/*
Theme Name: Dusk Engineering
Theme URI: https://duskengineering.services
Author: Dusk Engineering Services Ltd
Description: Technical theme for a software consultancy. Monospace typography, spec-table layouts, light/dark toggle. All front-page copy is editable under Appearance → Customize.
Version: 2.0.0
Requires at least: 6.0
Requires PHP: 7.4
License: GPL-2.0-or-later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: dusk-engineering
*/

/* ── Palette. --dusk-accent is injected from the Customizer. ─────────── */
:root{
  --dusk-bg:#f1f5f9;
  --dusk-surface:#f8fafc;
  --dusk-ink:#0f172a;
  --dusk-ink-dim:#475569;
  --dusk-rule:rgba(15,23,42,.12);
  --dusk-rule-soft:rgba(15,23,42,.06);
  --mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --wrap:1100px;
}
[data-theme="dark"]{
  --dusk-bg:#060914;
  --dusk-surface:#0a1020;
  --dusk-ink:#e2e8f0;
  --dusk-ink-dim:#94a3b8;
  --dusk-rule:rgba(226,232,240,.14);
  --dusk-rule-soft:rgba(226,232,240,.06);
}

*,*::before,*::after{box-sizing:border-box}
html{background:var(--dusk-bg)}
body{
  margin:0;
  font-family:var(--mono);
  font-size:14px;
  line-height:1.65;
  letter-spacing:-.01em;
  background:var(--dusk-bg);
  color:var(--dusk-ink);
  transition:background .4s ease,color .4s ease;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit}
h1,h2,h3{font-weight:600;letter-spacing:-.03em;line-height:1.15;margin:0}
p{margin:0}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}

.eyebrow{font-size:11px;opacity:.5;margin:0 0 .5rem}
.eyebrow::before{content:'// '}
.section-intro{color:var(--dusk-ink-dim);max-width:70ch;line-height:1.8;margin:1rem 0 0}

/* ── Header ─────────────────────────────────────────────────────────── */
.site-head{
  position:sticky;top:0;z-index:50;
  background:color-mix(in srgb,var(--dusk-bg) 88%,transparent);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--dusk-rule-soft);
}
.nav{
  max-width:var(--wrap);margin:0 auto;padding:14px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.nav-brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.mini-mark{
  width:30px;height:30px;flex:0 0 30px;
  display:flex;align-items:center;justify-content:center;
  background:var(--dusk-ink);color:var(--dusk-bg);
  font-weight:600;font-size:13px;
}
.brand-text{font-size:13px;font-weight:600}
.nav-links{display:flex;align-items:center;gap:22px}
.nav-links > a,.nav-menu a{font-size:13px;color:var(--dusk-ink-dim);text-decoration:none}
.nav-links > a::before,.nav-menu a::before{content:'/';opacity:.45}
.nav-links > a:hover,.nav-menu a:hover{color:var(--dusk-accent)}
.nav-menu{display:flex;gap:22px;list-style:none;margin:0;padding:0}
.nav-links .cta{
  border:1px solid var(--dusk-ink);background:var(--dusk-ink);color:var(--dusk-bg);
  padding:9px 18px;
}
.nav-links .cta::before{content:'$ ';opacity:.6}
.nav-links .cta:hover{background:transparent;color:var(--dusk-ink)}
.theme-toggle{
  width:34px;height:34px;flex:0 0 34px;
  display:flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid currentColor;color:var(--dusk-ink);
  opacity:.55;cursor:pointer;padding:0;
}
.theme-toggle:hover{opacity:1}
.theme-toggle svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round}
.theme-toggle .icon-sun{display:none}
[data-theme="dark"] .theme-toggle .icon-sun{display:block}
[data-theme="dark"] .theme-toggle .icon-moon{display:none}
@media(max-width:760px){
  .nav-links > a:not(.cta),.nav-menu{display:none}
}

/* ── Buttons ────────────────────────────────────────────────────────── */
.btn{
  display:inline-block;text-decoration:none;
  font-size:13px;font-weight:500;padding:12px 24px;
  border:1px solid var(--dusk-rule);color:var(--dusk-ink);
  background:transparent;cursor:pointer;font-family:inherit;
  transition:background .2s,border-color .2s,color .2s;
}
.btn::before{content:'→ ';opacity:.6}
.btn:hover{border-color:var(--dusk-ink)}
.btn.primary{background:var(--dusk-ink);border-color:var(--dusk-ink);color:var(--dusk-bg)}
.btn.primary::before{content:'$ '}
.btn.primary:hover{background:transparent;color:var(--dusk-ink)}

/* ── Hero ───────────────────────────────────────────────────────────── */
.hero{
  position:relative;overflow:hidden;isolation:isolate;
  padding:clamp(4rem,9vw,7rem) 0 6rem;
}
#dusk-network{position:absolute;inset:0;pointer-events:none;opacity:.28;z-index:-1}
.hero-title{font-size:clamp(38px,6.5vw,76px);letter-spacing:-.045em;line-height:1.08}
.hero-title span{display:block}
.hero-title .accent{color:var(--dusk-accent)}
.hero-title .muted{color:var(--dusk-ink-dim)}
.hero .lede{
  border-left:2px solid var(--dusk-accent);padding-left:20px;
  max-width:62ch;color:var(--dusk-ink-dim);line-height:1.8;
  margin:2.25rem 0 2.5rem;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}

