/* ==================================================
   LEHRERBEREICH – FARBEN
================================================== */

:root {
  --teacher-accent: #e4544d;
  --teacher-accent-hover: #cf4741;

  --teacher-accent-soft: #fbf4f3;
  --teacher-accent-border: #eedad8;

  --page-bg: #ffffff;
  --surface: #ffffff;
  --surface-soft: #f5f5f7;

  --text-primary: #111111;
  --text-secondary: #6e6e73;
  --text-tertiary: #8e8e93;

  --border: rgba(0, 0, 0, 0.075);
  --border-soft: rgba(0, 0, 0, 0.055);

  --chip-bg: #f5f5f7;
}
html,
body {
  background: #ffffff;
}

.teacher-page {
  min-height: 100vh;
  background: #ffffff;
}

/* ==================================================
   LEHRERBEREICH – STARTSEITE
   Ergänzung zum bestehenden schulspanisch-Layout
================================================== */

.teacher-page {
  min-height: 100vh;
  background: #fff;
}

.teacher-hero {
  padding: 84px 20px 36px;
}

.teacher-container {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
}

.teacher-intro {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.teacher-icon {
  width: 54px;
  height: 54px;
  margin: 0 auto 18px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: var(--teacher-accent);
  background: var(--teacher-accent-soft);
  font-size: 1.35rem;
}

.teacher-title {
  margin: 0;
  color: #111;
  font-size: clamp(2.45rem, 6vw, 4.7rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
  font-weight: 750;
}

.teacher-subtitle {
  max-width: 640px;
  margin: 22px auto 0;
  color: #6e6e73;
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.6;
}

.teacher-accent {
  width: 54px;
  height: 3px;
  margin: 28px auto 0;
  border-radius: 99px;
  background: var(--teacher-accent);
}

.teacher-section {
  padding: 22px 20px 86px;
}

.teacher-section-title {
  margin: 0 0 24px;
  text-align: center;
  color: #111;
  font-size: 1.05rem;
  font-weight: 700;
}

.teacher-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  max-width: 820px;
  margin: 0 auto;
}

.teacher-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 300px;
  padding: 42px 32px 34px;
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 26px;
  background: #fff;
  color: inherit;
  text-decoration: none;
  text-align: center;
  box-shadow: 0 12px 38px rgba(0,0,0,0.055);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.teacher-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255,59,48,0.22);
  box-shadow: 0 18px 48px rgba(0,0,0,0.08);
}

.teacher-card-icon {
  width: 78px;
  height: 78px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  margin-bottom: 24px;
  background: var(--teacher-accent-soft);
  color: var(--teacher-accent);
  font-size: 1.7rem;
}

.teacher-card h2 {
  margin: 0;
  color: #111;
  font-size: 1.55rem;
  letter-spacing: -0.025em;
}

.teacher-card-line {
  width: 34px;
  height: 2px;
  margin: 16px 0;
  border-radius: 99px;
  background: var(--teacher-accent);
}

.teacher-card p {
  max-width: 270px;
  margin: 0;
  color: #6e6e73;
  font-size: .97rem;
  line-height: 1.55;
}

.teacher-card-arrow {
  margin-top: auto;
  padding-top: 28px;
  color: var(--teacher-accent);
  font-size: 1.35rem;
  transition: transform .2s ease;
}

.teacher-card:hover .teacher-card-arrow {
  transform: translateX(4px);
}

.teacher-how {
  max-width: 820px;
  margin: 28px auto 0;
  padding: 18px 22px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  border-radius: 18px;
  background: rgba(255,59,48,0.055);
  color: #333336;
  line-height: 1.55;
}

.teacher-how i {
  margin-top: 3px;
  color: var(--teacher-accent);
}

.teacher-how strong {
  color: #111;
}

@media (max-width: 720px) {
  .teacher-hero {
    padding-top: 58px;
  }

  .teacher-section {
    padding-bottom: 64px;
  }

  .teacher-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .teacher-card {
    min-height: 240px;
    padding: 32px 24px 26px;
  }

