/* =========================================================
   Kardos Zoltán — AI tanácsadó | Premium blog stylesheet
   Single-file styles. Mobile-first.
   ========================================================= */

/* ---------- Design tokens ---------- */
:root {
  --color-bg: #0A0A0A;
  --color-surface: #141414;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.14);
  --color-text: #F0F0F0;
  --color-muted: #888888;
  --color-accent: #2979FF;
  --color-accent-light: #60A5FA;
  --color-hover-bg: #1A1A1A;

  --maxw: 1200px;
  --gap: 24px;
  --radius: 12px;
  --radius-lg: 20px;

  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --shadow-card: 0 12px 40px rgba(41, 121, 255, 0.15);

  --ease: 0.3s ease;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

::selection {
  background: var(--color-accent);
  color: #fff;
}

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 72px 0;
}

.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-accent-light);
  margin-bottom: 18px;
}

.muted {
  color: var(--color-muted);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--color-accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  padding: 14px 26px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--ease), box-shadow var(--ease), background var(--ease);
}

.btn:hover {
  background: var(--color-accent-light);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(41, 121, 255, 0.35);
}

.btn--ghost {
  background: transparent;
  border-color: var(--color-border-strong);
  color: var(--color-text);
}

.btn--ghost:hover {
  background: var(--color-hover-bg);
  border-color: var(--color-accent);
  box-shadow: none;
}

.btn--sm {
  padding: 10px 18px;
  font-size: 0.85rem;
}

/* ---------- Navbar ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  transition: background var(--ease), border-color var(--ease), backdrop-filter var(--ease);
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--color-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.nav__logo img {
  height: 64px;
  width: auto;
}

.nav__logo span {
  font-weight: 500;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
}

.nav__links {
  display: none;
  align-items: center;
  gap: 32px;
}

.nav__link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-muted);
  position: relative;
  padding: 4px 0;
  transition: color var(--ease);
}

.nav__link:hover {
  color: var(--color-text);
}

.nav__link.active {
  color: var(--color-text);
}

.nav__link.active::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}

.nav__cta {
  display: none;
}

/* Hamburger */
.nav__burger {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  cursor: pointer;
  padding: 0 11px;
}

.nav__burger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

body.menu-open .nav__burger span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
body.menu-open .nav__burger span:nth-child(2) {
  opacity: 0;
}
body.menu-open .nav__burger span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile overlay menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(10, 10, 10, 0.98);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 28px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-12px);
  transition: opacity 0.35s ease, transform 0.35s ease, visibility 0.35s;
}

body.menu-open .mobile-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mobile-menu a {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.mobile-menu a.active {
  color: var(--color-accent-light);
}

.mobile-menu .btn {
  margin-top: 12px;
  font-size: 1rem;
}

/* ---------- Hero (blog listing) ---------- */
.hero {
  position: relative;
  padding: 72px 0 40px;
  overflow: hidden;
}

.hero__inner {
  position: relative;
  z-index: 1;
}

/* Logo sits fixed in the upper-right as a soft background mark that
   stays in place while the page scrolls. mix-blend screen drops the
   logo's dark backdrop so only the glowing blue eye shows over our
   near-black background. */
.bg-logo {
  position: fixed;
  top: -40px;
  right: -48px;
  width: min(82vw, 680px);
  height: auto;
  opacity: 0.32;
  mix-blend-mode: screen;
  pointer-events: none;
  user-select: none;
  z-index: -1;
  -webkit-mask-image: linear-gradient(200deg, #000 35%, transparent 85%);
  mask-image: linear-gradient(200deg, #000 35%, transparent 85%);
}

.hero__tagline {
  margin-bottom: 14px;
  font-size: clamp(1rem, 2.6vw, 1.35rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-accent-light);
}

.hero__title {
  font-weight: 900;
  font-size: clamp(2.4rem, 7vw, 4.4rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  max-width: 14ch;
}

.hero__subtitle {
  margin-top: 22px;
  font-size: clamp(1.05rem, 2.4vw, 1.3rem);
  color: var(--color-muted);
  max-width: 52ch;
  font-weight: 400;
}

/* ---------- Blog grid ---------- */
.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
  height: 100%;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
  border-color: rgba(41, 121, 255, 0.3);
}

.card__media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-hover-bg);
}

.card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.card:hover .card__media img {
  transform: scale(1.05);
}

.card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 22px 22px 24px;
}

.badge {
  display: inline-block;
  align-self: flex-start;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.66rem;
  font-weight: 700;
  color: var(--color-accent-light);
  background: rgba(41, 121, 255, 0.1);
  border: 1px solid rgba(41, 121, 255, 0.25);
  padding: 5px 10px;
  border-radius: 999px;
}

.card__date {
  margin-top: 14px;
  font-size: 0.8rem;
  color: var(--color-muted);
}