/* ── Sections ───────────────────────────────────────────────────────── */
section{border-top:1px solid var(--dusk-rule-soft);padding:6rem 0}
.hero{border-top:0}
section h2{font-size:clamp(24px,3vw,34px);margin-bottom:2.5rem}
section .section-intro + .rows,
section .section-intro + .tiles{margin-top:2.5rem}
section h2 + .section-intro{margin-top:-1.75rem;margin-bottom:2.5rem}

/* ── Spec table: services + engagement ──────────────────────────────── */
.rows{border-top:1px solid var(--dusk-rule)}
.row{
  display:grid;grid-template-columns:64px minmax(140px,200px) 1fr;
  gap:24px;align-items:baseline;
  padding:22px 4px;
  border-bottom:1px solid var(--dusk-rule);
  transition:background .2s,padding .2s;
}
.row:hover{background:var(--dusk-surface);padding-left:12px;padding-right:12px}
.row-num{font-size:12px;opacity:.4}
.row-title{font-size:14px}
.row-desc{font-size:13px;color:var(--dusk-ink-dim);line-height:1.7}
@media(max-width:760px){
  .row{grid-template-columns:40px 1fr;gap:8px 16px}
  .row-desc{grid-column:2}
}

/* ── About tiles ────────────────────────────────────────────────────── */
.tiles{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--dusk-rule)}
.tile{
  border-bottom:1px solid var(--dusk-rule);
  padding:22px 20px 22px 0;transition:background .2s;
}
.tile:nth-child(odd){border-right:1px solid var(--dusk-rule)}
.tile:nth-child(even){padding-left:20px;padding-right:0}
.tile:hover{background:var(--dusk-surface)}
.tile h3{font-size:13px;margin-bottom:.5rem}
.tile h3::before{content:'▸ ';opacity:.4}
.tile p{font-size:12.5px;color:var(--dusk-ink-dim);line-height:1.7}
@media(max-width:760px){
  .tiles{grid-template-columns:1fr}
  .tile,.tile:nth-child(odd),.tile:nth-child(even){border-right:0;padding-left:0;padding-right:0}
}

/* ── Contact form ───────────────────────────────────────────────────── */
.enquiry{border:1px solid var(--dusk-rule);padding:28px;max-width:640px;margin-top:2rem}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:18px}
.field label{display:block;font-size:11px;opacity:.55;margin-bottom:8px}
.field label::before{content:'> '}
.field input,.field textarea{
  width:100%;font-family:inherit;font-size:13px;
  background:var(--dusk-surface);color:var(--dusk-ink);
  border:1px solid var(--dusk-rule);padding:12px 14px;
}
.field input:focus,.field textarea:focus{outline:2px solid var(--dusk-accent);outline-offset:-2px}
.field textarea{resize:vertical;min-height:120px}
.hp{position:absolute;left:-9999px}
.form-note{font-size:11px;opacity:.5;margin-top:14px}
.notice{border-left:2px solid var(--dusk-accent);padding:12px 16px;margin:0 0 20px;font-size:13px;background:var(--dusk-surface)}
.notice.is-error{border-left-color:#dc2626}
.contact-direct{margin-top:1.5rem;font-size:13px}
.contact-direct a{color:var(--dusk-accent)}
@media(max-width:600px){.form-row{grid-template-columns:1fr;gap:0}.enquiry{padding:20px}}

/* ── Footer ─────────────────────────────────────────────────────────── */
.site-foot{border-top:1px solid var(--dusk-rule);padding:3rem 0 2rem;font-size:12px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:2rem}
.site-foot h2{font-size:12px;margin-bottom:1rem}
.site-foot h3{font-size:12px;margin-bottom:1rem}
.site-foot p{color:var(--dusk-ink-dim)}
.site-foot ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.6rem}
.site-foot a{color:var(--dusk-ink-dim);text-decoration:none}
.site-foot a:hover{color:var(--dusk-accent)}
.foot-base{margin-top:2.5rem;padding-top:1.5rem;border-top:1px solid var(--dusk-rule-soft)}
.foot-base p{color:var(--dusk-ink-dim)}
@media(max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.foot-grid{grid-template-columns:1fr}}

/* ── Long-form pages ────────────────────────────────────────────────── */
.prose{padding:5rem 0}
.prose h1{font-size:clamp(28px,4vw,44px);margin-bottom:1.5rem}
.prose h2{font-size:20px;margin:2.5rem 0 .75rem}
.prose p,.prose li{color:var(--dusk-ink-dim);line-height:1.8;margin-bottom:.9rem}
.prose ul,.prose ol{padding-left:22px}
.prose strong{color:var(--dusk-ink)}
.prose .meta{font-size:12px;opacity:.6}
.prose a{color:var(--dusk-accent)}
.prose .dusk-callout,.prose .placeholder{
  border-left:2px solid var(--dusk-accent);
  background:var(--dusk-surface);
  padding:16px 20px;font-size:13px;margin:1.5rem 0;
}

@media(prefers-reduced-motion:reduce){
  #dusk-network{display:none}
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
}