/* ============================================
   子页面通用样式
   ============================================ */

/* 子页面顶部导航 */
.page-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 10, 10, 0.92);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.page-nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.page-nav-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-back {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: color var(--transition);
}

.nav-back:hover {
    color: var(--gold);
}

.nav-crumb {
    color: var(--text-muted);
    font-size: 12px;
}

.nav-crumb .sep {
    margin: 0 6px;
    color: var(--border-light);
}

.nav-crumb .current {
    color: var(--gold);
}

/* 子页面Hero */
.page-hero {
    padding: 140px 24px 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 70% 50% at 50% 0%, rgba(201, 169, 110, 0.06), transparent);
    pointer-events: none;
}

.page-hero-icon {
    width: 64px;
    height: 64px;
    background: var(--gold-glow);
    border: 1px solid var(--gold-dark);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: var(--gold);
    font-size: 28px;
}

.page-hero h1 {
    font-family: var(--font-display);
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.page-hero .subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto;
    line-height: 1.7;
}

/* 子导航（板块内功能切换） */
.sub-nav {
    display: flex;
    justify-content: center;
    gap: 4px;
    padding: 0 24px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.sub-nav a {
    padding: 10px 20px;
    font-size: 13px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 6px;
    transition: all var(--transition);
    border: 1px solid transparent;
    letter-spacing: 0.5px;
}

.sub-nav a:hover {
    color: var(--text-primary);
    background: var(--bg-card);
}

.sub-nav a.active {
    color: var(--gold);
    background: var(--gold-glow);
    border-color: var(--gold-dark);
}

/* 功能展示区 */
.feature-showcase {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px 80px;
}

.showcase-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 32px;
}

.showcase-header {
    padding: 24px 28px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.showcase-header h3 {
    font-size: 16px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
}

.showcase-header .tag {
    font-size: 11px;
    padding: 3px 10px;
    border-radius: 10px;
    background: rgba(201, 169, 110, 0.1);
    color: var(--gold);
    letter-spacing: 1px;
}

.showcase-header .tag.dev {
    background: rgba(231, 76, 60, 0.1);
    color: var(--red);
}

.showcase-body {
    padding: 28px;
}

/* 上传工作区（通用） */
.work-area {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    min-height: 320px;
}

.work-upload {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 40px;
    text-align: center;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition);
    min-height: 280px;
}

.work-upload:hover {
    border-color: var(--gold-dark);
    background: var(--gold-glow);
}

.work-upload .upload-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-elevated);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.work-result {
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 40px;
    color: var(--text-muted);
    min-height: 280px;
}

.work-result .result-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-card);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 功能说明 */
.feature-desc {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-top: 24px;
}

.feature-desc-item {
    padding: 20px;
    background: var(--bg-elevated);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.feature-desc-item h4 {
    font-size: 13px;
    color: var(--gold);
    margin-bottom: 6px;
    font-weight: 500;
}

.feature-desc-item p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 开发中遮罩 */
.dev-overlay {
    position: relative;
}

.dev-overlay::after {
    content: '即将上线';
    position: absolute;
    inset: 0;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 20px;
    color: var(--gold);
    letter-spacing: 4px;
    border-radius: var(--radius-lg);
}

/* 板块入口网格（首页用） */
.section-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-decoration: none;
    color: var(--text-primary);
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: relative;
    overflow: hidden;
}

.section-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--gold-dark), transparent);
    opacity: 0;
    transition: opacity var(--transition);
}

.section-card:hover {
    border-color: var(--gold-dark);
    transform: translateY(-4px);
}

.section-card:hover::before {
    opacity: 1;
}

.section-card-icon {
    width: 48px;
    height: 48px;
    background: var(--gold-glow);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gold);
    font-size: 22px;
}

.section-card h3 {
    font-size: 17px;
    font-weight: 500;
    letter-spacing: 1px;
}

.section-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.section-card .card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: auto;
}

.section-card .card-tag {
    font-size: 11px;
    padding: 3px 10px;
    border-radius: 10px;
    background: var(--bg-elevated);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
}

