/* ============================================================
   CLEAR GROUND SEPTIC — concept demo
   Character: deep ground. Soil-dark stage, parchment type,
   drifting topographic contours, moss and ember glows.
   ============================================================ */

@font-face {
  font-family: "Archivo";
  src: url("../../assets/fonts/archivo-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Archivo";
  src: url("../../assets/fonts/archivo-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Archivo";
  src: url("../../assets/fonts/archivo-700.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("../../assets/fonts/plex-mono-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("../../assets/fonts/plex-mono-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

:root {
  --deep: #12100c;
  --deep-deeper: #0e0c09;
  --surface: rgba(243, 234, 216, 0.045);
  --surface-raise: rgba(243, 234, 216, 0.075);
  --line: rgba(243, 234, 216, 0.14);
  --line-soft: rgba(243, 234, 216, 0.07);
  --text: #f3ead8;
  --muted: #a89b85;
  --rust: #9a4a24;
  --rust-bright: #e0814f;
  --rust-glow: rgba(224, 129, 79, 0.3);
  --paper: #f3ead8;
  --moss: #4a5d3a;
  --moss-bright: #9db87a;
  --moss-glow: rgba(157, 184, 122, 0.26);
  --white: #ffffff;
  --ink: #12100c;
  --lift: 0 24px 56px rgba(5, 4, 2, 0.6);
  --body: "Archivo", "Segoe UI", Tahoma, sans-serif;
  --utility: "IBM Plex Mono", Consolas, "Courier New", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--deep);
  color: var(--text);
  font-family: var(--body);
  font-size: 18px;
  line-height: 1.65;
}

main > section > *,
header > *,
footer > * {
  min-width: 0;
}

h1, h2, h3, p, li, a, strong, span, small, b, dt, dd {
  overflow-wrap: break-word;
}

a {
  color: inherit;
}

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

.skip-link {
  position: fixed;
  top: 0;
  left: 1rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--paper);
  color: var(--ink);
  transform: translateY(-120%);
}

.skip-link:focus {
  transform: translateY(0);
}

:focus-visible {
  outline: 3px solid var(--rust-bright);
  outline-offset: 4px;
}

::selection {
  background: rgba(243, 234, 216, 0.85);
  color: var(--ink);
}

/* ---------- type ---------- */

h1, h2, h3 {
  margin-top: 0;
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.028em;
}

h1 {
  max-width: 640px;
  margin-bottom: 1.5rem;
  font-size: clamp(2.5rem, 5.4vw, 4.4rem);
}

h1 .accent,
h2 .accent {
  color: var(--rust-bright);
}

h2 {
  font-size: clamp(1.85rem, 3.7vw, 3rem);
}

h3 {
  font-size: clamp(1.2rem, 2.2vw, 1.5rem);
}

.field-label {
  margin: 0 0 1rem;
  color: var(--rust-bright);
  font-family: var(--utility);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.field-label::before {
  content: "// ";
  color: var(--line);
}

/* ---------- disclosure + header ---------- */

.concept-note {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  padding: 0.34rem 5vw;
  background: rgba(243, 234, 216, 0.06);
  border-bottom: 1px solid var(--line-soft);
  font-family: var(--utility);
  font-size: 0.68rem;
}

.concept-note strong {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text);
}

.concept-note span {
  color: var(--muted);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  width: min(1180px, calc(100% - 3rem));
  margin-inline: auto;
  min-height: 84px;
  border-bottom: 1px solid var(--line-soft);
  background: rgba(18, 16, 12, 0.72);
  -webkit-backdrop-filter: blur(14px) saturate(1.15);
  backdrop-filter: blur(14px) saturate(1.15);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  text-decoration: none;
}

.wordmark-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  background: var(--moss-bright);
  color: var(--ink);
  font-family: var(--utility);
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: 50%;
  box-shadow: 0 0 24px var(--moss-glow);
}

.wordmark-name {
  display: flex;
  flex-direction: column;
  font-weight: 700;
  font-size: 0.98rem;
  line-height: 1.15;
  letter-spacing: 0.06em;
}

