/* ============================================================
   AIna — crowdfunding sajt · 2062
   ============================================================ */

:root {
  --bg: #07090e;
  --bg-alt: #0b0e16;
  --surface: #10141f;
  --line: #1d2333;
  --text: #e8eaf2;
  --text-dim: #9aa1b5;
  --red: #ed1f24;
  --red-glow: rgba(237, 31, 36, 0.55);
  --cyan: #28e0e8;
  --font-body: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  --font-mono: "Cascadia Code", "SF Mono", Consolas, "Courier New", monospace;
  /* pozicija crvene tačke u logou (izmereno iz aina-logo.png) */
  --dot-x: 42.45%;
  --dot-y: 16.7%;
  --dot-size: 13.7%;
}

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

html { scroll-behavior: smooth; }

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

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

.hidden { display: none !important; }

.container { width: min(1100px, 92%); margin: 0 auto; }
.container--narrow { width: min(760px, 92%); }

/* ============ CRVENA TAČKA (AI) ============ */
.dot {
  position: absolute;
  left: var(--dot-x);
  top: var(--dot-y);
  width: var(--dot-size);
  aspect-ratio: 1 / 1;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 12px 2px var(--red-glow);
  animation:
    dot-blink 3.4s steps(1, end) infinite,
    dot-glitch 2.7s steps(1, end) infinite;
}

/* treperenje — kao stand-by dioda na starom televizoru */
@keyframes dot-blink {
  0%   { opacity: 1; }
  7%   { opacity: .25; }
  9%   { opacity: 1; }
  31%  { opacity: 1; }
  33%  { opacity: .1; }
  34%  { opacity: .9; }
  36%  { opacity: .3; }
  38%  { opacity: 1; }
  71%  { opacity: 1; }
  73%  { opacity: .5; }
  75%  { opacity: 1; }
  100% { opacity: 1; }
}

/* glič — RGB razdvajanje i "iskakanje" slike kao na CRT ekranu */
@keyframes dot-glitch {
  0%, 100% { box-shadow: 0 0 12px 2px var(--red-glow); transform: translate(-50%, -50%); }
  12% { box-shadow: -3px 0 0 0 rgba(40, 224, 232, .8), 3px 0 0 0 rgba(237, 31, 36, .8), 0 0 14px 3px var(--red-glow); transform: translate(calc(-50% + 2px), -50%); }
  13.5% { box-shadow: 3px 1px 0 0 rgba(40, 224, 232, .7), -3px -1px 0 0 rgba(255, 0, 128, .7), 0 0 10px 2px var(--red-glow); transform: translate(calc(-50% - 2px), calc(-50% + 1px)) skewX(8deg); }
  15% { box-shadow: 0 0 12px 2px var(--red-glow); transform: translate(-50%, -50%); }
  47% { box-shadow: -2px 0 0 0 rgba(40, 224, 232, .9), 2px 0 0 0 rgba(255, 0, 128, .6), 0 0 18px 4px var(--red-glow); transform: translate(calc(-50% + 1px), calc(-50% - 1px)) scaleY(.82); }
  49% { box-shadow: 0 0 12px 2px var(--red-glow); transform: translate(-50%, -50%); }
  78% { box-shadow: 4px 0 0 0 rgba(40, 224, 232, .8), -4px 0 0 0 rgba(237, 31, 36, .9), 0 0 16px 3px var(--red-glow); transform: translate(calc(-50% - 3px), -50%) skewX(-10deg); }
  79.5% { box-shadow: -2px 2px 0 0 rgba(40, 224, 232, .6), 0 0 20px 5px var(--red-glow); transform: translate(calc(-50% + 2px), calc(-50% + 2px)); }
  81% { box-shadow: 0 0 12px 2px var(--red-glow); transform: translate(-50%, -50%); }
}

/* statične linije skeniranja preko tačke u hero varijanti */
.dot--hero::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0 2px,
    rgba(0, 0, 0, .35) 2px 4px
  );
  mix-blend-mode: multiply;
}

/* ============ NAVIGACIJA ============ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(7, 9, 14, .85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav__inner {
  width: min(1100px, 92%);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .7rem 0;
}

.nav__brand-logo {
  position: relative;
  display: block;
  width: 86px;
}
.nav__brand-logo img { width: 100%; height: auto; }

.nav__menu {
  display: flex;
  gap: 1.8rem;
  list-style: none;
  align-items: center;
}

.nav__menu a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: .92rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  font-family: var(--font-mono);
  transition: color .2s;
}
.nav__menu a:hover, .nav__menu a:focus-visible { color: var(--text); }

