/* SpalFit shared.css  v2.3.0 — Společné styly pro všechny stránky */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --bg:#070710;
  --surface:#0d0d14;
  --card:#13131f;
  --orange:#ff6b35;
  --orange-dim:rgba(255,107,53,.6);
  --orange-bg:rgba(255,107,53,.08);
  --border:rgba(255,255,255,.08);
  --border-sm:rgba(255,255,255,.05);
  --muted:rgba(255,255,255,.5);
  --muted2:rgba(255,255,255,.35);
  --muted3:rgba(255,255,255,.2);
  --green:#34d399;
  --blue:#60a5fa;
  --amber:#f59e0b;
}

body{background:var(--bg);font-family:'DM Sans',sans-serif;color:#fff;min-height:100vh}

/* ── SITE NAV ────────────────────────────────────────────────── */
.sf-nav{
  position:sticky;top:0;z-index:100;
  background:rgba(7,7,16,.92);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:0.5px solid var(--border);
}
.nav-inner{
  max-width:1100px;margin:0 auto;padding:0 24px;
  height:60px;display:flex;align-items:center;gap:20px;
}
.nav-logo{
  font-size:19px;font-weight:800;color:#f5f5f5;
  letter-spacing:-.01em;
  text-decoration:none;flex-shrink:0;
  display:flex;align-items:center;gap:2px;
  line-height:1;
}
.nav-logo:hover{color:#fff}
.nav-logo-img{height:22px;width:auto;flex-shrink:0;display:block}
.nav-links{display:flex;gap:20px;flex:1}
.nav-links a{
  color:var(--muted);font-size:14px;text-decoration:none;
  font-weight:500;transition:color .2s;
}
.nav-links a:hover,.nav-links a.active{color:#fff}
.nav-right{display:flex;align-items:center;gap:10px;flex-shrink:0}

/* Jazyky */
.lang-group{
  display:flex;gap:2px;
  background:rgba(255,255,255,.05);border-radius:8px;padding:2px;
}
.lang-btn{
  background:none;border:none;color:var(--muted2);
  font-size:11px;font-weight:700;padding:4px 8px;border-radius:6px;
  cursor:pointer;font-family:inherit;transition:.15s;
}
.lang-btn.active,.lang-btn:hover{background:rgba(255,107,53,.2);color:var(--orange)}

/* Tlačítko přihlásit / začít */
.nav-auth-btn{
  background:var(--orange);color:#fff;border:none;
  padding:8px 18px;border-radius:10px;font-size:13px;font-weight:600;
  cursor:pointer;font-family:inherit;transition:background .2s;
}
.nav-auth-btn:hover{background:#ff7d4a}

/* User area (přihlášen) */
.nav-user-area{display:flex;align-items:center;gap:8px}
.nav-user-info{
  display:flex;flex-direction:column;cursor:pointer;
  padding:4px 10px;border-radius:8px;transition:.15s;
}
.nav-user-info:hover{background:rgba(255,255,255,.06)}
.nav-user-name{font-size:13px;font-weight:600;color:#fff;line-height:1.2}
.nav-user-xp{font-size:11px;color:var(--orange)}
.nav-logout-btn{
  background:rgba(255,255,255,.06);border:0.5px solid var(--border);
  color:var(--muted);padding:6px 10px;border-radius:8px;
  font-size:13px;cursor:pointer;transition:.15s;
}
.nav-logout-btn:hover{background:rgba(255,255,255,.1);color:#fff}

/* ── HAMBURGER ───────────────────────────────────────────────── */
.hamburger{
  display:none;flex-direction:column;gap:5px;
  background:none;border:none;cursor:pointer;
  padding:4px;width:36px;height:36px;justify-content:center;
}
.hamburger span{
  display:block;width:22px;height:2px;background:var(--muted);
  border-radius:2px;transition:.25s;
}
.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ── MOBILNÍ MENU ────────────────────────────────────────────── */
.nav-menu{
  position:fixed;top:60px;left:0;right:0;bottom:0;
  background:rgba(7,7,16,.97);z-index:99;
  display:flex;flex-direction:column;
  padding:20px;gap:4px;
  transform:translateX(100%);transition:transform .3s ease;
  overflow-y:auto;
}
.nav-menu.active{transform:none}
.nav-menu a{
  display:block;padding:14px 16px;color:rgba(255,255,255,.7);
  text-decoration:none;font-size:16px;font-weight:500;
  border-radius:10px;transition:.15s;
}
.nav-menu a:hover{background:rgba(255,255,255,.05);color:#fff}
.menu-btn{
  display:block;width:100%;padding:14px 16px;
  color:rgba(255,255,255,.7);font-size:16px;font-weight:500;
  background:none;border:none;cursor:pointer;font-family:inherit;
  text-align:left;border-radius:10px;transition:.15s;
}
.menu-btn:hover{background:rgba(255,255,255,.05);color:#fff}
.menu-btn-primary{
  background:var(--orange)!important;color:#fff!important;
  font-weight:700!important;text-align:center!important;margin-bottom:8px;
}
.menu-btn-danger{color:rgba(255,100,100,.7)!important}
.menu-user-info{
  padding:16px;background:var(--card);border-radius:12px;
  border:0.5px solid var(--border);margin-bottom:4px;
}
.menu-user-name-txt{font-size:15px;font-weight:700;color:#fff}
.menu-user-xp-txt{font-size:12px;color:var(--orange);margin-top:2px}
.menu-user-streak-txt{font-size:12px;color:var(--muted2);margin-top:2px}
.menu-sep{height:0.5px;background:var(--border);margin:6px 0}

