/**
 * Folio Theme - Consolidated Styles
 * 
 * 合并和优化的CSS样式文件
 * 消除重复样式，提高性能和可维护性
 *
 * @package Folio
 */

/* ==========================================================================
   CSS Variables - 统一变量定义
   ========================================================================== */
:root {
    /* 基础颜色 */
    --folio-bg: #f4f5f7;
    --folio-bg-secondary: #ffffff;
    --folio-text: #1f2937;
    --folio-text-light: #6b7280;
    --folio-text-muted: #9ca3af;
    --folio-white: #ffffff;
    --folio-black: #111111;
    --folio-border: #e5e7eb;
    --folio-shadow: rgba(0, 0, 0, 0.1);
    --folio-card-bg: #ffffff;
    --folio-hover-bg: #f3f4f6;

    /* 会员等级颜色 */
    --folio-vip-primary: #f59e0b;
    --folio-vip-secondary: #d97706;
    --folio-vip-bg: #fef3c7;
    --folio-vip-bg-light: #fde68a;
    
    --folio-svip-primary: #8b5cf6;
    --folio-svip-secondary: #7c3aed;
    --folio-svip-bg: #ede9fe;
    --folio-svip-bg-light: #ddd6fe;
    
    --folio-success: #10b981;
    --folio-success-bg: #d1fae5;
    
    /* 字体 */
    --folio-font-primary: 'Roboto Condensed', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    --folio-font-heading: 'Oswald', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;

    /* 过渡动画 */
    --folio-transition: all 0.2s ease;
    --folio-transition-slow: all 0.3s ease;
}

/* 深色模式变量 */
[data-theme="dark"] {
    --folio-bg: #111827;
    --folio-bg-secondary: #1f2937;
    --folio-text: #f9fafb;
    --folio-text-light: #d1d5db;
    --folio-text-muted: #9ca3af;
    --folio-white: #1f2937;
    --folio-black: #f9fafb;
    --folio-border: #374151;
    --folio-shadow: rgba(0, 0, 0, 0.3);
    --folio-card-bg: #1f2937;
    --folio-hover-bg: #374151;
}

/* ==========================================================================
   统一按钮样式 - Unified Button Styles
   ========================================================================== */

/* 基础按钮 */
.folio-btn,
.premium-btn,
.membership-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: 1px solid transparent;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--folio-transition);
    text-align: center;
    white-space: nowrap;
}

/* 按钮尺寸变体 */
.folio-btn-size-small,
.premium-btn-size-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.folio-btn-size-large,
.premium-btn-size-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* 主要按钮 */
.folio-btn-primary,
.premium-btn-login,
.folio-btn-login {
    background: #3b82f6;
    color: white;
}

.folio-btn-primary:hover,
.premium-btn-login:hover,
.folio-btn-login:hover {
    background: #2563eb;
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

/* 次要按钮 */
.folio-btn-secondary,
.premium-btn-register,
.folio-btn-register {
    background: transparent;
    color: var(--folio-text);
    border-color: var(--folio-border);
}

.folio-btn-secondary:hover,
.premium-btn-register:hover,
.folio-btn-register:hover {
    background: var(--folio-hover-bg);
    color: var(--folio-text);
    border-color: var(--folio-text-light);
}

/* 升级按钮 */
.folio-btn-upgrade,
.premium-btn-upgrade,
.membership-btn-upgrade {
    background: linear-gradient(135deg, var(--folio-vip-primary) 0%, var(--folio-vip-secondary) 100%);
    color: white;
    font-weight: 700;
}

.folio-btn-upgrade:hover,
.premium-btn-upgrade:hover,
.membership-btn-upgrade:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    color: white;
}

/* SVIP按钮变体 */
.folio-btn-svip,
.folio-level-svip .folio-btn-upgrade,
.premium-level-svip .premium-btn-upgrade,
.membership-card-svip .membership-btn-upgrade {
    background: linear-gradient(135deg, var(--folio-svip-primary) 0%, var(--folio-svip-secondary) 100%);
}

/* 当前状态按钮 */
.folio-btn-current,
.membership-btn-current {
    background: var(--folio-success);
    color: white;
    cursor: default;
    opacity: 0.8;
}

