/* 찰나 타이머 (시계 · 타이머 · 스톱워치 · 쉬는시간 타이머) — 모든 규칙은 .ckt 안에서만 */
.ckt{ --c-paper:#FFFFFF; --c-ink:#1B1F1B; --c-go:#2E9E6D; --c-go-deep:#1E7A50; --c-violet:#6B4FD8; --c-violet-soft:#F0ECFC; --c-red:#D9473F;
  --c-muted:rgba(27,31,27,.55); --c-line:rgba(27,31,27,.12); --c-tile:#F3F4F1; --c-card:#FFFFFF; --c-digit:#1B1F1B;
  font-family:'Noto Sans KR', system-ui, -apple-system, 'Apple SD Gothic Neo', sans-serif; color:var(--c-ink); line-height:1.6; word-break:keep-all; text-align:left;
  max-width:880px; margin:0 auto; padding:0 16px 28px; box-sizing:border-box; }
.ckt *, .ckt *::before, .ckt *::after{ box-sizing:border-box; }
.ckt [hidden]{ display:none !important; }
.ckt button, .ckt input, .ckt select{ font-family:inherit; color:inherit; }
.ckt button{ cursor:pointer; -webkit-tap-highlight-color:transparent; }
.ckt button:focus-visible, .ckt input:focus-visible, .ckt select:focus-visible{ outline:3px solid var(--c-go); outline-offset:2px; }
.ckt-bar{ margin:0 0 12px; }
.ckt-tabs{ display:grid; grid-template-columns:repeat(5,1fr); gap:4px; background:var(--c-tile); border-radius:14px; padding:4px; }
.ckt-tabs button{ border:none; background:transparent; border-radius:10px; padding:8px 2px; font-size:clamp(12.5px,3.3vw,15px); font-weight:700; color:var(--c-muted); line-height:1.25; display:flex; align-items:center; justify-content:center; text-align:center; min-height:40px; }
.ckt-tabs button.on{ background:var(--c-card); color:var(--c-ink); box-shadow:0 1px 3px rgba(0,0,0,.1); }
.ckt-tools{ display:flex; gap:6px; justify-content:flex-end; margin:8px 0 0; }
.ckt-ibtn{ height:38px; border-radius:999px; border:1px solid var(--c-line); background:var(--c-card); padding:0 14px; font-size:14px; font-weight:700; display:flex; align-items:center; gap:6px; white-space:nowrap; }
.ckt-ibtn svg{ width:16px; height:16px; }
.ckt-ibtn.on{ background:var(--c-ink); color:var(--c-paper); border-color:var(--c-ink); }
.ckt-panel{ display:none; }
.ckt-panel.on{ display:block; }
.ckt-stage{ position:relative; border-radius:24px; background:var(--c-tile); padding:clamp(20px,5vw,40px) 16px; text-align:center; display:flex; flex-direction:column; align-items:center; justify-content:center; min-height:clamp(220px,42vh,380px); transition:background .3s; }
.ckt-digits{ font-weight:700; font-variant-numeric:tabular-nums; letter-spacing:-.02em; line-height:1; color:var(--c-digit); font-size:clamp(56px,17vw,150px); white-space:nowrap; }
.ckt-digits small{ font-size:.4em; font-weight:500; margin-left:.12em; opacity:.6; letter-spacing:0; }
.ckt-digits .ap{ font-size:.32em; font-weight:700; margin-right:.2em; opacity:.6; vertical-align:.9em; letter-spacing:0; }
.ckt-label{ font-size:clamp(15px,3.6vw,20px); font-weight:500; color:var(--c-muted); margin:0 0 10px; }
.ckt-label b{ color:var(--c-ink); }
.ckt-ctrls{ display:flex; justify-content:center; gap:10px; flex-wrap:wrap; margin:16px 0 0; }
.ckt-btn{ font-weight:700; font-size:17px; background:var(--c-ink); color:var(--c-paper); border:2px solid var(--c-ink); padding:13px 30px; border-radius:14px; min-width:120px; }
.ckt-btn.go{ background:var(--c-go); border-color:var(--c-go); color:#fff; }
.ckt-btn.out{ background:var(--c-card); color:var(--c-ink); border-color:var(--c-line); }
.ckt-btn:active{ transform:scale(.97); }
.ckt-btn:disabled{ opacity:.35; cursor:default; transform:none; }
