/* =====================================================================
   Matte Direkt – main.css
   Source: PREWORK/Drafts/w1/version3/style.css
   Adapted for SilverStripe theme: themes/mattedirekt
   ===================================================================== */

/* ── Tokens ── */
:root {
  --red: #D42027;
  --red-soft: rgba(212, 32, 39, .08);
  --red-glow: rgba(212, 32, 39, .35);
  --amber: #F2B705;
  --amber-soft: rgba(242, 183, 5, .10);
  --sky: #6CB4DC;
  --sky-soft: rgba(108, 180, 220, .10);
  --green: #54B862;
  --green-soft: rgba(84, 184, 98, .10);

  --bg: #F7F8FC;
  --surface: #FFFFFF;
  --text: #1A1D23;
  --muted: #6B7280;
  --border: #E2E5EB;

  --hero-from: #4DA4D8;
  --hero-to: #2B7CB5;

  --r-sm: .5rem;
  --r-md: .875rem;
  --r-lg: 1.25rem;
  --r-xl: 1.5rem;

  --shadow-xs: 0 1px 3px rgba(0,0,0,.04);
  --shadow-sm: 0 2px 8px rgba(0,0,0,.06);
  --shadow-md: 0 8px 24px rgba(0,0,0,.08);
  --shadow-lg: 0 16px 48px rgba(0,0,0,.12);
  --shadow-lift: 0 20px 50px rgba(0,0,0,.14);

  --ease: cubic-bezier(.22,1,.36,1);
  --font: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font);
  font-size: 1rem;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ── Layout ── */
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 5.5rem 0; }

.section__head { text-align: center; max-width: 600px; margin: 0 auto 3.2rem; }
.section__label {
  display: inline-block; font-size: .72rem; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase; color: var(--red);
  margin-bottom: .5rem;
}
.section__head h2 {
  font-size: clamp(1.8rem, 3.2vw, 2.5rem); font-weight: 800;
  margin-bottom: .55rem; letter-spacing: -.01em;
}
.section__head p { color: var(--muted); font-size: 1.05rem; }

/* ══════════════════════════════════════════════
   NAVBAR
   ══════════════════════════════════════════════ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  backdrop-filter: blur(16px) saturate(1.4);
  background: rgba(255,255,255,.85);
  border-bottom: 1px solid var(--border);
  transition: background .3s var(--ease), box-shadow .3s var(--ease);
}
.nav.scrolled {
  background: rgba(255,255,255,.95);
  box-shadow: 0 4px 24px rgba(0,0,0,.06);
}
.nav__inner {
  display: flex; align-items: center; justify-content: space-between; height: 64px;
}
.nav__brand { display: flex; align-items: center; }
.nav__logo { height: 32px; width: auto; }
.nav__links { display: flex; gap: .35rem; align-items: center; }
.nav__links a {
  font-size: .88rem; font-weight: 500; color: var(--muted);
  padding: .4rem .85rem; border-radius: var(--r-sm);
  transition: color .2s, background .2s;
}
.nav__links a:hover { color: var(--text); background: rgba(0,0,0,.04); }
.nav__cta {
  background: var(--red) !important; color: #fff !important;
  font-weight: 600 !important; padding: .45rem 1.15rem !important;
  border-radius: var(--r-sm) !important;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease) !important;
}
.nav__cta:hover { transform: translateY(-1px); box-shadow: 0 6px 18px var(--red-glow); }
.nav__burger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: .4rem;
}
.nav__burger span {
  display: block; width: 22px; height: 2px;
  background: var(--text); border-radius: 2px; transition: .25s var(--ease);
}