/* 按钮样式变体 */
.folio-btn-style-outline,
.premium-btn-style-outline {
    background: transparent;
    border: 2px solid currentColor;
}

.folio-btn-style-solid,
.premium-btn-style-solid {
    background: currentColor;
    color: white;
}

/* 加载状态 */
.folio-btn.loading,
.folio-btn-loading,
.premium-btn.loading {
    opacity: 0.7;
    pointer-events: none;
    position: relative;
}

.folio-btn.loading::after,
.folio-btn-loading::after,
.premium-btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* ==========================================================================
   统一会员徽章样式 - Unified Membership Badge Styles
   ========================================================================== */

/* 基础徽章 */
.folio-membership-badge,
.membership-badge-icon,
.folio-premium-badge,
.premium-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: var(--folio-transition);
    vertical-align: middle;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* 徽章尺寸变体 */
.folio-badge-size-small,
.membership-badge-small {
    font-size: 9px;
    padding: 3px 6px;
    gap: 3px;
    border-radius: 10px;
}

.folio-badge-size-large {
    font-size: 13px;
    padding: 6px 12px;
    gap: 6px;
    border-radius: 16px;
}

/* FREE徽章 */
.folio-badge-free,
.membership-badge-free,
.folio-premium-badge-free {
    background: #f3f4f6;
    color: #6b7280;
    border: 1px solid #e5e7eb;
}

/* VIP徽章 */
.folio-badge-vip,
.membership-badge-vip,
.folio-premium-badge-vip {
    background: linear-gradient(135deg, var(--folio-vip-bg) 0%, var(--folio-vip-bg-light) 100%);
    color: var(--folio-vip-secondary);
    border: 1px solid var(--folio-vip-primary);
    padding: 0 8px;
    border-radius: 15px;
}

/* SVIP徽章 */
.folio-badge-svip,
.membership-badge-svip,
.folio-premium-badge-svip {
    background: linear-gradient(135deg, var(--folio-svip-bg) 0%, var(--folio-svip-bg-light) 100%);
    color: var(--folio-svip-secondary);
    border: 1px solid var(--folio-svip-primary);
    padding: 0 8px;
    border-radius: 15px;
}

/* 解锁状态徽章 */
.folio-badge-unlocked,
.folio-premium-badge-unlocked {
    background: linear-gradient(135deg, var(--folio-success-bg) 0%, #a7f3d0 100%);
    color: #065f46;
    border: 1px solid var(--folio-success);
}

/* 徽章悬停效果 */
.folio-membership-badge:hover,
.folio-premium-badge:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* ==========================================================================
   统一会员内容样式 - Unified Premium Content Styles
   ========================================================================== */

/* 基础内容容器 */
.folio-protected-article,
.premium-content,
.folio-content-mask {
    position: relative;
    margin: 2rem 0;
    border-radius: 12px;
    overflow: hidden;
    border: 2px solid var(--folio-border);
}

/* 解锁状态 */
.premium-content-unlocked,
.folio-content-unlocked {
    padding: 1.5rem;
    background: var(--folio-card-bg);
    border-color: var(--folio-success);
}

/* 锁定状态 */
.premium-content-locked,
.folio-protected-article {
    background: linear-gradient(135deg, #f9fafb 0%, #f3f4f6 100%);
}

/* VIP级别样式 */
.premium-level-vip,
.folio-level-vip .folio-protected-article,
.folio-prompt-vip {
    border-color: var(--folio-vip-primary);
    background: linear-gradient(135deg, var(--folio-vip-bg) 0%, var(--folio-vip-bg-light) 100%);
}

/* SVIP级别样式 */
.premium-level-svip,
.folio-level-svip .folio-protected-article,
.folio-prompt-svip {
    border-color: var(--folio-svip-primary);
    background: linear-gradient(135deg, var(--folio-svip-bg) 0%, var(--folio-svip-bg-light) 100%);
}

/* 内容预览 */
.folio-content-preview,
.premium-content-preview,
.folio-preview-content {
    padding: 1.5rem;
    color: var(--folio-text-light);
    line-height: 1.7;
    position: relative;
}

