:root {
  --bg: #090d14;
  --panel: rgba(13, 20, 33, 0.9);
  --panel-strong: #111b2d;
  --text: #ecf3ff;
  --muted: #8fa3c4;
  --line: rgba(132, 162, 206, 0.25);
  --accent: #37f0c1;
  --accent-2: #ff9f59;
  --warning: #ffd66b;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 5% 10%, rgba(55, 240, 193, 0.08), transparent 32%),
    radial-gradient(circle at 95% 0%, rgba(255, 159, 89, 0.12), transparent 30%),
    linear-gradient(160deg, #05080f 0%, #090d14 45%, #0d1220 100%);
  padding: 28px clamp(16px, 4vw, 48px) 40px;
}

.bg-glow {
  position: fixed;
  width: 280px;
  height: 280px;
  border-radius: 999px;
  z-index: -1;
  filter: blur(70px);
  opacity: 0.45;
}

.bg-glow-left {
  left: -60px;
  bottom: -30px;
  background: #37f0c1;
}

.bg-glow-right {
  right: -40px;
  top: -40px;
  background: #ff9f59;
}

.site-header,
.hero,
.toolbar,
.feed,
.site-footer {
  width: min(1120px, 100%);
  margin: 0 auto;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 28px;
}

.brand-kicker {
  margin: 0;
  font-family: "IBM Plex Mono", monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  font-size: 0.78rem;
}

h1 {
  margin: 8px 0 0;
  font-size: clamp(2rem, 6vw, 3.8rem);
  line-height: 0.95;
}

.header-link {
  margin-top: 8px;
  color: var(--accent);
  text-decoration: none;
  border: 1px solid rgba(55, 240, 193, 0.45);
  border-radius: 999px;
  padding: 8px 14px;
  transition: transform 0.25s ease, background-color 0.25s ease;
}

.header-link:hover {
  transform: translateY(-2px);
  background: rgba(55, 240, 193, 0.14);
}

.hero {
  display: grid;
  gap: 18px;
  grid-template-columns: 1.3fr 0.8fr;
  margin-bottom: 24px;
}

.hero-tag {
  display: inline-block;
  font-family: "IBM Plex Mono", monospace;
  color: #0d1422;
  background: linear-gradient(120deg, var(--warning), #ffe6a6);
  border-radius: 999px;
  font-size: 0.77rem;
  padding: 4px 10px;
  margin: 0 0 14px;
}

.hero h2 {
  margin: 0;
  font-size: clamp(1.45rem, 3vw, 2.35rem);
  line-height: 1.15;
}

.hero-copy {
  margin: 14px 0 0;
  color: var(--muted);
  max-width: 62ch;
  line-height: 1.7;
}

.hero-panel {
  background: linear-gradient(150deg, rgba(27, 43, 68, 0.95), rgba(11, 17, 28, 0.94));
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px;
}

.hero-panel h3 {
  margin: 0 0 14px;
  font-size: 1.02rem;
}

.hero-panel ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.hero-panel li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px dashed rgba(133, 166, 213, 0.22);
  padding-bottom: 8px;
}

.hero-panel span {
  color: var(--muted);
  font-size: 0.9rem;
}

.hero-panel strong {
  font-family: "IBM Plex Mono", monospace;
  color: var(--warning);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 14px;
  border: 1px solid var(--line);
  background: rgba(11, 17, 28, 0.8);
  border-radius: 16px;
  padding: 12px;
  margin-bottom: 20px;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-btn {
  border: 1px solid rgba(143, 163, 196, 0.42);
  background: transparent;
  color: var(--text);
  border-radius: 999px;
  padding: 8px 12px;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.92rem;
  transition: all 0.2s ease;
}

.filter-btn:hover,
.filter-btn.active {
  border-color: transparent;
  background: linear-gradient(120deg, var(--accent), #7affe2);
  color: #071019;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.9rem;
}

.search-box input {
  width: min(320px, 50vw);
  border-radius: 10px;
  border: 1px solid rgba(143, 163, 196, 0.35);
  background: rgba(8, 12, 20, 0.9);
  color: var(--text);
  padding: 8px 10px;
  font-size: 0.95rem;
}

.search-box input:focus {
  outline: none;
  border-color: rgba(55, 240, 193, 0.6);
  box-shadow: 0 0 0 3px rgba(55, 240, 193, 0.18);
}

.feed {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 14px;
}

.card {
  background: linear-gradient(150deg, rgba(15, 24, 40, 0.97), rgba(8, 14, 23, 0.95));
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 15px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 220px;
  animation: card-in 0.42s ease both;
}

.card:nth-child(2n) {
  animation-delay: 0.06s;
}

.card:nth-child(3n) {
  animation-delay: 0.11s;
}

@keyframes card-in {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.99);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.card-top {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: "IBM Plex Mono", monospace;
}

.card-source {
  color: var(--warning);
}

.card-category {
  color: var(--accent);
}

.card h3 {
  margin: 0;
  line-height: 1.4;
  font-size: 1rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.card a {
  margin-top: auto;
  text-decoration: none;
  color: var(--text);
  border-top: 1px dashed rgba(133, 166, 213, 0.3);
  padding-top: 10px;
  font-size: 0.9rem;
}

.card a:hover {
  color: var(--accent);
}

.empty {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--muted);
  border: 1px dashed rgba(133, 166, 213, 0.35);
  border-radius: 14px;
  padding: 30px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 28px;
  color: var(--muted);
  font-size: 0.85rem;
  font-family: "IBM Plex Mono", monospace;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  body {
    padding-inline: 14px;
  }

  .site-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .search-box {
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
  }

  .search-box input {
    width: 100%;
  }

  .site-footer {
    flex-direction: column;
  }
}