/* ═══════════════════════════════════════════════════════
   BUTTON COMPONENT  ·  buttons.css
   Shared button styles used across all sections.
═══════════════════════════════════════════════════════ */

.btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--f-body);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  padding: 18px 0;
  border: 1px solid currentColor;
  background: var(--c-bg);
  cursor: pointer;
  white-space: nowrap;
  line-height: 1;
  transition: transform 0.1s, box-shadow 0.1s ease, color 0.3s ease;
  will-change: transform;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--c-yellow);
  transform: scale(0);
  transform-origin: top left;
  transition: transform 0.6s cubic-bezier(0.19, 1, 0.22, 1);
  z-index: 0;
}

.btn--success {
  color: var(--c-black) !important;
  border-color: var(--c-yellow) !important;
}

.btn--success::before {
  transform: scale(1);
}

.btn__text {
  position: relative;
  z-index: 1;
}

.btn:hover {
  transform: scale(1.03);
  box-shadow: 0 0 15px rgba(var(--c-yellow-rgb), 0.2);
}

.btn:active {
  transform: scale(0.97);
  box-shadow: none;
  transition: transform 0.01s linear;
}

.btn--grey { color: var(--c-grey); }
.btn--yellow { color: var(--c-yellow); }