/* ══════════════════════════════════════════════════════════════════════
PIRAN ROOFING — concept/speculative trade site.
DELIBERATELY ISOLATED from both the main Fifty North Design site and
Carnstone. This file shares nothing with /css/styles.css or
/carnstone/css/carnstone.css: not a token, not a class name, not a font
file. Every custom property is --pr-* prefixed and every class is .pr-*.
Typefaces are Playfair Display (headings) + Inter (body/UI), as briefed.
The main site happens to use the same two families; that overlap is by
specification, not by sharing — Piran loads its own files from
/piran/fonts/ (Google Fonts latin subset, variable, 400–700 declared)
and never references /fonts/.
Palette: "modern British trades, premium, trustworthy, coastal".
Navy-charcoal ground, warm tan accent, off-white paper, muted sage as the
secondary neutral. Every text pairing measured with tools/contrast.py's
ratio(), not eyeballed; figures below. Anything over the placeholder
photography is pixel-sampled by tools/regress_piran.py instead.
══════════════════════════════════════════════════════════════════════ */
:root{
/* ── GROUNDS ── */
--pr-navy:#1C2630; /* dark bands, primary ink — 13.86:1 on paper */
--pr-navy-2:#27333F; /* navy hover / raised on dark */
--pr-paper:#F6F3EE; /* page ground, warm off-white */
--pr-paper-2:#ECE7DF; /* trust band, recessed blocks */
--pr-white:#FFFFFF; /* cards, form fields */
--pr-sage-lt:#DDE3DC; /* service-area band */
/* ── TEXT ON LIGHT ── measured against the worst light ground each sits on
--pr-body #48525B 7.20 paper / 6.48 paper-2 / 6.11 sage-lt
--pr-muted #5A636B 5.53 paper / 4.97 paper-2 / 4.69 sage-lt
--pr-tan-ink #7A5B2E 5.64 paper / 5.07 paper-2 / 4.79 sage-lt / 6.24 white */
--pr-body:#48525B;
--pr-muted:#5A636B;
--pr-tan-ink:#7A5B2E;
/* ── ACCENT ── fills, rules, decorative marks. Never small text on light
(2.13:1 on paper) — use --pr-tan-ink there. Navy text ON tan: 6.51:1. */
--pr-tan:#C8A36E;
--pr-tan-dk:#B58D55; /* tan button hover — navy on it 5.05:1 */
/* ── SECONDARY NEUTRAL ── sage. Decorative on light (2.26:1 on paper);
--pr-sage-dk is the version that carries icons/strokes (5.06:1). */
--pr-sage:#9BA79D;
--pr-sage-dk:#5E6B61;
/* ── ON NAVY ──
--pr-on-navy #CDD3D8 10.15:1 body copy on dark
--pr-on-navy-dim #A3AEB8 6.79:1 labels/meta on dark
--pr-tan on navy 6.51:1 may carry text on dark */
--pr-on-navy:#CDD3D8;
--pr-on-navy-dim:#A3AEB8;
--pr-line:#DAD3C8; /* hairlines on light — decorative */
--pr-line-navy:#3A4653; /* hairlines on dark — decorative */
--pr-serif:'Playfair Display',Georgia,'Times New Roman',serif;
--pr-sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
--pr-maxw:1240px;
--pr-gutter:clamp(20px,5vw,64px);
--pr-pad:max(var(--pr-gutter),calc((100vw - var(--pr-maxw)) / 2));
--pr-sect:clamp(72px,9vw,120px);
--pr-nav-h:72px;
}
/* Self-hosted, own files. Both are variable fonts, so each declared weight
maps to the same physical file. */
@font-face{font-family:'Playfair Display';font-style:normal;font-weight:400 700;font-display:swap;src:url('/piran/fonts/playfair-display.woff2') format('woff2');}
@font-face{font-family:'Inter';font-style:normal;font-weight:400 700;font-display:swap;src:url('/piran/fonts/inter.woff2') format('woff2');}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{background:var(--pr-paper);color:var(--pr-navy);font-family:var(--pr-sans);font-size:16px;
line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;}
a{color:inherit;}
ul{list-style:none;}
h1,h2,h3{font-family:var(--pr-serif);font-weight:500;line-height:1.1;letter-spacing:-.015em;}
