/* ===========================================================================
   한마디 실험실 · 공통 요소 (2판 · 편집형 무대 체계)
   무대(어두운 초록) 위에 종이(밝은 면)를 얹는다. 직각, 1px 선, 모노 라벨, 명조 제목.
   =========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
html.instant-scroll { scroll-behavior: auto !important; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: var(--step-0);
  line-height: 1.65;
  letter-spacing: -.01em;
  color: var(--text);
  background: var(--stage);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-synthesis: none;
  overscroll-behavior-y: contain;
}

h1, h2, h3, h4 { margin: 0; line-height: 1.2; font-weight: 500; letter-spacing: -.06em; word-break: keep-all; }
h1, h2 { font-family: var(--font-serif); }
h1 { font-size: var(--step-3); }
h2 { font-size: var(--step-2); }
h3 { font-family: var(--font-serif); font-size: var(--step-1); font-weight: 600; letter-spacing: -.04em; }
h4 { font-size: var(--step-0); font-weight: 700; letter-spacing: -.02em; }
p  { margin: 0; word-break: keep-all; }
em { font-style: normal; color: var(--flower); }
img, canvas, video { max-width: 100%; display: block; }
a { color: inherit; text-underline-offset: .2em; }
button, input, select, textarea { font: inherit; letter-spacing: inherit; }
button { cursor: pointer; }

:focus-visible { outline: 3px solid var(--coral); outline-offset: 3px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.hidden { display: none !important; }

/* --- 편집형 라벨 --------------------------------------------------------- */
.eyebrow, .mono {
  font-family: var(--font-mono);
  font-size: var(--step--2);
  font-weight: 500;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.eyebrow--coral, .index { color: var(--coral); }
.index { font-family: var(--font-mono); font-size: var(--step--2); letter-spacing: .12em; }
.kicker {
  display: flex; align-items: center; gap: 14px;
  font-family: var(--font-mono); font-size: var(--step--2); letter-spacing: .14em; text-transform: uppercase;
  color: var(--text-soft);
}
.kicker::before { content: ''; width: 22px; height: 1px; background: var(--coral); flex: none; }
.kicker b { color: var(--flower); font-weight: 500; }

/* 상표 — 한(마)디 */
.k-mark { font-weight: 800; letter-spacing: -.11em; color: var(--text); }
.k-mark em { color: var(--flower); }

/* --- 버튼 ---------------------------------------------------------------- */
.btn {
  -webkit-appearance: none; appearance: none;
  display: inline-flex; align-items: center; justify-content: center; gap: .8em;
  min-height: var(--touch);
  padding: .7em 1.2em;
  font: inherit; font-size: var(--step--1); font-weight: 700; letter-spacing: -.02em;
  color: var(--text);
  background: transparent;
  border: 1px solid var(--rule-strong);
  border-radius: 0;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: transform .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease), color .18s var(--ease), box-shadow .18s var(--ease);
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.btn:hover:not(:disabled) { border-color: var(--text); transform: translateY(-2px); }
.btn:active:not(:disabled) { transform: translateY(0); }
.btn:disabled { opacity: .45; cursor: not-allowed; }

.btn--primary {
  color: var(--on-primary);
  background: var(--coral);
  border-color: var(--coral);
}
.btn--primary:hover:not(:disabled) { border-color: var(--coral); box-shadow: 0 12px 25px rgba(0,0,0,.28); }

.btn--accent {
  color: var(--event-ink);
  background: color-mix(in srgb, var(--event-paper) 92%, var(--event-sage));
  border-color: transparent;
}
.btn--accent:hover:not(:disabled) { background: var(--event-paper); border-color: transparent; }

.btn--ghost { border-color: transparent; color: var(--text-soft); }
.btn--ghost:hover:not(:disabled) { color: var(--text); border-color: transparent; background: var(--stage-3); transform: none; }

.btn--danger { color: var(--flower); border-color: color-mix(in srgb, var(--flower) 55%, transparent); }
.btn--danger:hover:not(:disabled) { background: var(--danger-bg); border-color: var(--flower); }

