/* --- about.css : 統合レイアウト装甲 --- */

.about-page {
    background-color: var(--usn-white);
}

/* --- 帰還の一行 : 英語の最後の一枚、悪魔の握手 --- */
/* .homecoming-gate {
    text-align: center;
    padding: 5rem 5% 0;
    animation: homecoming-appear 2.2s ease-out forwards;
    opacity: 0;
} */

/* --- 灯台のレンズ : 回転する光の束 --- */
.homecoming-gate::before {
    content: "";
    position: absolute;
    inset: 0;
    background: conic-gradient(from 0deg at 50% 50%,
            transparent 0deg,
            rgba(255, 248, 210, 0.07) 2.5deg,
            rgba(255, 248, 210, 0.04) 5deg,
            transparent 7.5deg,
            transparent 360deg);
    z-index: 0;
    pointer-events: none;
    animation: lighthouse-sweep 9.5s linear infinite;
}

@keyframes lighthouse-sweep {
    0% {
        transform: rotate(-65deg);
        opacity: 0;
    }

    3% {
        opacity: 1;
    }

    28% {
        transform: rotate(65deg);
        opacity: 0.9;
    }

    33% {
        transform: rotate(65deg);
        opacity: 0;
    }

    100% {
        transform: rotate(-65deg);
        opacity: 0;
    }
}

/* ファーストビューをヘッダーに密着させる（common.cssの padding-top を上書き） */
.about-page .main-container {
    padding-top: 0;
}

/* --- 帰還の一行 : ファーストビュー・インパクト --- */
.homecoming-gate {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    overflow: hidden;
    position: relative;
    /* 夜の海：曇天の空 → 水平線 → 深海 */
    background:
        linear-gradient(
            to bottom,
            #0e0e14 0%,
            #1a1c2a 18%,
            #1c2235 32%,
            #152030 48%,
            #0a1a28 62%,
            #041220 78%,
            #020b18 100%
        );
    background-size: 100% 200%;
    animation: sea-swell 12s ease-in-out infinite;
}

/* 夜の海のうねり：ゆっくりとした波のような揺らぎ */
@keyframes sea-swell {
    0%   { background-position: 50% 0%; }
    50%  { background-position: 50% 35%; }
    100% { background-position: 50% 0%; }
}

.gate-content {
    animation: gate-fade-in 3s ease-out forwards;
}

/* --- ファーストビューの文字調整、とか　---*/
.homecoming-text {
    font-family: 'Courier New', monospace;
    font-size: 1.8rem;
    color: var(--usn-gold);
    letter-spacing: 0.35rem;
    font-style: italic;
    margin: 0;
    text-shadow: 0 0 15px rgba(197, 160, 89, 0.4);
    position: relative;
}

/* スクロールを促す小さなサイン */
.scroll-indicator {
    display: block;
    margin-top: 1rem;
    font-family: 'Courier New', monospace;
    font-size: 0.65rem;
    color: rgba(197, 160, 89, 0.5);
    letter-spacing: 0.2rem;
    animation: pulse 2s infinite;
}

@keyframes gate-fade-in {
    0% {
        opacity: 0;
        transform: scale(0.98);
        filter: blur(5px);
    }

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

@keyframes pulse {

    0%,
    100% {
        opacity: 0.3;
    }

    50% {
        opacity: 0.8;
    }
}

/* 続くセクションが唐突にならないよう調整 */
#greeting {
    padding-top: 100px;
}

/* --- ファーストビューBGMボタン --- */
.gate-bgm-area {
    margin-top: 2rem;
    text-align: center;
}

.gate-bgm-btn {
    display: inline-block;
    padding: 0.6rem 1.5rem;
    border: 1px solid rgba(197, 160, 89, 0.55);
    color: var(--usn-gold);
    font-family: 'Courier New', monospace;
    font-size: 0.78rem;
    letter-spacing: 0.12rem;
    text-decoration: none;
    transition: all 0.3s ease;
}

.gate-bgm-btn:hover {
    background: rgba(197, 160, 89, 0.10);
    border-color: var(--usn-gold);
    box-shadow: 0 0 14px rgba(197, 160, 89, 0.35);
}

/* --- Base --- */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 5%;
}

.about-section {
    padding: 80px 0;
}

.bg-navy {
    background-color: var(--usn-navy);
    color: white;
}

/* --- Section Titles --- */
.section-title {
    font-size: 1.8rem;
    margin-bottom: 40px;
    letter-spacing: 0.4rem;
    color: var(--usn-navy);
    border-left: 8px solid var(--usn-gold);
    padding-left: 20px;
}

.section-title.gold {
    color: var(--usn-gold);
}

/* --- GREETING --- */
.insanity-blast {
    text-align: center;
    margin-bottom: 50px;
}

.insanity-text {
    font-family: 'Sawarabi Mincho', serif;
    font-size: 1.6rem;
    color: var(--usn-navy);
    text-align: center;
}

.catchphrase {
    font-size: 1.4rem;
    color: var(--usn-gold);
    margin: 30px 0;
}

.niyari-container,
.passion-container {
    margin: 30px 0;
    text-align: center;
}