.ckt-chips{ display:flex; flex-wrap:wrap; gap:8px; justify-content:center; margin:14px 0 0; }
.ckt-chip{ border:2px solid var(--c-line); background:var(--c-card); border-radius:999px; padding:7px 14px; font-size:14px; font-weight:700; }
.ckt-chip.sm{ padding:4px 12px; }
.ckt-chip.on{ background:var(--c-ink); color:var(--c-paper); border-color:var(--c-ink); }
.ckt-opts{ display:flex; flex-wrap:wrap; gap:8px 16px; justify-content:center; align-items:center; margin:14px 0 0; font-size:14px; color:var(--c-muted); }
.ckt-opts label{ display:flex; align-items:center; gap:6px; cursor:pointer; }
.ckt-opts input{ width:18px; height:18px; accent-color:var(--c-go); margin:0; }
.ckt-small-sel{ -webkit-appearance:none; appearance:none; font-size:14px; font-weight:700; border:2px solid var(--c-line); border-radius:12px; padding:6px 32px 6px 12px; color:var(--c-ink); background:var(--c-card) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5l5 5 5-5' fill='none' stroke='%23888' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat right 11px center / 12px 8px; }
.ckt-sws{ display:flex; gap:6px; align-items:center; }
.ckt-zrow{ display:flex; gap:10px; align-items:center; justify-content:center; flex-basis:100%; min-width:0; }
.ckt-zrow .ckt-sel{ width:clamp(130px,42vw,230px); min-width:0; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
@media (max-width:420px){ .ckt-zrow .ckt-sws{ gap:4px; } .ckt-zrow .ckt-sw{ width:24px; height:24px; } }
.ckt-sw{ width:26px; height:26px; border-radius:50%; border:3px solid #fff; box-shadow:0 0 0 1.5px var(--c-line); padding:0; }
.ckt-sw.on{ box-shadow:0 0 0 2.5px var(--c-ink); }
.ckt-date{ font-size:clamp(16px,4vw,24px); font-weight:500; color:var(--c-muted); margin:14px 0 0; }
.ckt-ad{ margin:16px auto 0; max-width:728px; }
.ckt-ad:empty{ display:none; }
.ckt-ring{ position:relative; width:min(78vw,340px); aspect-ratio:1; display:flex; align-items:center; justify-content:center; }
.ckt-ring svg{ position:absolute; inset:0; width:100%; height:100%; transform:rotate(-90deg); }
.ckt-ring .bg{ fill:none; stroke:rgba(27,31,27,.08); stroke-width:10; }
.ckt-ring .fg{ fill:none; stroke:var(--c-go); stroke-width:10; stroke-linecap:round; transition:stroke .3s; }
.ckt-ring .ckt-digits{ font-size:clamp(44px,13vw,76px); }
.ckt-ring .ckt-digits.long{ font-size:clamp(36px,10.5vw,62px); }
.ckt-setter{ display:flex; align-items:flex-end; justify-content:center; gap:6px; }
.ckt-setter .col{ display:flex; flex-direction:column; align-items:center; gap:4px; }
.ckt-setter .col small{ font-size:13px; color:var(--c-muted); font-weight:500; }
.ckt-setter input{ width:clamp(70px,20vw,110px); font-size:clamp(40px,11vw,64px); font-weight:700; text-align:center; border:2px solid var(--c-line); border-radius:14px; padding:4px 0; background:var(--c-card); color:var(--c-ink); font-variant-numeric:tabular-nums; }
.ckt-setter .colon{ font-size:clamp(36px,10vw,56px); font-weight:700; padding-bottom:10px; opacity:.4; }
.ckt .step{ display:flex; gap:4px; }
.ckt .step button{ border:1px solid var(--c-line); background:var(--c-card); border-radius:8px; width:34px; height:28px; font-weight:900; font-size:16px; line-height:1; padding:0; }
.ckt-stage.ring-done{ animation:cktFlash .8s infinite; }
@keyframes cktFlash{ 50%{ background:#FBE0DD; } }
.ckt-laps{ max-width:520px; margin:16px auto 0; border-collapse:collapse; width:100%; font-variant-numeric:tabular-nums; }
