/* =============================================================
   BUTTONS.CSS
   ============================================================= */

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.9rem 1.6rem;
  border-radius: var(--r-full);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: -0.01em;
  isolation: isolate;
  overflow: hidden;
  transition: transform var(--dur-fast) var(--ease-spring), box-shadow var(--dur-base) var(--ease-out), border-color var(--dur-base), color var(--dur-base);
}
.btn:active { transform: scale(0.97); }
.btn__arrow { transition: transform var(--dur-base) var(--ease-spring); }
.btn:hover .btn__arrow { transform: translateX(4px); }

.btn--primary {
  color: #04110e;
  background: var(--gradient-brand);
  background-size: 220% 220%;
  box-shadow: 0 8px 30px -8px color-mix(in srgb, var(--accent-violet) 55%, transparent);
}
.btn--primary:hover {
  background-position: 100% 50%;
  box-shadow: 0 12px 38px -6px color-mix(in srgb, var(--accent-violet) 70%, transparent);
}

.btn--ghost {
  color: var(--text);
  border: 1px solid var(--border-strong);
  background: var(--surface);
}
.btn--ghost:hover { border-color: var(--accent-cyan); background: var(--surface-hover); }

.btn--sm { padding: 0.65rem 1.15rem; font-size: var(--fs-xs); }

.btn--icon {
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
}
.btn--icon:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); background: var(--surface-hover); }

/* Secondary link style used inline */
.link-underline {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  color: var(--text);
  font-weight: 500;
}
.link-underline::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 100%;
  height: 1px;
  background: var(--gradient-brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-base) var(--ease-out);
}
.link-underline:hover::after { transform: scaleX(1); }