/* ─────────────────────────────────────────────────────────────────
   IELTS Writing — Practice tools grid.

   Lives at the bottom of the Writing index page (#subject/ielts/writing)
   below the lesson categories. Two rows × three columns of "tool cards":
   row 1 = AI-graded tools (essay grader, exam simulator, paragraph
   drills), row 2 = no-AI tools (sentence upgrade, reverse engineering,
   prompt generator).

   AI vs no-AI distinction is carried by:
     - .is-ai          → honey-tinted left border + glow on hover
     - .wr-tool-ai-badge (top-right "AI" chip with sparkle icon)
     - .is-premium      → exam simulator only (richer treatment)
   The non-AI cards lean on their per-tool accent color for character.

   Cards render on the dark IELTS shell so they use the IELTS palette
   (--ielts-card, --ielts-ink, etc.). The lesson categories above use
   the cream-paper palette — the visual switch from cream to dark glass
   is intentional and signals "lessons above, tools below".
   ───────────────────────────────────────────────────────────── */

.wr-practice-section {
  margin-top: 3.5rem;
  position: relative;
}

/* Subtle hairline separator between lessons (paper) and practice (dark glass). */
.wr-practice-section::before {
  content: '';
  display: block;
  height: 1px;
  margin: 0 0 2.2rem;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--ielts-line, rgba(242, 230, 204, .14)) 22%,
    var(--ielts-line, rgba(242, 230, 204, .14)) 78%,
    transparent 100%
  );
}

.wr-practice-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 1.6rem;
  flex-wrap: wrap;
}

.wr-practice-title {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 2rem;
  font-weight: 500;
  letter-spacing: -.015em;
  color: var(--ielts-ink, #F2E6CC);
  margin: 0;
  line-height: 1.1;
}

.wr-practice-sub {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: .92rem;
  line-height: 1.5;
  color: var(--ielts-ink-soft, #B6A484);
  margin: .35rem 0 0;
  max-width: 46ch;
}

.wr-practice-legend {
  display: flex;
  gap: 1.1rem;
  align-items: center;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ielts-ink-mute, #7A6A52);
  flex-shrink: 0;
}
.wr-practice-legend-item {
  display: inline-flex;
  align-items: center;
  gap: .42rem;
}
.wr-practice-legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ielts-ink-mute, #7A6A52);
  flex-shrink: 0;
}
.wr-practice-legend-item.is-ai .wr-practice-legend-dot {
  background: var(--ielts-honey, #D9A268);
  box-shadow: 0 0 8px color-mix(in srgb, var(--ielts-honey, #D9A268) 65%, transparent);
}

/* ── Grid ───────────────────────────────────────────────────── */
.wr-practice-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.1rem;
}

/* ── Tool card ──────────────────────────────────────────────── */
.wr-tool-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: .7rem;
  text-align: left;
  padding: 1.5rem 1.5rem 1.35rem;
  min-height: 232px;
  background: linear-gradient(180deg,
    var(--ielts-card-lift, #3D2D1F) 0%,
    var(--ielts-card, #322519) 100%);
  border: 1px solid var(--ielts-line, rgba(242, 230, 204, .12));
  border-radius: 16px;
  color: var(--ielts-ink, #F2E6CC);
  cursor: pointer;
  font: inherit;
  overflow: hidden;
  isolation: isolate;
  text-decoration: none;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .03),
    0 12px 24px -16px rgba(0, 0, 0, .55);
  transition:
    transform .22s cubic-bezier(.2, .8, .2, 1),
    border-color .2s,
    box-shadow .22s;
}

/* AI-only signal: a single soft accent wash at the top-right. Subtle —
   just enough to warm the upper corner with the tool's color. Non-AI
   cards skip this entirely, so the wash itself becomes part of the
   AI/no-AI distinction (alongside the louder AI badge). */
.wr-tool-card.is-ai::before {
  content: '';
  position: absolute;
  top: -15%;
  right: -10%;
  width: 55%;
  height: 55%;
  background: radial-gradient(closest-side,
    color-mix(in srgb, var(--tool-accent, #D9A268) 20%, transparent) 0%,
    transparent 70%);
  pointer-events: none;
  z-index: 0;
  filter: blur(8px);
}

