/* ============================================================
   CallD.AI — Button Components
   Primary, secondary, outline, ghost, sizes
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  font-family: var(--f-sans);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  line-height: 1;
  padding: 0.8em 1.8em;
  border-radius: var(--r-full);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

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

/* Primary: solid green */
.btn--primary {
  background-color: var(--c-green);
  color: var(--c-white);
  border-color: var(--c-green);
}

.btn--primary:hover {
  background-color: var(--c-green-dark);
  border-color: var(--c-green-dark);
  box-shadow: 0 4px 16px rgba(27, 107, 82, 0.3);
}

/* Secondary: outlined green */
.btn--secondary {
  background-color: transparent;
  color: var(--c-green);
  border-color: var(--c-green);
}

.btn--secondary:hover {
  background-color: var(--c-green);
  color: var(--c-white);
}

/* Ghost: text-only with hover bg */
.btn--ghost {
  background-color: transparent;
  color: var(--c-ink);
  border-color: transparent;
  padding: 0.6em 1.2em;
}

.btn--ghost:hover {
  background-color: rgba(27, 107, 82, 0.08);
  color: var(--c-green);
}

/* Light (for dark backgrounds) */
.btn--light {
  background-color: var(--c-white);
  color: var(--c-green);
  border-color: var(--c-white);
}

.btn--light:hover {
  background-color: var(--c-cream);
  border-color: var(--c-cream);
}

/* Outline light (for dark backgrounds) */
.btn--outline-light {
  background-color: transparent;
  color: var(--c-white);
  border-color: rgba(255, 255, 255, 0.4);
}

.btn--outline-light:hover {
  background-color: var(--c-white);
  color: var(--c-green);
  border-color: var(--c-white);
}

/* ── Sizes ── */
.btn--sm {
  font-size: var(--fs-xs);
  padding: 0.6em 1.4em;
}

.btn--lg {
  font-size: var(--fs-base);
  padding: 1em 2.4em;
}

/* ── Icon button ── */
.btn--icon {
  padding: 0.6em;
  border-radius: var(--r-md);
}

/* ── Full width ── */
.btn--full {
  width: 100%;
}

/* ── Arrow indicator (MT-style: "Learn more →") ── */
.btn .btn-arrow {
  transition: transform var(--transition-fast);
}

.btn:hover .btn-arrow {
  transform: translateX(3px);
}

/* Back button: secondary style, standard size, with left arrow */
.btn--back {
  background-color: transparent;
  color: var(--c-green);
  border-color: var(--c-green);
}

.btn--back:hover {
  background-color: var(--c-green);
  color: var(--c-white);
}

/* Text link button (no bg/border, just underline on hover) */
.btn--link {
  background: none;
  border: none;
  color: var(--c-green);
  padding: 0;
  font-weight: var(--fw-medium);
  text-decoration: none;
}

.btn--link:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ── Mobile touch targets ── */
@media (max-width: 600px) {
  .btn {
    min-height: 48px;
  }
}