button,input,textarea{font:inherit;color:inherit;}
/* .pr-form sets display:grid, which would otherwise beat the UA [hidden] rule. */
[hidden]{display:none!important;}
/* In-page anchors land below the fixed nav, not under it. */
section[id],#top{scroll-margin-top:var(--pr-nav-h);}
.pr-skip{position:absolute;left:-9999px;top:0;z-index:500;background:var(--pr-navy);color:var(--pr-white);
padding:12px 18px;font-size:14px;font-weight:600;}
.pr-skip:focus{left:0;}
:focus-visible{outline:2px solid var(--pr-navy);outline-offset:3px;}
.pr-nav :focus-visible,.pr-hero :focus-visible,.pr-gal :focus-visible,.pr-foot :focus-visible{outline-color:var(--pr-tan);}
.pr-wrap{padding-left:var(--pr-pad);padding-right:var(--pr-pad);}
.pr-sect{padding-top:var(--pr-sect);padding-bottom:var(--pr-sect);}
.pr-label{font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--pr-tan-ink);}
.pr-head{max-width:640px;margin-bottom:clamp(36px,5vw,60px);}
.pr-head h2,.pr-ct-info h2{font-size:clamp(32px,4.4vw,52px);margin-top:14px;}
.pr-lede{color:var(--pr-body);font-size:clamp(16px,1.6vw,18px);margin-top:16px;max-width:56ch;}
/* ── Buttons ── square corners; the only lift is 1px. */
.pr-btn{display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:0 28px;
font-size:15px;font-weight:600;letter-spacing:.01em;text-decoration:none;border:1px solid transparent;
cursor:pointer;transition:background-color .2s ease,border-color .2s ease,color .2s ease,transform .2s ease;}
.pr-btn:hover{transform:translateY(-1px);}
.pr-btn-tan{background:var(--pr-tan);color:var(--pr-navy);}
.pr-btn-tan:hover{background:var(--pr-tan-dk);}
.pr-btn-line{background:transparent;color:var(--pr-white);border-color:rgba(255,255,255,.75);}
.pr-btn-line:hover{border-color:var(--pr-white);background:rgba(255,255,255,.08);}
.pr-btn-navy{background:var(--pr-navy);color:var(--pr-white);}
.pr-btn-navy:hover{background:var(--pr-navy-2);}
/* ══ NAV ═══════════════════════════════════════════════════════════════ */
/* SOLID BY DEFAULT. JS adds .at-top to make the bar transparent over the
hero, so if JS never runs the nav stays readable over the light sections
instead of leaving white text on off-white. Going solid is instant (no
transition on the base rule): a fade would show white text over a light
section for its whole duration. Only the return to transparent, over
the dark hero, where both states are legible, is animated. */
.pr-nav{position:fixed;top:0;left:0;right:0;z-index:100;height:var(--pr-nav-h);color:var(--pr-white);
background:var(--pr-navy);box-shadow:0 1px 0 var(--pr-line-navy);}
.pr-nav.at-top:not(.open){background:transparent;box-shadow:none;
transition:background-color .3s ease,box-shadow .3s ease;}
.pr-nav-in{height:100%;display:flex;align-items:center;gap:clamp(20px,4vw,48px);
padding-left:var(--pr-pad);padding-right:var(--pr-pad);}
.pr-logo{display:inline-flex;flex-direction:column;align-items:center;gap:3px;text-decoration:none;color:inherit;}
.pr-logo-roof{display:block;width:44px;height:12px;}
.pr-logo-t{font-family:var(--pr-sans);font-size:15px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;
line-height:1;white-space:nowrap;margin-right:-.2em;}
.pr-links{margin-left:auto;}
.pr-links ul{display:flex;gap:clamp(20px,3vw,36px);}
.pr-links a{font-size:15px;font-weight:500;text-decoration:none;padding:8px 0;
border-bottom:1px solid transparent;transition:border-color .2s ease;}
.pr-links a:hover{border-bottom-color:var(--pr-tan);}
.pr-nav-tel{display:inline-flex;align-items:center;gap:9px;font-size:15px;font-weight:600;text-decoration:none;
white-space:nowrap;}
.pr-nav-tel svg{flex:none;}
