/* ==========================================================================
   SkyeViewNews — Stylesheet
   --------------------------------------------------------------------------
   Table of contents:
     1.  Design tokens (custom properties)
     2.  Base & reset
     3.  Animated background
     4.  Layout primitives
     5.  Header & navigation
     6.  Breaking ticker
     7.  Hero section
     8.  Featured article
     9.  Section headings
     10. Article cards & grids
     11. Trending rail
     12. Toolbar (search / filter / sort)
     13. Newsletter
     14. Footer
     15. Article page
     16. About page
     17. States (loading, empty, not found)
     18. Animations & reveal-on-scroll
     19. Responsive
   ========================================================================== */

/* ==========================================================================
   1. Design tokens
   ========================================================================== */
:root {
  /* Color system */
  --bg-0: #04060d;
  --bg-1: #070b16;
  --bg-2: #0b1120;
  --ink-1: #f1f5fb;
  --ink-2: #b7c2d4;
  --ink-3: #7a879e;
  --line: rgba(148, 163, 184, 0.14);
  --line-strong: rgba(148, 163, 184, 0.26);

  --blue: #3b82f6;
  --cyan: #22d3ee;
  --purple: #8b5cf6;
  --silver: #cbd5e1;

  --grad-brand: linear-gradient(100deg, var(--cyan) 0%, var(--blue) 45%, var(--purple) 100%);
  --grad-text: linear-gradient(95deg, #e6f6ff 0%, #9fd4ff 40%, #c4b5fd 100%);

  /* Glass */
  --glass-bg: rgba(255, 255, 255, 0.045);
  --glass-bg-hover: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.09);
  --glass-blur: 18px;

  /* Glow */
  --glow-blue: 0 0 40px rgba(59, 130, 246, 0.25);
  --glow-cyan: 0 0 32px rgba(34, 211, 238, 0.22);
  --shadow-card: 0 18px 50px rgba(2, 6, 18, 0.55);

  /* Type */
  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;

  /* Rhythm */
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --container: 1200px;
  --nav-h: 72px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ==========================================================================
   2. Base & reset
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--bg-0);
  color: var(--ink-1);
  line-height: 1.65;
  font-size: 16px;
  overflow-x: hidden;
  min-height: 100vh;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

input,
select {
  font: inherit;
}

::selection {
  background: rgba(59, 130, 246, 0.45);
  color: #fff;
}

/* Custom scrollbar */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg-0); }
::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.25);
  border-radius: 8px;
}
::-webkit-scrollbar-thumb:hover { background: rgba(148, 163, 184, 0.4); }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ==========================================================================
   3. Animated background — fixed gradient orbs + grid, sits behind all pages
   ========================================================================== */
.bg-scene {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 70% -10%, rgba(59, 130, 246, 0.13), transparent 60%),
    radial-gradient(ellipse 60% 50% at 10% 20%, rgba(139, 92, 246, 0.10), transparent 60%),
    var(--bg-0);
}

.bg-scene::after {
  /* faint grid overlay */
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, black 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, black 0%, transparent 75%);
}

.bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
  will-change: transform;
}

.bg-orb--1 {
  width: 560px;
  height: 560px;
  top: -180px;
  left: -120px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.5), transparent 65%);
  animation: orb-drift-1 26s ease-in-out infinite alternate;
}

.bg-orb--2 {
  width: 640px;
  height: 640px;
  top: 10%;
  right: -220px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.42), transparent 65%);
  animation: orb-drift-2 32s ease-in-out infinite alternate;
}

.bg-orb--3 {
  width: 460px;
  height: 460px;
  bottom: -160px;
  left: 30%;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.3), transparent 65%);
  animation: orb-drift-3 38s ease-in-out infinite alternate;
}

@keyframes orb-drift-1 {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(120px, 90px) scale(1.15); }
}
@keyframes orb-drift-2 {
  from { transform: translate(0, 0) scale(1.1); }
  to   { transform: translate(-140px, 120px) scale(0.95); }
}
@keyframes orb-drift-3 {
  from { transform: translate(0, 0) scale(0.95); }
  to   { transform: translate(90px, -110px) scale(1.12); }
}

/* ==========================================================================
   4. Layout primitives
   ========================================================================== */
.container {
  width: min(var(--container), 92%);
  margin-inline: auto;
}

