/* ============================================================
   buttons.css — Tutti i pulsanti e varianti
   ============================================================ */

/* ── Base ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 6px 14px;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  font-weight: var(--fw-medium);
  line-height: 1.4;
  white-space: nowrap;
  cursor: pointer;
  border: 0.5px solid transparent;
  text-decoration: none;
  transition:
    background var(--transition-base),
    border-color var(--transition-base),
    color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-fast);
  user-select: none;
  vertical-align: middle;
}

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

.btn:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

.btn i {
  font-size: 13px;
  flex-shrink: 0;
}

.btn:disabled,
.btn.disabled {
  opacity: .45;
  cursor: not-allowed;
  pointer-events: none;
}

/* ── Varianti colore ── */

/* Primary */
.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #fff;
}

/* Secondary / outline */
.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-surface-2);
  border-color: var(--border-color);
  color: var(--text-primary);
}

/* Ghost (solo testo + hover bg) */
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}

.btn-ghost:hover {
  background: var(--bg-surface-2);
  color: var(--text-primary);
}

/* Danger */
.btn-danger {
  background: var(--color-danger);
  color: #fff;
  border-color: var(--color-danger);
}

.btn-danger:hover {
  background: #b91c1c;
  border-color: #b91c1c;
  color: #fff;
}

/* Danger outline */
.btn-danger-outline {
  background: var(--bg-surface);
  color: var(--color-danger);
  border-color: var(--color-danger-border);
}

.btn-danger-outline:hover {
  background: var(--color-danger-bg);
}

/* Success */
.btn-success {
  background: var(--color-success);
  color: #fff;
  border-color: var(--color-success);
}

.btn-success:hover {
  background: #15803d;
  border-color: #15803d;
  color: #fff;
}

/* Navy (usato nell'header ticket) */
.btn-navy-ghost {
  background: rgba(255,255,255,.1);
  color: #fff;
  border-color: rgba(255,255,255,.2);
}

.btn-navy-ghost:hover {
  background: rgba(255,255,255,.18);
  color: #fff;
}

/* ── Dimensioni ── */

.btn-xs {
  padding: 3px 8px;
  font-size: var(--fs-xs);
  border-radius: var(--radius-sm);
}

.btn-xs i {
  font-size: 11px;
}

.btn-sm {
  padding: 4px 10px;
  font-size: var(--fs-sm);
}

.btn-sm i {
  font-size: 12px;
}

.btn-lg {
  padding: 9px 20px;
  font-size: var(--fs-md);
}

.btn-lg i {
  font-size: 15px;
}

/* ── Icon-only (quadrato) ── */
.btn-icon {
  width: 32px;
  height: 32px;
  padding: 0;
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.btn-icon.btn-sm {
  width: 26px;
  height: 26px;
}

.btn-icon.btn-lg {
  width: 38px;
  height: 38px;
}

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

/* ── Loading state ── */
.btn.loading {
  pointer-events: none;
  opacity: .75;
}

.btn.loading::before {
  content: '';
  width: 12px;
  height: 12px;
  border: 1.5px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: btn-spin .6s linear infinite;
  flex-shrink: 0;
}

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

/* ── Gruppo pulsanti ── */
.btn-group {
  display: inline-flex;
  align-items: center;
}

.btn-group .btn {
  border-radius: 0;
}

.btn-group .btn:first-child {
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.btn-group .btn:last-child {
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.btn-group .btn + .btn {
  margin-left: -0.5px;
}

/* ── Dropdown trigger ── */
.btn-dropdown::after {
  content: '';
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  margin-left: var(--space-1);
  flex-shrink: 0;
  opacity: .6;
}