/* =========================================================
   Welcome Page Styles - ウェルカムページスタイル
   
   強化された視覚効果、アニメーション、およびインタラクションを含む
   ========================================================= */

/* --- 基本設定 --- */
:root {
    --welcome-bg-color: #fce412;
    --welcome-text-color: #1a1a1a;
    --welcome-transition-base: 0.3s cubic-bezier(0.23, 1, 0.32, 1);
    --welcome-transition-slow: 1s cubic-bezier(0.8, 0, 0.2, 1);
    --welcome-glow-color: rgba(252, 228, 18, 0.5);
}

.welcome-page {
    background-color: var(--welcome-bg-color);
    color: var(--welcome-text-color);
    font-family: 'Space Grotesk', sans-serif;
    overflow: hidden;
    cursor: none;
    height: 100vh;
    height: 100dvh;
    /* 動的ビューポートの高さ、モバイル最適化 */
    width: 100vw;
    width: 100dvw;
    /* 動的ビューポートの幅、モバイル最適化 */
    margin: 0;
    position: relative;
    -webkit-tap-highlight-color: transparent;
    /* モバイルでのクリックハイライトを削除 */
    touch-action: pan-x pan-y;
    /* タッチスクロールの最適化 */
}

/* =========================================
   0. 動的背景効果
   ========================================= */
.welcome-animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background: linear-gradient(135deg,
            var(--welcome-bg-color) 0%,
            #fff9b3 50%,
            var(--welcome-bg-color) 100%);
    background-size: 200% 200%;
    animation: welcome-gradientShift 15s ease infinite;
    opacity: 0.3;
    will-change: background-position;
    /* アニメーションパフォーマンスの最適化 */
    transform: translateZ(0);
    /* ハードウェアアクセラレーションを有効化 */
}

@keyframes welcome-gradientShift {

    0%,
    100% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }
}

/* パーティクル効果コンテナ */
.welcome-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
}

.welcome-particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    animation: welcome-float 20s infinite ease-in-out;
}

@keyframes welcome-float {

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

    10% {
        opacity: 1;
    }

    90% {
        opacity: 1;
    }

    100% {
        transform: translateY(-100vh) translateX(50px);
        opacity: 0;
    }
}

/* =========================================
   1. ローディング層 (強化版)
   ========================================= */
.welcome-loader-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 50;
    pointer-events: none;
}

.welcome-loader-panel {
    position: absolute;
    top: 0;
    width: 50%;
    height: 100%;
    background: #000;
    z-index: 2;
    transition: transform var(--welcome-transition-slow);
    will-change: transform;
    box-shadow: inset 0 0 100px rgba(252, 228, 18, 0.1);
}

.welcome-panel-left {
    left: 0;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.welcome-panel-right {
    right: 0;
    border-left: 1px solid rgba(255, 255, 255, 0.1);
}

.welcome-loading-line-wrap {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 6px;
    height: 100%;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
}

.welcome-v-bar {
    width: 100%;
    height: 0%;
    background: linear-gradient(to bottom,
            var(--welcome-bg-color),
            #fff9b3,
            var(--welcome-bg-color));
    box-shadow:
        0 0 30px var(--welcome-glow-color),
        0 0 60px var(--welcome-glow-color);
    transition: height 0.3s ease-out;
    will-change: height;
    position: relative;
    overflow: hidden;
}

.welcome-v-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
            transparent,
            rgba(255, 255, 255, 0.3),
            transparent);
    animation: welcome-shimmer 2s infinite;
}

@keyframes welcome-shimmer {
    0% {
        left: -100%;
    }

    100% {
        left: 100%;
    }
}

.welcome-loader-counter {
    position: absolute;
    top: 50%;
    left: calc(50% + 30px);
    transform: translateY(-50%);
    font-family: 'Oswald', sans-serif;
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--welcome-bg-color);
    z-index: 3;
    transition: opacity 0.3s;
    text-shadow: 0 0 20px var(--welcome-glow-color);
    letter-spacing: 0.1em;
}

