/* ============================================
   FullPage Scroll Styles
   全屏滚动核心样式
   ============================================ */

/* ------------------------------------------
   全屏滚动容器
   ------------------------------------------ */
.fullpage-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.fp-section {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg-primary);
    overflow: hidden;
}

.fp-section.fp-auto-height {
    height: auto;
    min-height: 100vh;
    padding: var(--space-4xl) 0;
}

/* 背景层 */
.fp-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

/* 内容层 */
.fp-content {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl);
}

.fp-auto-height .fp-content {
    height: auto;
}

/* ------------------------------------------
   导航指示器
   ------------------------------------------ */
.fp-nav {
    position: fixed;
    right: var(--space-xl);
    top: 50%;
    transform: translateY(-50%);
    z-index: var(--z-fixed);
}

.fp-nav-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.fp-nav-link {
    display: block;
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    background: var(--color-text-muted);
    opacity: 0.4;
    transition: all var(--transition-base);
    position: relative;
}

.fp-nav-link::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    border: 2px solid var(--color-accent);
    opacity: 0;
    transition: all var(--transition-base);
}

.fp-nav-link:hover {
    opacity: 0.8;
    transform: scale(1.2);
}

.fp-nav-link.active {
    background: var(--color-accent);
    opacity: 1;
    transform: scale(1.3);
}

.fp-nav-link.active::before {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.5;
}

/* ------------------------------------------
   Hero Section
   ------------------------------------------ */
.hero-bg-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../image/游戏库背景壁纸.png') center center / cover no-repeat;
    transform: scale(1.1);
    transition: transform 0.1s linear;
}

.hero-bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at center, transparent 0%, var(--color-bg-primary) 100%),
        linear-gradient(180deg, rgba(10, 15, 26, 0.7) 0%, rgba(10, 15, 26, 0.9) 100%);
}

.hero-bg-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(56, 189, 248, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 80% 20%, rgba(56, 189, 248, 0.06) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(56, 189, 248, 0.04) 0%, transparent 50%);
    animation: particleFloat 20s ease-in-out infinite;
}

@keyframes particleFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(-10px, -15px) rotate(1deg); }
    50% { transform: translate(5px, -10px) rotate(-1deg); }
    75% { transform: translate(-5px, 5px) rotate(0.5deg); }
}

/* Hero 内容 */
.hero-content {
    text-align: center;
    max-width: 800px;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 6rem);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--space-md);
    white-space: nowrap;
}

.title-line {
    display: inline;
}

.title-line.accent {
    color: var(--color-accent);
    text-shadow: 0 0 40px rgba(56, 189, 248, 0.4);
}

.hero-subtitle {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
    letter-spacing: 0.2em;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    margin-bottom: var(--space-3xl);
}

/* 下载区域 */
.download-section {
    margin-top: var(--space-2xl);
}

.download-podium {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xl);
}

.podium-item.primary {
    width: 100%;
    max-width: 280px;
    display: flex;
    justify-content: center;
}

.podium-item.primary .download-card {
    width: 100%;
    justify-content: center;
    height: 72px;
}

.podium-secondary {
    display: flex;
    gap: var(--space-lg);
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
    max-width: 500px;
}

.podium-secondary .podium-item {
    flex: 1;
    min-width: 200px;
}

.download-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-xl);
    background: var(--color-bg-card);
    backdrop-filter: blur(var(--blur-md));
    -webkit-backdrop-filter: blur(var(--blur-md));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    width: 100%;
    justify-content: center;
}

.download-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.download-card.taptap {
    padding: var(--space-lg);
}

.download-card.taptap img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}



.download-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.download-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.download-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.download-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.download-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.podium-secondary .download-name {
    font-size: var(--font-size-base);
}

/* 滚动提示 */
.scroll-hint {
    position: absolute;
    bottom: var(--space-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-muted);
    animation: bounce 2s infinite;
}

.scroll-text {
    font-size: var(--font-size-sm);
    letter-spacing: 0.1em;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
}

.scroll-arrow svg {
    width: 100%;
    height: 100%;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ------------------------------------------
   Section 通用样式
   ------------------------------------------ */
.section-bg-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-bg-primary);
    background-image: 
        radial-gradient(ellipse at 0% 0%, rgba(56, 189, 248, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 100% 100%, rgba(56, 189, 248, 0.05) 0%, transparent 50%);
    z-index: 0;
}

.section-bg-gradient.alt {
    background-image: 
        radial-gradient(ellipse at 100% 0%, rgba(56, 189, 248, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 0% 100%, rgba(56, 189, 248, 0.05) 0%, transparent 50%);
}

.section-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-3xl);
}

.section-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-subtle);
    border-radius: var(--radius-md);
}

.section-icon img {
    width: 28px;
    height: 28px;
    filter: brightness(0) saturate(100%) invert(65%) sepia(85%) saturate(1500%) hue-rotate(175deg);
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

/* ------------------------------------------
   Intro Section
   ------------------------------------------ */
.intro-content {
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
}

.intro-card {
    padding: var(--space-3xl);
}

.intro-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--space-xl);
}

.intro-card {
    background: var(--color-bg-card);
    backdrop-filter: blur(var(--blur-md));
    -webkit-backdrop-filter: blur(var(--blur-md));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    transition: all var(--transition-base);
}

.intro-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-lg);
}

.card-header h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-accent);
    margin-bottom: var(--space-lg);
}