.ckt-laps th{ font-size:13px; color:var(--c-muted); font-weight:500; text-align:right; padding:6px 10px; border-bottom:1px solid var(--c-line); }
.ckt-laps td{ text-align:right; padding:8px 10px; border-bottom:1px solid var(--c-line); font-size:16px; font-weight:500; }
.ckt-laps th:first-child, .ckt-laps td:first-child{ text-align:left; }
.ckt-laps tr.best td{ color:var(--c-go-deep); font-weight:700; } .ckt-laps tr.worst td{ color:var(--c-red); font-weight:700; }
.ckt-badge{ display:inline-flex; align-items:center; font-weight:900; font-size:clamp(20px,5vw,30px); padding:6px 18px; border-radius:999px; margin:0 0 10px; }
.ckt-badge.class, .ckt-badge.work{ background:var(--c-violet); color:#fff; } .ckt-badge.break{ background:var(--c-go); color:#fff; } .ckt-badge.lunch{ background:#F08A24; color:#fff; }
.ckt-badge.off{ background:var(--c-card); color:var(--c-muted); border:2px solid var(--c-line); }
.ckt-pbar{ width:min(100%,560px); height:14px; border-radius:7px; background:rgba(27,31,27,.08); overflow:hidden; margin:16px 0 6px; }
.ckt-pbar i{ display:block; height:100%; width:0; background:var(--c-violet); border-radius:7px; transition:width .5s; }
.ckt-next{ font-size:15px; color:var(--c-muted); }
.ckt-sched{ display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:10px; margin:16px 0 0; }
.ckt-field{ background:var(--c-card); border:1px solid var(--c-line); border-radius:14px; padding:10px 12px; }
.ckt-field small{ display:block; font-size:12.5px; color:var(--c-muted); font-weight:500; }
.ckt-field select, .ckt-field input{ width:100%; border:none; font-size:18px; font-weight:700; background:transparent; color:var(--c-ink); padding:2px 0; }
.ckt-field select option{ color:#1B1F1B; }
.ckt-presets{ display:flex; flex-wrap:wrap; gap:8px; margin:14px 0 0; }
.ckt-tbl{ width:100%; border-collapse:collapse; margin:14px 0 0; font-variant-numeric:tabular-nums; }
.ckt-tbl td{ padding:8px 10px; border-bottom:1px solid var(--c-line); font-size:15px; }
.ckt-tbl td:last-child{ text-align:right; color:var(--c-muted); }
.ckt-tbl tr.cur td{ background:var(--c-violet-soft); font-weight:700; }
.ckt-tbl tr.cur td:first-child{ border-radius:10px 0 0 10px; } .ckt-tbl tr.cur td:last-child{ border-radius:0 10px 10px 0; color:var(--c-ink); }
.ckt-tbl .k{ display:inline-block; width:10px; height:10px; border-radius:3px; margin-right:8px; }
.ckt-note{ font-size:13px; color:var(--c-muted); margin:12px 0 0; line-height:1.6; }
.ckt-note a{ color:inherit; text-decoration:underline; }
.ckt-disc{ text-align:center; margin-top:18px; }
.ckt-sub{ font-size:16px; margin:22px 0 0; }
.ckt-place{ position:absolute; left:20px; top:16px; font-size:clamp(14px,3.4vw,17px); font-weight:700; color:var(--c-muted); text-align:left; max-width:calc(100% - 40px); white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.ckt-panel.full .ckt-place{ left:24px; top:20px; font-size:clamp(16px,3vw,26px); }
/* 선택창: 글자와 화살표가 둥근 테두리 안쪽에 여유 있게 */
.ckt-sel{ -webkit-appearance:none; appearance:none; font:inherit; font-size:14px; font-weight:700; color:var(--c-ink); border:2px solid var(--c-line); border-radius:12px; background-color:var(--c-card);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5l5 5 5-5' fill='none' stroke='%23888' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:right 12px center; background-size:12px 8px; padding:7px 34px 7px 12px; max-width:100%; line-height:1.4; cursor:pointer; }
