/* ============================================================
   LAMIM — UI SYSTEM LAYER
   Centralized interactive states for production quality.
   Loaded AFTER component CSS so it can consistently extend
   the shared .btn / .input / .card system with proper
   focus / hover / active / disabled / loading / empty / error states.
   ============================================================ */

/* ---------- FOCUS (accessibility) ---------- */
button:focus-visible,
.btn:focus-visible,
.btn-icon:focus-visible,
.btn-icon-sm:focus-visible,
.icon-btn:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible,
.settings-item:focus-visible {
  outline: 2px solid transparent;
  box-shadow: 0 0 0 3px rgba(167, 139, 250, 0.45);
}

.input:focus-visible,
select.input:focus-visible,
textarea:focus-visible {
  outline: none;
  border-color: var(--color-accent-primary);
  box-shadow: 0 0 0 3px rgba(167, 139, 250, 0.18);
}

/* ---------- DISABLED ---------- */
button:disabled,
.btn:disabled,
input:disabled,
select:disabled,
textarea:disabled,
.fin-currency-btn:disabled,
[disabled] {
  opacity: 0.45 !important;
  cursor: not-allowed !important;
  pointer-events: none;
}

/* ---------- UNIFIED BUTTON MOTION (consistency) ---------- */
.btn-icon,
.btn-icon-sm,
.icon-btn,
.tab-btn,
.lang-toggle-pill button,
.fin-currency-btn,
.confirm-btn {
  transition: transform var(--transition-fast), background var(--transition-fast),
    box-shadow var(--transition-fast), border-color var(--transition-fast),
    color var(--transition-fast), filter var(--transition-fast);
}

.btn-icon:hover,
.btn-icon-sm:hover,
.icon-btn:hover,
.tab-btn:hover,
.lang-toggle-pill button:hover,
.confirm-btn:hover {
  filter: brightness(1.12);
}

.btn-icon:active,
.btn-icon-sm:active,
.icon-btn:active,
.tab-btn:active,
.lang-toggle-pill button:active,
.fin-currency-btn:active,
.confirm-btn:active {
  transform: scale(0.96);
}

/* ---------- FIN-CURRENCY-BTN STATES (was missing) ---------- */
.fin-currency-btn { background: transparent; }
.fin-currency-btn:hover { background: var(--color-glass-hover); color: var(--color-text-secondary); }
.fin-currency-btn.active:hover { background: #059669; color: #fff; }
.fin-currency-btn:focus-visible { box-shadow: 0 0 0 3px rgba(167, 139, 250, 0.4); }
.fin-currency-btn.active {
  background: #059669;
  color: #fff;
  box-shadow: 0 4px 12px rgba(5, 150, 105, 0.25);
}

/* ---------- EMPTY STATES (polished, consistent) ---------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: var(--space-3);
}
.empty-state .empty-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 84px; height: 84px;
  border-radius: var(--radius-full);
  background: var(--color-glass);
  border: 1px solid var(--color-border);
  font-size: 2.25rem;
  opacity: 0.9;
  margin-bottom: var(--space-2);
}
.empty-state h3 {
  font-size: var(--text-lg);
  font-weight: var(--fw-semibold);
  color: var(--color-text-secondary);
  margin: 0;
}
.empty-state p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: 0;
  max-width: 320px;
  line-height: 1.6;
}
.empty-state .btn { margin-top: var(--space-4); }

/* ---------- REDUCED MOTION (accessibility / health) ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- SKIP LINK (keyboard users) ---------- */
.skip-link {
  position: fixed;
  top: -120px;
  left: 12px;
  z-index: var(--z-toast, 30000);
  background: var(--color-accent-primary);
  color: #fff;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-weight: var(--fw-semibold);
  text-decoration: none;
  box-shadow: var(--shadow-lg);
  transition: top var(--transition-fast);
}
.skip-link:focus { top: 12px; outline: none; }

/* Range inputs lose their default focus ring with appearance:none — restore a visible one */
input[type="range"]:focus-visible {
  outline: 2px solid var(--color-accent-primary);
  outline-offset: 3px;
}

/* ---------- FORM SUBMIT LOADING STATE ---------- */
.btn-loading {
  opacity: 0.7;
  pointer-events: none;
  cursor: progress;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}