/* ============================================================
   Blueline Plumbing Co. — styles.css
   Blueprint / technical-drawing design system.
   Mobile-first: base styles are for phones; @media blocks add
   desktop layout on top.
   ============================================================ */

/* ---------- 1. Design tokens ---------- */
:root {
  --paper: #f5f7f3;          /* drafting paper */
  --grid-line: rgba(30, 74, 116, 0.08);
  --ink: #16283a;            /* dark drafting ink for text on paper */
  --blueprint: #17405f;      /* deep blueprint blue panels */
  --blueprint-2: #0f3049;    /* darker blue for depth */
  --line: #d9e9f7;           /* white-cyan linework on blue */
  --cyan: #7fd1f5;           /* bright cyan accents on blue */
  --safety: #f26a21;         /* safety orange: CTAs */
  --safety-deep: #c94f10;
  --stamp: #c23b2c;          /* inspection stamp red */
  --muted: #5c6b78;
  --muted-blue: #a8c3d9;     /* secondary text on blueprint */

  --font-display: "Big Shoulders", "Arial Narrow", sans-serif;
  --font-body: "IBM Plex Sans", -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", "Courier New", monospace;

  --radius: 6px;
}

/* ---------- 2. Base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  /* graph-paper background */
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 28px 28px;
}

img, svg { max-width: 100%; display: block; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  line-height: 0.95;
  margin: 0 0 0.4em;
  text-wrap: balance;
}

h1 { font-size: clamp(2.6rem, 10vw, 5.2rem); }
h2 { font-size: clamp(1.9rem, 6vw, 3rem); }
h3 { font-size: 1.3rem; letter-spacing: 0.03em; }

p { margin: 0 0 1em; max-width: 62ch; }

a { color: var(--safety-deep); text-underline-offset: 3px; }
a:hover { color: var(--ink); }

:focus-visible {
  outline: 3px solid var(--safety);
  outline-offset: 3px;
  border-radius: 3px;
}

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: #fff; padding: 0.6rem 1rem; z-index: 100;
}
.skip-link:focus { left: 0.5rem; top: 0.5rem; }

.wrap { width: min(100% - 2.25rem, 68rem); margin-inline: auto; }
.sheet { padding-block: 3rem; position: relative; }

/* ---------- 3. Title blocks: every section is a numbered drawing sheet ---------- */
.titleblock {
  display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid currentColor;
  border-left: 4px solid var(--safety);
  padding: 0.45rem 0.7rem;
  margin-bottom: 1.4rem;
  max-width: max-content;
}
.blue .titleblock { color: var(--muted-blue); border-left-color: var(--cyan); }

/* ---------- 4. Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-radius: var(--radius);
  padding: 0.8rem 1.4rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease, color 0.15s ease;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 5px 14px rgba(22, 40, 58, 0.25); }
.btn:active { transform: translateY(0); }

.btn-call { background: var(--safety); color: #fff; }
.btn-call:hover { background: var(--safety-deep); color: #fff; }

.btn-line { border-color: var(--ink); color: var(--ink); background: transparent; }
.btn-line:hover { background: var(--ink); color: var(--paper); }
.blue .btn-line { border-color: var(--line); color: var(--line); }
.blue .btn-line:hover { background: var(--line); color: var(--blueprint); }

.btn-row { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 1.2rem; }

/* ---------- 5. Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(245, 247, 243, 0.95);
  backdrop-filter: blur(6px);
  border-bottom: 2px solid var(--ink);
}
.header-bar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 0.75rem; padding-block: 0.7rem;
}
.brand {
  display: inline-flex; align-items: center; gap: 0.55rem;
  font-family: var(--font-display); font-weight: 800; font-size: 1.3rem;
  text-transform: uppercase; letter-spacing: 0.02em;
  color: var(--ink); text-decoration: none; white-space: nowrap;
}
.brand svg { width: 30px; height: 30px; }
.brand .co { color: var(--safety-deep); }