  .teacher-card-icon {
    width: 68px;
    height: 68px;
    margin-bottom: 20px;
  }

  .teacher-how {
    font-size: .92rem;
  }
}

.footer-space {
  background: #ffffff;
}

@media (prefers-color-scheme: dark) {
  .footer-space {
    background: #111214;
  }
}

/* ==================================================
   DARK MODE
================================================== */

@media (prefers-color-scheme: dark) {

    html,
  body,
  .teacher-page {
    background: #111214;
  }

  .teacher-page {
    background: #111214;
  }

  .teacher-title,
  .teacher-section-title,
  .teacher-card h2,
  .teacher-how strong {
    color: #f5f5f7;
  }

  .teacher-subtitle,
  .teacher-card p {
    color: #a1a1a6;
  }

  .teacher-card {
    background: #1c1c1e;
    border-color: rgba(255, 255, 255, 0.09);
    box-shadow: none;
  }

  .teacher-card:hover {
    border-color: rgba(255, 59, 48, 0.3);
    box-shadow: 0 18px 48px rgba(0, 0, 0, 0.22);
  }

  .teacher-how {
    background: rgba(255, 59, 48, 0.09);
    color: #d1d1d6;
  }

}


/* ==================================================
   LEHRERBEREICH – THEMENSEITE
   MASTER-VORLAGE
   Kann später komplett nach /styles/lehrer.css
================================================== */

.teacher-topic-hero {
  padding: 56px 20px 26px;
}

.teacher-topic-back {
  width: min(880px, calc(100% - 32px));
  margin: 0 auto 30px;
}

.teacher-topic-back a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #6e6e73;
  font-size: .92rem;
  text-decoration: none;
  transition: color .2s ease;
}

.teacher-topic-back a:hover {
  color: var(--teacher-accent);
}

.teacher-topic-main {
  width: min(880px, calc(100% - 32px));
  margin: 0 auto;
  padding: 8px 0 88px;
}

.teacher-resource-card {
  max-width: 720px;
  margin: 0 auto;
  padding: 38px;
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 26px;
  background: #fff;
  box-shadow: 0 12px 38px rgba(0,0,0,0.055);
}

.teacher-resource-intro {
  max-width: 560px;
  margin: 0 auto 30px;
  text-align: center;
}

.teacher-resource-intro h2 {
  margin: 0;
  color: #111;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.teacher-resource-intro p {
  margin: 10px 0 0;
  color: #6e6e73;
  font-size: .96rem;
  line-height: 1.55;
}

.teacher-qr {
  width: 220px;
  height: 220px;
  margin: 0 auto;
  padding: 14px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 22px;
  background: #fff;
}

.teacher-qr img,
.teacher-qr canvas {
  max-width: 100%;
  height: auto;
}

.teacher-qr-label {
  margin: 16px auto 0;
  max-width: 430px;
  text-align: center;
  color: #6e6e73;
  font-size: .9rem;
  line-height: 1.5;
}

.teacher-resource-actions {
  margin-top: 28px;
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.teacher-resource-button {
  min-height: 48px;
  padding: 0 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border-radius: 14px;
  text-decoration: none;
  font-size: .94rem;
  font-weight: 650;
  transition: transform .18s ease, opacity .18s ease;
}

.teacher-resource-button:hover {
  transform: translateY(-1px);
}

.teacher-resource-button--primary {
  background: var(--teacher-accent);
  color: #fff;
}

.teacher-resource-button--primary:hover {
  background: var(--teacher-accent-hover);
}

.teacher-resource-button--secondary {
  border: 1px solid rgba(0,0,0,0.1);
  background: #f7f7f9;
  color: #1d1d1f;
}