.pr-nav-tel:hover .pr-nav-num{text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--pr-tan);}
.pr-burger{display:none;width:44px;height:44px;background:none;border:0;cursor:pointer;position:relative;margin-right:-10px;}
.pr-burger span{position:absolute;left:11px;right:11px;height:1.6px;background:currentColor;transition:transform .25s ease,top .25s ease;}
.pr-burger span:first-child{top:17px;}
.pr-burger span:last-child{top:26px;}
.pr-burger[aria-expanded="true"] span:first-child{top:21.5px;transform:rotate(45deg);}
.pr-burger[aria-expanded="true"] span:last-child{top:21.5px;transform:rotate(-45deg);}
/* ══ HERO ══════════════════════════════════════════════════════════════ */
.pr-hero{position:relative;min-height:clamp(560px,90svh,860px);display:flex;align-items:center;
overflow:hidden;background:var(--pr-navy);color:var(--pr-white);}
.pr-hero-in{position:relative;z-index:3;width:100%;
padding-top:calc(var(--pr-nav-h) + clamp(40px,7vw,80px));padding-bottom:clamp(64px,9vw,110px);}
.pr-hero-col{max-width:620px;}
.pr-hero h1{font-size:clamp(46px,7.6vw,92px);font-weight:500;line-height:1.02;letter-spacing:-.02em;}
.pr-hero-sub{font-size:clamp(18px,2vw,22px);line-height:1.5;max-width:30ch;margin-top:clamp(18px,2.4vw,26px);
color:rgba(255,255,255,.94);}
.pr-hero-acts{display:flex;flex-wrap:wrap;gap:14px;margin-top:clamp(28px,3.6vw,40px);}
/* ── Photographic placeholder ──
A dusk-coast tonal gradient plus a fine diagonal hatch, so it is never
mistaken for a photograph, and a visible corner tag on every instance.
Swapping in real photography means replacing .pr-ph with an . */
.pr-ph{position:absolute;inset:0;overflow:hidden;}
.pr-ph-hero{background:
radial-gradient(ellipse 60% 45% at 80% 16%,rgba(214,168,110,.42) 0%,rgba(214,168,110,0) 70%),
linear-gradient(176deg,#56626C 0%,#44505B 30%,#343F49 52%,#2A333C 72%,#232B33 100%);}
.pr-ph-hero::after{content:"";position:absolute;left:44%;right:-10%;top:48%;bottom:-20%;
background:linear-gradient(168deg,#3B4650 0%,#2C3640 60%);clip-path:polygon(0 38%,62% 0,100% 20%,100% 100%,0 100%);
opacity:.9;}
.pr-ph::before{content:"";position:absolute;inset:0;z-index:1;opacity:.12;
background:repeating-linear-gradient(135deg,transparent 0 14px,rgba(255,255,255,.6) 14px 15px);}
/* Chips are solid, not translucent, so a bright photograph behind them can
never erode the text on them. */
.pr-ph-tag{position:absolute;z-index:4;right:0;bottom:0;background:var(--pr-navy);color:var(--pr-on-navy);
font-size:10px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;padding:6px 10px;line-height:1.4;}
/* Scrim: heavy on the left where the text column sits, plus a darker band
under the nav so white nav text holds its floor over any photograph. */
.pr-hero-scrim{position:absolute;inset:0;z-index:2;background:
linear-gradient(180deg,rgba(18,25,32,.62) 0,rgba(18,25,32,0) 150px),
linear-gradient(90deg,rgba(18,25,32,.78) 0%,rgba(18,25,32,.6) 42%,rgba(18,25,32,.18) 78%,rgba(18,25,32,.1) 100%);}
/* ══ TRUST ROW ═════════════════════════════════════════════════════════ */
.pr-trust{background:var(--pr-paper-2);border-bottom:1px solid var(--pr-line);}
.pr-trust-in{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px 32px;
padding-top:22px;padding-bottom:22px;}
.pr-trust li{display:inline-flex;align-items:center;gap:10px;font-size:14px;font-weight:500;color:var(--pr-navy);}
.pr-trust svg{flex:none;}
/* ══ SERVICES ══════════════════════════════════════════════════════════ */
.pr-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(16px,2vw,28px);}
.pr-card{background:var(--pr-white);border:1px solid var(--pr-line);border-top:3px solid var(--pr-tan);