/* 渐变遮罩 */
.folio-content-fade,
.premium-content-fade {
    height: 60px;
    background: linear-gradient(transparent, var(--folio-bg));
    margin-top: -60px;
    position: relative;
    z-index: 1;
    pointer-events: none;
}

/* VIP级别渐变 */
.folio-level-vip .folio-content-fade {
    background: linear-gradient(transparent, var(--folio-vip-bg-light));
}

/* SVIP级别渐变 */
.folio-level-svip .folio-content-fade {
    background: linear-gradient(transparent, var(--folio-svip-bg-light));
}

/* ==========================================================================
   统一权限提示样式 - Unified Permission Prompt Styles
   ========================================================================== */

/* 基础提示容器 */
.folio-permission-prompt,
.premium-content-lock {
    padding: 2rem;
    text-align: center;
    background: var(--folio-card-bg);
    border-top: 1px solid var(--folio-border);
    position: relative;
    z-index: 2;
}

/* 提示头部 */
.folio-prompt-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 2rem 2rem 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

/* 提示图标 */
.folio-prompt-icon,
.premium-lock-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.1);
    color: var(--folio-text-light);
    font-size: 24px;
    flex-shrink: 0;
}

/* VIP图标样式 */
.folio-level-vip .folio-prompt-icon,
.folio-prompt-vip .folio-prompt-icon,
.premium-level-vip .premium-lock-icon {
    background: rgba(245, 158, 11, 0.2);
    color: var(--folio-vip-primary);
}

/* SVIP图标样式 */
.folio-level-svip .folio-prompt-icon,
.folio-prompt-svip .folio-prompt-icon,
.premium-level-svip .premium-lock-icon {
    background: rgba(139, 92, 246, 0.2);
    color: var(--folio-svip-primary);
}

/* 提示标题 */
.folio-prompt-title,
.premium-lock-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 1rem 0;
    color: var(--folio-text);
}

/* 提示描述 */
.folio-prompt-description,
.premium-lock-description {
    color: var(--folio-text-light);
    margin: 0 0 1.5rem 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* 操作按钮区域 */
.folio-prompt-actions,
.premium-lock-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ==========================================================================
   统一会员卡片样式 - Unified Membership Card Styles
   ========================================================================== */

/* 基础卡片 */
.membership-card {
    background: var(--folio-card-bg);
    border: 2px solid var(--folio-border);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    transition: var(--folio-transition-slow);
    position: relative;
    overflow: hidden;
}

/* 卡片顶部装饰条 */
.membership-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #6b7280, #9ca3af);
}

/* VIP卡片 */
.membership-card-vip {
    border-color: var(--folio-vip-primary);
}

.membership-card-vip::before {
    background: linear-gradient(90deg, var(--folio-vip-primary), var(--folio-vip-secondary));
}

/* SVIP卡片 */
.membership-card-svip {
    border-color: var(--folio-svip-primary);
}

.membership-card-svip::before {
    background: linear-gradient(90deg, var(--folio-svip-primary), var(--folio-svip-secondary));
}

/* 当前会员卡片 */
.membership-card-current {
    border-color: var(--folio-success);
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.05), rgba(5, 150, 105, 0.05));
}

.membership-card-current::before {
    background: linear-gradient(90deg, var(--folio-success), #059669);
}

/* 推荐卡片 */
.membership-card-highlight {
    transform: scale(1.05);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    z-index: 1;
}

/* 卡片悬停效果 */
.membership-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

/* 卡片标题 */
.membership-card-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 1rem 0;
    color: var(--folio-text);
}

/* 价格显示 */
.membership-card-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
    margin-bottom: 2rem;
}

.price-amount {
    font-size: 2rem;
    font-weight: 800;
    color: var(--folio-text);
}

.price-duration {
    font-size: 1rem;
    color: var(--folio-text-muted);
}

/* 功能列表 */
.membership-card-features,
.membership-features {
    text-align: left;
    margin: 2rem 0;
}

.membership-feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--folio-border);
}

.membership-feature:last-child {
    border-bottom: none;
}

.feature-icon {
    width: 20px;
    height: 20px;
    color: var(--folio-success);
    flex-shrink: 0;
}

/* ==========================================================================
   统一动画效果 - Unified Animations
   ========================================================================== */

