/* 스튜디오 공통: 글꼴·리셋·버튼·입력·앱 셸(사이드바). (studio.css 에서 옮김 — index.html 이 이 순서로 부른다: base → start → results → editor → responsive → account) */
/* 스튜디오 화면. 값은 /design/tokens.css 토큰만 쓴다. */
@font-face {
  font-family: "Noto Sans CJK";
  src: local("Noto Sans CJK KR"), local("NotoSansCJKkr-Regular"), local("Noto Sans KR"), local("NotoSansKR-Regular");
  font-display: swap;
}

* { box-sizing: border-box; }
html { background: var(--c-bg); color: var(--c-text); font-family: var(--font-sans); -webkit-font-smoothing: antialiased; }
body { margin: 0; min-height: 100dvh; background: var(--c-bg); word-break: keep-all; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; }
:focus-visible { outline: 2px solid var(--c-focus); outline-offset: 2px; }
a { color: inherit; }
[hidden] { display: none !important; }
svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.sr { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

/* ── 버튼·입력 ─────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--sp-2); height: var(--control-h); padding: 0 var(--sp-4);
  border: 1px solid var(--c-line-strong); border-radius: var(--r-btn); background: var(--c-surface); color: var(--c-text-soft); font-size: var(--fs-sm);
  font-weight: var(--fw-heavy); white-space: nowrap; transition: background var(--m-fast), border-color var(--m-fast), transform var(--m-fast);
}
.btn:hover:not(:disabled) { background: var(--c-surface-hover); }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { opacity: .45; }
.btn-primary { border-color: transparent; background: var(--c-brand-grad); color: #fff; font-weight: var(--fw-black); }
.btn-primary:hover:not(:disabled) { background: var(--c-brand-grad); filter: brightness(1.06); }
.btn-secondary { background: var(--c-surface); }
.btn-quiet { border-color: transparent; background: transparent; color: var(--c-muted); }
.btn-sm { height: 32px; padding: 0 var(--sp-3); font-size: var(--fs-xs); }
.btn-lg { height: 48px; padding: 0 var(--sp-5); font-size: var(--fs-md); }
.icon-btn { display: grid; place-items: center; width: 32px; height: 32px; border: 0; border-radius: var(--r-sm); background: transparent; color: var(--c-text-soft); }
.icon-btn:hover:not(:disabled) { background: var(--c-surface-hover); }
.icon-btn:disabled { opacity: .3; }
.link { color: var(--c-muted); font-size: var(--fs-sm); font-weight: var(--fw-bold); text-decoration: none; }
.link:hover { color: var(--c-text); }
.field { display: grid; gap: 6px; font-size: var(--fs-xs); color: var(--c-muted); }
.field > span { display: flex; justify-content: space-between; gap: var(--sp-2); color: var(--c-text-soft); font-weight: var(--fw-bold); }
.field input:not([type="range"]):not([type="checkbox"]):not([type="color"]):not([type="file"]), .field select, .field textarea, .channel-fields input:not([type="file"]), .comment-row input {
  width: 100%; min-height: 38px; padding: 8px 10px; border: 1px solid var(--c-line-strong); border-radius: var(--r-sm); background: var(--c-bg-sunken); color: var(--c-text); font-size: var(--fs-sm);
}
.field textarea { resize: vertical; line-height: var(--lh-body); }
.field input[type="color"] { width: 100%; height: 38px; padding: 3px; border: 1px solid var(--c-line-strong); border-radius: var(--r-sm); background: var(--c-bg-sunken); }
.field input[type="range"] { width: 100%; accent-color: var(--c-brand-2); }
.field output { color: var(--c-muted); font-weight: var(--fw-regular); font-variant-numeric: tabular-nums; }
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-3); }
.field-foot { display: flex; justify-content: space-between; gap: var(--sp-2); color: var(--c-dim); }
.hint { display: block; color: var(--c-dim); font-size: var(--fs-xs); line-height: 1.5; }
.help { margin: var(--sp-2) 0 0; color: var(--c-muted); font-size: var(--fs-xs); text-align: center; }
.help.error-state, .error-state { color: var(--c-warning); }
.toggle { display: flex; align-items: center; gap: var(--sp-2); font-size: var(--fs-sm); font-weight: var(--fw-bold); color: var(--c-text-soft); }
.toggle small { color: var(--c-dim); font-weight: var(--fw-regular); }
.toggle input { accent-color: var(--c-brand-2); width: 16px; height: 16px; }

/* ── 앱 셸(ref-v2) ─────────────────────────────────────── */
/* 레일 폭은 다른 작업 화면(/trends·/pricing·/templates)과 같은 공통 값(header-system.css)을 쓴다. */
.workspace-studio { --side-w: var(--workspace-rail-width); }
.app { display: grid; grid-template-columns: var(--side-w) minmax(0, 1fr); min-height: 100dvh; }
.side { position: sticky; top: 0; display: flex; flex-direction: column; gap: var(--sp-1); height: 100dvh; padding: 18px 12px; border-right: 1px solid var(--c-line); background: var(--c-bg-sunken); }
.logo { display: flex; align-items: center; gap: var(--sp-2); padding: 4px 8px 22px; font-size: 17px; font-weight: var(--fw-black); letter-spacing: -.02em; text-decoration: none; }
.logo-mark { width: 22px; height: 22px; border-radius: 6px; background: var(--c-brand-grad); }
.wordmark b { background: var(--c-brand-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.side-nav { display: grid; gap: var(--sp-1); }
.nav { display: flex; align-items: center; gap: 10px; height: 44px; padding: 0 12px; border: 1px solid transparent; border-radius: 11px; color: #c9cccd; font-size: var(--fs-lg); font-weight: var(--fw-bold); text-decoration: none; }
.nav:hover { background: var(--c-surface); }
.nav.on { border-color: rgba(255, 122, 61, .35); background: linear-gradient(100deg, rgba(255, 59, 71, .32), rgba(255, 122, 61, .22)); color: #fff; }
.meter { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-2); margin-top: 14px; padding: 10px 12px; border: 1px solid var(--c-line); border-radius: 10px; background: var(--c-surface); color: var(--c-text-soft); font-size: var(--fs-xs); font-weight: var(--fw-bold); }
.meter b { color: var(--c-brand-3); }
.main { position: relative; min-width: 0; }
.page { max-width: 1152px; margin: 0 auto; padding: 28px 32px 96px; }
.site-footer { padding: 20px 28px 20px calc(var(--side-w) + 28px); border-top: 1px solid var(--c-line); }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 18px; }
.site-footer a { color: var(--c-muted); font-size: var(--fs-xs); text-decoration: none; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: var(--sp-4); margin: 0 0 14px; }
.section-head h2 { margin: 0; font-size: var(--fs-xl); font-weight: var(--fw-black); letter-spacing: var(--ls-tight); }
.section-head p { margin: 6px 0 0; color: var(--c-muted); font-size: var(--fs-xs); }
.count { color: var(--c-muted); font-size: var(--fs-sm); font-weight: var(--fw-bold); }