.teacher-eduki-section {
  max-width: 720px;
  margin: 34px auto 0;
  padding-top: 30px;
  border-top: 1px solid rgba(0,0,0,0.08);
}

.teacher-eduki-head {
  margin-bottom: 18px;
  text-align: center;
}

.teacher-eduki-head h2 {
  margin: 0;
  color: #111;
  font-size: 1.18rem;
  letter-spacing: -0.02em;
}

.teacher-eduki-head p {
  margin: 8px 0 0;
  color: #6e6e73;
  font-size: .92rem;
  line-height: 1.5;
}

/* Platzhalter, den upgrade.js befüllen kann */
#upgrade-materials {
  min-height: 1px;
}

@media (max-width: 720px) {

  .teacher-topic-hero {
    padding-top: 44px;
  }

  .teacher-resource-card {
    padding: 28px 20px;
  }

  .teacher-qr {
    width: 200px;
    height: 200px;
  }

  .teacher-resource-actions {
    flex-direction: column;
  }

  .teacher-resource-button {
    width: 100%;
  }

  .teacher-topic-main {
    padding-bottom: 64px;
  }

}

@media (prefers-color-scheme: dark) {

  .teacher-topic-back a,
  .teacher-resource-intro p,
  .teacher-qr-label,
  .teacher-eduki-head p {
    color: #a1a1a6;
  }

  .teacher-resource-card {
    background: #1c1c1e;
    border-color: rgba(255,255,255,0.09);
    box-shadow: none;
  }

  .teacher-resource-intro h2,
  .teacher-eduki-head h2 {
    color: #f5f5f7;
  }

  .teacher-qr {
    /* QR selbst bewusst weiß lassen */
    background: #fff;
    border-color: rgba(255,255,255,0.12);
  }

  .teacher-resource-button--secondary {
    background: #242426;
    border-color: rgba(255,255,255,0.1);
    color: #f5f5f7;
  }

  .teacher-eduki-section {
    border-color: rgba(255,255,255,0.09);
  }

}

/* ==================================================
   UPGRADE / EDUKI MATERIALIEN
================================================== */

.upgrade-preview {
  max-width: 720px;
  margin: 34px auto 0;
  padding-top: 30px;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.upgrade-preview.is-hidden {
  display: none;
}

.upgrade-preview__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.upgrade-preview__card {
  display: block;
  overflow: hidden;

  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 20px;

  background: #fff;
  color: inherit;
  text-decoration: none;

  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.045);

  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    border-color 0.2s ease;
}

.upgrade-preview__card:hover {
  transform: translateY(-3px);


  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.075);
}


/* Bild */

.upgrade-preview__media {
  position: relative;
  overflow: hidden;

  aspect-ratio: 16 / 10;

  background: #f7f7f9;
}

.upgrade-preview__img {
  width: 100%;
  height: 100%;

  display: flex;
  align-items: center;
  justify-content: center;
}

.upgrade-preview__img img {
  display: block;

  width: 100%;
  height: 100%;

  object-fit: contain;
}



.upgrade-preview__fallback {
  width: 100%;
  height: 100%;

  background: #f2f2f4;
}


/* Eduki Badge */

.upgrade-preview__badge {
  position: absolute;
  right: 10px;
  bottom: 10px;

  padding: 6px 10px;

  border-radius: 999px;

  background: rgba(255, 255, 255, 0.94);
  color: var(--teacher-accent);

  font-size: 0.72rem;
  font-weight: 650;

  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}


/* Text */

.upgrade-preview__meta {
  padding: 17px 18px 19px;
}

.upgrade-preview__cardTitle {
  margin: 0;

  color: #111;