.card__title {
  margin-top: 8px;
  font-size: 1.22rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__excerpt {
  margin-top: 12px;
  color: var(--color-muted);
  font-size: 0.95rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__more {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text);
}

.card__more .arrow {
  transition: transform var(--ease);
}

.card:hover .card__more .arrow {
  transform: translateX(6px);
  color: var(--color-accent-light);
}

/* ---------- About hero (centered magazine) ---------- */
.about-hero {
  text-align: center;
  padding-top: 72px;
  padding-bottom: 8px;
}

.bio-section {
  padding-top: 16px;
}

.about-portrait {
  position: relative;
  width: min(320px, 72vw);
  aspect-ratio: 4 / 5;
  margin: 0 auto 28px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-hover-bg);
}

.about-portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) contrast(1.05);
}

.about-portrait::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(10, 10, 10, 0.85) 100%);
  pointer-events: none;
}

.about-name {
  font-weight: 500;
  font-size: clamp(1.1rem, 2.6vw, 1.45rem);
  line-height: 1.1;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.about-role {
  margin-top: 8px;
  font-size: clamp(1rem, 2.4vw, 1.25rem);
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.about-tagline {
  margin-top: 16px;
  font-weight: 700;
  font-style: italic;
  color: var(--color-accent-light);
  font-size: clamp(1.05rem, 2.6vw, 1.35rem);
}

/* ---------- Bio (centered column) ---------- */
.bio {
  max-width: 680px;
  margin: 0 auto;
  text-align: left;
}

.bio p {
  font-size: 1.15rem;
  line-height: 1.75;
  color: #d8d8d8;
}

.bio p + p {
  margin-top: 24px;
}

.bio .accent-num {
  color: var(--color-accent-light);
  font-weight: 700;
}

.bio .bio__highlight {
  text-align: center;
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  color: var(--color-accent-light);
  margin: 28px 0;
}

.bio .bio__tagline {
  margin-top: 28px;
  font-size: 1.25rem;
  font-weight: 700;
  font-style: italic;
  letter-spacing: -0.01em;
  color: var(--color-accent-light);
  text-align: center;
}

/* ---------- Service cards (about) ---------- */
.services {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.service {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}

.service:hover {
  transform: translateY(-4px);
  border-color: rgba(41, 121, 255, 0.3);
  box-shadow: var(--shadow-card);
}

.service__num {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-accent);
}

.service__title {
  margin-top: 14px;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.service__text {
  margin-top: 10px;
  color: var(--color-muted);
  font-size: 1rem;
}

/* ---------- CTA block ---------- */
.cta {
  text-align: center;
  padding: 96px 0;
  border-top: 1px solid var(--color-border);
}

.cta__title {
  font-weight: 900;
  font-size: clamp(2.6rem, 9vw, 5.5rem);
  line-height: 1;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

.cta__sub {
  margin: 22px auto 32px;
  max-width: 46ch;
  color: var(--color-muted);
  font-size: 1.1rem;
}

/* ---------- Section heading helper ---------- */
.section-head {
  margin-bottom: 36px;
}

.section-head h2 {
  font-size: clamp(1.8rem, 4.5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

/* ---------- Single post ---------- */
.post-head {
  padding-top: 40px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-muted);
  font-weight: 700;
}

.breadcrumb a:hover {
  color: var(--color-text);
}

.breadcrumb .sep {
  opacity: 0.5;
}

.post-title {
  margin-top: 26px;
  font-weight: 900;
  font-size: clamp(2.2rem, 6vw, 4rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  max-width: 18ch;
}

.post-share {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 30px;
}

.post-share__label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--color-muted);
}

.share-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-muted);
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}

.share-icon:hover {
  color: #fff;
  border-color: var(--color-accent);
  background: rgba(41, 121, 255, 0.12);
}

.share-icon svg {
  width: 17px;
  height: 17px;
}

/* share buttons that are <button> (copy link, native share) */
button.share-icon {
  background: none;
  font: inherit;
  padding: 0;
  cursor: pointer;
}

/* "link copied" feedback */
.share-icon.copied {
  color: #fff;
  border-color: var(--color-accent);
  background: rgba(41, 121, 255, 0.18);
}

.post-lead {
  margin-top: 30px;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  line-height: 1.7;
  color: var(--color-muted);
  max-width: 60ch;
  font-weight: 600;
}

.post-hero {
  margin-top: 38px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--color-hover-bg);
}

.post-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-top: 26px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-muted);
}

.post-meta strong {
  color: var(--color-text);
  font-weight: 600;
}

/* Article body */
.article-body {
  max-width: 720px;
  margin: 0 auto;
  padding: 44px 0;
  font-size: 1.1rem;
  line-height: 1.8;
  color: #E0E0E0;
}

.article-body p + p {
  margin-top: 1.4rem;
}

.article-body h2 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: #fff;
}

.article-body ul {
  list-style: disc;
  padding-left: 1.4rem;
  margin-top: 1.2rem;
  color: #d0d0d0;
}

