/* =========================================================================
   VALKO / 敖尹 聲援站 — "Moonlit Steel 月下鋼鐵"
   原創設計系統 · 無使用任何官方美術素材
   Palette: 槍鐵炭黑 base · 血緋 crimson · 熔金 gold · 鋼銀 steel · 月白 moon
   ========================================================================= */

:root {
  /* --- surfaces --- */
  --bg:        #0b0c10;
  --bg-2:      #101218;
  --panel:     #14161e;
  --panel-2:   #191c26;
  --line:      #262a36;
  --line-soft: #1d2029;

  /* --- ink --- */
  --ink:       #e7e9f0;
  --ink-soft:  #aab0c0;
  --ink-mute:  #737a8c;

  /* --- accents --- */
  --crimson:   #d8324a;
  --crimson-2: #ec526a;
  --gold:      #d8ab5a;
  --gold-2:    #f0d38c;
  --steel:     #aeb6c6;
  --moon:      #eef1fa;

  /* --- effects --- */
  --glow-moon: 0 0 90px 20px rgba(220, 226, 245, .10);
  --glow-red:  0 0 34px rgba(216, 50, 74, .35);
  --shadow:    0 24px 60px -22px rgba(0,0,0,.75);

  --maxw: 1120px;
  --ease: cubic-bezier(.2,.7,.2,1);

  --font-display: "Cinzel", "Noto Serif TC", "Noto Serif JP", serif;
  --font-body:    "Noto Serif TC", "Noto Serif JP", "EB Garamond", Georgia, serif;
  --font-sans:    "Zen Kaku Gothic New", "Noto Sans TC", system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.8;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* grain + vignette atmosphere */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none; z-index: 1;
  background:
    radial-gradient(120% 80% at 50% -10%, rgba(30,34,48,.55), transparent 60%),
    radial-gradient(100% 100% at 50% 120%, rgba(216,50,74,.06), transparent 55%);
}
body::after {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none; z-index: 2; opacity: .05; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 26px; position: relative; z-index: 3; }
.narrow { max-width: 820px; }

/* ---------- Typography ---------- */
h1,h2,h3 { font-family: var(--font-display); font-weight: 600; line-height: 1.2; letter-spacing: .02em; }
.eyebrow {
  font-family: var(--font-sans);
  font-size: .74rem; letter-spacing: .42em; text-transform: uppercase;
  color: var(--gold); font-weight: 600;
}
.gold-text {
  background: linear-gradient(100deg, var(--gold) 0%, var(--gold-2) 45%, #b98b3d 70%, var(--gold-2) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.crimson { color: var(--crimson-2); }
a { color: var(--gold-2); text-decoration: none; transition: color .2s; }
a:hover { color: var(--crimson-2); }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 40;
  background: rgba(11,12,16,.72);
  backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid var(--line-soft);
}
.nav-inner { display: flex; align-items: center; gap: 20px; height: 66px; }
.brand { display: flex; align-items: center; gap: 12px; font-family: var(--font-display); font-size: 1.06rem; letter-spacing: .16em; color: var(--moon); }
.brand .glyph { width: 26px; height: 26px; flex: 0 0 auto; }
.nav-links { display: flex; gap: 6px; margin-left: auto; flex-wrap: wrap; }
.nav-links a {
  font-family: var(--font-sans); font-size: .82rem; letter-spacing: .06em;
  color: var(--ink-soft); padding: 8px 13px; border-radius: 999px; transition: all .2s;
}
.nav-links a:hover { color: var(--moon); background: rgba(255,255,255,.04); }
.nav-links a.active { color: var(--bg); background: linear-gradient(100deg,var(--gold),var(--gold-2)); }

.lang-switch { display: flex; gap: 2px; padding: 3px; border: 1px solid var(--line); border-radius: 999px; }
.lang-switch button {
  font-family: var(--font-sans); font-size: .74rem; letter-spacing: .05em;
  background: none; border: 0; color: var(--ink-mute); cursor: pointer;
  padding: 5px 10px; border-radius: 999px; transition: all .2s;
}
.lang-switch button.active { color: var(--bg); background: var(--crimson); }
.lang-switch button:hover:not(.active) { color: var(--moon); }

