/* ============================================================
   NEXALYTICS TECH — PREMIUM ENHANCEMENT LAYER v4.0
   Loaded after color5.css. Overrides & elevates the base theme.
   Safe to remove: base theme remains fully functional.
   ============================================================ */

:root {
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ring:        0 0 0 3px var(--accent-glow), 0 0 0 1.5px var(--accent);
}

/* ------------------------------------------------------------
   AMBIENT BACKGROUND — soft aurora blobs behind everything
------------------------------------------------------------ */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(600px 420px at 12% -4%,  rgba(0, 153, 204, 0.10), transparent 65%),
    radial-gradient(700px 500px at 88% 8%,   rgba(168, 85, 247, 0.07), transparent 65%),
    radial-gradient(500px 400px at 50% 110%, rgba(0, 180, 150, 0.06), transparent 65%);
}
[data-theme="dark"] body::after {
  background:
    radial-gradient(600px 420px at 12% -4%,  rgba(0, 194, 255, 0.12), transparent 65%),
    radial-gradient(700px 500px at 88% 8%,   rgba(168, 85, 247, 0.10), transparent 65%),
    radial-gradient(500px 400px at 50% 110%, rgba(0, 255, 209, 0.07), transparent 65%);
}

/* Animated gradient top bar */
body::before {
  background: linear-gradient(90deg, #00C2FF, #00FFD1, #a855f7, #00C2FF);
  background-size: 300% 100%;
  animation: topbar-flow 8s linear infinite;
}
@keyframes topbar-flow {
  to { background-position: 300% 0; }
}

/* ------------------------------------------------------------
   SELECTION & SCROLLBAR
------------------------------------------------------------ */
::selection { background: var(--accent); color: #fff; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: var(--border-light);
  border-radius: 8px;
  border: 2px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* Focus visibility for keyboard users */
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: none;
  box-shadow: var(--ring);
  border-radius: var(--radius-sm);
}

/* ------------------------------------------------------------
   HEADER — floating glass with refined depth
------------------------------------------------------------ */
.header {
  background: color-mix(in srgb, var(--surface) 78%, transparent);
  border-bottom: 1px solid transparent;
  box-shadow: 0 1px 0 var(--border);
}
.header.scrolled {
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  box-shadow: 0 8px 32px rgba(13, 18, 32, 0.10), 0 1px 0 var(--border);
}
[data-theme="dark"] .header.scrolled {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5), 0 1px 0 var(--border);
}

.logo, .article-view__logo, .page-view__logo {
  background: linear-gradient(135deg, var(--accent) 0%, var(--neon) 50%, var(--accent) 100%);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  animation: logo-shimmer 6s ease-in-out infinite;
}
@keyframes logo-shimmer {
  0%, 100% { background-position: 0% 0; }
  50%      { background-position: 100% 0; }
}
.logo__img {
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 140, 200, 0.25);
  transition: transform var(--ease-spring) 0.35s;
}
.logo:hover .logo__img { transform: rotate(-6deg) scale(1.08); }

/* Nav links — sliding pill */
.nav__link { border-radius: 50px; }
.nav__link.active {
  background: var(--grad-accent);
  color: #fff;
  box-shadow: 0 2px 10px rgba(0, 140, 200, 0.30);
}
[data-theme="dark"] .nav__link.active { color: #080C14; }
.nav__link.active::after { display: none; }

/* Header icon buttons */
.header__actions .btn {
  border-radius: 50%;
  width: 38px; height: 38px;
  padding: 0;
  justify-content: center;
  transition: all var(--ease-spring) 0.3s;
}
.header__actions .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 140, 200, 0.20);
  color: var(--accent);
}

/* ------------------------------------------------------------
   TICKER — sleeker, pauses on hover
------------------------------------------------------------ */
.ticker {
  height: 42px;
  background: color-mix(in srgb, var(--surface) 85%, transparent);
  backdrop-filter: blur(12px);
}
.ticker__label {
  clip-path: polygon(0 0, 100% 0, calc(100% - 12px) 100%, 0 100%);
  padding-right: 1.75rem;
}
.ticker:hover .ticker__track span { animation-play-state: paused; }
.ticker__track span { cursor: default; }