.section {
  padding: 72px 0;
}

/* ==========================================================================
   5. Header & navigation — frosted glass bar
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: background 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background: rgba(6, 9, 18, 0.72);
  backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  border-bottom-color: var(--line);
  box-shadow: 0 12px 40px rgba(2, 6, 18, 0.45);
}

.nav {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.22rem;
  letter-spacing: -0.02em;
}

.brand__logo {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  filter: drop-shadow(0 0 10px rgba(34, 211, 238, 0.5));
}

.brand__name em {
  font-style: normal;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}

.nav__link {
  position: relative;
  display: inline-block;
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-2);
  transition: color 0.25s ease, background 0.25s ease;
}

.nav__link:hover {
  color: var(--ink-1);
  background: var(--glass-bg-hover);
}

.nav__link.is-active {
  color: var(--ink-1);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  box-shadow: inset 0 0 18px rgba(59, 130, 246, 0.12);
}

/* Mobile menu button */
.nav__toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav__toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--ink-1);
  transition: transform 0.3s var(--ease-out), opacity 0.3s ease;
}

.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); }

/* ==========================================================================
   6. Breaking ticker
   ========================================================================== */
.ticker {
  margin-top: var(--nav-h);
  border-bottom: 1px solid var(--line);
  background: rgba(8, 12, 24, 0.6);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  overflow: hidden;
  display: flex;
  align-items: stretch;
}

.ticker__label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--cyan);
  border-right: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(34, 211, 238, 0.09), transparent);
}

.ticker__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
  animation: pulse-dot 1.6s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.45; transform: scale(0.75); }
}

.ticker__viewport {
  flex: 1;
  overflow: hidden;
  display: flex;
  align-items: center;
  /* fade edges */
  mask-image: linear-gradient(90deg, transparent, black 4%, black 96%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, black 4%, black 96%, transparent);
}

.ticker__track {
  display: flex;
  gap: 48px;
  padding-left: 24px;
  white-space: nowrap;
  animation: ticker-scroll 55s linear infinite;
}

.ticker:hover .ticker__track { animation-play-state: paused; }

.ticker__item {
  font-size: 0.88rem;
  color: var(--ink-2);
  display: inline-flex;
  align-items: center;
  gap: 12px;
  transition: color 0.2s ease;
}

.ticker__item::before {
  content: "◆";
  font-size: 0.55rem;
  color: var(--blue);
}

.ticker__item:hover { color: var(--cyan); }

@keyframes ticker-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ==========================================================================
   7. Hero section
   ========================================================================== */
.hero {
  padding: 96px 0 48px;
  text-align: center;
  position: relative;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-2);
  box-shadow: var(--glow-cyan);
}

.hero__eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--grad-brand);
  box-shadow: 0 0 12px rgba(34, 211, 238, 0.8);
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 6.5vw, 5rem);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.035em;
  margin: 28px auto 22px;
  max-width: 900px;
}

.hero__title .grad {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__sub {
  max-width: 640px;
  margin: 0 auto 36px;
  font-size: 1.13rem;
  color: var(--ink-2);
}

.hero__actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 13px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.97rem;
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease;
  will-change: transform;
}

.btn--primary {
  background: var(--grad-brand);
  color: #051020;
  box-shadow: 0 10px 32px rgba(59, 130, 246, 0.35);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 42px rgba(34, 211, 238, 0.45);
}

.btn--ghost {
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--ink-1);
}

.btn--ghost:hover {
  transform: translateY(-2px);
  background: var(--glass-bg-hover);
  border-color: var(--line-strong);
}

/* Hero stats strip */
.hero__stats {
  margin-top: 64px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 720px;
  margin-inline: auto;
}

.stat {
  padding: 20px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.stat__value {
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 700;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat__label {
  font-size: 0.82rem;
  color: var(--ink-3);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-top: 2px;
}

/* ==========================================================================
   8. Featured article — large glass banner
   ========================================================================== */
.featured {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--shadow-card);
  transition: transform 0.4s var(--ease-out), box-shadow 0.4s ease, border-color 0.4s ease;
}

.featured::before {
  /* soft gradient border glow on hover */
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: var(--grad-brand);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.featured:hover {
  transform: translateY(-4px);
  box-shadow: 0 28px 70px rgba(2, 6, 18, 0.65), var(--glow-blue);
}

