:root {
    /* 配色方案 */
    --bg-color: #0a0510;
    --text-color: #0f0;
    --highlight-color: #ff00ff;
    --sidebar-bg: #05020a;

    /* 玻璃質感視窗 */
    --win-bg: rgba(230, 204, 255, 0.9);
    --win-border: #9d00ff;
    --win-text: #000;
    --win-shadow: 4px 4px 0px #000;

    --btn-bg: #d1b3ff;
    --crt-opacity: 1;
    --logo-color: #d580ff;
}

body.tranquil-mode {
    --bg-color: #111;
    --text-color: #999;
    --highlight-color: #777;
    --win-bg: rgba(51, 45, 59, 0.9);
    --win-border: #444;
    --win-text: #e6ccff;
    --btn-bg: #554b60;
    --crt-opacity: 0;
    --logo-color: #888;
}

body.pineapple-mode {
    --bg-color: #1a1a00;
    --text-color: #00ff00;
    --highlight-color: #ff6600;
    --win-bg: rgba(255, 251, 230, 0.9);
    --win-border: #ffcc00;
    --win-text: #004d00;
    --btn-bg: #ffee99;
    --win-shadow: 4px 4px 0px #331a00;
    --logo-color: #ffaa00;
}

body, html {
    margin: 0; padding: 0; height: 100vh; height: 100dvh; width: 100vw;
    background-color: var(--bg-color); color: var(--text-color);
    font-family: 'DotGothic16', sans-serif; overflow: hidden;
    user-select: none; -webkit-user-select: none;
    /* touch-action: pan-y 允許垂直 scroll（子頁面內容），但不允許雙指縮放 */
    touch-action: pan-y;
    cursor: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" style="font-size:24px"><text y="24">🍍</text></svg>'), auto;
}

/* 霓虹捲軸 */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: #000; border-left: 1px solid var(--win-border); }
::-webkit-scrollbar-thumb { background: var(--highlight-color); border: 1px solid #fff; }
::-webkit-scrollbar-thumb:hover { background: #fff; }

* {
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

/* 無障礙：鍵盤焦點仍可見，滑鼠點擊時不顯示 */
*:focus { outline: none; }
*:focus-visible {
    outline: 2px solid var(--highlight-color);
    outline-offset: 2px;
}

/* 背景與濾鏡 */
#matrix-bg { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; z-index: 0; pointer-events: none; opacity: 0.6; }
.bg-grid { position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: 1; pointer-events: none; background-image: linear-gradient(rgba(157, 0, 255, 0.1) 1px, transparent 1px), linear-gradient(90deg, rgba(157, 0, 255, 0.1) 1px, transparent 1px); background-size: 40px 40px; }
.film-grain { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; z-index: 9996; pointer-events: none; opacity: 0.04; background-image: url('data:image/svg+xml;utf8,<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg"><filter id="noiseFilter"><feTurbulence type="fractalNoise" baseFrequency="0.8" numOctaves="3" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23noiseFilter)"/></svg>'); }
.crt-overlay { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; z-index: 9997; pointer-events: none; opacity: var(--crt-opacity); background: radial-gradient(circle at center, transparent 50%, rgba(0, 0, 0, 0.4) 100%), linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%); background-size: 100% 100%, 100% 2px; }
.scanline { position: fixed; top: 0; left: 0; width: 100vw; height: 8px; background: rgba(255, 255, 255, 0.1); opacity: 0.6; z-index: 9998; pointer-events: none; animation: rollDown 8s linear infinite; }
@keyframes rollDown { 0% { transform: translateY(-10vh); } 100% { transform: translateY(110vh); } }