  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.015em;
}

.upgrade-preview__cardDesc {
  margin: 7px 0 0;

  color: #6e6e73;

  font-size: 0.86rem;
  line-height: 1.5;
}


/* Empfohlen */




/* ==================================================
   MOBILE
================================================== */

@media (max-width: 720px) {

  .upgrade-preview {
    margin-top: 28px;
    padding-top: 26px;
  }

  .upgrade-preview__grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

}


/* ==================================================
   DARK MODE
================================================== */

@media (prefers-color-scheme: dark) {

  .upgrade-preview {
    border-color: rgba(255, 255, 255, 0.09);
  }

  .upgrade-preview__card {
    background: #1c1c1e;
    border-color: rgba(255, 255, 255, 0.09);
    box-shadow: none;
  }

  .upgrade-preview__card:hover {

    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
  }

  .upgrade-preview__media,
  .upgrade-preview__fallback {
    background: #242426;
  }

  .upgrade-preview__cardTitle {
    color: #f5f5f7;
  }

  .upgrade-preview__cardDesc {
    color: #a1a1a6;
  }

  .upgrade-preview__badge {
    background: rgba(28, 28, 30, 0.94);
    color: #ff453a;
  }


}

/* ==================================================
   KOSTENLOSE SCHÜLERINHALTE
================================================== */

.teacher-free-content {
  max-width: 720px;
  margin: 34px auto 0;
  padding: 30px 0 0;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.teacher-free-content__head {
  text-align: center;
  margin-bottom: 22px;
}

.teacher-free-content__eyebrow {
  display: inline-block;
  margin-bottom: 8px;

  color: var(--teacher-accent);

  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .03em;
  text-transform: uppercase;
}

.teacher-free-content__head h2 {
  margin: 0;

  color: #111;

  font-size: 1.18rem;
  letter-spacing: -0.02em;
}

.teacher-free-content__head p {
  margin: 8px 0 0;

  color: #6e6e73;

  font-size: .92rem;
  line-height: 1.5;
}

.teacher-free-content__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.teacher-free-content__item {
  display: flex;
  align-items: center;
  gap: 11px;

  min-height: 52px;
  padding: 12px 14px;

  border-radius: 14px;

  background: #f7f7f9;

  color: #1d1d1f;

  font-size: .92rem;
}

.teacher-free-content__item i {
  width: 18px;

  color: #86868b;

  text-align: center;
  font-size: .9rem;
}


/* MOBILE */

@media (max-width: 720px) {

  .teacher-free-content__grid {
    grid-template-columns: 1fr;
  }

}


/* DARK MODE */

@media (prefers-color-scheme: dark) {

  .teacher-free-content {
    border-color: rgba(255,255,255,0.09);
  }

  .teacher-free-content__head h2 {
    color: #f5f5f7;
  }

  .teacher-free-content__head p {
    color: #a1a1a6;
  }

  .teacher-free-content__item {
    background: #242426;
    color: #f5f5f7;
  }

}

/* ==================================================
   QR-CODE HIGHLIGHT
================================================== */

.teacher-qr-highlight {
  max-width: 560px;
  margin: 24px auto 0;
  text-align: center;
}

.teacher-qr-highlight__main {
  color: #111;

  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  font-weight: 750;
  line-height: 1.35;
  letter-spacing: -0.02em;
}

.teacher-qr-highlight__main span {
  color: var(--teacher-accent);
}

.teacher-qr-highlight__sub {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;

  margin-top: 14px;
  padding: 9px 16px;

  border-radius: 999px;

  background: #f7f7f8;
  color: #6e6e73;

  font-size: .9rem;
  line-height: 1.4;
}

.teacher-qr-highlight__sub i {
  color: var(--teacher-accent);
  font-size: .9rem;
}


/* MOBILE */

@media (max-width: 720px) {

  .teacher-qr-highlight {
    margin-top: 20px;
  }

  .teacher-qr-highlight__sub {
    width: 100%;
    padding: 10px 14px;

    border-radius: 14px;
  }

}


/* DARK MODE */

@media (prefers-color-scheme: dark) {

  .teacher-qr-highlight__main {
    color: #f5f5f7;
  }

  .teacher-qr-highlight__sub {
    background: #242426;
    color: #c7c7cc;
  }

}

/* ==================================================
   KOSTENLOSE INHALTE – TOGGLE
================================================== */

