@charset "UTF-8";

/* --- Variables: 実務と熱狂の並列化 --- */
:root {
    --usn-navy: #002244;
    --usn-gold: #c5a059;
    --usn-white: #f5f5f5;
    --text-main: #333333;
    /* 読みやすさ重視の2.2と、1.06 BISの黄金比をデバッグ [cite: 2026-02-13] */
    --bis-rhythm: 2.2;
}

/* --- Base Body: 100年飛ばす堅牢な地肌 --- */
body {
    font-family: 'Segoe UI', 'Sawarabi Gothic', sans-serif;
    line-height: var(--bis-rhythm);
    color: var(--text-main);
    margin: 0;
    background-color: var(--usn-white);
    /* 航空図をイメージしたドット方眼背景 [cite: 2026-02-13] */
    background-image: radial-gradient(#ccc 0.5px, transparent 0.5px);
    background-size: 20px 20px;
}

/* --- Global Header: 空母のカタパルト・デッキ --- */
header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--usn-navy);
    border-bottom: 4px solid var(--usn-gold);
    color: white;
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

header .logo {
    font-size: 1.5rem;
    font-weight: bold;
    letter-spacing: 2px;
    text-transform: uppercase;
}

header .logo span {
    color: var(--usn-gold);
}

header .logo a {
    text-decoration: none;
    color: inherit;
    transition: 0.3s;
    display: inline-block;
}

header .logo a:hover {
    transform: scale(1.05);
    /* セリーヌ・P・ニッパーヌの加護を思わせる発光演出 [cite: 2026-02-13] */
    text-shadow: 0 0 10px var(--usn-gold);
}

nav ul {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    gap: 1.5rem;
    margin: 0;
    padding: 0;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: bold;
    font-size: 0.85rem;
    letter-spacing: 1px;
    transition: 0.3s;
    padding-bottom: 4px;
    position: relative;
}

nav a:hover {
    color: var(--usn-gold);
}

nav a.active {
    border-bottom: 2px solid var(--usn-gold);
}

/* --- Containers: ミッション高度の確保 --- */
.main-container {
    padding-top: 40px;
    transition: padding-top 0.3s ease;
}

/* --- Global Footer: 任務完了の帰還ポイント --- */
footer {
    background: var(--usn-navy);
    color: var(--usn-white);
    text-align: center;
    padding: 2rem 1rem;
    font-size: 0.8rem;
    border-top: 4px solid var(--usn-gold);
}

.footer-nav {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-btn {
    display: inline-block;
    padding: 10px 25px;
    font-weight: bold;
    text-decoration: none;
    border: 1px solid var(--usn-gold);
    transition: 0.3s;
}

.btn-home {
    background: transparent;
    color: var(--usn-gold);
}

.btn-scroll {
    background: var(--usn-gold);
    color: var(--usn-navy);
}

/* CLASSIFIEDボタン：無骨なタイプライター調 */
.btn-classified {
    background: transparent;
    color: #ff4444;
    border: 1px solid rgba(255, 68, 68, 0.6);
    font-family: 'Courier New', monospace;
    letter-spacing: 0.1rem;
    font-size: 0.82rem;
    animation: classified-pulse 2.5s ease-in-out infinite;
}

.btn-classified:hover {
    background: rgba(255, 68, 68, 0.12);
    border-color: #ff4444;
    box-shadow: 0 0 14px rgba(255, 68, 68, 0.45);
    filter: none;
    transform: translateY(-2px);
}

@keyframes classified-pulse {

    0%,
    100% {
        border-color: rgba(255, 68, 68, 0.6);
    }

    50% {
        border-color: rgba(255, 68, 68, 0.2);
    }
}

.footer-btn:hover {
    filter: brightness(1.2);
    transform: translateY(-3px);
}

/* --- Glow Animation: DECOSKE発光プロトコル --- */
.glow {
    text-shadow: 0 0 15px var(--usn-gold);
    color: var(--usn-gold);
    transition: 0.5s;
}

/* --- 救済エリア（Kyusai Zone）: WORKS / WORKS_1〜8 用 Google翻訳誘導 --- */
.kyusai-area {
    padding: 1.5rem 5% 0.5rem;
    border-top: 1px dashed rgba(197, 160, 89, 0.25);
    margin: 0.5rem 0 1.5rem;
    text-align: center;
}

.kyusai-trigger {
    font-size: 0.7rem;
    color: rgba(197, 160, 89, 0.65);
    font-family: 'Courier New', monospace;
    letter-spacing: 0.2rem;
    margin-bottom: 0.8rem;
}

.kyusai-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    justify-content: center;
}

/* 共通ボタンベース */
.kagami-btn,
.konata-btn {
    padding: 0.4rem 1rem;
    border: none;
    cursor: pointer;
    font-family: 'Sawarabi Mincho', serif;
    font-size: 0.78rem;
    transition: all 0.3s ease;
    letter-spacing: 0.05rem;
    line-height: 1.4;
}

/* かがみん：ツンデレ、暗赤色 */
.kagami-btn {
    background: #4a0000;
    color: #ffaaaa;
    border: 1px solid #8b0000;
}

.kagami-btn:hover {
    background: #cc0000;
    color: #fff;
    transform: scale(1.06);
    box-shadow: 0 0 14px rgba(204, 0, 0, 0.7);
}

/* こなた：ゴールドアクセント、脱力系 */
.konata-btn {
    background: transparent;
    color: var(--usn-gold);
    border: 1px solid rgba(197, 160, 89, 0.5);
}

.konata-btn:hover {
    background: var(--usn-gold);
    color: var(--usn-navy);
    transform: scale(1.04);
}

@media (max-width: 600px) {
    .kyusai-buttons {
        flex-direction: column;
        align-items: center;
    }

    .kagami-btn,
    .konata-btn {
        width: 100%;
        max-width: 320px;
    }
}

/* ヘッダーの矢印（誘導サイン）を怪しく明滅させるナリ */
nav ul span {
    color: var(--usn-gold);
    font-family: 'Courier New', monospace;
    opacity: 0.4;
    animation: flow-arrow 3s infinite ease-in-out;
    display: inline-block;
    padding: 0 5px;
}

/* 矢印が左から右へ流れるようなアニメーション */
@keyframes flow-arrow {

    0%,
    100% {
        opacity: 0.2;
        transform: translateX(0);
    }

    50% {
        opacity: 0.8;
        transform: translateX(5px);
    }
}

/* 2つ目のspanは少し遅らせて、波打つようにするナリ */
nav ul span:nth-of-type(2) {
    animation-delay: 0.5s;
}

nav ul span:nth-of-type(3) {
    animation-delay: 1.0s;
}