/* ==========================================================================
   ZW Flooring Limited — Landing page
   Stack: vanilla HTML/CSS + Fontshare (Clash Display + Satoshi) + Lucide + GSAP
   Brand: charcoal / teal #0FA3A6 / purple #7B4DBA / silver, angular & energetic
   ========================================================================== */

:root {
  /* Type */
  --font-heading: "Clash Display", "Satoshi", system-ui, sans-serif;
  --font-body: "Satoshi", system-ui, -apple-system, sans-serif;

  /* Brand colour — exact brand values + accessible variants for dark UI */
  --color-primary: #0fa3a6;          /* teal */
  --color-primary-light: #2cc7c4;
  --color-primary-dark: #0b7d80;
  --color-secondary: #7b4dba;        /* purple (fills/shapes) */
  --color-secondary-light: #b790e2;  /* purple for text/accents on dark */
  --color-accent: #d1d5db;           /* silver */

  /* Neutrals — tinted toward a cool charcoal, never pure #000/#fff */
  --color-bg: #131418;
  --color-surface: #1a1c22;
  --color-surface-2: #22252d;
  --color-text: #edeef2;
  --color-text-muted: #9da2ad;
  --color-border: #2c2f38;
  --color-border-strong: #3a3e49;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 0.875rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4.5rem;
  --space-2xl: 7rem;

  /* Layout */
  --content-w: 1200px;
  --edge: clamp(1.25rem, 5vw, 4rem);

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 999px;

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 0.18s;
  --duration-normal: 0.32s;
  --duration-slow: 0.6s;
}

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

* { margin: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
::selection { background: var(--color-primary); color: #06141a; }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.01em;
}

/* ---------- Layout helpers ---------- */
.wrap {
  width: 100%;
  max-width: var(--content-w);
  margin-inline: auto;
  padding-inline: var(--edge);
}

.section { padding-block: var(--space-2xl); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-primary-light);
}
.eyebrow::before {
  content: "";
  width: 26px; height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  transform: skewX(-20deg);
}

.section-head { max-width: 640px; margin-bottom: var(--space-lg); }
.section-head h2 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-style: italic;
  margin-top: 0.75rem;
}
.section-head p {
  margin-top: 1rem;
  color: var(--color-text-muted);
  font-size: 1.05rem;
}
.accent-teal { color: var(--color-primary-light); }
.accent-purple { color: var(--color-secondary-light); }

/* ---------- Buttons (shadcn-adapted) ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.98rem;
  letter-spacing: 0.01em;
  transition: transform var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px) scale(0.99); }
.btn [data-lucide] { width: 18px; height: 18px; }

.btn-primary {
  background: var(--color-primary);
  color: #06141a;
  box-shadow: 0 8px 22px -10px rgba(15, 163, 166, 0.7);
}
.btn-primary:hover { background: var(--color-primary-light); transform: translateY(-2px); }

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border-strong);
}
.btn-secondary:hover {
  border-color: var(--color-secondary-light);
  color: var(--color-secondary-light);
  transform: translateY(-2px);
}

.btn-ghost { background: transparent; color: var(--color-text-muted); padding-inline: 0.5rem; }
.btn-ghost:hover { color: var(--color-text); }

.btn-block { width: 100%; }

/* ---------- Header / nav ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  transition: background-color var(--duration-normal) var(--ease-out),
              border-color var(--duration-normal) var(--ease-out),
              backdrop-filter var(--duration-normal) var(--ease-out);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(19, 20, 24, 0.82);
  backdrop-filter: blur(12px);
  border-bottom-color: var(--color-border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.nav-logo { display: flex; align-items: center; gap: 0.6rem; }
.nav-logo img { height: 42px; width: auto; }
.nav-links { display: flex; align-items: center; gap: 2rem; }
.nav-links a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  transition: color var(--duration-fast) var(--ease-out);
}
.nav-links a:hover { color: var(--color-text); }
.nav-cta { display: flex; align-items: center; gap: 0.75rem; }
.nav-toggle { display: none; background: none; border: 0; color: var(--color-text); padding: 0.4rem; }

/* mobile nav sheet */
.nav-sheet {
  display: none;
  position: fixed;
  inset: 76px 0 auto 0;
  z-index: 49;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem var(--edge) 1.5rem;
}
.nav-sheet.open { display: block; }
.nav-sheet a {
  display: block;
  padding: 0.85rem 0.25rem;
  font-family: var(--font-heading);
  font-weight: 500;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}
.nav-sheet .btn { margin-top: 1rem; }

