/* ThermalCore — Custom Styles */
@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=IBM+Plex+Mono:wght@400;500;600&family=Outfit:wght@300;400;500;600&display=swap');

:root {
  --bg:        #0c0c0e;
  --surface:   #141418;
  --surface2:  #1c1c22;
  --border:    #2a2a32;
  --text:      #e8e8f0;
  --muted:     #7070888;
  --safe:      #22d47e;
  --warm:      #ffaa00;
  --hot:       #ff6422;
  --critical:  #ff2244;
  --accent:    #00c8ff;
  --glow-safe: rgba(34,212,126,0.25);
  --glow-warm: rgba(255,170,0,0.25);
  --glow-hot:  rgba(255,100,34,0.25);
  --glow-crit: rgba(255,34,68,0.25);
}

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

html { scroll-behavior: smooth; }

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: 'Outfit', sans-serif;
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Typography ───────────────────────────── */
.font-display { font-family: 'Bebas Neue', sans-serif; letter-spacing: 0.03em; }
.font-mono    { font-family: 'IBM Plex Mono', monospace; }

/* ── Noise texture overlay ────────────────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  opacity: 0.022;
  pointer-events: none;
  z-index: 9999;
}

/* ── Grid scanline accent ─────────────────── */
.scanlines {
  background-image: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,200,255,0.015) 2px,
    rgba(0,200,255,0.015) 4px
  );
}

/* ── Navigation ───────────────────────────── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(12,12,14,0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.5rem;
  letter-spacing: 0.06em;
  color: var(--text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--hot);
  box-shadow: 0 0 8px var(--hot);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%,100% { opacity: 1; box-shadow: 0 0 8px var(--hot); }
  50%      { opacity: 0.5; box-shadow: 0 0 16px var(--hot); }
}

.nav-link {
  color: #8888a0;
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color 0.2s;
}
.nav-link:hover { color: var(--text); }

/* ── Hero ─────────────────────────────────── */
.hero {
  position: relative;
  overflow: hidden;
  padding: 5rem 0 4rem;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.35;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 100%);
}

.hero-glow {
  position: absolute;
  top: -80px; left: 50%;
  transform: translateX(-50%);
  width: 600px; height: 300px;
  background: radial-gradient(ellipse, rgba(255,100,34,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.75rem;
  background: rgba(255,100,34,0.1);
  border: 1px solid rgba(255,100,34,0.3);
  border-radius: 100px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  color: var(--hot);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.hero-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(3.5rem, 9vw, 7.5rem);
  line-height: 0.92;
  letter-spacing: 0.01em;
  margin-bottom: 1.25rem;
}

.hero-title .accent { color: var(--hot); }

.hero-sub {
  font-size: 1.05rem;
  color: #8888a0;
  max-width: 480px;
  line-height: 1.65;
}

/* ── Temp range strip ─────────────────────── */
.temp-strip {
  display: flex;
  align-items: stretch;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
}

.temp-strip-segment {
  flex: 1;
  padding: 0.6rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

/* ── Cards ────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: border-color 0.2s, transform 0.2s;
}
.card:hover {
  border-color: #3a3a48;
  transform: translateY(-2px);
}

.card-tool {
  position: relative;
  overflow: hidden;
}
.card-tool::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--hot), var(--accent));
}

/* ── Section labels ───────────────────────── */
.section-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

/* ── GPU Checker Tool ─────────────────────── */
.checker-container {
  max-width: 640px;
  margin: 0 auto;
}

.input-group label {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #8888a0;
  margin-bottom: 0.5rem;
}

.input-field {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  color: var(--text);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  appearance: none;
  -webkit-appearance: none;
}
.input-field:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,200,255,0.12);
}

.temp-input-wrap {
  position: relative;
}
.temp-input-wrap .unit {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.9rem;
  color: #8888a0;
  pointer-events: none;
}

.btn-check {
  width: 100%;
  padding: 0.9rem 1rem;
  background: var(--hot);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.25rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
}
.btn-check:hover {
  background: #ff7a44;
  box-shadow: 0 4px 20px rgba(255,100,34,0.4);
  transform: translateY(-1px);
}
.btn-check:active { transform: translateY(0); }

