/* NaaS styling. RTM brand palette. Keep it light, the host machine is a Celeron. */

:root {
  --rtm-teal: #4A6B7C;
  --rtm-teal-dark: #3A5563;
  --rtm-teal-light: #5D7D8C;
  --rtm-orange: #D4844C;
  --rtm-orange-dark: #B8703D;
  --rtm-orange-light: #E09A62;
  --rtm-cream: #E8DCC8;
  --rtm-cream-light: #F5EDE0;
  --rtm-cream-dark: #D4C9B5;
  --rtm-sky: #B4D2E0;
  --rtm-sky-light: #D5E6EF;
  --rtm-sky-dark: #8FB8CE;
  --rtm-logo-blue: #305161;
  --rtm-olive: #7A9B6D;
  --rtm-olive-dark: #628556;
  --rtm-charcoal: #3D4543;
  --rtm-charcoal-light: #5A605E;
  --rtm-raspberry: #C4454D;
  --rtm-code-bg: #2D3B3A;
  --rtm-code-text: #E8DCC8;
  --rtm-border: #C4B8A4;

  --radius: 6px;
  --shadow: 0 2px 14px rgba(61, 69, 67, 0.08);
  --shadow-lg: 0 8px 32px rgba(61, 69, 67, 0.14);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--rtm-cream-light);
  color: var(--rtm-charcoal);
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.55;
}

a { color: var(--rtm-teal); text-decoration: none; }
a:hover { color: var(--rtm-orange); }

/* -------------------------------------------------- Header */
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.1rem 2rem;
  background: var(--rtm-logo-blue);
  color: var(--rtm-cream-light);
  border-bottom: 3px solid var(--rtm-orange);
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  color: var(--rtm-cream-light);
}
.brand:hover { color: var(--rtm-orange-light); }
.brand-logo {
  height: 42px;
  width: auto;
  display: block;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name {
  font-family: 'Fraunces', serif;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
}
.brand-tagline {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--rtm-orange-light);
}
.site-nav a {
  color: var(--rtm-cream-light);
  margin-left: 1.5rem;
  font-size: 0.95rem;
}
.site-nav a:hover { color: var(--rtm-orange-light); }

/* -------------------------------------------------- Hero */
.hero {
  text-align: center;
  padding: 5rem 1.5rem 4rem;
  background:
    radial-gradient(circle at 30% 20%, rgba(212, 132, 76, 0.08), transparent 60%),
    radial-gradient(circle at 75% 80%, rgba(74, 107, 124, 0.08), transparent 60%),
    var(--rtm-cream-light);
  border-bottom: 1px solid var(--rtm-cream-dark);
}
.eyebrow {
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  font-size: 0.78rem;
  color: var(--rtm-teal);
  margin: 0 0 0.6rem;
}
.hero h1 {
  font-family: 'Fraunces', serif;
  font-weight: 900;
  font-size: clamp(5rem, 14vw, 10rem);
  line-height: 0.95;
  margin: 0 0 1rem;
  color: var(--rtm-charcoal);
  letter-spacing: -0.03em;
}
.reason-line {
  font-family: 'Fraunces', serif;
  font-size: clamp(1.1rem, 2vw, 1.45rem);
  color: var(--rtm-charcoal-light);
  max-width: 640px;
  margin: 0 auto 2rem;
  min-height: 2.2em;
}
.no-button {
  display: inline-block;
  padding: 1rem 2.25rem;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  background: var(--rtm-orange);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform 0.08s ease, background 0.15s ease, box-shadow 0.15s ease;
}
.no-button:hover { background: var(--rtm-orange-dark); box-shadow: var(--shadow-lg); }
.no-button:active { transform: translateY(1px); }
.no-button:disabled { opacity: 0.6; cursor: progress; }
.served {
  margin-top: 1.8rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.86rem;
  color: var(--rtm-charcoal-light);
}
.dot-sep { margin: 0 0.6rem; color: var(--rtm-border); }