padding:clamp(26px,3vw,38px);display:flex;flex-direction:column;}
.pr-card-n{font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--pr-tan-ink);font-variant-numeric:tabular-nums;}
.pr-card h3{font-size:clamp(24px,2.4vw,30px);margin-top:14px;}
.pr-card>p:not(.pr-card-n){color:var(--pr-body);font-size:15.5px;margin-top:14px;}
.pr-card-list{margin-top:auto;padding-top:22px;}
.pr-card-list li{font-size:14px;color:var(--pr-navy);padding:9px 0 9px 22px;border-top:1px solid var(--pr-line);position:relative;}
.pr-card-list li::before{content:"";position:absolute;left:2px;top:17px;width:8px;height:2px;background:var(--pr-sage-dk);}
/* ══ GALLERY ═══════════════════════════════════════════════════════════ */
.pr-gal{background:var(--pr-navy);color:var(--pr-white);}
.pr-gal .pr-label{color:var(--pr-tan);}
.pr-gal .pr-lede{color:var(--pr-on-navy);}
.pr-gal-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,2.4vw,32px);}
.pr-proj-cap{padding-top:18px;}
.pr-proj-t{font-family:var(--pr-serif);font-size:clamp(21px,2vw,24px);font-weight:500;line-height:1.2;}
.pr-proj-m{color:var(--pr-on-navy-dim);font-size:14.5px;margin-top:5px;}
/* ── Before/after slider ──
--p is 0–100. Handle and clip are both computed against the range
input's thumb geometry (a 44px thumb whose centre travels from 22px to
width-22px), so the visible handle sits exactly under the real thumb —
which matters on touch browsers that only drag from the thumb itself. */
.pr-ba{--thumb:44px;--x:calc(var(--thumb) / 2 + (100% - var(--thumb)) * var(--p) / 100);
position:relative;aspect-ratio:4/3;overflow:hidden;background:#2A333C;user-select:none;-webkit-user-select:none;}
.pr-ba-layer{position:absolute;inset:0;}
.pr-ba-after{clip-path:inset(0 0 0 var(--x));}
.pr-ba-tag{position:absolute;z-index:2;left:10px;top:10px;background:var(--pr-navy);color:var(--pr-white);
font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;padding:4px 9px;line-height:1.4;}
.pr-ba-tag-r{left:auto;right:10px;}
.pr-ba-ph{right:auto;left:0;font-size:9.5px;}
.pr-ba-handle{position:absolute;z-index:3;top:0;bottom:0;left:var(--x);width:2px;margin-left:-1px;
background:var(--pr-white);pointer-events:none;}
.pr-ba-knob{position:absolute;top:50%;left:50%;width:40px;height:40px;margin:-20px 0 0 -20px;border-radius:50%;
background:var(--pr-white);box-shadow:0 1px 6px rgba(0,0,0,.3);}
/* Two chevrons, drawn in CSS so the knob needs no icon file. */
.pr-ba-knob::before,.pr-ba-knob::after{content:"";position:absolute;top:50%;width:7px;height:7px;margin-top:-3.5px;
border:solid var(--pr-navy);border-width:0 0 2px 2px;}
.pr-ba-knob::before{left:10px;transform:rotate(45deg);}
.pr-ba-knob::after{right:10px;transform:rotate(-135deg);}
.pr-ba-input{position:absolute;z-index:4;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:ew-resize;
-webkit-appearance:none;appearance:none;background:transparent;touch-action:pan-y;}
.pr-ba-input::-webkit-slider-runnable-track{height:100%;background:transparent;}
.pr-ba-input::-webkit-slider-thumb{-webkit-appearance:none;width:44px;height:100%;min-height:200px;background:transparent;}
.pr-ba-input::-moz-range-thumb{width:44px;height:100%;border:0;background:transparent;}
/* The input is invisible, so its focus ring is drawn on the frame and knob. */
.pr-ba:has(.pr-ba-input:focus-visible){outline:2px solid var(--pr-tan);outline-offset:4px;}
.pr-ba-input:focus-visible ~ .pr-ba-handle .pr-ba-knob{box-shadow:0 0 0 3px var(--pr-tan),0 1px 6px rgba(0,0,0,.3);}
/* Placeholder "photographs". BEFORE reads weathered — uneven courses,
patchy lichen-green tone. AFTER reads new — even, tight slate courses.