.teacher-free-content__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;

  margin: 22px auto 0;
  padding: 11px 18px;

  border: 0;
  border-radius: 999px;

  background: rgba(0, 122, 255, 0.08);
  color: #007aff;

  font: inherit;
  font-size: .88rem;
  font-weight: 650;

  cursor: pointer;

  transition:
    background .18s ease,
    transform .18s ease;
}

.teacher-free-content__toggle:hover {
  background: rgba(0, 122, 255, 0.13);
  transform: translateY(-1px);
}

.teacher-free-content__toggle i {
  font-size: .72rem;
  transition: transform .22s ease;
}

.teacher-free-content__toggle[aria-expanded="true"] i {
  transform: rotate(180deg);
}
/* ==================================================
   WEITERE INHALTE ANDEUTEN
================================================== */

.teacher-free-content__grid {
  position: relative;
}


/* Zusätzliche Inhalte standardmäßig ausblenden */

.teacher-free-content__item.is-extra {
  display: none;
}


/* Nächste zwei Inhalte angeschnitten zeigen */

.teacher-free-content__item.is-extra:nth-child(4),
.teacher-free-content__item.is-extra:nth-child(5) {
  display: flex;

  height: 28px;
  min-height: 28px;

  overflow: hidden;

  opacity: .35;

  pointer-events: none;
}


/* Weiches Ausblenden */

.teacher-free-content__grid:not(.is-expanded) {
  overflow: hidden;
}

.teacher-free-content__grid:not(.is-expanded)::after {
  content: "";

  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;

  height: 36px;

  pointer-events: none;

  background: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0),
    #ffffff 92%
  );
}


/* AUSGEKLAPPT */

.teacher-free-content__grid.is-expanded
.teacher-free-content__item.is-extra {
  display: flex;

  height: auto;
  min-height: 52px;

  opacity: 1;

  overflow: visible;

  pointer-events: auto;
}


/* Fade entfernen, wenn geöffnet */

.teacher-free-content__grid.is-expanded::after {
  display: none;
}


/* Toggle etwas näher an die angedeuteten Inhalte */

.teacher-free-content__toggle {
  margin-top: 10px;
}


/* DARK MODE */

@media (prefers-color-scheme: dark) {

  .teacher-free-content__grid:not(.is-expanded)::after {
    background: linear-gradient(
      to bottom,
      rgba(17, 18, 20, 0),
      #111214 92%
    );
  }

}

.teacher-free-content__toggle[hidden] {
  display: none;
}

.teacher-topic-divider {
  grid-column: 1 / -1;
  margin: 12px 4px 2px;

  color: #8e8e93;

  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
}


/* Interaktive Trainer */

.teacher-topic--tool {
  background: #f3f6fa;
}

.teacher-topic--tool:hover {
  background: #edf2f8;
}


/* Abschlussprojekt */

.teacher-topic--final {
  grid-column: 1 / -1;

  margin-top: 8px;

  min-height: 68px;

  background: var(--teacher-accent-soft);
  border: 1px solid var(--teacher-accent-border);
}

.teacher-topic--final > span:first-child {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.teacher-topic-final-label {
  color: var(--teacher-accent);

  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.teacher-topic--final:hover {
  background: var(--teacher-accent-soft-hover);
}


/* Dark Mode */

@media (prefers-color-scheme: dark) {

  .teacher-topic--tool {
    background: #20242a;
  }

  .teacher-topic--tool:hover {
    background: #272c33;
  }

  .teacher-topic--final {
    background: rgba(232, 93, 82, 0.10);
    border-color: rgba(232, 93, 82, 0.22);
  }

}


/* ==================================================
   GRAMMATIK – VERTEILERSEITE
   Konsolidiert · nutzt das zentrale teacher-accent-System
================================================== */