/* ══════════════════════════════════════════════
   HERO
   ══════════════════════════════════════════════ */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  background:
    radial-gradient(ellipse 65% 55% at 8% 42%, rgba(242, 183, 5, .35) 0%, transparent 50%),
    radial-gradient(ellipse 55% 48% at 92% 28%, rgba(255, 255, 255, .2) 0%, transparent 48%),
    radial-gradient(ellipse 50% 52% at 70% 88%, rgba(84, 184, 98, .28) 0%, transparent 45%),
    linear-gradient(160deg, var(--hero-from) 0%, var(--hero-to) 100%);
  padding-top: 64px; overflow: hidden;
}
.hero__wave {
  position: absolute; bottom: -2px; left: 0; right: 0; height: 120px;
  background: var(--bg);
  clip-path: ellipse(60% 100% at 50% 100%);
  z-index: 3;
}
.hero__layout {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center;
  padding: 5rem 0 7rem;
}
.hero__copy { color: #fff; }
.hero__chip {
  display: inline-flex; align-items: center; gap: .5rem;
  background: rgba(255,255,255,.15);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.2);
  padding: .35rem 1rem; border-radius: 2rem;
  font-size: .82rem; font-weight: 600; margin-bottom: 1.5rem;
}
.hero__chip-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--amber);
  box-shadow: 0 0 10px var(--amber);
  animation: dot-pulse 2s ease infinite;
}
@keyframes dot-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(1.5); }
}
.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.8rem); font-weight: 800;
  line-height: 1.08; margin-bottom: 1.3rem; letter-spacing: -.02em;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--amber), #FFD766);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero__desc {
  font-size: 1.1rem; color: rgba(255,255,255,.72); line-height: 1.75;
  max-width: 460px; margin-bottom: 2rem;
}
.hero__actions { display: flex; gap: .75rem; flex-wrap: wrap; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .85rem 1.6rem; border-radius: var(--r-sm);
  font-weight: 650; font-size: .95rem; cursor: pointer; border: none;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn--primary { background: var(--red); color: #fff; }
.btn--primary:hover { box-shadow: 0 8px 24px var(--red-glow); }
.btn--ghost {
  background: rgba(255,255,255,.18); color: #fff;
  border: 1px solid rgba(255,255,255,.3);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
.btn--ghost:hover { background: rgba(255,255,255,.28); }
.btn--lg { padding: 1rem 2rem; font-size: 1.05rem; }

/* Hero books – 9-book stack */
.hero__showcase { display: flex; justify-content: center; align-items: flex-end; }
.hero__book-stack {
  position: relative;
  width: 560px;
  height: 330px;
  flex-shrink: 0;
  perspective: 1200px;
}

.hero__book {
  position: absolute;
  bottom: 0;
  border-radius: var(--r-md);
  box-shadow: 0 12px 30px rgba(0,0,0,.22);
  object-fit: cover;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), opacity .3s;
}
.hero__book:hover {
  transform: translateY(-10px) scale(1.06) rotateY(0deg) !important;
  z-index: 20 !important;
  opacity: 1 !important;
  box-shadow: 0 28px 60px rgba(0,0,0,.35);
}

/* Startläge för deal-animation – alla böcker staplade */
.hero__book.book-pre-anim {
  opacity: 0 !important;
  transform: translateX(130px) translateY(10px) rotateY(-18deg) scale(0.74) !important;
  transition: none !important;
}

/* ── Bakgrundsböcker 1–6 (show-off, tonar bakåt åt vänster) ── */
.hero__book--bg { filter: brightness(.88); pointer-events: none; cursor: default; }

.hero__book--b1 { width: 62px;  left: 0px;   z-index: 1; opacity: .16; transform: rotateY(20deg); }
.hero__book--b2 { width: 68px;  left: 36px;  z-index: 2; opacity: .22; transform: rotateY(17deg); }
.hero__book--b3 { width: 76px;  left: 76px;  z-index: 3; opacity: .30; transform: rotateY(14deg); }
.hero__book--b4 { width: 86px;  left: 122px; z-index: 4; opacity: .38; transform: rotateY(11deg); }
.hero__book--b5 { width: 96px;  left: 174px; z-index: 5; opacity: .48; transform: rotateY(8deg);  }
.hero__book--b6 { width: 110px; left: 234px; z-index: 6; opacity: .62; transform: rotateY(6deg);  }

/* ── Fokusböcker 7–9 ── */
.hero__book--f7 { width: 148px; left: 306px; z-index: 7; opacity: .84; transform: translateY(-6px)  rotateY(5deg); }
.hero__book--f8 { width: 170px; left: 362px; z-index: 8; opacity: .93; transform: translateY(-14px) rotateY(-2deg); }
.hero__book--f9 { width: 192px; left: 392px; z-index: 9; opacity: 1;   transform: translateY(-22px) rotateY(-6deg); }


