/* ── EXERCISES (A1–B1) ───────────────────────── */

.exercises-hero {
  background: linear-gradient(180deg, var(--teal-lt) 0%, var(--bg) 100%);
  padding-bottom: 48px;
}

.exercises-hero-title {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  margin-bottom: 20px;
  max-width: 720px;
}

.exercises-hero-lead {
  font-size: 1.05rem;
  max-width: 640px;
  color: var(--fg);
  line-height: 1.75;
}

.exercises-level-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.exercise-level {
  display: inline-flex;
  align-items: center;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: 50px;
  border: 1.5px solid var(--border);
  background: #fff;
  color: var(--fg);
}

.exercise-level--a1 {
  border-color: var(--teal);
  color: var(--teal-dk);
  background: rgba(61, 122, 112, .08);
}

.exercise-level--a2 {
  border-color: #5a8a7a;
  color: #2d5048;
  background: rgba(61, 122, 112, .12);
}

.exercise-level--b1 {
  border-color: var(--teal-dk);
  color: #1a3d36;
  background: rgba(45, 96, 88, .15);
}

.exercise-level--b2 {
  border-color: #2d5048;
  color: #142e29;
  background: rgba(45, 96, 88, .2);
}

.exercises-section-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.exercise-section-card {
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: 20px;
  padding: 28px 26px 26px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: box-shadow .2s, transform .2s, border-color .2s;
}

.exercise-section-card:hover {
  border-color: var(--teal);
  box-shadow: 0 10px 36px rgba(61, 122, 112, .14);
  transform: translateY(-2px);
}

.exercise-section-en {
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--teal);
}

.exercise-section-title {
  font-family: var(--serif);
  font-size: 1.45rem;
  font-weight: 500;
  color: var(--fg);
  line-height: 1.25;
  margin: 0;
}

.exercise-section-desc {
  font-size: .9rem;
  color: var(--fg-muted);
  line-height: 1.65;
  margin: 0;
  flex: 1;
}

.exercise-examples-label {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin: 0 0 8px;
}

.exercise-examples-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.exercise-examples-list li {
  font-size: .82rem;
  line-height: 1.5;
  padding: 10px 12px;
  background: var(--bg-alt);
  border-radius: 10px;
  border-left: 3px solid var(--teal);
}

.exercise-examples-list strong {
  display: block;
  color: var(--fg);
  font-weight: 600;
  margin-bottom: 2px;
}

.exercise-examples-list span {
  color: var(--fg-muted);
}

.exercise-section-meta {
  display: flex;
  gap: 16px;
  font-size: .78rem;
  font-weight: 600;
  color: var(--teal-dk);
}

.exercise-section-cta {
  width: 100%;
  text-align: center;
  margin-top: auto;
}

.exercise-examples-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.exercise-example-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 20px;
  border-left: 4px solid var(--teal);
}

.exercise-example-en {
  font-size: .95rem;
  font-weight: 600;
  color: var(--fg);
  margin: 0 0 6px;
  line-height: 1.45;
}

.exercise-example-pl {
  font-size: .85rem;
  color: var(--fg-muted);
  margin: 0;
  line-height: 1.5;
}

.exercise-level-group {
  margin-bottom: 40px;
}

.exercise-level-heading {
  margin: 0 0 14px;
}

.exercise-task-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.exercise-task-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-decoration: none;
  color: var(--fg);
  transition: border-color .18s, background .18s;
}

.exercise-task-link:hover {
  border-color: var(--teal);
  background: rgba(61, 122, 112, .04);
}

.exercise-task-type {
  flex-shrink: 0;
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: 6px;
  background: var(--teal-lt);
  color: var(--teal-dk);
}

.exercise-task-text {
  flex: 1;
  font-size: .92rem;
  line-height: 1.45;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.exercise-task-arrow {
  color: var(--teal);
  font-weight: 600;
}