.article-body li + li {
  margin-top: 0.5rem;
}

.article-body blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: 1.5rem;
  margin: 2rem 0;
  color: var(--color-muted);
  font-style: italic;
  font-size: 1.2rem;
  line-height: 1.6;
}

.article-body strong {
  color: #fff;
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--color-border);
  padding: 28px 0;
}

.footer__tagline {
  text-align: center;
  font-weight: 700;
  color: var(--color-accent-light);
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  padding-bottom: 22px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--color-border);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.footer__top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--color-text);
  transition: color var(--ease);
}

.footer__top:hover {
  color: var(--color-accent-light);
}

/* ---------- Scroll animations ---------- */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Breakpoints ---------- */
@media (min-width: 768px) {
  .container {
    padding: 0 32px;
  }

  .nav__links,
  .nav__cta {
    display: flex;
  }

  .nav__burger {
    display: none;
  }

  .grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .services {
    grid-template-columns: repeat(3, 1fr);
  }

  .bg-logo {
    width: min(64vw, 860px);
    opacity: 0.62;
    top: -76px;
    right: -48px;
  }

  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

@media (min-width: 1200px) {
  .grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .animate-on-scroll {
    opacity: 1;
    transform: none;
    transition: none;
  }
  * {
    transition: none !important;
    animation: none !important;
  }
}

/* ===== FAQ (about) ===== */
.faq {
  max-width: 760px;
  margin: 0 auto;
}
.faq__item {
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: var(--color-surface);
  margin-bottom: 12px;
  padding: 0 20px;
}
.faq__item[open] {
  border-color: var(--color-border-strong);
}
.faq__q {
  list-style: none;
  cursor: pointer;
  font-weight: 700;
  padding: 18px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  color: var(--color-text);
}
.faq__q::-webkit-details-marker {
  display: none;
}
.faq__q::after {
  content: "+";
  color: var(--color-accent-light);
  font-size: 1.4rem;
  line-height: 1;
  transition: transform 0.2s ease;
}
.faq__item[open] .faq__q::after {
  transform: rotate(45deg);
}
.faq__a {
  color: var(--color-muted);
  padding: 0 0 20px;
  margin: 0;
  line-height: 1.65;
}

/* =========================================================
   Hírlevél feliratkozás (MailerLite, saját sötét stílus)
   ========================================================= */
.subscribe {
  padding: 64px 24px;
}
.subscribe__inner {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 44px 32px;
}
.subscribe__title {
  font-size: 1.6rem;
  font-weight: 900;
  margin: 0 0 10px;
  color: #fff;
}
.subscribe__text {
  color: var(--color-muted);
  margin: 0 0 24px;
  line-height: 1.6;
}
.subscribe__form {
  display: flex;
  gap: 10px;
  align-items: stretch;
  margin: 0;
}
.subscribe__form .ml-form-formContent,
.subscribe__form .ml-form-fieldRow,
.subscribe__form .ml-field-group {
  margin: 0;
  flex: 1;
  min-width: 0;
}
.subscribe__form .ml-form-embedSubmit {
  margin: 0;
}
.subscribe__input {
  width: 100%;
  box-sizing: border-box;
  background: var(--color-bg);
  border: 1px solid var(--color-border-strong);
  border-radius: 10px;
  color: var(--color-text);
  font: inherit;
  font-size: 0.95rem;
  padding: 13px 15px;
}
.subscribe__input::placeholder {
  color: var(--color-muted);
}
.subscribe__input:focus {
  outline: none;
  border-color: var(--color-accent);
}
.subscribe__btn {
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: 10px;
  font: inherit;
  font-weight: 700;
  padding: 13px 24px;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--ease);
}
.subscribe__btn:hover {
  background: var(--color-accent-light);
}
.subscribe__privacy {
  font-size: 0.75rem;
  color: var(--color-muted);
  margin: 16px 0 0;
  line-height: 1.5;
}
.subscribe .ml-form-successContent h4 {
  color: #fff;
  font-size: 1.2rem;
  margin: 0 0 8px;
}
.subscribe .ml-form-successContent p {
  color: var(--color-muted);
  margin: 0;
  line-height: 1.6;
}
.subscribe .ml-error .subscribe__input,
.subscribe .ml-error input {
  border-color: #ef4444 !important;
}

@media (max-width: 480px) {
  .subscribe__form {
    flex-direction: column;
  }
}

/* MailerLite betöltés-jelző + képernyőolvasó szöveg */
.ml-form-embedSubmitLoad {
  display: inline-block;
  width: 20px;
  height: 20px;
}
.ml-form-embedSubmitLoad:after {
  content: " ";
  display: block;
  width: 11px;
  height: 11px;
  margin: 1px;
  border-radius: 50%;
  border: 4px solid #fff;
  border-color: #fff #fff #fff transparent;
  animation: ml-loader 1.2s linear infinite;
}
@keyframes ml-loader {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}