/* Bottom accent line — every card gets one in its tool's color. The
   only difference for AI is the wash above. */
.wr-tool-card::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--tool-accent, #D9A268);
  opacity: .7;
  transition: opacity .22s, height .22s;
}

/* Internal content stays above the wash. */
.wr-tool-card > * { position: relative; z-index: 1; }

.wr-tool-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--tool-accent, #D9A268) 35%, var(--ielts-line, rgba(242, 230, 204, .12)));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .04),
    0 18px 36px -14px rgba(0, 0, 0, .65);
}
.wr-tool-card:hover::after {
  opacity: 1;
  height: 3px;
}
.wr-tool-card:focus-visible {
  outline: none;
  border-color: var(--tool-accent, var(--ielts-honey, #D9A268));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .04),
    0 0 0 3px color-mix(in srgb, var(--tool-accent, #D9A268) 30%, transparent);
}

/* ── Exhausted state ────────────────────────────────────────────
   Daily/weekly limit hit. Card fades but stays clickable so the
   student can review past submissions. A small chip replaces the
   limit-chip with "View past sessions" copy. */
.wr-tool-card.is-exhausted {
  opacity: .55;
  filter: saturate(.7);
}
.wr-tool-card.is-exhausted:hover {
  opacity: .72;
  transform: translateY(-2px);
}
.wr-tool-card.is-exhausted::before { opacity: .5; }
.wr-tool-card.is-exhausted::after  { opacity: .35; }

/* Respect prefers-reduced-motion. */
@media (prefers-reduced-motion: reduce) {
  .wr-tool-card,
  .wr-tool-ai-badge svg {
    animation: none !important;
    transition: none !important;
  }
}

/* Per-tool accent (drives the bottom line + hover ring). */
.wr-tool-essay-grader      { --tool-accent: #D9A268; }
.wr-tool-exam-simulator    { --tool-accent: #E8B574; }
.wr-tool-paragraph-drills  { --tool-accent: #C99356; }
.wr-tool-sentence-upgrade  { --tool-accent: #6BA88A; }
.wr-tool-reverse-engineer  { --tool-accent: #C28066; }
.wr-tool-prompt-generator  { --tool-accent: #7A89B8; }

/* Premium variant — exam simulator. Same minimal system as the other
   AI cards but with a slightly stronger top-right wash and a brighter
   bottom line. No animation, no shine sweep — just a touch more
   intensity to mark it as the prestige tool. */
.wr-tool-card.is-premium::before {
  background: radial-gradient(closest-side,
    color-mix(in srgb, var(--tool-accent, #E8B574) 32%, transparent) 0%,
    transparent 70%);
}
.wr-tool-card.is-premium::after {
  opacity: .9;
  height: 2.5px;
}

/* ── Icon ───────────────────────────────────────────────────── */
.wr-tool-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: color-mix(in srgb, var(--tool-accent, #D9A268) 16%, transparent);
  color: var(--tool-accent, #D9A268);
  margin-bottom: .15rem;
}
.wr-tool-icon svg {
  width: 24px;
  height: 24px;
  stroke-width: 1.7;
}

/* ── AI badge (top-right) ───────────────────────────────────── */
.wr-tool-ai-badge {
  position: absolute;
  top: 13px;
  right: 13px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 11px 5px 8px;
  border-radius: 999px;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
  /* Solid honey gradient + dark ink text — pops against any background.
     The badge needs to read as a chip, not a tint. */
  color: #2A1F17;
  background: linear-gradient(135deg, #F0BE7E 0%, #D9A268 55%, #C18D52 100%);
  border: 1px solid color-mix(in srgb, #F0BE7E 70%, transparent);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .35),
    inset 0 -1px 0 rgba(0, 0, 0, .15),
    0 4px 10px -2px rgba(0, 0, 0, .45),
    0 0 0 1px rgba(0, 0, 0, .15);
  text-shadow: 0 1px 0 rgba(255, 240, 215, .25);
  z-index: 2;
}
.wr-tool-ai-badge svg {
  width: 12px;
  height: 12px;
  flex-shrink: 0;
  stroke-width: 2.2;
}