/* -------------------------------------------------- Panels */
.panel {
  max-width: 1100px;
  margin: 0 auto;
  padding: 4rem 1.5rem;
}
.panel h2 {
  font-family: 'Fraunces', serif;
  font-weight: 700;
  font-size: 2rem;
  margin: 0 0 0.5rem;
  color: var(--rtm-charcoal);
}
.panel-lead {
  max-width: 700px;
  color: var(--rtm-charcoal-light);
  margin: 0 0 2rem;
}
.grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.card {
  background: #fff;
  border: 1px solid var(--rtm-cream-dark);
  border-radius: var(--radius);
  padding: 1.5rem 1.6rem;
  box-shadow: var(--shadow);
}
.card h3 {
  font-family: 'Fraunces', serif;
  font-weight: 600;
  font-size: 1.15rem;
  margin: 0 0 1rem;
  color: var(--rtm-teal);
  padding-bottom: 0.6rem;
  border-bottom: 2px solid var(--rtm-sky);
}

/* -------------------------------------------------- Spec lists */
.spec {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.45rem 1.1rem;
  margin: 0;
  font-size: 0.92rem;
}
.spec dt {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--rtm-charcoal-light);
  align-self: center;
}
.spec dd {
  margin: 0;
  color: var(--rtm-charcoal);
  font-weight: 500;
}
.spec.small { font-size: 0.86rem; margin-top: 1rem; }

/* -------------------------------------------------- Gauges */
.gauge {
  display: grid;
  grid-template-columns: 60px 1fr 60px;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.7rem;
}
.gauge-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--rtm-charcoal-light);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.gauge-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.92rem;
  color: var(--rtm-charcoal);
  text-align: right;
}
.bar {
  background: var(--rtm-cream);
  border-radius: 99px;
  height: 10px;
  overflow: hidden;
  position: relative;
}
.bar-fill {
  height: 100%;
  width: 0%;
  border-radius: 99px;
  transition: width 0.6s ease;
  background: var(--rtm-teal);
}
.bar-cpu { background: linear-gradient(90deg, var(--rtm-sky), var(--rtm-teal), var(--rtm-orange)); }
.bar-ram { background: linear-gradient(90deg, var(--rtm-sky-dark), var(--rtm-teal), var(--rtm-raspberry)); }

/* -------------------------------------------------- Lifespan */
.lifespan-big {
  font-family: 'Fraunces', serif;
  font-size: 3.4rem;
  line-height: 1;
  margin: 0.4rem 0 0;
  color: var(--rtm-orange);
  font-weight: 700;
}
.lifespan-unit {
  font-size: 1.2rem;
  color: var(--rtm-charcoal-light);
  font-weight: 500;
}
.muted { color: var(--rtm-charcoal-light); font-size: 0.9rem; margin: 0.2rem 0 0; }

/* -------------------------------------------------- CTA + Footer */
.cta-row { margin-top: 2rem; }
.btn {
  display: inline-block;
  padding: 0.8rem 1.4rem;
  background: var(--rtm-teal);
  color: #fff;
  border-radius: var(--radius);
  font-weight: 600;
}
.btn:hover { background: var(--rtm-teal-dark); color: #fff; }

footer {
  text-align: center;
  padding: 2rem 1.5rem 3rem;
  color: var(--rtm-charcoal-light);
  font-size: 0.88rem;
}

/* -------------------------------------------------- Mobile */
@media (max-width: 640px) {
  .site-header { padding: 0.85rem 1rem; }
  .brand-logo { height: 34px; }
  .site-nav a { margin-left: 0.9rem; font-size: 0.85rem; }
  .hero { padding: 3.5rem 1rem 3rem; }
  .panel { padding: 2.75rem 1rem; }
  .spec { grid-template-columns: 1fr; gap: 0.1rem 0; }
  .spec dd { margin-bottom: 0.6rem; }
}

/* -------------------------------------------------- Animation on reason change */
.reason-line.flash {
  animation: flash 0.35s ease;
}
@keyframes flash {
  0% { opacity: 0.2; transform: translateY(6px); }
  100% { opacity: 1; transform: translateY(0); }
}