/* 기본: 리셋 · 글자 · 포커스 링 · 화면 배치(.page) · 도우미 · 공통 움직임. 색은 tokens.css 변수만 쓴다. */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0; min-height: 100dvh; background: var(--bg); color: var(--text);
  font-family: var(--font); font-size: var(--fs-14); line-height: var(--lh);
  font-feature-settings: "ss01", "ss02", "tnum" 0; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility;
  word-break: keep-all; overflow-wrap: anywhere;
}
h1, h2, h3, h4, p, figure, blockquote, dl, dd { margin: 0; }
h1 { font-size: var(--fs-24); line-height: var(--lh-tight); font-weight: 700; letter-spacing: -.015em; }
h2 { font-size: var(--fs-16); line-height: var(--lh-tight); font-weight: 650; letter-spacing: var(--tracking-title); }
h3 { font-size: var(--fs-14); line-height: var(--lh-tight); font-weight: 650; letter-spacing: var(--tracking-title); }
h4 { font-size: var(--fs-13); font-weight: 650; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
img, svg, video, canvas { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; letter-spacing: inherit; }
button { -webkit-tap-highlight-color: transparent; }
ul, ol { margin: 0; padding: 0; list-style: none; }
code, kbd, samp, pre { font-family: var(--font-mono); font-size: .92em; }
hr { border: 0; border-top: 1px solid var(--border); margin: var(--s-4) 0; }
table { border-collapse: collapse; }
[hidden] { display: none !important; }
::selection { background: var(--brand-soft); color: var(--text); }

/* 스크롤바 — 얇고 조용하게 */
* { scrollbar-width: thin; scrollbar-color: var(--border-strong) transparent; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 10px; border: 3px solid transparent; background-clip: content-box; }
::-webkit-scrollbar-track { background: transparent; }

/* 포커스 링 — 키보드로 옮길 때만, 브랜드 2px */
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 2px; border-radius: var(--r-chip); }
[tabindex="-1"]:focus, [tabindex="-1"]:focus-visible { outline: none; }
.skip-link { position: fixed; left: var(--s-3); top: -4rem; z-index: calc(var(--z-toast) + 1); background: var(--surface); color: var(--text); padding: var(--s-2) var(--s-4); border-radius: var(--r-ctl); box-shadow: var(--shadow-2); transition: top var(--d-base) var(--ease); }
.skip-link:focus { top: calc(var(--strip-h) + var(--s-2)); }

/* 글자 도우미 */
.muted { color: var(--text-2); }
.subtle { color: var(--text-3); }
.num, .tnum { font-variant-numeric: tabular-nums; }
.mono { font-family: var(--font-mono); font-size: var(--fs-13); }
.t-12 { font-size: var(--fs-12); } .t-13 { font-size: var(--fs-13); } .t-16 { font-size: var(--fs-16); } .t-20 { font-size: var(--fs-20); }
.eyebrow { font-size: var(--fs-12); font-weight: 650; color: var(--text-3); letter-spacing: .02em; }
.strong { font-weight: 650; }
.ellipsis { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.sr-only { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; padding: 0; margin: -1px; }

/* 화면 배치 — 넓은 화면은 글자를 키우지 않고 영역만 넓힌다. 문서형 화면은 읽기 폭을 두고, .page-wide 는 끝까지 채운다. */
.page { width: 100%; max-width: 76rem; margin: 0 auto; padding: var(--s-7) var(--s-7) var(--s-9); display: grid; gap: var(--s-6); align-content: start; animation: page-in var(--d-slow) var(--ease); }
.page-wide, .page-fluid { max-width: none; }
.page-narrow { max-width: 40rem; }
.page > *, .auth-card > * { min-width: 0; }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: var(--s-4); flex-wrap: wrap; }
.page-head > div:first-child { display: grid; gap: var(--s-1); min-width: 0; }
.page-head p { color: var(--text-2); max-width: 46rem; }
.actions { display: flex; gap: var(--s-2); flex-wrap: wrap; align-items: center; }
.stack { display: grid; gap: var(--s-4); align-content: start; }
.stack-sm { display: grid; gap: var(--s-2); align-content: start; }
.row { display: flex; align-items: center; gap: var(--s-3); min-width: 0; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: var(--s-3); min-width: 0; }
.grow { flex: 1 1 auto; min-width: 0; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-3); }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 16rem), 1fr)); gap: var(--s-4); }

@media (max-width: 1100px) { .page { padding: var(--s-6) var(--s-6) var(--s-9); } }
@media (max-width: 768px) {
  .page { padding: var(--s-4) var(--s-4) var(--s-8); gap: var(--s-4); }
  h1 { font-size: var(--fs-20); }
  .grid-2 { grid-template-columns: 1fr; }
}

/* 공통 움직임 */
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes shimmer { from { background-position: 100% 0; } to { background-position: 0 0; } }
@keyframes indet { 0% { transform: translateX(-100%); } 100% { transform: translateX(320%); } }
/* 들어오는 움직임은 transform 만 쓴다 — opacity 0 에서 시작하면 뒤쪽 탭(숨은 탭)에서 애니메이션이 첫 장면에 멈춰 화면이 빈 것처럼 보인다.
   투명도 페이드는 배경막(::backdrop)에만 쓴다(멈춰도 내용은 보임). */
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes nudge-in { from { transform: translateY(2px); } to { transform: none; } }
@keyframes page-in { from { transform: translateY(4px); } to { transform: none; } }
@keyframes pop-in { from { transform: translateY(6px) scale(.985); } to { transform: none; } }
@keyframes slide-down { from { transform: translateY(-8px); } to { transform: none; } }
@keyframes slide-left { from { transform: translateX(100%); } to { transform: none; } }
@keyframes slide-up { from { transform: translateY(100%); } to { transform: none; } }
@keyframes toast-in { from { transform: translateY(10px) scale(.97); } to { transform: none; } }
@keyframes toast-out { to { opacity: 0; transform: translateY(6px); } }
@keyframes pulse-ring { 0% { box-shadow: 0 0 0 0 var(--glow-critical); } 70%, 100% { box-shadow: 0 0 0 .5rem transparent; } }
@keyframes edge-glow { 0%, 100% { box-shadow: inset 0 0 0 3px var(--st-critical-line), inset 0 0 2.5rem .25rem var(--glow-critical-soft); } 50% { box-shadow: inset 0 0 0 3px var(--st-critical-line), inset 0 0 5rem 1rem var(--glow-critical); } }
@keyframes ripple { 0% { transform: scale(.6); opacity: .9; } 100% { transform: scale(1.6); opacity: 0; } }
@keyframes dot-pulse { 0%, 100% { opacity: 1; } 50% { opacity: .35; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 1ms !important; animation-iteration-count: 1 !important; transition: none !important; scroll-behavior: auto !important; }
}