:root {
  color-scheme: light;
  --bg: #e9ece7;
  --panel: #f8f9f6;
  --ink: #1d2320;
  --muted: #646e68;
  --line: #d4dad3;
  --accent: #2c5b4b;      /* 은행 스탠드 초록 */
  --accent-ink: #ffffff;
  --brass: #b8861b;       /* 스탠드 놋쇠 */
  --danger: #a23b3b;
  --screen: #0f1311;
  --radius-lg: 14px;
  --radius-sm: 8px;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #131715;
    --panel: #1b201d;
    --ink: #e4e9e5;
    --muted: #949f98;
    --line: #2c3430;
    --accent: #6fae94;
    --accent-ink: #0f1311;
    --brass: #e2b343;
    --danger: #e07a7a;
    --screen: #050706;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Pretendard Variable", Pretendard, -apple-system, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  font-size: 15px;
  line-height: 1.5;
}
[hidden] { display: none !important; }
h1, h2 { margin: 0; letter-spacing: -0.01em; }
h1 { font-size: 1.35rem; font-weight: 700; }
h2 { font-size: 1rem; font-weight: 650; }
.muted { color: var(--muted); }
.small { font-size: 0.82rem; }
.error { color: var(--danger); min-height: 1.4em; margin: 0.5rem 0 0; font-size: 0.88rem; }
.note { min-height: 1.4em; font-size: 0.88rem; }

/* 버튼·입력 */
button, input { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; border-radius: var(--radius-sm); padding: 0.55rem 0.95rem; font-weight: 600; }
button:disabled { opacity: 0.5; cursor: default; }
.primary { background: var(--accent); color: var(--accent-ink); }
.primary.is-stop { background: var(--danger); color: #fff; }
.ghost { background: transparent; border: 1px solid var(--line); }
.ghost:hover { border-color: var(--muted); }
.link { background: none; padding: 0; color: var(--muted); font-weight: 500; font-size: 0.82rem; }
.link:hover { color: var(--ink); text-decoration: underline; }
.danger-link { color: var(--danger); }
input {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg);
}
:focus-visible { outline: 2px solid var(--brass); outline-offset: 2px; }

/* 로그인 */
.auth { min-height: 100%; display: grid; place-items: center; padding: 1.5rem; }
.auth-card { width: min(380px, 100%); background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 2rem 1.75rem; }
.auth-card > .muted { margin: 0.25rem 0 1.25rem; }
.tabs { display: flex; gap: 0.25rem; border-bottom: 1px solid var(--line); margin-bottom: 1rem; }
.tab { background: none; border-radius: 0; padding: 0.5rem 0.25rem; margin-right: 0.75rem; color: var(--muted); border-bottom: 2px solid transparent; }
.tab.is-on { color: var(--ink); border-bottom-color: var(--accent); }
.form { display: grid; gap: 0.85rem; }
.form label { display: grid; gap: 0.3rem; font-size: 0.88rem; font-weight: 550; }
.form small { color: var(--muted); font-weight: 400; }

/* 상단 */
.app { height: 100dvh; display: grid; grid-template-rows: auto 1fr; }
.top {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1.5rem;
  align-items: center;
  padding: 0.9rem 1.25rem;
  border-bottom: 1px solid var(--line);
}
.conn { margin: 0; font-size: 0.8rem; color: var(--muted); }
.conn.is-on::before { content: ""; display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); margin-right: 0.35rem; vertical-align: 1px; }
.conn.is-off { color: var(--danger); }
.who { display: flex; align-items: center; gap: 0.75rem; min-width: 0; }
.count { font-size: 0.85rem; color: var(--muted); white-space: nowrap; font-variant-numeric: tabular-nums; }
.members { list-style: none; display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0; padding: 0; }
.members li { font-size: 0.85rem; padding: 0.2rem 0.6rem; border: 1px solid var(--line); border-radius: 999px; background: var(--panel); }
.members li.is-sharing { border-color: var(--accent); }
.members li.is-sharing::after { content: " 공유 중"; color: var(--accent); font-size: 0.75rem; }
.members .lv { color: var(--muted); font-size: 0.75rem; margin-left: 0.25rem; }
.me { min-width: 210px; }
.me-main { display: flex; align-items: baseline; gap: 0.5rem; }
.level { font-size: 0.78rem; font-weight: 700; color: var(--brass); }
.me p { margin: 0.1rem 0; }
.today-bar, .pomo-bar { height: 4px; border-radius: 2px; background: var(--line); overflow: hidden; margin: 0.35rem 0 0.15rem; }
.today-bar span, .pomo-bar span { display: block; height: 100%; width: 0; background: var(--brass); transition: width 0.4s; }
.me-actions { display: flex; gap: 0.75rem; margin-top: 0.3rem; }

/* 본문 */
.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 1rem;
  padding: 1rem 1.25rem 1.25rem;
  min-height: 0;
}
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 1rem 1.1rem; min-height: 0; }
.panel-head { display: flex; align-items: baseline; justify-content: space-between; gap: 0.5rem; margin-bottom: 0.6rem; }

