/* Components */

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--border-radius-full);
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
  user-select: none;
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.97);
}

.btn--primary {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 2px 8px rgba(232, 102, 61, 0.25);
}

.btn--primary:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 4px 16px rgba(232, 102, 61, 0.35);
}

.btn--secondary {
  background: var(--color-bg-alt);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn--secondary:hover {
  background: var(--color-bg);
  box-shadow: var(--shadow-sm);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-muted);
}

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

.btn--sm {
  font-size: var(--text-sm);
  padding: var(--space-1) var(--space-3);
}

.btn--lg {
  font-size: var(--text-lg);
  padding: var(--space-3) var(--space-7);
}

/* ──────────────────────────────────────
   The Wander Button — Hero Element
────────────────────────────────────── */

.wander-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  min-width: 200px;
  min-height: 64px;
  padding: var(--space-3) var(--space-7);
  background: var(--color-primary);
  color: white;
  border-radius: var(--border-radius-full);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 400;
  letter-spacing: 0.01em;
  cursor: pointer;
  user-select: none;
  box-shadow:
    0 4px 16px rgba(232, 102, 61, 0.3),
    0 2px 6px rgba(232, 102, 61, 0.2);
  transition:
    transform var(--transition-normal),
    box-shadow var(--transition-normal),
    background var(--transition-normal);
  animation: wander-breathe 3.5s ease-in-out infinite;
  will-change: transform;
}

.wander-btn:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow:
    0 8px 28px rgba(232, 102, 61, 0.4),
    0 4px 12px rgba(232, 102, 61, 0.25);
  background: var(--color-primary-hover);
  animation-play-state: paused;
}

.wander-btn:active {
  transform: scale(0.96);
  box-shadow:
    0 2px 8px rgba(232, 102, 61, 0.2);
  animation-play-state: paused;
}

.wander-btn.loading {
  pointer-events: none;
  animation: none;
}

.wander-btn__icon {
  font-size: 1.3em;
  line-height: 1;
}

.wander-btn__text {
  letter-spacing: 0.02em;
}

/* Toolbar-sized smaller wander button */
.wander-btn--toolbar {
  min-width: 140px;
  min-height: 44px;
  font-size: var(--text-base);
  padding: var(--space-2) var(--space-5);
  animation: wander-breathe 3.5s ease-in-out infinite;
}

.wander-btn--toolbar:hover {
  animation-play-state: paused;
}

@keyframes wander-breathe {
  0%, 100% {
    box-shadow:
      0 4px 16px rgba(232, 102, 61, 0.3),
      0 2px 6px rgba(232, 102, 61, 0.2);
    transform: scale(1);
  }
  50% {
    box-shadow:
      0 6px 22px rgba(232, 102, 61, 0.45),
      0 3px 10px rgba(232, 102, 61, 0.3);
    transform: scale(1.015);
  }
}

/* Loading dots animation */
.loading-dots {
  display: inline-flex;
  gap: 4px;
  align-items: center;
}

.loading-dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: white;
  animation: dot-bounce 1.2s infinite;
}

.loading-dots span:nth-child(2) { animation-delay: 0.2s; }
.loading-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes dot-bounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.5; }
  40% { transform: scale(1); opacity: 1; }
}

/* ──────────────────────────────────────
   Icon Buttons (action bar)
────────────────────────────────────── */

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--border-radius-full);
  cursor: pointer;
  transition:
    background var(--transition-fast),
    transform var(--transition-fast),
    color var(--transition-fast);
  color: var(--color-text-muted);
  position: relative;
}

.icon-btn:hover {
  background: var(--color-bg-alt);
  color: var(--color-text);
}

.icon-btn:active {
  transform: scale(0.92);
}

.icon-btn.active-like {
  color: var(--color-success);
  background: rgba(91, 154, 111, 0.1);
}

.icon-btn.active-dislike {
  color: var(--color-danger);
  background: rgba(196, 91, 74, 0.1);
}