.welcome-split-open .welcome-panel-left {
    transform: translateX(-100%);
}

.welcome-split-open .welcome-panel-right {
    transform: translateX(100%);
}

.welcome-fade-out {
    opacity: 0;
    transition: opacity 0.5s ease-out;
}

/* =========================================
   2. マーキー (強化版)
   ========================================= */
.welcome-marquee-container {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    transform: translateY(-50%) rotate(-5deg);
    z-index: 0;
    opacity: 0.08;
    pointer-events: none;
    white-space: nowrap;
    overflow: hidden;
    display: block;
    mask-image: linear-gradient(to right,
            transparent,
            black 20%,
            black 80%,
            transparent);
}

@media (max-width: 768px) {
    .welcome-marquee-container {
        display: none;
    }
}

.welcome-marquee-content {
    display: inline-block;
    font-family: 'Oswald', 'Noto Sans JP', sans-serif;
    font-weight: 900;
    font-size: 15vh;
    text-transform: uppercase;
    animation: welcome-scrollText 25s linear infinite;
    will-change: transform;
    background: linear-gradient(90deg,
            var(--welcome-text-color),
            rgba(0, 0, 0, 0.5),
            var(--welcome-text-color));
    background-size: 200% 100%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: welcome-scrollText 25s linear infinite,
        welcome-textGradient 5s ease infinite;
}

@keyframes welcome-scrollText {
    from {
        transform: translateX(0);
    }

    to {
        transform: translateX(-50%);
    }
}

@keyframes welcome-textGradient {

    0%,
    100% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }
}

/* =========================================
   3. メインコンテンツエリア (強化版)
   ========================================= */
.welcome-hero {
    position: relative;
    z-index: 10;
    height: 100%;
    min-height: -webkit-fill-available;
    /* iOS Safari 対応 */
    max-height: 100vh;
    /* ビューポートを超えないようにする */
    display: flex;
    flex-direction: column;
    justify-content: center;
    /* 垂直中央揃え */
    align-items: center;
    /* 水平中央揃え */
    opacity: 0;
    transform: scale(0.95) translateZ(0);
    /* ハードウェアアクセラレーションを有効化 */
    transition: opacity 1s cubic-bezier(0.19, 1, 0.22, 1), transform 1s cubic-bezier(0.19, 1, 0.22, 1);
    will-change: opacity, transform;
    gap: 0.3rem;
    /* 間隔を縮小 */
    padding: 1.5rem 1rem;
    /* パディングを縮小 */
    contain: layout style paint;
    /* CSS containmentによるパフォーマンス最適化 */
    overflow-y: auto;
    /* コンテンツが多い場合はスクロールを許可 */
    overflow-x: hidden;
    /* 修正：水平スクロールバーの表示を防止 */
    -webkit-overflow-scrolling: touch;
    box-sizing: border-box;
    /* パディングを高さに含める */
}

.welcome-brand-logo {
    width: 350px;
    max-width: 65vw;
    mix-blend-mode: multiply;
    transform: translateY(20px) scale(0.9);
    transition: all 1.5s cubic-bezier(0.19, 1, 0.22, 1);
    will-change: transform;
    margin-bottom: 0.3rem;
    /* 下部マージンを縮小 */
    flex-shrink: 0;
    /* 圧縮を防止 */
    animation: welcome-logoFallbackReveal 2s ease-out 2s forwards;
    animation-play-state: running;
    display: block;
}

.welcome-logo-reveal {
    transform: translateY(0) scale(1) !important;
    animation: welcome-logoPulse 3s ease-in-out infinite;
}

@keyframes welcome-logoPulse {

    0%,
    100% {
        transform: scale(1);
        filter: drop-shadow(0 0 0px rgba(0, 0, 0, 0));
    }

    50% {
        transform: scale(1.02);
        filter: drop-shadow(0 0 20px rgba(0, 0, 0, 0.1));
    }
}

@keyframes welcome-logoFallbackReveal {
    0% {
        transform: translateY(20px) scale(0.9);
        opacity: 0.9;
    }