.header-call { display: none; }

.nav-toggle {
  display: inline-flex; flex-direction: column; justify-content: center;
  gap: 5px; width: 44px; height: 44px; padding: 10px;
  background: none; border: 2px solid var(--ink); border-radius: 6px; cursor: pointer;
}
.nav-toggle span { display: block; height: 2px; background: var(--ink); }

.site-nav {
  display: none;
  position: absolute; left: 0; right: 0; top: 100%;
  background: var(--paper);
  border-bottom: 2px solid var(--ink);
  padding: 0.5rem 1.15rem 1.15rem;
}
.site-nav.is-open { display: block; }
.site-nav ul { list-style: none; margin: 0; padding: 0; }
.site-nav a {
  display: block; padding: 0.65rem 0.2rem;
  font-family: var(--font-display); font-weight: 800; font-size: 1.05rem;
  text-transform: uppercase; letter-spacing: 0.04em;
  text-decoration: none; color: var(--ink);
  border-bottom: 1px solid rgba(22, 40, 58, 0.15);
}
.site-nav a[aria-current="page"] { color: var(--safety-deep); }

/* ---------- 6. Blueprint panels ---------- */
.blue {
  background-color: var(--blueprint);
  background-image:
    linear-gradient(rgba(217, 233, 247, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(217, 233, 247, 0.05) 1px, transparent 1px);
  background-size: 28px 28px;
  color: var(--line);
}
.blue h1, .blue h2, .blue h3 { color: #fff; }
.blue p { color: var(--muted-blue); }
.blue a { color: var(--cyan); }
.blue a:hover { color: #fff; }

/* ---------- 7. Hero ---------- */
.hero { padding-block: 3rem 3.5rem; border-bottom: 2px solid var(--ink); }
.hero .lede { font-size: 1.15rem; max-width: 46ch; }
.hero-grid { display: grid; gap: 2rem; }
.hero .accent { color: var(--cyan); }
.hero-plate {
  font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--muted-blue);
  border: 1px dashed rgba(217, 233, 247, 0.4);
  padding: 0.5rem 0.8rem; margin-top: 1.4rem; max-width: max-content;
}

/* ---------- 8. Diagnostic module (the tool) ---------- */
.diag { border: 2px solid var(--ink); border-radius: var(--radius); overflow: hidden; }
.diag-tabs {
  display: grid; grid-template-columns: 1fr 1fr;
  background: var(--paper);
  border-bottom: 2px solid var(--ink);
}
.diag-tab {
  font-family: var(--font-display); font-weight: 800; font-size: 0.98rem;
  text-transform: uppercase; letter-spacing: 0.03em;
  background: var(--paper); color: var(--ink);
  border: 0; border-right: 1px solid rgba(22,40,58,0.2); border-bottom: 1px solid rgba(22,40,58,0.2);
  padding: 0.8rem 0.5rem; cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
}
.diag-tab:hover { background: #e8ede4; }
.diag-tab[aria-selected="true"] { background: var(--safety); color: #fff; }

.diag-stage { background: var(--blueprint); }
.diag-panel { display: none; }
.diag-panel.active { display: grid; }
.diag-panel { gap: 0; }
.diag-art { padding: 1.25rem 1rem 0.5rem; }
.diag-art svg { width: 100%; height: auto; }
.diag-copy { padding: 0.75rem 1.25rem 1.5rem; color: var(--muted-blue); }
.diag-copy h3 { color: #fff; }
.diag-copy .spec {
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--cyan); margin-bottom: 0.5rem;
}

/* --- schematic linework defaults --- */
.schem { stroke: var(--line); stroke-width: 2.5; fill: none; stroke-linecap: round; stroke-linejoin: round; }
.schem text { font-family: var(--font-mono); font-size: 11px; fill: var(--cyan); stroke: none; letter-spacing: 1px; }
.schem .hot { stroke: var(--safety); }
.schem .fill-blue { fill: rgba(127, 209, 245, 0.25); stroke: none; }
.schem .seal-badge { stroke: var(--stamp); }
.schem .seal-badge text, .schem text.sealtxt { fill: #ff8d7e; }

