/* ============================================================
   Egzaminki marketing sites — shared foundation.
   Tokens copied 1:1 from web/src/index.css (Vibrant Scholar) so the
   marketing sites and the product never drift apart. Section-specific
   layout lives in each site's own site.css.
   ============================================================ */

:root {
  --surface: #fbf9f8;
  --surface-dim: #dbd9d9;
  --surface-bright: #fbf9f8;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f5f3f3;
  --surface-container: #efeded;
  --surface-container-high: #eae8e7;
  --surface-container-highest: #e4e2e2;
  --on-surface: #1b1c1c;
  --on-surface-variant: #3f4a36;
  --inverse-surface: #303030;
  --inverse-on-surface: #f2f0f0;
  --outline: #6f7b64;
  --outline-variant: #becbb1;

  --primary: #2b6c00;
  --on-primary: #ffffff;
  --primary-container: #58cc02;
  --on-primary-container: #1e5000;
  --primary-fixed: #87fe45;
  --primary-fixed-dim: #6be026;
  --on-primary-fixed: #082100;
  --on-primary-fixed-variant: #1f5100;
  --inverse-primary: #6be026;

  --secondary: #006590;
  --on-secondary: #ffffff;
  --secondary-container: #2fb8ff;
  --on-secondary-container: #004666;
  --secondary-fixed: #c8e6ff;
  --secondary-fixed-dim: #88ceff;
  --on-secondary-fixed: #001e2e;
  --on-secondary-fixed-variant: #004c6e;

  --tertiary: #755b00;
  --on-tertiary: #ffffff;
  --tertiary-container: #ddad00;
  --on-tertiary-container: #574300;
  --tertiary-fixed: #ffdf92;
  --tertiary-fixed-dim: #f4bf00;
  --on-tertiary-fixed: #241a00;
  --on-tertiary-fixed-variant: #594400;

  --error: #ba1a1a;
  --on-error: #ffffff;
  --error-container: #ffdad6;
  --on-error-container: #93000a;

  --correct: #d7ffb8;
  --correct-dark: #58a700;
  --incorrect: #ffdfe0;
  --incorrect-dark: #ea2b2b;

  --accent-teal: #0d9488;
  --accent-teal-dark: #134e4a;
  --accent-purple: #9333ea;
  --accent-purple-dark: #581c87;
  --accent-red: #dc2626;
  --accent-red-dark: #7f1d1d;

  --font-display: "Nunito Sans", system-ui, sans-serif;
  --font-body: "Nunito Sans", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --r-xs: 8px;
  --r-sm: 12px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-pill: 9999px;

  --sp-base: 4px;
  --sp-xs: 8px;
  --sp-sm: 16px;
  --sp-md: 24px;
  --sp-lg: 32px;
  --sp-xl: 48px;
  --sp-2xl: 72px;
  --sp-3xl: 112px;
  --container-max: 1200px;
  --container-narrow: 760px;

  color-scheme: light;
}

/* Dark mode is an explicit in-app toggle only (matches the product: it
   never auto-follows OS color-scheme) — default is always the light,
   white-surface palette below. */
:root[data-theme="dark"] {
  color-scheme: dark;
  --surface: #121412;
  --surface-dim: #0b0d0b;
  --surface-bright: #383a35;
  --surface-container-lowest: #0a0b0a;
  --surface-container-low: #1a1c19;
  --surface-container: #1f211d;
  --surface-container-high: #292b26;
  --surface-container-highest: #343631;
  --on-surface: #e3e3de;
  --on-surface-variant: #c2cfb6;
  --inverse-surface: #e3e3de;
  --inverse-on-surface: #1f211d;
  --outline: #8b9880;
  --outline-variant: #3f483a;

  --primary: #6be026;
  --on-primary: #123b00;
  --primary-container: #1e5000;
  --on-primary-container: #9dffb0;

  --secondary: #7cd1ff;
  --on-secondary: #003449;
  --secondary-container: #004c6e;
  --on-secondary-container: #c8e6ff;

  --tertiary: #f4bf00;
  --on-tertiary: #3d2f00;
  --tertiary-container: #574300;
  --on-tertiary-container: #ffdf92;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  background: var(--surface-container-lowest);
  color: var(--on-surface);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0;
}

p {
  margin: 0;
}

a {
  color: inherit;
}

img,
svg {
  max-width: 100%;
  display: block;
}

button {
  cursor: pointer;
  font-family: inherit;
}

.material-symbols-outlined {
  font-variation-settings:
    "FILL" 0,
    "wght" 400,
    "GRAD" 0,
    "opsz" 24;
  line-height: 1;
  user-select: none;
}