@media(max-width:700px){
  .nav-links{display:none}
  .lang-group{display:none}
  .hamburger{display:flex}
  .nav-right{margin-left:auto}
}

/* ── MODÁLY — přihlášení / profil / kontakt ──────────────────── */
.modal-overlay{
  position:fixed;inset:0;
  background:rgba(0,0,0,.65);backdrop-filter:blur(5px);
  display:flex;align-items:center;justify-content:center;
  z-index:1000;padding:16px;
}
.modal-box{
  background:#0f0f1c;border:0.5px solid rgba(255,255,255,.12);
  border-radius:20px;padding:36px 32px;
  width:100%;max-width:400px;position:relative;
}
.modal-close{
  position:absolute;top:14px;right:14px;
  background:rgba(255,255,255,.07);border:none;color:var(--muted2);
  width:30px;height:30px;border-radius:50%;font-size:13px;
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:.15s;
}
.modal-close:hover{background:rgba(255,255,255,.12);color:#fff}
.modal-logo{text-align:center;margin-bottom:20px}
.modal-logo img{height:36px}
.modal-title{font-size:20px;font-weight:800;color:#fff;text-align:center;margin-bottom:24px}

.modal-error,.modal-success,.modal-success-inline{
  font-size:13px;padding:10px 14px;border-radius:9px;margin-bottom:16px;display:none;
}
.modal-error{background:rgba(248,113,113,.1);border:0.5px solid rgba(248,113,113,.3);color:#fca5a5}
.modal-success,.modal-success-inline{background:rgba(52,211,153,.1);border:0.5px solid rgba(52,211,153,.3);color:#6ee7b7}

.modal-input-group{
  display:flex;align-items:center;
  background:rgba(255,255,255,.05);border:0.5px solid rgba(255,255,255,.1);
  border-radius:11px;padding:0 14px;margin-bottom:12px;gap:10px;
  transition:border-color .2s,background .2s;
}
.modal-input-group:focus-within{border-color:rgba(255,107,53,.45);background:rgba(255,107,53,.04)}
.modal-icon{font-size:16px;flex-shrink:0;color:var(--muted2)}
.modal-input-group input{
  background:none;border:none;outline:none;
  color:#fff;font-size:14px;font-family:inherit;
  padding:13px 0;flex:1;min-width:0;
}
.modal-input-group input::placeholder{color:rgba(255,255,255,.28)}
.modal-textarea{
  background:none;border:none;outline:none;
  color:#fff;font-size:14px;font-family:inherit;
  padding:13px 0;flex:1;min-width:0;
  resize:vertical;min-height:90px;
}
.modal-textarea::placeholder{color:rgba(255,255,255,.28)}
.modal-pw-toggle{
  background:none;border:none;color:var(--muted2);cursor:pointer;
  padding:4px;display:flex;align-items:center;flex-shrink:0;transition:color .15s;
}
.modal-pw-toggle:hover{color:#fff}
.modal-forgot-row{text-align:right;margin-bottom:16px;margin-top:-4px}
.modal-link{color:var(--orange);font-size:13px;text-decoration:none;font-weight:500}
.modal-link:hover{color:#ff8c5a}
.modal-submit{
  width:100%;background:var(--orange);color:#fff;border:none;
  padding:13px;border-radius:11px;font-size:14px;font-weight:700;
  cursor:pointer;font-family:inherit;margin-top:4px;
  display:flex;align-items:center;justify-content:center;gap:8px;
  transition:background .2s,transform .15s;position:relative;
}
.modal-submit:hover:not(:disabled){background:#ff7d4a;transform:translateY(-1px)}
.modal-submit:disabled{opacity:.7;cursor:not-allowed;transform:none}
.btn-text{transition:opacity .15s}
.modal-submit.loading .btn-text{opacity:0}
.btn-spinner{
  width:18px;height:18px;
  border:2px solid rgba(255,255,255,.3);border-top-color:#fff;
  border-radius:50%;animation:spin .7s linear infinite;
  position:absolute;display:none;
}
.modal-submit.loading .btn-spinner{display:block}
@keyframes spin{to{transform:rotate(360deg)}}