.nav-toggle { display: none; background: none; border: 0; color: var(--ink); cursor: pointer; }

/* ---------- Moon motif ---------- */
.moon {
  position: relative; border-radius: 50%;
  background:
    radial-gradient(circle at 38% 34%, #fbfcff 0%, #dfe4f0 26%, #aeb6c8 60%, #7d8496 100%);
  box-shadow: var(--glow-moon), inset -14px -12px 40px rgba(20,24,38,.6), inset 10px 8px 30px rgba(255,255,255,.35);
}
.moon::after {
  content: ""; position: absolute; inset: 0; border-radius: 50%; opacity: .5; mix-blend-mode: multiply;
  background:
    radial-gradient(circle at 62% 30%, rgba(90,98,120,.5) 0 5%, transparent 6%),
    radial-gradient(circle at 40% 62%, rgba(90,98,120,.45) 0 7%, transparent 8%),
    radial-gradient(circle at 70% 66%, rgba(90,98,120,.4) 0 4%, transparent 5%),
    radial-gradient(circle at 30% 40%, rgba(90,98,120,.4) 0 3%, transparent 4%);
}

/* ---------- Hero ---------- */
.hero { position: relative; padding: 96px 0 70px; overflow: hidden; }
.hero-moon {
  position: absolute; width: 460px; height: 460px; right: -60px; top: 40px; z-index: 0; opacity: .9;
}
.hero-grid { position: relative; z-index: 3; display: grid; gap: 12px; max-width: 760px; }
.hero h1 {
  font-size: clamp(3rem, 9vw, 6.4rem); margin: 6px 0 4px; letter-spacing: .04em;
  text-shadow: 0 2px 40px rgba(0,0,0,.6);
}
.hero .cn-name { font-family: var(--font-body); font-size: clamp(1.2rem,3.4vw,1.9rem); color: var(--steel); letter-spacing: .5em; }
.hero .lead { font-size: 1.16rem; color: var(--ink-soft); max-width: 560px; margin-top: 14px; }
.hero .dates {
  display: inline-flex; gap: 18px; margin-top: 24px; flex-wrap: wrap;
  font-family: var(--font-sans); font-size: .8rem; letter-spacing: .05em; color: var(--ink-mute);
}
.hero .dates b { color: var(--crimson-2); font-weight: 600; }
.hero .dates s { color: var(--ink-mute); }

.btn-row { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }
.btn {
  font-family: var(--font-sans); font-size: .86rem; letter-spacing: .06em;
  padding: 13px 24px; border-radius: 999px; cursor: pointer; border: 1px solid transparent;
  transition: all .25s var(--ease); display: inline-flex; align-items: center; gap: 9px;
}
.btn-primary { background: linear-gradient(100deg,var(--crimson),var(--crimson-2)); color: #fff; box-shadow: var(--glow-red); }
.btn-primary:hover { transform: translateY(-2px); color:#fff; }
.btn-ghost { border-color: var(--line); color: var(--ink-soft); }
.btn-ghost:hover { border-color: var(--gold); color: var(--moon); }

/* ---------- Sections ---------- */
section.block { padding: 74px 0; border-top: 1px solid var(--line-soft); }
.sec-head { margin-bottom: 40px; }
.sec-head h2 { font-size: clamp(1.8rem,4.4vw,2.8rem); margin: 10px 0 0; }
.sec-head p { color: var(--ink-soft); max-width: 640px; }

/* pupil divider bullet */
.pupil { display:inline-block; width: 12px; height: 20px; vertical-align: middle;
  background: radial-gradient(ellipse 50% 50% at 50% 50%, var(--gold-2), var(--gold) 40%, #7a5a24 75%);
  border-radius: 50%; box-shadow: 0 0 10px rgba(216,171,90,.6); }

/* ---------- Stat strip ---------- */
.stats { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; background: var(--line-soft);
  border: 1px solid var(--line-soft); border-radius: 16px; overflow: hidden; }
.stat { background: var(--panel); padding: 24px 20px; }
.stat .k { font-family: var(--font-sans); font-size: .68rem; letter-spacing: .22em; text-transform: uppercase; color: var(--ink-mute); }
.stat .v { font-family: var(--font-display); font-size: 1.7rem; margin-top: 8px; color: var(--moon); }
.stat .v small { font-size: .8rem; color: var(--ink-soft); }