/* Homepage promo card */
.exercises-promo-card {
  background: var(--card);
  border: 2px solid var(--teal);
  border-radius: 20px;
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: 0 8px 40px rgba(61, 122, 112, .16);
  max-width: 860px;
  margin: 0 auto;
}

.exercises-promo-card .test-tag {
  color: var(--teal-dk);
}

.exercises-promo-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  font-size: .88rem;
  color: var(--fg-muted);
}

.exercises-promo-stats strong {
  color: var(--teal-dk);
}

.exercises-promo-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.exercises-promo-topic {
  font-size: .75rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 50px;
  background: var(--bg-alt);
  color: var(--fg);
  border: 1px solid var(--border);
}

/* Single exercise runner */
.exercise-page-section {
  padding-top: 32px;
  padding-bottom: 64px;
}

.exercise-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: .82rem;
  margin-bottom: 24px;
  color: var(--fg-muted);
}

.exercise-breadcrumb a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 122, 112, .3);
}

.exercise-runner-card {
  max-width: 680px;
  margin: 0 auto;
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: 20px;
  padding: 36px 32px;
  box-shadow: 0 6px 28px rgba(0, 0, 0, .06);
}

.exercise-runner-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.exercise-runner-type {
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.exercise-runner-question {
  font-family: var(--serif);
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 500;
  line-height: 1.35;
  color: var(--fg);
  margin: 0 0 28px;
}

.exercise-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
}

.exercise-option {
  text-align: left;
  padding: 14px 18px;
  border: 1.5px solid var(--border);
  border-radius: 12px;
  background: var(--bg);
  font-family: var(--sans);
  font-size: .95rem;
  color: var(--fg);
  cursor: pointer;
  transition: border-color .15s, background .15s;
}

.exercise-option:hover {
  border-color: var(--teal);
}

.exercise-option.is-selected {
  border-color: var(--teal);
  background: rgba(61, 122, 112, .08);
}

.exercise-option.is-correct {
  border-color: #2e7d5a;
  background: rgba(46, 125, 90, .12);
}

.exercise-option.is-wrong {
  border-color: #c0392b;
  background: rgba(192, 57, 43, .08);
}

.exercise-input-wrap {
  margin-bottom: 24px;
}

.exercise-input {
  width: 100%;
  box-sizing: border-box;
  padding: 14px 18px;
  font-size: 1rem;
  font-family: var(--sans);
  border: 1.5px solid var(--border);
  border-radius: 12px;
  background: var(--bg);
  color: var(--fg);
  outline: none;
  transition: border-color .2s;
}

.exercise-input:focus {
  border-color: var(--teal);
}

.exercise-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.exercise-hint {
  font-size: .88rem;
  color: var(--fg-muted);
  line-height: 1.6;
  padding: 12px 16px;
  background: var(--bg-alt);
  border-radius: 10px;
  border-left: 3px solid var(--teal);
  margin: 0 0 16px;
}

.exercise-feedback {
  padding: 14px 18px;
  border-radius: 12px;
  font-size: .92rem;
  line-height: 1.55;
  margin-bottom: 16px;
}

.exercise-feedback.is-ok {
  background: rgba(46, 125, 90, .12);
  color: #1e5c40;
  border: 1px solid rgba(46, 125, 90, .35);
}

.exercise-feedback.is-bad {
  background: rgba(192, 57, 43, .08);
  color: #8b2e24;
  border: 1px solid rgba(192, 57, 43, .25);
}

.exercise-nav-links {
  margin-top: 8px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.exercise-back-link {
  font-size: .88rem;
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 122, 112, .35);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 900px) {
  .exercises-section-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .exercises-section-grid,
  .exercise-examples-grid {
    grid-template-columns: 1fr;
  }

  .exercise-task-text {
    white-space: normal;
  }

  .exercises-promo-card {
    padding: 28px 22px;
  }

  .exercise-runner-card {
    padding: 28px 20px;
  }
}