/* ==========================================================================
   ADITRI Smart Homes — brand stylesheet
   Extends the original branding kit. Brand token values are unchanged.
   ========================================================================== */

:root {
  --aditri-emerald: #006B3C;      /* Primary — headings, links, footer */
  --aditri-emerald-dark: #004C2B; /* Dark sections, hover states */
  --aditri-gold: #C8A54B;         /* Buttons, rules, borders, restrained highlights */
  --aditri-gold-light: #E2CF96;
  --aditri-pearl: #F7F5EF;        /* Main page background */
  --aditri-white: #FFFFFF;        /* Cards, reversed text */
  --aditri-slate: #444444;        /* Body text */
  --aditri-muted: #717171;
  --aditri-serif: Georgia, "Cormorant Garamond", "Times New Roman", serif;
  --aditri-sans: Inter, Montserrat, Arial, sans-serif;
  --aditri-radius: 10px;
  --aditri-shadow: 0 16px 40px rgba(0, 76, 43, .12);
  --aditri-container: 1200px;

  /* Layout helpers (derived, not brand tokens) */
  --aditri-pad: 40px;             /* desktop side padding */
  --aditri-section: 92px;         /* desktop section spacing */
  --aditri-overlay: linear-gradient(90deg, rgba(0,76,43,.94), rgba(0,107,60,.72));
}

/* --------------------------------------------------------------------------
   Base
   -------------------------------------------------------------------------- */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 100px; }

body {
  margin: 0;
  color: var(--aditri-slate);
  background: var(--aditri-pearl);
  font-family: var(--aditri-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

.container {
  width: 100%;
  max-width: var(--aditri-container);
  margin-inline: auto;
  padding-inline: var(--aditri-pad);
}

h1, h2, h3, h4 {
  color: var(--aditri-emerald);
  font-family: var(--aditri-serif);
  font-weight: 600;
  line-height: 1.15;
}
h1 { font-size: clamp(2.4rem, 6vw, 4.6rem); }
h2 { font-size: clamp(1.9rem, 4vw, 3.1rem); }
h3 { font-size: 1.4rem; }

p { margin: 0 0 1rem; }
a { color: var(--aditri-emerald); }

/* Accessibility: visible focus + reduced motion */
:focus-visible {
  outline: 3px solid var(--aditri-gold);
  outline-offset: 3px;
  border-radius: 3px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 100;
  padding: 12px 18px;
  background: var(--aditri-gold);
  color: var(--aditri-emerald-dark);
  font-weight: 800;
  border-radius: var(--aditri-radius);
  text-decoration: none;
  transition: top .2s ease;
}
.skip-link:focus { top: 16px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}

/* --------------------------------------------------------------------------
   Shared bits
   -------------------------------------------------------------------------- */
.eyebrow {
  color: var(--aditri-gold);
  font-size: .8rem;
  font-weight: 800;
  letter-spacing: .22em;
  text-transform: uppercase;
  margin: 0 0 12px;
}

.gold-rule {
  width: 92px;
  height: 3px;
  margin: 20px 0 26px;
  background: var(--aditri-gold);
  border: 0;
}

.btn {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 26px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-family: var(--aditri-sans);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: .04em;
  text-decoration: none;
  cursor: pointer;
  transition: transform .2s ease, background .2s ease, color .2s ease;
}
.btn-primary { color: var(--aditri-emerald-dark); background: var(--aditri-gold); }
.btn-primary:hover { background: var(--aditri-gold-light); transform: translateY(-2px); }
.btn-outline { color: var(--aditri-white); border-color: var(--aditri-gold); background: transparent; }
.btn-outline:hover { background: rgba(200,165,75,.16); transform: translateY(-2px); }
.btn-emerald { color: var(--aditri-white); background: var(--aditri-emerald); }
.btn-emerald:hover { background: var(--aditri-emerald-dark); transform: translateY(-2px); }
.btn-full { width: 100%; }

/* --------------------------------------------------------------------------
   Header / navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(247,245,239,.90);
  border-bottom: 1px solid var(--aditri-gold-light);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.nav {
  min-height: 86px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.brand-logo { width: 235px; max-width: 52vw; height: auto; }

.nav-right { display: flex; align-items: center; gap: 32px; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.nav-links a { text-decoration: none; color: var(--aditri-slate); padding: 8px 0; }
.nav-links a:hover { color: var(--aditri-emerald); }
.nav-cta { font-size: .78rem; padding: 12px 20px; }

.nav-toggle {
  display: none;
  width: 48px;
  height: 48px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--aditri-gold-light);
  border-radius: 8px;
  cursor: pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  display: block;
  width: 22px;
  height: 2px;
  background: var(--aditri-emerald);
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle span { position: relative; }
.nav-toggle span::before { position: absolute; top: -7px; }
.nav-toggle span::after { position: absolute; top: 7px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { transform: translateY(-7px) rotate(-45deg); }

