@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&family=Space+Grotesk:wght@500;600;700&display=swap');

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

:root {
  --bg:           #050607;
  --surface:      #0b0d0f;
  --surface-2:    #101418;
  --border:       #1a1f24;
  --text-primary: #f0f0f0;
  --text-secondary: #7a828a;
  --accent:       #00e676;
  --accent-dim:   rgba(0, 230, 118, 0.10);
  --font-mono:    'JetBrains Mono', 'Fira Code', monospace;
  --font-display: 'Space Grotesk', sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  padding: 40px 20px;
  display: flex;
  justify-content: center;
}

.container {
  width: 100%;
  max-width: 820px;
}

/* ── Header ─────────────────────────────────────────────── */

header {
  border-bottom: 1px solid var(--border);
  padding-bottom: 28px;
  margin-bottom: 28px;
}

.brand {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

h1 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 8px;
}

.update-time {
  color: var(--text-secondary);
  font-size: 11px;
  letter-spacing: 0.08em;
}

/* ── Filter section ──────────────────────────────────────── */

.filter-section {
  display: flex;
  align-items: flex-end;
  gap: 20px;
  margin-bottom: 24px;
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.filter-group label {
  font-family: var(--font-mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
}

select {
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  outline: none;
  cursor: pointer;
  transition: border-color 0.15s;
  appearance: none;
  -webkit-appearance: none;
  padding-right: 24px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%237a828a'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
}

select:focus {
  border-color: var(--accent);
}

.status-tag {
  margin-left: auto;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 4px 10px;
  white-space: nowrap;
  align-self: flex-end;
}

/* ── Article list ────────────────────────────────────────── */

ul {
  list-style: none;
}

.post-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 2px solid transparent;
  padding: 20px 24px;
  margin-bottom: 4px;
  transition: background 0.12s, border-color 0.12s, transform 0.12s;
}

.post-item:hover {
  background: var(--surface-2);
  border-left-color: var(--accent);
  transform: translateX(3px);
}

.post-date {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.post-title {
  display: block;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  margin-bottom: 8px;
  line-height: 1.3;
  transition: color 0.12s;
}

.post-item:hover .post-title {
  color: var(--accent);
}

.post-snippet {
  color: var(--text-secondary);
  font-size: 12px;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-family: var(--font-mono);
}

/* ── Footer ──────────────────────────────────────────────── */

footer {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
  text-align: center;
}