/* Skoul landing — v5 notebook system (tokens from docs/design/tokens) */

:root {
  /* Light only, whatever the system theme (the site has no dark palette). */
  color-scheme: light;
  --desk-base: #F7F1DC;
  --desk-grain: rgba(34, 48, 90, 0.02);
  --paper-base: #FFFCF2;
  --paper-rule: #E9E1C6;
  --paper-margin: #EBA595;
  --ink-primary: #22305A;
  --ink-secondary: #5B6480;
  --ink-on-primary: #FFFCF2;
  --ink-edge: #141E3C;
  --highlight-base: #FFD348;
  --highlight-soft: #FFF1B8;
  --status-correct-fill: #3F9A62;
  --status-retry-fill: #D9573B;
  --status-retry-soft: #FBE9E4;
  --subject-maths: #22305A;
  --subject-reading: #3F9A62;
  --subject-writing: #FFD348;
  --ai-chip-bg: #E9EEFB;
  --e-page-edge: #E3D9BA;
  --font-display: "Mali", cursive;
  --font-ui: "Lexend", -apple-system, BlinkMacSystemFont, sans-serif;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --screen-margin: 20px;
  --screen-margin-regular: 24px;
  --rule-pitch: 32px;
  --r-s: 8px;
  --r-m: 16px;
  --r-l: 28px;
  --r-full: 9999px;
  --tap-min: 44px;
  --button-height: 56px;
  --e-page: 0 1px 0 var(--e-page-edge), 0 6px 16px rgba(34, 48, 90, 0.06);
  --e-lifted: 0 12px 28px rgba(34, 48, 90, 0.14);
  --e-button-edge: 0 3px 0 var(--ink-primary);
  --bg-ruled: repeating-linear-gradient(
    180deg,
    transparent 0,
    transparent 31px,
    var(--paper-rule) 31px,
    var(--paper-rule) 32px
  );
  --m-tap: 120ms ease-out;
  --m-move: 280ms cubic-bezier(0.34, 1.2, 0.64, 1);
  --max-width: 1120px;
  --nav-height: 56px;
  --focus-ring: 0 0 0 3px var(--highlight-base);
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --m-tap: 0ms;
    --m-move: 0ms;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  font: 400 15px/22px var(--font-ui);
  color: var(--ink-primary);
  background-color: var(--desk-base);
  background-image: radial-gradient(circle at 1px 1px, var(--desk-grain) 1px, transparent 0);
  background-size: 4px 4px;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--ink-primary);
}

a:hover {
  color: var(--ink-secondary);
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--r-s);
}

.skip-link {
  position: absolute;
  inset-inline-start: var(--space-4);
  top: -100px;
  z-index: 1000;
  padding: var(--space-3) var(--space-4);
  background: var(--ink-primary);
  color: var(--ink-on-primary);
  border-radius: var(--r-s);
  font-weight: 600;
  text-decoration: none;
}

.skip-link:focus {
  top: var(--space-4);
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--screen-margin);
}

@media (min-width: 1024px) {
  .container {
    padding-inline: var(--screen-margin-regular);
  }
}

.display-xl {
  font: 700 clamp(2rem, 5.5vw, 2.5rem) / 1.08 var(--font-display);
  margin: 0;
  text-wrap: balance;
}

.display-l {
  font: 700 clamp(1.75rem, 4vw, 2.5rem) / 1.1 var(--font-display);
  margin: 0;
  text-wrap: balance;
}

.display-m {
  font: 600 1.375rem/1.45 var(--font-display);
  margin: 0;
}

.eyebrow {
  font: 600 12px/16px var(--font-ui);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-secondary);
}

.body-l {
  font: 400 17px/26px var(--font-ui);
  color: var(--ink-secondary);
  margin: 0;
  text-wrap: pretty;
}

.body-m {
  font: 400 15px/22px var(--font-ui);
  color: var(--ink-secondary);
  margin: 0;
}

.section {
  padding-block: var(--space-12);
}

.section--tight-top {
  padding-block-start: 0;
}

.section--paper-band {
  background: var(--paper-base);
  border-block: 1px solid var(--paper-rule);
}

