/* =====================================================================
   MONSTER ENERGY — onepage
   Stil: tamna, filmska, "futuristička" tema. Crna + neonska zelena.
   Font: Montserrat. Sve mjere su fluidne (clamp) radi responzivnosti.
   ===================================================================== */

/* ---------- 1. VARIJABLE ---------- */
:root {
  --black:       #000000;
  --charcoal:    #0a0a0a;
  --charcoal-2:  #111311;
  --panel:       rgba(255, 255, 255, 0.04);

  --green:       #6eff00;   /* glavni neonski naglasak */
  --green-bright:#9bff5a;
  --green-deep:  #3f9e00;

  --text:        #f1f5ee;
  --muted:       #9aa093;
  --line:        rgba(110, 255, 0, 0.16);

  --font: 'Montserrat', 'Arial Narrow', system-ui, -apple-system, sans-serif;

  --container: 1200px;
  --radius: 18px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- 2. RESET ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px; /* da fiksna navigacija ne prekrije naslov sekcije */
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--black);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
strong { font-weight: 700; }

/* ---------- 3. POMOĆNE KLASE ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

.text-green { color: var(--green); }

.eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2.2rem, 6vw, 4.6rem);
  font-weight: 900;
  line-height: 0.98;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.section-head { margin-bottom: clamp(2.5rem, 6vw, 4rem); }
.section-head--center { text-align: center; margin-inline: auto; max-width: 720px; }

.section-sub {
  margin-top: 1.25rem;
  color: var(--muted);
  font-size: clamp(1rem, 1.6vw, 1.15rem);
}

/* ---------- 4. POZADINSKI EFEKTI ---------- */
/* Zrnata tekstura preko cijelog ekrana */
.grain {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.055;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Difuzni zeleni sjaj u pozadini */
.bg-glows { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.5;
}
.glow--1 { width: 46vw; height: 46vw; top: -10vw; left: -8vw;  background: radial-gradient(circle, rgba(110,255,0,0.40), transparent 70%); }
.glow--2 { width: 40vw; height: 40vw; bottom: -12vw; right: -6vw; background: radial-gradient(circle, rgba(110,255,0,0.22), transparent 70%); }
.glow--3 { width: 36vw; height: 36vw; top: 45%; left: 55%; background: radial-gradient(circle, rgba(63,158,0,0.20), transparent 70%); }

/* Sadržaj iznad pozadine */
.nav, main, .footer { position: relative; z-index: 2; }

/* ---------- 5. NAVIGACIJA ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  transition: background 0.4s var(--ease), backdrop-filter 0.4s var(--ease), border-color 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(5, 6, 5, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.nav__logo { height: 30px; width: auto; transition: transform 0.3s var(--ease); }
.nav__brand:hover .nav__logo { transform: scale(1.05); }

.nav__menu { display: flex; gap: clamp(1.5rem, 3vw, 2.75rem); align-items: center; }
.nav__link {
  position: relative;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 0.5rem 0;
  transition: color 0.25s var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--green);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
  box-shadow: 0 0 12px var(--green);
}
.nav__link:hover { color: var(--text); }
.nav__link:hover::after,
.nav__link.is-active::after { transform: scaleX(1); }
.nav__link.is-active { color: var(--text); }

/* Hamburger */
.nav__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px; height: 44px;
  background: none; border: none; cursor: pointer;
  z-index: 60;
}
.nav__burger span {
  display: block;
  height: 2px; width: 26px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.35s var(--ease), opacity 0.25s var(--ease);
}
.nav.is-open .nav__burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav.is-open .nav__burger span:nth-child(2) { opacity: 0; }
.nav.is-open .nav__burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 6. GUMBI ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 1rem 2rem;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), background 0.3s var(--ease), color 0.3s var(--ease);
  will-change: transform;
}
.btn--primary {
  background: var(--green);
  color: #06210a;
  border: 1px solid var(--green);
  box-shadow: 0 0 0 rgba(110,255,0,0);
}
.btn--primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(110, 255, 0, 0.45);
  background: var(--green-bright);
}
.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}
.btn--ghost:hover {
  transform: translateY(-3px);
  border-color: var(--green);
  color: var(--green);
  box-shadow: 0 12px 40px rgba(110, 255, 0, 0.18);
}