.ckt-sel.strong{ border-color:var(--c-ink); }
.ckt-sel option{ color:#1B1F1B; }
.ckt-world{ margin:22px 0 0; }
.ckt-whead{ display:flex; align-items:center; justify-content:space-between; gap:10px; flex-wrap:wrap; }
.ckt-wgrid{ display:grid; grid-template-columns:repeat(auto-fill,minmax(190px,1fr)); gap:10px; margin:12px 0 0; }
.ckt-wcard{ position:relative; background:var(--c-tile); border-radius:16px; padding:12px 14px; }
.ckt-wcard .nm{ font-size:14px; font-weight:700; padding-right:24px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.ckt-wcard .tm{ font-weight:700; font-size:34px; line-height:1.15; font-variant-numeric:tabular-nums; }
.ckt-wcard .df{ font-size:13px; color:var(--c-muted); }
.ckt-wcard .df b{ color:var(--c-ink); }
.ckt-wcard .pd{ display:inline-block; font-size:13px; font-weight:700; border-radius:999px; padding:1px 10px; margin:4px 0 2px; }
.ckt .pd-dawn{ background:#E4E1F7; color:#4A31A8; } .ckt .pd-morning{ background:#FFF1C7; color:#8A5A00; } .ckt .pd-noon{ background:#FFE2C2; color:#A54A00; }
.ckt .pd-afternoon{ background:#E0EEFC; color:#1D5A9E; } .ckt .pd-evening{ background:#FBE0DD; color:#A8332B; } .ckt .pd-night{ background:#DCDFE6; color:#2B3242; }
.ckt-wcard .x{ position:absolute; right:8px; top:8px; width:26px; height:26px; border-radius:50%; border:none; background:rgba(0,0,0,.06); font-size:13px; line-height:1; padding:0; color:var(--c-ink); }
.ckt-toast{ position:fixed; left:50%; top:80px; transform:translate(-50%,-8px); background:var(--c-ink); color:var(--c-paper); font-weight:700; font-size:15px; padding:9px 18px; border-radius:999px; opacity:0; transition:opacity .25s, transform .25s; pointer-events:none; z-index:1002; white-space:nowrap; }
.ckt-toast.show{ opacity:1; transform:translate(-50%,0); }
/* 어두운 화면: 찰나 타이머 전체에 */
.ckt.dark{ --c-paper:#0E1110; --c-ink:#F2F4F1; --c-muted:rgba(242,244,241,.6); --c-line:rgba(242,244,241,.16); --c-tile:#1A1E1C; --c-card:#232826; --c-violet-soft:#2A2440; color-scheme:dark;
  background:#0E1110; border-radius:20px; padding-top:14px; }
.ckt.dark .ckt-stage.ring-done{ animation-name:cktFlashDark; }
@keyframes cktFlashDark{ 50%{ background:#4A1C19; } }
.ckt.dark .ckt-ring .bg{ stroke:rgba(255,255,255,.12); }
.ckt.dark .ckt-pbar{ background:rgba(255,255,255,.12); }
.ckt.dark .ckt-wcard .x{ background:rgba(255,255,255,.1); }
/* 전체화면: 지금 보는 숫자 화면만 꽉 차게 */
.ckt-panel.full{ position:fixed; inset:0; z-index:1000; background:var(--c-paper); display:flex; flex-direction:column; padding:env(safe-area-inset-top,0px) env(safe-area-inset-right,0px) env(safe-area-inset-bottom,0px) env(safe-area-inset-left,0px); }
.ckt-panel.full .ckt-stage{ flex:1; border-radius:0; min-height:0; }
.ckt-panel.full .ckt-digits{ font-size:min(22vw, 34vh); }
.ckt-panel.full .ckt-ring{ width:min(80vw, 70vh); }
.ckt-panel.full .ckt-ring .ckt-digits{ font-size:min(14vw, 15vh); }
.ckt-panel.full .ckt-hf{ display:none !important; }
.ckt-panel.full .ckt-ctrls{ position:absolute; left:0; right:0; bottom:calc(20px + env(safe-area-inset-bottom,0px)); margin:0; opacity:.9; }
.ckt-exit{ position:fixed; right:calc(14px + env(safe-area-inset-right,0px)); top:calc(14px + env(safe-area-inset-top,0px)); z-index:1001; border:1px solid var(--c-line); background:var(--c-card); color:var(--c-ink); border-radius:999px; padding:8px 14px; font-weight:700; font-size:14px; }