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

:focus-visible {
  outline: 3px solid var(--secondary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- Scroll reveal ---------- */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- Shell / nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-md);
  padding: 14px clamp(16px, 4vw, 48px);
  background: color-mix(in srgb, var(--surface-container-lowest) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1.5px solid var(--outline-variant);
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--on-surface);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  letter-spacing: -0.01em;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
  font-weight: 700;
  font-size: 15px;
}

.nav__links a:not(.btn-primary):not(.btn-secondary) {
  text-decoration: none;
  color: var(--on-surface-variant);
  transition: color 0.15s ease;
}

.nav__links a:not(.btn-primary):not(.btn-secondary):hover {
  color: var(--on-surface);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--r-pill);
  border: 2px solid var(--outline-variant);
  background: var(--surface-container-lowest);
  color: var(--on-surface-variant);
  flex-shrink: 0;
}

.theme-toggle .material-symbols-outlined {
  font-size: 20px;
}

.nav__burger {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--r-sm);
  border: 2px solid var(--outline-variant);
  background: var(--surface-container-lowest);
  color: var(--on-surface);
  align-items: center;
  justify-content: center;
}

@media (max-width: 760px) {
  .nav__links {
    position: fixed;
    inset: 62px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    padding: var(--sp-sm) 16px calc(var(--sp-md) + 8px);
    background: var(--surface-container-lowest);
    border-bottom: 1.5px solid var(--outline-variant);
    gap: var(--sp-sm);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition:
      transform 0.2s ease,
      opacity 0.2s ease;
  }

  .nav__links.is-open {
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }

  .nav__links a {
    padding: 10px 4px;
  }

  .nav__burger {
    display: inline-flex;
  }
}

/* ---------- Buttons (tactile — mirrors web/src/App.css) ---------- */

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: 0.01em;
  text-decoration: none;
  border-radius: var(--r-sm);
  white-space: nowrap;
  transition:
    transform 0.08s ease,
    filter 0.15s ease,
    border-bottom-width 0.08s ease,
    margin-top 0.08s ease,
    background 0.15s ease;
}

.btn-primary {
  padding: 15px 26px;
  background: var(--primary);
  color: var(--on-primary);
  border: none;
  border-bottom: 4px solid var(--on-primary-fixed-variant);
  font-size: 16px;
}

.btn-primary:hover {
  filter: brightness(1.06);
}

.btn-primary:active {
  transform: translateY(4px);
  border-bottom-width: 0;
  margin-top: 4px;
}

.btn-secondary {
  padding: 13px 24px;
  background: var(--surface-container-lowest);
  color: var(--on-surface);
  border: 2px solid var(--outline-variant);
  border-bottom-width: 4px;
  font-size: 15px;
}

.btn-secondary:hover {
  background: var(--surface-container-low);
}

.btn-secondary:active {
  transform: translateY(2px);
  border-bottom-width: 2px;
}

.btn-lg {
  padding: 18px 32px;
  font-size: 17px;
}

/* ---------- Eyebrow / pill / badge ---------- */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: var(--r-pill);
  background: var(--eyebrow-bg, var(--primary-container));
  color: var(--eyebrow-fg, var(--on-primary-container));
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--r-pill);
  font-weight: 800;
  font-size: 12px;
  letter-spacing: 0.03em;
}

/* ---------- Generic layout helpers ---------- */

.wrap {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: clamp(16px, 4vw, 48px);
  padding-right: clamp(16px, 4vw, 48px);
}

.wrap-narrow {
  max-width: var(--container-narrow);
}

.icon-badge {
  --badge-size: 52px;
  width: var(--badge-size);
  height: var(--badge-size);
  border-radius: var(--r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: color-mix(in srgb, var(--badge-color, var(--primary)) 14%, var(--surface-container-lowest));
  color: var(--badge-color, var(--primary));
}

.icon-badge .material-symbols-outlined {
  font-size: calc(var(--badge-size) * 0.52);
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1.5px solid var(--outline-variant);
  padding: var(--sp-xl) clamp(16px, 4vw, 48px) var(--sp-lg);
  margin-top: var(--sp-3xl);
}

.site-footer__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--sp-lg);
}

.site-footer__brand {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 320px;
}

