/* ==========================================================================
   GapLogix — Phase 1 website. Design system.
   Built WeWeb-migration-friendly: all design decisions live as tokens (vars),
   layout is semantic + section-based, components are reusable.
   ========================================================================== */

/* ---- Design tokens ------------------------------------------------------- */
:root {
  /* colour (sampled from GL Website DRAFT v1.1 + Build Notes v1.2) */
  --bg:            #0A0A0B;   /* near-black charcoal */
  --bg-elev:       #111215;   /* cards / panels */
  --bg-elev-2:     #16171B;   /* deeper panels (G. mark, side panels) */
  --border:        rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.16);
  --text:          #FFFFFF;   /* headings / primary */
  --text-muted:    #E2E5E9;   /* body copy */
  --text-dim:      #6B6E74;   /* labels, legal */
  --accent:        #B0FC51;   /* lime highlight */
  --accent-ink:    #0A0A0B;   /* text on accent fills */
  --accent-soft:   rgba(176,252,81,0.10);

  /* type */
  --font: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  --fs-eyebrow: 0.78rem;
  --fs-body:    1.0625rem;   /* 17px */
  --fs-body-sm: 0.95rem;
  --fs-h3:      1.35rem;
  --fs-h2:      clamp(1.9rem, 1.2rem + 2.4vw, 3rem);
  --fs-hero:    clamp(2.6rem, 1.4rem + 4.6vw, 4.6rem);
  --lh-tight:   1.08;
  --lh-snug:    1.3;
  --lh-body:    1.7;

  /* spacing / shape */
  --container: 1680px;
  --gutter: clamp(24px, 4vw, 72px);
  --section-y: clamp(80px, 6vw, 128px);
  --radius: 14px;
  --radius-sm: 10px;
}

/* ---- Reset / base -------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--text-muted);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { color: var(--text); line-height: var(--lh-tight); font-weight: 600; letter-spacing: -0.02em; margin: 0 0 .5em; }
p { margin: 0 0 1.1em; }
a { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; display: block; }
ul { margin: 0; padding: 0; list-style: none; }

/* ---- Layout helpers ------------------------------------------------------ */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: var(--section-y); }
.section--tight { padding-block: clamp(40px, 3vw, 64px); }
.eyebrow {
  display: inline-block; color: var(--accent);
  font-size: var(--fs-eyebrow); font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase; margin-bottom: 1rem;
}
.muted { color: var(--text-muted); }
.lead { font-size: 1.15rem; max-width: 46ch; }
.center { text-align: center; }
.text-right { text-align: right; }
.divider { height: 1px; background: var(--border); border: 0; margin: 0; }

/* ---- Buttons ------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; gap: .55em;
  font-size: .98rem; font-weight: 600; letter-spacing: .01em;
  padding: .8em 1.4em; border-radius: 8px; cursor: pointer;
  border: 1px solid transparent; transition: transform .15s ease, background .2s ease, border-color .2s ease, color .2s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: #c2ff75; }
.btn-secondary { background: transparent; color: var(--text); border-color: var(--border-strong); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }
.btn .arrow { transition: transform .2s ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* ---- Header / nav -------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10,10,11,0.82); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.brand { color: var(--text); font-weight: 700; font-size: 1.3rem; letter-spacing: -0.02em; }
.brand .dot { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 1.6rem; }
.nav-links a { font-size: .94rem; color: var(--text-muted); transition: color .2s ease; }
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--text); }
.nav-links a.active::after { content: ""; display: block; height: 2px; background: var(--accent); margin-top: 6px; border-radius: 2px; }
.nav-cta { display: flex; align-items: center; gap: 1rem; }
.nav-toggle { display: none; background: none; border: 0; color: var(--text); cursor: pointer; padding: 8px; }

