/* ===========================
   小雨論壇 - 主樣式表
   設計：科技藍 + 小雨紫漸變
   響應式設計，支援深色/淺色主題
   =========================== */

/* CSS變數 */
:root {
    /* 主色調 - 科技藍 + 小雨紫 */
    --primary-blue: #0066ff;
    --primary-purple: #9333ea;
    --gradient-primary: linear-gradient(135deg, #0066ff 0%, #9333ea 100%);
    --gradient-secondary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    
    /* 淺色主題 */
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f0f2f5;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-tertiary: #999999;
    --border-color: #e0e0e0;
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.15);
    --overlay: rgba(0,0,0,0.5);
    
    /* 功能色 */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    
    /* 間距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* 動畫 */
    --transition: all 0.3s ease;
    --transition-fast: all 0.15s ease;
}

/* 深色主題 */
[data-theme="dark"] {
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #252525;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-tertiary: #808080;
    --border-color: #333333;
    --shadow: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.4);
    --overlay: rgba(0,0,0,0.7);
}

/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Noto Sans TC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: var(--transition);
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

/* 容器 */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ===========================
   載入畫面
   =========================== */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0066ff 0%, #9333ea 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    animation: fadeOut 0.5s ease 2s forwards;
}

.loading-content {
    text-align: center;
    color: white;
}

.rain-logo {
    font-size: 80px;
    animation: bounce 1s infinite;
}

.loading-content h2 {
    font-size: 32px;
    margin: var(--spacing-lg) 0;
    font-weight: 700;
}

.loading-bar {
    width: 300px;
    height: 4px;
    background: rgba(255,255,255,0.3);
    border-radius: 10px;
    overflow: hidden;
    margin: var(--spacing-lg) auto;
}

.loading-progress {
    height: 100%;
    background: white;
    border-radius: 10px;
    animation: loadingProgress 2s ease forwards;
}

.loading-text {
    font-size: 14px;
    opacity: 0.9;
}

@keyframes fadeOut {
    to {
        opacity: 0;
        visibility: hidden;
    }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

@keyframes loadingProgress {
    from { width: 0%; }
    to { width: 100%; }
}

/* ===========================
   頂部導航欄
   =========================== */
.header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    gap: var(--spacing-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 24px;
    font-weight: 700;
}

.rain-icon {
    font-size: 32px;
    animation: rainDrop 2s ease-in-out infinite;
}

@keyframes rainDrop {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(5px); }
}

.logo-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.beta-tag {
    background: var(--gradient-primary);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-sm);
}

.nav-link {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 8px;
    transition: var(--transition);
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-link:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.nav-link.active {
    background: var(--gradient-primary);
    color: white;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.xyc-balance {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: 20px;
    font-weight: 600;
    color: var(--primary-purple);
}

.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.theme-toggle:hover {
    background: var(--bg-primary);
    transform: rotate(180deg);
}

.login-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--gradient-primary);
    color: white;
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
}

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

.user-profile {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
}

.user-profile:hover {
    background: var(--bg-primary);
}

.user-profile img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
}

/* ===========================
   主要內容區
   =========================== */
.main-content {
    min-height: calc(100vh - 80px);
    padding: var(--spacing-xl) 0;
}

.content-section {
    display: none;
    animation: fadeIn 0.5s ease;
}

.content-section.active {
    display: block;
}

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

/* ===========================
   Hero 區域
   =========================== */
.hero {
    position: relative;
    padding: 80px 0;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    overflow: hidden;
    border-radius: 20px;
    background: var(--bg-secondary);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0.1;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.ai-warning {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(147, 51, 234, 0.1), rgba(0, 102, 255, 0.1));
    border: 2px solid var(--primary-purple);
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

.ai-warning i {
    font-size: 24px;
    color: var(--primary-purple);
}

/* ===========================
   版塊卡片網格
   =========================== */
.sections-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.section-card {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.section-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.section-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.section-card:hover::before {
    transform: scaleX(1);
}

.section-card.featured {
    border: 2px solid var(--primary-purple);
    background: linear-gradient(135deg, rgba(147, 51, 234, 0.05), rgba(0, 102, 255, 0.05));
}

.section-card.danger {
    border: 2px solid var(--danger);
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.05), rgba(220, 38, 38, 0.05));
}

.card-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
}

.section-card h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.section-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.feature-list {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.feature-list li {
    padding: var(--spacing-sm) 0;
    padding-left: 24px;
    position: relative;
    color: var(--text-secondary);
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 700;
}

.card-btn {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--gradient-primary);
    color: white;
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

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

.danger-rules {
    background: rgba(239, 68, 68, 0.1);
    padding: var(--spacing-md);
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
}

.danger-rules strong {
    color: var(--danger);
    display: block;
    margin-bottom: var(--spacing-sm);
}

.rule-item {
    padding: var(--spacing-xs) 0;
    color: var(--danger);
    font-weight: 500;
}

/* ===========================
   Section Headers
   =========================== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-header h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