.featured:hover::before { opacity: 0.75; }

.featured__media {
  position: relative;
  min-height: 340px;
  overflow: hidden;
}

.featured__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease-out);
}

.featured:hover .featured__media img { transform: scale(1.045); }

.featured__body {
  padding: 44px 42px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 16px;
}

.featured__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.02em;
}

.featured:hover .featured__title { color: #fff; }

.featured__summary {
  color: var(--ink-2);
  font-size: 1.02rem;
}

.featured__cta {
  margin-top: 8px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--cyan);
  font-size: 0.95rem;
}

.featured__cta svg { transition: transform 0.3s var(--ease-out); }
.featured:hover .featured__cta svg { transform: translateX(5px); }

/* ==========================================================================
   9. Section headings
   ========================================================================== */
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 34px;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
}

.section-head h2::after {
  content: "";
  display: block;
  width: 56px;
  height: 3px;
  border-radius: 3px;
  margin-top: 12px;
  background: var(--grad-brand);
  box-shadow: 0 0 14px rgba(34, 211, 238, 0.55);
}

.section-head p {
  color: var(--ink-3);
  font-size: 0.95rem;
  max-width: 380px;
  text-align: right;
}

/* ==========================================================================
   10. Article cards & grids
   ========================================================================== */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  transition: transform 0.35s var(--ease-out), box-shadow 0.35s ease, background 0.35s ease, border-color 0.35s ease;
  will-change: transform;
}

.card:hover {
  transform: translateY(-6px);
  background: var(--glass-bg-hover);
  border-color: rgba(94, 174, 255, 0.35);
  box-shadow: 0 24px 60px rgba(2, 6, 18, 0.6), 0 0 30px rgba(59, 130, 246, 0.16);
}

.card__media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-2);
}

.card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease-out), opacity 0.6s ease;
  opacity: 0;
}

.card__media img.is-loaded { opacity: 1; }
.card:hover .card__media img { transform: scale(1.06); }

.card__body {
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.card__title {
  font-family: var(--font-display);
  font-size: 1.13rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.015em;
  transition: color 0.25s ease;
}

.card:hover .card__title { color: var(--cyan); }

.card__summary {
  color: var(--ink-2);
  font-size: 0.92rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__foot {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--ink-3);
}

/* Meta row (date · read time) */
.meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--ink-3);
}

.meta__sep { opacity: 0.6; }

/* Category chip on cards */
.chip {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  padding: 5px 13px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--cyan);
  border: 1px solid rgba(34, 211, 238, 0.3);
  background: rgba(34, 211, 238, 0.08);
}

.chip--purple {
  color: #c4b5fd;
  border-color: rgba(139, 92, 246, 0.35);
  background: rgba(139, 92, 246, 0.1);
}

.chip--blue {
  color: #93c5fd;
  border-color: rgba(59, 130, 246, 0.35);
  background: rgba(59, 130, 246, 0.1);
}

/* Floating chip over card image */
.card__media .chip {
  position: absolute;
  top: 14px;
  left: 14px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background: rgba(6, 10, 20, 0.55);
}

/* ==========================================================================
   11. Trending rail
   ========================================================================== */
.trending-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  counter-reset: trend;
}

.trend {
  counter-increment: trend;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 18px 22px;
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  transition: transform 0.3s var(--ease-out), border-color 0.3s ease, background 0.3s ease;
}

.trend:hover {
  transform: translateX(6px);
  background: var(--glass-bg-hover);
  border-color: rgba(139, 92, 246, 0.4);
}

.trend::before {
  content: "0" counter(trend);
  font-family: var(--font-display);
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0.85;
  min-width: 48px;
}

.trend__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.35;
}

.trend:hover .trend__title { color: var(--cyan); }

.trend .meta { margin-top: 5px; }

/* ==========================================================================
   12. Toolbar — search / category filter / sort
   ========================================================================== */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-bottom: 34px;
  padding: 18px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

.search {
  position: relative;
  flex: 1 1 260px;
}

.search svg {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ink-3);
  pointer-events: none;
}

.search input {
  width: 100%;
  padding: 12px 16px 12px 46px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(4, 6, 13, 0.55);
  color: var(--ink-1);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.search input::placeholder { color: var(--ink-3); }