/* ---------- 7. HERO ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: 76px;
  overflow: hidden;
}
.hero__inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: clamp(2rem, 5vw, 4rem);
  width: 100%;
}
.hero__title {
  font-size: clamp(3.2rem, 11vw, 8.5rem);
  font-weight: 900;
  line-height: 0.86;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  margin: 0.5rem 0 1.5rem;
}
.text-green {
  /* svjetlucavi zeleni potpis na naslovu */
  text-shadow: 0 0 30px rgba(110, 255, 0, 0.55);
}
.hero__lead {
  max-width: 44ch;
  font-size: clamp(1.05rem, 1.8vw, 1.3rem);
  color: var(--muted);
  margin-bottom: 2.5rem;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 1rem; }

/* Limenka */
.hero__product {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 460px;
}
.can {
  position: relative;
  z-index: 2;
  height: clamp(330px, 46vw, 470px);
  width: auto;
  filter: drop-shadow(0 30px 45px rgba(0, 0, 0, 0.8)) drop-shadow(0 0 40px rgba(110, 255, 0, 0.25));
  animation: float 6s ease-in-out infinite;
  transition: transform 0.2s linear;
  will-change: transform;
}
.can-glow {
  position: absolute;
  z-index: 1;
  width: 115%; aspect-ratio: 1;
  background: radial-gradient(circle, rgba(110,255,0,0.42), rgba(110,255,0,0.06) 45%, transparent 68%);
  filter: blur(8px);
  animation: pulse 5s ease-in-out infinite;
}
.can-shadow {
  position: absolute;
  z-index: 0;
  bottom: 6%;
  width: 60%; height: 26px;
  background: radial-gradient(ellipse, rgba(0,0,0,0.85), transparent 70%);
  filter: blur(10px);
  animation: shadowPulse 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50%      { transform: translateY(-22px) rotate(1deg); }
}
@keyframes pulse {
  0%, 100% { opacity: 0.75; transform: scale(0.96); }
  50%      { opacity: 1;    transform: scale(1.04); }
}
@keyframes shadowPulse {
  0%, 100% { transform: scaleX(1);    opacity: 0.8; }
  50%      { transform: scaleX(0.82); opacity: 0.55; }
}

/* Energetske čestice */
.hero__particles { position: absolute; inset: 0; z-index: 1; pointer-events: none; }
.particle {
  position: absolute;
  bottom: -10px;
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
  opacity: 0;
  animation: rise linear infinite;
}
@keyframes rise {
  0%   { transform: translateY(0) scale(1); opacity: 0; }
  10%  { opacity: 0.9; }
  90%  { opacity: 0.7; }
  100% { transform: translateY(-100vh) scale(0.3); opacity: 0; }
}

/* Indikator skrolanja */
.hero__scroll {
  position: absolute;
  left: 50%; bottom: 28px;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 0.6rem;
  font-size: 0.68rem; font-weight: 700; letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--muted);
}
.hero__scroll-dot {
  width: 22px; height: 36px;
  border: 2px solid var(--line);
  border-radius: 12px;
  position: relative;
}
.hero__scroll-dot::before {
  content: "";
  position: absolute;
  left: 50%; top: 7px;
  width: 4px; height: 8px;
  background: var(--green);
  border-radius: 2px;
  transform: translateX(-50%);
  animation: scrollDot 1.8s ease-in-out infinite;
}
@keyframes scrollDot {
  0%, 100% { transform: translate(-50%, 0); opacity: 1; }
  50%      { transform: translate(-50%, 10px); opacity: 0.3; }
}

/* ---------- 8. PROIZVOD ---------- */
.product {
  position: relative;
  padding: clamp(5rem, 12vw, 9rem) 0;
  overflow: hidden;
}
.product__watermark {
  position: absolute;
  top: 50%; right: -8%;
  transform: translateY(-50%);
  width: min(720px, 70%);
  opacity: 0.05;
  pointer-events: none;
  filter: grayscale(1) brightness(2);
}
.product__grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: start;
}
.product__text p { font-size: clamp(1.02rem, 1.5vw, 1.18rem); color: #cdd2c6; margin-bottom: 1.5rem; }
.product__claim {
  font-size: clamp(1.2rem, 2.4vw, 1.7rem) !important;
  font-weight: 700;
  color: var(--text) !important;
  line-height: 1.35;
  border-left: 3px solid var(--green);
  padding-left: 1.25rem;
  margin-top: 2rem;
}