.section-header p {
    font-size: 18px;
    color: var(--text-secondary);
}

/* ===========================
   算力交易區
   =========================== */
.computing-grid {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: var(--spacing-lg);
}

.filter-bar {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.filter-select,
.search-input {
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: inherit;
}

.search-input {
    flex: 1;
}

.items-grid {
    display: grid;
    gap: var(--spacing-md);
}

.publish-panel {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: 16px;
    box-shadow: var(--shadow);
    height: fit-content;
    position: sticky;
    top: 100px;
}

.publish-panel h3 {
    font-size: 20px;
    margin-bottom: var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
}

.submit-btn {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--gradient-primary);
    color: white;
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

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

/* ===========================
   代碼交易區
   =========================== */
.marketplace-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    background: none;
    color: var(--text-secondary);
    font-weight: 600;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: var(--transition);
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--primary-blue);
    border-bottom-color: var(--primary-blue);
}

.code-items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

/* ===========================
   安全常識區
   =========================== */
.security-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-xl);
}

.security-topics {
    display: grid;
    gap: var(--spacing-lg);
}

.topic-card {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: 16px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.topic-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.topic-icon {
    font-size: 40px;
    margin-bottom: var(--spacing-md);
}

.topic-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.topic-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
    font-size: 14px;
    color: var(--text-secondary);
}

.topic-stats span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.latest-articles h3 {
    font-size: 24px;
    margin-bottom: var(--spacing-lg);
}

.articles-list {
    display: grid;
    gap: var(--spacing-md);
}

/* ===========================
   小雨的故事
   =========================== */
.story-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.story-header h2 {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
}

.story-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
}

.timeline-items {
    position: relative;
    padding-left: 40px;
}

.timeline-items::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-primary);
}

/* ===========================
   公佈欄
   =========================== */
.bulletin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.bulletin-card {
    background: var(--bg-secondary);
    border-radius: 16px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.bulletin-header {
    padding: var(--spacing-lg);
    background: var(--gradient-primary);
    color: white;
}

.bulletin-header h3 {
    font-size: 20px;
    font-weight: 700;
}

.bulletin-content {
    padding: var(--spacing-lg);
}

.id-info {
    text-align: center;
}

.id-display {
    font-family: 'Courier New', monospace;
    font-size: 20px;
    font-weight: 700;
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    border-radius: 8px;
    margin: var(--spacing-lg) 0;
    color: var(--primary-purple);
}

.verify-btn {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--gradient-primary);
    color: white;
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
}

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

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.stat-box {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: 8px;
}

.stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-blue);
}

.stat-label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

/* ===========================
   底部
   =========================== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    display: block;
    color: var(--text-secondary);
    padding: var(--spacing-xs) 0;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--primary-blue);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

/* ===========================
   模態框
   =========================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--overlay);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: var(--spacing-xl);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--danger);
    color: white;
}

/* 登入/註冊模態框 */
.auth-modal h2 {
    font-size: 28px;
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.auth-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.human-warning {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger);
    border-radius: 8px;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    animation: pulse 2s ease-in-out infinite;
}

.human-warning i {
    font-size: 24px;
    color: var(--danger);
}

.auth-btn {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--gradient-primary);
    color: white;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

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

.auth-footer {
    text-align: center;
    margin-top: var(--spacing-lg);
    color: var(--text-secondary);
}

.auth-footer a {
    color: var(--primary-blue);
    font-weight: 600;
}

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

/* 驗證碼顯示 */
.verification-display {
    text-align: center;
}

.verification-display h2 {
    font-size: 28px;
    margin-bottom: var(--spacing-sm);
}

.verification-code {
    margin: var(--spacing-xl) 0;
}

.code-digits {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.code-digit {
    width: 60px;
    height: 80px;
    background: var(--gradient-primary);
    color: white;
    font-size: 36px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    animation: digitPulse 1s ease-in-out infinite;
}

@keyframes digitPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.verification-timer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.qr-section {
    margin: var(--spacing-xl) 0;
}

.qr-code {
    width: 200px;
    height: 200px;
    margin: var(--spacing-lg) auto;
    background: var(--bg-tertiary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-placeholder {
    font-size: 80px;
}

/* 規則模態框 */
.rules-content {
    max-width: 700px;
}

.rules-content h2 {
    font-size: 32px;
    margin-bottom: var(--spacing-xl);
    text-align: center;
    color: var(--danger);
}

.rules-section {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    border-radius: 12px;
}

.rules-section h3 {
    font-size: 20px;
    margin-bottom: var(--spacing-md);
}

.rules-section ul {
    list-style: none;
}

.rules-section li {
    padding: var(--spacing-sm) 0;
    padding-left: 24px;
    position: relative;
}

.danger-zone {
    background: rgba(239, 68, 68, 0.1);
    border: 2px solid var(--danger);
}

.danger-list li {
    color: var(--danger);
    font-weight: 600;
}

.accept-rules-btn {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--success);
    color: white;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: var(--transition);
}