.page-sheet {
  position: relative;
  background-color: var(--paper-base);
  background-image: var(--bg-ruled);
  border-radius: var(--r-m);
  box-shadow: var(--e-page);
  padding: var(--space-8) var(--space-6) var(--space-8) var(--space-12);
}

.page-sheet::before {
  content: "";
  position: absolute;
  inset-block: 0;
  inset-inline-start: var(--space-6);
  width: 2px;
  background: var(--paper-margin);
  border-radius: 1px;
}

.card {
  background: var(--paper-base);
  border-radius: var(--r-m);
  box-shadow: var(--e-page);
  padding: var(--space-6);
}

.card--chip {
  background: var(--highlight-soft);
  border: 2px solid var(--ink-primary);
  box-shadow: none;
}

.highlighter {
  background-image: linear-gradient(var(--highlight-base), var(--highlight-base));
  background-repeat: no-repeat;
  background-position: 0 62%;
  background-size: 0% 42%;
}

.highlighter.is-drawn {
  animation: sk-highlight 0.9s ease-out 0.4s forwards;
}

@keyframes sk-highlight {
  to {
    background-size: 100% 42%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .highlighter.is-drawn {
    animation: none;
    background-size: 100% 42%;
  }
}

/* Nav */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--desk-base) 88%, transparent);
  border-bottom: 1px solid var(--paper-rule);
  backdrop-filter: blur(12px);
}

.site-nav__inner {
  min-height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
  padding-block: var(--space-3);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--ink-primary);
  min-height: var(--tap-min);
}

.brand__name {
  font: 700 1.625rem/1 var(--font-display);
}

.nav-links {
  display: none;
  align-items: center;
  gap: var(--space-1);
  flex-wrap: wrap;
}

.nav-links a {
  min-height: var(--tap-min);
  padding-inline: var(--space-3);
  display: inline-flex;
  align-items: center;
  font: 500 13px/18px var(--font-ui);
  text-decoration: none;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-inline-start: auto;
}

.btn {
  min-height: var(--button-height);
  padding-inline: var(--space-6);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  border-radius: var(--r-m);
  font: 600 16px/20px var(--font-ui);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform var(--m-tap), box-shadow var(--m-tap);
}

.btn--primary {
  background: var(--ink-primary);
  color: var(--ink-on-primary);
  box-shadow: var(--e-button-edge);
}

.btn--primary:active {
  transform: translateY(3px);
  box-shadow: none;
}

.btn--secondary {
  background: var(--paper-base);
  color: var(--ink-primary);
  border: 2px solid var(--ink-primary);
}

.btn--small {
  min-height: var(--tap-min);
  padding-inline: var(--space-4);
  font-size: 14px;
}

.btn--nav-cta {
  min-height: var(--tap-min);
  padding-inline: var(--space-4);
  font-size: 14px;
  box-shadow: var(--e-button-edge);
}

/* Language picker: the four languages side by side, the current one marked. */
.lang-picker {
  display: flex;
  align-items: center;
  gap: 2px;
}

.lang-picker a {
  min-width: 36px;
  min-height: var(--tap-min);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-s);
  color: var(--ink-secondary);
  font: 600 13px/18px var(--font-ui);
  text-decoration: none;
}

.lang-picker a:hover {
  color: var(--ink-primary);
  background: var(--highlight-soft);
}

.lang-picker a[aria-current] {
  color: var(--ink-primary);
  box-shadow: inset 0 -3px 0 var(--highlight-base);
}

/* Home: in the header from tablet width, in the menu drawer on phones. */
.lang-picker--header {
  display: none;
}

.lang-picker--drawer {
  margin-top: var(--space-2);
  padding-top: var(--space-2);
  border-top: 1px solid var(--paper-rule);
}

@media (min-width: 640px) {
  .lang-picker--header {
    display: flex;
  }
  .lang-picker--drawer {
    display: none;
  }
}

.menu-toggle {
  min-height: var(--tap-min);
  min-width: var(--tap-min);
  border: 1.5px solid var(--paper-rule);
  border-radius: var(--r-s);
  background: var(--paper-base);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink-primary);
  border-radius: 1px;
}