.site-footer__brand-row {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
}

.site-footer__tagline {
  color: var(--on-surface-variant);
  font-size: 14px;
  line-height: 1.5;
}

.site-footer__links {
  display: flex;
  gap: var(--sp-xl);
  flex-wrap: wrap;
}

.site-footer__group h3 {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--outline);
  margin-bottom: 10px;
}

.site-footer__group a {
  display: block;
  text-decoration: none;
  color: var(--on-surface-variant);
  font-weight: 600;
  font-size: 14.5px;
  padding: 5px 0;
}

.site-footer__group a:hover {
  color: var(--on-surface);
}

.site-footer__bottom {
  max-width: var(--container-max);
  margin: var(--sp-lg) auto 0;
  padding-top: var(--sp-md);
  border-top: 1px solid var(--outline-variant);
  color: var(--outline);
  font-size: 13px;
}

.logomark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--r-xs);
  background: linear-gradient(135deg, var(--primary-fixed-dim), var(--primary));
  color: #fff;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  flex-shrink: 0;
}

/* ============================================================
   Signature element: "Arkusz" — a stylized CKE exam-paper cover.
   Every landing page's hero is built around this card: the header
   bar + candidate-code grid + staple mark are the recognizable
   texture of a real Polish exam booklet, reused as brand material
   instead of a generic gradient-blob hero.
   ============================================================ */

.arkusz {
  --arkusz-accent: var(--primary);
  --arkusz-accent-dark: var(--on-primary-fixed-variant);
  position: relative;
  width: 100%;
  max-width: 380px;
  background: var(--surface-container-lowest);
  border: 2px solid var(--outline-variant);
  border-bottom: 6px solid var(--arkusz-accent-dark);
  border-radius: var(--r-lg);
  padding: 26px 26px 22px;
  box-shadow: none;
}

.arkusz::before {
  /* staple mark */
  content: "";
  position: absolute;
  top: 14px;
  left: 22px;
  width: 26px;
  height: 8px;
  border-radius: 4px;
  background: var(--outline-variant);
  transform: rotate(-8deg);
}

.arkusz__eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--outline);
  margin-bottom: 10px;
}

.arkusz__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 22px;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--on-surface);
  margin-bottom: 16px;
}

.arkusz__code {
  display: flex;
  gap: 5px;
  margin-bottom: 18px;
}

.arkusz__code span {
  width: 22px;
  height: 26px;
  border: 1.5px solid var(--outline-variant);
  border-radius: 4px;
  font-family: var(--font-mono);
}

.arkusz__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-sm);
  padding-top: 16px;
  border-top: 1.5px dashed var(--outline-variant);
}

.arkusz__subjects {
  display: flex;
  gap: 8px;
}

.arkusz__subjects .icon-badge {
  --badge-size: 34px;
}

.arkusz__stat {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 13px;
  color: var(--on-surface-variant);
  text-align: right;
  line-height: 1.35;
}

.arkusz__stat b {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  color: var(--on-surface);
}

/* ============================================================
   "Pętla nauki" — the study loop diagram. Nauka -> Egzamin ->
   Powtórz błędy feeds back into Nauka, so this is drawn as an
   honest closed loop rather than a numbered 1-2-3 list.
   ============================================================ */

.loop {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-md);
  max-width: 920px;
  margin: 0 auto;
}

.loop__connector {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.loop__connector path {
  fill: none;
  stroke: var(--outline-variant);
  stroke-width: 2;
  stroke-dasharray: 8 8;
}

.loop__connector path.is-drawn {
  stroke: var(--primary);
  stroke-dasharray: 1400;
  stroke-dashoffset: 1400;
  transition: stroke-dashoffset 1.4s cubic-bezier(0.65, 0, 0.35, 1);
}

.loop__connector path.is-drawn.is-visible {
  stroke-dashoffset: 0;
}

.loop__node {
  position: relative;
  z-index: 1;
  background: var(--surface-container-lowest);
  border: 2px solid var(--outline-variant);
  border-radius: var(--r-lg);
  padding: var(--sp-md);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.loop__node .icon-badge {
  --badge-size: 56px;
}

.loop__node h3 {
  font-size: 17px;
}

.loop__node p {
  font-size: 14px;
  color: var(--on-surface-variant);
  line-height: 1.45;
}

@media (max-width: 760px) {
  .loop {
    grid-template-columns: 1fr;
  }

  .loop__connector {
    display: none;
  }
}