/* ==========================================================================
   Diamond Quality Floors — brand system
   ========================================================================== */

:root {
  /* Diamond Quality Floors brand — black + electric blue */
  --color-ink: #0a0e15;             /* near-black */
  --color-ink-2: #141a24;
  --color-muted: #5a6475;
  --color-line: #e6e8ee;
  --color-bg: #ffffff;
  --color-bg-alt: #f4f7fb;
  --color-accent: #169cff;          /* DQF electric blue */
  --color-accent-dark: #0a6fb8;
  --color-accent-glow: rgba(22,156,255,.22);
  --color-steel: #0e4a7a;
  --color-steel-dark: #062f52;
  --color-success: #1f8a4c;
  --color-danger: #b0223a;

  --radius: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 2px rgba(11,19,32,.06), 0 2px 6px rgba(11,19,32,.06);
  --shadow-md: 0 8px 24px rgba(11,19,32,.10);
  --container: 1180px;
  --transition: 180ms ease;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, Helvetica, Arial, sans-serif;
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--color-steel); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { line-height: 1.15; margin: 0 0 .5em; color: var(--color-ink); }
h1 { font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -.01em; }
h2 { font-size: clamp(1.5rem, 2.5vw, 2.1rem); letter-spacing: -.01em; }
h3 { font-size: 1.2rem; }
p  { margin: 0 0 1rem; }
.eyebrow {
  display: inline-block;
  font-size: .8rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 700;
  margin-bottom: .5rem;
}

.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }
.section   { padding: 72px 0; }
.section--tight { padding: 48px 0; }
.section--alt { background: var(--color-bg-alt); }
.section--dark { background: var(--color-ink); color: #e7ebf3; }
.section--dark h1, .section--dark h2, .section--dark h3 { color: #fff; }

/* ---- Top bar / Header ---- */
.topbar {
  background: var(--color-ink);
  color: #c8d0dd;
  font-size: .88rem;
}
.topbar .container {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 8px; padding-bottom: 8px;
  gap: 16px; flex-wrap: wrap;
}
.topbar a { color: #fff; }
.topbar strong { color: var(--color-accent); }

.header {
  position: sticky; top: 0; z-index: 50;
  background: #fff;
  border-bottom: 1px solid var(--color-line);
}
.header .container {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 14px; padding-bottom: 14px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 800; letter-spacing: -.01em; color: var(--color-ink);
  font-size: 1.1rem;
}
.brand:hover { text-decoration: none; }
.brand-logo {
  width: 38px; height: 38px; border-radius: 6px; object-fit: cover;
  background: #000; box-shadow: 0 1px 2px rgba(0,0,0,.12);
}
.brand-name { display: flex; flex-direction: column; line-height: 1.05; }
.brand-name span { font-size: .72rem; font-weight: 600; color: var(--color-accent); letter-spacing: .08em; text-transform: uppercase; }
.nav { display: flex; align-items: center; gap: 22px; }
.nav a { color: var(--color-ink-2); font-weight: 500; }
.nav a:hover { color: var(--color-steel); text-decoration: none; }
.nav-toggle {
  display: none; background: transparent; border: 1px solid var(--color-line);
  padding: 8px 10px; border-radius: var(--radius-sm); cursor: pointer;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  padding: 14px 22px;
  border-radius: var(--radius);
  font-weight: 700; font-size: 1rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), background var(--transition), box-shadow var(--transition);
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 4px 14px var(--color-accent-glow);
}
.btn-primary:hover { background: var(--color-accent-dark); color: #fff; }
.btn-secondary {
  background: transparent; color: #fff; border-color: rgba(255,255,255,.5);
}
.btn-secondary:hover { background: rgba(255,255,255,.1); }
.btn-ghost {
  background: #fff; color: var(--color-ink); border-color: var(--color-line);
}
.btn-ghost:hover { background: var(--color-bg-alt); }
.btn-block { width: 100%; }

/* ---- Hero ---- */
.hero {
  position: relative;
  background:
    linear-gradient(135deg, rgba(10,14,21,.92) 0%, rgba(20,26,36,.82) 100%),
    radial-gradient(1000px 500px at 85% 15%, rgba(22,156,255,.35), transparent 65%),
    radial-gradient(800px 400px at 10% 90%, rgba(22,156,255,.12), transparent 65%),
    #060913;
  color: #fff;
  padding: 96px 0 80px;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute; top: -10%; right: -5%; width: 520px; height: 520px;
  background-image: url("images/dqf_icon.jpg");
  background-size: cover; background-position: center;
  opacity: .22; filter: blur(.4px);
  mix-blend-mode: screen;
  pointer-events: none;
  border-radius: 50%;
}
.hero > .container { position: relative; z-index: 1; }
.hero h1 { color: #fff; max-width: 18ch; }
.hero p  { font-size: 1.15rem; max-width: 54ch; color: #d4dbe6; }
.hero .cta-row { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 24px; }
.hero .badges {
  display: flex; gap: 18px; flex-wrap: wrap; margin-top: 28px; color: #c9d2e0; font-size: .9rem;
}
.hero .badges span::before { content: "✓"; color: var(--color-accent); font-weight: 800; margin-right: 6px; }