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

/* テキスト装飾レイアウト - タイプライター効果 */
.welcome-hero-text {
    margin-top: 1rem;
    /* 上部マージンを縮小 */
    margin-bottom: 0.3rem;
    /* 下部マージンを縮小 */
    text-transform: uppercase;
    letter-spacing: 0.5em;
    font-size: 1rem;
    font-weight: 700;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease 0.5s, transform 0.8s ease 0.5s;
    position: relative;
    overflow: hidden;
    /* 修正：疑似要素が境界を超えて水平スクロールバーが表示されるのを防止 */
    text-align: center;
    /* テキスト中央揃え */
    line-height: 1.7;
    /* 行高を縮小 */
    word-spacing: 0.4em;
    max-width: 95%;
    margin-left: auto;
    /* 水平中央揃え */
    margin-right: auto;
    /* 水平中央揃え */
    padding: 0 1.5rem;
    flex-shrink: 0;
    /* 圧縮を防止 */
    width: 100%;
    /* 幅を確保 */
    box-sizing: border-box;
    /* パディングを幅に含める */
}

.welcome-hero-text.show {
    opacity: 1;
    transform: translateY(0);
}

/* タイプライター効果 */
.welcome-hero-text.typing::after {
    content: '|';
    animation: welcome-blink 1s infinite;
    margin-left: 2px;
}

@keyframes welcome-blink {

    0%,
    50% {
        opacity: 1;
    }

    51%,
    100% {
        opacity: 0;
    }
}

.welcome-enter-btn {
    margin-top: 1.2rem;
    /* 上部マージンを縮小 */
    margin-bottom: 0.3rem;
    /* 下部マージンを縮小 */
    padding: 16px 42px;
    border: 2px solid black;
    background: transparent;
    text-transform: uppercase;
    font-weight: bold;
    font-size: 1rem;
    cursor: none;
    position: relative;
    overflow: hidden;
    transition: all var(--welcome-transition-base);
    opacity: 0;
    animation: welcome-fadeInUp 1s forwards 1.2s;
    text-decoration: none;
    color: inherit;
    display: inline-block;
    /* 中央揃えのためにinline-blockを維持 */
    letter-spacing: 0.15em;
    flex-shrink: 0;
    /* 圧縮を防止 */
    text-align: center;
    /* ボタンテキスト中央揃え */
}

.welcome-enter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: black;
    transition: left 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    z-index: -1;
}

.welcome-enter-btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.welcome-enter-btn:focus-visible {
    outline: 2px solid var(--welcome-text-color);
    outline-offset: 4px;
}

.welcome-enter-btn:hover,
.welcome-enter-btn:focus {
    color: var(--welcome-bg-color);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.welcome-enter-btn:hover::before,
.welcome-enter-btn:focus::before {
    left: 0;
}

.welcome-enter-btn:active::after {
    width: 300px;
    height: 300px;
    transition: width 0.3s, height 0.3s;
}

/* リップル効果 */
.welcome-enter-btn {
    position: relative;
    overflow: hidden;
}

.welcome-enter-btn .ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.3);
    transform: scale(0);
    animation: welcome-ripple 0.6s ease-out;
    pointer-events: none;
}

@keyframes welcome-ripple {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 日付表示 */
.welcome-date {
    margin-top: 0.8rem;
    /* 上部マージンを縮小 */
    margin-bottom: 0.2rem;
    /* 下部マージンを縮小 */
    font-size: 0.8rem;
    letter-spacing: 0.4em;
    opacity: 0;
    animation: welcome-fadeInUp 1s forwards 1.5s;
    font-weight: 300;
    text-transform: uppercase;
    flex-shrink: 0;
    /* 圧縮を防止 */
    text-align: center;
    /* テキスト中央揃え */
    width: 100%;
    /* 幅を確保 */
}

