/* =============================================================================
   Components — reusable UI elements
   ============================================================================= */

/* ── Buttons ─────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4);
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: var(--font-size-sm);
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color var(--transition), border-color var(--transition), color var(--transition);
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

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

.btn-primary:hover {
  filter: brightness(1.15);
}

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

.btn-secondary:hover {
  background-color: var(--color-border);
}

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

.btn-danger:hover {
  filter: brightness(1.15);
}

/* Icon-only button */
.btn-icon {
  padding: var(--sp-2);
  aspect-ratio: 1;
  justify-content: center;
}

/* ── Toast notifications ─────────────────────────────────────────────────── */

#toast-container {
  position: fixed;
  bottom: var(--sp-6);
  right: var(--sp-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  pointer-events: none;
}

@keyframes toast-in {
  from { opacity: 0; transform: translateX(110%); }
  to   { opacity: 1; transform: translateX(0);    }
}

@keyframes toast-out {
  from { opacity: 1; transform: translateX(0);    }
  to   { opacity: 0; transform: translateX(110%); }
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  min-width: 260px;
  max-width: 420px;
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius);
  border-left: 4px solid currentColor;
  background-color: var(--color-surface-2);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  box-shadow: 0 4px 16px rgba(0, 0, 0, .5);
  pointer-events: all;
  animation: toast-in 220ms ease forwards;
}

.toast--out {
  animation: toast-out 220ms ease forwards;
}

.toast--info    { color: var(--color-info);    }
.toast--success { color: var(--color-success); }
.toast--warning { color: var(--color-warning); }
.toast--error   { color: var(--color-danger);  }

.toast__message {
  flex: 1;
  color: var(--color-text);
  word-break: break-word;
}

.toast__close {
  flex-shrink: 0;
  background: none;
  border: none;
  padding: 0;
  line-height: 1;
  font-size: 18px;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color var(--transition);
}

.toast__close:hover {
  color: var(--color-text);
}

/* ── Modal dialog ────────────────────────────────────────────────────────── */

@keyframes modal-in {
  from { opacity: 0; transform: translateY(-16px); }
  to   { opacity: 1; transform: translateY(0);     }
}

@keyframes modal-out {
  from { opacity: 1; }
  to   { opacity: 0; }
}

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(0, 0, 0, .65);
  animation: modal-in 200ms ease forwards;
}

.modal-overlay.modal--out {
  animation: modal-out 160ms ease forwards;
}

.modal-dialog {
  display: flex;
  flex-direction: column;
  min-width: 360px;
  max-width: 640px;
  max-height: 85vh;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 40px rgba(0, 0, 0, .7);
  overflow: hidden;
}

.modal-header {
  padding: var(--sp-4) var(--sp-6);
  border-bottom: 1px solid var(--color-border);
}

.modal-title {
  margin: 0;
  font-size: var(--font-size-lg);
  color: var(--color-text);
}

.modal-body {
  flex: 1;
  padding: var(--sp-6);
  overflow-y: auto;
  color: var(--color-text);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--sp-3);
  padding: var(--sp-4) var(--sp-6);
  border-top: 1px solid var(--color-border);
}