.card-body p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    line-height: var(--line-height-relaxed);
}

.card-body p:last-child {
    margin-bottom: 0;
}

/* 警告框 */
.warning-box {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    background: var(--color-warning-bg);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-top: var(--space-lg);
    color: var(--color-warning);
}

.warning-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.warning-icon img {
    width: 100%;
    height: 100%;
    filter: brightness(0) saturate(100%) invert(60%) sepia(95%) saturate(500%) hue-rotate(0deg);
}

/* 信息框 */
.info-box {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    background: var(--color-info-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-top: var(--space-lg);
    color: var(--color-info);
}

.info-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.info-icon img {
    width: 100%;
    height: 100%;
    filter: brightness(0) saturate(100%) invert(65%) sepia(85%) saturate(1500%) hue-rotate(175deg);
}

/* 快捷键 */
.shortcut-box {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-top: var(--space-md);
}

.shortcut-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.shortcut-key {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
    padding: 0 var(--space-sm);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-family-mono);
    font-size: var(--font-size-sm);
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
}

.shortcut-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* ------------------------------------------
   Unlock Section (100%进度)
   ------------------------------------------ */
.unlock-content {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 90%;
    max-width: 900px;
    margin: 0 auto;
}

.unlock-card {
    background: var(--color-bg-card);
    backdrop-filter: blur(var(--blur-md));
    -webkit-backdrop-filter: blur(var(--blur-md));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    width: 100%;
    transition: all var(--transition-base);
}

.unlock-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-lg);
}

.unlock-desc {
    font-size: var(--font-size-lg);
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
    text-align: left;
}

.unlock-method {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-md);
    text-align: left;
}

/* ------------------------------------------
   Features Section
   ------------------------------------------ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.feature-card {
    background: var(--color-bg-card);
    backdrop-filter: blur(var(--blur-md));
    -webkit-backdrop-filter: blur(var(--blur-md));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    text-align: center;
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.feature-icon-wrapper {
    width: 72px;
    height: 72px;
    margin: 0 auto var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-subtle);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.feature-card:hover .feature-icon-wrapper {
    transform: scale(1.1);
    background: rgba(56, 189, 248, 0.2);
}

.feature-icon-wrapper img {
    width: 36px;
    height: 36px;
    filter: brightness(0) saturate(100%) invert(65%) sepia(85%) saturate(1500%) hue-rotate(175deg);
}

.feature-card h3 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.feature-card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

/* ------------------------------------------
   Requirements Section
   ------------------------------------------ */
.requirements-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

.requirement-card {
    background: var(--color-bg-card);
    backdrop-filter: blur(var(--blur-md));
    -webkit-backdrop-filter: blur(var(--blur-md));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    position: relative;
    transition: all var(--transition-base);
}

.requirement-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-lg);
}

.requirement-card.recommended {
    border-color: rgba(56, 189, 248, 0.3);
}

.requirement-card.recommended:hover {
    border-color: var(--color-accent);
}

.card-badge {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    padding: var(--space-xs) var(--space-md);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.card-badge.recommended {
    background: var(--color-accent);
    color: var(--color-bg-primary);
}

.requirement-card h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-xl);
    padding-top: var(--space-sm);
}

.requirement-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.requirement-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border);
}

.requirement-list li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.req-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.req-value {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

/* ------------------------------------------
   Footer Section
   ------------------------------------------ */
#footer.fp-section {
    display: flex;
    align-items: center;
    justify-content: center;
}

#footer .fp-content {
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--space-3xl) var(--space-xl);
}

#footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    height: 100%;
    width: 100%;
}

.footer-hero {
    text-align: center;
    margin-bottom: auto;
    margin-top: auto;
    padding: var(--space-5xl) 0 var(--space-2xl);
}

.footer-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
}

.footer-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.footer-desc {
    font-size: var(--font-size-base);
    color: var(--color-text-muted);
    margin-bottom: var(--space-xl);
}

.footer-social {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
    margin-top: var(--space-lg);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    min-width: 120px;
    background: var(--color-bg-card);
    backdrop-filter: blur(var(--blur-md));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.social-link:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-glow);
}

.social-link.taptap {
    padding: var(--space-md);
}

.social-link.taptap img {
    width: 100%;
    height: 100%;
    max-width: 48px;
    max-height: 48px;
    object-fit: contain;
}

.social-link img {
    width: 24px;
    height: 24px;
}

.social-link span {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.main-footer {
    width: 100%;
    background: transparent;
}

.footer-content {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: var(--space-3xl);
    align-items: start;
    padding-bottom: var(--space-2xl);
    border-bottom: 1px solid var(--color-border);
}

.footer-brand h2 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-xs);
}

.footer-brand p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.footer-info {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md) var(--space-xl);
}

.info-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.info-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.info-value {
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    transition: color var(--transition-fast);
}

.info-value:hover {
    color: var(--color-accent);
}

.footer-links {
    display: flex;
    align-items: center;
}

.taptap-link {
    display: block;
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.taptap-link:hover {
    background: var(--color-bg-tertiary);
    transform: scale(1.05);
}

.taptap-link img {
    height: 40px;
    width: auto;
}

.footer-bottom {
    padding-top: var(--space-xl);
    text-align: center;
}

.footer-bottom p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-xs);
}

.footer-bottom p:last-child {
    margin-bottom: 0;
    font-size: var(--font-size-xs);
}