/* CRT Boot */
#crt-boot { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background: transparent; z-index: 10000; pointer-events: none; display: flex; justify-content: center; align-items: center; }
.crt-line { width: 0; height: 2px; background: #ff00ff; box-shadow: 0 0 15px #ff00ff, 0 0 30px #ff00ff; animation: crt-turn-on 1.8s cubic-bezier(0.23, 1, 0.32, 1) forwards; }
@keyframes crt-turn-on { 0% { width: 0; height: 2px; opacity: 1; } 30% { width: 100%; height: 2px; opacity: 1; } 40% { height: 100vh; background: rgba(255, 0, 255, 0.7); opacity: 1; } 70% { height: 100vh; background: transparent; opacity: 1; } 100% { height: 100vh; background: transparent; opacity: 0; } }
#bios-screen { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: #000; color: #ff00ff; z-index: 9999; padding: 20px; font-size: 16px; box-sizing: border-box; text-shadow: 0 0 5px #ff00ff; }

/* =========================================
   特效樣式
   ========================================= */
.stardust {
    position: fixed; pointer-events: none; z-index: 9999;
    color: var(--highlight-color); font-family: 'DotGothic16'; font-weight: bold;
    animation: fall-fade 0.6s forwards;
    text-shadow: 0 0 4px var(--highlight-color);
}
@keyframes fall-fade {
    0% { opacity: 1; transform: translate(0, 0) scale(1); }
    100% { opacity: 0; transform: translate(var(--tx), var(--ty)) scale(0.2); }
}

.particle {
    position: fixed; pointer-events: none; z-index: 10001;
    border-radius: 50%;
    animation: explode-drop 0.8s cubic-bezier(0.1, 0.8, 0.3, 1) forwards;
}
@keyframes explode-drop {
    0% { transform: translate(0, 0) scale(1); opacity: 1; }
    60% { opacity: 0.8; }
    100% { transform: translate(var(--tx), var(--ty)) scale(0); opacity: 0; }
}

.glitch-particle {
    position: fixed; pointer-events: none; z-index: 10001;
    font-family: 'DotGothic16', monospace; font-weight: bold; font-size: 14px;
    color: var(--highlight-color); text-shadow: 1px 1px 0 #000;
    white-space: nowrap; animation: glitch-fly 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}
@keyframes glitch-fly {
    0% { transform: translate(0, 0) scale(1); opacity: 1; }
    20% { opacity: 1; color: #fff; }
    40% { opacity: 0.8; color: var(--highlight-color); }
    100% { transform: translate(var(--tx), var(--ty)) scale(0.5); opacity: 0; }
}

.shatter-particle {
    position: fixed; width: 10px; height: 10px; pointer-events: none; z-index: 10001;
    animation: shatter 0.6s ease-out forwards;
}
@keyframes shatter { 0% { opacity: 1; } 100% { transform: translate(var(--tx), var(--ty)) rotate(180deg); opacity: 0; } }

.transmitting {
    animation: rgb-shake 0.3s linear; background: var(--highlight-color) !important;
    color: #000 !important; box-shadow: 0 0 15px var(--highlight-color) !important; border-color: #fff !important;
}
@keyframes rgb-shake {
    0% { transform: translate(0,0); text-shadow: none; }
    25% { transform: translate(-2px, 1px); text-shadow: 2px 0 #ff0000, -2px 0 #0000ff; }
    50% { transform: translate(2px, -1px); text-shadow: -2px 0 #ff0000, 2px 0 #0000ff; }
    75% { transform: translate(-1px, 2px); text-shadow: 2px 0 #ff0000, -2px 0 #0000ff; }
    100% { transform: translate(0,0); text-shadow: none; }
}

/* 介面佈局 */
.layout-container { display: flex; height: 100%; width: 100%; position: relative; z-index: 10; }

.sidebar { width: 250px; background-color: var(--sidebar-bg); border-right: 2px solid var(--win-border); padding: 30px 20px; display: flex; flex-direction: column; position: relative; z-index: 10000; }