/* ---------- Cards ---------- */
.grid { display: grid; gap: 20px; }
.grid.cols-2 { grid-template-columns: repeat(2,1fr); }
.grid.cols-3 { grid-template-columns: repeat(3,1fr); }

.card {
  background: linear-gradient(160deg, var(--panel), var(--bg-2));
  border: 1px solid var(--line); border-radius: 18px; padding: 28px;
  position: relative; transition: transform .3s var(--ease), border-color .3s;
}
.card:hover { transform: translateY(-4px); border-color: rgba(216,171,90,.4); }
.card h3 { font-size: 1.24rem; margin: 0 0 10px; color: var(--moon); }
.card .num { font-family: var(--font-display); font-size: 2.4rem; color: rgba(216,50,74,.35); line-height: 1; }
.card p { color: var(--ink-soft); margin: 8px 0; font-size: .98rem; }
.card .label { font-family: var(--font-sans); font-size: .68rem; letter-spacing: .18em; text-transform: uppercase; color: var(--gold); display:block; margin-top: 14px; }

/* profile rows */
.prow { display: grid; grid-template-columns: 200px 1fr; gap: 24px; padding: 26px 0; border-top: 1px solid var(--line-soft); }
.prow:last-child { border-bottom: 1px solid var(--line-soft); }
.prow .plabel { font-family: var(--font-display); font-size: 1.15rem; color: var(--gold-2); letter-spacing: .04em; }
.prow .pbody { color: var(--ink-soft); }
.prow .pbody strong { color: var(--moon); font-weight: 600; }

/* ---------- Timeline ---------- */
.timeline { position: relative; margin-top: 20px; padding-left: 34px; }
.timeline::before { content:""; position:absolute; left: 9px; top: 6px; bottom: 6px; width: 2px;
  background: linear-gradient(var(--crimson), var(--gold), transparent); }
.tl-item { position: relative; padding: 0 0 34px; }
.tl-item::before { content:""; position:absolute; left: -30px; top: 6px; width: 12px; height: 12px; border-radius:50%;
  background: var(--crimson); box-shadow: 0 0 0 4px rgba(216,50,74,.16); }
.tl-item .date { font-family: var(--font-sans); font-size: .78rem; letter-spacing: .1em; color: var(--gold); }
.tl-item h4 { font-family: var(--font-display); font-size: 1.16rem; margin: 4px 0 6px; color: var(--moon); }
.tl-item p { color: var(--ink-soft); margin: 0; font-size: .96rem; }

/* ---------- Split viewpoint (argument / response) ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; margin-top: 16px; }
.split > div { padding: 22px 24px; }
.split .claim { background: rgba(216,50,74,.06); border-right: 1px solid var(--line); }
.split .resp  { background: rgba(216,171,90,.05); }
.split .tag { font-family: var(--font-sans); font-size: .68rem; letter-spacing: .16em; text-transform: uppercase; }
.split .claim .tag { color: var(--crimson-2); }
.split .resp .tag { color: var(--gold-2); }
.split p { margin: 8px 0 0; color: var(--ink-soft); font-size: .96rem; }

/* ---------- Do / Don't ---------- */
.dodont { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.dobox, .dontbox { border-radius: 16px; padding: 24px; border: 1px solid var(--line); }
.dobox { background: rgba(120,180,140,.05); }
.dontbox { background: rgba(216,50,74,.06); }
.dobox h3 { color: #8fd6a6; } .dontbox h3 { color: var(--crimson-2); }
.dodont ul { list-style: none; padding: 0; margin: 12px 0 0; }
.dodont li { padding: 7px 0 7px 26px; position: relative; color: var(--ink-soft); font-size: .96rem; }
.dobox li::before { content:"✓"; position:absolute; left:0; color:#8fd6a6; }
.dontbox li::before { content:"✕"; position:absolute; left:0; color:var(--crimson-2); }

