/* 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; } }

/* ==========================================================================
   Collins Building HVAC Renewal — collinshvac.xyz
   THE DEVICE: the punch list. Content is carried by numbered items with a
   status mark in a left column — OPEN, WATCH, CLOSED — the way a snagging
   list on a building renewal actually looks.
   01 Tokens · 02 Base · 03 Header · 04 Status row · 05 Buttons
   06 Hero · 07 Page heads · 08 The punch list · 09 Decision tree (signature)
   10 FAQ · 11 Form & contact · 12 Footer · 13 Images
   ========================================================================== */

/* 01 Tokens */
:root {
  --navy: #1e2733; --navy-2: #2f3c4d; --navy-soft: #dde1e6; --cool: #eef0f2; --cool-2: #e2e6ea; --white: #ffffff;
  --amber: #d98324; --amber-dark: #9a5a0c; --amber-soft: #fbeedd;
  --ink: #12181f; --text: #46505c; --muted: #68727e; --line: #d2d7dd;
  --focus: #9a5a0c; --err: #a02820; --ok: #1f6b4a;
  --disp: "Onest", "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: 0.76rem; --f0: clamp(1rem, 0.97rem + 0.16vw, 1.06rem);
  --f1: clamp(1.14rem, 1.03rem + 0.5vw, 1.38rem);
  --f2: clamp(1.62rem, 1.3rem + 1.5vw, 2.3rem); --f3: clamp(1.95rem, 1.45rem + 2.5vw, 3.2rem);
  --r: 2px; --wrap: 1180px; --pad-y: clamp(2.8rem, 2.2rem + 3.2vw, 4.8rem);
}

/* 02 Base */
body { background: var(--cool); color: var(--text); font-family: var(--sans); font-size: var(--f0); line-height: 1.68; }
h1, h2, h3 { margin: 0 0 0.48em; font-family: var(--disp); color: var(--ink); font-weight: 700; line-height: 1.16; letter-spacing: -0.026em; text-wrap: balance; }
h1 { font-size: var(--f3); }
h2 { font-size: var(--f2); }
h3 { font-size: var(--f1); }
p { margin: 0 0 1em; max-width: 64ch; }
p:last-child { margin-bottom: 0; }
a { color: var(--amber-dark); 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; }
.wrap { width: min(100% - 2rem, var(--wrap)); margin-inline: auto; }
.ref { display: block; margin-bottom: 0.55rem; font-family: var(--disp); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.22em; text-transform: uppercase; color: var(--amber-dark); }
.sec--navy .ref, .phead .ref { color: #f0bd7c; }
.mt { margin-top: 2rem; }