.logo-area { position: relative; margin-bottom: 20px; }
.logo-area h1 {
    color: var(--logo-color); margin: 0; line-height: 1.15; position: relative;
    -webkit-text-stroke: 1px rgba(213, 128, 255, 0.6);
}
.logo-cn {
    display: block; font-family: 'DotGothic16', sans-serif;
    font-size: 32px; letter-spacing: 3px; position: relative;
}
.logo-en {
    display: block; font-family: 'DotGothic16', sans-serif;
    font-size: 22px; letter-spacing: 2px; position: relative;
}

/* Glitch RGB 色差 - 紅色層 */
.logo-cn::before, .logo-en::before {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    overflow: hidden; color: #ff0040; z-index: -1;
    -webkit-text-stroke: 0;
    animation: glitch-r 3s infinite linear alternate-reverse;
}
.logo-cn::before { content: '寧靜音樂節'; }
.logo-en::before { content: 'UNSILENCE OS'; }

/* Glitch RGB 色差 - 青色層 */
.logo-cn::after, .logo-en::after {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    overflow: hidden; color: #00ffff; z-index: -1;
    -webkit-text-stroke: 0;
    animation: glitch-b 2s infinite linear alternate-reverse;
}
.logo-cn::after { content: '寧靜音樂節'; }
.logo-en::after { content: 'UNSILENCE OS'; }

@keyframes glitch-r {
    0% { clip-path: inset(40% 0 60% 0); transform: translate(-2px, 0); }
    20% { clip-path: inset(10% 0 85% 0); transform: translate(2px, 0); }
    40% { clip-path: inset(70% 0 5% 0); transform: translate(-1px, 0); }
    60% { clip-path: inset(20% 0 70% 0); transform: translate(1px, 0); }
    80% { clip-path: inset(55% 0 30% 0); transform: translate(-2px, 0); }
    100% { clip-path: inset(5% 0 90% 0); transform: translate(2px, 0); }
}
@keyframes glitch-b {
    0% { clip-path: inset(60% 0 20% 0); transform: translate(2px, 0); }
    20% { clip-path: inset(5% 0 80% 0); transform: translate(-2px, 0); }
    40% { clip-path: inset(30% 0 50% 0); transform: translate(1px, 0); }
    60% { clip-path: inset(80% 0 5% 0); transform: translate(-1px, 0); }
    80% { clip-path: inset(15% 0 65% 0); transform: translate(2px, 0); }
    100% { clip-path: inset(50% 0 35% 0); transform: translate(-2px, 0); }
}

.nav-links { list-style: none; padding: 0; margin: 20px 0 0 0; flex-grow: 1; overflow-y: auto;}
.nav-links li { margin-bottom: 4px; }

.nav-links a { position: relative; color: var(--text-color); text-decoration: none; font-size: 18px; display: flex; align-items: center; min-height: 40px; padding: 6px 8px; cursor: pointer; transition: color 0.2s, transform 0.2s; text-shadow: 0 0 2px #000; }
.nav-links a::after { content: ''; position: absolute; inset: 0; z-index: 10; }
.nav-links a:hover { color: var(--highlight-color); transform: translateX(5px); text-shadow: 2px 0 red, -2px 0 cyan; }

/* 呼吸光暈 + 微彈跳動畫 */
@keyframes icon-pulse {
    0%, 100% { transform: scale(1); filter: drop-shadow(0 0 0px transparent); }
    50% { transform: scale(1.15); filter: drop-shadow(0 0 8px var(--highlight-color)); }
}

/* 火雞觸發按鈕 */
#secret-turkey {
    font-size: 32px;
    text-align: center;
    cursor: pointer;
    margin: 15px 0 10px 0;
    position: relative;
    z-index: 10050;
    user-select: none;
    animation: icon-pulse 2.5s ease-in-out infinite;
}
#secret-turkey:hover {
    animation: none;
    transform: scale(1.3);
    filter: drop-shadow(0 0 12px var(--highlight-color));
}