.section-card.disabled {
    opacity: 0.5;
    pointer-events: none;
}

.section-card.disabled::after {
    content: '开发中';
    position: absolute;
    top: 12px;
    right: 12px;
    font-size: 10px;
    padding: 2px 8px;
    border-radius: 8px;
    background: rgba(231, 76, 60, 0.15);
    color: var(--red);
    letter-spacing: 1px;
}

/* 底部功能导航 */
.feature-footer {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px 80px;
}

.feature-footer h3 {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    letter-spacing: 1px;
    font-weight: 400;
}

.feature-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 10px;
}

.feature-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-primary);
    font-size: 14px;
    transition: all var(--transition);
}

.feature-link:hover {
    border-color: var(--gold-dark);
    color: var(--gold);
}

.feature-link .fl-icon {
    width: 32px;
    height: 32px;
    background: var(--bg-elevated);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gold);
    font-size: 14px;
    flex-shrink: 0;
}

/* AI智能体页特殊样式 */
.agent-showcase {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 24px 80px;
}

.agent-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px;
    margin-bottom: 24px;
}

.agent-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
    font-weight: 500;
}

.agent-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.agent-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-top: 24px;
}

.agent-feature-item {
    padding: 20px;
    background: var(--bg-elevated);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.agent-feature-item h4 {
    font-size: 14px;
    color: var(--gold);
    margin-bottom: 8px;
}

.agent-feature-item p {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* 响应式 */
@media (max-width: 768px) {
    .section-grid {
        grid-template-columns: 1fr;
    }
    
    .work-area {
        grid-template-columns: 1fr;
    }
    
    .sub-nav {
        gap: 2px;
    }
    
    .sub-nav a {
        padding: 8px 14px;
        font-size: 12px;
    }
}

/* ============================================
   上传组件样式
   ============================================ */
.upload-multi {
    margin-bottom: 24px;
}

.upload-slots {
    display: grid;
    gap: 16px;
    margin-bottom: 12px;
}

.upload-slots.slots-1 {
    grid-template-columns: 1fr;
}

.upload-slots.slots-2 {
    grid-template-columns: 1fr 1fr;
}

.upload-slots.slots-3 {
    grid-template-columns: 1fr 1fr 1fr;
}

.upload-slots.slots-4 {
    grid-template-columns: repeat(4, 1fr);
}

.upload-slots.slots-5 {
    grid-template-columns: repeat(5, 1fr);
}

.upload-slot {
    position: relative;
    border: 2px dashed var(--border-color);
    border-radius: var(--radius);
    min-height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition);
    overflow: hidden;
}

.upload-slot:hover, .upload-slot.dragover {
    border-color: var(--gold-dark);
    background: var(--gold-glow);
}

.upload-slot.has-file {
    border-style: solid;
    border-color: var(--gold-dark);
}

.slot-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    text-align: center;
    padding: 20px;
}

.slot-placeholder svg {
    opacity: 0.4;
}

.slot-label {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.slot-hint {
    font-size: 11px;
    color: var(--text-muted);
}

.slot-preview {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: calc(var(--radius) - 2px);
}

.slot-remove {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 28px;
    height: 28px;
    background: rgba(10, 10, 10, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-primary);
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    transition: all var(--transition);
}

.slot-remove:hover {
    background: var(--red);
    border-color: var(--red);
}

.upload-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    color: var(--text-muted);
}

/* 操作按钮区 */
.action-bar {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

/* 输出区 */
.output-area {
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    min-height: 280px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 40px;
    color: var(--text-muted);
    text-align: center;
}

.output-area.has-output {
    padding: 16px;
}

.output-placeholder-icon {
    width: 56px;
    height: 56px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
}

.output-label {
    font-size: 13px;
    color: var(--text-muted);
}

.output-image {
    max-width: 100%;
    max-height: 400px;
    border-radius: var(--radius);
    object-fit: contain;
}

@media (max-width: 768px) {
    .upload-slots.slots-3,
    .upload-slots.slots-4,
    .upload-slots.slots-5 {
        grid-template-columns: 1fr 1fr;
    }
}