.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:50px;padding:0 22px;border-radius:16px;border:1px solid transparent;
  cursor:pointer;transition:transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease;
  font-weight:700;text-align:center
}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#03111b;box-shadow:0 14px 32px rgba(52,179,255,.25)}
.btn-secondary{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16);color:#eef8ff}
.btn-ghost{background:rgba(0,0,0,.18);border-color:rgba(173,210,255,.16);color:#d9ecff}
.btn-small{min-height:42px;padding:0 16px;border-radius:14px}
.btn-full{width:100%}
.lang-btn,.menu-toggle{
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:#eaf7ff;border-radius:14px;cursor:pointer
}
.lang-btn{padding:10px 12px;font-size:.88rem}
.lang-btn.active{background:rgba(52,179,255,.17);border-color:rgba(52,179,255,.45)}
.menu-toggle{display:none;padding:12px}
.menu-toggle span{display:block;width:22px;height:2px;background:#fff;margin:4px 0;border-radius:2px}
.hero-card,.panel,.glass-panel,.feature-card,.calendar-toolbar,.calendar-legend{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)
}
.hero-card,.glass-panel,.panel,.feature-card{padding:26px}
.hero-card-top,.info-lines,.stat-cards{display:grid;gap:16px}
.stat-cards{grid-template-columns:repeat(3,1fr)}
.mini-card{
  padding:18px;border-radius:18px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.09);
  display:grid;gap:8px;text-align:center
}
.mini-card strong{font-size:1.55rem}
.feature-card{display:grid;gap:12px}
.feature-card h3{font-size:1.18rem}
.button-stack{display:grid;gap:12px}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.form-grid .full{grid-column:1/-1}
label{display:block;margin-bottom:8px;color:#dff0ff;font-weight:600}
input,select,textarea{
  width:100%;border:none;outline:none;padding:14px 16px;border-radius:16px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);color:#fff
}
textarea{resize:vertical}
.result-box{margin-top:14px;padding:16px;border-radius:16px}
.result-box.success{background:rgba(47,224,181,.12);border:1px solid rgba(47,224,181,.25);color:#d9fff2}
.result-box.error{background:rgba(255,98,125,.12);border:1px solid rgba(255,98,125,.25);color:#ffe5ea}
.steps-list{list-style:none;padding:0;margin:0;display:grid;gap:14px}
.steps-list li{display:grid;grid-template-columns:48px 1fr;gap:14px;align-items:start}
.steps-list span{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary-2),var(--accent));font-weight:800;color:#071019
}
.table-wrap{overflow:auto}
.admin-table{width:100%;border-collapse:collapse;min-width:1100px}
.admin-table th,.admin-table td{padding:14px;border-bottom:1px solid rgba(255,255,255,.08);text-align:left;vertical-align:top}
.status-pill{padding:7px 12px;border-radius:999px;font-size:.82rem;font-weight:700;display:inline-flex}
.status-waiting{background:rgba(255,179,71,.14);color:#ffd39b}
.status-confirmed{background:rgba(47,224,181,.14);color:#b7ffe9}
.status-rejected,.status-cancelled{background:rgba(255,98,125,.14);color:#ffd1da}
.action-row{display:flex;flex-wrap:wrap;gap:8px}
.action-btn{padding:9px 12px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.05);color:#fff;cursor:pointer}
.calendar-wrap{overflow:auto}
.calendar-grid{min-width:760px;border-collapse:separate;border-spacing:10px}
.calendar-grid th,.calendar-grid td{text-align:center;padding:10px;border-radius:14px}
.calendar-grid th{color:#cde4ff}
.calendar-slot{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);min-width:88px}
.slot-free{background:rgba(47,224,181,.12);border-color:rgba(47,224,181,.26)}
.slot-booked{background:rgba(255,98,125,.12);border-color:rgba(255,98,125,.26)}
.slot-lesson{background:rgba(52,179,255,.12);border-color:rgba(52,179,255,.26)}
.slot-event{background:rgba(138,92,255,.14);border-color:rgba(138,92,255,.26)}
.legend{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:14px;background:rgba(255,255,255,.05);margin-right:10px;margin-bottom:10px}
.legend::before{content:"";width:12px;height:12px;border-radius:999px;background:#fff}