.mobile-drawer {
  display: none;
  flex-direction: column;
  gap: var(--space-1);
  padding-block: var(--space-4);
  border-top: 1px solid var(--paper-rule);
}

.mobile-drawer.is-open {
  display: flex;
}

.mobile-drawer a {
  min-height: var(--tap-min);
  padding-inline: var(--space-2);
  display: flex;
  align-items: center;
  text-decoration: none;
  font-weight: 500;
}

@media (min-width: 1024px) {
  .nav-links {
    display: flex;
  }
  .menu-toggle {
    display: none;
  }
  .mobile-drawer {
    display: none !important;
  }
}

/* Hero */
.hero {
  padding-block: var(--space-12) 5rem;
}

.hero__grid {
  display: grid;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 768px) {
  .hero__grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
}

.hero__badges-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: 14px;
  color: var(--ink-secondary);
}

.hero__badges-row a,
.hero__badges-row span {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: var(--tap-min);
  text-decoration: none;
  color: inherit;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.hero__visual {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__notebook-bg {
  position: absolute;
  inset: 2.5rem 4% 0;
  transform: rotate(-2deg);
  border-radius: var(--r-m);
  background-color: var(--paper-base);
  background-image: var(--bg-ruled);
  box-shadow: var(--e-page);
}

.hero__notebook-bg::before {
  content: "";
  position: absolute;
  inset-block: 0;
  inset-inline-start: var(--space-8);
  width: 2px;
  background: var(--paper-margin);
}

.hero__mascot {
  position: absolute;
  inset-inline-start: 0;
  top: -1rem;
  z-index: 2;
  transform: rotate(-6deg);
  width: 96px;
  height: auto;
}

.hero__phone {
  position: relative;
  z-index: 1;
  width: min(100%, 280px);
  border-radius: var(--r-l);
  border: 3px solid var(--ink-primary);
  background: var(--desk-base);
  box-shadow: var(--e-lifted);
  overflow: hidden;
}

.hero__phone-inner {
  padding: var(--space-6) var(--space-4) var(--space-8);
}

.icon-check {
  color: var(--status-correct-fill);
  flex-shrink: 0;
}

/* How */
.how-grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.how-step__num {
  font: 700 2.5rem/32px var(--font-display);
  color: var(--ink-secondary);
}

/* Ages table */
.ages-table-wrap {
  overflow-x: auto;
}

.ages-table {
  width: 100%;
  min-width: 560px;
  background: var(--paper-base);
  border-radius: var(--r-m);
  box-shadow: var(--e-page);
  border-collapse: collapse;
  overflow: hidden;
}

.ages-table th,
.ages-table td {
  padding: var(--space-4);
  text-align: start;
  vertical-align: top;
  border-bottom: 1px solid var(--paper-rule);
  font-size: 15px;
  line-height: 22px;
}

.ages-table thead th {
  font: 700 22px/28px var(--font-display);
  border-bottom: 2px solid var(--ink-primary);
}

.ages-table .row-label {
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.subject-dot {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  flex-shrink: 0;
}

.subject-dot--maths {
  background: var(--subject-maths);
}

.subject-dot--reading {
  background: var(--subject-reading);
}

.subject-dot--writing {
  background: var(--subject-writing);
}

/* Homework */
.homework-grid {
  display: grid;
  gap: var(--space-12);
  align-items: start;
}

@media (min-width: 768px) {
  .homework-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
}

.homework-modes {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.homework-mode {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  padding: var(--space-4);
  border-radius: var(--r-m);
  background: var(--desk-base);
}

.homework-mode__label {
  font: 700 18px/24px var(--font-display);
  min-width: 6rem;
}

/* Mistake box */
.box-grid {
  display: grid;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 768px) {
  .box-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
}

.leitner {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: var(--space-2);
  align-items: end;
}

.leitner__slot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  min-width: 0;
}

.leitner__box {
  width: 100%;
  max-width: 72px;
  border-radius: var(--r-s) var(--r-s) 4px 4px;
  background: var(--status-retry-soft);
  border: 2px solid var(--status-retry-fill);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: var(--space-2);
  font: 700 22px/1 var(--font-display);
}

