/* ============================================
   GrapoliX Buttons Component
   DESIGN.md — UI Components — BUTTON VARIANTS
   ============================================ */

/* ── Base Button Reset ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  text-decoration: none;
  border: none;
  border-radius: 3px;
  cursor: pointer;
  transition: opacity 200ms ease, transform 200ms ease;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

/* ── Primary — Gold ── */
.btn--primary {
  background: var(--gold);
  color: var(--bg);
  border: 1px solid var(--gold);
}

.btn--primary:hover {
  opacity: 0.85;
  color: var(--bg);
}

/* ── Secondary — Outlined Gold ── */
.btn--secondary {
  background: transparent;
  color: var(--gold);
  border: 1px solid var(--gold);
}

.btn--secondary:hover {
  background: rgba(232, 213, 163, 0.08);
  color: var(--gold);
}

/* ── Danger — Garnet ── */
.btn--danger {
  background: var(--garnet);
  color: var(--text);
  border: 1px solid var(--garnet);
}

.btn--danger:hover {
  opacity: 0.85;
  color: var(--text);
}

/* ── Ghost — White Outlined ── */
.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn--ghost:hover {
  border-color: var(--text);
  color: var(--text);
}

/* ── Silver — Muted ── */
.btn--silver {
  background: transparent;
  color: var(--silver);
  border: 1px solid var(--silver);
}

.btn--silver:hover {
  opacity: 0.75;
  color: var(--silver);
}

/* ── Size Variants ── */
.btn--sm {
  padding: 10px 20px;
  font-size: 10px;
  letter-spacing: 2px;
}

.btn--lg {
  padding: 18px 40px;
  font-size: 12px;
  letter-spacing: 4px;
}

/* ── Icon Button ── */
.btn--icon {
  padding: 12px;
  width: 44px;
  height: 44px;
  border-radius: 3px;
}

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

/* ── Loading State ── */
.btn--loading {
  pointer-events: none;
  opacity: 0.7;
}

.btn--loading::after {
  content: '';
  width: 14px;
  height: 14px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: btn-spin 600ms linear infinite;
  margin-left: 8px;
}

@keyframes btn-spin {
  to { transform: rotate(360deg); }
}