Hatch and tag mark both as placeholders. */
.pr-ba-before{background:
radial-gradient(ellipse 40% 30% at 30% 40%,rgba(120,128,92,.5),transparent 70%),
radial-gradient(ellipse 30% 25% at 72% 70%,rgba(140,120,90,.45),transparent 70%),
repeating-linear-gradient(174deg,rgba(0,0,0,.22) 0 2px,transparent 2px 19px,rgba(0,0,0,.12) 19px 21px,transparent 21px 33px),
linear-gradient(160deg,#6D6E62 0%,#57594F 45%,#4A4C45 100%);}
.pr-ba-after{background:
repeating-linear-gradient(180deg,rgba(0,0,0,.28) 0 2px,transparent 2px 18px),
repeating-linear-gradient(90deg,rgba(0,0,0,.12) 0 1px,transparent 1px 30px),
linear-gradient(160deg,#4A5663 0%,#3A4551 50%,#303A45 100%);}
.pr-ba-before::before,.pr-ba-after::before{content:"";position:absolute;inset:0;opacity:.1;
background:repeating-linear-gradient(135deg,transparent 0 14px,rgba(255,255,255,.6) 14px 15px);}
.pr-ba-before.v2{background:
radial-gradient(ellipse 35% 35% at 60% 35%,rgba(35,35,30,.55),transparent 70%),
repeating-linear-gradient(0deg,rgba(0,0,0,.2) 0 2px,transparent 2px 24px),
linear-gradient(150deg,#80705E 0%,#6A5E50 50%,#574E44 100%);}
.pr-ba-after.v2{background:
repeating-linear-gradient(0deg,rgba(0,0,0,.24) 0 2px,transparent 2px 24px),
repeating-linear-gradient(90deg,rgba(0,0,0,.1) 0 1px,transparent 1px 36px),
linear-gradient(150deg,#8A6E58 0%,#76604E 50%,#654F40 100%);}
.pr-ba-before.v3{background:
linear-gradient(180deg,#8B959B 0%,#8B959B 55%,transparent 55%),
linear-gradient(180deg,transparent 55%,#6E6A5E 55%,#6E6A5E 64%,transparent 64%),
radial-gradient(ellipse 25% 8% at 40% 60%,rgba(60,70,40,.6),transparent 70%),
linear-gradient(180deg,#8B959B 0%,#5C5F59 100%);}
.pr-ba-after.v3{background:
linear-gradient(180deg,#8F9CA3 0%,#8F9CA3 55%,transparent 55%),
linear-gradient(180deg,transparent 55%,#F2F2EE 55%,#F2F2EE 58%,#2F3439 58%,#2F3439 64%,transparent 64%),
linear-gradient(180deg,#8F9CA3 0%,#6B7176 100%);}
/* ══ REVIEWS ═══════════════════════════════════════════════════════════ */
.pr-revs{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--pr-line);}
.pr-rev{padding:clamp(28px,3vw,40px) clamp(20px,2.6vw,36px) 0;border-left:1px solid var(--pr-line);}
.pr-rev:first-child{border-left:0;padding-left:0;}
.pr-rev:last-child{padding-right:0;}
.pr-rev-mk{display:block;font-family:var(--pr-serif);font-size:56px;line-height:.6;color:var(--pr-tan);height:24px;}
.pr-rev blockquote{font-family:var(--pr-serif);font-size:clamp(18px,1.7vw,20px);line-height:1.5;color:var(--pr-navy);margin-top:14px;}
.pr-rev figcaption{margin-top:20px;font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--pr-muted);}
.pr-rev-note{margin-top:clamp(32px,4vw,48px);font-size:13px;color:var(--pr-muted);
