/* 00  Core — resets and behaviour hooks only. Every visual decision for this
       site lives in the sections below, starting with the design tokens.    */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; }
img, svg, iframe, video { display: block; max-width: 100%; }
img { height: auto; }
iframe { border: 0; }
figure { margin: 0; }
[hidden] { display: none !important; }
:where(a, button, input, select, textarea, summary, [tabindex]):focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
.skip-link { position: absolute; left: 0.5rem; top: 0.5rem; z-index: 999; transform: translateY(-160%); padding: 0.8rem 1.2rem; background: #000; color: #fff; font-weight: 700; text-decoration: none; }
.skip-link:focus { transform: none; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.nav-toggle .icon-close, .nav-toggle[aria-expanded="true"] .icon-open { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }
summary { cursor: pointer; }
summary::-webkit-details-marker { display: none; }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.field { display: flex; flex-direction: column; gap: 0.3rem; min-width: 0; }
.field__error { margin: 0; min-height: 1rem; font-size: 0.82rem; font-weight: 700; color: var(--err); }
.field.is-invalid :where(input, select, textarea) { border-color: var(--err); }
.form-status { min-height: 1.2rem; font-weight: 700; }
.form-status.is-error { color: var(--err); }
.form-status.is-ok { color: var(--ok); }
.img-placeholder { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0.25rem; width: 100%; padding: 1rem; text-align: center; font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; line-height: 1.5; }
.img-placeholder b { display: block; font-size: 0.92rem; letter-spacing: 0; text-transform: none; word-break: break-all; }
:target { scroll-margin-top: 120px; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; } }

/* ==========================================================================
   Silvergate HVAC Facility Works — hvacsilvergate.xyz
   THE DEVICE: stacking section bars. Each major part of a page is introduced by
   a slim pewter bar carrying a number and a title; on wide screens the bars are
   sticky and stack beneath one another as you scroll, so you can always see
   which part of the page you are in and what came before it.
   01 Tokens · 02 Base · 03 Header · 04 Contact strip · 05 Buttons
   06 Hero · 07 Page heads · 08 Bars & parts · 09 Blocks
   10 Roof walk (signature) · 11 FAQ · 12 Form & contact · 13 Footer · 14 Images
   ========================================================================== */

/* 01 Tokens */
:root {
  --paper: #f4f4f2; --band: #e6e7e4; --white: #ffffff;
  --ink: #1c1f21; --pewter: #5a6267; --pewter-d: #444b4f; --pewter-l: #cfd3d4;
  --red: #b3392b; --red-d: #93281c; --red-l: #f6e2de;
  --text: #4b5154; --muted: #737a7d; --line: #d6d8d6;
  --focus: #93281c; --err: #93281c;
  --disp: "Mada", "Segoe UI", system-ui, sans-serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --f-sm: 0.91rem; --f-xs: 0.78rem; --f0: clamp(1rem, 0.97rem + 0.16vw, 1.07rem);
  --f1: clamp(1.1rem, 1.02rem + 0.4vw, 1.25rem);
  --f2: clamp(1.35rem, 1.16rem + 0.98vw, 1.8rem); --f3: clamp(1.75rem, 1.35rem + 2vw, 2.7rem);
  --r: 3px; --wrap: 1140px; --hd: 56px; --bar: 2.3rem;
  --pad-y: clamp(2.4rem, 2rem + 2.6vw, 3.8rem);
}
@media (min-width: 900px) { :root { --hd: 66px; } }

/* 02 Base */
body { background: var(--paper); color: var(--text); font-family: var(--sans); font-size: var(--f0); line-height: 1.7; }
h1, h2, h3 { margin: 0 0 0.5em; font-family: var(--disp); color: var(--ink); font-weight: 700; line-height: 1.24; letter-spacing: -0.015em; text-wrap: balance; }
h1 { font-size: var(--f3); }
h2 { font-size: var(--f2); }
h3 { font-size: var(--f1); }
p { margin: 0 0 0.95em; max-width: 66ch; }
p:last-child { margin-bottom: 0; }
a { color: var(--red-d); text-underline-offset: 3px; }
a:hover { color: var(--ink); }
strong, b { color: var(--ink); font-weight: 700; }
ul, ol { margin: 0 0 1em; padding-left: 1.2em; }
li { margin-bottom: 0.35rem; }
.wrap { width: min(100% - 2rem, var(--wrap)); margin-inline: auto; }
.kick { display: block; margin-bottom: 0.45rem; font-family: var(--disp); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.15em; text-transform: uppercase; color: var(--red-d); }
.mt { margin-top: 1.6rem; }

