/* ══════════════════════════════════════════════════════════════════════════
   olaf.css — Olafi ühine visuaalne süsteem + põhinavigatsioon
   ──────────────────────────────────────────────────────────────────────────
   Muutujad on --o-* prefiksiga, et mitte põrkuda lehtede oma muutujatega
   (--bg, --accent jne). Lehed võivad oma muutujad nende peale suunata.
   Päis: olaf-nav.js joonistab #olafNav sisse — tume süvasinine riba, rühmad
   rippmenüüdena (heledad kaardid), mobiilis „Menüü" alt tõusval lehel.
   ══════════════════════════════════════════════════════════════════════════ */

:root{
  /* Värvid — süvasinine + liivakivi + terrakota aktsent */
  --o-ink:#0F1B33;
  --o-navy:#1B2B4E;
  --o-fg:#131B2B;
  --o-muted:#4F5870;          /* loetav hall: ~6.5:1 kreemil */
  --o-subtle:#7A8297;
  --o-bg:#F3EEE5;
  --o-surface:#FBF8F1;
  --o-surface-2:#F0EADD;
  --o-line:#E2DDD3;
  --o-line-2:#D0C9BC;
  --o-terra:#C9502F;          /* aktsent: indikaatorid, mitte väike tekst */
  --o-terra-soft:#F6E1D9;
  --o-ok:#0E7C66;
  --o-warn:#A16207;
  --o-err:#B42318;
  /* Tumedal päisel */
  --o-on-ink:#F3EEE5;
  --o-on-ink-muted:rgba(243,238,229,.74);
  --o-on-ink-line:rgba(255,255,255,.14);
  --o-terra-light:#E8795C;     /* aktsent tumedal: ~6:1 süvasinise vastu */
  --o-gold:#E8B94F;

  /* Tüpograafia */
  --o-font:"Space Grotesk",system-ui,-apple-system,"Segoe UI",sans-serif;
  --o-mono:"JetBrains Mono",ui-monospace,monospace;

  /* Vahed, raadiused, varjud */
  --o-s1:4px;--o-s2:8px;--o-s3:12px;--o-s4:16px;--o-s5:24px;--o-s6:32px;
  --o-r-sm:6px;--o-r:8px;--o-r-lg:12px;
  --o-sh-1:0 1px 0 rgba(15,27,51,.04),0 1px 2px rgba(15,27,51,.06);
  --o-sh-2:0 10px 32px rgba(15,27,51,.14),0 2px 6px rgba(15,27,51,.06);

  /* Päise kõrgus — lehed kasutavad paigutuses (nt kaardi mobiilivaade) */
  --o-nav-h:52px;
  --o-focus:0 0 0 2px var(--o-surface),0 0 0 4px var(--o-navy);
}

/* Võrreldavad arvud: ühelaiused numbrid */
.o-num{font-variant-numeric:tabular-nums}

/* ═══════════ PÄIS ═══════════ */
.olaf-nav{
  position:relative;z-index:900;flex-shrink:0;
  background:var(--o-ink);color:var(--o-on-ink);
  font-family:var(--o-font);font-size:14px;line-height:1.3;
  -webkit-font-smoothing:antialiased;
}
.olaf-nav:not([data-user]){z-index:1}
.olaf-nav *,.on-sheet *{box-sizing:border-box}
.olaf-nav a,.on-sheet a{text-decoration:none;color:inherit}
.olaf-nav button,.on-sheet button{font-family:inherit;cursor:pointer}
/* Fookus: tumedal ribal hele rõngas, heledal kaardil/lehel tume */
.olaf-nav :focus-visible{outline:2px solid var(--o-on-ink);outline-offset:2px;border-radius:var(--o-r-sm)}
.olaf-nav .on-drop :focus-visible,.on-sheet :focus-visible{outline:none;box-shadow:var(--o-focus);border-radius:var(--o-r-sm)}

.on-bar{
  height:var(--o-nav-h);display:flex;align-items:center;gap:var(--o-s3);
  padding:0 var(--o-s4) 0 var(--o-s3);
}
.on-brand{display:flex;align-items:center;gap:9px;min-height:44px;padding:0 6px;flex-shrink:0}
.on-mark{width:24px;height:24px;color:var(--o-terra-light);flex-shrink:0}
.on-mark svg{display:block;width:100%;height:100%}
.on-word{font-weight:700;font-size:17px;letter-spacing:-.02em;color:#FBF8F1}
/* Asukoht: „Rühm / Moodul" */
.on-crumb{
  display:flex;align-items:center;gap:8px;min-width:0;overflow:hidden;
  padding-left:var(--o-s3);border-left:1px solid var(--o-on-ink-line);
  font-size:14px;font-weight:500;white-space:nowrap;color:var(--o-on-ink);
}
.on-crumb .grp{color:var(--o-on-ink-muted);font-weight:400}
.on-crumb .sep{opacity:.4;font-weight:400}

