/* ROBERIN gpa-converter-calculator (학점 변환 계산기) - The New workspace v2 (20260716a)
 * Scope: .tn-gpa-* only. Redesign: 갇힌 하드 박스 -> 열린 라운드 소프트 패널 2열(입력 좌 / 결과 우),
 * 결과는 시각형 — 큰 평점 + 게이지 미터(0~4.5) + 4.3/4.0/백분율 스탯 + 성적 분포 바(학점 가중).
 * Gates: input-left (#3), realtime (#17), container gap owns spacing (#22/#37), no decorative rail (#30),
 * custom select chevron (#33), flipped dark tokens + text-fill (#8/#14), neutral load skeleton (#9/#10),
 * quiet flat wash (loud gradient/outline 금지, #27), element reset li/ul/ol/dd only (#37). */

.tn-gpa-page {
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
  color: #1a1208;
  -webkit-text-fill-color: currentColor;
}
.tn-gpa-page,
.tn-gpa-page * { box-sizing: border-box; }

.tn-gpa-tool {
  --gpa-ink: #1a1208;
  --gpa-muted: #5a4a30;
  --gpa-line: #b8a888;
  --gpa-soft: #cbb692;
  --gpa-paper: #fffdf8;
  --gpa-wash: #f6eddc;
  --gpa-panel: #fbf6ec;
  --gpa-surface: #fffdf8;
  --gpa-card: #fbf4e6;
  --gpa-band-bg: #f4ecda;
  --gpa-track: #e7dcc4;
  --gpa-accent: #b4600f;
  --gpa-accent-soft: #f0e0c8;
  --gpa-accent-ink: #fffdf8;
  --gpa-btn-sec-bg: #f2e7d3;
  --gpa-btn-sec-hover: #e7d8bd;
  --gpa-btn-sec-text: #3a2c18;
  --gpa-a: #b4600f;
  --gpa-b: #c98a3f;
  --gpa-c: #d9b483;
  --gpa-d: #e3cdaa;
  --gpa-f: #c3b291;
  color: var(--gpa-ink);
  -webkit-text-fill-color: var(--gpa-ink);
  font-family: inherit;
  display: grid;
  gap: 16px;
}

.tn-gpa-tool ul,
.tn-gpa-tool ol,
.tn-gpa-tool li,
.tn-gpa-tool dd { margin: 0; padding: 0; list-style: none; }

/* ---- open workspace: two soft rounded panels, separated by gap (no caging border) ---- */
.tn-gpa-workspace {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 18px;
  align-items: start;
}
.tn-gpa-input,
.tn-gpa-result {
  display: grid;
  align-content: start;
  gap: 14px;
  padding: 18px;
  min-width: 0;
  border: 1px solid var(--gpa-soft);
  border-radius: 14px;
}
.tn-gpa-input { background: var(--gpa-wash); }
.tn-gpa-result { background: var(--gpa-panel); }
.tn-gpa-pane-label {
  margin: 0;
  font: 700 12px/1 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--gpa-muted);
  -webkit-text-fill-color: var(--gpa-muted);
}
.tn-gpa-band-label {
  margin: 0;
  font: 700 11px/1.3 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--gpa-muted);
  -webkit-text-fill-color: var(--gpa-muted);
}

/* ---- course rows ---- */
.tn-gpa-list { display: grid; gap: 8px; }
.tn-gpa-list-head,
.tn-gpa-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 82px 96px 36px;
  gap: 8px;
  align-items: center;
}
.tn-gpa-list-head span {
  font: 600 11px/1 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--gpa-muted);
  -webkit-text-fill-color: var(--gpa-muted);
  padding: 0 2px;
}
.tn-gpa-rows { display: grid; gap: 8px; }
.tn-gpa-control {
  display: flex;
  align-items: stretch;
  min-width: 0;
  height: 36px;
  border: 1px solid var(--gpa-line);
  border-radius: 8px;
  background: var(--gpa-paper);
  overflow: hidden;
}
.tn-gpa-control input {
  flex: 1 1 auto;
  width: 100%;
  min-width: 0;
  padding: 0 10px;
  border: 0;
  background: transparent;
  color: var(--gpa-ink);
  -webkit-text-fill-color: var(--gpa-ink);
  font: 600 13px/1 inherit;
}
.tn-gpa-control input::placeholder { color: var(--gpa-muted); -webkit-text-fill-color: var(--gpa-muted); opacity: 0.55; }
.tn-gpa-control input::-webkit-input-placeholder { color: var(--gpa-muted); -webkit-text-fill-color: var(--gpa-muted); opacity: 0.55; }
.tn-gpa-control input:focus-visible { outline: 2px solid var(--gpa-accent); outline-offset: -2px; }
.tn-gpa-control--select select {
  flex: 1 1 auto;
  width: 100%;
  min-width: 0;
  height: 100%;
  padding: 0 28px 0 10px;
  border: 0;
  background: transparent;
  color: var(--gpa-ink);
  -webkit-text-fill-color: var(--gpa-ink);
  font: 600 13px/1 inherit;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%235a4a30' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 9px center;
}
.tn-gpa-control--select select:focus-visible { outline: 2px solid var(--gpa-accent); outline-offset: -2px; }
.tn-gpa-del {
  height: 36px;
  width: 36px;
  border: 1px solid var(--gpa-soft);
  border-radius: 8px;
  background: var(--gpa-btn-sec-bg);
  color: var(--gpa-btn-sec-text);
  -webkit-text-fill-color: var(--gpa-btn-sec-text);
  font: 700 16px/1 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.tn-gpa-del:hover { background: var(--gpa-btn-sec-hover); border-color: var(--gpa-accent); }
.tn-gpa-del:focus-visible { outline: 2px solid var(--gpa-accent); outline-offset: 2px; }
.tn-gpa-del[disabled] { opacity: 0.4; cursor: not-allowed; }