/* Kartice značajki (staklo + sjaj) */
.features { display: grid; gap: 1.1rem; }
.feature {
  position: relative;
  padding: 1.6rem 1.75rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  overflow: hidden;
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.feature::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(110,255,0,0.10), transparent 45%);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
}
.feature:hover {
  transform: translateY(-6px);
  border-color: rgba(110, 255, 0, 0.5);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.5), 0 0 30px rgba(110, 255, 0, 0.12);
}
.feature:hover::before { opacity: 1; }
.feature__tag {
  font-size: 0.78rem; font-weight: 800; letter-spacing: 0.2em;
  color: var(--green);
}
.feature__title { font-size: 1.25rem; font-weight: 800; margin: 0.45rem 0 0.5rem; text-transform: uppercase; letter-spacing: 0.01em; }
.feature__desc { color: var(--muted); font-size: 0.97rem; }

/* ---------- 9. VIDEO ---------- */
.video {
  position: relative;
  padding: clamp(4rem, 10vw, 8rem) 0 clamp(6rem, 12vw, 9rem);
}
.video__frame {
  position: relative;
  max-width: 980px;
  margin-inline: auto;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: #000;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6), 0 0 70px rgba(110, 255, 0, 0.18);
  aspect-ratio: 16 / 9;
}
.video__player { width: 100%; height: 100%; display: block; object-fit: cover; background: #000; }

/* Prilagođena tipka za pokretanje */
.video__play {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 92px; height: 92px;
  display: grid; place-items: center;
  border: none; cursor: pointer;
  border-radius: 50%;
  background: var(--green);
  color: #06210a;
  box-shadow: 0 0 0 0 rgba(110, 255, 0, 0.5);
  animation: ring 2.4s ease-out infinite;
  transition: transform 0.3s var(--ease), background 0.3s var(--ease), opacity 0.4s var(--ease);
}
.video__play svg { width: 38px; height: 38px; fill: currentColor; margin-left: 4px; }
.video__play:hover { transform: scale(1.08); background: var(--green-bright); }
.video__play.is-hidden { opacity: 0; pointer-events: none; transform: scale(0.7); }
@keyframes ring {
  0%   { box-shadow: 0 0 0 0 rgba(110, 255, 0, 0.45); }
  70%  { box-shadow: 0 0 0 26px rgba(110, 255, 0, 0); }
  100% { box-shadow: 0 0 0 0 rgba(110, 255, 0, 0); }
}

/* ---------- 10. PODNOŽJE ---------- */
.footer {
  border-top: 1px solid var(--line);
  padding: clamp(2.5rem, 6vw, 4rem) 0;
  text-align: center;
  background: linear-gradient(to bottom, transparent, rgba(110,255,0,0.03));
}
.footer__inner { display: grid; gap: 1.1rem; place-items: center; }
.footer__brand {
  display: flex; align-items: center; gap: 0.75rem;
  font-weight: 800; letter-spacing: 0.18em; text-transform: uppercase; font-size: 0.95rem;
}
.footer__claw { width: 34px; height: auto; filter: drop-shadow(0 0 10px rgba(110,255,0,0.4)); }
.footer__note { max-width: 560px; color: var(--muted); font-size: 0.8rem; line-height: 1.6; }
.footer__copy { color: #5d6157; font-size: 0.78rem; letter-spacing: 0.05em; }

/* ---------- 11. REVEAL ANIMACIJE (na skrol) ---------- */
.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- 12. RESPONZIVNOST ---------- */
@media (max-width: 900px) {
  .hero__inner { grid-template-columns: 1fr; text-align: center; gap: 1rem; }
  .hero__copy { order: 2; }
  .hero__product { order: 1; min-height: 360px; }
  .hero__lead { margin-inline: auto; }
  .hero__actions { justify-content: center; }
  .product__grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  /* Mobilni izbornik */
  .nav__burger { display: flex; }
  .nav__menu {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(78vw, 320px);
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
    padding: 2rem;
    background: rgba(5, 7, 5, 0.96);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-left: 1px solid var(--line);
    transform: translateX(100%);
    transition: transform 0.45s var(--ease);
  }
  .nav.is-open .nav__menu { transform: translateX(0); }
  .nav__link { font-size: 1.1rem; }
  .hero__scroll { display: none; }
}

@media (max-width: 420px) {
  .btn { width: 100%; }
  .hero__actions { width: 100%; }
}

/* ---------- 13. POŠTOVANJE "REDUCED MOTION" ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}