/* ============================================================
   Diagnostic animations. Each panel loops one "fix" sequence.
   Only transform/opacity/dashoffset animate (cheap on phones).
   Animations run ONLY while a panel is active.
   ============================================================ */

/* --- Tap: drips fall, spanner turns, drips stop, SEALED --- */
@keyframes dripFall {
  0%, 8%   { transform: translateY(0); opacity: 0; }
  12%      { opacity: 1; }
  38%      { transform: translateY(58px); opacity: 1; }
  42%, 100%{ transform: translateY(64px); opacity: 0; }
}
@keyframes dripFall2 {
  0%, 20%  { transform: translateY(0); opacity: 0; }
  24%      { opacity: 1; }
  48%      { transform: translateY(58px); opacity: 1; }
  52%, 100%{ transform: translateY(64px); opacity: 0; }
}
@keyframes spannerTurn {
  0%, 45%  { transform: rotate(0deg); }
  60%      { transform: rotate(-38deg); }
  70%      { transform: rotate(-30deg); }
  100%     { transform: rotate(-30deg); }
}
@keyframes sealPop {
  0%, 72%  { transform: scale(1.6) rotate(-14deg); opacity: 0; }
  80%      { transform: scale(1) rotate(-8deg); opacity: 1; }
  100%     { transform: scale(1) rotate(-8deg); opacity: 1; }
}
.active .anim-drip   { animation: dripFall 4.5s linear infinite; }
.active .anim-drip2  { animation: dripFall2 4.5s linear infinite; }
.active .anim-spanner{ animation: spannerTurn 4.5s ease-in-out infinite; transform-origin: 204px 60px; }
.active .anim-seal   { animation: sealPop 4.5s ease-out infinite; transform-origin: center; transform-box: fill-box; }

/* --- Drain: jetter advances, blockage clears, flow arrows, CLEAR --- */
@keyframes jetterGo {
  0%, 10%  { stroke-dashoffset: 1; }
  45%      { stroke-dashoffset: 0; }
  100%     { stroke-dashoffset: 0; }
}
@keyframes blockGone {
  0%, 40%  { opacity: 1; }
  55%, 100%{ opacity: 0; }
}
@keyframes flowGo {
  0%, 55%  { opacity: 0; transform: translateX(0); }
  62%      { opacity: 1; }
  100%     { opacity: 1; transform: translateX(46px); }
}
.active .anim-jetter { stroke-dasharray: 1; animation: jetterGo 4.5s ease-in-out infinite; }
.active .anim-block  { animation: blockGone 4.5s linear infinite; }
.active .anim-flow   { animation: flowGo 4.5s linear infinite; }

/* --- Hot water: element glows, needle sweeps, HOT --- */
@keyframes elementGlow {
  0%, 15%  { opacity: 0.25; }
  35%, 100%{ opacity: 1; }
}
@keyframes needleSweep {
  0%, 20%  { transform: rotate(-62deg); }
  70%, 100%{ transform: rotate(55deg); }
}
@keyframes steamRise {
  0%, 60%  { opacity: 0; transform: translateY(6px); }
  75%      { opacity: 1; }
  100%     { opacity: 0; transform: translateY(-10px); }
}
.active .anim-element { animation: elementGlow 4.5s linear infinite; }
.active .anim-needle  { animation: needleSweep 4.5s ease-in-out infinite; transform-origin: 268px 84px; }
.active .anim-steam   { animation: steamRise 4.5s linear infinite; }