.icon-btn.active-save {
  color: var(--color-warning);
  background: rgba(212, 168, 67, 0.1);
}

/* Tooltip */
.icon-btn[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-text);
  color: var(--color-bg);
  font-size: var(--text-xs);
  font-weight: 500;
  white-space: nowrap;
  padding: 4px 8px;
  border-radius: 6px;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.icon-btn[data-tooltip]:hover::after {
  opacity: 1;
}

/* ──────────────────────────────────────
   Chaos Slider
────────────────────────────────────── */

.chaos-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: var(--color-slider-track);
  outline: none;
  position: relative;
  cursor: pointer;
}

/* The filled portion uses a CSS trick with gradient via JS-set custom property */
.chaos-slider {
  background: linear-gradient(
    90deg,
    #4A90A4 0%,
    #E8663D calc(var(--slider-pct, 50) * 1%),
    var(--color-slider-track) calc(var(--slider-pct, 50) * 1%)
  );
}

.chaos-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: white;
  box-shadow: 0 2px 8px rgba(44, 36, 22, 0.2);
  border: 2px solid var(--color-border);
  cursor: grab;
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.chaos-slider::-webkit-slider-thumb:hover {
  box-shadow: 0 3px 12px rgba(44, 36, 22, 0.3);
  transform: scale(1.1);
}

.chaos-slider::-webkit-slider-thumb:active {
  cursor: grabbing;
  transform: scale(1.15);
}

.chaos-slider::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: white;
  box-shadow: 0 2px 8px rgba(44, 36, 22, 0.2);
  border: 2px solid var(--color-border);
  cursor: grab;
}

/* ──────────────────────────────────────
   Tag Pills
────────────────────────────────────── */

.tag-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 5px var(--space-3);
  border-radius: var(--border-radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast),
    transform var(--transition-fast);
  user-select: none;
  border: 1.5px solid transparent;
}

.tag-pill:hover {
  transform: scale(1.04);
}

.tag-pill:active {
  transform: scale(0.97);
}

/* Inactive */
.tag-pill--inactive {
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
  border-color: transparent;
}

.tag-pill--inactive:hover {
  border-color: var(--color-border);
  background: var(--color-bg-alt);
}

/* Active */
.tag-pill--active {
  background: var(--color-primary);
  color: white;
  border-color: transparent;
}

/* Must Include (promoted) */
.tag-pill--promoted {
  background: var(--color-success);
  color: white;
  border-color: transparent;
}

/* Excluded */
.tag-pill--excluded {
  background: var(--color-danger);
  color: white;
  border-color: transparent;
  text-decoration: line-through;
  text-decoration-color: rgba(255,255,255,0.6);
}

/* Dimension-tinted inactive pills */
.tag-pill--topic.tag-pill--inactive     { background: var(--dim-topic-bg); color: var(--dim-topic); }
.tag-pill--audience.tag-pill--inactive  { background: var(--dim-audience-bg); color: var(--dim-audience); }
.tag-pill--format.tag-pill--inactive    { background: var(--dim-format-bg); color: var(--dim-format); }
.tag-pill--tone.tag-pill--inactive      { background: var(--dim-tone-bg); color: var(--dim-tone); }
.tag-pill--pedagogy.tag-pill--inactive  { background: var(--dim-pedagogy-bg); color: var(--dim-pedagogy); }
.tag-pill--safety.tag-pill--inactive    { background: var(--dim-safety-bg); color: var(--dim-safety); }

.tag-pill__icon {
  font-size: 0.75em;
  opacity: 0.8;
}

/* ──────────────────────────────────────
   Onboarding Option Buttons
────────────────────────────────────── */

.option-btn {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--border-radius);
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
  text-align: left;
  font-size: var(--text-base);
  color: var(--color-text);
  transition:
    border-color var(--transition-fast),
    background var(--transition-fast),
    box-shadow var(--transition-fast);
  width: 100%;
}

.option-btn:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(232, 102, 61, 0.1);
}

