/* 配色用テーマカラー一覧 */
:root {
    --color-bg: #0c1024;
    --color-primary: #4fa3ff;
    --color-secondary: #7b4bff;
    --color-accent: #00ff7f;
    --color-text: #ffffff;
    --color-section-a: #0f1b3d;
    --color-section-b: #070a18;

    --max-width: 960px;
}


/* レイアウト */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
}

body {
    background: var(--color-bg);
    color: var(--color-text);
    font-family: "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
    line-height: 1.7;
    font-weight: 600;
}

@media (max-width: 1050px) {
    body {
        padding-top: 60px;
    }
}

@media (max-width: 600px) {
    body {
        font-size: 80%;
    }

    .section-inner {
        padding: 0 16px;
    }

    .ticket-button {
        padding: 14px 0;
        font-size: 16px;
    }

    .news-item .date,
    .kikan,
    .sale,
    .map {
        font-size: 0.9em;
    }

    .cast-item img {
        width: 200px;
    }
}


section {
    width: 100%;
    padding: 80px 0;
}

.section-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 40px;
}

section:nth-of-type(odd) {
    background-color: var(--color-section-a);
}

section:nth-of-type(even) {
    background-color: var(--color-section-b);
}

.visually-hidden {
    position: absolute;
    width: 1;
    height: 1;
    overflow: hidden;
    clip: rect(0 0 0 0);
}


/* ヘッダー */
.header {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 2000;
    background: none;
    padding: 0;
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}


/* ハンバーガーボタン　*/
.hamburger {
    width: 44px;
    height: 44px;
    background: linear-gradient(
        135deg,
        var(--color-primary),
        var(--color-secondary)
    );
    border: none;
    cursor: pointer;

    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;

    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 3000;
}

.hamburger span {
    display: block;
    width: 18px;
    height: 2px;
    background: #ffffff;
    border-radius: 1px;
    margin: 0 auto;
}

.hamburger.is-open span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.hamburger.is-open span:nth-child(2) {
    opacity: 0;
}

.hamburger.is-open span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}


/* ナビゲーション */
.nav {
    position: fixed;
    inset: 0;
    background: radial-gradient(circle, #0f1b3d, #070a18);

    transform: translateX(-100%);
    transition: transform 0.4s ease;

    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.nav ul {
    padding: 0;
    list-style: none;
    text-align: center;
}

.nav li {
    margin: 24px 0;
}

.nav a {
    font-size: 2rem;
    color: var(--color-primary);
    text-decoration: none;
    letter-spacing: 0.2em;
    font-weight: bold;

    text-shadow: 
        0 0 8px rgba(79, 163, 255, 0.8),
        0 0 16px rgba(79, 163, 255, 0.6);
}

.nav a:hover {
    color: #ffffff;
    text-shadow:
        0 0 12px rgba(255, 255, 255, 0.9),
        0 0 24px rgba(79, 163, 255, 1);
}

.nav.is-open {
    transform: translateX(0);
}

.nav a::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: 0.3s;
}

.nav a:hover::after {
    width: 100%;
}


/* 広告用バナー */
.banner {
    display: block;
    background: linear-gradient(
        135deg,
        var(--color-primary),
        var(--color-secondary)
    );
    color: #ffffff;
    border: 2px solid rgba(255, 255, 255, 0.6);
    padding: 10px 16px;
    border-radius: 20px;
    text-align: center;
    text-decoration: none;
    transition: background-color 0.3s;
}

.banner a {
    color: inherit;
    text-decoration: none;
    font-weight: 600;
}

.banner:hover {
    opacity: 0.85;
}


/* メインビジュアル */
#hero {
    background-color: var(--color-bg);
    padding: 20px 0 20px;
}

.hero-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.hero-img {
    width: 100%;
    display: block;
}


/* 見出し */
section h2 {
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--color-primary);
    letter-spacing: 0.2em;
    position: relative;
}


/* あらすじ */
.story-pg {
    padding: 12px 16px;
    margin-bottom: 16px;
}

.story-closer {
    position: relative;
    padding-left: 2.5em;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-accent);

    text-shadow: 
        0 0 6px rgba(0, 255, 127, 0.6),
        0 0 12px rgba(0, 255, 127, 0.4);
}

