/* =====================================================================
   LÉTOKRUH — Auth (login / registrace / obnova hesla)
   Split-screen woodcraft · tmavý dřevěný brand panel + papírový formulář
   Načítá se po per-page CSS → přebíjí.
   ===================================================================== */
:root{
  --paper:#f1ebdd;--surface:#fffdf8;--surface-2:#f8f2e6;
  --ink:#241b11;--head:#2c2114;--body:#574b3b;--muted:#9b8c77;--faint:#b6a890;
  --line:#e7ddc9;--line-soft:#efe8d9;
  --amber:#b1521f;--amber-d:#8f3f16;--amber-rgb:177,82,31;--amber-soft:#f6e6d4;
  --oak:#bf8746;--cream:#f4ead8;--espresso:#1d140c;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{
  font-family:"Hanken Grotesk",-apple-system,"Segoe UI",sans-serif;
  background:var(--paper);color:var(--body);-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
.center-content{min-height:100vh}
::selection{background:var(--amber);color:#fff8ef}

/* ---------- SHELL ---------- */
.login-cover{
  display:grid;grid-template-columns:1.05fr .95fr;min-height:100vh;width:100%;
}
@media(max-width:920px){.login-cover{grid-template-columns:1fr}}

/* ======================================================
   LEVÝ PANEL — dřevěný brand (.login-illustration)
   ====================================================== */
.login-illustration{
  position:relative;overflow:hidden;display:flex;flex-direction:column;
  justify-content:space-between;padding:clamp(34px,4vw,64px);
  background:
    radial-gradient(120% 90% at 20% 0%, #3a2814 0%, transparent 55%),
    radial-gradient(120% 120% at 100% 100%, #50361a 0%, transparent 55%),
    linear-gradient(155deg,#241910,#160f08);
  color:var(--cream);
}
@media(max-width:920px){
  .login-illustration{min-height:230px;padding:26px clamp(20px,6vw,40px)}
}
/* grain */
.login-illustration::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E");
}
/* letokruhy */
.login-illustration::before{
  content:"";position:absolute;top:50%;left:50%;width:min(118%,860px);aspect-ratio:1;
  transform:translate(-50%,-50%);z-index:0;
  background:
    repeating-radial-gradient(circle at center,
      transparent 0 32px,
      rgba(244,234,216,.07) 32px 33px,
      transparent 33px 64px);
  -webkit-mask:radial-gradient(circle at center,#000 60%,transparent 78%);
          mask:radial-gradient(circle at center,#000 60%,transparent 78%);
  animation:lkspin 90s linear infinite;
}
@keyframes lkspin{to{transform:translate(-50%,-50%) rotate(360deg)}}

.login-illustration > *{position:relative;z-index:1}
.login-illustration .app-brand{display:inline-flex;align-items:center;gap:14px;text-decoration:none}
.login-illustration .app-brand .logo-img{display:none}
.brand-mark{display:inline-flex;align-items:center;gap:13px;color:var(--cream);text-decoration:none}
.brand-mark svg{width:38px;height:38px;flex:none}
.brand-mark b{font-family:"Fraunces",serif;font-weight:600;font-size:1.5rem;letter-spacing:-.01em}
.brand-mark b i{font-style:normal;color:var(--oak)}

.brand-hero{margin:auto 0}
.brand-hero .kick{
  font-family:"Hanken Grotesk";font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;
  color:rgba(244,234,216,.6);display:flex;align-items:center;gap:14px;margin-bottom:24px;
}
.brand-hero .kick::before{content:"";width:42px;height:1px;background:rgba(244,234,216,.4)}
.brand-hero h2{
  font-family:"Fraunces",serif;font-weight:330;font-size:clamp(2rem,3.6vw,3.4rem);line-height:1.04;
  letter-spacing:-.02em;color:var(--cream);margin:0;max-width:14ch;
}
.brand-hero h2 em{font-style:italic;color:var(--oak)}
@media(max-width:920px){.brand-hero{display:none}}

.brand-foot{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.brand-foot .chip{
  font-family:"Hanken Grotesk";font-size:.72rem;letter-spacing:.04em;
  color:rgba(244,234,216,.72);border:1px solid rgba(244,234,216,.18);
  padding:5px 12px;border-radius:100px;background:rgba(244,234,216,.04);
}
@media(max-width:920px){.brand-foot{display:none}}

/* ======================================================
   PRAVÝ PANEL — formulář (.login-form-side)
   ====================================================== */
.login-form-side{
  position:relative;display:flex;align-items:center;justify-content:center;
  padding:clamp(30px,4vw,64px);background:var(--paper);
  background-image:
    radial-gradient(90% 70% at 100% 0%, #efe4cc 0%, transparent 50%),
    radial-gradient(80% 60% at 0% 100%, #ece3cf 0%, transparent 55%);
}
.login-form-side > form,
.login-form-side .reset-form,
.login-form-side .forgot-form{
  width:100%;max-width:420px;animation:lkrise .7s var(--ease) both;
}
@keyframes lkrise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}

/* loading overlay */
.login-form-side .overlay{position:absolute;inset:0;background:rgba(241,235,221,.6);z-index:8;display:none;backdrop-filter:blur(2px)}
.login-form-side .spinner{position:absolute;top:50%;left:50%;width:54px;height:54px;margin:-27px 0 0 -27px;border:4px solid var(--amber-soft);border-top-color:var(--amber);border-radius:50%;display:none;z-index:9;animation:lkroll .8s linear infinite}
@keyframes lkroll{to{transform:rotate(360deg)}}