.img-niyari,
.img-mayuchan {
    width: 100%;
    max-width: 850px;
    height: auto;
    display: block;
    margin: 0 auto;
    box-shadow: 15px 15px 0px var(--usn-gold);
    border: 1px solid #ccc;
}

.profile-intro {
    font-size: 1.1rem;
    line-height: 2.2;
    max-width: 850px;
    margin: 0 auto;
}

/* --- DESIGN PHILOSOPHY --- */
.philosophy-content h4 {
    color: var(--usn-gold);
    margin-bottom: 25px;
    font-size: 1.4rem;
}

.philosophy-list {
    list-style: none;
    padding: 0;
}

.philosophy-list li {
    margin-bottom: 20px;
    padding-left: 30px;
    position: relative;
}

.philosophy-list li::before {
    content: "▶";
    position: absolute;
    left: 0;
    color: var(--usn-gold);
}

/* --- CREATIVE IMPULSE --- */
.manifesto-quote {
    font-family: 'Sawarabi Mincho', serif;
    font-size: 2rem;
    text-align: center;
    color: var(--usn-navy);
    padding: 60px 20px;
    background: #fff;
    border: 1px solid var(--usn-gold);
    margin: 40px 0;
}

.signature {
    text-align: right;
    color: var(--usn-gold);
    font-size: 1.2rem;
    margin-top: 20px;
}

/* --- TACTICAL HOBBIES --- */
.hobby-row {
    margin-bottom: 6rem;
    padding-top: 3rem;
    border-top: 1px solid rgba(197, 160, 89, 0.2);
}

.hobby-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.hobby-no {
    font-family: 'Courier New', monospace;
    font-size: 1.5rem;
    color: var(--usn-gold);
    border: 1px solid var(--usn-gold);
    padding: 0 10px;
}

.hobby-header h3 {
    font-family: 'Sawarabi Mincho', serif;
    font-size: 1.8rem;
    color: var(--usn-navy);
    margin: 0;
}

.hobby-content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
}

.lang-box {
    padding: 2rem;
    background: #fff;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    border-bottom: 4px solid #eee;
    line-height: 1.8;
}

.box-label {
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    color: #999;
    margin-bottom: 1rem;
    display: block;
    letter-spacing: 0.15rem;
}

/* 英語：ネイビーのアクセント */
.lang-box.en {
    border-left: 5px solid var(--usn-navy);
}

/* 日本語：ゴールドのアクセント */
.lang-box.jp {
    font-family: 'Sawarabi Mincho', serif;
    border-left: 5px solid var(--usn-gold);
    font-size: 0.95rem;
}

/* --- CREATIVE IMPULSE : 暗い、内省的なマニフェスト空間 --- */
.bg-impulse {
    background: linear-gradient(160deg, #0d1b2a 0%, #1a2535 100%);
    color: #dde3ec;
}

.bg-impulse .manifesto-quote {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(197, 160, 89, 0.5);
    color: #e8dcc8;
}

.bg-impulse .signature {
    color: var(--usn-gold);
    opacity: 0.85;
}

/* --- TACTICAL HOBBIES : ウォームな紙質感、エネルギーの場 --- */
.bg-hobbies {
    background-color: #f5f0e8;
    background-image:
        radial-gradient(rgba(197, 160, 89, 0.12) 1px, transparent 1px);
    background-size: 24px 24px;
}

.bg-hobbies .section-title {
    color: #3a2a10;
    border-left-color: var(--usn-gold);
}

.bg-hobbies .insanity-text {
    color: #4a3520;
}

.bg-hobbies .lang-box {
    background: rgba(255, 255, 255, 0.82);
}

/* --- STREET KINGDOM : クリッカブル画像リンク --- */
.visual-link-img {
    display: block;
    margin-top: 1.2rem;
}

.img-streetkingdom {
    width: 100%;
    max-width: 460px;
    height: auto;
    display: block;
    border: 1px solid rgba(197, 160, 89, 0.45);
    transition: transform 0.3s ease, box-shadow 0.3s ease, opacity 0.3s ease;
    /* 画像未読込時のプレースホルダー表示 */
    min-height: 60px;
    background: rgba(197, 160, 89, 0.07);
}

.img-streetkingdom:hover {
    transform: scale(1.02);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
    opacity: 0.9;
}

/* --- THE STRANGLERS : 公式バナー --- */
.img-stranglers-banner {
    width: 100%;
    max-width: 460px;
    height: auto;
    display: block;
    border: 1px solid rgba(197, 160, 89, 0.45);
    transition: transform 0.3s ease, box-shadow 0.3s ease, opacity 0.3s ease;
}

.img-stranglers-banner:hover {
    transform: scale(1.02);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
    opacity: 0.9;
}

/* ナビゲーション周りのフォント上書き */
.nav-link,
.navbar-brand,
header a {
    font-family: 'Montserrat', sans-serif !important;
}

/* --- Responsive --- */
@media (max-width: 850px) {
    .hobby-content-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .about-section {
        padding: 50px 0;
    }

    .manifesto-quote {
        font-size: 1.4rem;
    }
}

/* モバイルでのトドメの一撃調整 */
@media (max-width: 600px) {
    .homecoming-text {
        font-size: 1rem;
        /* スマホでは少し控えめに */
        letter-spacing: 0.2rem;
        /* 間隔も詰めて一行に収めるナリ */
    }
}