/* site.css -- 官網與網頁客戶端共用樣式。深色、水墨感，金色點綴。 */
:root {
  --bg: #0c0e11; --bg-2: #12151a; --panel: #161a20; --line: #262b34; --line-2: #343b48;
  --text: #d9d4c6; --muted: #8e8b82; --faint: #6b6960;
  --gold: #c8a45a; --gold-2: #e2c47e; --gold-dim: #7d6736;
  --red: #c4472f; --jade: #5f9b86; --warn: #d9604c;
  --serif: "Noto Serif TC", "Source Han Serif TC", "Songti TC", "PMingLiU", "MingLiU", serif;
  --sans: "Noto Sans TC", "Microsoft JhengHei", "PingFang TC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Sarasa Mono TC", "Noto Sans Mono CJK TC", "MingLiU", Menlo, Consolas, "DejaVu Sans Mono", monospace;
}

* { box-sizing: border-box; }
html { color-scheme: dark; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: var(--sans); font-size: 16px; line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--gold-2); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
[hidden] { display: none !important; }

/* ---- 按鈕 ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  min-height: 44px; padding: 0 1.4em; border-radius: 4px; border: 1px solid var(--line-2);
  background: transparent; color: var(--text); font: inherit; font-size: .95rem; letter-spacing: .08em;
  cursor: pointer; text-decoration: none; transition: background .15s, border-color .15s, color .15s;
}
.btn:hover { border-color: var(--gold); color: var(--gold-2); text-decoration: none; }
.btn-primary { background: var(--gold); border-color: var(--gold); color: #17130a; font-weight: 700; }
.btn-primary:hover { background: var(--gold-2); border-color: var(--gold-2); color: #17130a; }
.btn:disabled { opacity: .4; cursor: not-allowed; }

/* ---- 開發站標示 ---- */
.dev-ribbon {
  position: sticky; top: 0; z-index: 50; padding: 6px 12px; text-align: center;
  background: var(--red); color: #fff; font-size: .85rem; letter-spacing: .15em;
}
.env-badge {
  padding: 2px 10px; border-radius: 3px; background: var(--red); color: #fff;
  font-size: .78rem; letter-spacing: .12em; white-space: nowrap;
}

/* ================= 官網 ================= */
.wrap { width: min(1040px, 100% - 40px); margin-inline: auto; }

.topbar {
  position: sticky; top: 0; z-index: 40; backdrop-filter: blur(8px);
  background: rgba(12, 14, 17, .86); border-bottom: 1px solid var(--line);
}
.topbar .wrap { display: flex; align-items: center; gap: 24px; min-height: 60px; }
.brand { font-family: var(--serif); font-size: 1.25rem; letter-spacing: .25em; color: var(--gold-2); }
.brand:hover { text-decoration: none; }
.nav { display: flex; gap: 22px; margin-left: auto; font-size: .92rem; }
.nav a { color: var(--muted); letter-spacing: .1em; }
.nav a:hover { color: var(--gold-2); text-decoration: none; }
.topbar .btn { min-height: 38px; padding: 0 1.1em; }

.hero {
  position: relative; overflow: hidden; padding: 88px 0 96px;
  background:
    radial-gradient(900px 480px at 82% 0%, rgba(200, 164, 90, .13), transparent 70%),
    radial-gradient(700px 420px at 0% 100%, rgba(95, 155, 134, .08), transparent 70%);
  border-bottom: 1px solid var(--line);
}
.hero .wrap { display: grid; grid-template-columns: 1.25fr .75fr; gap: 40px; align-items: center; }
.eyebrow { color: var(--gold); letter-spacing: .3em; font-size: .85rem; margin: 0 0 18px; }
.hero h1 {
  margin: 0; font-family: var(--serif); font-weight: 700; line-height: 1.1;
  font-size: clamp(3rem, 8vw, 5.6rem); letter-spacing: .18em; color: #efe7d3;
}
.hero .en { margin: 10px 0 0; color: var(--faint); letter-spacing: .5em; font-size: .95rem; text-transform: uppercase; }
.hero .lead { margin: 28px 0 0; max-width: 34em; color: var(--text); font-size: 1.08rem; }
.cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.couplet {
  display: flex; flex-direction: row-reverse; justify-content: center; gap: 1.4rem;
  font-family: var(--serif); color: var(--gold); opacity: .92;
}
.couplet span {
  writing-mode: vertical-rl; font-size: clamp(1.25rem, 2.6vw, 1.9rem); letter-spacing: .38em;
  padding-top: .4em; border-right: 1px solid var(--gold-dim); padding-right: 1.1rem;
}
.couplet span:last-child { border-right: 0; }

.section { padding: 76px 0; border-bottom: 1px solid var(--line); }
.section:nth-of-type(even) { background: var(--bg-2); }
.section h2 {
  margin: 0 0 8px; font-family: var(--serif); font-size: 1.7rem; letter-spacing: .2em; color: #efe7d3;
}
.section h2::after { content: ""; display: block; width: 44px; height: 2px; margin-top: 14px; background: var(--gold); }
.section .sub { margin: 18px 0 0; color: var(--muted); max-width: 40em; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 16px; margin-top: 36px; }
.card { padding: 24px 24px 22px; background: var(--panel); border: 1px solid var(--line); border-radius: 6px; transition: border-color .15s; }
.card:hover { border-color: var(--gold-dim); }
.card h3 { margin: 0 0 8px; font-family: var(--serif); font-size: 1.15rem; letter-spacing: .15em; color: var(--gold-2); }
.card p { margin: 0; color: var(--text); font-size: .96rem; opacity: .9; }