.leitner__label {
  font-size: 12px;
  color: var(--ink-secondary);
  text-align: center;
}

/* Privacy band */
.privacy-band {
  background: var(--ink-primary);
  color: var(--ink-on-primary);
  padding-block: var(--space-12);
}

.privacy-band a {
  color: var(--ink-on-primary);
}

.privacy-band .body-m,
.privacy-band .body-l {
  color: color-mix(in srgb, var(--ink-on-primary) 92%, transparent);
}

.privacy-cards {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.privacy-card {
  padding: var(--space-6);
  border-radius: var(--r-m);
  background: color-mix(in srgb, var(--ink-on-primary) 8%, transparent);
}

.privacy-card .eyebrow {
  color: var(--highlight-base);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

/* Pricing */
.pricing-head {
  text-align: center;
  max-width: 24ch;
  margin-inline: auto;
}

.pricing-grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  max-width: 820px;
  margin-inline: auto;
  width: 100%;
}

.pricing-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.pricing-list li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}

.pricing-note {
  text-align: center;
  max-width: 60ch;
  margin-inline: auto;
  font-size: 13px;
  line-height: 18px;
  color: var(--ink-secondary);
}

/* FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 820px;
  margin-inline: auto;
}

.faq-item {
  padding: var(--space-4) var(--space-6);
}

.faq-item h3 {
  margin: 0 0 var(--space-2);
  font: 600 16px/22px var(--font-ui);
}

/* Download */
.download-block {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.download-mascot {
  width: 120px;
  height: auto;
}

.store-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
}

/* Footer */
.site-footer {
  padding-block: var(--space-6) var(--space-12);
  border-top: 1px solid var(--paper-rule);
  font-size: 13px;
  color: var(--ink-secondary);
}

.site-footer__row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.site-footer__links a {
  min-height: var(--tap-min);
  padding-inline: var(--space-3);
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: var(--ink-secondary);
}

/* Newsletter */
.newsletter {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid var(--paper-rule);
  max-width: 640px;
  margin-inline: auto;
  width: 100%;
}

.newsletter-form {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.newsletter-input {
  flex: 1 1 200px;
  min-height: var(--tap-min);
  padding-inline: var(--space-4);
  border-radius: var(--r-s);
  border: 1.5px solid var(--paper-rule);
  background: var(--desk-base);
  font: inherit;
  color: var(--ink-primary);
}

.newsletter-privacy {
  margin-top: var(--space-3);
  font-size: 13px;
  color: var(--ink-secondary);
}

/* Toast */
.toast {
  position: fixed;
  inset-inline-end: var(--space-4);
  bottom: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--ink-primary);
  color: var(--ink-on-primary);
  border-radius: var(--r-m);
  font-size: 14px;
  z-index: 200;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--m-move), transform var(--m-move);
  pointer-events: none;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Legal pages */
.legal-shell {
  min-height: 100vh;
  padding: var(--space-12) var(--screen-margin);
}

.legal-card {
  max-width: 900px;
  margin-inline: auto;
  padding: var(--space-8);
}

.legal-card h1 {
  font: 700 2rem/1.15 var(--font-display);
  margin: 0 0 var(--space-6);
}

.legal-card h2 {
  font: 600 1.25rem/1.3 var(--font-display);
  margin: var(--space-8) 0 var(--space-4);
}

.legal-card h3 {
  font: 600 1rem/1.3 var(--font-ui);
  margin: var(--space-6) 0 var(--space-3);
}

.legal-card p,
.legal-card li {
  color: var(--ink-secondary);
  line-height: 1.7;
}

.legal-card ul,
.legal-card ol {
  padding-inline-start: 1.25rem;
}

.legal-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  margin-bottom: var(--space-6);
}

.legal-back {
  display: inline-flex;
  align-items: center;
  min-height: var(--tap-min);
  font-weight: 600;
  text-decoration: none;
}

.legal-nav {
  margin-bottom: var(--space-8);
}

@media (max-width: 389px) {
  .hero__actions .btn {
    width: 100%;
  }
}