/* 작업실 */
.stage { display: flex; flex-direction: column; overflow: auto; }
.stage-head { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.9rem; flex-wrap: wrap; }
.stage-actions { margin-left: auto; display: flex; gap: 0.5rem; }
.empty { color: var(--muted); padding: 3rem 1rem; text-align: center; border: 1px dashed var(--line); border-radius: var(--radius-sm); margin: 0; }

.grid { display: grid; gap: 0.6rem; grid-template-columns: 1fr; align-content: start; }
.grid[data-count="2"], .grid[data-count="3"], .grid[data-count="4"] { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid[data-count="5"], .grid[data-count="6"] { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid[data-count="1"] .tile { max-width: 960px; }

.tile {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  padding: 0;
  border-radius: 10px;
  background: var(--screen);
  overflow: hidden;
  border: 2px solid transparent;
}
.tile:hover { border-color: var(--brass); }
.tile video { width: 100%; height: 100%; object-fit: contain; display: block; }
.tile-name {
  position: absolute; left: 0.5rem; bottom: 0.5rem;
  font-size: 0.8rem; font-weight: 600; color: #fff;
  background: rgba(0, 0, 0, 0.55); padding: 0.15rem 0.5rem; border-radius: 6px;
}
.tile-wait { display: none; position: absolute; inset: 0; place-items: center; color: #b9c2bc; font-size: 0.85rem; font-weight: 500; }
.tile.waiting .tile-wait { display: grid; }

.stage:not(.is-focus) .focus-main, .stage:not(.is-focus) .focus-strip { display: none; }
.stage.is-focus .grid { display: none; }
.focus-main .tile { max-height: calc(100dvh - 300px); aspect-ratio: auto; height: calc(100dvh - 300px); }
.focus-main .tile:hover { border-color: transparent; cursor: zoom-out; }
.focus-strip { display: flex; gap: 0.5rem; margin-top: 0.6rem; overflow-x: auto; }
.focus-strip .tile { width: 170px; flex: none; }

/* 사이드 */
.side { display: grid; grid-template-rows: minmax(0, 1fr) auto; gap: 1rem; min-height: 0; }
.chat { display: flex; flex-direction: column; }
.chat-list { list-style: none; margin: 0; padding: 0 0.15rem 0 0; flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 0.6rem; min-height: 120px; }
.msg-head { display: flex; gap: 0.5rem; align-items: baseline; }
.msg-head b { font-size: 0.85rem; }
.msg-head time { font-size: 0.72rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.msg p { margin: 0.1rem 0 0; white-space: pre-wrap; overflow-wrap: anywhere; }
.msg.mine b { color: var(--accent); }
.chat-form { display: flex; gap: 0.5rem; margin-top: 0.75rem; }

.pomo-mode { font-size: 0.82rem; font-weight: 600; color: var(--muted); }
.pomo-mode.is-break { color: var(--accent); }
.pomo-time {
  margin: 0.2rem 0 0;
  text-align: center;
  font-size: 3.4rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}
.pomo.is-running .pomo-time { color: var(--brass); }
.pomo-set { display: flex; justify-content: center; gap: 1.25rem; margin: 0.75rem 0; font-size: 0.85rem; }
.pomo-set input { width: 3.6rem; padding: 0.3rem 0.4rem; text-align: center; display: inline-block; }
.pomo-btns { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0.5rem; }

/* 대화상자 */
.dlg { border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--panel); color: var(--ink); padding: 1.4rem; width: min(640px, 92vw); }
.dlg.narrow { width: min(380px, 92vw); }
.dlg::backdrop { background: rgba(0, 0, 0, 0.45); }
.dlg h2 { margin-bottom: 1rem; }
.row { display: flex; gap: 0.5rem; align-items: end; }
.row.end { justify-content: flex-end; }
.grow { flex: 1; display: grid; gap: 0.3rem; font-size: 0.88rem; font-weight: 550; }
.table-wrap { overflow-x: auto; margin-top: 0.75rem; }
table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th, td { text-align: left; padding: 0.5rem 0.4rem; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--muted); font-weight: 550; }
td .link { margin-right: 0.6rem; }

/* 안내 */
.block { position: fixed; inset: 0; background: rgba(0, 0, 0, 0.55); display: grid; place-items: center; padding: 1rem; z-index: 20; }
.block-card { background: var(--panel); border-radius: var(--radius-lg); padding: 1.6rem; max-width: 380px; }
.toast {
  position: fixed; left: 50%; bottom: 1.25rem; transform: translateX(-50%);
  background: var(--ink); color: var(--bg); padding: 0.6rem 1rem; border-radius: var(--radius-sm);
  font-size: 0.88rem; opacity: 0; pointer-events: none; transition: opacity 0.2s; z-index: 30; max-width: 90vw;
}
.toast.is-on { opacity: 1; }

/* 작은 화면 */
@media (max-width: 900px) {
  .app { height: auto; min-height: 100dvh; }
  .top { grid-template-columns: 1fr; gap: 0.75rem; }
  .layout { grid-template-columns: 1fr; }
  .side { grid-template-rows: auto auto; }
  .chat-list { max-height: 50vh; }
  .grid[data-count="5"], .grid[data-count="6"] { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .focus-main .tile { height: auto; aspect-ratio: 16 / 9; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}