/**
 * Input area, controls, intent navigation, guardrails indicator
 * Split from components.css — Phase 3.2
 */

/* ========================================
   INPUT AREA - Premium Style
   ======================================== */

.input-area {
  position: relative;
}

.input-area__textarea {
  width: 100%;
  min-height: 160px;
  padding: var(--space-5);
  font-size: var(--font-size-md);
  line-height: var(--line-height-relaxed);
  border: 1.5px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  color: var(--color-text);
  transition: all var(--transition-base);
  resize: vertical;
  box-shadow: var(--shadow-inset);
}

.input-area__textarea::placeholder {
  color: var(--color-text-muted);
}

.input-area__textarea:hover:not(:focus):not(:disabled) {
  border-color: rgba(0, 0, 0, 0.12);
}

.input-area__textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1), var(--shadow-inset-focus);
}

.input-area__textarea:disabled {
  background: var(--color-surface-secondary);
  cursor: not-allowed;
  opacity: 0.7;
}

/* Drop Overlay - Premium Animation */
.input-area__overlay {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  background: rgba(37, 99, 235, 0.05);
  border: 2px dashed var(--color-primary);
  border-radius: var(--radius-xl);
  pointer-events: none;
  z-index: 10;
  backdrop-filter: blur(4px);
}

.input-area.is-dragover .input-area__overlay {
  display: flex;
  animation: dropPulse 1s ease infinite;
}

@keyframes dropPulse {
  0%, 100% { background: rgba(37, 99, 235, 0.05); }
  50% { background: rgba(37, 99, 235, 0.1); }
}

.input-area__overlay-icon {
  font-size: 40px;
  animation: dropBounce 0.6s ease infinite;
}

@keyframes dropBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.input-area__overlay-text {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
}

/* ========================================
   INPUT CONTROLS
   ======================================== */

.input-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-4);
}

.input-controls__left,
.input-controls__right {
  display: flex;
  gap: var(--space-2);
}

/* ========================================
   INTENT NAVIGATION - Premium Style
   ======================================== */

.intent-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.intent-category {
  display: flex;
  flex-direction: column;
}

.intent-category__btn {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-align: left;
  transition: all var(--transition-base);
  position: relative;
}

.intent-category__btn::after {
  content: '›';
  position: absolute;
  right: var(--space-3);
  font-size: 16px;
  color: var(--color-text-muted);
  opacity: 0;
  transform: translateX(-4px);
  transition: all var(--transition-base);
}

.intent-category__btn:hover {
  background: rgba(0, 0, 0, 0.03);
  transform: translateX(2px);
}

.intent-category__btn:hover::after {
  opacity: 1;
  transform: translateX(0);
}

.intent-category__btn.is-active {
  background: var(--gradient-primary);
  color: white;
  border-color: transparent;
  box-shadow: var(--shadow-primary);
}

.intent-category__btn.is-active::after {
  content: '✓';
  opacity: 1;
  transform: translateX(0);
  color: white;
}

.intent-category__btn.is-active:hover {
  transform: translateX(0);
}

.intent-category__icon {
  font-size: var(--font-size-md);
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.1));
}

.intent-category__btn.is-active .intent-category__icon {
  filter: drop-shadow(0 1px 3px rgba(0,0,0,0.2));
}

.intent-category__label {
  flex: 1;
}

.intent-category__items {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: 0 0 0 var(--space-4);
  margin-top: 0;
  margin-left: var(--space-4);
  border-left: 2px solid rgba(37, 99, 235, 0.2);
  
  /* V3-style slide animation */
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 250ms ease-out, opacity 200ms ease-out, padding 250ms ease-out, margin 250ms ease-out;
}

.intent-category__items.is-open {
  max-height: 400px; /* Accommodate up to ~8 items */
  opacity: 1;
  padding: var(--space-2) 0 var(--space-2) var(--space-4);
  margin-top: var(--space-1);
}

/* Guidance Glow - cycles through sub-tools to guide selection */
.intent-btn.xf-glow {
  background: rgba(37, 99, 235, 0.08);
  border-color: rgba(37, 99, 235, 0.3);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.15);
  transition: all 300ms ease;
}

@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1); }
  50% { box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2); }
}

.intent-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-2) var(--space-3);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  text-align: left;
  transition: all var(--transition-base);
}

.intent-btn:hover {
  background: rgba(37, 99, 235, 0.06);
  color: var(--color-primary);
  transform: translateX(4px);
}

.intent-btn.is-selected {
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
  border-color: rgba(37, 99, 235, 0.2);
}

.intent-btn.is-disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.intent-btn.is-disabled:hover {
  background: transparent;
  color: var(--color-text-secondary);
  transform: none;
}

.intent-btn__icon {
  font-size: var(--font-size-base);
  filter: grayscale(20%);
  transition: filter var(--transition-base);
}

.intent-btn:hover .intent-btn__icon,
.intent-btn.is-selected .intent-btn__icon {
  filter: grayscale(0%);
}

/* ========================================
   GUARDRAILS INDICATOR
   ======================================== */

.guardrails {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-info-light);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-info);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.guardrails:hover {
  background: rgba(59, 130, 246, 0.12);
}

.guardrails__icon {
  font-size: var(--font-size-base);
}

.guardrails__count {
  font-weight: var(--font-weight-bold);
}

.guardrails__label {
  font-weight: var(--font-weight-medium);
  opacity: 0.8;
}