.option-btn.selected {
  border-color: var(--color-primary);
  background: rgba(232, 102, 61, 0.06);
  box-shadow: 0 0 0 3px rgba(232, 102, 61, 0.12);
}

.option-btn__icon {
  font-size: 1.4em;
  flex-shrink: 0;
}

.option-btn__text {
  flex: 1;
}

.option-btn__check {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.option-btn.selected .option-btn__check {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

/* Grid options (compact) */
.option-btn--compact {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-1);
}

/* ──────────────────────────────────────
   Progress dots
────────────────────────────────────── */

.progress-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-border);
  transition: background var(--transition-normal), transform var(--transition-normal);
}

.progress-dot.active {
  background: var(--color-primary);
  transform: scale(1.2);
}

.progress-dot.completed {
  background: var(--color-primary);
  opacity: 0.5;
}

/* ──────────────────────────────────────
   Search Input
────────────────────────────────────── */

.search-input {
  width: 100%;
  padding: var(--space-2) var(--space-4) var(--space-2) 36px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--border-radius-full);
  background: var(--color-surface);
  font-size: var(--text-base);
  color: var(--color-text);
  transition: border-color var(--transition-fast);
}

.search-input:focus {
  border-color: var(--color-accent);
  outline: none;
}

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

.search-wrap {
  position: relative;
}

.search-wrap .search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
}

/* ──────────────────────────────────────
   Logo
────────────────────────────────────── */

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  color: var(--color-text);
}

.logo__icon {
  width: 32px;
  height: 32px;
}

/* ──────────────────────────────────────
   Text input
────────────────────────────────────── */

.text-input {
  width: 100%;
  padding: var(--space-2) var(--space-4);
  border: 1.5px solid var(--color-border);
  border-radius: var(--border-radius);
  background: var(--color-surface);
  font-size: var(--text-base);
  color: var(--color-text);
  transition: border-color var(--transition-fast);
}

.text-input:focus {
  border-color: var(--color-accent);
  outline: none;
}

/* ──────────────────────────────────────
   Divider
────────────────────────────────────── */

.divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-3) 0;
}

/* ──────────────────────────────────────
   Empty State
────────────────────────────────────── */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  text-align: center;
  gap: var(--space-3);
  color: var(--color-text-muted);
}

.empty-state__icon {
  font-size: 3rem;
  opacity: 0.5;
}

.empty-state__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  color: var(--color-text);
}

/* ──────────────────────────────────────
   Domain block list
────────────────────────────────────── */

.domain-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
}

.domain-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg-alt);
  border-radius: var(--border-radius-sm);
  font-size: var(--text-sm);
}

.domain-item__remove {
  color: var(--color-danger);
  cursor: pointer;
  font-size: var(--text-sm);
  padding: 2px 6px;
  border-radius: 4px;
}

.domain-item__remove:hover {
  background: rgba(196, 91, 74, 0.1);
}

/* ──────────────────────────────────────
   Navbar button
────────────────────────────────────── */

.nav-btn {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--border-radius);
  font-size: var(--text-base);
  color: var(--color-text);
  cursor: pointer;
  transition: background var(--transition-fast);
  width: 100%;
  text-align: left;
}

.nav-btn:hover {
  background: var(--color-bg-alt);
}

.nav-btn.active {
  background: var(--color-bg-alt);
  font-weight: 600;
  color: var(--color-primary);
}

.nav-btn__icon {
  width: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
}

/* ──────────────────────────────────────
   Background particles (landing page)
────────────────────────────────────── */

.landing-particles {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.landing-particles .particle {
  position: absolute;
  border-radius: 50%;
  opacity: 0.06;
  background: var(--color-primary);
  animation: float-up linear infinite;
}

@keyframes float-up {
  0%   { transform: translateY(100vh) scale(0.8); opacity: 0; }
  10%  { opacity: 0.06; }
  90%  { opacity: 0.06; }
  100% { transform: translateY(-10vh) scale(1.1); opacity: 0; }
}