/* ═══════════════════════════════════════════════════════════════════
 * SmartNewsAI Effects — стили вау-эффектов
 * Автономный файл: свои CSS-переменные с префиксом --sn-*,
 * не конфликтует со стилями вашего сайта.
 * ═══════════════════════════════════════════════════════════════════ */

:root {
  --sn-accent: #3b82f6;
  --sn-accent-2: #22d3ee;
  --sn-ink: #eaf2ff;
  --sn-ink-faint: #8fa3c8;
  --sn-bg: #050510;
  --sn-font-display: 'Unbounded', 'Montserrat', system-ui, sans-serif;
}

/* ── фоновые канвасы ───────────────────────────────────────────── */

/* звёздное небо — фиксированный фон всей страницы */
canvas[data-sn='stars'].sn-fixed {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ── входные анимации (играют после прелоадера) ────────────────── */

@keyframes snFadeUp {
  from {
    opacity: 0;
    transform: translateY(34px);
    filter: blur(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

.sn-anim-in {
  opacity: 0;
}

html.sn-loaded .sn-anim-in {
  animation: snFadeUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* переливающееся слово в заголовке */
.sn-shimmer {
  background: linear-gradient(
    100deg,
    #7dd3fc 20%,
    #eaf2ff 40%,
    var(--sn-accent-2) 60%,
    #7dd3fc 80%
  );
  background-size: 220% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: snShimmer 4.5s linear infinite;
}

@keyframes snShimmer {
  to {
    background-position: -220% 0;
  }
}

/* ── появление при скролле ─────────────────────────────────────── */

.sn-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity 0.75s ease,
    transform 0.75s cubic-bezier(0.16, 1, 0.3, 1);
}

.sn-reveal.sn-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ── свечение карточки за курсором ─────────────────────────────── */

.sn-card {
  position: relative;
  overflow: hidden;
}

.sn-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(
    340px circle at var(--mx, 50%) var(--my, 50%),
    rgba(59, 130, 246, 0.18),
    transparent 65%
  );
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}

.sn-card:hover::after {
  opacity: 1;
}

/* пульсирующая рамка у «горячей» новости */
.sn-card-hot {
  animation: snHotBorder 3s ease-in-out infinite;
}

@keyframes snHotBorder {
  0%,
  100% {
    border-color: rgba(34, 211, 238, 0.25);
    box-shadow: 0 0 0 rgba(34, 211, 238, 0);
  }
  50% {
    border-color: rgba(34, 211, 238, 0.65);
    box-shadow: 0 0 34px rgba(34, 211, 238, 0.18);
  }
}

/* ── zoom-секция (масштабирование фразы при скролле) ───────────── */

.sn-zoom-section {
  height: 260svh;
  position: relative;
}

.sn-zoom-sticky {
  position: sticky;
  top: 0;
  height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.sn-zoom-text {
  font-family: var(--sn-font-display);
  font-size: clamp(38px, 6.6vw, 92px);
  font-weight: 800;
  letter-spacing: -0.01em;
  text-align: center;
  max-width: 92vw;
  color: var(--sn-ink);
  will-change: transform;
}

.sn-zoom-word {
  color: rgba(234, 242, 255, 0.12);
  transition:
    color 0.35s,
    text-shadow 0.35s;
}

.sn-zoom-word.sn-zoom-active {
  color: var(--sn-ink);
  text-shadow: 0 0 46px rgba(34, 211, 238, 0.55);
}

/* ── восходящее свечение (футер) ───────────────────────────────── */

.sn-footer-orb {
  position: absolute;
  left: 50%;
  bottom: -30%;
  width: 70vmin;
  height: 70vmin;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(59, 130, 246, 0.35) 0%,
    rgba(34, 211, 238, 0.14) 42%,
    transparent 70%
  );
  filter: blur(30px);
  animation: snOrbRise 9s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes snOrbRise {
  from {
    transform: translateX(-50%) translateY(14%);
    opacity: 0.55;
  }
  to {
    transform: translateX(-50%) translateY(-6%);
    opacity: 1;
  }
}

/* ── подсказка «скролл» ────────────────────────────────────────── */

.sn-scroll-hint {
  position: absolute;
  z-index: 3;
  right: clamp(20px, 4vw, 56px);
  bottom: 74px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--sn-ink-faint);
  text-decoration: none;
}

