/* BUTTON — premium architectural feel */

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 22px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition:
    background-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out);
  border: 1px solid transparent;
  white-space: nowrap;
  text-decoration: none;
}

.btn--lg {
  padding: 18px 28px;
  font-size: 15px;
}

.btn--sm {
  padding: 10px 16px;
  font-size: 13px;
}

/* PRIMARY — dark olive */
.btn--primary {
  background: var(--color-primary);
  color: var(--color-warm-bg);
  border-color: var(--color-primary);
}
.btn--primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px -12px rgba(16, 19, 16, 0.45);
}
.btn--primary:hover .btn__arrow {
  transform: translateX(6px);
}

/* SECONDARY — outlined */
.btn--secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn--secondary:hover {
  background: var(--color-primary);
  color: var(--color-warm-bg);
  transform: translateY(-2px);
}
.btn--secondary:hover .btn__arrow {
  transform: translateX(6px);
}

/* GHOST — text + arrow */
.btn--ghost {
  background: transparent;
  color: var(--color-primary);
  padding: 6px 0;
  border: 0;
  border-radius: 0;
  border-bottom: 1px solid var(--color-primary);
}
.btn--ghost:hover {
  color: var(--color-secondary-olive);
}
.btn--ghost:hover .btn__arrow {
  transform: translateX(6px);
}

/* ON DARK SURFACE */
.btn--inverse {
  background: var(--color-warm-bg);
  color: var(--color-primary);
  border-color: var(--color-warm-bg);
}
.btn--inverse:hover {
  background: var(--color-pure-white);
  transform: translateY(-2px);
}
.btn--inverse:hover .btn__arrow {
  transform: translateX(6px);
}

/* ARROW */
.btn__arrow {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  transition: transform var(--dur-base) var(--ease-out);
}

[dir="rtl"] .btn__arrow[data-dir="right"] {
  transform: scaleX(-1);
}
[dir="rtl"] .btn__arrow[data-dir="left"] {
  transform: scaleX(-1);
}
[dir="rtl"] .btn:hover .btn__arrow {
  transform: scaleX(-1) translateX(6px);
}

/* ICON-ONLY */
.btn--icon {
  padding: 12px;
  width: 44px;
  height: 44px;
  justify-content: center;
}