/* ---------- Hero ---------- */
.hero { position: relative; padding-top: 120px; overflow: hidden; }
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 50% at 12% 8%, rgba(15, 163, 166, 0.16), transparent 60%),
    radial-gradient(55% 55% at 92% 92%, rgba(123, 77, 186, 0.18), transparent 60%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
  padding-block: clamp(2rem, 5vw, 4rem) var(--space-2xl);
}
.hero-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-size: 0.82rem;
  font-weight: 500;
}
.hero-chip [data-lucide] { width: 15px; height: 15px; color: var(--color-primary-light); }
.hero h1 {
  font-size: clamp(2.7rem, 7vw, 5.1rem);
  font-style: italic;
  margin-top: 1.25rem;
  text-transform: uppercase;
}
.hero h1 .line { display: block; }
.hero-sub {
  margin-top: 1.5rem;
  max-width: 30rem;
  font-size: 1.12rem;
  color: var(--color-text-muted);
}
.hero-actions { margin-top: 2rem; display: flex; flex-wrap: wrap; gap: 0.9rem; }
.hero-meta {
  margin-top: 2rem;
  display: flex;
  gap: 1.75rem;
  flex-wrap: wrap;
  color: var(--color-text-muted);
  font-size: 0.92rem;
}
.hero-meta b { color: var(--color-text); font-family: var(--font-heading); font-weight: 600; }

/* Angled image panel — the one flair effect, echoes the logo's diagonal */
.hero-media { position: relative; }
.hero-media .frame {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-lg);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 4%, 100% 100%, 0 96%);
  border: 1px solid var(--color-border);
}
.hero-media .frame img { width: 100%; height: 100%; object-fit: cover; }
.hero-media .slash {
  position: absolute;
  right: -18px; bottom: 34px;
  width: 62%; height: 16px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  transform: skewX(-22deg);
  border-radius: 3px;
  z-index: 2;
}
.hero-media .slash.two {
  bottom: 10px; right: 40px; width: 36%; height: 10px;
  background: var(--color-secondary);
  opacity: 0.85;
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
}
.about-media .frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  clip-path: polygon(0 4%, 100% 0, 100% 96%, 0 100%);
}
.about-media img { width: 100%; aspect-ratio: 4/5; object-fit: cover; }
.about-body h2 { font-size: clamp(1.9rem, 4.5vw, 3rem); font-style: italic; margin-bottom: 1.1rem; }
.about-body p { color: var(--color-text-muted); margin-bottom: 1rem; font-size: 1.05rem; }
.about-sign {
  margin-top: 1.5rem;
  font-family: var(--font-heading);
  font-style: italic;
  color: var(--color-text);
}
.about-sign span { display: block; color: var(--color-text-muted); font-size: 0.85rem; font-style: normal; }

/* ---------- Services ---------- */
.services { background: var(--color-surface); }
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: transform var(--duration-normal) var(--ease-out),
              border-color var(--duration-normal) var(--ease-out);
}
.card:hover { transform: translateY(-4px); border-color: var(--color-border-strong); }
.card .ico {
  display: grid;
  place-items: center;
  width: 52px; height: 52px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(15,163,166,0.16), rgba(123,77,186,0.16));
  border: 1px solid var(--color-border);
  margin-bottom: 1.1rem;
}
.card .ico [data-lucide] { width: 24px; height: 24px; color: var(--color-primary-light); }
.card:nth-child(even) .ico [data-lucide] { color: var(--color-secondary-light); }
.card h3 { font-size: 1.3rem; margin-bottom: 0.5rem; }
.card p { color: var(--color-text-muted); font-size: 0.97rem; }

/* ---------- Gallery ---------- */
.gallery-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.gallery-grid {
  margin-top: var(--space-lg);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 200px;
  gap: 1rem;
}
.gallery-grid figure {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}
.gallery-grid img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}
.gallery-grid figure:hover img { transform: scale(1.06); }
.gallery-grid .tall { grid-row: span 2; }
.gallery-grid .wide { grid-column: span 2; }

/* ---------- Why choose ---------- */
.why { background: var(--color-surface); }
.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem 2.5rem;
}
.why-item { display: flex; gap: 1rem; padding-block: 0.5rem; }
.why-item .ico {
  flex: none;
  display: grid; place-items: center;
  width: 44px; height: 44px;
  border-radius: var(--radius-full);
  background: rgba(15,163,166,0.12);
  border: 1px solid var(--color-border);
}
.why-item .ico [data-lucide] { width: 20px; height: 20px; color: var(--color-primary-light); }
.why-item h3 { font-size: 1.15rem; margin-bottom: 0.25rem; }
.why-item p { color: var(--color-text-muted); font-size: 0.95rem; }

/* ---------- Contact + form ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: start;
}
.contact-info h2 { font-size: clamp(1.9rem, 4.5vw, 3rem); font-style: italic; margin-bottom: 1rem; }
.contact-info > p { color: var(--color-text-muted); margin-bottom: 1.75rem; }
.contact-card {
  display: flex; align-items: center; gap: 1rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  margin-bottom: 0.85rem;
}
.contact-card .ico {
  flex: none; display: grid; place-items: center;
  width: 44px; height: 44px; border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(15,163,166,0.18), rgba(123,77,186,0.18));
}
.contact-card .ico [data-lucide] { width: 20px; height: 20px; color: var(--color-primary-light); }
.contact-card .label { font-size: 0.8rem; color: var(--color-text-muted); }
.contact-card .value { font-family: var(--font-heading); font-weight: 500; font-size: 1.05rem; }
.contact-card a.value:hover { color: var(--color-primary-light); }
.contact-note { margin-top: 1.25rem; font-size: 0.9rem; color: var(--color-text-muted); }