.sn-scroll-hint-line {
  width: 1px;
  height: 44px;
  background: linear-gradient(var(--sn-accent-2), transparent);
  animation: snHintPulse 1.8s ease-in-out infinite;
}

@keyframes snHintPulse {
  0%,
  100% {
    transform: scaleY(0.4);
    transform-origin: top;
    opacity: 0.4;
  }
  50% {
    transform: scaleY(1);
    opacity: 1;
  }
}

/* ═══ Кастомный курсор ═══ */

@media (pointer: fine) {
  html.sn-has-cursor,
  html.sn-has-cursor * {
    cursor: none !important;
  }
}

.sn-cursor-dot,
.sn-cursor-ring,
.sn-cursor-trail {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 9999;
}

.sn-cursor-trail {
  width: 100vw;
  height: 100vh;
  z-index: 9997;
}

.sn-cursor-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--sn-accent-2);
  box-shadow:
    0 0 12px rgba(34, 211, 238, 0.9),
    0 0 34px rgba(34, 211, 238, 0.45);
  opacity: 0;
  transition: opacity 0.25s;
  z-index: 9999;
}

.sn-cursor-ring {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1.5px solid rgba(148, 190, 255, 0.5);
  opacity: 0;
  transition:
    opacity 0.25s,
    border-color 0.25s;
  z-index: 9998;
  will-change: transform;
}

@media (pointer: coarse) {
  .sn-cursor-dot,
  .sn-cursor-ring,
  .sn-cursor-trail {
    display: none;
  }
}

/* ═══ Прелоадер ═══ */

html.sn-loading {
  overflow: hidden;
}

.sn-preloader {
  position: fixed;
  inset: 0;
  z-index: 10001;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 30px;
  color: var(--sn-ink);
  background:
    radial-gradient(90% 70% at 50% 40%, rgba(37, 99, 235, 0.16), transparent 60%),
    var(--sn-bg);
  transition: transform 0.85s cubic-bezier(0.76, 0, 0.24, 1);
}

.sn-preloader-done {
  transform: translateY(-101%);
}

.sn-preloader-logo {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--sn-font-display);
  font-size: clamp(24px, 3.4vw, 40px);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.sn-preloader-mark {
  color: var(--sn-accent-2);
  margin-right: 8px;
  animation: snMarkSpin 2.2s cubic-bezier(0.16, 1, 0.3, 1) infinite;
  text-shadow: 0 0 26px rgba(34, 211, 238, 0.7);
}

@keyframes snMarkSpin {
  0% {
    transform: rotate(0deg) scale(1);
  }
  50% {
    transform: rotate(180deg) scale(1.18);
  }
  100% {
    transform: rotate(360deg) scale(1);
  }
}

.sn-preloader-letter {
  display: inline-block;
  opacity: 0;
  transform: translateY(0.6em);
  filter: blur(5px);
  animation: snLetterIn 0.55s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes snLetterIn {
  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

.sn-preloader-bar {
  width: min(280px, 60vw);
  height: 2px;
  border-radius: 2px;
  background: rgba(148, 190, 255, 0.15);
  overflow: hidden;
}

.sn-preloader-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--sn-accent), var(--sn-accent-2));
  box-shadow: 0 0 14px rgba(34, 211, 238, 0.8);
  transform: scaleX(0);
  transform-origin: left;
}

.sn-preloader-num {
  font-family: var(--sn-font-display);
  font-size: 13px;
  letter-spacing: 0.24em;
  color: var(--sn-ink-faint);
}

.sn-preloader-done .sn-preloader-logo,
.sn-preloader-done .sn-preloader-bar,
.sn-preloader-done .sn-preloader-num {
  transition:
    transform 0.5s ease,
    opacity 0.5s ease;
  transform: translateY(-26px);
  opacity: 0;
}

/* ═══ Reduced motion: всё статично ═══ */

@media (prefers-reduced-motion: reduce) {
  .sn-anim-in {
    opacity: 1;
  }
  .sn-shimmer {
    animation: none;
  }
  .sn-card-hot,
  .sn-footer-orb,
  .sn-scroll-hint-line,
  .sn-preloader-mark {
    animation: none;
  }
}