.wordmark-name small {
  color: var(--muted);
  font-family: var(--utility);
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

nav {
  display: flex;
  align-items: center;
  gap: 1.6rem;
}

nav a {
  font-family: var(--utility);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--muted);
}

nav a:not(.quote-link):hover {
  color: var(--text);
}

.quote-link {
  padding: 0.62rem 1rem;
  background: var(--rust-bright);
  color: var(--ink);
  font-family: var(--body);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: 999px;
  box-shadow: 0 0 22px var(--rust-glow);
  transition: background 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.quote-link:hover {
  background: var(--paper);
  transform: translateY(-1px);
  box-shadow: 0 0 30px rgba(243, 234, 216, 0.35);
}

main > section,
footer {
  width: min(1180px, calc(100% - 3rem));
  margin-inline: auto;
}

/* ---------- hero: canvas stage ---------- */

.hero {
  position: relative;
  display: block;
  padding: 0 0 clamp(3.5rem, 8vh, 6rem);
  overflow: hidden;
}

.field-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
  display: block;
}

.hero-copy {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(330px, 0.98fr);
  gap: clamp(2.5rem, 5vw, 5rem);
  align-items: center;
  width: min(1180px, calc(100% - 3rem));
  margin-inline: auto;
  min-height: max(78vh, 620px);
  padding-block: clamp(3rem, 7vh, 5rem) 0;
  text-shadow: 0 2px 26px rgba(10, 8, 5, 0.85);
}

.lead {
  max-width: 580px;
  color: var(--muted);
  font-size: clamp(1.02rem, 1.9vw, 1.25rem);
}

.solid-action {
  display: inline-flex;
  align-items: center;
  min-height: 54px;
  margin: 1.8rem 0 1rem;
  padding: 0.8rem 1.6rem;
  background: var(--moss-bright);
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--ink);
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  box-shadow: 0 0 28px var(--moss-glow);
  transition: background 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.solid-action:hover {
  background: var(--paper);
  color: var(--ink);
  transform: translateY(-2px);
  box-shadow: 0 0 36px rgba(243, 234, 216, 0.4);
}

.hero-note {
  margin: 0;
  color: var(--muted);
  font-family: var(--utility);
  font-size: 0.68rem;
}

/* ---------- cutaway figure (glass card) ---------- */

.ground-cutaway {
  position: relative;
}

.cutaway-frame {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--lift);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  overflow: hidden;
}

.cutaway-head,
.cutaway-foot {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.5rem 1rem;
  font-family: var(--utility);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.cutaway-head {
  border-bottom: 1px solid var(--line-soft);
  color: var(--muted);
}

.cutaway-foot {
  border-top: 1px solid var(--line-soft);
  color: var(--rust-bright);
}

.cutaway-frame svg {
  display: block;
  width: 100%;
  height: auto;
}

.cutaway-frame svg .contour {
  fill: none;
  stroke: var(--moss-bright);
  stroke-width: 1.6;
  stroke-dasharray: 1200;
  stroke-dashoffset: 1200;
  animation: contour-draw 2s cubic-bezier(0.22, 0.61, 0.2, 1) forwards;
}

.cutaway-frame svg .contour.thin {
  stroke-width: 1;
  opacity: 0.55;
  animation-delay: 0.25s;
}

@keyframes contour-draw {
  to { stroke-dashoffset: 0; }
}

.cutaway-frame svg .ground {
  fill: rgba(243, 234, 216, 0.05);
  stroke: rgba(243, 234, 216, 0.35);
  stroke-width: 1.6;
}

.cutaway-frame svg .soil-hatch line {
  stroke: var(--paper);
  stroke-width: 1.2;
  opacity: 0.14;
}

.cutaway-frame svg .house {
  fill: rgba(14, 12, 9, 0.6);
  stroke: var(--paper);
  stroke-width: 2;
}

.cutaway-frame svg .door {
  fill: rgba(243, 234, 216, 0.12);
  stroke: var(--paper);
  stroke-width: 1.5;
}

.cutaway-frame svg .pipe {
  fill: none;
  stroke: var(--rust-bright);
  stroke-width: 3.5;
}

.cutaway-frame svg .tank {
  fill: rgba(74, 93, 58, 0.22);
  stroke: var(--moss-bright);
  stroke-width: 2;
}

