/* ============================================================
   MatekStream Landing — Univerzális, 8 tankönyves rácssal
   ============================================================ */

:root {
  --ink: #0f1419;
  --ink-soft: #2a2f36;
  --ink-muted: #5a6068;
  --paper: #faf7f2;
  --paper-warm: #f3ede2;
  --line: #1a1f26;

  --accent: #ff5b35;
  --accent-deep: #d63d18;
  --accent-soft: #ffe8df;

  --highlight: #fff066;

  --success: #1f7a3d;

  --maxw: 1100px;
  --maxw-wide: 1240px;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);

  --font-display: "Fraunces", "Times New Roman", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ---------- Reset / base ---------- */

html, body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

html {
  scroll-behavior: smooth;
}

/* Quarto title block elrejtése */
#title-block-header,
header#title-block-header,
.quarto-title-block {
  display: none !important;
}

main.content,
#quarto-content,
.page-columns,
.column-body,
.column-page,
.column-screen {
  max-width: none !important;
  padding: 0 !important;
  margin: 0 !important;
  grid-template-columns: 1fr !important;
}

body > #quarto-document-content,
#quarto-document-content {
  padding: 0 !important;
  margin: 0 !important;
}

/* ---------- Tipográfia ---------- */

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--ink);
  margin: 0 0 0.5em 0;
}

/* Quarto/Bootstrap esetenként felülírja a h1 színét — kényszerítjük */
.hero h1.hero-title,
h1.hero-title {
  color: var(--ink) !important;
}

p { margin: 0 0 1rem 0; }

a {
  color: var(--accent-deep);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

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

.accent {
  font-style: italic;
  background: var(--highlight);
  /*linear-gradient(180deg, transparent 60%, var(--highlight) 60%, var(--highlight) 92%, transparent 92%);*/
  padding: 0 0.1em;
}

/* ---------- Szekciók ---------- */

.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(3.5rem, 9vw, 6.5rem) var(--gutter);
}

.section-title {
  font-size: clamp(1.9rem, 4.5vw, 3rem);
  margin-bottom: 2.5rem;
  max-width: 28ch;
}

/* ---------- HERO ---------- */

.hero {
  position: relative;
  max-width: none;
  padding: clamp(3rem, 8vw, 6rem) var(--gutter) clamp(4rem, 10vw, 7rem);
  background:
    radial-gradient(ellipse at top right, var(--accent-soft) 0%, transparent 60%),
    radial-gradient(ellipse at bottom left, #fff5d6 0%, transparent 50%),
    var(--paper);
  border-bottom: 1px solid rgba(15, 20, 25, 0.08);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(15, 20, 25, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15, 20, 25, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
          mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

.hero > * {
  position: relative;
  max-width: var(--maxw);
  margin-left: auto;
  margin-right: auto;
}

/* A hero belső blokkjai balra igazodjanak, ne max-width-margin-auto módra */
.hero-eyebrow,
.hero-title,
.hero-lead,
.hero-cta,
.hero-badges {
  margin-left: 0;
  margin-right: auto;
}

.hero-eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-deep);
  background: white;
  padding: 0.5rem 1rem;
  border: 1px solid rgba(214, 61, 24, 0.3);
  border-radius: 999px;
  margin-bottom: 2rem;
}

.hero-title {
  font-size: clamp(2.4rem, 6.5vw, 5rem);
  font-weight: 900;
  line-height: 0.98;
  margin: 0 0 1.5rem 0;
  max-width: 18ch;
}

.hero-lead {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  line-height: 1.45;
  color: var(--ink-soft);
  max-width: 38ch;
  margin-bottom: 2.5rem;
}

.hero-lead strong { font-weight: 600; color: var(--ink); }

.hero-cta { margin-bottom: 2rem; }

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1rem;
}

.badge {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--ink-soft);
  background: white;
  border: 1px solid rgba(15, 20, 25, 0.12);
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  text-decoration: none;
  pointer-events: none;
}

/* ---------- Gombok ---------- */

.btn-primary {
  display: inline-block;
  background: var(--ink);
  color: var(--paper) !important;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.05rem;
  padding: 1rem 2rem;
  border-radius: 8px;
  text-decoration: none !important;
  border: 2px solid var(--ink);
  box-shadow: 6px 6px 0 var(--accent);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn-primary:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--accent);
  color: var(--paper) !important;
}

.btn-primary:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--accent);
}

.btn-large { font-size: 1.15rem; padding: 1.15rem 2.4rem; }

/* ---------- Probléma szekció ---------- */

.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}

.problem-card {
  background: white;
  border: 1px solid rgba(15, 20, 25, 0.08);
  border-radius: 12px;
  padding: 1.75rem;
  position: relative;
}

.problem-card::before {
  content: "";
  position: absolute;
  top: 1.25rem;
  left: 1.75rem;
  width: 24px;
  height: 2px;
  background: var(--accent);
}

.problem-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  font-style: italic;
  line-height: 1.3;
  margin: 1.25rem 0 0.75rem 0;
}

