/* =========================================================
   WOS.GG / WosHub - app.css (ONE FILE) - MOBILE-FIRST "FAIL-SAFE"
   Goals:
   1) No horizontal scroll / no cut-off
   2) Touch-safe controls
   3) Readable cards
   4) Topbar + Drawer (body.drawer-open OR .wos-drawer.is-open)
   5) PC also feels like mobile (container-limited header/content/footer)
   ========================================================= */

/* =========================
   A) Design Tokens
   ========================= */
:root{
  /* layout */
  --container: 1100px;  /* ✅ PC도 모바일 느낌 */
  --pad: 18px;
  --gap: 12px;

  --mobile-max: 400px;
  --tap: 44px;

  /* colors */
  --bg0:#f6f8ff;
  --bg1:#ffffff;

  --surface:#ffffff;
  --surface2:#f3f6ff;
  --surface3:#f8faff;

  --line:  rgba(20,40,90,.12);
  --line2: rgba(20,40,90,.18);

  --txt:#0f172a;
  --muted: rgba(15,23,42,.70);

  --brand:#2f6bff;
  --brand2:#1f56f0;

  /* radius / shadow */
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --shadow: 0 12px 28px rgba(15,23,42,.10);

  /* topbar / drawer */
  --topbar-h:56px;
  --drawer-w: min(86vw, 320px);
  --overlay: rgba(0,0,0,.35);
  --drawer-shadow: 0 20px 60px rgba(0,0,0,.18);
}

/* =========================
   B) Global Fail-Safe Reset
   ========================= */
*{ box-sizing:border-box; }
html,body{ height:100%; }
html,body{
  width:100%;
  min-width:0;
  overflow-x:hidden;
  -webkit-text-size-adjust:100%;
}
body{
  margin:0;
  color:var(--txt);
  font-family: system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  font-size:14px;
  line-height:1.55;
  background:
    radial-gradient(900px 520px at 15% 0%, rgba(47,107,255,.10), transparent 55%),
    radial-gradient(820px 520px at 85% 10%, rgba(47,107,255,.08), transparent 55%),
    linear-gradient(180deg, var(--bg0), var(--bg1));
}

/* media always constrained */
img,svg,video,canvas{
  max-width:100%;
  height:auto;
  display:block;
}

/* links */
a{ color:inherit; text-decoration:none; }
a:hover{ color:var(--brand2); }
::selection{ background: rgba(47,107,255,.18); }

/* long strings never break layout */
:where(p,li,span,div,code,pre,td,th,a){
  overflow-wrap:anywhere;
  word-break:break-word;
}

/* prevent flex/grid children from forcing overflow */
:where(.row,.wos-row,.wos-item,.wos-tile,.wos-header-inner,#app,#view,#calcRoot){
  min-width:0;
}

.muted{ color:var(--muted); }
.small{ font-size:12px; }
.tiny{ font-size:11px; }
.mono{ font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono","Courier New", monospace; }

/* focus */
:focus-visible{
  outline:2px solid rgba(47,107,255,.55);
  outline-offset:2px;
  border-radius:12px;
}

/* =========================
   C) Containers / Layout
   ========================= */
.shell,
.wos-page,
.wos-wrap,
.container{
  width:100%;
  max-width: var(--container);
  margin:0 auto;
  padding:0 var(--pad);
}

#app{
  width:100%;
  max-width: var(--container); /* ✅ app.js가 내부 1500을 써도 여기서 제한 */
  margin:0 auto;
}
#app > *{ max-width:100%; }

main{ padding:22px 0 34px; }

/* cards/panels */
.panel,
.wos-panel{
  border:1px solid var(--line);
  background: var(--surface);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow);
}
.panel-inner{ padding:16px; }

.bar{
  border:1px solid var(--line);
  background: var(--surface3);
  border-radius: var(--r-md);
  padding: 12px 14px;
}

.card{
  display:block;
  border:1px solid var(--line);
  background: var(--surface);
  border-radius: var(--r-lg);
  padding:14px;
  transition: transform .08s ease, border-color .15s ease, background .15s ease;
  will-change: transform;
}
.card:hover{
  background: var(--surface2);
  border-color: rgba(47,107,255,.25);
  transform: translateY(-1px);
}
.card strong{
  display:block;
  font-size:15px;
  margin-bottom:6px;
}

/* =========================
   D) Controls (Touch-safe)
   ========================= */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:var(--tap);
  padding:10px 12px;
  border-radius:var(--r-sm);
  border:1px solid var(--line2);
  background: var(--surface);
  color: var(--txt);
  cursor:pointer;
  user-select:none;
  transition: transform .05s ease, border-color .15s ease, background .15s ease, box-shadow .15s ease;
}
.btn:hover{
  background: var(--surface2);
  border-color: rgba(47,107,255,.35);
}
.btn:active{ transform: translateY(1px); }
.btn.primary{
  border-color: rgba(47,107,255,.55);
  background: rgba(47,107,255,.10);
  box-shadow: 0 10px 18px rgba(47,107,255,.10);
}
.btn.primary:hover{
  background: rgba(47,107,255,.14);
  border-color: rgba(47,107,255,.85);
}