.search input:focus {
  outline: none;
  border-color: rgba(34, 211, 238, 0.55);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.12), var(--glow-cyan);
}

/* Category filter chips */
.cat-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.cat-btn {
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-2);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.cat-btn:hover {
  color: var(--ink-1);
  border-color: var(--line-strong);
  background: var(--glass-bg-hover);
}

.cat-btn.is-active {
  color: #051020;
  background: var(--grad-brand);
  border-color: transparent;
  font-weight: 600;
  box-shadow: 0 4px 18px rgba(59, 130, 246, 0.35);
}

/* Sort select */
.sort {
  position: relative;
}

.sort select {
  appearance: none;
  -webkit-appearance: none;
  padding: 11px 42px 11px 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(4, 6, 13, 0.55);
  color: var(--ink-1);
  font-size: 0.88rem;
  cursor: pointer;
  transition: border-color 0.25s ease;
}

.sort select:hover { border-color: var(--line-strong); }
.sort select:focus {
  outline: none;
  border-color: rgba(34, 211, 238, 0.55);
}

.sort::after {
  content: "";
  position: absolute;
  right: 18px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--ink-3);
  border-bottom: 2px solid var(--ink-3);
  transform: translateY(-70%) rotate(45deg);
  pointer-events: none;
}

.results-count {
  font-size: 0.85rem;
  color: var(--ink-3);
  margin-bottom: 20px;
}

/* ==========================================================================
   13. Newsletter
   ========================================================================== */
.newsletter {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  padding: 64px 40px;
  text-align: center;
  overflow: hidden;
  background:
    radial-gradient(ellipse 60% 120% at 50% 0%, rgba(59, 130, 246, 0.16), transparent 70%),
    var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

.newsletter::before {
  content: "";
  position: absolute;
  top: 0;
  left: 20%;
  right: 20%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.8), transparent);
}

.newsletter h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.4vw, 2.3rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 12px;
}

.newsletter p {
  color: var(--ink-2);
  max-width: 480px;
  margin: 0 auto 30px;
}

.newsletter__form {
  display: flex;
  gap: 10px;
  max-width: 480px;
  margin: 0 auto;
}

.newsletter__form input {
  flex: 1;
  padding: 13px 20px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(4, 6, 13, 0.6);
  color: var(--ink-1);
}

.newsletter__form input:focus {
  outline: none;
  border-color: rgba(34, 211, 238, 0.55);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.12);
}

.newsletter__note {
  margin-top: 16px;
  font-size: 0.78rem;
  color: var(--ink-3);
}

.newsletter__success {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--cyan);
  font-weight: 600;
  padding: 13px;
}

.newsletter.is-subscribed .newsletter__form,
.newsletter.is-subscribed .newsletter__note { display: none; }
.newsletter.is-subscribed .newsletter__success {
  display: flex;
  animation: fade-up 0.5s var(--ease-out);
}

/* ==========================================================================
   14. Footer
   ========================================================================== */
.site-footer {
  margin-top: 40px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, transparent, rgba(6, 10, 20, 0.8));
  padding: 56px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 44px;
}

.footer-brand p {
  color: var(--ink-3);
  font-size: 0.92rem;
  max-width: 380px;
  margin-top: 14px;
}

.footer-col h3 {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  color: var(--ink-2);
  font-size: 0.92rem;
  transition: color 0.2s ease;
}

.footer-col a:hover { color: var(--cyan); }

.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: var(--ink-3);
}

.footer-tagline {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 600;
}

/* ==========================================================================
   15. Article page
   ========================================================================== */
.article-hero {
  margin-top: var(--nav-h);
  position: relative;
  min-height: 480px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.article-hero__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(115%);
}

.article-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(4, 6, 13, 0.35) 0%, rgba(4, 6, 13, 0.72) 55%, var(--bg-0) 100%);
}

.article-hero__content {
  position: relative;
  z-index: 1;
  padding: 120px 0 48px;
  width: 100%;
}

.article-hero__title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4.4vw, 3.3rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.03em;
  max-width: 860px;
  margin: 18px 0 20px;
  text-shadow: 0 4px 30px rgba(2, 6, 18, 0.6);
}

.byline {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.byline__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--grad-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  color: #051020;
  font-size: 0.95rem;
  box-shadow: 0 0 18px rgba(34, 211, 238, 0.4);
  flex-shrink: 0;
}