.story-closer::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;

    width: 2em;
    height: 1.5px;

    background: var(--color-accent);

    transform: translateY(-50%);

    box-shadow: 
    0 0 6px rgba(0, 255, 127, 0.6),
    0 0 12px rgba(0, 255, 127, 0.4);
}

@media (max-width: 600px) {
    .story-closer {
        font-size: 0.9rem;
    }
}


/* ニュース */
.news-list {
    list-style: none;
    padding: 0;
}

.news-item {
    display: flex;
    gap: 16px;
    align-items: baseline;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.news-item .date {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.6);
    min-width: 100px;
}

.news-link {
    color: var(--color-primary);
    font-weight: 600;
    text-decoration: none;
    position: relative;
    transition: color 0.3s ease;
}

.news-link:hover {
    color: var(--color-accent);
}


/* キャスト・スタッフ */
.cast-list {
    list-style: none;
    padding: 0;
}

.staff-list,
.staff-cooperation-list {
    list-style: none;
    padding: 0;
    text-align: center;
}

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

.cast-item img {
    width: 250px;
    height: auto;
    display: block;
}

.cast-name {
    margin-top: 12px;
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: 0.1em;
}

.staff-item,
.staff-cooperation-item {
    padding: 6px 0;
    border-bottom: 1px dashed rgba(255, 255, 255, 0.2);
}

.cast-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    justify-items: center;
}

@media (min-width: 600px) {
    .cast-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.cast-item:first-child {
    grid-column: 1 / -1;
}

.cast-photo {
    position: relative;
    display: inline-block;
}

.x-link {
    position: absolute;
    right: 0;
    bottom: -2.6em;
}

.x-link img {
    width: 18px;
    height: 18px;
}

.staff-cooperation-title {
    margin-top: 40px;
    margin-bottom: 4px;
    text-align: center;
    opacity: 0.8;
}

.staff-cooperation-list {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-top: 0;
    text-align: center;
}


/* チケット */
.theatre {
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 0px;
    line-height: 1.2;
}

.map {
    font-size: 14px;
    opacity: 0.8;
    margin-top: 0;
    margin-bottom: 16px;
    line-height: 1.2;
}

iframe {
    width: 100%;
    max-width: 500px;
    height: 300px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.kikan,
.sale {
    font-size: 15px;
    margin: 6px 0;
}

/* チケットボタン */
.ticket-button {
    display: block;
    width: 100%;
    max-width: 420px;
    margin: 40px auto 0;

    padding: 18px 0px;
    font-size: 18px;
    font-weight: bold;
    text-align: center;
    
    color: #ffffff;
    background: var(--color-primary);
    border-radius: 50px;
    text-decoration: none;
    transition: 0.3s;

    border: 2px solid rgba(255, 255, 255, 0.6);
}

.ticket-button:hover {
    opacity: 0.85;
}

/* 料金表 */
.price-list {
    margin: 30px 0 0;
    padding: 0;
    list-style: none;
    text-align: left;
}

.price {
    width: 100%;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #444;
    padding: 16px 0;
}

.seat-name {
    font-weight: 700;
}

.seat-note {
    font-size: 13px;
    opacity: 0.8;
    margin-left: 8px;
}

.seat-price {
    padding-left: 40px;
    font-weight: 800;
    font-size: 17px;
}

.seat-left {
    display: inline-flex;
    align-items: baseline;
}


/* フッター */
.footer {
    background: var(--color-section-b);
    padding: 20px 20px;
    text-align: center;
    font-size: 14px;
    opacity: 0.85;
}

.footer a {
    color: var(--color-primary);
    text-decoration: none;
}


/* YouTube */
#videoModal {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.7);
    justify-content: center;
    align-items: center;
    z-index: 5000;
    padding: 10px;
}

#videoModal iframe {
    width: 100%;
    max-width: 640px;
    aspect-ratio: 16/9;
    border: none;
    border-radius: 8px;
}

#closeVideoModal {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 24px;
    background: #fff;
    border: none;
    border-radius: 50%;
    width: 32px; height: 32px;
    cursor: pointer;
}

@media (max-width: 600px) {
    #videoModal iframe {
        max-width: 90%;
    }

    #closeVideoModal {
        width: 28px;
        height: 28px;
        font-size: 20px;
    }
}