/* headings */
.login-form-side h4{
  font-family:"Fraunces",serif;font-weight:420;color:var(--head);
  font-size:clamp(1.7rem,2.6vw,2.2rem);letter-spacing:-.015em;line-height:1.1;margin:0 0 8px;
}
.login-form-side h4 span{display:inline-block;animation:wave 2.6s var(--ease) infinite;transform-origin:70% 70%}
@keyframes wave{0%,60%,100%{transform:rotate(0)}10%{transform:rotate(16deg)}25%{transform:rotate(-10deg)}40%{transform:rotate(12deg)}}
.login-form-side > form > p,.login-form-side p{color:var(--muted);margin:0 0 26px;font-size:1rem}

/* labels & inputs */
.login-form-side .form-label{display:block;font-weight:600;color:var(--head);font-size:.84rem;letter-spacing:.01em;margin-bottom:7px}
.login-form-side .form-control{
  display:block;width:100%;padding:.78rem 1rem;font-size:1rem;line-height:1.4;
  color:var(--ink);background:var(--surface);border:1.5px solid var(--line);border-radius:13px;
  transition:border-color .25s,box-shadow .25s,background .25s;outline:none;
}
.login-form-side .form-control::placeholder{color:var(--faint)}
.login-form-side .form-control:focus{border-color:var(--amber);box-shadow:0 0 0 4px rgba(var(--amber-rgb),.13);background:#fff}
.login-form-side .mb-3,.login-form-side .mb-2{margin-bottom:18px}

/* password eye */
.password-wrapper{position:relative}
.password-wrapper .form-control{padding-right:3rem}
.toggle-password{position:absolute;top:50%;right:14px;transform:translateY(-50%);cursor:pointer;color:var(--faint);transition:color .2s;font-size:.95rem}
.toggle-password:hover{color:var(--amber)}

/* password strength */
.password-strength{margin-top:9px}
.strength-bar{height:5px;border-radius:10px;background:var(--line);overflow:hidden}
.strength-fill{height:100%;width:0;border-radius:10px;background:var(--amber);transition:width .35s var(--ease),background .35s}
.strength-text{font-size:.76rem;color:var(--muted);margin-top:5px;font-weight:500}

/* options row */
.login-form-options{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:4px 0 22px}
.login-form-options .form-check{display:flex;align-items:center;gap:8px;margin:0}
.login-form-options .form-check-input{width:18px;height:18px;margin:0;border:1.5px solid var(--line);border-radius:6px;cursor:pointer;accent-color:var(--amber)}
.login-form-options .form-check-input:checked{background-color:var(--amber);border-color:var(--amber)}
.login-form-options .form-check-label{color:var(--body);font-size:.92rem;cursor:pointer}
.login-form-options a,.login-form-register a,.login-form-side a{color:var(--amber);text-decoration:none;font-weight:600;transition:color .2s}
.login-form-options a:hover,.login-form-register a:hover,.login-form-side a:hover{color:var(--amber-d)}

/* primary button */
.login-form-side .btn-primary{
  display:flex;align-items:center;justify-content:center;width:100%;gap:10px;
  padding:.86rem 1.2rem;font-family:"Hanken Grotesk";font-weight:700;font-size:1.02rem;
  color:#fff8ef;background:linear-gradient(100deg,var(--amber),var(--amber-d));
  border:none;border-radius:13px;cursor:pointer;letter-spacing:.01em;
  box-shadow:0 8px 20px rgba(var(--amber-rgb),.28);transition:transform .3s var(--ease),box-shadow .3s,filter .3s;
}
.login-form-side .btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(var(--amber-rgb),.36);filter:saturate(1.08)}
.login-form-side .btn-primary:active{transform:translateY(0)}

.login-form-register{text-align:center;margin-top:20px;color:var(--muted);font-size:.94rem}

/* divider */
.divider{display:flex;align-items:center;text-align:center;color:var(--faint);margin:26px 0 20px;font-size:.78rem}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--line)}
.divider .divider-text{padding:0 16px;text-transform:uppercase;letter-spacing:.14em;font-weight:600}

/* social */
.login-form-social{display:flex;gap:12px;justify-content:center}
.login-form-social .btn{
  width:50px;height:50px;display:grid;place-items:center;border-radius:14px;
  background:var(--surface);border:1.5px solid var(--line);color:var(--body);font-size:1.05rem;cursor:pointer;
  transition:transform .3s var(--ease),border-color .3s,color .3s,background .3s,box-shadow .3s;
}
.login-form-social .btn:hover{transform:translateY(-3px);border-color:var(--amber);color:var(--amber);box-shadow:var(--lk-shadow,0 8px 18px rgba(74,52,24,.12))}
.login-form-social .facebook-login-btn:hover{color:#1877f2;border-color:#1877f2}
.login-form-social .google-login-btn:hover{color:#ea4335;border-color:#ea4335}

/* alerts */
.alert{border-radius:13px;border:1px solid var(--line);padding:12px 16px;margin-bottom:18px;font-size:.92rem;position:relative}
.alert-warning{background:#f8eccb;border-color:#ecd29a;color:#7d5a12}
.alert-primary{background:var(--amber-soft);border-color:#ecd9bf;color:var(--amber-d)}
.alert strong{font-weight:700}
.btn-close{position:absolute;top:12px;right:12px;background:none;border:0;font-size:1rem;cursor:pointer;opacity:.5}
.btn-close:hover{opacity:1}

/* utility helpers used in templates */
.gap-10{gap:10px}
.my-6{margin-top:1.6rem;margin-bottom:1.6rem}