.problem-card p {
  font-size: 0.97rem;
  color: var(--ink-muted);
  margin: 0;
}

/* ---------- Megoldás szekció ---------- */

.section-solution {
  background: var(--ink);
  color: var(--paper);
  max-width: none;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.section-solution > * {
  max-width: var(--maxw);
  margin-left: auto;
  margin-right: auto;
}

.section-solution .section-title,
.section-solution h2.section-title,
.section-solution h3 { color: var(--paper) !important; }

.section-solution .accent,
.section-solution h2 .accent,
.section-solution h3 .accent { color: var(--ink) !important; }

.solution-eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem 2.5rem;
  margin-top: 3rem;
}

.solution-item h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
}

.solution-item h3::before {
  content: "→";
  color: var(--accent);
  font-family: var(--font-body);
  font-weight: 700;
}

.solution-item p {
  color: rgba(250, 247, 242, 0.75);
  font-size: 0.97rem;
  margin: 0;
}

/* ---------- Audience ---------- */

.audience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.audience-card {
  background: var(--paper-warm);
  border-radius: 16px;
  padding: 2.5rem 2rem;
  border: 1px solid rgba(15, 20, 25, 0.06);
}

.audience-card:nth-child(2) { background: #e8f0e6; }

.audience-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: white;
  background: var(--ink);
  padding: 0.4rem 0.85rem;
  border-radius: 4px;
  margin-bottom: 1.5rem;
}

.audience-tag.tag-parent { background: var(--accent-deep); }

.audience-card h3 {
  font-size: clamp(1.4rem, 2.6vw, 1.85rem);
  margin-bottom: 1rem;
  max-width: 18ch;
}

.audience-card p {
  font-size: 1rem;
  color: var(--ink-soft);
  margin-bottom: 1.25rem;
}

.audience-card ul { list-style: none; padding: 0; margin: 0; }

.audience-card li {
  font-size: 0.95rem;
  color: var(--ink-soft);
  padding: 0.4rem 0 0.4rem 1.5rem;
  position: relative;
}

.audience-card li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: 700;
}

/* ---------- Lépések ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
}

.step { padding-top: 1rem; }

.step-num {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 900;
  font-style: italic;
  line-height: 1;
  color: var(--accent);
  margin-bottom: 0.5rem;
  letter-spacing: -0.04em;
}

.step h3 { font-size: 1.3rem; margin-bottom: 0.6rem; }

.step p {
  color: var(--ink-muted);
  font-size: 0.97rem;
  margin: 0;
}

/* ---------- Tankönyv-rács ---------- */

.section-tankonyvek {
  background: var(--paper-warm);
  max-width: none;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
  scroll-margin-top: 1rem;
}

.section-tankonyvek > *:not(.tankonyv-grid) {
  max-width: var(--maxw);
  margin-left: auto;
  margin-right: auto;
}

.tankonyvek-eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin-bottom: 1rem;
}

.tankonyvek-lead {
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  color: var(--ink-soft);
  margin-bottom: 3rem;
  max-width: 50ch;
  line-height: 1.5;
}

.tankonyv-grid {
  max-width: var(--maxw-wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

@media (max-width: 980px) {
  .tankonyv-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .tankonyv-grid { grid-template-columns: 1fr; }
}

/* A Quarto a markdown-link-with-image konstrukciót egy <a>-ba csomagolja,
   ami egy <p>-t tartalmaz, benne <img> + <br>-ek + <span>-ek.
   Az osztályok az <a>-ra kerülnek (.tankonyv-card). */

.tankonyv-card {
  display: block;
  background: white;
  border: 1px solid rgba(15, 20, 25, 0.08);
  border-radius: 14px;
  overflow: hidden;
  text-decoration: none !important;
  color: var(--ink) !important;
  position: relative;
  transition: transform 0.2s cubic-bezier(0.2, 0.8, 0.2, 1),
              box-shadow 0.2s cubic-bezier(0.2, 0.8, 0.2, 1),
              border-color 0.2s ease;
  box-shadow: 0 1px 2px rgba(15, 20, 25, 0.04);
}

.tankonyv-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 40px -12px rgba(15, 20, 25, 0.25),
              0 6px 12px -6px rgba(15, 20, 25, 0.1);
  border-color: var(--accent);
  color: var(--ink) !important;
}

.tankonyv-card:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

/* A linken belüli <p> a teljes kártyatartalmat befogja */
.tankonyv-card > p {
  margin: 0;
  display: flex;
  flex-direction: column;
  height: 100%;
}

/* Quarto figure-be csomagolja a képet — kezeljük is, és a sima img-et is */
.tankonyv-card figure,
.tankonyv-card .quarto-figure {
  margin: 0;
  display: block;
}

.tankonyv-card figcaption,
.tankonyv-card .figure-caption { display: none; }

.tankonyv-img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  background: linear-gradient(135deg, var(--accent-soft) 0%, #fff5d6 100%);
  border-bottom: 1px solid rgba(15, 20, 25, 0.06);
  margin: 0 !important;
}