/* 03 Header — navy, with a status line beneath it on phones */
.hd { position: sticky; top: 0; z-index: 30; background: var(--navy); }
.hd__top .wrap { display: flex; align-items: center; gap: 0.7rem; min-height: 60px; }
.cl-logo { display: inline-flex; align-items: center; gap: 0.55rem; margin-right: auto; color: #fff; text-decoration: none; }
.cl-logo svg { width: 27px; height: 27px; flex: none; }
.cl-logo b { font-family: var(--disp); font-size: 1.12rem; font-weight: 700; letter-spacing: -0.032em; color: #fff; }
.cl-logo small { display: block; font-size: 0.55rem; font-weight: 700; letter-spacing: 0.15em; text-transform: uppercase; color: #f0bd7c; }
.hd__tel { display: none; align-items: center; gap: 0.4rem; color: #fff; font-weight: 700; text-decoration: none; white-space: nowrap; }
.hd__tel svg { width: 16px; height: 16px; color: #f0bd7c; flex: none; }
.hd__tel:hover { color: #f0bd7c; }
.nav-toggle { display: inline-flex; align-items: center; justify-content: center; flex: none; width: 42px; height: 40px; padding: 0; border: 1px solid rgba(255,255,255,0.32); border-radius: var(--r); background: transparent; color: #fff; cursor: pointer; }
.nav-toggle svg { width: 19px; height: 19px; }
.clnav { display: none; }
@media (max-width: 1039px) {
  .hd__top .btn { display: none; }
  .clnav { position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; padding: 0.3rem 1rem 1.2rem; background: var(--navy); }
  .clnav.is-open { display: flex; }
  .clnav a { padding: 0.85rem 0.2rem; border-bottom: 1px solid rgba(255,255,255,0.18); color: #fff; font-family: var(--disp); font-size: 1.08rem; font-weight: 700; text-decoration: none; }
  .clnav a[aria-current="page"] { color: #f0bd7c; }
  .clnav :focus-visible { outline-color: #f0bd7c; }
}
@media (max-width: 420px) { .cl-logo small { display: none; } }
@media (min-width: 1040px) {
  .hd__top .wrap { min-height: 74px; gap: 1.4rem; }
  .nav-toggle { display: none; }
  .hd__tel { display: inline-flex; }
  .clnav { display: flex; gap: 1.4rem; }
  .clnav a { padding: 0.3rem 0; color: #a9b3bf; font-weight: 600; text-decoration: none; border-bottom: 2px solid transparent; white-space: nowrap; }
  .clnav a:hover { color: #fff; }
  .clnav a[aria-current="page"] { color: #fff; border-bottom-color: var(--amber); }
  .clnav :focus-visible { outline-color: #f0bd7c; }
}

/* 04 Status row — phones only, a punch-list line under the header */
.statusrow { display: flex; align-items: stretch; background: var(--amber-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.statusrow .mark { display: flex; align-items: center; flex: none; padding: 0 0.6rem; background: var(--amber); color: var(--ink); font-family: var(--disp); font-size: 0.64rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; }
.statusrow a { display: flex; align-items: center; padding: 0.62rem 0.8rem; color: var(--ink); font-weight: 700; text-decoration: none; white-space: nowrap; }
.statusrow__tel { flex: 1 1 auto; }
.statusrow__cta { flex: none; border-left: 1px solid var(--line); color: var(--amber-dark); }
.statusrow a:hover { background: #fff; }
@media (max-width: 359px) { .statusrow a { padding-inline: 0.55rem; font-size: 0.92rem; } }
@media (min-width: 1040px) { .statusrow { display: none; } }

/* 05 Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; padding: 0.72rem 1.35rem; border: 0; border-radius: var(--r); background: var(--amber); color: var(--ink); font: inherit; font-weight: 700; line-height: 1.3; text-decoration: none; white-space: nowrap; cursor: pointer; transition: background-color 0.18s, color 0.18s; }
.btn:hover { background: var(--amber-dark); color: #fff; }
.btn svg { width: 1.05em; height: 1.05em; flex: none; }
.btn--navy { background: var(--navy); color: #fff; }
.btn--navy:hover { background: var(--ink); color: #fff; }
.btn--line { background: transparent; color: var(--navy); box-shadow: inset 0 0 0 2px var(--navy); }
.btn--line:hover { background: var(--navy); color: #fff; }
.btn--cool, .phead a.btn--cool, .sec--navy a.btn--cool, .tree__note a.btn--cool { background: var(--cool); color: var(--ink); }
.btn--cool:hover, .phead a.btn--cool:hover, .sec--navy a.btn--cool:hover, .tree__note a.btn--cool:hover { background: #fff; color: var(--ink); }
@media (max-width: 460px) { .btn { white-space: normal; text-align: center; } } /* long labels wrap rather than overflow */
.btns { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1.4rem; }

/* 06 Hero */
.hero { padding-block: clamp(2.6rem, 2rem + 3vw, 4.4rem); background: var(--navy); color: #a9b3bf; }
.hero h1 { color: #fff; max-width: 17ch; }
.hero p.lede { font-size: var(--f1); line-height: 1.5; color: #dce1e6; max-width: 48ch; }
.hero :focus-visible { outline-color: #f0bd7c; }