/* ---- command / actions ---- */
.tn-gpa-command { display: grid; gap: 8px; }
.tn-gpa-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
.tn-gpa-actions--single { grid-template-columns: minmax(0, 1fr); }
.tn-gpa-secondary {
  height: 38px;
  border: 1px solid var(--gpa-line);
  border-radius: 9px;
  background: var(--gpa-btn-sec-bg);
  color: var(--gpa-btn-sec-text);
  -webkit-text-fill-color: var(--gpa-btn-sec-text);
  font: 700 13px/1 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.tn-gpa-secondary:hover { background: var(--gpa-btn-sec-hover); }
.tn-gpa-secondary:focus-visible { outline: 2px solid var(--gpa-accent); outline-offset: 2px; }
.tn-gpa-status {
  margin: 0;
  padding: 10px 12px;
  border: 1px solid var(--gpa-soft);
  border-radius: 9px;
  background: var(--gpa-band-bg);
  font-size: 12px;
  line-height: 1.5;
  color: var(--gpa-muted);
  -webkit-text-fill-color: var(--gpa-muted);
}

/* ---- result hero: big score + meter ---- */
.tn-gpa-hero { display: grid; gap: 12px; }
.tn-gpa-score { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.tn-gpa-score strong {
  font: 800 clamp(40px, 7.2vw, 56px)/1 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  color: var(--gpa-ink);
  -webkit-text-fill-color: var(--gpa-ink);
  letter-spacing: -0.01em;
}
.tn-gpa-score-max {
  font: 600 16px/1 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  color: var(--gpa-muted);
  -webkit-text-fill-color: var(--gpa-muted);
}
.tn-gpa-hero-sub {
  margin: 0;
  font-size: 12px;
  line-height: 1.45;
  color: var(--gpa-muted);
  -webkit-text-fill-color: var(--gpa-muted);
}
.tn-gpa-hero-sub b { font-weight: 700; color: var(--gpa-accent); -webkit-text-fill-color: var(--gpa-accent); }
.tn-gpa-meter { display: grid; gap: 5px; }
.tn-gpa-meter-track {
  position: relative;
  height: 12px;
  border-radius: 999px;
  background: var(--gpa-track);
  overflow: hidden;
}
.tn-gpa-meter-fill {
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: var(--gpa-accent);
  transition: width 0.28s ease;
}
.tn-gpa-meter-scale {
  display: flex;
  justify-content: space-between;
  font: 500 10px/1 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  color: var(--gpa-muted);
  -webkit-text-fill-color: var(--gpa-muted);
}

/* ---- conversion scales row (1px dividers, no boxes) ---- */
.tn-gpa-scales {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--gpa-soft);
  border-radius: 11px;
  background: var(--gpa-surface);
  overflow: hidden;
}
.tn-gpa-scale { display: grid; gap: 3px; padding: 11px 12px; min-width: 0; }
.tn-gpa-scale + .tn-gpa-scale { border-left: 1px solid var(--gpa-track); }
.tn-gpa-scale > span {
  font: 600 11px/1.2 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  color: var(--gpa-muted);
  -webkit-text-fill-color: var(--gpa-muted);
}
.tn-gpa-scale > strong {
  font: 700 18px/1.15 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  color: var(--gpa-ink);
  -webkit-text-fill-color: var(--gpa-ink);
  word-break: break-word;
}

/* ---- grade distribution ---- */
.tn-gpa-dist { display: grid; gap: 8px; }
.tn-gpa-dist-bar {
  display: flex;
  height: 18px;
  border-radius: 7px;
  overflow: hidden;
  background: var(--gpa-track);
}
.tn-gpa-dist-seg { height: 100%; min-width: 0; transition: width 0.28s ease; }
.tn-gpa-dist-seg.is-a { background: var(--gpa-a); }
.tn-gpa-dist-seg.is-b { background: var(--gpa-b); }
.tn-gpa-dist-seg.is-c { background: var(--gpa-c); }
.tn-gpa-dist-seg.is-d { background: var(--gpa-d); }
.tn-gpa-dist-seg.is-f { background: var(--gpa-f); }
.tn-gpa-dist-legend { display: flex; flex-wrap: wrap; gap: 6px 12px; }
.tn-gpa-dist-legend span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font: 600 11px/1.2 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  color: var(--gpa-muted);
  -webkit-text-fill-color: var(--gpa-muted);
}
.tn-gpa-dist-legend i {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  flex: 0 0 auto;
}
.tn-gpa-dist-legend i.is-a { background: var(--gpa-a); }
.tn-gpa-dist-legend i.is-b { background: var(--gpa-b); }
.tn-gpa-dist-legend i.is-c { background: var(--gpa-c); }
.tn-gpa-dist-legend i.is-d { background: var(--gpa-d); }
.tn-gpa-dist-legend i.is-f { background: var(--gpa-f); }
.tn-gpa-dist-empty {
  font-size: 11px;
  line-height: 1.4;
  color: var(--gpa-muted);
  -webkit-text-fill-color: var(--gpa-muted);
}