.modal-divider{
  text-align:center;color:var(--muted2);font-size:12px;
  margin:18px 0;position:relative;
}
.modal-divider::before,.modal-divider::after{
  content:'';position:absolute;top:50%;
  width:35%;height:0.5px;background:rgba(255,255,255,.1);
}
.modal-divider::before{left:0}
.modal-divider::after{right:0}
.modal-footer{text-align:center;font-size:13px;color:var(--muted2)}
.modal-field-error{
  color:#fca5a5;font-size:11px;
  margin-top:-8px;margin-bottom:10px;display:none;padding-left:4px;
}
.pw-strength{display:flex;align-items:center;gap:8px;margin-top:-6px;margin-bottom:10px}
.pw-strength-track{flex:1;height:4px;background:rgba(255,255,255,.08);border-radius:999px;overflow:hidden}
.pw-strength-bar{height:100%;border-radius:999px;transition:width .3s,background .3s;width:0%}
.pw-strength-label{font-size:11px;color:var(--muted2);min-width:60px;text-align:right}
input.field-error{border-color:rgba(248,113,113,.5)!important}

/* ── PROFIL MODAL ────────────────────────────────────────────── */
.profile-avatar-lg{
  width:64px;height:64px;border-radius:50%;
  background:rgba(255,107,53,.2);border:2px solid rgba(255,107,53,.35);
  display:flex;align-items:center;justify-content:center;
  font-size:24px;font-weight:800;color:var(--orange);
  margin:0 auto 16px;
}
.profile-stats-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;margin-bottom:20px}
.profile-stat{
  background:rgba(255,255,255,.03);border:0.5px solid var(--border-sm);
  border-radius:10px;padding:12px;text-align:center;
}
.profile-stat-val{font-size:20px;font-weight:800;color:var(--orange)}
.profile-stat-lbl{font-size:10px;color:var(--muted2);margin-top:2px}
.profile-level-wrap{margin-bottom:20px}
.profile-level-label{
  display:flex;justify-content:space-between;
  font-size:11px;color:var(--muted2);margin-bottom:6px;
}
.profile-level-bar{height:6px;background:rgba(255,255,255,.07);border-radius:999px;overflow:hidden}
.profile-level-fill{height:100%;background:var(--orange);border-radius:999px;transition:width .5s ease}
.profile-save-msg{text-align:center;font-size:13px;color:var(--green);margin-top:8px;min-height:20px}
.profile-section-lbl{
  display:block;font-size:10px;font-weight:700;
  text-transform:uppercase;letter-spacing:.08em;
  color:var(--muted2);margin:20px 0 10px;
}
.profile-ach-grid{display:flex;flex-wrap:wrap;gap:6px}
.profile-ach-chip{
  display:flex;align-items:center;gap:6px;
  background:rgba(255,107,53,.08);border:0.5px solid rgba(255,107,53,.2);
  border-radius:8px;padding:5px 10px;font-size:12px;
}
.profile-ach-chip .e{font-size:15px}
.profile-ach-chip .n{color:rgba(255,255,255,.7);font-weight:500}
.profile-no-ach{color:var(--muted2);font-size:13px}

/* ── ACHIEVEMENT TOAST ───────────────────────────────────────── */
.achievement-toast{
  position:fixed;bottom:24px;right:24px;
  background:#1a1a2e;border:0.5px solid rgba(255,107,53,.35);
  border-radius:14px;padding:14px 18px;
  display:flex;align-items:center;gap:12px;
  box-shadow:0 8px 32px rgba(0,0,0,.5);
  z-index:2000;transform:translateY(20px);opacity:0;
  transition:transform .35s ease,opacity .35s ease;max-width:300px;
}
.achievement-toast.show{transform:none;opacity:1}
.achievement-toast .ach-icon{font-size:28px;flex-shrink:0}
.achievement-toast strong{display:block;font-size:13px;color:var(--orange);font-weight:700}
.achievement-toast small{font-size:12px;color:var(--muted2);margin-top:2px;display:block}

