit {
    width: 100%;
    padding: 1rem;
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    margin-top: var(--spacing-2);
    position: relative;
    overflow: hidden;
}

.ds-auth-submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
    background: #94a3b8 !important;
    box-shadow: none !important;
    filter: grayscale(30%);
}

.ds-auth-submit:disabled:hover {
    transform: none !important;
    box-shadow: none !important;
    background: #94a3b8 !important;
}

.ds-auth-submit.disabled-state {
    opacity: 0.4 !important;
    cursor: not-allowed !important;
    pointer-events: none !important;
    background: #94a3b8 !important;
    box-shadow: none !important;
    filter: grayscale(50%) !important;
    user-select: none !important;
}

.ds-auth-submit.disabled-state:hover,
.ds-auth-submit.disabled-state:focus,
.ds-auth-submit.disabled-state:active {
    transform: none !important;
    box-shadow: none !important;
    background: #94a3b8 !important;
    outline: none !important;
}

/* ===== 消息样式 ===== */
.ds-error-message {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(239, 68, 68, 0.2);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
}

.ds-success-message {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success);
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(34, 197, 94, 0.2);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
}

/* ===== 移动端响应式 ===== */
@media (max-width: 640px) {
    .ds-modal {
        padding: var(--spacing-2);
        align-items: flex-start;
        padding-top: var(--spacing-4);
    }
    
    .ds-modal-content {
        max-height: 95vh;
        width: 100%;
        max-width: none;
    }
    
    .ds-modal-header {
        padding: var(--spacing-4) var(--spacing-4) var(--spacing-3);
    }
    
    .ds-modal-title {
        font-size: var(--text-xl);
    }
    
    .ds-modal-body {
        padding: var(--spacing-4);
    }
    
    .ds-auth-form {
        gap: var(--spacing-4);
    }
    
    .ds-form-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-4);
    }
    
    .ds-auth-input {
        font-size: 16px; /* 防止iOS缩放 */
        padding: 1rem 0.875rem;
    }
    
    .ds-checkbox-wrapper {
        align-items: flex-start;
        gap: var(--spacing-2);
    }
    
    .ds-terms-wrapper {
        padding: var(--spacing-3);
    }
    
    .ds-captcha-wrapper {
        padding: var(--spacing-3);
    }
}

@media (max-width: 480px) {
    .ds-modal-close {
        width: 36px;
        height: 36px;
    }
    
    .ds-auth-tab {
        padding: var(--spacing-2) var(--spacing-3);
        font-size: var(--text-sm);
    }
    
    .ds-modal-title {
        font-size: var(--text-lg);
    }
}

/* ===== 无障碍支持 ===== */
@media (prefers-reduced-motion: reduce) {
    .ds-modal-content {
        animation: none;
    }
    
    .ds-modal-overlay {
        animation: none;
    }
    
    .ds-strength-fill {
        transition: none;
    }
}

/* ===== 邮箱验证相关样式 ===== */
.email-error {
    font-size: var(--text-sm);
    color: var(--error);
    margin-top: var(--spacing-1);
    padding: var(--spacing-2);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--radius-md);
    line-height: 1.4;
}

.email-error button {
    background: none;
    border: none;
    color: var(--primary-color);
    text-decoration: underline;
    cursor: pointer;
    font-size: inherit;
    padding: 0;
    margin: 0;
}

.email-error button:hover {
    color: var(--primary-hover);
}

/* ===== 高对比度支持 ===== */
@media (prefers-contrast: high) {
    .ds-auth-input {
        border-width: 2px;
    }
    
    .ds-auth-tab {
        border: 1px solid transparent;
    }
    
    .ds-auth-tab-active {
        border-color: var(--primary-color);
    }
    
    .ds-checkbox {
        border-width: 2px;
    }
}

/* ===== 加载动画样式 ===== */
.ds-loading-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
}

.ds-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== 数据处理同意弹窗样式 ===== */
.consent-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

.consent-section {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-5);
}

.consent-section-title {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-4) 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.consent-section-title::before {
    content: "";
    width: 4px;
    height: 20px;
    background: var(--primary-color);
    border-radius: var(--radius-sm);
}

.consent-section .ds-checkbox-wrapper {
    margin-bottom: var(--spacing-3);
}

.consent-section .ds-checkbox-wrapper:last-of-type {
    margin-bottom: var(--spacing-4);
}

.consent-note {
    font-size: var(--text-sm);
    color: var(--text-muted);
    line-height: var(--leading-normal);
    margin: 0;
    padding: var(--spacing-3);
    background: white;
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
}

.consent-actions {
    display: flex;
    gap: var(--spacing-3);
    justify-content: flex-end;
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--gray-200);
}

.ds-btn-secondary {
    background: white;
    color: var(--text-secondary);
    border: 1px solid var(--gray-300);
}

.ds-btn-secondary:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
    transform: translateY(-1px);
}

/* 移动端响应式 - 同意弹窗 */
@media (max-width: 640px) {
    .consent-section {
        padding: var(--spacing-4);
    }
    
    .consent-actions {
        flex-direction: column-reverse;
        gap: var(--spacing-2);
    }
    
    .consent-actions .ds-btn {
        width: 100%;
        justify-content: center;
    }
}