.nav__cta {
  color: var(--red) !important;
  border: 1px solid var(--red);
  padding: .35rem .9rem;
  border-radius: 3px;
  transition: background .2s, color .2s;
}
.nav__cta:hover, .nav__cta:focus-visible { background: var(--red); color: #fff !important; }

.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
}
.nav__toggle span { width: 24px; height: 2px; background: var(--text); display: block; transition: transform .25s, opacity .25s; }
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ HERO ============ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background:
    radial-gradient(ellipse 70% 55% at 50% 42%, rgba(237, 31, 36, .07), transparent 70%),
    radial-gradient(ellipse 100% 80% at 50% 110%, rgba(40, 224, 232, .05), transparent 60%),
    var(--bg);
  overflow: hidden;
}

.hero__scanlines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0 3px,
    rgba(0, 0, 0, .18) 3px 4px
  );
  animation: scan-drift 9s linear infinite;
}

@keyframes scan-drift {
  from { background-position-y: 0; }
  to   { background-position-y: 8px; }
}

.hero__noise {
  position: absolute;
  inset: -50%;
  pointer-events: none;
  opacity: .045;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: noise-jitter .45s steps(3) infinite;
}

@keyframes noise-jitter {
  0% { transform: translate(0, 0); }
  33% { transform: translate(-2%, 1%); }
  66% { transform: translate(1%, -2%); }
  100% { transform: translate(0, 0); }
}

.hero__content { position: relative; z-index: 2; padding: 6rem 1rem 4rem; }

.hero__year {
  font-family: var(--font-mono);
  color: var(--text-dim);
  letter-spacing: .55em;
  font-size: clamp(.9rem, 2vw, 1.15rem);
  margin-bottom: 1.6rem;
}

.hero__logo {
  position: relative;
  width: min(420px, 72vw);
  margin: 0 auto;
  filter: drop-shadow(0 0 26px rgba(232, 234, 242, .12));
}
.hero__logo img { width: 100%; height: auto; }

.hero__tagline {
  margin-top: 2.2rem;
  color: var(--text-dim);
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  letter-spacing: .04em;
}

.hero__actions {
  margin-top: 2.4rem;
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  width: 26px; height: 42px;
  border: 2px solid var(--text-dim);
  border-radius: 14px;
  z-index: 2;
}
.hero__scroll span {
  position: absolute;
  top: 7px; left: 50%;
  width: 4px; height: 8px;
  margin-left: -2px;
  border-radius: 2px;
  background: var(--red);
  animation: scroll-hint 1.8s ease-in-out infinite;
}
@keyframes scroll-hint {
  0%, 100% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(14px); opacity: 0; }
}

/* glič naslova (2062.) */
.glitch-text { position: relative; display: inline-block; }
.glitch-text::before,
.glitch-text::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  opacity: 0;
}
.glitch-text::before { color: var(--cyan); animation: gl-a 4s steps(1) infinite; }
.glitch-text::after  { color: var(--red);  animation: gl-b 4s steps(1) infinite; }
@keyframes gl-a {
  0%, 100% { opacity: 0; }
  62% { opacity: .8; transform: translate(-3px, 1px); clip-path: inset(20% 0 55% 0); }
  64% { opacity: 0; }
}
@keyframes gl-b {
  0%, 100% { opacity: 0; }
  62% { opacity: .8; transform: translate(3px, -1px); clip-path: inset(55% 0 15% 0); }
  64% { opacity: 0; }
}

/* ============ DUGMAD ============ */
.btn {
  display: inline-block;
  padding: .8rem 2rem;
  font-family: var(--font-mono);
  font-size: .95rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 3px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .2s, color .2s, box-shadow .2s, border-color .2s;
}

.btn--primary {
  background: var(--red);
  color: #fff;
  box-shadow: 0 0 18px rgba(237, 31, 36, .35);
}
.btn--primary:hover, .btn--primary:focus-visible {
  background: #ff3338;
  box-shadow: 0 0 28px rgba(237, 31, 36, .55);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line);
}
.btn--ghost:hover, .btn--ghost:focus-visible { border-color: var(--text-dim); background: rgba(255, 255, 255, .04); }

/* ============ SEKCIJE ============ */
.section { padding: 6rem 0; }
.section--alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.section__kicker {
  font-family: var(--font-mono);
  color: var(--red);
  font-size: .85rem;
  letter-spacing: .2em;
  margin-bottom: .4rem;
}

.section__title {
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  letter-spacing: .03em;
  margin-bottom: 1.6rem;
}