border-left:2px solid var(--pr-tan);padding-left:12px;}
/* ══ CONTACT ═══════════════════════════════════════════════════════════ */
.pr-contact{background:var(--pr-paper-2);border-top:1px solid var(--pr-line);}
.pr-ct-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(40px,7vw,110px);align-items:start;}
.pr-ct-list{margin-top:clamp(28px,3.4vw,40px);display:grid;gap:26px;}
.pr-ct-list li{display:grid;grid-template-columns:22px 1fr;gap:16px;align-items:start;}
.pr-ct-list svg{margin-top:2px;}
.pr-ct-v{font-size:17px;font-weight:600;color:var(--pr-navy);text-decoration:none;word-break:break-word;}
a.pr-ct-v:hover{text-decoration:underline;text-decoration-color:var(--pr-tan);text-underline-offset:4px;}
.pr-ct-n{font-size:14.5px;color:var(--pr-body);margin-top:2px;}
.pr-form{display:grid;gap:18px;background:var(--pr-white);border:1px solid var(--pr-line);padding:clamp(24px,3.4vw,40px);}
.pr-field{display:grid;gap:7px;}
.pr-field label{font-size:14px;font-weight:600;color:var(--pr-navy);}
.pr-field label span{color:var(--pr-tan-ink);}
.pr-field input,.pr-field textarea{width:100%;background:var(--pr-white);border:1px solid #8A939B;border-radius:0;
padding:12px 14px;font-size:16px;line-height:1.4;transition:border-color .2s ease,box-shadow .2s ease;}
.pr-field textarea{resize:vertical;min-height:130px;}
.pr-field input:focus,.pr-field textarea:focus{outline:none;border-color:var(--pr-navy);box-shadow:0 0 0 1px var(--pr-navy);}
/* :user-invalid only after the visitor has interacted — no red fields on load. */
.pr-field input:user-invalid,.pr-field textarea:user-invalid{border-color:#A3322A;box-shadow:0 0 0 1px #A3322A;}
.pr-form-req{font-size:13px;color:var(--pr-muted);}
.pr-form .pr-btn{justify-self:start;}
.pr-form-done{background:var(--pr-white);border:1px solid var(--pr-line);border-top:3px solid var(--pr-tan);
padding:clamp(24px,3.4vw,40px);color:var(--pr-body);}
.pr-form-done:focus{outline:none;}
.pr-form-done-t{font-family:var(--pr-serif);font-size:26px;color:var(--pr-navy);margin-bottom:10px;}
/* ── Service area ── */
.pr-area{background:var(--pr-sage-lt);}
.pr-area-in{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(32px,6vw,90px);align-items:center;
padding-top:clamp(56px,7vw,96px);padding-bottom:clamp(56px,7vw,96px);}
.pr-area h3{font-size:clamp(28px,3.2vw,40px);}
.pr-area p{color:var(--pr-body);margin-top:14px;max-width:44ch;}
.pr-towns{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;}
.pr-towns li{font-size:14px;font-weight:500;color:var(--pr-navy);border:1px solid var(--pr-sage-dk);padding:5px 12px;}
.pr-map{margin:0;}
/* width/height attributes on the