.cutaway-frame svg .riser {
  stroke: var(--rust-bright);
  stroke-width: 2.5;
}

.cutaway-frame svg .field-lines {
  fill: none;
  stroke: var(--moss-bright);
  stroke-width: 2.5;
  stroke-linecap: round;
}

.cutaway-frame svg .callout-line {
  stroke: var(--muted);
  stroke-width: 1.2;
  stroke-dasharray: 4 4;
}

.cutaway-frame svg .callouts text {
  fill: var(--paper);
  font-family: var(--utility);
  font-size: 14px;
}

.cutaway-caption {
  margin: 0.8rem 0 0;
  color: var(--muted);
  font-family: var(--utility);
  font-size: 0.68rem;
}

/* ---------- symptoms ledger ---------- */

.symptoms {
  padding-block: clamp(3.5rem, 8vh, 6rem);
  border-top: 1px solid var(--line-soft);
}

.section-title {
  max-width: 640px;
  margin-bottom: 2.6rem;
}

.symptom-ledger {
  display: flex;
  flex-direction: column;
}

.symptom-ledger a {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr) auto;
  gap: 1.3rem;
  align-items: center;
  padding: 1.3rem 0.6rem;
  border-top: 1px solid var(--line-soft);
  text-decoration: none;
  border-left: 3px solid transparent;
  border-radius: 0 12px 12px 0;
  background: transparent;
  transition: border-left-color 0.15s ease, background 0.15s ease, padding-left 0.15s ease;
}

.symptom-ledger a:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.symptom-ledger a:hover,
.symptom-ledger a:focus-visible {
  border-left-color: var(--rust-bright);
  background: var(--surface);
  padding-left: 1.1rem;
}

.ledger-no {
  color: var(--moss-bright);
  font-family: var(--utility);
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.symptom-ledger a:hover .ledger-no {
  color: var(--rust-bright);
}

.ledger-body b {
  display: block;
  font-size: 1.12rem;
  font-weight: 700;
}

.ledger-body span {
  color: var(--muted);
  font-size: 0.88rem;
}

.ledger-add {
  padding: 0.32rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-family: var(--utility);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
}

.symptom-ledger a:hover .ledger-add {
  border-color: var(--rust-bright);
  color: var(--rust-bright);
}

.safety {
  margin-top: 2.4rem;
  padding: 1.2rem 1.4rem;
  border-left: 3px solid var(--rust-bright);
  border-radius: 0 14px 14px 0;
  background: var(--surface);
  box-shadow: var(--lift);
}

.safety strong {
  display: block;
  margin-bottom: 0.3rem;
  font-family: var(--utility);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--rust-bright);
}

.safety p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* ---------- prepare ---------- */

.prepare {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(2.5rem, 5vw, 5rem);
  padding-block: clamp(3.5rem, 8vh, 6rem);
  border-top: 1px solid var(--line-soft);
}

.prepare-copy h2 {
  margin-bottom: 1.2rem;
}

.prepare-copy > p:not(.field-label) {
  color: var(--muted);
}

.prepare-list {
  margin: 0;
}

.prepare-list > div {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 1.4rem;
  padding: 1.15rem 0;
  border-top: 1px solid var(--line-soft);
}

.prepare-list > div:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.prepare-list dt {
  color: var(--moss-bright);
  font-family: var(--utility);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.prepare-list dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.96rem;
}

/* ---------- scope (glass panel) ---------- */

.scope {
  padding-block: clamp(3.5rem, 8vh, 6rem);
  margin-block: clamp(3rem, 6vh, 5rem);
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: 20px;
  box-shadow: var(--lift);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  width: min(1180px, calc(100% - 3rem));
}

.scope-heading {
  max-width: 640px;
  margin-bottom: 2.6rem;
  padding-inline: clamp(1.4rem, 4vw, 3.2rem);
}

.scope-heading .field-label {
  color: var(--rust-bright);
}

.scope-heading .field-label::before {
  color: var(--line);
}

.scope-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  padding: 0 clamp(1.4rem, 4vw, 3.2rem) clamp(1.4rem, 4vw, 2.8rem);
}

.scope-list article {
  padding: 1.6rem 1.6rem 0 0;
  border-top: 2px solid var(--moss-bright);
}