.section__lead { color: var(--text-dim); margin-bottom: 2rem; }

/* ============ O FILMU ============ */
.about {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.about__text p { margin-bottom: 1.2rem; font-size: 1.06rem; color: var(--text); }
.about__text em { color: var(--text-dim); }

.terminal {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 18px 50px rgba(0, 0, 0, .45);
}

.terminal__bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: .55rem .8rem;
  background: #0c0f18;
  border-bottom: 1px solid var(--line);
}
.terminal__bar i { width: 10px; height: 10px; border-radius: 50%; background: #2a3147; }
.terminal__bar i:first-child { background: var(--red); }
.terminal__bar span {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--text-dim);
}

.terminal__body { padding: 1.2rem; font-family: var(--font-mono); font-size: .92rem; }
.terminal__body p { margin-bottom: .75rem; }
.t-ai { color: var(--text); }
.t-her { color: var(--text-dim); }
.t-dot {
  display: inline-block;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--red);
  margin-right: .5rem;
  box-shadow: 0 0 8px var(--red-glow);
  animation: dot-blink 3.4s steps(1, end) infinite;
}
.t-cursor {
  display: inline-block;
  width: 8px; height: 1.1em;
  background: var(--red);
  vertical-align: text-bottom;
  margin-left: 4px;
  animation: cursor-blink 1s steps(1) infinite;
}
@keyframes cursor-blink { 50% { opacity: 0; } }

/* ============ KVIZ ============ */
.quiz {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 2.2rem;
  min-height: 230px;
}

.quiz__intro { text-align: center; padding: 2rem 0; }

.quiz__progress {
  height: 4px;
  background: var(--line);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 1rem;
}
.quiz__progress span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--red);
  box-shadow: 0 0 10px var(--red-glow);
  transition: width .4s ease;
}

.quiz__counter {
  font-family: var(--font-mono);
  color: var(--text-dim);
  font-size: .85rem;
  margin-bottom: .8rem;
}

.quiz__question { font-size: 1.25rem; margin-bottom: 1.4rem; }

.quiz__answers { display: grid; gap: .8rem; }

.quiz__answer {
  text-align: left;
  background: var(--bg-alt);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: .9rem 1.1rem;
  font-size: 1rem;
  font-family: var(--font-body);
  cursor: pointer;
  transition: border-color .2s, background .2s, transform .1s;
}
.quiz__answer:hover:not(:disabled), .quiz__answer:focus-visible:not(:disabled) {
  border-color: var(--red);
  background: rgba(237, 31, 36, .07);
}
.quiz__answer:disabled { cursor: default; }
.quiz__answer .opt {
  font-family: var(--font-mono);
  color: var(--red);
  margin-right: .7rem;
}
.quiz__answer.is-correct { border-color: #2fbf71; background: rgba(47, 191, 113, .12); }
.quiz__answer.is-wrong { border-color: var(--red); background: rgba(237, 31, 36, .12); opacity: .85; }

.quiz__feedback { margin-top: 1.1rem; font-family: var(--font-mono); font-size: .92rem; color: var(--text-dim); }

.quiz__result { text-align: center; padding: 1rem 0; }
.quiz__result h3 { font-size: 1.5rem; margin-bottom: .6rem; }
.quiz__result .score {
  font-family: var(--font-mono);
  font-size: 2.6rem;
  color: var(--red);
  display: block;
  margin: .8rem 0;
  text-shadow: 0 0 18px var(--red-glow);
}
.quiz__result p { color: var(--text-dim); margin-bottom: 1.4rem; }

.quiz__error { color: var(--red); font-family: var(--font-mono); }

/* ============ SVRHA KAMPANJE ============ */
.purpose__text { max-width: 720px; }
.purpose__text p { margin-bottom: 1.2rem; font-size: 1.06rem; }

.purpose__cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
  margin: 2rem 0 2.6rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1.6rem;
  position: relative;
  transition: transform .25s, border-color .25s, box-shadow .25s;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(237, 31, 36, .5);
  box-shadow: 0 14px 36px rgba(0, 0, 0, .4);
}
.card__num {
  font-family: var(--font-mono);
  color: var(--red);
  font-size: .85rem;
  letter-spacing: .15em;
}
.card h3 { margin: .5rem 0 .6rem; font-size: 1.12rem; }
.card p { color: var(--text-dim); font-size: .95rem; }

.purpose__cta-line { text-align: center; font-size: 1.1rem; margin-bottom: 1.6rem; }
.purpose__cta { text-align: center; }