/* sidebar 底部列：CREDITS + 火雞 + IG */
.sidebar-bottom { display: flex; align-items: center; justify-content: space-between; margin-top: 10px; }
.sidebar-bottom-link { color: var(--highlight-color); text-decoration: none; font-size: 18px; cursor: pointer; transition: color 0.2s; text-shadow: 0 0 2px #000; }
.sidebar-bottom-link:hover { text-shadow: 2px 0 red, -2px 0 cyan; }
.sidebar-bottom-icons { display: flex; align-items: center; gap: 8px; }
.sidebar-ig {
    display: none; /* 電腦版隱藏，手機版才顯示 */
    font-size: 28px; cursor: pointer; text-shadow: 2px 2px 0px #000;
    position: relative;
    animation: icon-pulse 2.5s ease-in-out infinite;
    animation-delay: 1.2s;
}
.sidebar-ig svg { width: 28px; height: 28px; }
.sidebar-ig:hover {
    animation: none;
    transform: scale(1.3);
    filter: drop-shadow(0 0 12px var(--highlight-color));
}

/* Tooltip（CSS-only） */
#secret-turkey::after, .sidebar-ig::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: #000;
    color: var(--highlight-color);
    border: 1px solid var(--highlight-color);
    padding: 4px 8px;
    font-size: 11px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    font-family: 'DotGothic16', monospace;
}
#secret-turkey:hover::after, .sidebar-ig:hover::after {
    opacity: 1;
}

.mode-toggle { background: #000; border: 2px solid var(--win-border); color: var(--text-color); padding: 10px 12px; font-family: 'DotGothic16'; cursor: pointer; margin-top: 5px; font-size: 16px; }
.mode-toggle:hover { background: var(--win-border); color: #000; }

.main-content { flex-grow: 1; position: relative; }

/* 視窗樣式 */
.window {
    position: absolute; background-color: var(--win-bg); backdrop-filter: blur(5px); -webkit-backdrop-filter: blur(5px);
    color: var(--win-text); border: 2px solid #fff; border-right-color: #555; border-bottom-color: #555;
    box-shadow: var(--win-shadow); z-index: 10; display: flex; flex-direction: column; touch-action: none; transition: opacity 0.2s;
}

.window-header { background-color: var(--win-border); color: #fff; padding: 4px 8px; font-weight: bold; display: flex; justify-content: space-between; align-items: center; cursor: grab; user-select: none; touch-action: none; transition: text-shadow 0.2s; }
.window.focused .window-header { text-shadow: 0 0 8px #fff, 0 0 15px #fff; }
.window-header:active { cursor: grabbing; }

.close-btn { position: relative; background: var(--win-bg); color: #000; border: 1px solid #fff; border-right-color: #555; border-bottom-color: #555; padding: 2px 8px; cursor: pointer; font-size: 12px; font-weight: bold; min-width: 28px; min-height: 28px; display: flex; align-items: center; justify-content: center; }
.close-btn::after { content: ''; position: absolute; top: -10px; left: -10px; right: -10px; bottom: -10px; }
.close-btn:active { border: 1px solid #555; border-right-color: #fff; border-bottom-color: #fff; }

.window-content { padding: 12px; font-size: 14px; flex-grow: 1; overflow-y: auto; text-align: center; user-select: text; -webkit-user-select: text; }
.sys-btn { background: var(--btn-bg); color: var(--win-text); padding: 4px 12px; display: inline-block; margin-top: 10px; font-size: 14px; border: 2px solid #fff; border-right-color: #555; border-bottom-color: #555; cursor: pointer; text-decoration: none;}
.sys-btn:active { border: 2px solid #555; border-right-color: #fff; border-bottom-color: #fff; transform: translate(1px, 1px); }