/* ------------------------------------------------------------
   HERO — cinematic editorial
------------------------------------------------------------ */
.hero__main {
  border-radius: 24px;
  box-shadow: var(--shadow-lg);
  transition: transform var(--ease-out) 0.45s, box-shadow var(--ease-out) 0.45s;
}
.hero__main:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 64px rgba(13, 18, 32, 0.18), 0 0 0 1px var(--border-light);
}
[data-theme="dark"] .hero__main:hover {
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.6), 0 0 40px rgba(0, 194, 255, 0.12);
}
.hero__main::after {
  background: linear-gradient(180deg,
    rgba(8, 12, 20, 0) 0%,
    rgba(8, 12, 20, 0.05) 40%,
    rgba(8, 12, 20, 0.72) 78%,
    rgba(8, 12, 20, 0.88) 100%);
}
/* Hero text always reads as light-on-image */
.hero__main .card__title--lg,
.hero__main:hover .card__title--lg {
  color: #fff !important;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.45);
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  letter-spacing: -0.02em;
}
.hero__main .card__excerpt {
  color: rgba(240, 244, 255, 0.82) !important;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.4);
}
.hero__main .card__meta { color: rgba(240, 244, 255, 0.7) !important; }
.hero__main .card__meta::before { background: var(--neon); }

/* Glass badge over hero image */
.hero__main .badge,
.card__img-wrap .badge {
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

/* Hero sidebar cards — accent slide */
.hero__sidebar .card--horizontal {
  border-left: 3px solid transparent;
  border-radius: var(--radius);
}
.hero__sidebar .card--horizontal:hover {
  border-left-color: var(--accent);
  box-shadow: var(--shadow-lg);
  transform: translateX(6px);
}
.hero__sidebar .card__img--sm { border-radius: 8px; margin: 0.55rem 0 0.55rem 0.55rem; }

/* ------------------------------------------------------------
   CARDS — lift, shine sweep, category accent line
------------------------------------------------------------ */
.card {
  border-radius: 18px;
  transition: transform var(--ease-out) 0.4s, box-shadow var(--ease-out) 0.4s, border-color 0.3s;
}
.card::after {
  /* category accent line */
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--grad-accent);
  opacity: 0;
  transition: opacity 0.3s;
  z-index: 3;
}
.card:hover::after { opacity: 1; }
.card:hover { transform: translateY(-7px); }

/* Shine sweep across image on hover */
.card__img-wrap::before {
  content: '';
  position: absolute;
  top: 0; left: -80%;
  width: 55%; height: 100%;
  background: linear-gradient(105deg, transparent, rgba(255, 255, 255, 0.28), transparent);
  transform: skewX(-18deg);
  transition: left 0.7s var(--ease-out);
  z-index: 2;
  pointer-events: none;
}
.card:hover .card__img-wrap::before { left: 130%; }
.card:hover .card__img { transform: scale(1.07); }

.card__title { letter-spacing: -0.01em; }

/* Card action buttons pop */
.card__actions .btn, .card__actions button {
  border-radius: 50px;
  transition: all var(--ease-spring) 0.28s;
}
.card__actions .btn:hover, .card__actions button:hover {
  transform: translateY(-2px);
  color: var(--accent);
  background: var(--accent-glow-2);
}

/* ------------------------------------------------------------
   FILTER BAR — glowing pills
------------------------------------------------------------ */
.filter-btn {
  border-radius: 50px;
  transition: all var(--ease-spring) 0.3s;
}
.filter-btn:hover { transform: translateY(-2px); }
.filter-btn.active {
  box-shadow: 0 4px 18px rgba(0, 140, 200, 0.35);
  transform: translateY(-1px);
}

/* ------------------------------------------------------------
   SECTION LABEL — gradient tick
------------------------------------------------------------ */
.section-label::before {
  width: 4px; height: 20px;
  border-radius: 3px;
  box-shadow: 0 0 12px var(--accent-glow);
}

/* ------------------------------------------------------------
   SIDEBAR WIDGETS
------------------------------------------------------------ */
.widget {
  border-radius: 18px;
  transition: transform var(--ease-out) 0.35s, box-shadow var(--ease-out) 0.35s;
}
.widget:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }

.trending-list li::before {
  font-size: 1.05rem;
  background: var(--grad-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.trending-list li {
  padding: 0.35rem 0;
  border-bottom: 1px dashed var(--border);
}
.trending-list li:last-child { border-bottom: none; }

.tag { transition: all var(--ease-spring) 0.28s; }
.tag:hover { transform: translateY(-2px) scale(1.04); box-shadow: 0 4px 12px var(--accent-glow); }

/* ------------------------------------------------------------
   BUTTONS — gradient shine
------------------------------------------------------------ */
.btn--primary {
  position: relative;
  overflow: hidden;
  transition: all var(--ease-spring) 0.3s;
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0, 140, 200, 0.35); }
.btn--primary::after {
  content: '';
  position: absolute;
  top: 0; left: -80%;
  width: 50%; height: 100%;
  background: linear-gradient(105deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: skewX(-18deg);
  transition: left 0.6s var(--ease-out);
}
.btn--primary:hover::after { left: 130%; }

#loadMore {
  display: block;
  margin: 3rem auto 0;
  padding: 0.85rem 2.5rem;
  border-radius: 50px;
  font-size: 0.95rem;
}

/* ------------------------------------------------------------
   FOOTER — gradient crown
------------------------------------------------------------ */
.footer::before {
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent), var(--neon), transparent);
}
.footer__social a { border-radius: 12px; transition: all var(--ease-spring) 0.3s; }
.footer__social a:hover { transform: translateY(-3px) rotate(-4deg); box-shadow: 0 6px 16px var(--accent-glow); }

/* ------------------------------------------------------------
   ARTICLE VIEW — premium reading experience
------------------------------------------------------------ */
.article-detail__hero { border-radius: 24px; }
.article-detail__hero img { transition: transform 0.6s var(--ease-out); }
.article-detail__hero:hover img { transform: scale(1.02); }

.article-detail__title {
  letter-spacing: -0.02em;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

/* Drop cap on the first paragraph */
.article-content > p:first-of-type::first-letter {
  font-family: 'Sora', sans-serif;
  font-size: 3.4em;
  font-weight: 800;
  float: left;
  line-height: 0.85;
  padding: 0.06em 0.12em 0 0;
  background: var(--grad-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.article-content blockquote {
  border-left: none;
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
  background: linear-gradient(135deg, var(--accent-glow-2), transparent);
  border: 1px solid var(--border);
  position: relative;
  font-size: 1.12rem;
}
.article-content blockquote::before {
  content: '\201C';
  position: absolute;
  top: -0.35em; left: 0.35em;
  font-size: 3.5rem;
  font-family: Georgia, serif;
  color: var(--accent);
  opacity: 0.35;
}

.article-content .highlight-box {
  border-radius: 16px;
  border: 1px solid var(--border-light);
  background: linear-gradient(135deg, var(--surface-2), var(--accent-glow-2));
  box-shadow: var(--shadow);
}

.nexalytics-take {
  border-left: none;
  border-radius: 16px;
  border: 1px solid var(--border-light);
  background: linear-gradient(135deg, var(--accent-glow-2), var(--surface-2));
  box-shadow: var(--shadow);
  padding: 1.5rem 1.75rem;
}

/* Reading progress bar (added by JS) */
.reading-progress {
  position: fixed;
  top: 3px; left: 0;
  height: 3px;
  width: 0%;
  background: var(--grad-accent);
  z-index: 1001;
  transition: width 0.1s linear;
  border-radius: 0 3px 3px 0;
  box-shadow: 0 0 10px var(--accent-glow);
}

/* ------------------------------------------------------------
   SCROLL REVEAL — elements fade/slide in (JS adds .in-view)
------------------------------------------------------------ */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
  will-change: opacity, transform;
}
.reveal.in-view { opacity: 1; transform: none; }

/* ------------------------------------------------------------
   REDUCED MOTION — respect user preference
------------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ------------------------------------------------------------
   SMALL SCREENS — polish
------------------------------------------------------------ */
@media (max-width: 768px) {
  .hero__main { border-radius: 18px; min-height: 400px; }
  .article-content > p:first-of-type::first-letter { font-size: 2.8em; }
}