/* ── Читаемость для пользователей 40–55 лет ── */
body { font-size: 15px; }
.text-xs  { font-size: 0.8rem  !important; }
.text-sm  { font-size: 0.9rem  !important; }
.text-base{ font-size: 1rem    !important; }
input, textarea, select, button { font-size: inherit; }

/* ── Meridian code — Inter bold, not monospace (i ≠ 1) ── */
.mer-code {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-style: normal;
  letter-spacing: 0.02em;
}

/* Glass morphism */
.glass-panel {
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(40px);
  -webkit-backdrop-filter: blur(40px);
  border: 1px solid rgba(242,242,247,0.15);
}
.glow-active { box-shadow: inset 0 0 15px rgba(0,242,255,0.3); }
.glow-cyan   { box-shadow: 0 0 20px rgba(0,242,255,0.15); }
.meridian-glow-text { text-shadow: 0 0 10px rgba(0,242,255,0.5); }

/* prevent horizontal overflow in all content pages */
.md\:ml-64 { overflow-x: hidden; max-width: calc(100vw - 16rem); }

/* Scrollbar */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

/* Nav active */
.nav-active {
  background: rgba(0,242,255,0.1) !important;
  color: #00F2FF !important;
  border-right: 3px solid #00F2FF;
}

/* Pulse */
@keyframes pulse-glow {
  0%,100% { opacity:1; }
  50%      { opacity:0.4; }
}
.pulse-glow { animation: pulse-glow 2s ease-in-out infinite; }

/* Page fade-in */
@keyframes fadeUp {
  from { opacity:0; transform:translateY(10px); }
  to   { opacity:1; transform:translateY(0); }
}
.page-enter { animation: fadeUp 0.35s ease-out both; }

/* Bar fill animation */
@keyframes barFill {
  from { width: 0; }
}
.bar-animate { animation: barFill 0.6s ease-out both; }

/* Video container */
.vid-wrap {
  position: relative;
  aspect-ratio: 16/9;
  background: #0e0e0e;
  border-radius: 12px;
  overflow: hidden;
}
.vid-wrap video { width:100%; height:100%; object-fit:contain; }

/* Checkbox custom */
.sym-check-wrap input[type="checkbox"] {
  width: 18px; height: 18px;
  appearance: none;
  background: #1f1f1f;
  border: 2px solid #414755;
  border-radius: 4px;
  cursor: pointer;
  flex-shrink: 0;
  transition: all 0.2s;
  position: relative;
}
.sym-check-wrap input[type="checkbox"]:checked {
  background: #0A84FF;
  border-color: #0A84FF;
}
.sym-check-wrap input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  left: 3px; top: 0px;
  width: 6px; height: 10px;
  border: 2px solid white;
  border-top: none; border-left: none;
  transform: rotate(45deg);
}
.sym-check-wrap label { cursor: pointer; user-select: none; }
.sym-check-wrap:hover { background: rgba(255,255,255,0.05); }

/* Step indicator */
.step-circle {
  width:32px; height:32px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  font-size:13px; font-weight:700;
  border: 2px solid #414755;
  background: #1f1f1f; color:#8b90a0;
  transition: all 0.3s;
}
.step-circle.active {
  border-color: #00F2FF;
  background: rgba(0,242,255,0.15);
  color: #00F2FF;
  box-shadow: 0 0 12px rgba(0,242,255,0.3);
}
.step-circle.done {
  border-color: #0A84FF;
  background: #0A84FF;
  color: white;
}
.step-line {
  flex:1; height:2px;
  background: #414755;
  transition: background 0.4s;
}
.step-line.done { background: #0A84FF; }