.teaser-win { width: 240px; }
#win-1 { top: 8vh; left: 5vw; } #win-2 { top: 12vh; left: 25vw; } #win-3 { top: 35vh; left: 8vw; }
#win-4 { top: 40vh; left: 30vw; } #win-5 { top: 60vh; left: 12vw; } #win-6 { top: 65vh; left: 35vw; } #win-7 { top: 25vh; left: 45vw; }
#win-8 { top: 50vh; left: 52vw; }

#main-app-window { width: 600px; height: 400px; display: none; max-width: 90vw; max-height: 80vh; }
#main-app-window .window-content { background: #f8f2ff; border: inset 2px #a366ff; margin: 10px; padding: 15px; text-align: left; }
body.tranquil-mode #main-app-window .window-content { background: #333; }
body.tranquil-mode .logo-cn::before, body.tranquil-mode .logo-cn::after,
body.tranquil-mode .logo-en::before, body.tranquil-mode .logo-en::after { display: none; }
body.tranquil-mode .logo-area h1 { -webkit-text-stroke: 0; }
body.pineapple-mode #main-app-window .window-content { background: #ffffe6; }

.desktop-icon { position: absolute; bottom: 60px; right: 40px; text-align: center; color: var(--text-color); cursor: pointer; z-index: 5; text-shadow: 2px 2px 0px #000; }
.desktop-icon .icon-img { font-size: 40px; margin-bottom: 5px; color: var(--text-color); }
.desktop-icon .icon-img svg { width: 36px; height: 36px; }
.desktop-icon:hover { transform: scale(1.1); color: var(--highlight-color); }

.modal-overlay { display: none; position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background: rgba(0,0,0,0.6); z-index: 9000; }
.alert-modal { display: none; position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 300px; z-index: 9001; }

.seo-info-bar { display: flex; flex-wrap: wrap; gap: 6px 12px; justify-content: center; align-items: center; padding: 6px 16px 32px; font-family: 'DotGothic16', monospace; font-size: 11px; color: #555; pointer-events: none; }
.seo-info-bar .seo-sep { color: #333; }
.marquee-container { position: fixed; bottom: 0; left: 0; width: 100vw; background: var(--win-border); color: #fff; padding: 4px 0; z-index: 100; border-top: 2px solid #fff; padding-bottom: env(safe-area-inset-bottom, 4px); }
.marquee-content { display: inline-block; white-space: nowrap; animation: marquee 20s linear infinite; font-size: 16px; }
@keyframes marquee { 0% { transform: translateX(100vw); } 100% { transform: translateX(-100%); } }

/* =========================================
   子頁面共用樣式（從 timetable/map 內嵌移入）
   ========================================= */

/* timetable */
.current-slot { background: var(--highlight-color); color: #000; font-weight: bold; }
.current-slot td { border-color: #000 !important; }
.now-tag { animation: blinker 2s linear infinite; display: inline-block; margin-left: 5px; font-size: 12px; }

/* map */
#radar-map {
    position: relative; width: 100%; height: 200px; background: #0a0510;
    border: inset 2px #555; overflow: hidden;
    background-image: radial-gradient(#9d00ff 1px, transparent 1px); background-size: 20px 20px;
    box-sizing: border-box;
}

.map-node {
    position: absolute; width: 12px; height: 12px; background: #0f0;
    border-radius: 50%; cursor: pointer; transform: translate(-50%, -50%);
    box-shadow: 0 0 8px #0f0; transition: 0.2s;
}

.map-node::after {
    content: '';
    position: absolute;
    top: 50%; left: 50%;
    width: 44px; height: 44px;
    transform: translate(-50%, -50%);
}

.map-node:hover { background: #ff00ff; box-shadow: 0 0 12px #ff00ff; transform: translate(-50%, -50%) scale(1.3); }

.map-node.active {
    background: #ff00ff !important;
    box-shadow: 0 0 15px #ff00ff, 0 0 30px #ff00ff !important;
    transform: translate(-50%, -50%) scale(1.5) !important;
    animation: none !important;
    z-index: 10;
}