.legend-free::before{background:var(--primary)}
.legend-booked::before{background:var(--danger)}
.legend-lesson::before{background:var(--primary-2)}
.legend-event::before{background:var(--accent)}
.contact-lines{display:grid;gap:16px;margin:18px 0}
.map-panel iframe{width:100%;height:100%;min-height:420px;border:0;border-radius:20px}


.nav .nav-admin{display:inline-flex !important}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:52px;padding:0 22px;border-radius:16px;border:1px solid transparent;
  cursor:pointer;transition:transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease, filter .18s ease;
  font-weight:800;text-align:center;letter-spacing:.01em
}
.btn:hover{transform:translateY(-2px);filter:brightness(1.03)}
.btn:active{transform:translateY(0)}
.btn:focus-visible,.action-btn:focus-visible,.lang-btn:focus-visible,.menu-toggle:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid rgba(135,206,255,.95);outline-offset:2px
}
.btn-primary{background:linear-gradient(135deg,#23a7ff,#1767ff);color:#fff;box-shadow:0 16px 38px rgba(29,113,255,.34);border-color:rgba(255,255,255,.16)}
.btn-primary:hover{box-shadow:0 18px 42px rgba(29,113,255,.42)}
.btn-secondary{background:linear-gradient(180deg,rgba(255,255,255,.12),rgba(255,255,255,.07));border-color:rgba(255,255,255,.16);color:#eef8ff}
.btn-ghost{background:rgba(0,0,0,.18);border-color:rgba(173,210,255,.16);color:#e7f4ff}
.action-btn{padding:9px 12px;border-radius:12px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.05);color:#fff;cursor:pointer;font-weight:700}
.action-btn:hover{background:rgba(255,255,255,.09)}
.action-btn-ok{background:rgba(34,197,94,.16);border-color:rgba(34,197,94,.28);color:#dcfce7}
.action-btn-warn{background:rgba(245,158,11,.16);border-color:rgba(245,158,11,.28);color:#fef3c7}
.action-btn-danger{background:rgba(239,68,68,.16);border-color:rgba(239,68,68,.28);color:#fee2e2}
input,select,textarea{
  width:100%;border:none;outline:none;padding:14px 16px;border-radius:16px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);color:#fff;box-shadow:inset 0 1px 0 rgba(255,255,255,.04)
}
input::placeholder,textarea::placeholder{color:#a8bfd7}
.result-box{margin-top:14px;padding:16px;border-radius:16px}
.result-box.success{background:rgba(47,224,181,.12);border:1px solid rgba(47,224,181,.25);color:#d9fff2}
.result-box.error{background:rgba(255,98,125,.12);border:1px solid rgba(255,98,125,.25);color:#ffe5ea}
.quick-chip-row{display:flex;gap:10px;flex-wrap:wrap}
.quick-filter{padding:10px 14px;border-radius:999px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.04);color:#eef8ff;cursor:pointer;font-weight:700}
.quick-filter.active{background:linear-gradient(135deg,#23a7ff,#1767ff);border-color:transparent;color:#fff;box-shadow:0 12px 26px rgba(29,113,255,.25)}
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:16px}
.stat-pill-card{padding:16px 18px;border-radius:18px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);display:grid;gap:6px}
.stat-pill-card strong{font-size:1.8rem;line-height:1}



/* Premium UI upgrade */
.btn{
  position:relative;
  overflow:hidden;
  min-height:56px;
  padding:0 24px;
  border-radius:18px;
  border:1px solid rgba(255,255,255,.14);
  box-shadow:0 16px 34px rgba(0,0,0,.22), inset 0 1px 0 rgba(255,255,255,.12);
  backdrop-filter:blur(10px);
}
.btn::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(120deg, rgba(255,255,255,.22), rgba(255,255,255,0) 28%, rgba(255,255,255,.12) 52%, rgba(255,255,255,0) 72%);
  transform:translateX(-130%);
  transition:transform .65s ease;
  pointer-events:none;
}
.btn:hover::before{transform:translateX(130%)}
.btn-primary{
  background:linear-gradient(135deg,#3dd4ff 0%, #216dff 52%, #1437b8 100%);
  color:#fff;
  border-color:rgba(184,222,255,.28);
  box-shadow:0 18px 42px rgba(24,94,255,.34), inset 0 1px 0 rgba(255,255,255,.22);
}
.btn-primary:hover{box-shadow:0 22px 48px rgba(24,94,255,.42), inset 0 1px 0 rgba(255,255,255,.24)}
.btn-secondary{