.byline__name {
  font-weight: 600;
  font-size: 0.95rem;
}

.byline__role {
  font-size: 0.8rem;
  color: var(--ink-3);
}

/* Article layout: prose + floating share rail */
.article-layout {
  display: grid;
  grid-template-columns: 64px minmax(0, 760px);
  gap: 44px;
  justify-content: center;
  padding: 56px 0 40px;
}

/* Share rail */
.share-rail {
  position: sticky;
  top: calc(var(--nav-h) + 32px);
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.share-btn {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-2);
  transition: all 0.25s ease;
}

.share-btn:hover {
  color: var(--cyan);
  border-color: rgba(34, 211, 238, 0.45);
  transform: translateY(-2px);
  box-shadow: var(--glow-cyan);
}

.share-rail__label {
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  text-align: center;
}

/* Prose typography */
.prose {
  font-size: 1.09rem;
  line-height: 1.85;
  color: #d4dcea;
}

.prose p { margin-bottom: 1.5em; }

.prose h2 {
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink-1);
  margin: 2em 0 0.8em;
  position: relative;
  padding-left: 18px;
}

.prose h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.22em;
  bottom: 0.22em;
  width: 4px;
  border-radius: 4px;
  background: var(--grad-brand);
  box-shadow: 0 0 12px rgba(34, 211, 238, 0.5);
}

.prose .pull-quote {
  margin: 2.2em 0;
  padding: 30px 36px;
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
  background:
    radial-gradient(ellipse 80% 140% at 0% 0%, rgba(139, 92, 246, 0.12), transparent 60%),
    var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  font-family: var(--font-display);
  font-size: 1.32rem;
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: -0.015em;
  color: var(--ink-1);
  position: relative;
}

.prose .pull-quote::before {
  content: "“";
  position: absolute;
  top: -26px;
  left: 24px;
  font-size: 4.4rem;
  line-height: 1;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Tag pills under article */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 40px 0 0;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.tag {
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--ink-2);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  transition: all 0.25s ease;
}

.tag:hover {
  color: var(--cyan);
  border-color: rgba(34, 211, 238, 0.4);
}

/* Author box */
.author-box {
  margin-top: 40px;
  display: flex;
  gap: 20px;
  align-items: center;
  padding: 26px 28px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

.author-box .byline__avatar {
  width: 58px;
  height: 58px;
  font-size: 1.15rem;
}

.author-box p {
  font-size: 0.9rem;
  color: var(--ink-2);
  margin-top: 4px;
}

/* Prev / next navigation */
.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  max-width: 860px;
  margin: 24px auto 0;
}

.article-nav__link {
  padding: 22px 26px;
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  transition: all 0.3s var(--ease-out);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.article-nav__link:hover {
  border-color: rgba(94, 174, 255, 0.4);
  background: var(--glass-bg-hover);
  transform: translateY(-3px);
}

.article-nav__link--next { text-align: right; }
.article-nav__link.is-empty { visibility: hidden; }

.article-nav__dir {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
}

.article-nav__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  line-height: 1.35;
}

/* ==========================================================================
   16. About page
   ========================================================================== */
.page-hero {
  padding: calc(var(--nav-h) + 90px) 0 64px;
  text-align: center;
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
  max-width: 820px;
  margin: 24px auto 20px;
}

.page-hero h1 .grad {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-hero p {
  max-width: 620px;
  margin: 0 auto;
  color: var(--ink-2);
  font-size: 1.12rem;
}

.about-block {
  max-width: 760px;
  margin: 0 auto 26px;
  padding: 42px 44px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

.about-block h2 {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.about-block h2::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: var(--grad-brand);
  box-shadow: 0 0 12px rgba(34, 211, 238, 0.6);
  flex-shrink: 0;
  transform: rotate(45deg);
}

.about-block p {
  color: var(--ink-2);
  margin-bottom: 1em;
}

.about-block p:last-child { margin-bottom: 0; }

.about-block ul {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 8px;
}

.about-block li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink-2);
  font-size: 0.95rem;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}

.about-block li::before {
  content: "◆";
  font-size: 0.55rem;
  color: var(--cyan);
}

/* Founder card */
.founder {
  display: flex;
  gap: 28px;
  align-items: flex-start;
}