/* ── Result box ───────────────────────────── */
.result-box {
  border-radius: 10px;
  padding: 1.5rem;
  border: 1px solid;
  display: none;
  animation: fadeSlide 0.35s ease;
}
.result-box.show { display: block; }

@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.result-box.safe     { background: rgba(34,212,126,0.06);  border-color: rgba(34,212,126,0.3);  }
.result-box.warm     { background: rgba(255,170,0,0.06);   border-color: rgba(255,170,0,0.3);   }
.result-box.hot      { background: rgba(255,100,34,0.06);  border-color: rgba(255,100,34,0.3);  }
.result-box.critical { background: rgba(255,34,68,0.06);   border-color: rgba(255,34,68,0.3);   }

.result-status {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 3rem;
  letter-spacing: 0.05em;
  line-height: 1;
}
.safe     .result-status { color: var(--safe); }
.warm     .result-status { color: var(--warm); }
.hot      .result-status { color: var(--hot); }
.critical .result-status { color: var(--critical); }

.result-temp-display {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 4.5rem;
  font-weight: 600;
  line-height: 1;
}
.safe     .result-temp-display { color: var(--safe); }
.warm     .result-temp-display { color: var(--warm); }
.hot      .result-temp-display { color: var(--hot); }
.critical .result-temp-display { color: var(--critical); }

.suggestion-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  font-size: 0.9rem;
  color: #b0b0c8;
}
.suggestion-item:last-child { border-bottom: none; }
.suggestion-item .dot {
  flex-shrink: 0;
  width: 6px; height: 6px;
  border-radius: 50%;
  margin-top: 0.4em;
}
.safe     .dot { background: var(--safe); }
.warm     .dot { background: var(--warm); }
.hot      .dot { background: var(--hot); }
.critical .dot { background: var(--critical); }

/* ── Thermometer visual ───────────────────── */
.thermo-bar {
  width: 100%;
  height: 8px;
  background: var(--surface2);
  border-radius: 100px;
  overflow: hidden;
  position: relative;
  margin: 0.75rem 0;
}
.thermo-fill {
  height: 100%;
  border-radius: 100px;
  transition: width 0.6s cubic-bezier(0.34, 1.2, 0.64, 1);
}

/* ── Article cards ────────────────────────── */
.article-card {
  text-decoration: none;
  display: block;
}
.article-card:hover .article-title { color: var(--accent); }

.article-tag {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
}

/* ── Footer ───────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
}

/* ── Article content ──────────────────────── */
.article-body h2 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.75rem;
  letter-spacing: 0.03em;
  color: var(--text);
  margin: 2rem 0 0.75rem;
}

.article-body h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  margin: 1.5rem 0 0.5rem;
}

.article-body p {
  color: #b0b0c8;
  margin-bottom: 1rem;
  line-height: 1.75;
}

.article-body ul {
  list-style: none;
  margin: 0.75rem 0 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.article-body ul li {
  color: #b0b0c8;
  padding-left: 1.25rem;
  position: relative;
  line-height: 1.65;
}
.article-body ul li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--hot);
  font-size: 0.7rem;
  top: 0.2em;
}

.article-body strong { color: var(--text); font-weight: 600; }

.temp-table {
  width: 100%;
  border-collapse: collapse;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.85rem;
  margin: 1rem 0;
}
.temp-table th {
  text-align: left;
  padding: 0.6rem 0.75rem;
  background: var(--surface2);
  color: #8888a0;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
}
.temp-table td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid rgba(42,42,50,0.6);
  color: #b0b0c8;
}
.temp-table tr:last-child td { border-bottom: none; }

.callout {
  background: rgba(0,200,255,0.06);
  border: 1px solid rgba(0,200,255,0.2);
  border-left: 3px solid var(--accent);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  margin: 1.25rem 0;
  color: #b0b0c8;
  font-size: 0.9rem;
  line-height: 1.65;
}

/* ── Responsive ───────────────────────────── */
@media (max-width: 640px) {
  .hero-title { font-size: 3.5rem; }
  .result-temp-display { font-size: 3rem; }
}