.btn--lg { min-height: var(--touch-lg); padding: .8em 1.4em; font-size: var(--step-0); }
.btn--sm { min-height: 38px; padding: .45em .9em; font-size: var(--step--1); }
.btn--block { display: flex; width: 100%; }
.btn--icon { padding: 0; width: var(--touch); min-height: var(--touch); }

/* 주 행동 — 왼쪽 글, 오른쪽 화살 */
.btn--main { justify-content: space-between; min-width: 260px; text-align: left; padding-inline: 20px; }
.btn--main .arrow, .btn .arrow { font-size: 1.5em; font-weight: 400; line-height: 1; }

/* 밑줄 링크형 (조용한 행동) */
.quiet {
  display: inline-flex; align-items: center; gap: 14px;
  padding: 10px 0; border: 0; border-bottom: 1px solid var(--rule-strong);
  background: transparent; color: var(--text-soft);
  font-size: var(--step--1); font-weight: 600; cursor: pointer; text-decoration: none; white-space: nowrap;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.quiet span, .quiet .arrow { color: var(--coral); font-size: 1.3em; line-height: 1; }
.quiet:hover:not(:disabled) { color: var(--text); border-color: var(--text); }
.quiet:disabled { opacity: .45; cursor: not-allowed; }

/* --- 폼 ------------------------------------------------------------------ */
.field { display: block; margin-block: var(--s3); }
.field > .field__label,
.field-label {
  display: block; margin-bottom: .45em;
  font-size: var(--step--1); font-weight: 700; color: var(--text-soft);
}
.field__hint { display: block; margin-top: .45em; font-size: var(--step--1); line-height: 1.6; color: var(--text-faint); }

input[type="text"], input[type="password"], input[type="number"], input[type="search"],
input[type="url"], input[type="email"], select, textarea {
  -webkit-appearance: none; appearance: none;
  width: 100%;
  min-height: var(--touch);
  padding: .65em .9em;
  font: inherit;
  color: var(--event-ink);
  background: color-mix(in srgb, var(--event-paper) 96%, #fff);
  border: 1px solid color-mix(in srgb, var(--event-sage) 70%, var(--event-ink));
  border-radius: 0;
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease);
}
textarea { min-height: 6em; resize: vertical; line-height: 1.55; }
select {
  background-image: linear-gradient(45deg, transparent 50%, var(--event-ink) 50%), linear-gradient(135deg, var(--event-ink) 50%, transparent 50%);
  background-position: calc(100% - 20px) 50%, calc(100% - 14px) 50%;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  padding-right: 2.6em;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--coral);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--coral) 28%, transparent);
  outline: none;
}
input[type="color"] { width: 64px; height: 44px; min-height: 44px; padding: 3px; cursor: pointer; background: var(--stage-3); border: 1px solid var(--rule-strong); }
input:invalid:not(:placeholder-shown) { border-color: var(--flower); }
::placeholder { color: color-mix(in srgb, var(--event-ink) 45%, var(--event-paper)); }

input[type="range"] {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 34px; background: transparent; cursor: pointer; border: 0; min-height: 0; padding: 0;
}
input[type="range"]::-webkit-slider-runnable-track { height: 2px; background: var(--rule-strong); }
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 26px; height: 26px; margin-top: -12px; border-radius: 50%;
  background: var(--coral); border: 3px solid var(--stage); box-shadow: 0 0 0 1px var(--coral);
}
input[type="range"]::-moz-range-track { height: 2px; background: var(--rule-strong); }
input[type="range"]::-moz-range-thumb { width: 22px; height: 22px; border-radius: 50%; background: var(--coral); border: 3px solid var(--stage); }