/* ══════════════════════════════════════════════
   STATS RIBBON
   ══════════════════════════════════════════════ */
.ribbon {
  position: relative; z-index: 10;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 2.2rem 0;
  box-shadow: var(--shadow-xs);
}
.ribbon__inner { display: flex; justify-content: space-around; flex-wrap: wrap; gap: 1.5rem; }
.ribbon__stat { text-align: center; }
.ribbon__stat strong {
  display: block; font-size: 2.4rem; font-weight: 800;
  background: linear-gradient(135deg, var(--hero-from), var(--hero-to));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.ribbon__stat span { font-size: .85rem; color: var(--muted); font-weight: 500; }

/* ══════════════════════════════════════════════
   USP CARDS
   ══════════════════════════════════════════════ */
.usp { background: var(--bg); }
.usp__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }

.usp-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 2rem;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.usp-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lift); }
.usp-card__icon {
  width: 48px; height: 48px; border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1rem;
}
.usp-card__icon svg { width: 22px; height: 22px; }
.usp-card__icon--amber { background: var(--amber-soft); color: #C99400; }
.usp-card__icon--blue  { background: var(--sky-soft);   color: #3A85B0; }
.usp-card__icon--red   { background: var(--red-soft);   color: var(--red); }
.usp-card__icon--green { background: var(--green-soft); color: #2E8B3E; }
.usp-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: .3rem; }
.usp-card p  { font-size: .9rem; color: var(--muted); line-height: 1.65; }

/* ══════════════════════════════════════════════
   SERIES CARDS
   ══════════════════════════════════════════════ */
.serier { background: var(--surface); }
.serier__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }

.serie {
  position: relative; border-radius: var(--r-xl); overflow: hidden;
  background: var(--bg); border: 1px solid var(--border);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.serie:hover { transform: translateY(-6px); box-shadow: var(--shadow-lift); }
.serie__bar { height: 5px; }
.serie__body { padding: 2rem; text-align: center; }
.serie__tag {
  display: inline-block; font-size: .72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .08em; margin-bottom: .5rem;
}
.serie__body h3 { font-size: 1.3rem; font-weight: 800; margin-bottom: .55rem; }
.serie__body p { font-size: .9rem; color: var(--muted); line-height: 1.65; margin-bottom: 1.2rem; }
.serie__cover {
  width: 130px; margin: 0 auto 1.1rem; border-radius: var(--r-sm);
  box-shadow: var(--shadow-md); transition: transform .3s var(--ease);
}
.serie:hover .serie__cover { transform: scale(1.06) rotate(-1deg); }
.serie__link {
  display: inline-flex; align-items: center; gap: .3rem;
  font-weight: 600; font-size: .88rem;
  transition: gap .25s var(--ease);
}
.serie__link:hover { gap: .6rem; }
.serie__link svg { transition: transform .2s var(--ease); }
.serie__link:hover svg { transform: translateX(3px); }

.serie--green .serie__bar { background: var(--green); }
.serie--green .serie__tag,
.serie--green .serie__link { color: #2E8B3E; }

.serie--blue .serie__bar { background: var(--sky); }
.serie--blue .serie__tag,
.serie--blue .serie__link { color: #3A85B0; }

.serie--red { border: 2px solid var(--red); }
.serie--red .serie__bar { background: var(--red); }
.serie--red .serie__tag,
.serie--red .serie__link { color: var(--red); }

.serie__glow {
  position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(ellipse at 50% 0%, rgba(212,32,39,.05), transparent 60%);
}

/* ══════════════════════════════════════════════
   QUOTE
   ══════════════════════════════════════════════ */
.quote { background: var(--bg); }
.quote__card {
  position: relative; max-width: 700px; margin: 0 auto; text-align: center;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-xl); padding: 3rem 2.5rem;
  box-shadow: var(--shadow-sm);
}
.quote__mark { width: 44px; height: 44px; margin: 0 auto .8rem; color: var(--sky); opacity: .2; }
.quote__card blockquote {
  font-size: clamp(1.15rem, 2vw, 1.45rem); font-weight: 600; line-height: 1.5;
  margin-bottom: 1.5rem; color: var(--text);
}
.quote__author { display: flex; align-items: center; justify-content: center; gap: .8rem; }
.quote__avatar {
  width: 42px; height: 42px; border-radius: 50%;
  background: linear-gradient(135deg, var(--hero-from), var(--hero-to));
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: .8rem; color: #fff;
}
.quote__author strong { display: block; font-size: .9rem; }
.quote__author span { font-size: .8rem; color: var(--muted); }