/* ====== Slideshow (9a, 10a — kétkötetes) ======
   Struktúra (raw HTML): a kártyán belül egy span.tankonyv-cover,
   benne két img.slide-1 / .slide-2 — egymásra rétegezve, fade-átmenettel. */

.tankonyv-cover {
  display: block;
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
  background: linear-gradient(135deg, var(--accent-soft) 0%, #fff5d6 100%);
  border-bottom: 1px solid rgba(15, 20, 25, 0.06);
  overflow: hidden;
}

.tankonyv-cover .tankonyv-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 0.5rem;
  margin: 0 !important;
  background: transparent !important;
  border: none !important;
}

.tankonyv-cover .slide-1,
.tankonyv-cover .slide-2 {
  animation: tankonyv-fade 6s infinite;
}

.tankonyv-cover .slide-2 {
  animation-delay: -3s;
}

@keyframes tankonyv-fade {
  0%, 40%   { opacity: 1; }
  50%, 90%  { opacity: 0; }
  100%      { opacity: 1; }
}

/* Reduced-motion: csak az első kép látszik */
@media (prefers-reduced-motion: reduce) {
  .tankonyv-cover .slide-1 { animation: none; opacity: 1; }
  .tankonyv-cover .slide-2 { animation: none; opacity: 0; }
}

/* A <br>-eket eltüntetjük, sávok közti távolságot a span-ek alapján adjuk */
.tankonyv-card br { display: none; }

.tankonyv-evfolyam,
.tankonyv-csalad,
.tankonyv-price,
.tankonyv-cta {
  display: block;
  padding: 0 1.25rem;
}

.tankonyv-evfolyam {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ink);
  padding-top: 1.1rem;
  padding-bottom: 0.1rem;
  letter-spacing: -0.01em;
}

.tankonyv-csalad {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-muted);
  padding-bottom: 0.9rem;
  border-bottom: 1px dashed rgba(15, 20, 25, 0.12);
  margin-bottom: 0.75rem;
}

.tankonyv-price {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--accent-deep);
  letter-spacing: -0.02em;
  padding-bottom: 0.4rem;
}

.tankonyv-cta {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ink);
  padding-bottom: 1.1rem;
  margin-top: auto;
  transition: transform 0.2s ease, color 0.2s ease;
}

.tankonyv-card:hover .tankonyv-cta {
  color: var(--accent-deep);
  transform: translateX(3px);
}

.tankonyvek-help {
  font-size: 0.95rem;
  color: var(--ink-muted);
  margin-top: 2.5rem;
  text-align: center;
  max-width: 60ch;
  margin-left: auto;
  margin-right: auto;
  font-style: italic;
}

/* ---------- FAQ ---------- */

.faq {
  display: grid;
  gap: 0;
  max-width: 720px;
}

.faq-item {
  border-top: 1px solid rgba(15, 20, 25, 0.12);
  padding: 1.5rem 0;
}

.faq-item:last-child { border-bottom: 1px solid rgba(15, 20, 25, 0.12); }

.faq-item h3 {
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  letter-spacing: -0.005em;
}

.faq-item p {
  font-size: 0.97rem;
  color: var(--ink-muted);
  margin: 0;
}

/* ---------- Final CTA ---------- */

.final-cta {
  max-width: none;
  background: var(--ink);
  color: var(--paper);
  padding: clamp(4rem, 10vw, 7rem) var(--gutter);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.final-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 30% 20%, rgba(255, 91, 53, 0.18) 0%, transparent 40%),
                    radial-gradient(circle at 70% 80%, rgba(255, 240, 102, 0.1) 0%, transparent 40%);
  pointer-events: none;
}

.final-cta > * { position: relative; }

.final-cta-title,
h2.final-cta-title {
  color: var(--paper) !important;
  font-size: clamp(2.4rem, 6vw, 4rem);
  margin-bottom: 1rem;
}

.final-cta-lead {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  color: rgba(250, 247, 242, 0.85);
  margin-bottom: 2.5rem;
  max-width: 32ch;
  margin-left: auto;
  margin-right: auto;
}

.final-cta .btn-primary {
  background: var(--paper);
  color: var(--ink) !important;
  border-color: var(--paper);
}

.final-cta .btn-primary:hover {
  background: white;
  color: var(--ink) !important;
}

.footer-note {
  max-width: none;
  text-align: center;
  padding: 2rem var(--gutter);
  font-size: 0.85rem;
  color: var(--ink-muted);
  background: var(--paper);
}

.footer-note a { color: var(--ink-muted); }

/* ---------- Reszponzív finomítások ---------- */

@media (max-width: 640px) {
  .hero-title { font-size: clamp(2rem, 9vw, 2.8rem); }
  .btn-primary { width: 100%; text-align: center; box-shadow: 4px 4px 0 var(--accent); }
  .btn-primary:hover { box-shadow: 6px 6px 0 var(--accent); }
}