/* 07 Page heads */
.phead { padding-block: clamp(2.2rem, 1.8rem + 2.4vw, 3.4rem); background: var(--navy); color: #a9b3bf; }
.phead h1 { color: #fff; max-width: 20ch; }
.phead p { font-size: 1.04rem; max-width: 58ch; }
.phead a:not(.btn) { color: #fff; }
.phead :focus-visible { outline-color: #f0bd7c; }
.crumbs { display: flex; flex-wrap: wrap; gap: 0.45rem; margin: 0 0 0.9rem; padding: 0; list-style: none; font-size: 0.83rem; }
.crumbs li + li::before { content: "/"; margin-right: 0.45rem; color: #f0bd7c; }

/* 08 The punch list */
.sec { padding-block: var(--pad-y); }
.sec--white { background: var(--white); }
.sec--cool { background: var(--cool-2); }
.sec--navy { background: var(--navy); color: #a9b3bf; }
.sec--navy h2, .sec--navy h3, .sec--navy b { color: #fff; }
.sec--navy a:not(.btn) { color: #fff; }
.sec--navy :focus-visible { outline-color: #f0bd7c; }
.head { max-width: 640px; margin-bottom: 2rem; }

.punch { margin: 0; padding: 0; list-style: none; counter-reset: p; border-top: 2px solid var(--navy); }
.sec--navy .punch { border-top-color: var(--amber); }
.punch > li { display: grid; gap: 0.3rem 1rem; padding: 1.1rem 0; border-bottom: 1px solid var(--line); }
@media (min-width: 720px) { .punch > li { grid-template-columns: 3rem 6.5rem 1fr; align-items: baseline; } }
.sec--navy .punch > li { border-bottom-color: rgba(255,255,255,0.22); }
.punch > li::before { counter-increment: p; content: counter(p, decimal-leading-zero); font-family: var(--disp); font-size: 0.82rem; font-weight: 700; letter-spacing: 0.1em; color: var(--muted); }
.sec--navy .punch > li::before { color: #8e99a6; }
.punch .st { display: inline-block; align-self: start; justify-self: start; padding: 0.1rem 0.5rem; border-radius: var(--r); font-family: var(--disp); font-size: 0.66rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; }
.punch .st--open { background: var(--amber); color: var(--ink); }
.punch .st--watch { background: var(--amber-soft); color: var(--amber-dark); }
.punch .st--closed { background: var(--navy-soft); color: var(--navy); }
.sec--navy .punch .st--watch { background: rgba(240,189,124,0.2); color: #f0bd7c; }
.sec--navy .punch .st--closed { background: rgba(255,255,255,0.14); color: #dce1e6; }
.punch b { display: block; margin-bottom: 0.12rem; font-family: var(--disp); font-size: 1.1rem; color: var(--ink); }
.sec--navy .punch b { color: #fff; }
.punch p { margin: 0; font-size: var(--f-sm); }
.pairs { display: grid; gap: 1.3rem; }
@media (min-width: 820px) { .pairs { grid-template-columns: repeat(2, 1fr); gap: 1.8rem; } }
.pairs article { padding: 1.3rem 1.4rem; background: var(--white); border-top: 3px solid var(--amber); }
.pairs h3 { font-size: 1.2rem; }
.pairs ul { margin: 0.7rem 0 0; padding-left: 1.05em; font-size: var(--f-sm); }
.pairs li { margin-bottom: 0.28rem; }
.split { display: grid; gap: 2rem; align-items: center; }
@media (min-width: 900px) { .split { grid-template-columns: 1fr 1fr; gap: 3rem; } .split--flip > :first-child { order: 2; } }
.split > * { min-width: 0; }
.split img, .split .img-placeholder { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.plainlist { margin: 0; padding: 0; list-style: none; }
.plainlist li { display: grid; gap: 0.15rem; padding: 0.9rem 0; border-bottom: 1px solid var(--line); }
.sec--navy .plainlist li { border-bottom-color: rgba(255,255,255,0.22); }
.plainlist b { font-family: var(--disp); font-size: 1.06rem; }
.plainlist span { font-size: var(--f-sm); }
.map { display: block; width: 100%; height: clamp(300px, 34vw, 380px); background: var(--navy-soft); }
.where { display: grid; gap: 2rem; align-items: center; }
@media (min-width: 880px) { .where { grid-template-columns: 0.9fr 1.1fr; gap: 3rem; } }