/* Premium variant: slightly larger, brighter gradient, soft glow ring.
   No animation — the brighter chip and "Premium" word do the work. */
.wr-tool-ai-badge.is-premium {
  padding: 5px 12px 5px 9px;
  font-size: .7rem;
  letter-spacing: .15em;
  color: #2A1F17;
  background: linear-gradient(135deg, #FFE0B4 0%, #F0BE7E 35%, #D9A268 70%, #B98448 100%);
  border-color: color-mix(in srgb, #FFE0B4 80%, transparent);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .5),
    inset 0 -1px 0 rgba(0, 0, 0, .18),
    0 4px 12px -2px rgba(0, 0, 0, .5),
    0 0 0 1px rgba(0, 0, 0, .18),
    0 0 16px -4px color-mix(in srgb, #F0BE7E 60%, transparent);
}

/* ── Text ───────────────────────────────────────────────────── */
.wr-tool-name {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 1.22rem;
  font-weight: 600;
  letter-spacing: -.005em;
  line-height: 1.2;
  color: var(--ielts-ink, #F2E6CC);
  margin: 0;
}
.wr-tool-desc {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: .86rem;
  line-height: 1.5;
  color: var(--ielts-ink-soft, #B6A484);
  margin: 0;
  flex: 1;
}

/* ── Meta row (bottom: limit chip) ──────────────────────────── */
.wr-tool-meta {
  display: flex;
  align-items: center;
  gap: .6rem;
  margin-top: .25rem;
  width: 100%;
  flex-wrap: wrap;
}

.wr-tool-limit {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px 4px 8px;
  border-radius: 999px;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--ielts-ink-soft, #B6A484);
  background: rgba(242, 230, 204, .06);
  border: 1px solid var(--ielts-line, rgba(242, 230, 204, .10));
}
.wr-tool-limit svg {
  width: 11px;
  height: 11px;
  opacity: .7;
}
/* AI tools get a honey-tinted chip. */
.wr-tool-card.is-ai .wr-tool-limit {
  color: var(--ielts-honey, #D9A268);
  background: color-mix(in srgb, var(--ielts-honey, #D9A268) 10%, transparent);
  border-color: color-mix(in srgb, var(--ielts-honey, #D9A268) 22%, transparent);
}
.wr-tool-card.is-ai .wr-tool-limit svg { opacity: .9; }

/* When exhausted, the limit chip is replaced with a "View past
   sessions" chip — neutral, slightly muted, with an open-book arrow.
   Click still routes to the tool's page (where the student sees
   their history view). */
.wr-tool-limit.is-exhausted {
  color: var(--ielts-ink-mute, #7A6A52);
  background: rgba(242, 230, 204, .04);
  border-color: var(--ielts-line, rgba(242, 230, 204, .10));
}
.wr-tool-card.is-ai .wr-tool-limit.is-exhausted {
  color: var(--ielts-ink-mute, #7A6A52);
  background: rgba(242, 230, 204, .04);
  border-color: var(--ielts-line, rgba(242, 230, 204, .10));
}

/* Optional secondary chip: "Unlimited" / hint. */
.wr-tool-hint {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .02em;
  color: var(--ielts-ink-mute, #7A6A52);
}