/* ══════════════════════════════════════════════
   RESOURCES
   ══════════════════════════════════════════════ */
.resurser { background: var(--surface); }
.resurser__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }

.res-card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 1.8rem; text-align: center;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.res-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.res-card__icon {
  width: 48px; height: 48px; margin: 0 auto .9rem;
  border-radius: var(--r-md); background: var(--red-soft);
  display: flex; align-items: center; justify-content: center; color: var(--red);
}
.res-card__icon svg { width: 22px; height: 22px; }
.res-card h4 { font-weight: 700; margin-bottom: .2rem; }
.res-card p { font-size: .85rem; color: var(--muted); }

/* ══════════════════════════════════════════════
   CTA BANNER
   ══════════════════════════════════════════════ */
.cta-banner {
  position: relative; overflow: hidden;
  background: linear-gradient(150deg, var(--hero-from), var(--hero-to));
  padding: 5rem 0; text-align: center; color: #fff;
}
.cta-banner h2 { font-size: clamp(1.8rem, 3vw, 2.4rem); font-weight: 800; margin-bottom: .7rem; }
.cta-banner p { color: rgba(255,255,255,.7); font-size: 1.05rem; max-width: 480px; margin: 0 auto 2rem; }

/* ══════════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════════ */
.footer { background: #111827; color: rgba(255,255,255,.5); padding: 3.5rem 0 1.5rem; }
.footer__top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2rem; margin-bottom: 2.5rem; }
.footer__brand { max-width: 280px; }
.footer__logo { height: 26px; width: auto; margin-bottom: .8rem; filter: brightness(0) invert(1); }
.footer__brand p { font-size: .85rem; line-height: 1.65; }
.footer__col h4 {
  color: rgba(255,255,255,.8); font-weight: 600; font-size: .78rem;
  text-transform: uppercase; letter-spacing: .06em; margin-bottom: .8rem;
}
.footer__col li { margin-bottom: .4rem; }
.footer__col a { font-size: .85rem; transition: color .2s; }
.footer__col a:hover { color: #fff; }
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,.08); padding-top: 1.2rem;
  display: flex; justify-content: space-between; font-size: .78rem;
}

/* ══════════════════════════════════════════════
   SCROLL REVEAL
   ══════════════════════════════════════════════ */
.rv {
  opacity: 0; transform: translateY(30px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}
.rv.visible { opacity: 1; transform: translateY(0); }

/* ══════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .hero__layout { grid-template-columns: 1fr; text-align: center; }
  .hero__desc { max-width: 100%; margin-left: auto; margin-right: auto; }
  .hero__actions { justify-content: center; }
  .hero__showcase { margin-top: 2.5rem; }
  .usp__grid { grid-template-columns: 1fr 1fr; }
  .serier__grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
  .resurser__grid { grid-template-columns: 1fr 1fr; }
  .footer__top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .nav__links {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    background: rgba(255,255,255,.97);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    flex-direction: column; padding: 1.2rem;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
  }
  .nav__links.open { display: flex; }
  .nav__burger { display: flex; }
  .hero h1 { font-size: 2.1rem; }
  .hero__book { width: 140px; }
  .usp__grid, .resurser__grid { grid-template-columns: 1fr; }
  .section__head h2 { font-size: 1.65rem; }
  .quote__card blockquote { font-size: 1.1rem; }
  .footer__top { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; gap: .4rem; text-align: center; }
  .ribbon__inner { flex-direction: column; align-items: center; }
}

/* ══════════════════════════════════════════════
   404 ERROR PAGE
   ══════════════════════════════════════════════ */
.error-page {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 0 5rem;
  overflow: hidden;
  background:
    radial-gradient(ellipse 50% 40% at 20% 30%, rgba(108,180,220,.12) 0%, transparent 50%),
    radial-gradient(ellipse 40% 50% at 80% 70%, rgba(212,32,39,.06) 0%, transparent 50%),
    var(--bg);
}

.error-page__inner {
  text-align: center;
  position: relative;
  z-index: 2;
}

/* ── Floating math symbols ── */
.error-page__symbols {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.error-page__sym {
  position: absolute;
  font-size: clamp(1.4rem, 3vw, 2.4rem);
  font-weight: 700;
  opacity: 0;
  animation: sym-float 12s ease-in-out infinite;
  color: var(--muted);
}