.grammar-page {
  --grammar-page-bg: #ffffff;
  --grammar-surface: #ffffff;
  --grammar-text-primary: #111111;
  --grammar-text-secondary: #6e6e73;
  --grammar-text-tertiary: #8e8e93;
  --grammar-border: rgba(0, 0, 0, 0.08);
  --grammar-border-soft: rgba(0, 0, 0, 0.05);
  --grammar-shadow: 0 6px 20px rgba(0, 0, 0, 0.035);
  --grammar-content-radius: 28px;

  min-height: 100vh;
  background: var(--grammar-page-bg);
  color: var(--grammar-text-primary);
}

.grammar-page,
.grammar-page * {
  box-sizing: border-box;
}

.grammar-page a {
  color: inherit;
  text-decoration: none;
}

/* IMAGE HERO */
.grammar-image-hero {
  position: sticky;
  top: 0;
  z-index: 0;
  height: 390px;
  background: url("/2_grammatik/01_bilder/basiswissen.jpg") center center / cover no-repeat;
}

@media (max-width: 767px) {
  .grammar-image-hero {
    height: 270px;
  }
}

.grammar-image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.03), rgba(0, 0, 0, 0.08));
}

/* CONTENT */
.grammar-content {
  position: relative;
  z-index: 5;
  margin-top: -28px;
  min-height: 100vh;
  overflow: hidden;
  border-radius: var(--grammar-content-radius) var(--grammar-content-radius) 0 0;
  background: var(--grammar-page-bg);
}

.grammar-container {
  width: min(100%, 920px);
  margin: 0 auto;
  padding: 28px 20px 64px;
}

/* BACK */
.grammar-back {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 42px;
  color: var(--grammar-text-secondary);
  font-size: 1rem;
  font-weight: 450;
  transition: color .2s ease, transform .2s ease;
}

.grammar-back:hover {
  color: var(--teacher-accent);
}

.grammar-back-arrow {
  color: var(--teacher-accent);
  font-size: 1.35rem;
  line-height: 1;
}

/* INTRO */
.grammar-intro {
  padding-bottom: 42px;
  text-align: center;
}

.grammar-icon {
  width: 62px;
  height: 62px;
  margin: 0 auto 24px;
  display: grid;
  place-items: center;
  border-radius: 19px;
  background: var(--teacher-accent-soft);
}

.grammar-icon svg {
  width: 28px;
  height: 28px;
  fill: var(--teacher-accent);
}

.grammar-intro h1 {
  margin: 0;
  font-size: clamp(2.8rem, 14vw, 4.5rem);
  line-height: .98;
  font-weight: 750;
  letter-spacing: -.065em;
}

.grammar-intro p {
  max-width: 650px;
  margin: 24px auto 0;
  color: var(--grammar-text-secondary);
  font-size: 1.14rem;
  line-height: 1.55;
  letter-spacing: -.015em;
}

.grammar-divider {
  width: 58px;
  height: 4px;
  margin: 28px auto 0;
  border-radius: 999px;
  background: var(--teacher-accent);
}

/* GROUPS / CARD */
.grammar-groups {
  display: grid;
  gap: 18px;
}

.grammar-card {
  overflow: hidden;
  border: 1px solid var(--grammar-border);
  border-radius: 25px;
  background: var(--grammar-surface);
  box-shadow: var(--grammar-shadow);
}

.grammar-card summary {
  list-style: none;
}

.grammar-card summary::-webkit-details-marker {
  display: none;
}

.grammar-card-summary {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 16px;
  padding: 22px;
  cursor: pointer;
  user-select: none;
}

.grammar-card-icon {
  width: 58px;
  height: 58px;

  display: grid;
  place-items: center;

  border-radius: 18px;

  background: var(--surface-soft);
  color: var(--teacher-accent);
}

.grammar-level-icon--progress {
  width: 31px;
  height: 31px;
  stroke-width: 1.75;
}