/* Promo banner (e.g., $200 off) */
.promo-strip {
  background: var(--color-accent);
  color: #fff;
  text-align: center;
  padding: 8px 16px;
  font-weight: 700;
  font-size: .95rem;
  letter-spacing: .02em;
}
.promo-strip a { color: #fff; text-decoration: underline; }

/* ---- Trust bar ---- */
.trust {
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  background: #fff;
}
.trust .container {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  padding-top: 28px; padding-bottom: 28px; text-align: center;
}
.trust strong { display: block; font-size: 1.6rem; color: var(--color-ink); }
.trust span { color: var(--color-muted); font-size: .9rem; }

/* ---- Service cards ---- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.card {
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: #d5dae4; }
.card h3 { margin-top: 10px; }
.card .icon {
  width: 44px; height: 44px; border-radius: 10px;
  background: linear-gradient(135deg, var(--color-accent), #4fc0ff);
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 800;
  box-shadow: 0 3px 10px var(--color-accent-glow);
}
.card .link-arrow {
  display: inline-flex; align-items: center; gap: 6px; font-weight: 700; color: var(--color-steel);
  margin-top: 8px;
}

/* ---- Process steps ---- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: step; }
.step {
  background: #fff; border: 1px solid var(--color-line); border-radius: var(--radius);
  padding: 22px;
}
.step::before {
  counter-increment: step;
  content: counter(step);
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--color-accent); color: #fff;
  font-weight: 800; margin-bottom: 12px;
}

/* ---- Testimonials ---- */
.quote {
  background: #fff; border-left: 4px solid var(--color-accent);
  padding: 22px 24px; border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}
.quote p { font-size: 1.05rem; color: var(--color-ink-2); }
.quote .who { color: var(--color-muted); font-size: .9rem; margin-top: 8px; }

/* ---- FAQ ---- */
.faq details {
  background: #fff; border: 1px solid var(--color-line); border-radius: var(--radius);
  padding: 14px 18px; margin-bottom: 10px;
}
.faq summary { cursor: pointer; font-weight: 600; }
.faq details[open] { box-shadow: var(--shadow-sm); }

/* ---- Forms ---- */
.form-wrap {
  background: #fff; border: 1px solid var(--color-line); border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow-sm);
}
.form-wrap h2 { margin-top: 0; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid .full { grid-column: 1 / -1; }
.field label {
  display: block; font-size: .88rem; font-weight: 600; margin-bottom: 6px; color: var(--color-ink-2);
}
.field input, .field select, .field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #cfd4de;
  border-radius: var(--radius-sm);
  font-size: 1rem; font-family: inherit; color: var(--color-ink);
  background: #fff;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(201,162,39,.2);
}
.field textarea { min-height: 110px; resize: vertical; }
.field .hint { display: block; font-size: .8rem; color: var(--color-muted); margin-top: 4px; }
.field.required label::after { content: " *"; color: var(--color-danger); }
.form-consent { font-size: .85rem; color: var(--color-muted); margin-top: 10px; }
.form-note {
  background: var(--color-bg-alt); border-radius: var(--radius-sm);
  padding: 12px 14px; font-size: .9rem; color: var(--color-ink-2); margin-bottom: 16px;
}

/* ---- Split: copy + form ---- */
.split {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; align-items: start;
}

/* ---- CTA banner ---- */
.cta-banner {
  background: linear-gradient(135deg, var(--color-steel-dark), var(--color-steel));
  color: #fff; border-radius: var(--radius); padding: 40px; text-align: center;
}
.cta-banner h2 { color: #fff; }
.cta-banner p  { color: #cfdaea; max-width: 60ch; margin: 0 auto 20px; }

/* ---- Footer ---- */
.footer {
  background: var(--color-ink);
  color: #b9c2d2;
  padding: 48px 0 24px;
  font-size: .93rem;
}
.footer h4 { color: #fff; font-size: 1rem; margin-bottom: 12px; }
.footer a { color: #cfd6e3; }
.footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 36px; }
.footer-bottom {
  margin-top: 28px; padding-top: 18px; border-top: 1px solid #1f2a3d;
  display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap;
  color: #8390a5; font-size: .85rem;
}

/* ---- Utility ---- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.lead { font-size: 1.1rem; color: var(--color-ink-2); }

/* ---- Responsive ---- */
@media (max-width: 960px) {
  .grid-3, .steps { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav { display: none; }
  .nav.open { display: flex; position: absolute; top: 62px; left: 0; right: 0;
    flex-direction: column; background: #fff; border-bottom: 1px solid var(--color-line);
    padding: 16px 20px; gap: 14px; }
  .nav-toggle { display: inline-flex; }
  .section { padding: 56px 0; }
  .hero { padding: 64px 0 56px; }
  .grid-3, .grid-2, .steps, .trust .container, .footer-grid {
    grid-template-columns: 1fr;
  }
  .form-grid { grid-template-columns: 1fr; }
  .cta-banner { padding: 28px 20px; }
}