.on-menu{display:flex;align-items:center;height:100%;margin-left:auto}
.on-menu > ul{display:flex;align-items:stretch;height:100%;list-style:none;margin:0;padding:0;gap:2px}
.on-menu > ul > li{position:relative;display:flex;align-items:center}
.on-top{
  position:relative;display:inline-flex;align-items:center;gap:5px;
  height:36px;padding:0 12px;border:0;background:none;border-radius:var(--o-r);
  font-size:14px;font-weight:500;color:var(--o-on-ink-muted);white-space:nowrap;
  transition:background .15s,color .15s;
}
.on-top:hover,.on-top[aria-expanded="true"]{background:rgba(255,255,255,.09);color:#fff}
.on-top.is-active{color:#fff;font-weight:600}
.on-top.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-8px;height:3px;border-radius:3px 3px 0 0;background:var(--o-terra-light);
}
.on-top .chev{width:10px;height:10px;opacity:.7;transition:transform .15s}
.on-top[aria-expanded="true"] .chev{transform:rotate(180deg)}

.on-right{
  display:flex;align-items:center;gap:var(--o-s2);flex-shrink:0;
  margin-left:var(--o-s2);padding-left:var(--o-s3);border-left:1px solid var(--o-on-ink-line);
}
.on-user{
  display:flex;align-items:center;gap:8px;height:32px;padding:0 10px 0 4px;border-radius:999px;
  background:rgba(255,255,255,.08);color:var(--o-on-ink);font-size:13px;font-weight:500;white-space:nowrap;
}
.on-avatar{width:24px;height:24px;border-radius:999px;display:grid;place-items:center;background:var(--o-gold);color:var(--o-ink);font-size:10.5px;font-weight:700;letter-spacing:.02em}
.on-logout{height:32px;padding:0 10px;border:0;background:none;border-radius:var(--o-r-sm);font-size:13px;color:var(--o-on-ink-muted)}
.on-logout:hover{background:rgba(255,255,255,.08);color:#fff}
.on-burger{display:none}

/* Rippmenüü — hele kaart tumeda riba all */
.on-drop{
  position:absolute;top:calc(100% + 4px);left:0;min-width:240px;
  list-style:none;margin:0;padding:6px;
  background:var(--o-surface);color:var(--o-fg);
  border:1px solid var(--o-line);border-radius:var(--o-r-lg);box-shadow:var(--o-sh-2);
}
.on-drop[hidden]{display:none}
.on-drop a,.on-drop button{
  display:flex;flex-direction:column;gap:2px;width:100%;text-align:left;
  padding:9px 12px;border:0;background:none;border-radius:var(--o-r);color:var(--o-fg);font-size:14px;font-weight:500;
}
.on-drop small{font-size:12px;font-weight:400;color:var(--o-muted)}
.on-drop a:hover,.on-drop button:hover{background:var(--o-surface-2)}
.on-drop [aria-current="page"]{background:var(--o-terra-soft)}
.on-drop [aria-current="page"]::after{content:"Avatud";font-size:11px;font-weight:600;color:var(--o-terra);margin-top:2px}