.grammar-level-icon {
  width: 30px;
  height: 30px;

  fill: none;
  stroke: currentColor;

  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.grammar-card-main {
  min-width: 0;
}

.grammar-card-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.grammar-card h2 {
  margin: 1px 0 7px;
  font-size: 1.45rem;
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -.035em;
}

.level-badge {
  display: inline-flex;
  align-items: center;
  min-height: 27px;
  padding: 4px 9px;
  border-radius: 8px;
  background: var(--teacher-accent-soft);
  color: var(--teacher-accent);
  font-size: .8rem;
  font-weight: 650;
}

.grammar-chevron {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  margin: 11px 4px 0 0;
  border-right: 2px solid var(--teacher-accent);
  border-bottom: 2px solid var(--teacher-accent);
  transform: rotate(45deg);
  transition: transform .25s ease;
}

.grammar-card[open] .grammar-chevron {
  transform: rotate(225deg);
}

.grammar-card-description {
  margin: 10px 0 0;
  color: var(--grammar-text-secondary);
  font-size: .96rem;
  line-height: 1.45;
}

/* PREVIEW CHIPS */
.grammar-topic-preview {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--grammar-border-soft);
}

.grammar-topic-preview span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 7px 11px;
  border-radius: 10px;
  background: var(--teacher-accent-soft);
  color: var(--teacher-accent);
  font-size: .84rem;
}

.grammar-topic-preview .more {
  background: transparent;
  color: var(--grammar-text-secondary);
}

/* EXPANDED CONTENT */
.grammar-card-content {
  display: grid;
  padding: 0 22px 22px;
  border-top: 1px solid var(--grammar-border-soft);
}

.grammar-topic {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 54px;
  padding: 0 4px;
  border-bottom: 1px solid var(--grammar-border-soft);
  color: var(--grammar-text-primary);
  font-size: .98rem;
  font-weight: 500;
  transition: color .2s ease, transform .2s ease;
}

.grammar-topic > span:last-child {
  flex: 0 0 auto;
  color: var(--teacher-accent);
  transition: transform .2s ease;
}

.grammar-topic:hover {
  color: var(--teacher-accent);
}

.grammar-topic:hover > span:last-child {
  transform: translateX(3px);
}

.grammar-topic-divider {
  display: flex;
  align-items: center;
  min-height: 50px;
  margin-top: 8px;
  color: var(--grammar-text-tertiary);
  font-size: .72rem;
  font-weight: 650;
  letter-spacing: .04em;
  text-transform: uppercase;
}

/* INTERACTIVE TOOLS */
.grammar-topic--tool > span:first-child {
  display: flex;
  align-items: center;
  gap: 8px;
}

.grammar-topic--tool small {
  display: inline-flex;
  align-items: center;
  padding: 3px 7px;
  border-radius: 7px;
  background: var(--teacher-accent-soft);
  color: var(--teacher-accent);
  font-size: .68rem;
  font-weight: 650;
}

/* FINAL PROJECT */
.grammar-topic-final-content {
  display: block;
  margin-top: 20px;
}

.grammar-topic--final {
  min-height: 68px;
  padding: 12px 15px;
  border: 1px solid var(--teacher-accent-border);
  border-radius: 15px;
  background: var(--teacher-accent-soft);
}



.grammar-topic-final-title {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 3px;
}

.grammar-topic-final-title > span {
  font-weight: 650;
}

.grammar-topic-final-title small {
  color: var(--teacher-accent);
  font-size: .72rem;
  font-weight: 600;
}