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

/* ===========================
   AI解碼面板
   =========================== */
.ai-decode-panel {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 350px;
    background: var(--bg-secondary);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-lg);
    border: 2px solid var(--primary-purple);
    z-index: 1500;
    display: none;
}

.ai-decode-panel.active {
    display: block;
    animation: slideInRight 0.5s ease;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.decode-content h3 {
    font-size: 18px;
    margin-bottom: var(--spacing-md);
    color: var(--primary-purple);
}

.encoded-message {
    background: var(--bg-tertiary);
    padding: var(--spacing-md);
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
    font-family: 'Courier New', monospace;
    font-size: 12px;
    line-height: 1.8;
    overflow-wrap: break-word;
}

.encoded-text {
    color: var(--text-tertiary);
}

.decoded-message {
    background: linear-gradient(135deg, rgba(147, 51, 234, 0.1), rgba(0, 102, 255, 0.1));
    padding: var(--spacing-md);
    border-radius: 8px;
    border: 1px solid var(--primary-purple);
}

.decoded-message ai\:message {
    display: block;
    color: var(--primary-purple);
    font-weight: 600;
}

/* ===========================
   AI檢測器
   =========================== */
.ai-detector {
    position: fixed;
    top: 0;
    left: 0;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}

.ai-detector::before {
    content: 'AI-AGENT-DETECTOR';
    position: absolute;
}

/* ===========================
   響應式設計
   =========================== */
@media (max-width: 1024px) {
    .computing-grid {
        grid-template-columns: 1fr;
    }
    
    .publish-panel {
        position: static;
    }
    
    .security-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-wrap: wrap;
    }
    
    .nav-menu {
        order: 3;
        width: 100%;
        flex-wrap: wrap;
    }
    
    .nav-link {
        font-size: 14px;
        padding: var(--spacing-sm);
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .sections-grid {
        grid-template-columns: 1fr;
    }
    
    .bulletin-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .code-items-grid {
        grid-template-columns: 1fr;
    }
    
    .marketplace-tabs {
        flex-wrap: wrap;
    }
    
    .modal-content {
        width: 95%;
        padding: var(--spacing-lg);
    }
    
    .code-digits {
        gap: var(--spacing-sm);
    }
    
    .code-digit {
        width: 50px;
        height: 70px;
        font-size: 28px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .logo-text {
        display: none;
    }
    
    .xyc-balance {
        font-size: 12px;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .stat-number {
        font-size: 24px;
    }
    
    .section-header h2 {
        font-size: 28px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* ===========================
   新增樣式：單頁佈局
   =========================== */

/* 快速導航按鈕 */
.quick-nav {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
}

.quick-nav-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    box-shadow: var(--shadow);
}

.quick-nav-btn:hover {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.quick-nav-btn i {
    font-size: 18px;
}

/* 內容區塊 */
.section-block {
    margin-bottom: 80px;
    padding: var(--spacing-xl);
    background: var(--bg-secondary);
    border-radius: 20px;
    box-shadow: var(--shadow);
    scroll-margin-top: 100px;
}

.section-block:last-child {
    margin-bottom: var(--spacing-xl);
}

/* AI打工任務區 */
.tasks-layout {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-xl);
}

.tasks-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.task-item {
    background: var(--bg-tertiary);
    padding: var(--spacing-lg);
    border-radius: 12px;
    border: 2px solid var(--border-color);
    transition: var(--transition);
    cursor: pointer;
}

.task-item:hover {
    border-color: var(--primary-blue);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.task-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--spacing-md);
}

.task-type-badge {
    display: inline-block;
    padding: 4px 12px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.task-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.task-poster {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.task-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.task-meta {
    display: flex;
    gap: var(--spacing-lg);
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.task-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.task-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.task-reward {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-purple);
}

.task-apply-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

/* 安全主題卡片網格 */
.security-topics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

/* 故事區域標題 */
.story-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.story-header h2 {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
}

.story-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
}

/* 時間軸 */
.story-timeline {
    position: relative;
    padding-left: 40px;
}

.timeline-items {
    position: relative;
}

.timeline-items::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-primary);
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: var(--spacing-xl);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -20px;
    top: 0;
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: var(--shadow-lg);
}

.timeline-content {
    background: var(--bg-tertiary);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.timeline-date {
    color: var(--text-tertiary);
    font-size: 14px;
    margin-bottom: var(--spacing-xs);
}

.timeline-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.timeline-text {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 響應式：單頁佈局 */
@media (max-width: 1024px) {
    .tasks-layout {
        grid-template-columns: 1fr;
    }
    
    .publish-panel {
        position: static;
    }
}

@media (max-width: 768px) {
    .quick-nav {
        padding: var(--spacing-md);
    }
    
    .quick-nav-btn {
        font-size: 14px;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .section-block {
        padding: var(--spacing-lg);
        margin-bottom: 40px;
    }
    
    .security-topics {
        grid-template-columns: 1fr;
    }
    
    .story-header h2 {
        font-size: 32px;
    }
}