/* The Pump Room — Datasheet Petrol theme
   Petrol teal + gauge amber, IBM Plex family, sharp datasheet edges. */

:root {
  --petrol-900: #082730;
  --petrol-800: #0b3340;
  --petrol-700: #114b5f;
  --petrol-500: #19657d;
  --petrol-100: #d8e6ea;
  --petrol-050: #eef4f5;
  --amber-500: #d9920f;
  --amber-600: #b87a0a;
  --amber-100: #f8e8c8;
  --ink-900: #14211f;
  --ink-600: #43555a;
  --paper: #fbfaf7;
  --rule: #c2d2d7;
  --mono: "IBM Plex Mono", "Courier New", monospace;
  --sans: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --serif: "IBM Plex Serif", Georgia, serif;
}

html {
  background: var(--paper);
}

body {
  font-family: var(--serif);
  color: var(--ink-900);
  background: var(--paper);
  line-height: 1.7;
}

img {
  max-width: 100%;
  height: auto;
}

/* ---------- Top hairline + nav ---------- */

.pr-topline {
  height: 4px;
  background: linear-gradient(90deg, var(--amber-500) 0 25%, var(--petrol-700) 25% 100%);
}

.pr-nav {
  background: var(--petrol-900);
  border-bottom: 1px solid var(--petrol-700);
}

.pr-nav .navbar-brand .navbar-item {
  color: #fff;
}

.pr-brand-mark {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  color: var(--amber-500);
  display: block;
  text-transform: uppercase;
}

.pr-brand-name {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
  color: #fff;
  display: block;
  line-height: 1.1;
}

.pr-nav .navbar-item,
.pr-nav .navbar-link {
  font-family: var(--sans);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--petrol-100);
  background: transparent;
}

.pr-nav a.navbar-item:hover,
.pr-nav a.navbar-item:focus,
.pr-nav a.navbar-item.is-current {
  background: var(--petrol-800);
  color: #fff;
  box-shadow: inset 0 -3px 0 var(--amber-500);
}

.pr-nav .navbar-burger {
  color: #fff;
}

.pr-nav .navbar-burger:hover {
  background: var(--petrol-800);
}

@media screen and (max-width: 1023px) {
  .pr-nav .navbar-menu {
    background: var(--petrol-900);
    box-shadow: 0 8px 16px rgba(8, 39, 48, 0.35);
  }
}

/* ---------- Homepage hero ---------- */

.pr-hero {
  position: relative;
  background-color: var(--petrol-900);
  background-size: cover;
  background-position: center;
  border-bottom: 4px solid var(--amber-500);
}

.pr-hero-home {
  background-image: url("/images/hero-home.jpg");
}

.pr-hero-scrim {
  background: linear-gradient(180deg, rgba(8, 39, 48, 0.55) 0%, rgba(8, 39, 48, 0.82) 100%);
  padding: 6.5rem 1.5rem;
}

.pr-hero-kicker {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--amber-500);
  margin-bottom: 0.75rem;
}

.pr-hero-title {
  font-family: var(--sans);
  font-weight: 700;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.08;
  color: #fff;
  max-width: 17em;
}

.pr-hero-sub {
  font-family: var(--serif);
  font-size: 1.15rem;
  color: var(--petrol-100);
  max-width: 38em;
  margin-top: 1rem;
}

.pr-hero-actions {
  margin-top: 1.75rem;
}

.pr-btn {
  font-family: var(--sans);
  font-weight: 600;
  border-radius: 0;
  border: 2px solid var(--amber-500);
  background: var(--amber-500);
  color: var(--petrol-900);
  padding: 0.6em 1.4em;
  display: inline-block;
  margin-right: 0.75rem;
  margin-bottom: 0.5rem;
  transition: background 0.15s ease, color 0.15s ease;
}

.pr-btn:hover {
  background: transparent;
  color: var(--amber-500);
}

.pr-btn.is-ghost {
  background: transparent;
  border-color: var(--petrol-100);
  color: #fff;
}

.pr-btn.is-ghost:hover {
  border-color: var(--amber-500);
  color: var(--amber-500);
}

/* ---------- Page band (interior pages) ---------- */

.pr-band {
  background: var(--petrol-900);
  border-bottom: 4px solid var(--amber-500);
  padding: 1.4rem 0;
}

.pr-band .pr-crumb {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--amber-500);
}

/* ---------- Article body ---------- */

.pr-main {
  padding: 3rem 1.5rem 4rem;
}

.pr-article {
  max-width: 50rem;
  margin: 0 auto;
}

.pr-article h1 {
  font-family: var(--sans);
  font-weight: 700;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.15;
  color: var(--petrol-900);
  margin-bottom: 1.25rem;
}

.pr-article h2 {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--petrol-800);
  margin-top: 2.4rem;
  margin-bottom: 0.8rem;
  padding-top: 1.1rem;
  border-top: 2px solid var(--rule);
  position: relative;
}