/* INFO BOX */
.grammar-info {
  display: flex;
  align-items: flex-start;
  gap: 14px;

  margin-top: 34px;
  padding: 20px 22px;

  border: 1px solid var(--grammar-border);
  border-radius: 18px;

  background: var(--surface-soft);
  color: var(--grammar-text-secondary);
}

.grammar-info-icon {
  flex: 0 0 auto;

  width: 32px;
  height: 32px;

  display: grid;
  place-items: center;

  border-radius: 10px;

  background: var(--grammar-surface);
  color: var(--teacher-accent);

  font-size: 1rem;
}

.grammar-info-text strong {
  color: var(--grammar-text-primary);
}

/* TABLET / DESKTOP */
@media (min-width: 768px) {
  .grammar-topic {
    min-height: 58px;
    padding: 0 8px;
    font-size: 1rem;
  }

  .grammar-topic--final {
    min-height: 72px;
    padding: 14px 18px;
  }

  .grammar-info {
    margin-top: 34px;
    padding: 21px 23px;
  }

  .grammar-info-text {
    font-size: .93rem;
  }
}

/* DARK MODE */
@media (prefers-color-scheme: dark) {

  .grammar-page {
    --grammar-page-bg: #111214;
    --grammar-surface: #1c1c1e;
    --grammar-text-primary: #f5f5f7;
    --grammar-text-secondary: #a1a1a6;
    --grammar-text-tertiary: #7d7d82;
    --grammar-border: rgba(255, 255, 255, 0.10);
    --grammar-border-soft: rgba(255, 255, 255, 0.07);
    --grammar-shadow: 0 6px 20px rgba(0, 0, 0, 0.14);
  }

  .grammar-card,
  .grammar-card:hover,
  .grammar-card:focus-within {
    background: #1c1c1e !important;
    border-color: rgba(255, 255, 255, 0.10) !important;
    box-shadow: var(--grammar-shadow) !important;
    transform: none !important;
  }

  .grammar-card-summary:hover {
    background: transparent !important;
  }

  .grammar-image-overlay {
    background: linear-gradient(
      to bottom,
      rgba(0, 0, 0, .16),
      rgba(0, 0, 0, .34)
    );
  }

  .grammar-info-icon {
    background: #1c1c1e;
  }
}

/* REDUCED MOTION */
@media (prefers-reduced-motion: reduce) {
  .grammar-page *,
  .grammar-page *::before,
  .grammar-page *::after {
    transition-duration: .01ms !important;
  }
}


.grammar-icon {
  background: var(--surface-soft);
}

.grammar-icon svg {
  fill: var(--teacher-accent);
}

.grammar-card-icon {
  background: var(--surface-soft);
  color: var(--teacher-accent);
}

.level-badge {
  background: #f5f5f7;
  color: #6e6e73;
}

.grammar-topic-preview span {
  background: var(--chip-bg);
  color: var(--text-secondary);
}

.grammar-chevron {
  border-color: var(--teacher-accent);
}

.grammar-divider {
  background: var(--teacher-accent);
}

@media (prefers-color-scheme: dark) {

  .grammar-topic--final,
  .grammar-info {
    background: #1c1c1e;
    border-color: rgba(255,255,255,.09);
  }

  .grammar-topic--final:hover {
    background: #242426;
  }

  .grammar-info-icon {
    background: #2c2c2e;
  }

}

.grammar-card:hover {
  transform: none !important;
}

.grammar-card {
  transition:
    box-shadow .2s ease,
    border-color .2s ease;
}

.grammar-card:hover {
  transform: none;
  border-color: rgba(0, 0, 0, 0.11);
  box-shadow: 0 7px 22px rgba(0, 0, 0, 0.045);
}

@media (prefers-color-scheme: dark) {
  .grammar-card:hover {
    border-color: rgba(255, 255, 255, 0.13);
    box-shadow: 0 7px 22px rgba(0, 0, 0, 0.16);
  }
}

@media (prefers-color-scheme: dark) {

  .grammar-card-icon {
    background: #2a2a2d;
    color: var(--teacher-accent);
  }

  .level-badge {
    background: #2a2a2d;
    color: #c7c7cc;
  }

}