/* 체크 항목 — 아래 선으로 구분되는 편집형 목록 */
.check {
  display: grid; grid-template-columns: auto 1fr; gap: 1em;
  align-items: start;
  padding: var(--s3) .2rem;
  margin: 0;
  background: transparent;
  border: 0; border-bottom: 1px solid var(--rule);
  cursor: pointer;
  transition: background .18s var(--ease);
}
.check:hover { background: color-mix(in srgb, var(--text) 4%, transparent); }
.check:has(input:focus-visible) { outline: 3px solid var(--coral); outline-offset: 2px; }
.check input { width: 26px; height: 26px; margin: 2px 0 0; accent-color: var(--coral); flex: none; cursor: pointer; }
.check__text { font-weight: 600; line-height: 1.55; }
.check__text small { display: block; margin-top: .3em; font-weight: 400; font-size: var(--step--1); color: var(--text-faint); }
.check__req { font-weight: 700; color: var(--coral); margin-right: .35em; }
.check__opt { font-weight: 700; color: var(--sage); margin-right: .35em; }

/* --- 카드 · 패널 --------------------------------------------------------- */
.card, .panel {
  background: var(--stage-2);
  border: 1px solid var(--rule-strong);
  padding: var(--s4);
}
.panel { padding: var(--s3); }
.paper {
  background: var(--paper); color: var(--ink);
  --text: var(--ink); --text-soft: var(--ink-soft); --text-faint: var(--ink-faint);
  --rule: var(--ink-rule); --rule-strong: color-mix(in srgb, var(--event-ink) 45%, var(--event-paper));
  --stage-2: color-mix(in srgb, var(--event-paper) 94%, var(--event-sage));
  --stage-3: color-mix(in srgb, var(--event-paper) 86%, var(--event-sage));
  --ok: #2f7d52; --ok-bg: #e6f3ea; --warn: #8a5a10; --warn-bg: #fbf0d8; --danger: #a93226; --danger-bg: #fbe9e7; --info: #2c6c96; --info-bg: #e5f0f7;
}
.paper em { color: #976963; }
.stack > * + * { margin-top: var(--s3); }
.row { display: flex; gap: var(--s2); flex-wrap: wrap; align-items: center; }
.row--end { justify-content: flex-end; }
.row--between { justify-content: space-between; }
.grow { flex: 1 1 auto; min-width: 0; }
.rule { border: 0; border-top: 1px solid var(--rule); margin: var(--s3) 0; }

/* --- 배지 ---------------------------------------------------------------- */
.badge {
  display: inline-flex; align-items: center; gap: .45em;
  padding: .3em .7em;
  font-family: var(--font-mono); font-size: var(--step--2); font-weight: 500; letter-spacing: .06em; line-height: 1.5;
  border: 1px solid var(--rule-strong);
  color: var(--text-soft);
  white-space: nowrap;
}
.badge--ok     { border-color: transparent; background: var(--ok-bg);     color: var(--ok); }
.badge--warn   { border-color: transparent; background: var(--warn-bg);   color: var(--warn); }
.badge--danger { border-color: transparent; background: var(--danger-bg); color: var(--danger); }
.badge--info   { border-color: transparent; background: var(--info-bg);   color: var(--info); }
.badge--paper  { border-color: transparent; background: var(--paper); color: var(--ink); }
.badge__dot { width: .55em; height: .55em; border-radius: 50%; background: currentColor; flex: none; }

/* --- 알림 문구 ------------------------------------------------------------ */
.notice {
  padding: var(--s3) var(--s3) var(--s3) calc(var(--s3) + 4px);
  border-left: 2px solid var(--coral);
  background: color-mix(in srgb, var(--event-paper) 92%, var(--event-sage));
  color: var(--event-ink);
  font-size: var(--step--1);
  line-height: 1.7;
}
.notice strong { color: inherit; font-weight: 700; }
.notice ul { margin: .5em 0 0; padding-left: 1.2em; }
.notice li + li { margin-top: .35em; }
.notice--ok     { border-color: #2f7d52; }
.notice--warn   { border-color: #c98a1e; background: #fbf0d8; }
.notice--danger { border-color: #a93226; background: #fbe9e7; }
.notice--info   { border-color: var(--sage); }
.notice--quiet  { background: transparent; color: var(--text-soft); border-color: var(--rule-strong); }