/* ── PRIVACY NOTICE ──────────────────────────────────────────── */
#privacyNotice{
  position:fixed;bottom:0;left:0;right:0;
  background:#1a1a2e;border-top:0.5px solid var(--border);
  padding:16px 24px;display:none;align-items:center;
  gap:16px;z-index:500;flex-wrap:wrap;
}
#privacyNotice p{font-size:13px;color:var(--muted2);flex:1;min-width:200px;line-height:1.5}
.privacy-btns{display:flex;gap:8px;flex-shrink:0}
.privacy-btn-acc{
  background:var(--orange);color:#fff;border:none;
  padding:8px 18px;border-radius:8px;
  font-size:13px;font-weight:600;cursor:pointer;font-family:inherit;
}
.privacy-btn-dec{
  background:rgba(255,255,255,.07);color:var(--muted2);
  border:0.5px solid var(--border);padding:8px 14px;
  border-radius:8px;font-size:13px;cursor:pointer;font-family:inherit;
}

/* ── FOOTER ──────────────────────────────────────────────────── */
footer{background:var(--bg)}
.site-footer{
  border-top:0.5px solid var(--border);
  padding:24px;
  display:flex;justify-content:space-between;align-items:center;
  flex-wrap:wrap;gap:16px;
  max-width:1100px;margin:0 auto;
}
.footer-copy{font-size:13px;color:rgba(255,255,255,.25)}
.footer-links{display:flex;gap:20px;align-items:center}
.footer-links a{
  font-size:13px;color:rgba(255,255,255,.35);
  text-decoration:none;transition:color .2s;
}
.footer-links a:hover{color:rgba(255,255,255,.7)}
.footer-contact-btn{
  background:none;border:0.5px solid var(--border);
  color:rgba(255,255,255,.35);font-size:13px;font-family:inherit;
  padding:7px 14px;border-radius:8px;cursor:pointer;transition:.2s;
}
.footer-contact-btn:hover{border-color:rgba(255,107,53,.3);color:rgba(255,107,53,.7)}
@media(max-width:700px){
  .site-footer{flex-direction:column;text-align:center}
  .footer-links{justify-content:center}
}

/* ── PWA iOS HINT ────────────────────────────────────────────── */
#pwaIosHint{
  position:fixed;bottom:20px;left:50%;
  transform:translateX(-50%);
  background:#1a1a2e;border:0.5px solid var(--border);border-radius:14px;
  padding:14px 20px;display:none;align-items:center;gap:12px;
  z-index:500;max-width:340px;width:calc(100% - 32px);
  box-shadow:0 8px 32px rgba(0,0,0,.5);
}
#pwaIosHint p{font-size:12px;color:var(--muted2);line-height:1.5;flex:1}
#pwaIosHint p strong{color:#fff;display:block;margin-bottom:3px}
.pwa-dismiss{
  background:none;border:none;color:var(--muted2);
  font-size:20px;cursor:pointer;padding:0;line-height:1;flex-shrink:0;
}

/* ── NAV AVATAR (mobil) ──────────────────────────────────────── */
.nav-user-avatar{
  display:none;width:34px;height:34px;border-radius:50%;
  background:rgba(255,107,53,.18);border:1.5px solid rgba(255,107,53,.35);
  color:var(--orange);font-size:12px;font-weight:800;
  align-items:center;justify-content:center;
  cursor:pointer;flex-shrink:0;user-select:none;
}
@media(max-width:700px){
  .nav-user-info,.nav-logout-btn{display:none}
  .nav-user-avatar{display:flex}
}

/* ── LOGOUT CONFIRM ──────────────────────────────────────────── */
.logout-confirm-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.7);
  backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);
  display:flex;align-items:center;justify-content:center;
  z-index:1100;padding:16px;
}
.logout-confirm-box{
  background:#0f0f1c;border:0.5px solid rgba(255,255,255,.12);
  border-radius:16px;padding:28px 24px;max-width:320px;width:100%;text-align:center;
}
.logout-confirm-title{font-size:16px;font-weight:800;color:#fff;margin-bottom:20px}
.logout-confirm-actions{display:flex;gap:8px}
.logout-confirm-yes{
  flex:1;background:#ef4444;color:#fff;border:none;border-radius:10px;
  padding:11px;font-size:14px;font-weight:700;cursor:pointer;font-family:inherit;transition:.2s;
}
.logout-confirm-yes:hover{background:#dc2626}
.logout-confirm-no{
  flex:1;background:rgba(255,255,255,.07);color:var(--muted2);
  border:0.5px solid var(--border);border-radius:10px;
  padding:11px;font-size:14px;cursor:pointer;font-family:inherit;transition:.15s;
}
.logout-confirm-no:hover{background:rgba(255,255,255,.12);color:#fff}