/* ===========================================================
   Zengo szolgáltatások bemutatása — világos arculat
   =========================================================== */
:root {
  --accent: #38b5aa;         /* türkiz */
  --accent-dark: #008acd;    /* kék akcent */
  --accent-soft: rgba(56, 181, 170, 0.12);
  --grad: linear-gradient(87deg, #38b5aa, #008acd 100%);

  --ink: #3a3a3a;
  --ink-soft: #6a6a6a;
  --paper: #ffffff;
  --paper-2: #eff6f9;
  --line: #cde3ec;
  --radius: 18px;
  --shadow-sm: 0 5px 10px rgba(1, 58, 84, 0.08);
  --shadow-lg: 0 20px 50px rgba(1, 58, 84, 0.18);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: "Nunito", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap { width: min(1120px, 92vw); margin-inline: auto; }

a { color: inherit; }

/* ---------- Logó ---------- */
.logo { display: inline-flex; align-items: center; text-decoration: none; }
.logo-img { height: 30px; width: auto; display: block; }
.footer-logo-img { height: 26px; width: auto; display: block; }

/* ---------- Fejléc ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.site-header.scrolled { border-bottom-color: var(--line); box-shadow: var(--shadow-sm); }
.header-inner { display: flex; align-items: center; height: 68px; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(4rem, 12vh, 9rem) 0 clamp(3.5rem, 9vh, 7rem);
  background: linear-gradient(180deg, var(--paper-2) 0%, var(--paper) 100%);
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; filter: blur(40px); opacity: 0.6; }
.blob { position: absolute; border-radius: 50%; }
.blob-1 { width: 460px; height: 460px; background: radial-gradient(circle, rgba(56,181,170,0.42), transparent 70%); top: -160px; right: -80px; animation: drift 18s var(--ease) infinite alternate; }
.blob-2 { width: 380px; height: 380px; background: radial-gradient(circle, rgba(0,138,205,0.24), transparent 70%); bottom: -200px; left: -120px; animation: drift 22s var(--ease) infinite alternate-reverse; }
.blob-3 { width: 260px; height: 260px; background: radial-gradient(circle, rgba(1,58,84,0.16), transparent 70%); top: 40%; left: 50%; animation: drift 26s var(--ease) infinite alternate; }
@keyframes drift { to { transform: translate3d(40px, 30px, 0) scale(1.1); } }

.hero-inner { position: relative; text-align: center; }
.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-dark);
  background: var(--accent-soft);
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  margin-bottom: 1.4rem;
}
.hero-title {
  font-size: clamp(2.3rem, 6vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.05;
  margin-bottom: 1.2rem;
}
.hero-title .accent { color: var(--accent); }
.hero-intro {
  max-width: 620px;
  margin: 0 auto 2.2rem;
  font-size: clamp(1rem, 2vw, 1.18rem);
  color: var(--ink-soft);
}
.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  font-weight: 700;
  color: #fff;
  background: var(--grad);
  padding: 0.9rem 1.7rem;
  border-radius: 999px;
  box-shadow: 0 10px 28px rgba(0, 138, 205, 0.38);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.hero-cta svg { transition: transform 0.3s var(--ease); }
.hero-cta:hover { transform: translateY(-3px); box-shadow: 0 16px 36px rgba(0, 138, 205, 0.5); }
.hero-cta:hover svg { transform: translateY(3px); }

/* ---------- Szekció ---------- */
#content { padding: clamp(2.5rem, 6vh, 4.5rem) 0 4rem; }
.theme { padding: clamp(2rem, 5vh, 3.5rem) 0; }
.theme-head { margin-bottom: 1.8rem; }
.theme-head h2 { font-size: clamp(1.5rem, 3.5vw, 2.1rem); font-weight: 800; letter-spacing: -0.03em; }
.theme-head p { color: var(--ink-soft); margin-top: 0.25rem; }

/* ---------- Videó rács ---------- */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.6rem;
}
/* fókusz-effekt: hover-kor a testvérek elhalványulnak */
.video-grid:hover .video-card { opacity: 0.62; }
.video-grid:hover .video-card:hover { opacity: 1; }

.video-card {
  position: relative;
  border: none;
  padding: 0;
  background: var(--paper);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  text-align: left;
  font: inherit;
  color: inherit;
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease), opacity 0.35s var(--ease);
}
.video-card:hover { transform: translateY(-8px) scale(1.015); box-shadow: var(--shadow-lg); }
.video-card:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }

.thumb { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: var(--paper-2); }
.thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s var(--ease);
}
.video-card:hover .thumb img { transform: scale(1.08); }
.thumb::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(26,29,22,0.55) 100%);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
}
.video-card:hover .thumb::after { opacity: 1; }

.play-btn {
  position: absolute;
  top: 50%; left: 50%;
  width: 66px; height: 66px;
  transform: translate(-50%, -50%) scale(0.6);
  background: rgba(255,255,255,0.92);
  border-radius: 50%;
  display: grid; place-items: center;
  opacity: 0;
  transition: transform 0.4s var(--ease), opacity 0.4s var(--ease), background 0.3s;
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
}
.play-btn svg { width: 26px; height: 26px; margin-left: 3px; color: var(--ink); }
.video-card:hover .play-btn { opacity: 1; transform: translate(-50%, -50%) scale(1); background: var(--accent); }

.video-meta { padding: 1.05rem 1.2rem 1.2rem; }
.video-meta h3 {
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  transition: color 0.25s;
}
.video-card:hover .video-meta h3 { color: var(--accent-dark); }
.video-desc { margin-top: 0.5rem; font-size: 0.92rem; line-height: 1.5; color: var(--ink-soft); }
.video-meta .watch {
  margin-top: 0.7rem;
  font-size: 0.85rem;
  color: var(--ink-soft);
  display: inline-flex; align-items: center; gap: 0.3rem;
}

/* ---------- Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Lábléc ---------- */
.site-footer { border-top: 1px solid var(--line); background: var(--paper-2); padding: 2.5rem 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; }
.footer-inner p { color: var(--ink-soft); font-size: 0.92rem; }
.footer-inner a { color: var(--accent-dark); text-decoration: none; font-weight: 600; }

/* ---------- Lightbox ---------- */
.lightbox { position: fixed; inset: 0; z-index: 100; display: none; align-items: center; justify-content: center; padding: 5vw; }
.lightbox.open { display: flex; }
.lightbox-backdrop { position: absolute; inset: 0; background: rgba(16, 18, 12, 0.72); backdrop-filter: blur(6px); animation: fade 0.3s var(--ease); }
.lightbox-panel { position: relative; width: min(1000px, 100%); animation: pop 0.4s var(--ease); }
.lightbox-video { position: relative; aspect-ratio: 16 / 9; border-radius: var(--radius); overflow: hidden; background: #000; box-shadow: var(--shadow-lg); }
.lightbox-video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.lightbox-title { color: #fff; text-align: center; margin-top: 1rem; font-weight: 600; font-size: 1.05rem; }
.lightbox-close {
  position: absolute; z-index: 5; top: -18px; right: -18px;
  width: 44px; height: 44px;
  border: none; border-radius: 50%;
  background: var(--accent); color: var(--ink);
  cursor: pointer; display: grid; place-items: center;
  box-shadow: var(--shadow-lg);
  transition: transform 0.25s var(--ease);
}
.lightbox-close:hover { transform: rotate(90deg) scale(1.05); }
@keyframes fade { from { opacity: 0; } }
@keyframes pop { from { opacity: 0; transform: scale(0.94) translateY(10px); } }

@media (max-width: 640px) {
  .lightbox-close { top: 8px; right: 8px; }
}

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