/* --- 토스트 -------------------------------------------------------------- */
#toast-region {
  position: fixed; left: 50%; bottom: max(1.4rem, env(safe-area-inset-bottom));
  transform: translateX(-50%);
  display: flex; flex-direction: column; gap: .5rem; align-items: center;
  z-index: 90; pointer-events: none; width: min(92vw, 34rem);
}
.toast {
  pointer-events: auto;
  width: 100%;
  padding: .9em 1.2em;
  font-size: var(--step--1); font-weight: 600; line-height: 1.55;
  color: var(--event-ink);
  background: color-mix(in srgb, var(--event-paper) 94%, var(--event-sage));
  border: 1px solid var(--coral);
  box-shadow: var(--shadow-3);
  animation: toast-in .28s var(--ease-out);
}
.toast--ok     { border-color: #2f7d52; }
.toast--warn   { border-color: #c98a1e; background: #fbf0d8; }
.toast--danger { border-color: #a93226; background: #fbe9e7; }
.toast--out { animation: toast-out .24s var(--ease) forwards; }
@keyframes toast-in  { from { opacity: 0; transform: translateY(14px); } }
@keyframes toast-out { to   { opacity: 0; transform: translateY(8px); } }

/* --- 대화상자 ------------------------------------------------------------ */
dialog {
  width: min(94vw, 44rem);
  max-height: 88dvh;
  padding: 0;
  color: var(--text);
  background: var(--stage-1);
  border: 1px solid var(--rule-strong);
  box-shadow: var(--shadow-3);
  overflow: hidden;
}
dialog.dialog--wide { width: min(96vw, 60rem); }
dialog.dialog--device { width: min(96vw, 38rem); max-height: 88dvh; }
dialog.dialog--device[open] { display: flex; flex-direction: column; }
dialog.dialog--device:not([open]) { display: none; }
dialog::backdrop { background: var(--overlay); backdrop-filter: blur(3px); }
dialog[open] { animation: dialog-in .26s var(--ease-out); }
@keyframes dialog-in { from { opacity: 0; transform: translateY(18px); } }

.dialog__head {
  display: flex; align-items: flex-start; gap: var(--s3);
  padding: var(--s4) var(--s4) var(--s3);
  border-bottom: 1px solid var(--rule);
}
.dialog__head h2 { font-size: var(--step-2); }
.dialog__body { padding: var(--s4); overflow-y: auto; max-height: calc(88dvh - 13rem); overscroll-behavior: contain; }
.dialog__foot {
  display: flex; gap: var(--s2); justify-content: flex-end; flex-wrap: wrap;
  padding: var(--s3) var(--s4) var(--s4);
  border-top: 1px solid var(--rule);
  background: var(--stage-0);
}
.dialog--device .dialog__head,
.dialog--device .dialog__foot { flex: none; }
.dialog--device .dialog__body { flex: 1 1 auto; min-height: 0; max-height: none; }
.dialog--device .dialog__foot { padding-bottom: max(var(--s4), env(safe-area-inset-bottom)); }
.dialog__close {
  margin-left: auto; flex: none;
  width: 44px; height: 44px;
  font-size: 1.4rem; line-height: 1;
  color: var(--text-soft); background: transparent;
  border: 1px solid var(--rule-strong); cursor: pointer;
}
.dialog__close:hover { color: var(--text); border-color: var(--text); }

@media (max-width: 520px) {
  .dialog--device .dialog__foot { display: grid; grid-template-columns: minmax(0, .55fr) minmax(0, 1fr); }
  .dialog--device .dialog__foot .btn { width: 100%; min-width: 0; padding-inline: .7em; white-space: normal; }
}

/* --- 로딩 ---------------------------------------------------------------- */
.spinner {
  width: 1.1em; height: 1.1em; flex: none;
  border: 2px solid currentColor; border-right-color: transparent;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.skeleton {
  background: linear-gradient(90deg, var(--stage-3) 25%, var(--stage-2) 50%, var(--stage-3) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  min-height: 1em;
}
@keyframes shimmer { to { background-position: -200% 0; } }