.founder__avatar {
  width: 96px;
  height: 96px;
  border-radius: 26px;
  flex-shrink: 0;
  background: var(--grad-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: #051020;
  box-shadow: 0 0 34px rgba(34, 211, 238, 0.35);
}

.founder__name {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
}

.founder__role {
  display: inline-block;
  margin: 6px 0 14px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ==========================================================================
   17. States — loading skeletons, empty search, article not found
   ========================================================================== */
.skeleton-grid { display: contents; }

.skeleton {
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  overflow: hidden;
  min-height: 340px;
  position: relative;
}

.skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, transparent 30%, rgba(255, 255, 255, 0.06) 50%, transparent 70%);
  animation: shimmer 1.4s infinite;
  transform: translateX(-100%);
}

@keyframes shimmer {
  to { transform: translateX(100%); }
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 80px 24px;
  border-radius: var(--radius-lg);
  border: 1px dashed var(--line-strong);
  background: rgba(255, 255, 255, 0.015);
}

.empty-state__icon {
  font-size: 2.6rem;
  margin-bottom: 16px;
  filter: grayscale(0.3);
}

.empty-state h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.empty-state p {
  color: var(--ink-3);
  max-width: 380px;
  margin: 0 auto 22px;
}

/* Article-not-found */
.not-found {
  padding: calc(var(--nav-h) + 120px) 0 120px;
  text-align: center;
}

.not-found__code {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 7rem);
  font-weight: 700;
  line-height: 1;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0.9;
}

.not-found h1 {
  font-family: var(--font-display);
  font-size: 1.7rem;
  margin: 18px 0 12px;
}

.not-found p {
  color: var(--ink-2);
  max-width: 440px;
  margin: 0 auto 30px;
}

/* Page loader (article page) */
.page-loader {
  padding: calc(var(--nav-h) + 140px) 0 140px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
  color: var(--ink-3);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.loader-ring {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 3px solid rgba(148, 163, 184, 0.15);
  border-top-color: var(--cyan);
  border-right-color: var(--blue);
  animation: spin 0.9s linear infinite;
  box-shadow: var(--glow-cyan);
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ==========================================================================
   18. Animations & reveal-on-scroll
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Honor reduced-motion preferences */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ==========================================================================
   19. Responsive
   ========================================================================== */
@media (max-width: 1024px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .featured { grid-template-columns: 1fr; }
  .featured__media { min-height: 280px; }
  .article-layout {
    grid-template-columns: minmax(0, 760px);
    justify-content: center;
  }
  .share-rail {
    position: static;
    flex-direction: row;
    order: 2;
    justify-content: center;
    align-items: center;
  }
  .share-rail__label { margin-right: 4px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .section { padding: 52px 0; }

  /* Mobile navigation drawer */
  .nav__toggle { display: flex; }

  .nav__links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 18px;
    background: rgba(5, 8, 16, 0.92);
    backdrop-filter: blur(22px) saturate(160%);
    -webkit-backdrop-filter: blur(22px) saturate(160%);
    border-bottom: 1px solid var(--line);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s var(--ease-out), visibility 0.3s;
  }

  .nav__links.is-open {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
    pointer-events: auto;
  }

  .nav__link {
    display: block;
    text-align: center;
    padding: 14px;
    font-size: 1.05rem;
  }

  .grid { grid-template-columns: 1fr; }
  .trending-list { grid-template-columns: 1fr; }
  .hero { padding: 64px 0 36px; }
  .hero__stats { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .stat { padding: 14px 8px; }
  .stat__value { font-size: 1.25rem; }
  .section-head { flex-direction: column; align-items: flex-start; }
  .section-head p { text-align: left; }
  .featured__body { padding: 28px 24px; }
  .toolbar { padding: 14px; }
  .newsletter { padding: 44px 22px; }
  .newsletter__form { flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .article-hero { min-height: 380px; }
  .article-nav { grid-template-columns: 1fr; }
  .article-nav__link.is-empty { display: none; }
  .prose { font-size: 1.02rem; }
  .prose .pull-quote { padding: 24px 22px; font-size: 1.14rem; }
  .about-block { padding: 28px 22px; }
  .about-block ul { grid-template-columns: 1fr; }
  .founder { flex-direction: column; align-items: center; text-align: center; }
  .ticker__label { padding: 10px 12px; }
}