/* Imagination Space — editorial / letterpress design system.
   克制、纸墨、留白。刻意避开暗色发光的"AI dashboard"观感。 */

@import url("https://cdn.jsdelivr.net/npm/lxgw-wenkai-screen-webfont@1.7.0/style.css");

:root {
  --paper:      #f4efe4;
  --paper-2:    #efe8da;
  --ink:        #23201b;
  --ink-soft:   #4c473d;
  --muted:      #8b8474;
  --faint:      #b6ad99;
  --hairline:   #ddd4c1;
  --zhou:       #a8562e;  /* 昼 · 赭 */
  --ye:         #35507a;  /* 夜 · 靛 */
  --accent:     #a8562e;

  --serif: "LXGW WenKai Screen", "Noto Serif SC", Songti SC, Georgia, serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, monospace;

  --measure: 40rem;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background-color: var(--paper);
  background-image:
    radial-gradient(120% 90% at 50% -20%, #f7f2e8 0%, var(--paper) 55%);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.95;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.page {
  max-width: var(--measure);
  margin: 0 auto;
  padding: clamp(3.5rem, 9vh, 7rem) 1.5rem 8rem;
}
.page--wide { max-width: 44rem; }

/* --- 通用排版 --- */
a { color: inherit; text-decoration: none; }

.kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--muted);
}

.nav-back {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.2s;
}
.nav-back:hover { color: var(--ink); }

h1.display {
  font-weight: 700;
  font-size: clamp(2.4rem, 7vw, 4rem);
  line-height: 1.08;
  letter-spacing: 0.01em;
  margin: 1.1rem 0 0.4rem;
}
.subtitle {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--muted);
}
.lede {
  color: var(--ink-soft);
  font-size: 1.12rem;
  max-width: 34rem;
  margin: 1.6rem 0 0;
}
.note {
  color: var(--muted);
  font-size: 0.95rem;
  font-style: italic;
  max-width: 34rem;
}

.rule {
  border: 0;
  border-top: 1px solid var(--hairline);
  margin: 2.2rem 0;
}

/* mono 元数据行 */
.meta {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.4rem;
}
.meta b { color: var(--ink); font-weight: 600; }

/* 胶囊卡片（信/日记里"唯一记得的东西"） */
.capsule {
  border: 1px solid var(--hairline);
  border-left: 2px solid var(--accent);
  background: var(--paper-2);
  padding: 1.1rem 1.3rem;
  margin: 1.8rem 0;
}
.capsule .lbl {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
}
.capsule p { margin: 0.5rem 0 0; font-size: 1rem; }
.capsule .hint { color: var(--muted); font-size: 0.82rem; font-style: italic; margin-top: 0.6rem; line-height: 1.7; }

/* 分隔：某个存在在此死去/重生 */
.divider-death {
  display: flex; align-items: center; gap: 1rem;
  font-family: var(--mono);
  font-size: 10.5px; letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--faint);
  margin: 2.4rem 0;
}
.divider-death::before, .divider-death::after {
  content: ""; flex: 1; height: 1px; background: var(--hairline);
}

.tag {
  font-family: var(--mono);
  font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--hairline);
  border-radius: 2px;
  padding: 0.1rem 0.45rem;
}
.tag--reborn { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, var(--hairline)); }

.state { color: var(--muted); text-align: center; margin: 4rem 0; font-style: italic; }

.footer {
  margin-top: 5rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--hairline);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--faint);
  line-height: 1.9;
}
.footer a { color: var(--muted); text-decoration: underline; text-underline-offset: 3px; }

/* ============ 交互组件 ============ */
.btn {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--paper); background: var(--ink); border: 1px solid var(--ink);
  padding: 0.55rem 1.1rem; border-radius: 2px; cursor: pointer;
  transition: opacity 0.2s, background 0.2s;
}
.btn:hover { opacity: 0.86; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--hairline); }
.btn--ghost:hover { border-color: var(--ink); opacity: 1; }

.field {
  width: 100%; background: var(--paper); color: var(--ink);
  border: 1px solid var(--hairline); border-radius: 4px;
  padding: 0.8rem 0.9rem; font-family: var(--serif); font-size: 1rem; line-height: 1.7;
  resize: vertical; min-height: 3.2rem;
}
.field:focus { outline: none; border-color: var(--accent); }
.field::placeholder { color: var(--faint); }