@media (max-width:480px){ .ckt-btn{ min-width:100px; padding:12px 22px; } .ckt-tabs button{ font-size:12px; } }
/* 전광판 */
.ckt-board{ position:relative; overflow:hidden; border-radius:24px; height:clamp(200px,42vh,380px); background:var(--sg-bg,#0B0B0B); cursor:pointer; user-select:none; -webkit-user-select:none; }
.ckt-board .txt{ position:absolute; left:0; top:50%; white-space:nowrap; font-weight:900; line-height:1; color:var(--sg-fg,#FFE14D); will-change:transform; letter-spacing:.02em; }
.ckt-board.rainbow .txt span{ animation:cktRb 3s linear infinite; }
@keyframes cktRb{ 0%{ color:#FF4D4D; } 17%{ color:#FFA53D; } 33%{ color:#FFE14D; } 50%{ color:#4DDB7A; } 67%{ color:#4DB8FF; } 83%{ color:#B07CFF; } 100%{ color:#FF4D4D; } }
.ckt-board.glow .txt{ text-shadow:0 0 3px currentColor, 0 0 10px currentColor; }
.ckt-board.glow .txt span{ text-shadow:inherit; }
.ckt-board.blink .txt{ animation:cktBlk 1s steps(1) infinite; }
@keyframes cktBlk{ 50%{ opacity:0; } }
.ckt-board.bounce .txt span{ display:inline-block; animation:cktBn 1s ease-in-out infinite; }
.ckt-board.rainbow.bounce .txt span{ animation:cktBn 1s ease-in-out infinite, cktRb 3s linear infinite; }
@keyframes cktBn{ 0%,100%{ transform:translateY(0); } 50%{ transform:translateY(-14%); } }
.ckt-board .led{ position:absolute; inset:0; pointer-events:none; background-image:radial-gradient(circle, transparent 0 46%, rgba(0,0,0,.55) 60%); background-size:var(--dot,4px) var(--dot,4px); }
.ckt-board .paused{ position:absolute; right:12px; bottom:10px; font-size:13px; font-weight:700; color:#fff; background:rgba(0,0,0,.5); border-radius:999px; padding:3px 12px; }
.ckt-panel.full .ckt-board{ flex:1; height:auto; border-radius:0; }
.ckt-recv{ display:flex; align-items:center; justify-content:space-between; gap:10px; flex-wrap:wrap; background:var(--c-violet-soft); border-radius:14px; padding:10px 14px; margin:0 0 12px; font-size:14px; font-weight:700; }
.ckt-msg{ display:block; width:100%; margin:14px 0 0; border:2px solid var(--c-line); border-radius:14px; padding:12px 14px; font-size:18px; font-weight:700; resize:none; height:58px; background:var(--c-card); color:var(--c-ink); }
.ckt-cnt{ text-align:right; font-size:12px; color:var(--c-muted); margin:2px 4px 0; }
.ckt-chips.left{ justify-content:flex-start; margin-top:6px; gap:6px; }
.ckt-rows{ display:grid; gap:12px; margin:16px 0 0; }
.ckt-row{ display:flex; align-items:center; gap:10px; flex-wrap:wrap; }
.ckt-row > b{ width:64px; font-size:14px; color:var(--c-muted); font-weight:700; flex-shrink:0; }
.ckt-seg{ display:flex; gap:6px; flex-wrap:wrap; }
.ckt-seg .ckt-sw{ width:30px; height:30px; }
.ckt-sw.rbw{ background:conic-gradient(#FF4D4D,#FFA53D,#FFE14D,#4DDB7A,#4DB8FF,#B07CFF,#FF4D4D); }
.ckt-row input[type=range]{ flex:1; min-width:140px; accent-color:var(--c-go); }
.ckt-tog{ display:flex; align-items:center; gap:6px; font-size:14px; color:var(--c-muted); cursor:pointer; }
.ckt-tog input{ width:18px; height:18px; accent-color:var(--c-go); margin:0; }
.ckt-send{ margin:22px 0 0; background:var(--c-tile); border-radius:18px; padding:16px; }
.ckt-send h3{ margin:0 0 4px; font-size:17px; }
.ckt-send > p{ margin:0 0 12px; font-size:14px; color:var(--c-muted); }
.ckt-linkbox{ display:block; width:100%; margin:12px 0 0; font-size:13px; padding:8px 10px; border:1px dashed var(--c-line); border-radius:10px; background:var(--c-card); color:var(--c-ink); }