.steps { counter-reset: s; list-style: none; padding: 0; margin: 36px 0 0; display: grid; gap: 14px; }
.steps li { counter-increment: s; position: relative; padding: 4px 0 4px 56px; min-height: 44px; }
.steps li::before {
  content: counter(s); position: absolute; left: 0; top: 0; width: 40px; height: 40px; border-radius: 50%;
  display: grid; place-items: center; border: 1px solid var(--gold); color: var(--gold-2);
  font-family: var(--serif); font-size: 1.1rem;
}
.steps b { color: #efe7d3; font-weight: 600; }
code, .kbd {
  font-family: var(--mono); font-size: .9em; padding: 1px 7px; border-radius: 3px;
  background: #1d222a; border: 1px solid var(--line-2); color: var(--gold-2);
}

.table-wrap { overflow-x: auto; margin-top: 32px; border: 1px solid var(--line); border-radius: 6px; }
table { width: 100%; border-collapse: collapse; min-width: 520px; }
th, td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 500; letter-spacing: .12em; font-size: .85rem; background: var(--panel); }
tr:last-child td { border-bottom: 0; }
td.mono { font-family: var(--mono); color: var(--gold-2); white-space: nowrap; }
.note { margin: 22px 0 0; color: var(--muted); font-size: .92rem; }

.footer { padding: 36px 0 52px; color: var(--faint); font-size: .85rem; text-align: center; }
.footer a { color: var(--muted); }

@media (max-width: 820px) {
  .nav { display: none; }
  .topbar .btn { margin-left: auto; }
  .hero { padding: 56px 0 64px; }
  .hero .wrap { grid-template-columns: 1fr; gap: 36px; }
  .couplet { justify-content: flex-start; }
  .section { padding: 56px 0; }
}

/* ================= 網頁客戶端 ================= */
body.play { height: 100vh; height: 100dvh; display: flex; flex-direction: column; overflow: hidden; line-height: 1.4; }

.bar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px; padding: 8px 12px; min-height: 52px;
  background: var(--bg-2); border-bottom: 1px solid var(--line);
}
.bar .brand { font-size: 1.05rem; letter-spacing: .2em; }
.bar .spacer { flex: 1; }
.bar button, .quick button, .inputbar button {
  min-height: 36px; min-width: 36px; padding: 0 12px; border-radius: 4px; border: 1px solid var(--line-2);
  background: var(--panel); color: var(--text); font: inherit; font-size: .88rem; cursor: pointer;
}
.bar button:hover, .quick button:hover:not(:disabled), .inputbar button:hover:not(:disabled) { border-color: var(--gold); color: var(--gold-2); }
.bar button[aria-expanded="true"] { border-color: var(--gold-dim); color: var(--gold-2); }
button:disabled { opacity: .4; cursor: not-allowed; }
.bar button, .bar .btn { white-space: nowrap; }

.pill { padding: 3px 12px; border-radius: 999px; font-size: .8rem; letter-spacing: .1em; border: 1px solid var(--line-2); white-space: nowrap; }
.pill-ok { color: #8fd3a0; border-color: #3c6a4a; background: rgba(95, 155, 134, .12); }
.pill-wait { color: var(--gold-2); border-color: var(--gold-dim); }
.pill-bad { color: #ff9b8a; border-color: #7a3a30; background: rgba(217, 96, 76, .1); }
.pill-off { color: var(--muted); }

.stage { flex: 1; min-height: 0; padding: 8px 6px 6px 10px; background: #0b0d10; overflow-x: auto; overflow-y: hidden; }
#terminal { height: 100%; }
.xterm-viewport { background-color: #0b0d10 !important; }

.quick {
  display: flex; flex-wrap: wrap; align-items: flex-start; gap: 14px 22px; padding: 10px 12px;
  background: var(--bg-2); border-top: 1px solid var(--line);
}
.compass { display: grid; grid-template-columns: repeat(3, 56px); grid-auto-rows: 38px; gap: 4px; }
.updown { display: grid; grid-template-rows: repeat(2, 38px); gap: 4px; }
.updown button { width: 56px; }
.cmds { display: flex; flex-wrap: wrap; gap: 6px; align-content: flex-start; max-width: 460px; }
.quick button.center { border-color: var(--gold-dim); color: var(--gold-2); }

.inputbar { display: flex; gap: 8px; padding: 8px 12px calc(8px + env(safe-area-inset-bottom)); background: var(--bg-2); border-top: 1px solid var(--line); }
.inputbar input {
  flex: 1; min-width: 0; min-height: 44px; padding: 0 14px; border-radius: 4px; border: 1px solid var(--line-2);
  background: #0b0d10; color: var(--text); font-family: var(--mono); font-size: 16px; /* 16px：避免 iOS 聚焦時自動放大 */
}
.inputbar input:focus { border-color: var(--gold); outline: none; }
.inputbar input::placeholder { color: var(--faint); }
.inputbar button { min-height: 44px; padding: 0 22px; background: var(--gold); border-color: var(--gold); color: #17130a; font-weight: 700; letter-spacing: .1em; }
.inputbar button:disabled { background: var(--panel); border-color: var(--line-2); color: var(--text); }

@media (pointer: coarse) {
  .bar button, .quick button { min-height: 44px; min-width: 44px; }
  .compass { grid-template-columns: repeat(3, 62px); grid-auto-rows: 46px; }
  .updown { grid-template-rows: repeat(2, 46px); }
}
@media (max-width: 720px) {
  .bar .brand { display: none; }
  .quick { gap: 10px 14px; }
}