/* ---------- Channels ---------- */
.channel { display: grid; grid-template-columns: 48px 1fr; gap: 18px; padding: 24px; background: var(--panel);
  border: 1px solid var(--line); border-radius: 16px; transition: border-color .3s; }
.channel:hover { border-color: rgba(216,171,90,.4); }
.channel .ic { width: 44px; height: 44px; border-radius: 12px; display:grid; place-items:center;
  background: rgba(216,171,90,.12); color: var(--gold-2); }
.channel h3 { font-size: 1.1rem; margin: 0 0 4px; color: var(--moon); }
.channel p { margin: 0; color: var(--ink-soft); font-size: .95rem; }

/* ---------- Template box ---------- */
.tmpl { background: var(--bg-2); border: 1px dashed var(--line); border-radius: 14px; padding: 22px 24px; margin-top: 14px; position: relative; }
.tmpl pre { font-family: var(--font-sans); white-space: pre-wrap; margin: 0; color: var(--ink-soft); font-size: .92rem; line-height: 1.7; }
.copy-btn { position: absolute; top: 14px; right: 14px; font-family: var(--font-sans); font-size: .72rem;
  background: rgba(216,171,90,.12); color: var(--gold-2); border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px; cursor: pointer; }
.copy-btn:hover { background: var(--gold); color: var(--bg); }

/* ---------- Doujin wall ---------- */
.wall { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.tribute { border: 1px solid var(--line); border-radius: 16px; overflow: hidden; background: var(--panel); }
.tribute .art { aspect-ratio: 4/3; display: grid; place-items: center; position: relative;
  background: radial-gradient(circle at 50% 35%, #1b1f2b, #0c0d12); }
.tribute .art .moon { width: 84px; height: 84px; opacity: .8; }
.tribute .art .ph { position:absolute; bottom: 12px; font-family: var(--font-sans); font-size: .68rem; letter-spacing:.14em; color: var(--ink-mute); text-transform: uppercase; }
.tribute .meta { padding: 16px 18px; }
.tribute .meta .by { font-family: var(--font-display); color: var(--gold-2); font-size: 1rem; }
.tribute .meta .note { color: var(--ink-soft); font-size: .88rem; margin-top: 4px; }
.tribute .meta .plat { font-family: var(--font-sans); font-size: .7rem; color: var(--ink-mute); letter-spacing: .1em; margin-top: 8px; }
a.art { cursor: zoom-in; text-decoration: none; }
.tribute .art img { width: 100%; height: 100%; object-fit: cover; object-position: center top; display: block; transition: transform .5s var(--ease); }
.tribute:hover .art img { transform: scale(1.045); }
.tribute .meta .by a { color: inherit; }
.tribute .meta .by a:hover { color: var(--crimson-2); }

/* ---------- Share ---------- */
.share { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin-top: 22px; }
.share .sbtn { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-sans); font-size: .82rem;
  padding: 11px 18px; border-radius: 999px; border: 1px solid var(--line); color: var(--ink-soft); cursor: pointer; background: var(--panel); transition: all .2s; }
.share .sbtn:hover { border-color: var(--gold); color: var(--moon); transform: translateY(-2px); }
.hashtags { margin-top: 16px; display: flex; gap: 10px; flex-wrap: wrap; }
.hashtags span { font-family: var(--font-sans); font-size: .78rem; color: var(--gold-2); background: rgba(216,171,90,.08); padding: 5px 12px; border-radius: 999px; }

/* ---------- Callout ---------- */
.callout { border-left: 3px solid var(--crimson); background: rgba(216,50,74,.05); padding: 20px 24px; border-radius: 0 12px 12px 0; margin: 22px 0; color: var(--ink-soft); }
.callout.gold { border-color: var(--gold); background: rgba(216,171,90,.05); }

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--line-soft); padding: 50px 0 60px; margin-top: 40px; }
.foot-grid { display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.foot-grid .brand { margin-bottom: 12px; }
footer p { color: var(--ink-mute); font-size: .84rem; max-width: 520px; line-height: 1.7; }
.disclaimer { margin-top: 24px; padding-top: 22px; border-top: 1px solid var(--line-soft); font-size: .78rem; color: var(--ink-mute); }
.foot-nav a { display:block; font-family: var(--font-sans); font-size: .84rem; color: var(--ink-soft); padding: 4px 0; }