/* 09 Decision tree (signature) */
.tree { display: grid; gap: 1.8rem; }
@media (min-width: 1000px) {
  .tree { grid-template-columns: 0.92fr 1.08fr; gap: 2.6rem; align-items: start; }
  .tree__ask { grid-column: 1; grid-row: 1; }
  .tree__note { grid-column: 1; grid-row: 2; }
  .tree__fig { grid-column: 2; grid-row: 1 / span 2; position: sticky; top: 6.4rem; }
}
.tree__ask { padding: clamp(1.3rem, 1.1rem + 1.4vw, 1.9rem); background: var(--white); border-top: 4px solid var(--amber); }
.tree__ask fieldset { margin: 0 0 1.3rem; padding: 0; border: 0; }
.tree__ask fieldset:last-child { margin-bottom: 0; }
.tree__ask legend { display: block; margin-bottom: 0.5rem; padding: 0; font-family: var(--disp); font-weight: 700; font-size: 1rem; color: var(--ink); }
.yn { display: flex; gap: 0.4rem; }
.yn label { position: relative; flex: 1 1 0; }
.yn input { position: absolute; opacity: 0; }
.yn span { display: block; padding: 0.55rem 0.5rem; border: 1px solid var(--line); border-radius: var(--r); background: var(--cool); font-size: var(--f-sm); font-weight: 700; text-align: center; cursor: pointer; }
.yn input:checked + span { background: var(--navy); border-color: var(--navy); color: #fff; }
.yn input:focus-visible + span { outline: 3px solid var(--focus); outline-offset: 2px; }
.tree__fig { margin: 0; }
.tree__svg { display: block; width: 100%; height: auto; background: var(--white); }
.tree__svg .node { fill: #ffffff; stroke: #9aa4b0; stroke-width: 2; transition: fill 0.25s, stroke 0.25s; }
.tree__svg .spine { fill: none; stroke: #c7cdd4; stroke-width: 3; transition: stroke 0.25s; }
.tree__svg .exit { fill: none; stroke: #c7cdd4; stroke-width: 3; transition: stroke 0.25s; }
.tree__svg .leaf { fill: #eef0f2; stroke: #9aa4b0; stroke-width: 2; transition: fill 0.25s, stroke 0.25s; }
.tree__svg .lbl { font-family: system-ui, sans-serif; font-size: 12px; fill: #46505c; }
.tree__svg .lbl--n { font-weight: 700; fill: #12181f; }
[data-path~="n1"] #t-n1, [data-path~="n2"] #t-n2, [data-path~="n3"] #t-n3, [data-path~="n4"] #t-n4 { fill: #1e2733; stroke: #1e2733; }
[data-path~="n1"] #t-l1, [data-path~="n2"] #t-l2, [data-path~="n3"] #t-l3, [data-path~="n4"] #t-l4 { fill: #ffffff; }
[data-path~="s1"] #t-s1, [data-path~="s2"] #t-s2, [data-path~="s3"] #t-s3, [data-path~="s4"] #t-s4 { stroke: #d98324; }
[data-path~="eA"] #t-eA, [data-path~="eB"] #t-eB, [data-path~="eC"] #t-eC, [data-path~="eD"] #t-eD, [data-path~="eE"] #t-eE { stroke: #d98324; }
[data-path~="xA"] #t-xA, [data-path~="xB"] #t-xB, [data-path~="xC"] #t-xC, [data-path~="xD"] #t-xD, [data-path~="xE"] #t-xE { fill: #d98324; stroke: #9a5a0c; }
.tree__note { padding: clamp(1.3rem, 1.1rem + 1.4vw, 1.9rem); background: var(--navy); color: #a9b3bf; }
.tree__note h2 { color: #fff; font-size: 1.04rem; }
.tree__note b { color: #fff; }
.tree__note .title { display: block; margin: 0.2rem 0 0.85rem; font-family: var(--disp); font-size: clamp(1.3rem, 1.1rem + 1.2vw, 1.85rem); font-weight: 700; color: #f0bd7c; line-height: 1.2; }
.tree__note ul { margin: 0.9rem 0 0; padding-left: 1.15em; font-size: var(--f-sm); }
.tree__note li { margin-bottom: 0.45rem; }
.tree__note .caveat { margin-top: 1.2rem; padding-top: 0.9rem; border-top: 1px solid rgba(255,255,255,0.22); font-size: 0.85rem; color: #8e99a6; }
.tree__note :focus-visible { outline-color: #f0bd7c; }