/* --- Burst: spray bursts, valve turns, clamp slides, ISOLATED --- */
@keyframes sprayJet {
  0%       { opacity: 1; transform: scale(0.6); }
  25%      { opacity: 1; transform: scale(1); }
  48%      { opacity: 1; }
  52%, 100%{ opacity: 0; }
}
@keyframes valveTurn {
  0%, 30%  { transform: rotate(0deg); }
  50%, 100%{ transform: rotate(90deg); }
}
@keyframes clampSlide {
  0%, 55%  { transform: translateY(-46px); opacity: 0; }
  62%      { opacity: 1; }
  72%, 100%{ transform: translateY(0); opacity: 1; }
}
.active .anim-spray { animation: sprayJet 4.5s linear infinite; transform-origin: 150px 92px; }
.active .anim-valve { animation: valveTurn 4.5s ease-in-out infinite; transform-origin: 84px 92px; }
.active .anim-clamp { animation: clampSlide 4.5s ease-out infinite; }

/* ---------- 9. Rubber stamps (the signature detail) ---------- */
.seal {
  display: inline-grid; place-items: center; text-align: center;
  width: 108px; height: 108px;
  border: 3px solid var(--stamp);
  border-radius: 50%;
  color: var(--stamp);
  font-family: var(--font-mono); font-size: 0.62rem; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase; line-height: 1.35;
  padding: 0.6rem;
  rotate: -8deg;
  box-shadow: inset 0 0 0 2px rgba(194, 59, 44, 0.25);
}
.js .seal.reveal-stamp { opacity: 0; transform: scale(1.7) rotate(4deg); }
.js .seal.reveal-stamp.stamped {
  opacity: 1; transform: scale(1) rotate(0deg);
  transition: transform 0.28s cubic-bezier(0.2, 1.4, 0.4, 1), opacity 0.15s ease;
}
.seal-row { display: flex; flex-wrap: wrap; gap: 1.2rem; align-items: center; margin-top: 1.4rem; }

/* ---------- 10. Spec cards ---------- */
.spec-grid { display: grid; gap: 1rem; margin-top: 1.4rem; }
.spec-card {
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.65);
  padding: 1.3rem;
}
.spec-card .label {
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--safety-deep); margin-bottom: 0.4rem;
}
.spec-card p { margin: 0; color: var(--muted); }

/* ---------- 11. Service rows ---------- */
.svc-grid { display: grid; gap: 1rem; margin-top: 1.4rem; }
.svc {
  display: grid; gap: 0.9rem;
  border: 2px solid var(--ink); border-radius: var(--radius);
  background: rgba(255,255,255,0.65);
  padding: 1.3rem;
  text-decoration: none; color: var(--ink);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
a.svc:hover { transform: translateY(-3px); box-shadow: 0 8px 18px rgba(22,40,58,0.18); color: var(--ink); }
.svc svg { width: 64px; height: 64px; }
.svc .schem { stroke: var(--ink); }
.svc h3 { margin-bottom: 0.15rem; }
.svc p { margin: 0; color: var(--muted); font-size: 0.98rem; }
.svc .from {
  font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.08em;
  color: var(--safety-deep); text-transform: uppercase;
}

/* ---------- 12. Emergency band ---------- */
.emergency {
  background: var(--safety);
  color: #fff;
  border-block: 2px solid var(--ink);
}
.emergency h2, .emergency p { color: #fff; }
.emergency .btn-call { background: var(--ink); }
.emergency .btn-call:hover { background: #0d1723; }

/* ---------- 13. Forms ---------- */
.form-grid { display: grid; gap: 1rem; max-width: 34rem; }
label {
  font-family: var(--font-mono); font-size: 0.75rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  display: block; margin-bottom: 0.35rem;
}
input, textarea, select {
  width: 100%; font: inherit; color: var(--ink);
  background: #fff; border: 2px solid var(--ink); border-radius: var(--radius);
  padding: 0.7rem 0.85rem;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--safety); outline: 3px solid rgba(242, 106, 33, 0.3);
}
.form-grid button { justify-self: start; }
.hidden-field { position: absolute; left: -9999px; }