/* ── Practice tool full-page (stub for session 1) ───────────── */
.wr-practice-page {
  max-width: 720px;
  margin: 0 auto;
  padding: 2.2rem 0 4rem;
}
.wr-practice-page-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px 7px 10px;
  border-radius: 999px;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: .82rem;
  font-weight: 600;
  color: var(--ielts-ink-soft, #B6A484);
  background: rgba(242, 230, 204, .05);
  border: 1px solid var(--ielts-line, rgba(242, 230, 204, .10));
  text-decoration: none;
  transition: background-color .15s, color .15s, border-color .15s;
  margin-bottom: 2rem;
}
.wr-practice-page-back:hover {
  color: var(--ielts-ink, #F2E6CC);
  background: rgba(242, 230, 204, .10);
  border-color: color-mix(in srgb, var(--ielts-honey, #D9A268) 30%, transparent);
}

.wr-practice-page-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--tool-accent, var(--ielts-honey, #D9A268));
  margin-bottom: .6rem;
}
.wr-practice-page-eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 8px color-mix(in srgb, currentColor 60%, transparent);
}
.wr-practice-page-title {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 2.4rem;
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -.015em;
  color: var(--ielts-ink, #F2E6CC);
  margin: 0 0 .6rem;
}
.wr-practice-page-lede {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 1.02rem;
  line-height: 1.55;
  color: var(--ielts-ink-soft, #B6A484);
  margin: 0 0 2.4rem;
}

.wr-practice-page-card {
  padding: 2rem 2rem 1.75rem;
  background:
    linear-gradient(180deg,
      var(--ielts-card-lift, #3D2D1F) 0%,
      var(--ielts-card, #322519) 100%);
  border: 1px solid var(--ielts-line, rgba(242, 230, 204, .12));
  border-radius: 18px;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .03),
    0 18px 38px -22px rgba(0, 0, 0, .55);
}
.wr-practice-page-card-h {
  display: flex;
  align-items: center;
  gap: .65rem;
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 1.18rem;
  font-weight: 600;
  color: var(--ielts-ink, #F2E6CC);
  margin: 0 0 .9rem;
}
.wr-practice-page-card-h svg {
  width: 18px;
  height: 18px;
  color: var(--tool-accent, var(--ielts-honey, #D9A268));
}
.wr-practice-page-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.wr-practice-page-card li {
  position: relative;
  padding: .55rem 0 .55rem 1.45rem;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: .93rem;
  line-height: 1.55;
  color: var(--ielts-ink-soft, #C7B695);
  border-bottom: 1px dashed var(--ielts-line, rgba(242, 230, 204, .07));
}
.wr-practice-page-card li:last-child { border-bottom: 0; }
.wr-practice-page-card li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 1.05em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--tool-accent, var(--ielts-honey, #D9A268));
  opacity: .8;
}

.wr-practice-page-soon {
  display: flex;
  align-items: center;
  gap: .6rem;
  margin-top: 1.4rem;
  padding: .85rem 1.1rem;
  background: color-mix(in srgb, var(--tool-accent, #D9A268) 8%, transparent);
  border: 1px dashed color-mix(in srgb, var(--tool-accent, #D9A268) 30%, transparent);
  border-radius: 12px;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: .88rem;
  color: var(--ielts-ink, #F2E6CC);
}
.wr-practice-page-soon svg {
  width: 16px;
  height: 16px;
  color: var(--tool-accent, var(--ielts-honey, #D9A268));
  flex-shrink: 0;
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1000px) {
  .wr-practice-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .wr-practice-grid {
    grid-template-columns: 1fr;
  }
  .wr-practice-title { font-size: 1.65rem; }
  .wr-practice-head { gap: .9rem; }
  .wr-practice-legend {
    font-size: .68rem;
    gap: .8rem;
  }
  .wr-tool-card {
    padding: 1.3rem 1.3rem 1.2rem;
    min-height: 0;
  }
  .wr-tool-name { font-size: 1.12rem; }
  .wr-tool-desc { font-size: .82rem; }
  .wr-practice-page-title { font-size: 1.85rem; }
  .wr-practice-page-card { padding: 1.4rem 1.3rem 1.2rem; }
}