/* ---- Hero ---------------------------------------------------------------- */
.hero { padding-block: clamp(64px, 6vw, 120px) clamp(40px, 4vw, 72px); }
.hero h1 { font-size: var(--fs-hero); font-weight: 700; letter-spacing: -0.035em; max-width: 16ch; }
.hero h1 .accent { color: var(--accent); display: block; }
.hero-body { max-width: 52ch; margin-bottom: 1.4rem; }
.hero-support { color: var(--accent); font-weight: 500; margin-bottom: 2rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; }
/* two-column hero: text left, wireframe building right (matches v1.1) */
/* full-width hero: text aligned to the container on the left, image bleeds to the right viewport edge */
.hero .hero-grid { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.25fr); gap: clamp(1.5rem, 3vw, 3rem); align-items: stretch; }
.hero-text { min-width: 0; align-self: center; padding-left: max(var(--gutter), calc((100vw - var(--container)) / 2 + var(--gutter))); padding-right: clamp(1rem, 2vw, 2rem); }
.hero-visual { min-width: 0; display: flex; }
.hero-visual img { width: 100%; height: 100%; object-fit: cover; object-position: center; display: block; }

/* ---- Value strip --------------------------------------------------------- */
.value-strip { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--border); }
.value { background: var(--bg); padding: 2.2rem clamp(1.2rem, 2vw, 2.2rem); }
.value .icon { color: var(--accent); margin-bottom: 1.1rem; }
.value h3 { font-size: .92rem; letter-spacing: .12em; text-transform: uppercase; color: var(--text); margin-bottom: .5rem; }
.value p { font-size: var(--fs-body-sm); margin: 0; }

/* ---- Generic section heading -------------------------------------------- */
.section-head { max-width: 60ch; margin-bottom: clamp(2rem, 3vw, 2.5rem); }
.section-head h2 { font-size: var(--fs-h2); font-weight: 700; }
/* centered statement section (e.g. "Built for the Reality of Construction") */
.section-head--center { max-width: 68rem; margin-inline: auto; text-align: center; margin-bottom: 0; }
.section-head--center .eyebrow { letter-spacing: 0.2em; }
.section-head--center h2 { margin-inline: auto; margin-bottom: 1.4rem; }
.section-head--center p { margin-inline: auto; max-width: 60ch; }

/* ---- Cards (steps / services / generic) --------------------------------- */
.grid { display: grid; gap: 20px; }
.grid-5 { grid-template-columns: repeat(5, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.7rem 1.5rem;
  transition: border-color .2s ease, transform .2s ease;
}
.card:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.card .num { color: var(--accent); font-size: 1.05rem; font-weight: 700; letter-spacing: .05em; margin-bottom: 1rem; }
.card .icon { color: var(--accent); margin-bottom: 1rem; }
.card h3 { font-size: var(--fs-h3); margin-bottom: .5rem; }
.card p { font-size: var(--fs-body-sm); margin: 0; }

/* ---- CTA band ------------------------------------------------------------ */
.cta-band { border-top: 1px solid var(--border); }
.cta-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 2rem; }
.cta-inner h2 { font-size: clamp(1.7rem, 1rem + 2.2vw, 2.6rem); max-width: 18ch; margin: 0; }
.cta-inner .cta-copy { max-width: 46ch; }

/* ---- Footer -------------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--border); padding-block: clamp(48px, 4vw, 72px) 2rem; }
.footer-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr 1.2fr; gap: 2rem; }
.footer-brand .brand { display: inline-block; margin-bottom: 1rem; }
.footer-brand p { font-size: var(--fs-body-sm); max-width: 34ch; }
.footer-col h4 { font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 1rem; font-weight: 600; }
.footer-col li { margin-bottom: .6rem; }
.footer-col a, .footer-col span { font-size: var(--fs-body-sm); color: var(--text-muted); }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; align-items: center; margin-top: 3rem; padding-top: 1.6rem; border-top: 1px solid var(--border); }
.footer-bottom, .footer-bottom a { font-size: .85rem; color: var(--text-dim); }
.footer-bottom a:hover { color: var(--accent); }
.footer-legal-links { display: flex; gap: 1.4rem; }

/* ---- Inner pages: components -------------------------------------------- */
.page-head { padding-block: clamp(56px, 5vw, 100px) clamp(8px, 1vw, 20px); }
.page-head h1 { font-size: clamp(2.2rem, 1.4rem + 2.6vw, 3.4rem); }
.page-head .lead { margin-top: .25rem; }
.intro-block { max-width: 64ch; }
.intro-block h2 { font-size: var(--fs-h3); margin-top: 1rem; margin-bottom: .5rem; }