.hours { width: 100%; max-width: 26rem; border-collapse: collapse; }
.hours th, .hours td { text-align: left; padding: 0.5rem 0.2rem; border-bottom: 1px solid rgba(22,40,58,0.2); }
.map-frame { width: 100%; height: 340px; border: 2px solid var(--ink); border-radius: var(--radius); }

/* ---------- 14. Suburb chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.8rem; padding: 0; list-style: none; }
.chips li {
  font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.06em;
  border: 1.5px solid var(--ink); border-radius: 999px; padding: 0.3rem 0.75rem;
}

/* ---------- 15. Footer ---------- */
.site-footer {
  background: var(--blueprint-2);
  color: var(--muted-blue);
  border-top: 2px solid var(--ink);
  padding-block: 2.5rem 5.5rem; /* extra bottom room for the mobile call bar */
  font-size: 0.95rem;
}
.footer-grid { display: grid; gap: 1.5rem; }
.site-footer h3 { color: #fff; font-size: 1.1rem; }
.site-footer a { color: var(--cyan); }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 0.4rem; }
.footer-legal { margin-top: 1.8rem; font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.06em; }

/* ---------- 16. Mobile call bar ---------- */
.callbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
  display: flex;
  background: var(--safety);
  border-top: 2px solid var(--ink);
}
.callbar a {
  flex: 1; text-align: center; text-decoration: none;
  font-family: var(--font-display); font-weight: 800; font-size: 1.1rem;
  text-transform: uppercase; letter-spacing: 0.04em;
  color: #fff; padding: 0.9rem 1rem;
}

/* ---------- 17. Scroll reveals (gated behind .js so no-JS users see everything) ---------- */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.6s ease, transform 0.6s ease; }
.js .reveal.in-view { opacity: 1; transform: none; }

/* ---------- 18. Desktop (820px+) ---------- */
@media (min-width: 820px) {
  .sheet { padding-block: 4.5rem; }

  .nav-toggle { display: none; }
  .site-nav { display: flex; position: static; border: 0; padding: 0; background: none; align-items: center; }
  .site-nav ul { display: flex; gap: 1.6rem; }
  .site-nav a { border: 0; padding: 0.2rem 0; }
  .header-call { display: inline-flex; margin-left: 1.6rem; padding: 0.5rem 1rem; font-size: 0.95rem; }

  .hero-grid { grid-template-columns: 1.2fr 0.8fr; align-items: center; gap: 3rem; }

  .diag-tabs { grid-template-columns: repeat(4, 1fr); }
  .diag-panel.active { grid-template-columns: 1.1fr 0.9fr; align-items: center; }
  .diag-art { padding: 2rem 1.5rem; }
  .diag-copy { padding: 2rem 2rem 2rem 0.5rem; }

  .spec-grid { grid-template-columns: repeat(3, 1fr); }
  .svc-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
  .site-footer { padding-bottom: 2.5rem; }

  .contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 3rem; align-items: start; }
  .map-frame { height: 420px; }

  .callbar { display: none; } /* desktop header has the call button */
}

/* ---------- 19. Reduced motion: show the FIXED end-state, no loops ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
  .js .reveal { opacity: 1; transform: none; }
  .js .seal.reveal-stamp { opacity: 1; transform: none; }

  /* Diagnostic panels: static "after" schematic */
  .anim-drip, .anim-drip2 { opacity: 0 !important; }
  .anim-spanner { transform: rotate(-30deg); }
  .anim-seal { opacity: 1 !important; }
  .anim-jetter { stroke-dasharray: none; }
  .anim-block { opacity: 0 !important; }
  .anim-flow { opacity: 1 !important; }
  .anim-element { opacity: 1 !important; }
  .anim-needle { transform: rotate(55deg); }
  .anim-steam { opacity: 0 !important; }
  .anim-spray { opacity: 0 !important; }
  .anim-valve { transform: rotate(90deg); }
  .anim-clamp { transform: none !important; opacity: 1 !important; }
}