/* 03 Header */
.hd { position: sticky; top: 0; z-index: 40; background: var(--white); border-bottom: 3px solid var(--ink); }
.hd__bar .wrap { display: flex; align-items: center; gap: 0.6rem; min-height: var(--hd); }
.sg-logo { display: inline-flex; align-items: center; gap: 0.55rem; margin-right: auto; color: var(--ink); text-decoration: none; }
.sg-logo svg { width: 26px; height: 26px; flex: none; }
.sg-logo b { display: block; font-family: var(--disp); font-size: 1rem; font-weight: 700; letter-spacing: -0.02em; }
.sg-logo small { display: block; margin-top: -0.12em; font-size: 0.5rem; font-weight: 700; letter-spacing: 0.15em; text-transform: uppercase; color: var(--pewter); }
.nav-toggle { display: inline-flex; align-items: center; justify-content: center; flex: none; width: 38px; height: 38px; padding: 0; border: 1px solid var(--pewter-l); border-radius: var(--r); background: var(--white); color: var(--ink); cursor: pointer; }
.nav-toggle svg { width: 18px; height: 18px; }
.sgnav { display: none; }
@media (max-width: 899px) {
  .hd__bar .btn { display: none; }
  .sgnav { position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; padding: 0.3rem 1rem 1.1rem; background: var(--white); border-bottom: 3px solid var(--ink); }
  .sgnav.is-open { display: flex; }
  .sgnav a { padding: 0.78rem 0.2rem; border-bottom: 1px solid var(--line); color: var(--ink); font-family: var(--disp); font-size: 1rem; font-weight: 700; text-decoration: none; }
  .sgnav a[aria-current="page"] { color: var(--red-d); }
}
@media (max-width: 400px) { .sg-logo small { display: none; } }
@media (min-width: 900px) {
  .nav-toggle { display: none; }
  .sgnav { display: flex; gap: 1.4rem; }
  .sgnav a { padding: 0.25rem 0; color: var(--pewter); font-family: var(--disp); font-size: 0.9rem; font-weight: 700; text-decoration: none; border-bottom: 2px solid transparent; white-space: nowrap; }
  .sgnav a:hover { color: var(--ink); }
  .sgnav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--red); }
}

/* 04 Contact strip — phones only */
.cstrip { display: flex; background: var(--ink); }
.cstrip a { flex: 1 1 0; min-width: 0; display: flex; align-items: baseline; gap: 0.4rem; padding: 0.4rem 0.75rem; color: #fff; font-family: var(--disp); font-size: 0.92rem; font-weight: 700; text-decoration: none; white-space: nowrap; }
.cstrip a + a { border-left: 1px solid rgba(255,255,255,0.28); background: var(--red); }
.cstrip .k { font-size: 0.6rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: #b9c0c3; }
.cstrip a + a .k { color: #f6e2de; }
.cstrip :focus-visible { outline-color: #fff; }
@media (min-width: 900px) { .cstrip { display: none; } }

/* 05 Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; padding: 0.6rem 1.15rem; border: 0; border-radius: var(--r); background: var(--red); color: #fff; font-family: var(--disp); font-size: 0.92rem; font-weight: 700; line-height: 1.45; text-decoration: none; white-space: nowrap; cursor: pointer; transition: background-color 0.18s, color 0.18s; }
.btn:hover { background: var(--red-d); color: #fff; }
.btn svg { width: 1.1em; height: 1.1em; flex: none; }
.btn--ink { background: var(--ink); color: #fff; }
.btn--ink:hover { background: #000; color: #fff; }
.btn--line { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 2px var(--ink); }
.btn--line:hover { background: var(--ink); color: #fff; }
.btn--paper, .sec--ink a.btn--paper, .rw__out a.btn--paper { background: var(--paper); color: var(--ink); }
.btn--paper:hover, .sec--ink a.btn--paper:hover, .rw__out a.btn--paper:hover { background: #fff; color: var(--ink); }
@media (max-width: 460px) { .btn { white-space: normal; text-align: center; } }
.btns { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1.2rem; }

