/**
 * TubeRaker — Stylometric sub-app page styles
 * ---------------------------------------------------------------------------
 * Loaded LAST (after css/modules/stylometric.css, before the shared
 * header-embed.css) on all 4 stylometric templates. It only ADDS new wrapper
 * classes (prefix .pages-sty-) and lightly augments existing hooks by id/class
 * so that css/modules/stylometric.js keeps working verbatim. Nothing here
 * renames or removes an existing hook.
 *
 * Rules of the house: rem only (the viewport meta is the sole px exception),
 * token-only colours via var(--...) from variables.css so both light and dark
 * themes flip correctly, mobile-first from 22.5rem, and every interactive
 * control gets a >= 2.75rem touch target. The module's existing sheet uses
 * desktop-first max-width queries that already collapse grids to one column on
 * small screens; this file supplies the extra hero/skeleton/sticky/table-scroll
 * behaviour and the touch-target + focus polish those sheets lack.
 * ------------------------------------------------------------------------- */

/* ===== Generic helpers ================================================== */

/* Toggled by js/pages/stylometric.js (e.g. compare picker vs. results). */
.pages-sty-hidden {
  display: none !important;
}

/* Horizontal scroll container so wide tables scroll instead of forcing the
   whole body to scroll sideways at 22.5rem. */
.pages-sty-table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* ===== Focus visibility (both themes) =================================== */
.btn:focus-visible,
.filter-btn:focus-visible,
.dropdown-item:focus-visible,
.breadcrumb-link:focus-visible,
.fingerprint-card:focus-visible,
.match-card:focus-visible,
.similarity-range:focus-visible,
.pages-sty-secondary-link:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

/* ===== Touch targets ==================================================== */
/* Chips, dropdown items and the analyze/secondary buttons must clear the
   2.75rem minimum on touch screens. */
.filter-btn {
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.dropdown-item {
  min-height: 2.75rem;
  display: flex;
  align-items: center;
}

/* ===== Range slider (themed, touch-friendly, both themes) ============== */
.similarity-range {
  -webkit-appearance: none;
  appearance: none;
  height: 0.375rem;
  min-height: 2.75rem; /* generous hit area; visual track stays thin below */
  background: transparent;
  cursor: pointer;
}

.similarity-range::-webkit-slider-runnable-track {
  height: 0.375rem;
  border-radius: var(--radius-full);
  background: var(--bg-tertiary);
}

.similarity-range::-moz-range-track {
  height: 0.375rem;
  border-radius: var(--radius-full);
  background: var(--bg-tertiary);
}

.similarity-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 1.5rem;
  height: 1.5rem;
  margin-top: -0.5625rem; /* centre the 1.5rem thumb on the 0.375rem track */
  border-radius: var(--radius-full);
  background: var(--color-brand-primary);
  border: 0.125rem solid var(--bg-primary);
  box-shadow: var(--shadow-sm);
  transition: background var(--transition-fast);
}

.similarity-range::-moz-range-thumb {
  width: 1.5rem;
  height: 1.5rem;
  border-radius: var(--radius-full);
  background: var(--color-brand-primary);
  border: 0.125rem solid var(--bg-primary);
  box-shadow: var(--shadow-sm);
}

.similarity-range:hover::-webkit-slider-thumb {
  background: var(--color-brand-primary-hover);
}

/* ===== Skeleton / loading utilities ==================================== */
.pages-sty-sk {
  position: relative;
  overflow: hidden;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
}

.pages-sty-sk::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--bg-tertiary) 50%,
    transparent 100%
  );
  animation: pages-sty-shimmer 1200ms ease-in-out infinite;
}

.pages-sty-sk-line {
  display: inline-block;
  width: 6rem;
  max-width: 100%;
  height: 1.25rem;
  vertical-align: middle;
}

@keyframes pages-sty-shimmer {
  100% {
    transform: translateX(100%);
  }
}

/* ===== Error state (mirrors .empty-state layout) ======================= */
.pages-sty-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-2xl) var(--spacing-lg);
  text-align: center;
  grid-column: 1 / -1;
}

.pages-sty-error i {
  font-size: var(--font-size-3xl);
  color: var(--color-warning);
  margin-bottom: var(--spacing-sm);
}

/* ===== INDEX — hero analyze row ======================================== */
/* Full-width focal analyze card; input + button share a row on wider screens
   and stack below. Secondary "compare" link sits under the primary action. */
.pages-sty-hero .card-body {
  padding: var(--spacing-xl);
}

.pages-sty-analyze-row {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.pages-sty-analyze-actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  align-items: stretch;
}

.pages-sty-analyze-actions .btn {
  min-height: 2.75rem;
  justify-content: center;
}

/* Secondary text link -> compare picker (also reused on fingerprint page). */
.pages-sty-secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  min-height: 2.75rem;
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-brand-primary);
  text-decoration: none;
  border-radius: var(--radius-lg);
  background: transparent;
  border: 0.0625rem solid transparent;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.pages-sty-secondary-link:hover {
  background: var(--bg-hover);
  color: var(--color-brand-primary-hover);
}

@media (min-width: 48rem) {
  .pages-sty-analyze-row {
    flex-direction: row;
    align-items: flex-end;
  }

  .pages-sty-analyze-row .form-group {
    flex: 1;
    margin-bottom: 0;
  }

  .pages-sty-analyze-actions {
    flex-direction: row;
    align-items: center;
  }
}

/* ===== MATCHES — sticky filter bar ==================================== */
/* Keep filters in view while scanning results on larger screens; at mobile
   width it scrolls normally so it never eats the small viewport. */
@media (min-width: 48rem) {
  .pages-sty-sticky-filter {
    position: sticky;
    top: 3.75rem; /* sits below the fixed shared header */
    z-index: var(--z-sticky);
    background: var(--bg-primary);
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
  }
}

/* ===== MATCHES — responsive target thumbnail ========================== */
#target-thumbnail {
  width: 100%;
  height: auto;
  max-width: 20rem;
  border-radius: var(--radius-lg);
}

/* ===== COMPARE — picker / setup card ================================== */
.pages-sty-compare-setup {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.pages-sty-compare-fields {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

@media (min-width: 48rem) {
  .pages-sty-compare-fields {
    grid-template-columns: 1fr 1fr;
  }
}

.pages-sty-compare-setup .btn {
  min-height: 2.75rem;
  align-self: flex-start;
  justify-content: center;
}

/* ===== Micro-interactions (guarded by reduced-motion below) =========== */
.stat-card,
.metric-card,
.breakdown-card,
.fingerprint-card,
.match-card {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card-interactive:hover,
.stat-card:hover,
.metric-card:hover,
.breakdown-card:hover {
  transform: translateY(-0.125rem);
  box-shadow: var(--shadow-lg);
}

/* ===== Reduced-motion guard =========================================== */
@media (prefers-reduced-motion: reduce) {
  .pages-sty-sk::after {
    animation: none;
  }

  .stat-card,
  .metric-card,
  .breakdown-card,
  .fingerprint-card,
  .match-card,
  .card-interactive {
    transition: none;
  }

  .card-interactive:hover,
  .stat-card:hover,
  .metric-card:hover,
  .breakdown-card:hover {
    transform: none;
  }
}