/* HAL TOKYO 25 スタイル */
.welcome-tokyo-text,
.welcome-hero>div:last-child {
    font-size: 0.65rem !important;
    font-weight: 700 !important;
    letter-spacing: 0.6em !important;
    opacity: 0.65 !important;
    margin-top: 0.3rem;
    /* 上部マージンを縮小 */
    margin-bottom: 0;
    /* 下部マージンがないことを確認 */
    margin-left: auto !important;
    /* 水平中央揃え */
    margin-right: auto !important;
    /* 水平中央揃え */
    text-transform: uppercase;
    font-family: 'Space Grotesk', sans-serif;
    flex-shrink: 0;
    /* 圧縮を防止 */
    text-align: center !important;
    /* テキスト中央揃え */
    width: 100%;
    /* 幅を確保 */
    display: block;
    /* ブロックレベル要素であることを確認 */
}

/* =========================================
   4. 装飾要素 (強化版)
   ========================================= */
.welcome-cursor-dot {
    width: 12px;
    height: 12px;
    background: black;
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 100;
    transform: translate(-50%, -50%);
    will-change: left, top;
    transition: transform 0.1s ease-out;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
}

.welcome-cursor-outline {
    width: 50px;
    height: 50px;
    border: 2px solid black;
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 99;
    transform: translate(-50%, -50%);
    transition: transform 0.2s ease-out, width 0.2s ease-out, height 0.2s ease-out;
    will-change: left, top, transform;
}

.welcome-cursor-outline.hover {
    width: 80px;
    height: 80px;
    border-color: rgba(0, 0, 0, 0.5);
}

.welcome-grid-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(0, 0, 0, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -1;
    pointer-events: none;
    animation: welcome-gridMove 20s linear infinite;
}

@keyframes welcome-gridMove {
    0% {
        transform: translate(0, 0);
    }

    100% {
        transform: translate(50px, 50px);
    }
}

.welcome-magnetic-wrap {
    will-change: transform;
    transition: transform 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

/* 光彩効果 */
.welcome-glow {
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(252, 228, 18, 0.2), transparent 70%);
    pointer-events: none;
    z-index: 1;
    animation: welcome-glowPulse 4s ease-in-out infinite;
}

@keyframes welcome-glowPulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 0.3;
    }

    50% {
        transform: scale(1.2);
        opacity: 0.5;
    }
}

/* =========================================
   モバイルおよびレスポンシブ最適化
   ========================================= */

/* デスクトップ小ウィンドウ最適化 (最大 1440px) */
@media (max-width: 1440px) and (min-width: 1025px) {
    .welcome-hero {
        gap: 0.25rem;
        padding: 1.2rem 1rem;
    }

    .welcome-hero-text {
        margin-top: 0.8rem;
        line-height: 1.6;
    }

    .welcome-enter-btn {
        margin-top: 1rem;
    }

    .welcome-date {
        margin-top: 0.6rem;
    }
}

/* 小さな高さのウィンドウ最適化 (高さ700px未満のデスクトップ) */
@media (min-width: 769px) and (max-height: 700px) {
    .welcome-hero {
        gap: 0.2rem;
        padding: 1rem 1rem;
        justify-content: center;
        /* 中央揃えを維持 */
        align-items: center;
        /* 中央揃えを維持 */
    }

    .welcome-brand-logo {
        width: min(300px, 50vh);
        margin-bottom: 0.2rem;
    }

    .welcome-hero-text {
        margin-top: 0.5rem;
        margin-bottom: 0.2rem;
        font-size: 0.9rem;
        line-height: 1.5;
    }

    .welcome-enter-btn {
        margin-top: 0.8rem;
        margin-bottom: 0.2rem;
        padding: 14px 36px;
        font-size: 0.95rem;
    }

    .welcome-date {
        margin-top: 0.5rem;
        margin-bottom: 0.15rem;
        font-size: 0.75rem;
    }

    .welcome-hero>div:last-child {
        margin-top: 0.2rem !important;
        font-size: 0.6rem !important;
    }
}

/* タブレットデバイス (768px - 1024px) */
@media (max-width: 1024px) and (min-width: 769px) {
    .welcome-brand-logo {
        width: 300px;
    }