/* 06 Hero — light, no colour field; the weight comes from a heavy rule */
.hero { padding-block: clamp(2.2rem, 1.8rem + 2.4vw, 3.6rem) clamp(1.8rem, 1.5rem + 2vw, 3rem); background: var(--white); border-bottom: 1px solid var(--line); }
.hero h1 { max-width: 20ch; }
.hero h1 em { font-style: normal; color: var(--red-d); }
.hero .rule { width: 100%; height: 6px; margin: 0 0 1.4rem; background: var(--ink); }
.hero .rule i { display: block; width: 28%; height: 100%; background: var(--red); }
.hero p.lede { font-size: var(--f1); line-height: 1.6; color: var(--text); max-width: 56ch; }

/* 07 Page heads */
.phead { padding-block: clamp(1.8rem, 1.5rem + 1.9vw, 2.8rem); background: var(--white); border-bottom: 1px solid var(--line); }
.phead h1 { max-width: 24ch; }
.phead p { font-size: 1.02rem; max-width: 60ch; }
.crumbs { display: flex; flex-wrap: wrap; gap: 0.45rem; margin: 0 0 0.85rem; padding: 0; list-style: none; font-family: var(--disp); font-size: 0.76rem; font-weight: 700; }
.crumbs li + li::before { content: "/"; margin-right: 0.45rem; color: var(--pewter-l); }

/* 08 Bars & parts — the device */
.part { padding-bottom: var(--pad-y); }
.bar { z-index: 20; display: flex; align-items: center; gap: 0.65rem; min-height: var(--bar); margin-bottom: 1.5rem; padding: 0.3rem 0; background: var(--pewter); color: #fff; }
.bar .wrap { display: flex; align-items: baseline; gap: 0.65rem; }
.bar b { flex: none; padding: 0.05rem 0.42rem; background: var(--ink); color: #fff; font-family: var(--disp); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.05em; }
.bar span { font-family: var(--disp); font-size: 0.86rem; font-weight: 700; letter-spacing: 0.02em; }
.bar--red { background: var(--red); }
@media (min-width: 720px) {
  .bar { position: sticky; top: calc(var(--hd) + var(--i, 0) * var(--bar)); }
}
.part__body { padding-top: 0.2rem; }

/* 09 Blocks */
.sec { padding-block: var(--pad-y); }
.sec--paper { background: var(--paper); }
.sec--white { background: var(--white); }
.sec--band { background: var(--band); }
.sec--ink { background: var(--ink); color: #b9c0c3; }
.sec--ink h2, .sec--ink h3, .sec--ink b { color: #fff; }
.sec--ink .kick { color: #e8a79c; }
.sec--ink a:not(.btn) { color: #fff; }
.sec--ink :focus-visible { outline-color: #fff; }
.head { max-width: 640px; margin-bottom: 1.5rem; }
.grid { display: grid; gap: 1.1rem; }
@media (min-width: 800px) { .grid--2 { grid-template-columns: repeat(2, 1fr); gap: 1.3rem; } }
@media (min-width: 900px) { .grid--3 { grid-template-columns: repeat(3, 1fr); } }
.grid > * { min-width: 0; }
.box { padding: 1.2rem 1.3rem; background: var(--white); border: 1px solid var(--line); border-left: 4px solid var(--pewter); border-radius: var(--r); }
.box--red { border-left-color: var(--red); }
.box--ink { border-left-color: var(--ink); }
.box h3 { margin-bottom: 0.35rem; font-size: 1.05rem; }
.sec--ink .box { background: #292d2f; border-color: #3c4144; }
.sec--band .box { background: var(--white); }
.tbl { width: 100%; border-collapse: collapse; margin-top: 1rem; font-size: var(--f-sm); }
.tbl th, .tbl td { padding: 0.62rem 0.7rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
.tbl th { font-family: var(--disp); font-size: 0.74rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--pewter); }
.tbl td:first-child { font-weight: 700; color: var(--ink); }
.scroll { overflow-x: auto; }
.figwide img, .figwide .img-placeholder { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-radius: var(--r); }
.figbox img, .figbox .img-placeholder { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: var(--r); }
.map { display: block; width: 100%; height: clamp(300px, 34vw, 380px); background: var(--band); border-radius: var(--r); }
.where { display: grid; gap: 2rem; align-items: center; }
@media (min-width: 880px) { .where { grid-template-columns: 1fr 1fr; gap: 3rem; } }