/* ============ DONACIJE ============ */
.donate {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 2.2rem;
}

.donate__tabs {
  display: flex;
  gap: .6rem;
  margin-bottom: 1.8rem;
  flex-wrap: wrap;
}

.donate__tab {
  flex: 1 1 200px;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  color: var(--text-dim);
  padding: .85rem 1rem;
  font-family: var(--font-mono);
  font-size: .92rem;
  letter-spacing: .05em;
  border-radius: 6px;
  cursor: pointer;
  transition: color .2s, border-color .2s, background .2s;
}
.donate__tab.is-active {
  color: var(--text);
  border-color: var(--red);
  background: rgba(237, 31, 36, .08);
}

.field { display: block; margin-bottom: 1.1rem; }
.field__label {
  display: block;
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: .4rem;
}
.field__input {
  width: 100%;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--text);
  padding: .8rem .9rem;
  font-size: 1rem;
  font-family: var(--font-body);
  transition: border-color .2s, box-shadow .2s;
}
.field__input:focus {
  outline: none;
  border-color: var(--red);
  box-shadow: 0 0 0 3px rgba(237, 31, 36, .15);
}
.field__input.is-invalid { border-color: var(--red); }
select.field__input { cursor: pointer; }

.donate__reward {
  background: rgba(237, 31, 36, .06);
  border: 1px dashed rgba(237, 31, 36, .45);
  border-radius: 6px;
  padding: 1rem 1.2rem;
  margin-bottom: 1.4rem;
  color: var(--text);
  font-size: .97rem;
}
.donate__reward strong { color: var(--red); }

.donate__subtitle { font-size: 1.3rem; margin-bottom: .4rem; }
.donate__hint { color: var(--text-dim); font-size: .92rem; margin-bottom: 1.4rem; }

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 1.2rem;
}
.field--wide { grid-column: 1 / -1; }

.form-error { color: var(--red); font-family: var(--font-mono); font-size: .88rem; margin-bottom: 1rem; }

.donate__nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.6rem;
  flex-wrap: wrap;
}

.payment {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1.6rem;
}
.payment__row { margin-bottom: 1rem; }
.payment__label {
  font-family: var(--font-mono);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--text-dim);
  display: block;
  margin-bottom: .2rem;
}
.payment__value { font-size: 1.05rem; word-break: break-all; }
.payment__value--big {
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 3.2vw, 1.45rem);
  color: var(--red);
  letter-spacing: .04em;
  text-shadow: 0 0 14px rgba(237, 31, 36, .3);
}
.payment__note {
  margin-top: 1.2rem;
  padding-top: 1.2rem;
  border-top: 1px dashed var(--line);
  color: var(--text-dim);
  font-size: .93rem;
}
.payment__note strong { color: var(--text); }

.copy-btn {
  background: none;
  border: 1px solid var(--line);
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: .75rem;
  padding: .25rem .6rem;
  border-radius: 4px;
  cursor: pointer;
  margin-left: .6rem;
  transition: color .2s, border-color .2s;
  vertical-align: middle;
}
.copy-btn:hover { color: var(--text); border-color: var(--text-dim); }

/* ============ FOOTER ============ */
.footer {
  border-top: 1px solid var(--line);
  padding: 3rem 0;
  background: var(--bg);
}
.footer__inner { text-align: center; }
.footer__logo {
  position: relative;
  width: 80px;
  margin: 0 auto 1rem;
}
.footer__line { color: var(--text-dim); font-size: .92rem; }
.footer__copy { color: #555d72; font-size: .8rem; margin-top: .5rem; font-family: var(--font-mono); }

/* ============ RESPONSIVE ============ */
@media (max-width: 860px) {
  .about { grid-template-columns: 1fr; }
  .purpose__cards { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .nav__toggle { display: flex; }
  .nav__menu {
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    background: rgba(7, 9, 14, .97);
    border-bottom: 1px solid var(--line);
    padding: 1.2rem 0 1.6rem;
    gap: 1.2rem;
    display: none;
  }
  .nav__menu.is-open { display: flex; }
  .section { padding: 4rem 0; }
  .quiz, .donate { padding: 1.4rem; }
  .form-grid { grid-template-columns: 1fr; }
}

/* ============ PRISTUPAČNOST ============ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .dot, .t-dot, .hero__noise, .hero__scanlines,
  .glitch-text::before, .glitch-text::after,
  .hero__scroll span, .t-cursor {
    animation: none !important;
  }
  .glitch-text::before, .glitch-text::after { opacity: 0; }
}