/* --- 표 ------------------------------------------------------------------ */
.table { width: 100%; border-collapse: collapse; font-size: var(--step--1); }
.table th, .table td { padding: .7em .8em; text-align: left; border-bottom: 1px solid var(--rule); vertical-align: top; }
.table th { font-family: var(--font-mono); font-size: var(--step--2); letter-spacing: .1em; text-transform: uppercase; font-weight: 500; color: var(--text-faint); background: var(--stage-1); position: sticky; top: 0; z-index: 1; }
.table tbody tr:hover { background: var(--stage-2); }
.table--scroll { overflow: auto; max-height: 60vh; border: 1px solid var(--rule-strong); }

/* --- 연결 상태 표시 ------------------------------------------------------- */
.conn {
  display: inline-flex; align-items: center; gap: .55em;
  font-family: var(--font-mono); font-size: var(--step--2); letter-spacing: .1em; text-transform: uppercase; font-weight: 500;
  color: var(--text-faint); white-space: nowrap;
}
.conn__dot { width: 9px; height: 9px; border-radius: 50%; background: var(--text-faint); flex: none; }
.conn[data-state="live"]    .conn__dot { background: var(--coral); box-shadow: 0 0 0 4px color-mix(in srgb, var(--coral) 22%, transparent); animation: pulse 2.4s infinite; }
.conn[data-state="live"]    { color: var(--text-soft); }
.conn[data-state="offline"] .conn__dot { background: var(--danger); }
.conn[data-state="offline"] { color: var(--danger); }
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 color-mix(in srgb, var(--coral) 55%, transparent); }
  70%  { box-shadow: 0 0 0 .6em transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

/* --- 음량 막대 (장치 점검 대화상자) --------------------------------------- */
.meter { width: 100%; height: 12px; background: var(--stage-3); border: 1px solid var(--rule-strong); overflow: hidden; }
.meter__fill { height: 100%; width: 0%; background: linear-gradient(90deg, var(--sage), var(--coral) 72%, var(--flower)); transition: width .08s linear; }

/* --- 음량 막대 (콘솔) ------------------------------------------------------ */
.bars { height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 3px; overflow: hidden; }
.bars i { flex: 1; max-width: 7px; height: var(--h, 4px); min-height: 2px; background: var(--sage); transition: height .1s linear; }
.bars--paper i { background: #65836c; }
.bars--live i { background: var(--flower); }

/* --- 편지 카드 (결과물 · 화면용) ------------------------------------------- */
.letter {
  --text: #2a3e30;
  display: flex; flex-direction: column;
  padding: 28px;
  color: #2a3e30; background: #f1ebdf;
  box-shadow: 18px 20px 45px #0b1b1388;
}
.letter__head, .letter__foot {
  display: flex; justify-content: space-between; gap: 15px; align-items: center;
  font-family: var(--font-mono); font-size: var(--step--2); letter-spacing: .04em; text-transform: uppercase; color: #54705b;
}
.letter__head { border-bottom: 1px solid #8e9d8b; padding-bottom: 13px; }
.letter__to { margin: 34px 0 12px; font-size: var(--step--1); color: #54705b; }
.letter__line { font-family: var(--font-serif); font-weight: 500; font-size: clamp(22px, 2.6vw, 40px); line-height: 1.35; letter-spacing: -.06em; word-break: keep-all; white-space: pre-line; }
.letter__wave { margin-top: auto; padding-top: 20px; }
.letter__wave .bars { height: 40px; gap: 2px; opacity: .65; }
.letter__wave .bars i { background: #65836c; max-width: 4px; }
.letter__foot { border-top: 1px solid #8e9d8b; padding-top: 14px; margin-top: 12px; }

/* --- 인쇄 ---------------------------------------------------------------- */
@media print {
  body { background: #fff; color: #000; }
  .no-print, #toast-region, dialog { display: none !important; }
  .card, .panel { box-shadow: none; border-color: #999; break-inside: avoid; }
}

/* --- 코너 선 그림 아이콘 ---------------------------------------------------- */
.cat-icon { display: inline-block; vertical-align: -.22em; flex: none; }
.emotion__icon .cat-icon { width: 30px; height: 30px; vertical-align: 0; }
.badge .cat-icon { margin-right: .1em; }