/* 10 Roof walk (signature) — a multi-select checklist */
.rw { display: grid; gap: 1.5rem; }
@media (min-width: 980px) { .rw { grid-template-columns: 1fr 1fr; gap: 2.2rem; align-items: start; } .rw__out { position: sticky; top: calc(var(--hd) + 1rem); } }
.rw__set { padding: 1.2rem 1.3rem 1.4rem; background: var(--white); border: 1px solid var(--line); border-radius: var(--r); }
.rw__set fieldset { margin: 0; padding: 0; border: 0; }
.rw__set legend { display: block; margin-bottom: 0.2rem; padding: 0; font-family: var(--disp); font-size: 1.05rem; font-weight: 700; color: var(--ink); }
.ticks { display: grid; gap: 0.25rem; margin-top: 0.9rem; }
.ticks label { position: relative; display: block; }
.ticks input { position: absolute; opacity: 0; }
.ticks span { display: block; padding: 0.5rem 0.7rem 0.5rem 2.1rem; border: 1px solid var(--line); border-radius: var(--r); background: var(--paper); font-size: var(--f-sm); cursor: pointer; }
.ticks span::before { content: ""; position: absolute; left: 0.62rem; top: 0.72rem; width: 15px; height: 15px; border: 2px solid var(--pewter); border-radius: 2px; background: #fff; }
.ticks input:checked + span { background: var(--red-l); border-color: var(--red); color: var(--ink); }
.ticks input:checked + span::before { border-color: var(--red); background: var(--red); box-shadow: inset 0 0 0 2px #fff; }
.ticks input:focus-visible + span { outline: 3px solid var(--focus); outline-offset: 2px; }
.rw__reset { margin-top: 1rem; }
.rw__out { padding: 1.3rem 1.35rem 1.5rem; background: var(--ink); color: #b9c0c3; border-radius: var(--r); }
.rw__out h2 { color: #fff; font-size: var(--f1); }
.rw__out b { color: #fff; }
.rw__count { display: block; margin-bottom: 0.9rem; font-family: var(--disp); font-size: 0.76rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: #e8a79c; }
.rw__item { padding: 0.9rem 0 0.95rem; border-top: 1px solid #3c4144; }
.rw__item:first-of-type { border-top: 0; padding-top: 0.2rem; }
.rw__item b { display: block; margin-bottom: 0.15rem; font-family: var(--disp); font-size: 1.02rem; }
.rw__item p { font-size: var(--f-sm); max-width: none; }
.rw__who { display: inline-block; margin-top: 0.45rem; padding: 0.15rem 0.5rem; border-radius: var(--r); background: #3c4144; font-family: var(--disp); font-size: 0.68rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: #cfd3d4; }
.rw__who--now { background: var(--red); color: #fff; }
.rw__none { padding: 0.2rem 0 0; font-size: var(--f-sm); }
.rw__out .caveat { margin-top: 1.1rem; padding-top: 0.85rem; border-top: 1px solid #3c4144; font-size: 0.85rem; color: #8b9295; }
.rw__out :focus-visible { outline-color: #fff; }

