/* ==========================================================================
   Reusable Components
   ========================================================================== */

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.55rem 1.15rem;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.4;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
}
.btn svg { width: 16px; height: 16px; flex-shrink: 0; }

.btn--primary {
  background: var(--color-primary);
  color: #fff;
}
.btn--primary:hover {
  background: var(--color-primary-dark);
  color: #fff;
  box-shadow: var(--shadow-md);
}

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

.btn--ghost {
  background: transparent;
  color: var(--color-text-secondary);
  padding: 0.45rem 0.75rem;
}
.btn--ghost:hover {
  background: var(--color-bg-muted);
  color: var(--color-text);
}

.btn--sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.8125rem;
}
.btn--sm svg { width: 14px; height: 14px; }

.btn--icon {
  padding: 0.5rem;
  border-radius: var(--radius-md);
}

/* ---------- Badges ---------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  padding: 0.2em 0.65em;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.4;
  border-radius: var(--radius-full);
  letter-spacing: 0.01em;
  white-space: nowrap;
}

/* Language badges */
.badge--python     { background: var(--lang-python-bg);     color: var(--lang-python-fg); }
.badge--javascript { background: var(--lang-javascript-bg); color: var(--lang-javascript-fg); }
.badge--go         { background: var(--lang-go-bg);         color: var(--lang-go-fg); }
.badge--rust       { background: var(--lang-rust-bg);       color: var(--lang-rust-fg); }
.badge--java       { background: var(--lang-java-bg);       color: var(--lang-java-fg); }

/* Distribution badges */
.badge--pypi { background: var(--dist-pypi-bg); color: var(--dist-pypi-fg); }
.badge--npm  { background: var(--dist-npm-bg);  color: var(--dist-npm-fg); }

/* Version badge */
.badge--version {
  background: var(--color-bg-muted);
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.7rem;
}

.badge--latest {
  background: var(--color-success);
  color: #fff;
  font-size: 0.675rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Symbol-kind badges */
.badge--module    { background: var(--kind-module-bg);    color: var(--kind-module-fg); }
.badge--class     { background: var(--kind-class-bg);     color: var(--kind-class-fg); }
.badge--function  { background: var(--kind-function-bg);  color: var(--kind-function-fg); }
.badge--method    { background: var(--kind-method-bg);    color: var(--kind-method-fg); }
.badge--property  { background: var(--kind-property-bg);  color: var(--kind-property-fg); }
.badge--constant  { background: var(--kind-constant-bg);  color: var(--kind-constant-fg); }
.badge--attribute { background: var(--kind-attribute-bg); color: var(--kind-attribute-fg); }

/* ---------- Search input ---------- */

.search-box {
  position: relative;
  width: 100%;
  max-width: 540px;
}
.search-box__icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--color-text-muted);
  pointer-events: none;
}
.search-box__input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.75rem;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  outline: none;
  transition: all var(--transition-fast);
}
.search-box__input::placeholder {
  color: var(--color-text-muted);
}
.search-box__input:focus {
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(234, 88, 12, 0.1);
}
.search-box__clear {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  display: none;
  align-items: center;
  justify-content: center;
  border: none;
  background: none;
  color: var(--color-text-muted);
  cursor: pointer;
  border-radius: var(--radius-sm);
}
.search-box__clear:hover { color: var(--color-text); background: var(--color-bg-muted); }
.search-box__input:not(:placeholder-shown) ~ .search-box__clear { display: flex; }

/* ---------- Filter chips ---------- */

.chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  padding: 0.375rem 0.85rem;
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}
.chip:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary);
}
.chip.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}
.chip__count {
  font-size: 0.7rem;
  opacity: 0.75;
}

/* ---------- Modal ---------- */

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}
.modal-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.modal {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: calc(var(--z-modal) + 1);
  width: 100%;
  max-width: 720px;
  background: var(--color-bg);
  box-shadow: var(--shadow-xl);
  transform: translateX(100%);
  transition: transform var(--transition-slow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.modal.is-open {
  transform: translateX(0);
}
.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}
.modal__title {
  font-size: 1.125rem;
  font-weight: 600;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.modal__close {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: none;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.modal__close:hover { background: var(--color-bg-muted); color: var(--color-text); }
.modal__close svg { width: 20px; height: 20px; }

.modal__body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-xl);
}

/* ---------- Spinner ---------- */

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  padding: var(--space-4xl) 0;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* ---------- Empty state ---------- */

.empty-state {
  text-align: center;
  padding: var(--space-4xl) var(--space-xl);
}
.empty-state__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-lg);
  color: var(--color-text-muted);
  opacity: 0.5;
}
.empty-state__title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}
.empty-state__text {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* ---------- Tooltip (title attr style) ---------- */

[data-tooltip] {
  position: relative;
}
[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  padding: 0.3em 0.65em;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-inverse);
  background: var(--color-text);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
}
[data-tooltip]:hover::after {
  opacity: 1;
  visibility: visible;
}

/* ---------- Select ---------- */

.select {
  appearance: none;
  padding: 0.4rem 2rem 0.4rem 0.75rem;
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") no-repeat right 0.6rem center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.select:hover { border-color: var(--color-primary-light); }
.select:focus { outline: none; border-color: var(--color-primary-light); box-shadow: 0 0 0 3px rgba(234, 88, 12, 0.1); }