  background:linear-gradient(135deg,rgba(47,224,181,.22),rgba(15,111,103,.42));
  color:#ecfffb;
  border-color:rgba(111,255,222,.24);
  box-shadow:0 16px 36px rgba(15,111,103,.24), inset 0 1px 0 rgba(255,255,255,.12);
}
.btn-ghost{
  background:linear-gradient(180deg,rgba(255,255,255,.11),rgba(255,255,255,.05));
  color:#eff7ff;
  border-color:rgba(189,220,255,.18);
}
.hero-actions .btn,.button-stack .btn{font-size:1rem}
.feature-card,.hero-card,.glass-panel,.footer-card,.mini-card{
  position:relative;
  overflow:hidden;
  background:linear-gradient(180deg, rgba(18,30,45,.92), rgba(10,18,28,.86));
  border:1px solid rgba(171,214,255,.12);
  box-shadow:0 22px 52px rgba(0,0,0,.26), inset 0 1px 0 rgba(255,255,255,.05);
}
.feature-card::before,.hero-card::before,.glass-panel::before,.footer-card::before,.mini-card::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg, transparent, rgba(255,255,255,.35), transparent);
  opacity:.7;
}
.feature-card{
  padding:28px;
  border-radius:28px;
  transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.feature-card:hover{
  transform:translateY(-5px);
  border-color:rgba(110,189,255,.24);
  box-shadow:0 28px 58px rgba(0,0,0,.32), 0 0 0 1px rgba(78,170,255,.08) inset;
}
.feature-card h3{font-size:1.22rem;line-height:1.25}
.feature-card p{margin:0}
.lang-btn,.menu-toggle{
  background:linear-gradient(180deg,rgba(255,255,255,.09),rgba(255,255,255,.04));
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 12px 24px rgba(0,0,0,.18);
}
.btn-admin-top{
  min-height:46px;
  padding:0 18px;
  border-radius:14px;
  font-size:.92rem;
  font-weight:800;
  background:linear-gradient(135deg,#ffca45,#ff8a00);
  color:#1b1200;
  border-color:rgba(255,222,146,.35);
  box-shadow:0 14px 30px rgba(255,138,0,.24);
}
.floating-admin-left{
  position:fixed;
  left:16px;
  bottom:18px;
  z-index:56;
  min-height:48px;
  padding:0 18px;
  border-radius:999px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:linear-gradient(135deg,#ffca45,#ff8a00);
  color:#1b1200;
  font-weight:900;
  letter-spacing:.03em;
  border:1px solid rgba(255,226,158,.42);
  box-shadow:0 16px 34px rgba(0,0,0,.28), 0 10px 24px rgba(255,138,0,.18);
}
.floating-admin-left:hover{transform:translateY(-2px);filter:brightness(1.03)}
.home-calendar-cta .btn{min-width:220px}


/* Premium navigation cards */
.nav{flex-wrap:wrap;gap:10px}
.nav a{
  position:relative;
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:0 16px;
  border-radius:18px;
  background:linear-gradient(180deg,rgba(255,255,255,.12),rgba(255,255,255,.05));
  border:1px solid rgba(152,201,255,.16);
  box-shadow:0 12px 26px rgba(0,0,0,.22), inset 0 1px 0 rgba(255,255,255,.09);
  color:#eef7ff;
  font-weight:800;
  letter-spacing:.01em;
  text-align:center;
  overflow:hidden;
  transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease, background .18s ease, color .18s ease;
}
.nav a::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(71,187,255,.18),rgba(23,103,255,.06));
  opacity:.9;pointer-events:none;
}
.nav a:hover,.nav a.active{
  color:#fff;
  transform:translateY(-2px);
  border-color:rgba(129,203,255,.38);
  box-shadow:0 18px 36px rgba(0,0,0,.28), 0 8px 22px rgba(35,135,255,.18);
  background:linear-gradient(180deg,rgba(255,255,255,.16),rgba(255,255,255,.08));
}
.nav a.active{
  background:linear-gradient(135deg,rgba(31,157,255,.28),rgba(23,103,255,.18));
}
.nav .nav-admin{
  background:linear-gradient(135deg,#ffcd57,#ff9100) !important;
  color:#1b1200 !important;
  border-color:rgba(255,227,163,.48) !important;
  box-shadow:0 16px 34px rgba(0,0,0,.24),0 10px 24px rgba(255,145,0,.22) !important;
}
.nav .nav-admin::before{background:linear-gradient(135deg,rgba(255,255,255,.24),rgba(255,255,255,.04))}
.topbar{box-shadow:0 14px 34px rgba(0,0,0,.22)}
.topbar-inner{gap:18px}
.btn-admin-top{
  background:linear-gradient(135deg,#ffd35c,#ff9f0f);
  box-shadow:0 16px 34px rgba(255,159,15,.26);
}
.floating-admin-left{left:16px;bottom:20px}


/* live regions */
[aria-live]{min-height:1px}