.error-page__sym--1  { left: 5%;  top: 15%; animation-delay: 0s;    color: var(--red);   }
.error-page__sym--2  { left: 88%; top: 20%; animation-delay: 1.1s;  color: var(--sky);   }
.error-page__sym--3  { left: 15%; top: 70%; animation-delay: 2.3s;  color: var(--amber); }
.error-page__sym--4  { left: 82%; top: 65%; animation-delay: 3.5s;  color: var(--green); }
.error-page__sym--5  { left: 45%; top: 8%;  animation-delay: 4.2s;  color: var(--red);   }
.error-page__sym--6  { left: 70%; top: 82%; animation-delay: 5.4s;  color: var(--sky);   }
.error-page__sym--7  { left: 25%; top: 88%; animation-delay: 6.6s;  color: var(--amber); }
.error-page__sym--8  { left: 60%; top: 12%; animation-delay: 7.8s;  color: var(--green); }
.error-page__sym--9  { left: 8%;  top: 42%; animation-delay: 8.5s;  color: var(--sky);   }
.error-page__sym--10 { left: 92%; top: 45%; animation-delay: 9.7s;  color: var(--red);   }

@keyframes sym-float {
  0%   { opacity: 0;   transform: translateY(30px) rotate(0deg)   scale(.7); }
  15%  { opacity: .18; }
  50%  { opacity: .25; transform: translateY(-20px) rotate(180deg) scale(1);  }
  85%  { opacity: .18; }
  100% { opacity: 0;   transform: translateY(30px) rotate(360deg) scale(.7); }
}

/* ── 404 number ── */
.error-page__hero {
  margin-bottom: 1.8rem;
}

.error-page__code {
  display: inline-flex;
  align-items: center;
  gap: .2rem;
  user-select: none;
}

.error-page__digit {
  font-size: clamp(6rem, 18vw, 12rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.04em;
  background: linear-gradient(160deg, var(--hero-from) 0%, var(--hero-to) 60%, var(--red) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  animation: digit-breathe 3s ease-in-out infinite;
}

.error-page__digit--zero {
  position: relative;
}

.error-page__zero-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 55%;
  height: 55%;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  border: 3px solid var(--red);
  opacity: 0;
  animation: ring-pulse 2.5s ease-out infinite;
}

@keyframes digit-breathe {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.03); }
}

@keyframes ring-pulse {
  0%   { opacity: .5; width: 30%; height: 30%; }
  100% { opacity: 0;  width: 90%; height: 90%; }
}

/* ── Math equation ── */
.error-page__equation {
  margin-bottom: 2rem;
  font-size: clamp(.85rem, 1.5vw, 1.05rem);
  line-height: 2;
  color: var(--muted);
}

.error-page__equation code {
  font-family: 'Courier New', Courier, monospace;
  background: rgba(0,0,0,.04);
  padding: .15em .5em;
  border-radius: var(--r-sm);
  font-size: .95em;
}

.error-page__answer {
  color: var(--red) !important;
  font-weight: 600;
}

.error-page__answer em {
  font-style: italic;
}

/* ── Text ── */
.error-page__title {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  margin-bottom: .6rem;
  letter-spacing: -.01em;
}

.error-page__desc {
  font-size: clamp(.95rem, 1.5vw, 1.1rem);
  color: var(--muted);
  max-width: 500px;
  margin: 0 auto 2.2rem;
  line-height: 1.7;
}

/* ── Actions ── */
.error-page__actions {
  margin-bottom: 3rem;
}

.error-page__btn svg {
  flex-shrink: 0;
}

/* ── Fun fact card ── */
.error-page__funfact {
  display: inline-block;
  max-width: 460px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 1.4rem 1.8rem;
  box-shadow: var(--shadow-sm);
  text-align: left;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}

.error-page__funfact:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.error-page__funfact-label {
  display: block;
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--amber);
  margin-bottom: .4rem;
}

.error-page__funfact-text {
  font-size: .92rem;
  color: var(--text);
  line-height: 1.6;
  font-weight: 500;
}

/* ── 404 responsive ── */
@media (max-width: 640px) {
  .error-page { padding-top: 90px; }
  .error-page__equation code { font-size: .8rem; }
  .error-page__sym { font-size: 1.2rem; }
  .error-page__funfact { padding: 1.1rem 1.3rem; }
}