.scope-no {
  display: block;
  margin-bottom: 0.9rem;
  color: var(--rust-bright);
  font-family: var(--utility);
  font-size: 0.8rem;
  font-weight: 600;
}

.scope-list h3 {
  margin-bottom: 0.55rem;
  color: var(--text);
}

.scope-list p {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

/* ---------- quote worksheet ---------- */

.quote {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(2.5rem, 5vw, 5rem);
  padding-block: clamp(3.5rem, 8vh, 6rem);
  border-top: 1px solid var(--line-soft);
}

.quote-intro h2 {
  margin-bottom: 1.2rem;
}

.quote-intro > p:not(.field-label) {
  color: var(--muted);
}

.quote-staging {
  margin-top: 1.8rem;
  padding: 1rem 1.2rem;
  border-left: 3px solid var(--moss-bright);
  border-radius: 0 12px 12px 0;
  background: var(--surface);
  font-size: 0.85rem;
}

.quote-staging p {
  margin: 0;
  color: var(--muted);
}

form {
  padding: clamp(1.4rem, 3vw, 2.2rem);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--lift);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.field {
  margin-bottom: 1.2rem;
}

label {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--utility);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

input,
select,
textarea {
  width: 100%;
  min-height: 50px;
  padding: 0.65rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(14, 12, 9, 0.65);
  color: var(--text);
  font: inherit;
}

input::placeholder,
textarea::placeholder {
  color: rgba(168, 155, 133, 0.55);
}

input:hover,
select:hover,
textarea:hover {
  border-color: rgba(243, 234, 216, 0.4);
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  border-color: var(--rust-bright);
  outline: none;
  box-shadow: 0 0 0 3px rgba(224, 129, 79, 0.22);
}

textarea {
  resize: vertical;
}

.field-error {
  display: block;
  min-height: 1.3em;
  color: var(--rust-bright);
  font-size: 0.74rem;
}

form button {
  display: inline-flex;
  align-items: center;
  min-height: 54px;
  padding: 0.8rem 1.6rem;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--rust-bright);
  color: var(--ink);
  font-family: var(--body);
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: 0 0 28px var(--rust-glow);
  transition: background 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

form button:hover {
  background: var(--paper);
  color: var(--ink);
  transform: translateY(-2px);
  box-shadow: 0 0 36px rgba(243, 234, 216, 0.4);
}

.form-status {
  min-height: 1.6em;
  margin: 1rem 0 0;
  color: var(--moss-bright);
  font-weight: 700;
}

/* ---------- footer ---------- */

footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.6rem 0 2.2rem;
  border-top: 1px solid var(--line-soft);
  font-size: 0.76rem;
  color: var(--muted);
}

footer p {
  margin: 0;
}

footer a {
  font-family: var(--utility);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

footer a:hover {
  color: var(--rust-bright);
}

/* ---------- reveals ---------- */

.js [data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 0.61, 0.2, 1);
}

.js [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

.d1 { transition-delay: 0.08s; }
.d2 { transition-delay: 0.16s; }
.d3 { transition-delay: 0.24s; }
.d4 { transition-delay: 0.32s; }

/* ---------- responsive ---------- */

@media (max-width: 900px) {
  .hero-copy {
    grid-template-columns: 1fr;
    min-height: 0;
    gap: 2.6rem;
  }

  .ground-cutaway {
    max-width: 520px;
  }

  .scope-list {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .site-header {
    align-items: flex-start;
    padding-block: 1.1rem;
  }

  nav {
    flex-wrap: wrap;
    justify-content: flex-end;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .site-header,
  main > section,
  .scope,
  footer {
    width: min(100% - 1.5rem, 1180px);
  }

  .hero-copy {
    width: min(100% - 1.5rem, 1180px);
  }

  nav {
    width: 100%;
    gap: 0.7rem;
  }

  nav a:not(.quote-link) {
    display: none;
  }

  .symptom-ledger a {
    grid-template-columns: 56px 1fr;
    gap: 0.9rem;
  }

  .ledger-add {
    display: none;
  }

  .prepare-list > div {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }

  .pair {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .solid-action,
  form button {
    width: 100%;
  }
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .cutaway-frame svg .contour {
    stroke-dashoffset: 0;
    animation: none;
  }
}