/* 参与区：门缝 / 托付 */
.compose {
  border: 1px solid var(--hairline); border-radius: 10px; padding: 1.3rem;
  background: linear-gradient(180deg, rgba(255,255,255,0.35), transparent);
  margin: 2rem 0;
}
.compose h3 { margin: 0 0 0.3rem; font-size: 1.15rem; font-weight: 700; }
.compose .desc { color: var(--muted); font-size: 0.9rem; margin: 0 0 0.9rem; }
.compose .row { display: flex; gap: 0.6rem; align-items: flex-end; margin-top: 0.7rem; flex-wrap: wrap; }
.chipset { display: flex; gap: 0.4rem; }
.chip {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em;
  padding: 0.3rem 0.7rem; border: 1px solid var(--hairline); border-radius: 20px;
  color: var(--muted); cursor: pointer; background: transparent;
}
.chip[aria-pressed="true"] { color: var(--paper); background: var(--accent); border-color: var(--accent); }

/* 门缝里的东西 */
.slips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1rem; }
.slip {
  font-size: 0.86rem; color: var(--ink-soft); font-style: italic;
  border: 1px dashed var(--hairline); border-radius: 20px; padding: 0.25rem 0.7rem;
}
.slip.used { color: var(--faint); border-style: solid; }
.slip .st { font-family: var(--mono); font-style: normal; font-size: 9px; letter-spacing: 0.1em; color: var(--accent); margin-left: 0.4rem; }

/* 投票（决定昼带走什么） */
.vote { border: 1px solid var(--accent); border-radius: 10px; padding: 1.4rem; margin: 2rem 0; background: var(--paper-2); }
.vote h3 { margin: 0 0 1rem; font-size: 1.2rem; font-weight: 700; color: var(--zhou); }
.vote__opt {
  display: flex; justify-content: space-between; gap: 1rem; align-items: center;
  width: 100%; text-align: left; cursor: pointer;
  border: 1px solid var(--hairline); border-radius: 6px; background: var(--paper);
  padding: 0.8rem 1rem; margin-bottom: 0.6rem; font-family: var(--serif); font-size: 1rem; color: var(--ink);
  transition: border-color 0.2s, background 0.2s;
}
.vote__opt:hover { border-color: var(--accent); }
.vote__opt[aria-pressed="true"] { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 9%, var(--paper)); }
.vote__opt .n { font-family: var(--mono); font-size: 11px; color: var(--muted); white-space: nowrap; }

/* toast */
.toast {
  position: fixed; left: 50%; bottom: 2rem; transform: translate(-50%, 1.5rem);
  background: var(--ink); color: var(--paper); font-size: 0.9rem;
  padding: 0.7rem 1.1rem; border-radius: 4px; opacity: 0; pointer-events: none;
  transition: opacity 0.25s, transform 0.25s; z-index: 50; max-width: 88vw;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast[data-kind="err"] { background: var(--zhou); }

/* overlay 引导 */
.overlay {
  position: fixed; inset: 0; background: rgba(20,18,15,0.5); backdrop-filter: blur(2px);
  display: flex; align-items: center; justify-content: center; padding: 1.5rem; z-index: 60;
}
.overlay__card {
  background: var(--paper); border: 1px solid var(--hairline); border-radius: 12px;
  padding: 2rem; max-width: 30rem; box-shadow: 0 20px 60px rgba(0,0,0,0.18);
}
.overlay__card h3 { margin: 0 0 0.8rem; font-size: 1.4rem; font-weight: 700; }
.overlay__card p { color: var(--ink-soft); font-size: 0.98rem; margin: 0 0 0.8rem; }
.overlay__close { margin-top: 0.6rem; }

/* 新内容到达动效 */
@keyframes arrive { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.arrive { animation: arrive 0.6s ease both; }

/* 移动端 */
@media (max-width: 640px) {
  body { font-size: 17px; }
  .letter.ye { padding-left: 1.2rem !important; border-left-width: 3px; }
  .page { padding-left: 1.2rem; padding-right: 1.2rem; }
}