.node-noise { top: 40%; left: 30%; }
.node-silence { top: 60%; left: 70%; }
.node-store { top: 80%; left: 50%; background: #ffcc00; box-shadow: 0 0 8px #ffcc00; }

#radar-info { margin-top: 15px; background: rgba(0,0,0,0.5); border: 1px solid var(--highlight-color); padding: 10px; min-height: 45px; color: #fff; font-size: 14px; box-sizing: border-box;}

/* =========================================
   MOBILE OPTIMIZATION
   ========================================= */
@media (max-width: 800px) {
    .layout-container { flex-direction: column; }
    .sidebar { width: 100%; height: auto; border-right: none; border-bottom: 2px solid var(--win-border); padding: 10px 15px; box-sizing: border-box; position: relative; z-index: 100; }

    .logo-area { margin-bottom: 5px; text-align: center; }
    .logo-area h1 { line-height: 1.2; display: inline-block;}
    .logo-area h1 br { display: none; }
    .logo-cn { display: inline; font-size: 22px; letter-spacing: 2px; }
    .logo-en { display: inline; font-size: 13px; letter-spacing: 1px; margin-left: 12px; }
    .logo-cn::before, .logo-cn::after, .logo-en::before, .logo-en::after { display: none; }

    #secret-turkey {
        position: static;
        margin: 0;
        font-size: 26px;
    }

    .sidebar-bottom { margin-top: 5px; padding: 0 5px; }
    .sidebar-bottom-link { font-size: 14px; }
    .sidebar-ig { display: inline-flex; font-size: 26px; }
    .sidebar-ig svg { width: 24px; height: 24px; }
    .desktop-icon { display: none !important; }

    .nav-links { margin: 5px 0 5px 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
    .nav-links li { margin: 0; }
    /* 觸控目標 ≥44px（Apple HIG/WCAG 建議） */
    .nav-links a { font-size: 16px; padding: 10px 12px; min-height: 44px; }
    .mode-toggle { margin-top: 5px; padding: 8px 12px; font-size: 14px; width: auto; display: inline-block; min-height: 44px; }

    /* teaser-win 在小螢幕（≤480px）改成不同階梯避免完全重疊 */
    .teaser-win { width: 150px; display: flex !important; }
    #win-1 { top: 2vh; left: 2vw; } #win-2 { top: 7vh; left: 38vw; } #win-3 { top: 13vh; left: 8vw; }
    #win-4 { top: 20vh; left: 42vw; } #win-5 { top: 27vh; left: 4vw; } #win-6 { top: 34vh; left: 40vw; }
    #win-7 { top: 41vh; left: 10vw; } #win-8 { top: 48vh; left: 38vw; }

    /* mobile 省電：關閉 backdrop-filter，改為純色背景 */
    .window { backdrop-filter: none !important; -webkit-backdrop-filter: none !important; }

    #main-app-window, #game-window {
        position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
        width: 92vw !important; height: auto !important; max-height: 75dvh !important;
        margin: 0; z-index: 10005;
    }
    #main-app-window .window-content, #game-window .window-content { overflow-y: auto; max-height: 65dvh; }
    .desktop-icon { bottom: calc(40px + env(safe-area-inset-bottom, 20px)); right: 20px; }
    /* mobile 遊戲視窗：放大顯示比例，火雞才看得清楚 */
    #game-window .window-content { aspect-ratio: 4/3 !important; min-height: 400px !important; padding: 0 !important; }
    #run-canvas {
        width: 100% !important;
        height: 100% !important;
        object-fit: cover !important;
        display: block;
    }
}

.blink { animation: blinker 2s linear infinite; }
@keyframes blinker { 50% { opacity: 0; } }

/* =========================================
   prefers-reduced-motion
   ========================================= */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .scanline, .film-grain { display: none; }
    .marquee-content { animation: none; }
}