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

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

@keyframes pulse-success {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.2);
    }
}

@keyframes pulse-warning {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.1);
    }
}

/* 入场动画 */
.folio-permission-prompt,
.premium-content {
    animation: fadeInUp 0.5s ease-out;
}

/* ==========================================================================
   响应式设计 - Responsive Design
   ========================================================================== */

@media (max-width: 768px) {
    /* 按钮响应式 */
    .folio-btn,
    .premium-btn,
    .membership-btn {
        width: 100%;
        justify-content: center;
    }
    
    .folio-prompt-actions,
    .premium-lock-actions {
        flex-direction: column;
    }
    
    /* 提示响应式 */
    .folio-permission-prompt,
    .premium-content-lock {
        padding: 1.5rem;
    }
    
    .folio-prompt-header {
        flex-direction: column;
        text-align: center;
        padding: 1.5rem 1.5rem 1rem;
    }
    
    .folio-prompt-icon,
    .premium-lock-icon {
        width: 48px;
        height: 48px;
        font-size: 20px;
    }
    
    .folio-prompt-title,
    .premium-lock-title {
        font-size: 1.25rem;
    }
    
    /* 卡片响应式 */
    .membership-card {
        padding: 1.5rem;
    }
    
    .membership-card-title {
        font-size: 1.25rem;
    }
    
    .price-amount {
        font-size: 1.5rem;
    }
    
    /* 徽章响应式 */
    .folio-membership-badge,
    .folio-premium-badge {
        font-size: 9px;
        padding: 3px 6px;
        gap: 3px;
    }
}

@media (max-width: 480px) {
    .folio-membership-badge,
    .folio-premium-badge {
        font-size: 8px;
        padding: 2px 5px;
    }
}

/* ==========================================================================
   无障碍访问 - Accessibility
   ========================================================================== */

/* 高对比度模式 */
@media (prefers-contrast: high) {
    .folio-permission-prompt,
    .premium-content {
        border-width: 3px;
    }
    
    .folio-btn,
    .premium-btn,
    .membership-btn {
        border-width: 2px;
    }
}

/* 减少动画模式 */
@media (prefers-reduced-motion: reduce) {
    .folio-permission-prompt,
    .premium-content,
    .folio-btn,
    .premium-btn,
    .membership-btn,
    .folio-membership-badge,
    .membership-card {
        animation: none;
        transition: none;
    }
}

/* 焦点样式 */
.folio-btn:focus,
.premium-btn:focus,
.membership-btn:focus,
.folio-membership-badge:focus {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
}

/* ==========================================================================
   深色模式适配 - Dark Mode Adaptations
   ========================================================================== */

[data-theme="dark"] .folio-protected-article,
[data-theme="dark"] .premium-content-locked {
    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
}

[data-theme="dark"] .folio-content-preview,
[data-theme="dark"] .premium-content-preview {
    background: #111827;
    color: #d1d5db;
}

[data-theme="dark"] .folio-content-fade,
[data-theme="dark"] .premium-content-fade {
    background: linear-gradient(transparent, #111827);
}

[data-theme="dark"] .folio-permission-prompt,
[data-theme="dark"] .premium-content-lock {
    background: #1f2937;
    color: #f9fafb;
    border-color: #374151;
}

[data-theme="dark"] .folio-prompt-title,
[data-theme="dark"] .premium-lock-title {
    color: #f9fafb;
}

[data-theme="dark"] .folio-prompt-description,
[data-theme="dark"] .premium-lock-description {
    color: #d1d5db;
}

[data-theme="dark"] .membership-badge-free {
    background: #374151;
    color: #9ca3af;
}

[data-theme="dark"] .folio-badge-vip,
[data-theme="dark"] .membership-badge-vip,
[data-theme="dark"] .folio-premium-badge-vip {
    background: rgba(245, 158, 11, 0.2);
    color: #fbbf24;
    padding: 0 8px;
    border-radius: 15px;
}

[data-theme="dark"] .folio-badge-svip,
[data-theme="dark"] .membership-badge-svip,
[data-theme="dark"] .folio-premium-badge-svip {
    background: rgba(139, 92, 246, 0.2);
    color: #a78bfa;
    padding: 0 8px;
    border-radius: 15px;
}