/* 10 FAQ */
.faq { display: grid; gap: 0; max-width: 880px; border-top: 2px solid var(--navy); }
.clq { border-bottom: 1px solid var(--line); }
.clq summary { display: flex; justify-content: space-between; gap: 1rem; padding: 1rem 0; font-family: var(--disp); font-weight: 700; font-size: 1.04rem; color: var(--ink); list-style: none; cursor: pointer; }
.clq summary::after { content: "+"; flex: none; color: var(--amber-dark); }
.clq[open] summary::after { content: "\2013"; }
.clq > div { padding: 0 0 1.1rem; }

/* 11 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: 0.72rem 0.9rem; font: inherit; color: var(--ink); background: var(--white); border: 1px solid #bfc6ce; 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='%231e2733' 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(--navy); }
.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: 0.44rem 0.9rem; border: 1px solid #bfc6ce; border-radius: var(--r); background: var(--white); font-size: var(--f-sm); cursor: pointer; }
.pick input:checked + span { background: var(--navy); border-color: var(--navy); 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: 2.2rem; align-items: start; }
@media (min-width: 920px) { .contact { grid-template-columns: 1.1fr 0.9fr; gap: 3rem; } }
.contact > * { min-width: 0; }
.side { display: grid; gap: 1rem; }
.side__card { padding: 1.3rem 1.4rem; background: var(--white); border-top: 3px solid var(--amber); }
.side__card h2 { font-size: 1.04rem; }
.side__card .big { display: block; margin: 0.15rem 0 0.3rem; font-family: var(--disp); font-size: 1.5rem; font-weight: 700; color: var(--ink); text-decoration: none; }

/* 12 Footer */
.ft { background: var(--ink); color: #949ea9; font-size: var(--f-sm); }
.ft a { color: #fff; }
.ft :focus-visible { outline-color: #f0bd7c; }
.ft__row { display: grid; gap: 1.5rem; padding-block: 2.8rem 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: 1.18rem; font-weight: 700; color: #fff; }
.ft h2 { margin: 0 0 0.55rem; font-family: var(--sans); font-size: 0.73rem; letter-spacing: 0.16em; text-transform: uppercase; color: #f0bd7c; }
.ft ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 0.32rem; }
.ft__base { padding-block: 0.9rem; border-top: 1px solid rgba(255,255,255,0.15); font-size: 0.8rem; }

/* 13 Images */
.figwide img, .figwide .img-placeholder { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.img-placeholder { background: var(--navy-soft); border: 1px dashed #b2bac3; color: var(--muted); }
.img-placeholder b { color: var(--ink); overflow-wrap: anywhere; }