/* inputs: 16px to avoid iOS auto-zoom */
.input,
input[type="text"],
input[type="number"],
select,
textarea{
  width:100%;
  max-width:100%;
  min-width:0;
  min-height:var(--tap);
  font-size:16px;
  line-height:1.25;
  padding:10px 12px;
  border-radius:12px;
  border:1px solid var(--line2);
  background: var(--surface);
  color: var(--txt);
  outline:none;
  transition: border-color .15s ease, box-shadow .15s ease, background .15s ease;
}
.input:focus,
input[type="text"]:focus,
input[type="number"]:focus,
select:focus,
textarea:focus{
  border-color: rgba(47,107,255,.65);
  box-shadow: 0 0 0 4px rgba(47,107,255,.14);
}

/* =========================
   E) Grids (Safe)
   ========================= */
.grid{
  display:grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap:var(--gap);
}
.grid.cards{
  grid-template-columns: repeat(auto-fill, minmax(clamp(180px, 22vw, 240px), 1fr));
  gap:var(--gap);
}
@media (max-width:1024px){
  .grid.cards{ grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
}
@media (max-width:720px){
  .grid.cards{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width:520px){
  .grid,
  .grid.cards{ grid-template-columns:1fr; }
}

/* =========================
   F) Tables (Only tables scroll)
   ========================= */
.table-wrap{
  overflow-x:auto;
  border-radius: var(--r-md);
  border:1px solid var(--line);
  background: var(--surface);
}
.panel .table-wrap,
.wos-panel .table-wrap{
  margin: 12px 16px 16px;
}

table{
  width:100%;
  border-collapse:collapse;
  min-width:860px; /* wrapper scrolls */
}
th,td{
  border-bottom: 1px solid rgba(20,40,90,.10);
  padding:10px 10px;
  text-align:center;
  vertical-align:middle;
  white-space:nowrap;
}
th{
  position:sticky;
  top:0;
  background: rgba(245,248,255,.95);
  z-index:1;
  font-weight:800;
  color: rgba(15,23,42,.92);
  border-bottom: 1px solid rgba(20,40,90,.16);
}
tbody tr:hover td{ background: rgba(47,107,255,.06); }

.tbl td.prereq,
.tbl th.prereq{
  text-align:left;
  white-space:normal;
  line-height:1.35;
  min-width:240px;
}

/* =========================
   G) SPA (wos-*) UI
   ========================= */
.wos-shell{ min-height:100vh; }
.wos-home{ padding:18px 0 30px; }
.wos-home-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
  align-items:start;
}
.wos-row{ display:flex; align-items:center; justify-content:space-between; gap:12px; }

.wos-list{ display:flex; flex-direction:column; gap:10px; margin-top:10px; }

.wos-item{
  display:flex;
  align-items:flex-start;
  gap:10px;
  padding:10px;
  border-radius:14px;
  border:1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
}
.wos-item:hover{
  outline:1px solid var(--line);
  background: rgba(47,107,255,.08);
}
.wos-item-title{ font-weight:800; line-height:1.25; }
.wos-item-meta{ font-size:12px; color:var(--muted); margin-top:4px; }

.wos-grid3{
  display:grid;
  grid-template-columns:repeat(3, minmax(0,1fr));
  gap:12px;
}
@media (max-width:980px){
  .wos-grid3{ grid-template-columns:repeat(2, minmax(0,1fr)); }
}
@media (max-width:640px){
  .wos-grid3{ grid-template-columns:1fr; }
}

.wos-tiles{
  display:grid;
  grid-template-columns:repeat(3, minmax(0,1fr));
  gap:12px;
}
@media (max-width:980px){
  .wos-tiles{ grid-template-columns:repeat(2, minmax(0,1fr)); }
}
@media (max-width:640px){
  .wos-tiles{ grid-template-columns:1fr; }
}

.wos-tile{
  display:flex;
  gap:12px;
  align-items:center;
  padding:12px;
  border-radius:16px;
  border:1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
}
.wos-tile:hover{
  outline:1px solid var(--line);
  background: rgba(47,107,255,.08);
}
.wos-iconbox{
  width:48px;
  height:48px;
  border-radius:14px;
  border:1px solid var(--line);
  background: rgba(47,107,255,.10);
  display:flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
  overflow:hidden;
}
.wos-iconbox img{ width:100%; height:100%; object-fit:cover; }
.wos-tile-title{ font-weight:900; line-height:1.2; }
.wos-tile-sub{ font-size:12px; color:var(--muted); margin-top:4px; }

