/* ==========================================
   Pixel Art Main Stylesheet
   棉雲/WTGM Official Site
   ========================================== */

/* ===== Reset & Base Styles ===== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
}

body {
    font-family: var(--font-pixel-ja);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    background: var(--color-bg-dark);
    color: var(--color-text-primary);
    min-height: 100vh;
    overflow-x: hidden;

    /* 保存防止対策 */
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    -webkit-user-drag: none;
    -webkit-touch-callout: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    pointer-events: none;
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
}

a {
    color: var(--color-accent-beige);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-text-primary);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    transition: all var(--transition-base);
}

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
}

/* ===== Accessibility ===== */

/* Skip Link */
.skip-link {
    position: absolute;
    top: -100px;
    left: var(--space-2);
    background: var(--color-accent-beige);
    color: var(--color-primary);
    padding: var(--space-2) var(--space-3);
    text-decoration: none;
    font-family: var(--font-pixel-ja);
    font-size: var(--font-size-sm);
    border: var(--border-width-thick) var(--border-style) var(--color-primary);
    z-index: calc(var(--z-modal) + 1);
    transition: top var(--transition-fast);
    /* Ensure it's completely hidden */
    opacity: 0;
    pointer-events: none;
}

.skip-link:focus {
    top: var(--space-2);
    outline: var(--border-width-thick) var(--border-style) var(--color-primary);
    outline-offset: 2px;
    opacity: 1;
    pointer-events: auto;
}

/* Focus Styles - Consistent and Visible */
a:focus,
button:focus,
[tabindex]:focus {
    outline: var(--border-width-thick) var(--border-style) var(--color-accent-beige);
    outline-offset: 2px;
}

/* Input elements get a more subtle focus style - border color change */
input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-accent-beige);
}

/* Focus visible for keyboard navigation only */
a:focus:not(:focus-visible),
button:focus:not(:focus-visible),
input:focus:not(:focus-visible),
select:focus:not(:focus-visible),
textarea:focus:not(:focus-visible) {
    outline: none;
}

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
    outline: var(--border-width-thick) var(--border-style) var(--color-accent-beige);
    outline-offset: 2px;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: none;
    border-color: var(--color-accent-beige);
}

/* ===== Header / Navigation ===== */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: var(--color-primary);
    border-bottom: var(--border-width-thick) var(--border-style) var(--color-border-light);
}

.header-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--space-2) var(--space-3);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-logo {
    font-family: var(--font-pixel-ja);
    font-size: var(--font-size-lg);
    color: var(--color-text-primary);
    text-decoration: none;
    transition: opacity var(--transition-fast);
    display: flex;
    flex-direction: column;
    gap: 4px;
    align-items: center;
}

.site-logo:hover {
    opacity: 0.8;
    color: var(--color-text-primary);
}

.site-logo .logo-en {
    font-family: var(--font-pixel-en);
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    text-align: center;
}

/* Navigation */
.main-nav {
    display: flex;
    gap: var(--space-2);
    align-items: center;
}

.nav-link {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    padding: var(--space-1);
    border: var(--border-width) var(--border-style) transparent;
    transition: all var(--transition-fast);
    position: relative;
}

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

.nav-link.active {
    color: var(--color-accent-beige);
    border-color: var(--color-border-accent);
}

.nav-link.highlight {
    background: var(--color-secondary);
    color: var(--color-text-primary);
    border-color: var(--color-border-light);
}

.nav-link.highlight:hover {
    background: var(--color-secondary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-pixel-sm);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--space-2);
    cursor: pointer;
    /* Minimum tap target size: 44x44px */
    min-width: 44px;
    min-height: 44px;
    justify-content: center;
    align-items: center;
    transition: all var(--transition-base);
    background: transparent;
    border: var(--border-width) var(--border-style) transparent;
}

.mobile-menu-toggle:hover {
    background: var(--color-bg-card);
    border-color: var(--color-border-light);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 4px;
    background: var(--color-text-primary);
    transition: all var(--transition-base);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 17, 25, 0.9);
    z-index: calc(var(--z-fixed) - 1);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.mobile-menu-overlay.active {
    display: block;
    opacity: 1;
}

/* Prevent body scroll when menu is open */
body.menu-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
}

/* ===== Main Content ===== */

.main-content {
    margin-top: 80px;
    min-height: calc(100vh - 80px);
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-3);
}

.container-sm {
    max-width: 768px;
}

.container-lg {
    max-width: 1536px;
}

/* ===== Section Styles ===== */

.section {
    padding: var(--space-10) 0;
}

.section-title {
    font-family: var(--font-pixel-ja);
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-6);
    text-align: center;
    position: relative;
    padding: var(--space-2) 0;
}

.section-title::before,
.section-title::after {
    content: '+';
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-border-accent);
    font-size: var(--font-size-xl);
}

.section-title::before {
    left: 0;
}

.section-title::after {
    right: 0;
}

.section-title .title-en {
    font-family: var(--font-pixel-en);
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    display: block;
    margin-top: var(--space-1);
    text-transform: uppercase;
}

.section-subtitle {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    text-align: center;
    margin-bottom: var(--space-4);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== Card Styles ===== */

.card {
    background: var(--color-bg-card);
    border: var(--border-width) var(--border-style) var(--color-border-light);
    padding: var(--space-3);
    transition: all var(--transition-base);
    position: relative;
}

.card:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-border-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-pixel-md);
}

.card-image {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    margin-bottom: var(--space-2);
    border: var(--border-width) var(--border-style) var(--color-border-dark);
}

