/* ── Base ────────────────────────────────────────── */
.btn {
  font-family: var(--fm);
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 10px 20px;
  cursor: pointer;
  transition: transform 80ms ease,
              box-shadow var(--dur-fast),
              color var(--dur-fast);
  position: relative;
  overflow: hidden;
  border: none;
  outline: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.97);
}

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ── Primary ─────────────────────────────────────── */
.btn-primary {
  background: var(--accent);
  color: #000000;
  clip-path: polygon(8px 0%, 100% 0%, calc(100% - 8px) 100%, 0% 100%);
  z-index: 1;
}

.btn-primary:hover {
  color: #000000;
}

/* Shake on error (JS adds .btn--shake class) */
.btn--shake {
  animation: btn-shake 0.4s ease;
}
@keyframes btn-shake {
  0%, 100% { transform: translateX(0); }
  20%      { transform: translateX(-6px); }
  40%      { transform: translateX(6px); }
  60%      { transform: translateX(-4px); }
  80%      { transform: translateX(4px); }
}

/* Sweep layer — pseudo-element that slides in on hover */
.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: #4dccff;
  clip-path: inherit;
  transform: translateX(-101%);
  transition: transform 0.32s var(--ease-expo);
  pointer-events: none;
}
.btn-primary:hover::before {
  transform: translateX(0);
}
/* Text sits above sweep via z-index */
.btn-primary > *,
.btn-primary .btn-text,
.btn-primary span {
  position: relative;
  z-index: 3;
}

/* ── Secondary ───────────────────────────────────── */
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 32px;
  font-family: var(--fm);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: transparent;
  border: 1px solid var(--accent-border);
  border-radius: 2px;
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease-expo);
}

.btn-secondary:hover {
  border-color: var(--accent);
  background: var(--accent-dim);
  box-shadow: 0 0 24px var(--accent-glow);
}

/* ── Ghost ───────────────────────────────────────── */
.btn-ghost {
  background: transparent;
  color: var(--t2);
  /* SVG border-trace injected by JS; fallback border: */
  border: 1px solid rgba(255, 255, 255, 0.15);
}
.btn-ghost:hover {
  color: white;
  border-color: transparent; /* JS SVG takes over */
}
.btn-ghost > *,
.btn-ghost .btn-text,
.btn-ghost span {
  position: relative;
  z-index: 3;
  pointer-events: none;
}

/* Ghost SVG border trace (injected by buttons.js) */
.btn-ghost-svg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: visible;
}
.btn-ghost-rect {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1;
  stroke-dasharray: var(--perimeter, 9999);
  stroke-dashoffset: var(--perimeter, 9999);
  transition: stroke-dashoffset 0.38s var(--ease-expo);
}
.btn-ghost:hover .btn-ghost-rect {
  stroke-dashoffset: 0;
}

/* ── Icon Inside Buttons ────────────────────────── */
.btn-icon {
  width: 16px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ── TOUCH RESPONSIVE ───────────────────────────────────────────────── */
@media (max-width: 768px) {
  .btn,
  .btn-primary,
  .btn-ghost {
    min-height: 44px;
    padding: 12px 20px;
    font-size: 11px;
  }

  .hero-cta-row {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .hero-cta-row .btn,
  .hero-cta-row .btn-primary,
  .hero-cta-row .btn-ghost {
    width: 100%;
    text-align: center;
    justify-content: center;
  }
}