/* ---------- 活動時間閘門（實體周邊到期自動下架） ---------- */
.merch-ended { display: none; }
#merchGate.expired .merch-live { display: none; }
#merchGate.expired .merch-ended { display: block; }

/* ---------- SPA 內容過場 ---------- */
#app { transition: opacity .2s var(--ease); }
body.is-navigating #app { opacity: .3; }

/* ---------- 常駐主題曲播放器 ---------- */
.music-fab {
  position: fixed; right: 22px; bottom: 22px; z-index: 60;
  display: flex; align-items: center; gap: 0;
  background: rgba(18,20,28,.9); backdrop-filter: blur(12px) saturate(1.2);
  border: 1px solid var(--line); border-radius: 999px;
  padding: 7px; cursor: pointer; box-shadow: var(--shadow);
  transition: border-color .3s var(--ease), transform .3s var(--ease);
  overflow: hidden; user-select: none;
}
.music-fab:hover { border-color: var(--gold); transform: translateY(-2px); }
.music-fab .disc {
  width: 40px; height: 40px; border-radius: 50%; flex: 0 0 auto; position: relative;
  background: radial-gradient(circle at 38% 34%, #fbfcff 0%, #dfe4f0 26%, #aeb6c8 60%, #7d8496 100%);
  box-shadow: inset -5px -4px 12px rgba(20,24,38,.6), inset 4px 3px 9px rgba(255,255,255,.4);
  display: grid; place-items: center;
}
.music-fab .disc::after { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #14161e; }
.music-fab.playing .disc { animation: mf-spin 7s linear infinite; }
@keyframes mf-spin { to { transform: rotate(360deg); } }
.music-fab .mf-text {
  display: flex; align-items: center; gap: 9px;
  max-width: 0; opacity: 0; white-space: nowrap;
  font-family: var(--font-sans); font-size: .8rem; letter-spacing: .04em; color: var(--ink-soft);
  transition: max-width .4s var(--ease), opacity .3s var(--ease), padding .4s var(--ease);
}
.music-fab:hover .mf-text, .music-fab.playing .mf-text { max-width: 240px; opacity: 1; padding: 0 14px 0 11px; }
.music-fab .mf-title { color: var(--gold-2); font-family: var(--font-display); letter-spacing: .05em; }
.music-fab .eq { display: inline-flex; gap: 2px; align-items: flex-end; height: 15px; }
.music-fab .eq i { width: 3px; height: 4px; border-radius: 2px; background: var(--gold-2); }
.music-fab.playing .eq i { animation: mf-eq .9s ease-in-out infinite; }
.music-fab.playing .eq i:nth-child(2) { animation-delay: .18s; }
.music-fab.playing .eq i:nth-child(3) { animation-delay: .36s; }
.music-fab.playing .eq i:nth-child(4) { animation-delay: .54s; }
@keyframes mf-eq { 0%,100% { height: 4px; } 50% { height: 15px; } }
.music-fab .mf-state { color: var(--ink-mute); font-size: .9rem; }
.music-fab.playing .mf-state { color: var(--gold-2); }
@media (prefers-reduced-motion: reduce) {
  .music-fab.playing .disc, .music-fab.playing .eq i { animation: none; }
}
@media (max-width: 560px) { .music-fab { right: 14px; bottom: 14px; } }

/* ---------- Reveal animation ---------- */
[data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
[data-reveal].in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .stats { grid-template-columns: repeat(2,1fr); }
  .grid.cols-3, .grid.cols-2, .wall { grid-template-columns: 1fr; }
  .split, .dodont { grid-template-columns: 1fr; }
  .split .claim { border-right: 0; border-bottom: 1px solid var(--line); }
  .prow { grid-template-columns: 1fr; gap: 8px; }
  .hero-moon { width: 300px; height: 300px; right: -80px; top: 20px; opacity: .5; }
  .nav-links { display: none; position: absolute; top: 66px; left: 0; right: 0; flex-direction: column;
    background: var(--bg-2); border-bottom: 1px solid var(--line); padding: 10px 26px; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .foot-grid { flex-direction: column; }
}
@media (max-width: 460px) { .stats { grid-template-columns: 1fr; } }