/* ═══════════ MOBIIL: menüüleht ═══════════ */
.on-sheet-bg{position:fixed;inset:0;z-index:2000;background:rgba(15,27,51,.4);opacity:0;transition:opacity .2s}
.on-sheet-bg.is-open{opacity:1}
.on-sheet{
  position:fixed;left:0;right:0;bottom:0;z-index:2001;
  max-height:88dvh;overflow-y:auto;overscroll-behavior:contain;
  background:var(--o-surface);color:var(--o-fg);font-family:var(--o-font);
  border-radius:16px 16px 0 0;box-shadow:var(--o-sh-2);
  padding:8px var(--o-s4) calc(var(--o-s4) + env(safe-area-inset-bottom,0px));
  transform:translateY(100%);transition:transform .25s cubic-bezier(.4,0,.2,1);
}
.on-sheet.is-open{transform:none}
.on-sheet[hidden],.on-sheet-bg[hidden]{display:none}
.on-sheet-head{display:flex;align-items:center;justify-content:space-between;min-height:48px;margin-bottom:4px}
.on-sheet-head h2{margin:0;font-size:17px;font-weight:700}
.on-sheet-close{width:44px;height:44px;border:0;background:none;border-radius:var(--o-r);display:grid;place-items:center;color:var(--o-fg)}
.on-sheet-close svg{width:18px;height:18px}
.on-sheet h3{margin:14px 0 4px;font-size:12px;font-weight:600;color:var(--o-muted);letter-spacing:.02em}
.on-sheet ul{list-style:none;margin:0;padding:0}
.on-sheet h3 + ul + .on-solo,.on-sheet ul + .on-solo{margin-top:12px;padding-top:8px;border-top:1px solid var(--o-line)}
.on-sheet li a,.on-sheet li button{
  display:flex;align-items:center;justify-content:space-between;width:100%;min-height:48px;
  padding:0 12px;border:0;background:none;border-radius:var(--o-r);text-align:left;
  font-size:16px;font-weight:500;color:var(--o-fg);
}
.on-sheet li a:active,.on-sheet li button:active{background:var(--o-surface-2)}
.on-sheet [aria-current="page"]{background:var(--o-terra-soft)}
.on-sheet [aria-current="page"]::after{content:"Avatud";font-size:12px;font-weight:600;color:var(--o-terra)}
.on-sheet-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;padding-top:12px;border-top:1px solid var(--o-line);font-size:14px}
.on-sheet-foot button{min-height:44px;padding:0 16px;border:1px solid var(--o-line-2);background:var(--o-surface);border-radius:var(--o-r);font-size:14px;font-weight:500;color:var(--o-fg)}

@media (max-width:900px){
  .olaf-nav .on-menu,.olaf-nav .on-user,.olaf-nav .on-logout{display:none}
  .olaf-nav .on-right{margin-left:auto;border-left:0;padding-left:0}
  .on-burger{
    display:inline-flex;align-items:center;gap:6px;min-width:44px;height:44px;padding:0 12px;
    border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.1);color:#fff;
    border-radius:var(--o-r);font-size:14px;font-weight:600;
  }
  .on-burger svg{width:18px;height:18px}
}
@media (max-width:420px){
  .olaf-nav .on-crumb .grp,.olaf-nav .on-crumb .sep.g{display:none}
}
@media (prefers-reduced-motion:reduce){
  .on-sheet,.on-sheet-bg{transition:none}
}

/* ═══════════ SISSELOGIMINE (ühine kujundus) ═══════════ */
.o-login{
  position:fixed;inset:0;z-index:9999;display:flex;align-items:center;justify-content:center;
  padding:var(--o-s4);background:var(--o-bg);font-family:var(--o-font);color:var(--o-fg);
}
.o-login-card{
  width:100%;max-width:380px;padding:36px 32px 32px;
  background:var(--o-surface);border:1px solid var(--o-line);border-radius:16px;box-shadow:var(--o-sh-2);
}
.o-login-brand{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.o-login-brand .on-mark{width:30px;height:30px}
.o-login-brand span{font-size:24px;font-weight:700;letter-spacing:-.02em;color:var(--o-ink)}
.o-login-sub{color:var(--o-muted);font-size:14px;margin-bottom:24px}
.o-login label{display:block;margin-bottom:6px;font-size:13px;font-weight:600;color:var(--o-fg)}
.o-login input{
  width:100%;height:46px;margin-bottom:16px;padding:0 14px;
  background:#fff;border:1px solid var(--o-line-2);border-radius:var(--o-r);
  font-family:inherit;font-size:16px;color:var(--o-fg);outline:none;
}
.o-login input:focus{border-color:var(--o-navy);box-shadow:0 0 0 3px color-mix(in oklab,var(--o-navy) 18%,transparent)}
.o-login-btn{
  width:100%;height:46px;margin-top:6px;border:0;border-radius:var(--o-r);
  background:var(--o-navy);color:#FBF8F1;font-family:inherit;font-size:15px;font-weight:600;cursor:pointer;
}
.o-login-btn:hover{background:var(--o-ink)}
.o-login-btn:focus-visible{outline:none;box-shadow:var(--o-focus)}
.o-login-err{margin-bottom:16px;padding:10px 12px;border-radius:var(--o-r);background:#FDECEA;border:1px solid #F5C2BC;color:var(--o-err);font-size:14px}