/* =========================
   H) Calculator Fail-Safe
   ========================= */
.calculator{
  width:100%;
  max-width: clamp(600px, 70vw, 800px);
  margin:0 auto;
  padding:16px;
  border-radius: var(--r-lg);
  border:1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}
.calculator .result{
  word-break:break-word;
  overflow-wrap:anywhere;
}

/* Mobile: force <= 400px for forms/calcs */
@media (max-width:640px){
  #calcRoot{
    max-width: var(--mobile-max);
    margin:0 auto;
    padding:0 12px;
    overflow-x:hidden;
  }

  #calcRoot .calculator,
  .calculator{
    width:100%;
    max-width: var(--mobile-max) !important;
    margin:0 auto;
    padding:12px;
    border-radius:14px;
  }

  #calcRoot .row,
  #calcRoot .grid,
  #calcRoot .calculator .row,
  #calcRoot .calculator .grid{
    display:flex !important;
    flex-direction:column !important;
    align-items:stretch !important;
  }

  #calcRoot input,
  #calcRoot select,
  #calcRoot button{
    width:100%;
    max-width:100%;
    min-width:0;
    min-height: var(--tap);
    font-size:16px;
  }
}

/* =========================
   I) Topbar + Drawer
   ========================= */

/* topbar */
.wos-topbar{
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--topbar-h);
  background: var(--surface);
  border-bottom:1px solid var(--line);
}

/* ✅ PC spacing fix: inner container */
.wos-topbar-inner{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 16px;
  height: var(--topbar-h);
  display:flex;
  align-items:center;
  gap:12px;
}

/* brand */
.wos-brand{
  font-weight:900;
  letter-spacing:-.2px;
  color:inherit;
  font-size:16px;
  line-height:1;
  padding:8px 10px;
  border-radius:12px;
}
.wos-brand:hover{ background: rgba(0,0,0,.04); }

/* icon buttons */
.wos-iconbtn{
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--txt);
  border-radius: 12px;
  height: 40px;
  min-width: 40px;
  padding: 0 12px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  font-size:16px;
  line-height:1;
}
.wos-iconbtn:hover{
  background: rgba(47,107,255,.08);
  border-color: rgba(47,107,255,.25);
}

/* ✅ right align language group */
.wos-langbar{
  margin-left:auto;
  display:flex;
  gap:8px;
  align-items:center;
}

/* app spacing under topbar */
.wos-app{ padding-top: 12px; }

/* backdrop hidden support */
.wos-drawer-backdrop[hidden]{ display:none; }

/* drawer backdrop */
.wos-drawer-backdrop{
  position: fixed;
  inset: 0;
  background: var(--overlay);
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease;
  z-index: 120;
}

/* drawer */
.wos-drawer{
  position: fixed;
  top: 0;
  left: 0;
  height: 100dvh;
  width: var(--drawer-w);
  background: var(--surface);
  transform: translateX(-100%);
  transition: transform .18s ease;
  box-shadow: var(--drawer-shadow);
  z-index: 130;
  display:flex;
  flex-direction:column;
}

/* drawer head */
.wos-drawer-head{
  height: var(--topbar-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 0 12px;
  border-bottom:1px solid var(--line);
}
.wos-drawer-title{ font-weight:900; letter-spacing:-.2px; }

/* mobile drawer lang row */
.wos-drawer-lang{
  display:flex;
  gap:8px;
  padding:10px 10px 0;
}
.wos-drawer-lang .wos-drawer-link{
  margin:0;
  flex:1;
  text-align:center;
}

/* drawer links */
.wos-drawer-link{
  margin: 8px 10px 0;
  padding: 12px 12px;
  border-radius: 14px;
  text-decoration:none;
  color:inherit;
  background: rgba(0,0,0,.04);
  border: 1px solid rgba(0,0,0,.05);
  cursor:pointer;
  font-weight:800;
}
.wos-drawer-link.active{
  background: rgba(47,107,255,.10);
  border-color: rgba(47,107,255,.22);
}
.wos-drawer-link:active{ transform: translateY(1px); }

/* OPEN STATE: support BOTH patterns */
body.drawer-open .wos-drawer,
.wos-drawer.is-open{
  transform: translateX(0);
}
body.drawer-open .wos-drawer-backdrop{
  opacity: 1;
  pointer-events: auto;
}

/* =========================
   J) Footer
   ========================= */
.site-footer{
  padding: 18px 0;
  border-top: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  font-size: 12px;
}
.site-footer a{ text-decoration:none; }
.site-footer a:hover{ text-decoration:underline; }

.site-footer-inner{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 16px;
  display:flex;
  gap:12px;
  align-items:center;
}

/* =========================
   K) Small screen tweaks
   ========================= */
@media (max-width:480px){
  :root{ --pad:12px; }
  .wos-topbar-inner{ padding: 0 12px; }
  .wos-iconbtn{ padding: 0 10px; }
}