.pr-article h2::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 3.5rem;
  height: 2px;
  background: var(--amber-500);
}

.pr-article h3 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--petrol-800);
  margin-top: 1.6rem;
  margin-bottom: 0.5rem;
}

.pr-article p {
  margin-bottom: 1.05rem;
}

.pr-article a {
  color: var(--petrol-500);
  text-decoration: underline;
  text-decoration-color: var(--amber-500);
  text-underline-offset: 3px;
  font-weight: 500;
}

.pr-article a:hover {
  color: var(--amber-600);
}

.pr-article strong {
  color: var(--petrol-900);
}

.pr-article ul,
.pr-article ol {
  margin: 0 0 1.05rem 1.5rem;
}

.pr-article li {
  margin-bottom: 0.4rem;
}

/* ---------- Figure plates ---------- */

.pr-plate {
  margin: 1.8rem 0 2.2rem;
  border: 1px solid var(--rule);
  background: #fff;
  padding: 0.6rem;
}

.pr-plate img {
  display: block;
  width: 100%;
}

.pr-plate figcaption {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-600);
  padding: 0.6rem 0.2rem 0.1rem;
  border-top: 1px solid var(--rule);
  margin-top: 0.6rem;
}

.pr-plate figcaption .pr-fig-no {
  color: var(--amber-600);
  font-weight: 500;
}

/* ---------- Section index cards (homepage) ---------- */

.pr-index {
  background: var(--petrol-050);
  border-top: 1px solid var(--rule);
  padding: 3.5rem 1.5rem 4rem;
}

.pr-index-label {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--petrol-500);
  margin-bottom: 1.6rem;
  text-align: center;
}

.pr-card {
  display: block;
  height: 100%;
  background: #fff;
  border: 1px solid var(--rule);
  border-top: 3px solid var(--petrol-700);
  padding: 1.4rem 1.4rem 1.5rem;
  color: var(--ink-900);
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.pr-card:hover {
  border-top-color: var(--amber-500);
  transform: translateY(-3px);
  color: var(--ink-900);
}

.pr-card .pr-card-no {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--amber-600);
  display: block;
  margin-bottom: 0.5rem;
}

.pr-card h3 {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 1.08rem;
  color: var(--petrol-900);
  margin-bottom: 0.45rem;
}

.pr-card p {
  font-size: 0.92rem;
  color: var(--ink-600);
  line-height: 1.55;
}

/* ---------- Contact form ---------- */

.pr-form {
  margin-top: 2rem;
  border: 1px solid var(--rule);
  background: #fff;
  padding: 1.8rem;
}

.pr-form label {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--petrol-800);
  display: block;
  margin-bottom: 0.3rem;
}

.pr-form input,
.pr-form textarea {
  font-family: var(--serif);
  font-size: 1rem;
  width: 100%;
  border: 1px solid var(--rule);
  border-radius: 0;
  background: var(--paper);
  padding: 0.6em 0.8em;
  margin-bottom: 1.1rem;
  color: var(--ink-900);
}

.pr-form input:focus,
.pr-form textarea:focus {
  outline: 2px solid var(--petrol-500);
  outline-offset: 0;
}

.pr-form button {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid var(--petrol-700);
  border-radius: 0;
  background: var(--petrol-700);
  color: #fff;
  padding: 0.6em 1.6em;
  cursor: pointer;
}

.pr-form button:hover {
  background: var(--petrol-900);
}

.pr-form-note {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--ink-600);
  margin-top: 0.4rem;
}

/* ---------- 404 ---------- */

.pr-404 {
  text-align: center;
  padding: 5rem 1.5rem;
}

.pr-404 .pr-404-code {
  font-family: var(--mono);
  font-size: clamp(4rem, 12vw, 7rem);
  color: var(--petrol-100);
  font-weight: 500;
  line-height: 1;
}

/* ---------- Footer ---------- */

.pr-footer {
  background: var(--petrol-900);
  color: var(--petrol-100);
  padding: 3.5rem 1.5rem 2rem;
  border-top: 4px solid var(--amber-500);
}

.pr-footer h4 {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--amber-500);
  margin-bottom: 0.9rem;
}

.pr-footer p {
  font-size: 0.92rem;
  line-height: 1.65;
}

.pr-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.pr-footer li {
  margin-bottom: 0.45rem;
}

.pr-footer a {
  color: var(--petrol-100);
  font-family: var(--sans);
  font-size: 0.92rem;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.pr-footer a:hover {
  color: #fff;
  border-bottom-color: var(--amber-500);
}

.pr-disclaimer {
  border: 1px solid var(--petrol-700);
  background: var(--petrol-800);
  font-family: var(--sans);
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--petrol-100);
  padding: 1rem 1.2rem;
  margin-top: 2.5rem;
}

.pr-colophon {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--petrol-100);
  text-align: center;
  margin-top: 2rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--petrol-700);
}