.card-title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-1);
}

.card-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-2);
}

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

/* ===== Button Styles ===== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-family: var(--font-pixel-en);
    border: var(--border-width) var(--border-style) var(--color-border-light);
    transition: all var(--transition-base);
    cursor: pointer;
    text-decoration: none;
    background: var(--color-bg-card);
    color: var(--color-text-primary);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-pixel-sm);
    border-color: var(--color-border-accent);
    color: var(--color-text-primary);
}

.btn-primary {
    background: var(--color-secondary);
    border-color: var(--color-border-light);
    color: var(--color-text-primary);
}

.btn-primary:hover {
    background: var(--color-secondary-light);
    box-shadow: var(--shadow-pixel-md);
}

.btn-secondary {
    background: var(--color-bg-card);
    border-color: var(--color-border-dark);
}

.btn-secondary:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-border-light);
}

.btn-outline {
    background: transparent;
    border-color: var(--color-border-light);
}

.btn-outline:hover {
    background: var(--color-bg-card);
    border-color: var(--color-accent-beige);
}

.btn-lg {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-base);
}

/* ===== Pixel Decorative Frame ===== */

.pixel-decorative-frame {
    position: relative;
    padding: var(--space-4);
    border: var(--border-width) var(--border-style) var(--color-border-light);
}

/* Corner decorations */
.pixel-decorative-frame::before,
.pixel-decorative-frame::after {
    content: '';
    position: absolute;
    width: 32px;
    height: 32px;
    border: var(--border-width-thick) var(--border-style) var(--color-border-accent);
}

.pixel-decorative-frame::before {
    top: -2px;
    left: -2px;
    border-right: none;
    border-bottom: none;
}

.pixel-decorative-frame::after {
    bottom: -2px;
    right: -2px;
    border-left: none;
    border-top: none;
}

/* ===== Footer ===== */

.site-footer {
    background: var(--color-bg-darker);
    border-top: var(--border-width-thick) var(--border-style) var(--color-border-light);
    padding: var(--space-6) 0 var(--space-3);
    margin-top: var(--space-12);
}

.footer-content {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-3);
    text-align: center;
}

.footer-logo {
    font-family: var(--font-pixel-ja);
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-3);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
    flex-wrap: wrap;
}

.footer-link {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    padding: var(--space-1);
    border: var(--border-width) var(--border-style) transparent;
}

.footer-link:hover {
    color: var(--color-text-primary);
    border-color: var(--color-border-dark);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.social-link {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-card);
    border: var(--border-width) var(--border-style) var(--color-border-dark);
    transition: all var(--transition-base);
}

.social-link:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-border-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-pixel-sm);
}

.copyright {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    font-family: var(--font-pixel-en);
}

/* ===== Responsive Design ===== */

@media (max-width: 1024px) {
    .main-nav {
        display: none;
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--color-primary);
        flex-direction: column;
        padding: var(--space-3);
        gap: var(--space-2);
        border-bottom: var(--border-width-thick) var(--border-style) var(--color-border-light);
        z-index: var(--z-fixed);
        /* Animation properties */
        opacity: 0;
        transform: translateY(-8px);
        transition: opacity var(--transition-base), transform var(--transition-base);
    }

    .main-nav.active {
        display: flex;
        opacity: 1;
        transform: translateY(0);
    }

    /* Ensure all nav links have adequate tap targets */
    .nav-link {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
        width: 100%;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }

    .section-title {
        font-size: var(--font-size-2xl);
    }
}

@media (max-width: 640px) {
    .header-container {
        padding: var(--space-2);
    }

    .site-logo {
        font-size: var(--font-size-base);
    }

    .section {
        padding: var(--space-6) 0;
    }

    .section-title {
        font-size: var(--font-size-xl);
    }

    .container {
        padding: 0 var(--space-2);
    }
}

/* ===== Animations ===== */

@keyframes pixelSlideIn {
    0% {
        opacity: 0;
        transform: translateX(-16px);
    }

    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pixelFloat {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-8px);
    }
}

@-webkit-keyframes pixelFloat {

    0%,
    100% {
        -webkit-transform: translateY(0);
        transform: translateY(0);
    }

    50% {
        -webkit-transform: translateY(-8px);
        transform: translateY(-8px);
    }
}

.pixel-slide-in {
    animation: pixelSlideIn var(--transition-base) forwards;
}

.pixel-float {
    animation: pixelFloat 2s steps(8) infinite;
    -webkit-animation: pixelFloat 2s steps(8) infinite;
}

/* Animation delays */
.animate-delay-1 {
    animation-delay: 0.1s;
}

.animate-delay-2 {
    animation-delay: 0.2s;
}

.animate-delay-3 {
    animation-delay: 0.3s;
}

.animate-delay-4 {
    animation-delay: 0.4s;
}

.animate-delay-5 {
    animation-delay: 0.5s;
}

/* ===== Utility Classes ===== */

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

/* Animation class for intersection observer */
.observe.visible {
    animation: pixelFadeIn var(--transition-base) forwards;
}

/* ===== AR Player Access Control ===== */
/* AR Playerリンクを初期状態で非表示（FOUC防止） */
/* JavaScriptでアクセス許可されている場合のみ表示 */
a[href*="ar-player.kumorarika.com"] {
    display: none !important;
}

/* アクセス許可時に表示するクラス */
a[href*="ar-player.kumorarika.com"].ar-access-allowed {
    display: inline-flex !important;
}

/* AR CTAセクションも初期非表示 */
.ar-cta-section {
    display: none !important;
}

.ar-cta-section.ar-access-allowed {
    display: block !important;
}