/* split two-column (text + visual / panel) */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 4vw, 4rem); align-items: center; }
.split-text { min-width: 0; }
.panel { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.panel img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* G. monogram panel */
.mono-panel { background: var(--bg-elev-2); border: 1px solid var(--border); border-radius: var(--radius); display: grid; place-items: center; min-height: 320px; padding: 2rem; }
.mono { font-size: clamp(6rem, 12vw, 12rem); font-weight: 700; color: var(--text); letter-spacing: -0.04em; line-height: 1; }
.mono .dot { color: var(--accent); }

/* vertical step list (How It Works, Framework pathway) */
.step-list { display: flex; flex-direction: column; }
.step-row { display: grid; grid-template-columns: 3rem 1fr; gap: 1.2rem; padding: 1.6rem 0; border-top: 1px solid var(--border); }
.step-row:first-child { border-top: 0; }
.step-row .step-num { color: var(--accent); font-weight: 700; font-size: 1.25rem; }
.step-row h3 { margin-bottom: .35rem; font-size: 1.2rem; }
.step-row p { margin: 0; font-size: var(--fs-body-sm); }

/* statement panel (Clarity changes everything / outcomes) */
.statement { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: clamp(2rem, 4vw, 3.5rem); }
.statement h2 { font-size: clamp(1.7rem, 1.1rem + 2vw, 2.6rem); }
.statement .lines p { margin: 0; color: var(--text-muted); }
.statement .mono { font-size: clamp(3rem, 6vw, 5rem); margin-top: 1.5rem; }

/* contact */
.contact-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: clamp(2rem, 4vw, 4rem); align-items: start; }
.contact-details .detail { margin-bottom: 1.3rem; }
.contact-details .detail .label { font-size: .76rem; letter-spacing: .14em; text-transform: uppercase; color: var(--text-dim); display: block; margin-bottom: .3rem; }
.contact-details .detail a, .contact-details .detail span { color: var(--text); }
.form-card { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: clamp(1.5rem, 3vw, 2.4rem); }
.form-field { margin-bottom: 1.2rem; }
.form-field label { display: block; font-size: .9rem; color: var(--text); margin-bottom: .5rem; }
.form-field input, .form-field select, .form-field textarea {
  width: 100%; background: var(--bg); border: 1px solid var(--border-strong); border-radius: 8px;
  color: var(--text); font: inherit; font-size: .98rem; padding: .8em .9em;
}
.form-field input::placeholder, .form-field textarea::placeholder { color: var(--text-dim); }
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { outline: none; border-color: var(--accent); }
.form-field textarea { min-height: 150px; resize: vertical; }
.checkbox-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .7rem; }
.checkbox-grid label { display: flex; align-items: center; gap: .55rem; font-size: var(--fs-body-sm); color: var(--text-muted); }
.checkbox-grid input { width: auto; accent-color: var(--accent); }
.form-note { font-size: var(--fs-body-sm); color: var(--text-dim); margin-top: 1rem; }
.req { color: var(--accent); }

@media (max-width: 860px) {
  .split { grid-template-columns: 1fr; }
  .split .panel, .split .mono-panel { order: -1; }
  .contact-grid { grid-template-columns: 1fr; }
  .checkbox-grid { grid-template-columns: 1fr; }
}

/* ---- Responsive ---------------------------------------------------------- */
@media (max-width: 960px) {
  .hero .hero-grid { grid-template-columns: 1fr; gap: 2.4rem; }
  .hero-text { padding-left: var(--gutter); padding-right: var(--gutter); }
  .hero-visual { order: 2; }
  .hero-visual img { height: auto; object-fit: contain; }
  .grid-5 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 2rem 1.5rem; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 720px) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
  .site-header.open .nav-links {
    display: flex; position: absolute; left: 0; right: 0; top: 70px;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--border); padding: .5rem var(--gutter) 1.2rem;
  }
  .site-header.open .nav-links a { padding: .7rem 0; width: 100%; }
  .site-header.open .nav-links a.active::after { display: none; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 560px) {
  .grid-5, .grid-4, .grid-3, .grid-2, .value-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
}