/* form */
.form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.25rem);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.field { display: flex; flex-direction: column; gap: 0.4rem; margin-bottom: 1rem; }
.field label { font-size: 0.85rem; font-weight: 500; color: var(--color-text); }
.field .req { color: var(--color-primary-light); }
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.8rem 0.95rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font: inherit;
  transition: border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}
.field input::placeholder,
.field textarea::placeholder { color: #6b6f7a; }
.field select { appearance: none; background-image: none; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(15, 163, 166, 0.22);
}
.field textarea { resize: vertical; min-height: 110px; }
.field.invalid input,
.field.invalid select,
.field.invalid textarea { border-color: var(--color-secondary-light); }
.field .err { font-size: 0.8rem; color: var(--color-secondary-light); display: none; }
.field.invalid .err { display: block; }
.form-actions { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; margin-top: 0.5rem; }
.form-success {
  display: none;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 2rem 1rem;
  gap: 0.75rem;
}
.form-success [data-lucide] { width: 46px; height: 46px; color: var(--color-primary-light); }
.form-success h3 { font-size: 1.5rem; font-style: italic; }
.form-success p { color: var(--color-text-muted); max-width: 22rem; }
.form.sent .form-body { display: none; }
.form.sent .form-success { display: flex; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-xl) var(--space-lg);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 2.5rem;
}
.footer-grid img { height: 46px; width: auto; margin-bottom: 1rem; }
.footer-grid p { color: var(--color-text-muted); font-size: 0.95rem; max-width: 24rem; }
.footer-col h4 {
  font-size: 0.8rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--color-text-muted); margin-bottom: 1rem; font-weight: 500;
}
.footer-col a, .footer-col li { color: var(--color-text-muted); font-size: 0.95rem; }
.footer-col ul { list-style: none; display: grid; gap: 0.6rem; }
.footer-col a:hover { color: var(--color-text); }

/* Contact column — aligned to the right edge, bold heading + names, italic area */
.footer-contact { text-align: right; }
.footer-contact h4 { font-weight: 700; color: var(--color-text); }
.footer-contact a, .footer-contact li { font-weight: 600; color: var(--color-text); }
.footer-contact .area { font-weight: 400; font-style: italic; color: var(--color-text-muted); }
.footer-bottom {
  margin-top: var(--space-lg);
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem;
  color: #717682; font-size: 0.85rem;
}

/* ---------- Reveal animation base ----------
   Visible by default (progressive enhancement). Hidden ONLY when the .anim
   class is present, which JS adds only when motion is enabled. If JS or GSAP
   fail to load, content stays visible. */
.anim .reveal { opacity: 0; transform: translateY(28px); }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-grid,
  .about-grid,
  .contact-grid { grid-template-columns: 1fr; }
  .hero-media { order: -1; max-width: 440px; margin-inline: auto; }
  .about-media { max-width: 420px; margin-inline: auto; }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* Collapse the nav to a hamburger before the links and buttons crowd. */
@media (max-width: 860px) {
  .nav-links, .nav-cta .btn-secondary { display: none; }
  .nav-toggle { display: inline-flex; }
}

@media (max-width: 720px) {
  /* tighter vertical rhythm on phones */
  :root { --space-2xl: 4.25rem; --space-xl: 3rem; }

  /* nav: compact bar, tap-to-call kept, links in the sheet */
  .nav { height: 64px; }
  .nav-logo img { height: 34px; }
  .nav-cta .btn-secondary { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-cta { gap: 0.5rem; }
  .nav-cta .btn-primary { padding: 0.62rem 1rem; font-size: 0.88rem; }
  .nav-sheet { top: 64px; }

  /* hero */
  .hero { padding-top: 88px; }
  .hero h1 { margin-top: 1rem; }
  .hero-sub { font-size: 1.05rem; }
  .hero-actions { flex-direction: column; align-items: stretch; width: 100%; }
  .hero-actions .btn { width: 100%; }
  .hero-meta { gap: 1rem 1.75rem; }

  /* stacked layouts */
  .service-grid,
  .why-grid,
  .form-row { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 160px; }
  .gallery-grid .wide { grid-column: span 2; }
  .form-actions { flex-direction: column; align-items: stretch; }
  .form-actions .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-contact { text-align: left; }
}

@media (max-width: 480px) {
  .nav-call-extra { display: none; }
  .hero h1 { font-size: clamp(2.3rem, 10.5vw, 2.9rem); }
  .section-head h2,
  .about-body h2,
  .contact-info h2 { font-size: 1.9rem; }
  .hero-chip { font-size: 0.78rem; }
  .gallery-grid { grid-auto-rows: 140px; gap: 0.75rem; }
  .card { padding: 1.4rem; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1 !important; transform: none !important; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}