.tn-gpa-disclaimer {
  margin: 2px 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--gpa-track);
  font-size: 11px;
  line-height: 1.5;
  color: var(--gpa-muted);
  -webkit-text-fill-color: var(--gpa-muted);
}

/* ---- mobile ---- */
@media (max-width: 720px) {
  .tn-gpa-workspace { grid-template-columns: minmax(0, 1fr); gap: 14px; }
}
@media (max-width: 440px) {
  .tn-gpa-list-head,
  .tn-gpa-row { grid-template-columns: minmax(0, 1fr) 68px 82px 34px; gap: 6px; }
  .tn-gpa-scales { grid-template-columns: minmax(0, 1fr); }
  .tn-gpa-scale + .tn-gpa-scale { border-left: 0; border-top: 1px solid var(--gpa-track); }
}

/* ---- Dark / inverse / auto-dark (#8/#14) ---- */
body:is([data-scheme="dark"], [data-scheme="inverse"], [data-scheme="auto"][data-d="dark"], [data-scheme="auto"][data-l="dark"]):not([data-scheme="light"]) .tn-gpa-tool,
html[data-scheme="dark"] body:not([data-scheme="light"]) .tn-gpa-tool,
html[data-scheme="inverse"] body:not([data-scheme="light"]) .tn-gpa-tool {
  --gpa-ink: #efe6d2;
  --gpa-muted: #c3b492;
  --gpa-line: #6f6047;
  --gpa-soft: #574a37;
  --gpa-paper: #241d12;
  --gpa-wash: #221b11;
  --gpa-panel: #201a10;
  --gpa-surface: #1f1810;
  --gpa-card: rgba(58, 48, 32, 0.5);
  --gpa-band-bg: rgba(58, 48, 32, 0.36);
  --gpa-track: rgba(120, 104, 74, 0.32);
  --gpa-accent: #e0a24d;
  --gpa-accent-soft: rgba(224, 162, 77, 0.2);
  --gpa-accent-ink: #1f1810;
  --gpa-btn-sec-bg: #33291a;
  --gpa-btn-sec-hover: #453720;
  --gpa-btn-sec-text: #efe6d2;
  --gpa-a: #e0a24d;
  --gpa-b: #c98a3f;
  --gpa-c: #9a7238;
  --gpa-d: #6f5a37;
  --gpa-f: #574a37;
  color: var(--gpa-ink);
  -webkit-text-fill-color: var(--gpa-ink);
}
body:is([data-scheme="dark"], [data-scheme="inverse"], [data-scheme="auto"][data-d="dark"], [data-scheme="auto"][data-l="dark"]):not([data-scheme="light"]) .tn-gpa-control--select select,
html[data-scheme="dark"] body:not([data-scheme="light"]) .tn-gpa-control--select select,
html[data-scheme="inverse"] body:not([data-scheme="light"]) .tn-gpa-control--select select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%23c3b492' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}

@media (prefers-color-scheme: dark) {
  body[data-scheme="auto"]:not([data-scheme="light"]) .tn-gpa-tool {
    --gpa-ink: #efe6d2;
    --gpa-muted: #c3b492;
    --gpa-line: #6f6047;
    --gpa-soft: #574a37;
    --gpa-paper: #241d12;
    --gpa-wash: #221b11;
    --gpa-panel: #201a10;
    --gpa-surface: #1f1810;
    --gpa-card: rgba(58, 48, 32, 0.5);
    --gpa-band-bg: rgba(58, 48, 32, 0.36);
    --gpa-track: rgba(120, 104, 74, 0.32);
    --gpa-accent: #e0a24d;
    --gpa-accent-soft: rgba(224, 162, 77, 0.2);
    --gpa-accent-ink: #1f1810;
    --gpa-btn-sec-bg: #33291a;
    --gpa-btn-sec-hover: #453720;
    --gpa-btn-sec-text: #efe6d2;
    --gpa-a: #e0a24d;
    --gpa-b: #c98a3f;
    --gpa-c: #9a7238;
    --gpa-d: #6f5a37;
    --gpa-f: #574a37;
    color: var(--gpa-ink);
    -webkit-text-fill-color: var(--gpa-ink);
  }
  body[data-scheme="auto"]:not([data-scheme="light"]) .tn-gpa-control--select select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%23c3b492' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  }
}