/* 11 FAQ */
.faq { display: grid; gap: 0.55rem; max-width: 880px; margin-top: 1.2rem; }
.sgq { background: var(--white); border: 1px solid var(--line); border-left: 4px solid var(--pewter); border-radius: var(--r); }
.sgq summary { display: flex; justify-content: space-between; gap: 1rem; padding: 0.85rem 1.05rem; font-family: var(--disp); font-weight: 700; font-size: 0.99rem; line-height: 1.5; color: var(--ink); list-style: none; cursor: pointer; }
.sgq summary::after { content: "+"; flex: none; color: var(--red-d); }
.sgq[open] { border-left-color: var(--red); }
.sgq[open] summary::after { content: "\2013"; }
.sgq > div { padding: 0 1.05rem 1.05rem; }

/* 12 Form & contact */
.form { display: grid; gap: 1rem 1.3rem; margin-top: 1.2rem; }
@media (min-width: 640px) { .form--2col { grid-template-columns: 1fr 1fr; } }
.field--full, .form__end { grid-column: 1 / -1; }
.field label, .picks legend { font-weight: 700; color: var(--ink); font-size: 0.94rem; }
.req { color: var(--err); }
.opt { font-weight: 400; color: var(--muted); }
input[type="text"], input[type="tel"], input[type="email"], input[type="number"], select, textarea { width: 100%; padding: 0.7rem 0.9rem; font: inherit; color: var(--ink); background: var(--white); border: 1px solid #b6bbbd; border-radius: var(--r); }
select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231c1f21' stroke-width='2.6'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.85rem center; background-size: 15px; padding-right: 2.3rem; }
textarea { min-height: 140px; resize: vertical; }
input:focus, select:focus, textarea:focus { border-color: var(--ink); }
.picks { margin: 0; padding: 0; border: 0; display: flex; flex-direction: row; flex-wrap: wrap; gap: 0.4rem; }
.picks legend { margin-bottom: 0.45rem; padding: 0; }
.pick { position: relative; }
.pick input { position: absolute; opacity: 0; }
.pick span { display: inline-block; padding: 0.42rem 0.9rem; border: 1px solid #b6bbbd; border-radius: var(--r); background: var(--white); font-size: var(--f-sm); cursor: pointer; }
.pick input:checked + span { background: var(--ink); border-color: var(--ink); color: #fff; }
.pick input:focus-visible + span { outline: 3px solid var(--focus); outline-offset: 2px; }
.form-note { margin: 0.5rem 0 0; font-size: 0.84rem; color: var(--muted); }
.contact { display: grid; gap: 1.4rem; align-items: start; }
@media (min-width: 920px) { .contact { grid-template-columns: 1.1fr 0.9fr; gap: 2.4rem; } }
.contact > * { min-width: 0; }
.side { display: grid; gap: 1rem; }
.side__card { padding: 1.05rem 1.15rem; background: var(--white); border: 1px solid var(--line); border-left: 4px solid var(--pewter); border-radius: var(--r); }
.side__card h2 { font-size: 0.95rem; margin-bottom: 0.2rem; }
.side__card .big { display: block; margin: 0.1rem 0 0.3rem; font-family: var(--disp); font-size: 1.2rem; font-weight: 700; color: var(--ink); text-decoration: none; }

/* 13 Footer */
.ft { background: var(--ink); color: #8b9295; font-size: var(--f-sm); }
.ft a { color: #fff; }
.ft :focus-visible { outline-color: #fff; }
.ft__row { display: grid; gap: 1.5rem; padding-block: 2.6rem 1.6rem; }
@media (min-width: 820px) { .ft__row { grid-template-columns: 1.5fr 1fr 1fr; } }
.ft__name { margin: 0 0 0.45rem; font-family: var(--disp); font-size: 1rem; font-weight: 700; color: #fff; }
.ft h2 { margin: 0 0 0.55rem; font-family: var(--sans); font-size: 0.72rem; letter-spacing: 0.15em; text-transform: uppercase; color: #e8a79c; }
.ft ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 0.32rem; }
.ft p { max-width: none; }
.ft__base { padding-block: 0.9rem; border-top: 1px solid rgba(255,255,255,0.15); font-size: 0.8rem; }

/* 14 Images */
.img-placeholder { background: var(--band); border: 1px dashed #b0b5b6; color: var(--muted); }
.img-placeholder b { color: var(--ink); overflow-wrap: anywhere; }