    .welcome-hero-text {
        font-size: 0.95rem;
        letter-spacing: 0.45em;
    }

    .welcome-enter-btn {
        padding: 15px 40px;
    }
}

/* モバイルデバイス (最大 768px) */
@media (max-width: 768px) {
    .welcome-page {
        cursor: auto;
    }

    .welcome-hero {
        padding: 1.5rem 1rem;
        gap: 0.4rem;
    }

    .welcome-brand-logo {
        width: min(240px, 55vw);
        margin-bottom: 0.3rem;
    }

    .welcome-hero-text {
        font-size: clamp(0.7rem, 3vw, 0.85rem);
        margin-top: 1.2rem;
        letter-spacing: 0.35em;
        word-spacing: 0.3em;
        padding: 0 1rem;
        line-height: 1.7;
    }

    .welcome-enter-btn {
        font-size: clamp(0.85rem, 3.5vw, 0.9rem);
        padding: 14px 32px;
        margin-top: 1.5rem;
        letter-spacing: 0.1em;
        touch-action: manipulation;
        /* タッチ応答の最適化 */
    }

    .welcome-date {
        font-size: clamp(0.65rem, 2.8vw, 0.75rem);
        letter-spacing: 0.3em;
        margin-top: 1.2rem;
    }

    .welcome-hero>div:last-child {
        font-size: clamp(0.55rem, 2.5vw, 0.6rem) !important;
        letter-spacing: 0.4em !important;
    }

    .welcome-loader-counter {
        font-size: clamp(1.5rem, 8vw, 1.8rem);
        left: calc(50% + 18px);
    }

    /* モバイルで複雑なアニメーションと効果を無効化 */
    .welcome-animated-bg {
        display: none;
    }

    .welcome-particles {
        display: none;
    }

    .welcome-cursor-dot,
    .welcome-cursor-outline {
        display: none;
    }

    .welcome-grid-bg {
        opacity: 0.5;
        animation-duration: 30s;
        /* アニメーション速度を遅くする */
    }

    .welcome-glow {
        display: none;
    }

    .welcome-marquee-container {
        display: none;
    }
}

/* 小画面スマートフォン (最大 480px) */
@media (max-width: 480px) {
    .welcome-hero {
        padding: 1rem 0.75rem;
        gap: 0.3rem;
    }

    .welcome-brand-logo {
        width: min(200px, 60vw);
    }

    .welcome-hero-text {
        font-size: clamp(0.65rem, 4vw, 0.75rem);
        letter-spacing: 0.3em;
        padding: 0 0.75rem;
        margin-top: 1rem;
    }

    .welcome-enter-btn {
        font-size: clamp(0.8rem, 4vw, 0.85rem);
        padding: 12px 28px;
        margin-top: 1.2rem;
    }

    .welcome-date {
        font-size: clamp(0.6rem, 3vw, 0.7rem);
        margin-top: 1rem;
    }

    .welcome-loader-counter {
        font-size: clamp(1.3rem, 9vw, 1.6rem);
        left: calc(50% + 15px);
    }
}

/* 超小画面デバイス (最大 360px) */
@media (max-width: 360px) {
    .welcome-hero-text {
        letter-spacing: 0.25em;
        word-spacing: 0.25em;
    }

    .welcome-enter-btn {
        padding: 11px 24px;
    }

    .welcome-date {
        letter-spacing: 0.25em;
    }
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {

    .welcome-marquee-content,
    .welcome-v-bar,
    .welcome-loader-panel,
    .welcome-brand-logo,
    .welcome-hero-text,
    .welcome-hero,
    .welcome-animated-bg,
    .welcome-grid-bg,
    .welcome-particle {
        animation: none !important;
        transition: none !important;
    }

    .welcome-brand-logo {
        filter: blur(0px) !important;
        transform: translateY(0) scale(1) !important;
        opacity: 1 !important;
    }

    .welcome-cursor-dot,
    .welcome-cursor-outline {
        display: none;
    }
}