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 660px;
  display: grid;
  align-items: center;
  color: var(--aditri-white);
  /* TODO: replace with real photo. Placeholder = Unsplash premium architecture. */
  background: var(--aditri-overlay),
    url("https://images.unsplash.com/photo-1600585154340-be6161a56a0c?auto=format&fit=crop&w=1920&q=80")
    center / cover no-repeat;
}
.hero-content { max-width: 760px; padding-block: 110px; }
.hero h1 { color: var(--aditri-white); margin: 14px 0 20px; }
.hero-sub { max-width: 620px; font-size: 1.15rem; color: rgba(255,255,255,.9); }
.actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

/* --------------------------------------------------------------------------
   Sections
   -------------------------------------------------------------------------- */
.section { padding-block: var(--aditri-section); }
.section-white { background: var(--aditri-white); }
.section-pearl { background: var(--aditri-pearl); }
.section-heading { max-width: 740px; margin-bottom: 46px; }
.section-heading p { color: var(--aditri-muted); font-size: 1.08rem; }

/* Services cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card {
  padding: 34px 30px;
  background: var(--aditri-white);
  border: 1px solid var(--aditri-gold-light);
  border-radius: var(--aditri-radius);
  box-shadow: var(--aditri-shadow);
  transition: transform .2s ease, box-shadow .2s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 22px 50px rgba(0,76,43,.16); }
.card-icon { width: 46px; height: 46px; margin-bottom: 16px; }
.card h3 { margin: 0 0 10px; }
.card p { margin: 0; color: var(--aditri-slate); }

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-media img {
  width: 100%;
  height: 100%;
  min-height: 420px;
  object-fit: cover;
  border-radius: var(--aditri-radius);
  border: 1px solid var(--aditri-gold-light);
  box-shadow: var(--aditri-shadow);
}
.about-copy p { color: var(--aditri-slate); font-size: 1.02rem; }
.signature {
  margin: 22px 0 0;
  font-family: var(--aditri-serif);
  font-size: 1.25rem;
  font-style: italic;
  color: var(--aditri-emerald);
}
.proof-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin-top: 30px;
  padding: 0;
  list-style: none;
}
.proof-row li {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  background: var(--aditri-pearl);
  border: 1px solid var(--aditri-gold-light);
  border-radius: 999px;
  font-size: .9rem;
  font-weight: 600;
  color: var(--aditri-emerald-dark);
}

/* --------------------------------------------------------------------------
   Contact band
   -------------------------------------------------------------------------- */
.contact-band {
  color: var(--aditri-white);
  background: var(--aditri-emerald);
  border-top: 4px solid var(--aditri-gold);
  padding-block: var(--aditri-section);
}
.contact-band h2 { color: var(--aditri-white); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.contact-intro p { color: rgba(255,255,255,.86); font-size: 1.08rem; max-width: 460px; }

.contact-methods { list-style: none; margin: 30px 0 0; padding: 0; display: grid; gap: 14px; }
.contact-methods a {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--aditri-white);
  text-decoration: none;
  font-weight: 600;
}
.contact-methods a:hover { color: var(--aditri-gold-light); }
.contact-methods .ic { width: 22px; text-align: center; color: var(--aditri-gold); font-style: normal; }

/* Form */
.enquiry-form {
  background: var(--aditri-white);
  color: var(--aditri-slate);
  padding: 32px;
  border-radius: var(--aditri-radius);
  border: 1px solid var(--aditri-gold);
  box-shadow: var(--aditri-shadow);
}
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 700; font-size: .9rem; margin-bottom: 6px; color: var(--aditri-emerald-dark); }
.field .req { color: var(--aditri-gold); }
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  font: inherit;
  color: var(--aditri-slate);
  background: var(--aditri-pearl);
  border: 1px solid var(--aditri-gold-light);
  border-radius: 8px;
  min-height: 48px;
}
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus,
.field select:focus,
.field textarea:focus { border-color: var(--aditri-gold); background: var(--aditri-white); }
.field .error-msg { display: none; margin-top: 6px; font-size: .82rem; color: #a4442b; }
.field.invalid input,
.field.invalid select,
.field.invalid textarea { border-color: #a4442b; }
.field.invalid .error-msg { display: block; }

.form-note { margin: 4px 0 0; font-size: .82rem; color: var(--aditri-muted); }
.form-status { margin-top: 14px; font-weight: 700; }
.form-status.ok { color: var(--aditri-emerald); }
.form-status.err { color: #a4442b; }

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  padding: 60px 0 28px;
  color: rgba(255,255,255,.82);
  background: var(--aditri-emerald-dark);
}
.footer a { color: rgba(255,255,255,.82); text-decoration: none; }
.footer a:hover { color: var(--aditri-gold-light); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 42px;
}
.footer-logo { width: 220px; margin-bottom: 18px; }
.footer h3 {
  color: var(--aditri-gold);
  font-family: var(--aditri-sans);
  font-size: .8rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin: 0 0 14px;
}
.footer-nav { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.footer address { font-style: normal; line-height: 1.7; }
.footer-legal {
  margin-top: 42px;
  padding-top: 22px;
  border-top: 1px solid rgba(255,255,255,.14);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
  font-size: .82rem;
  color: rgba(255,255,255,.6);
}

/* --------------------------------------------------------------------------
   Floating WhatsApp
   -------------------------------------------------------------------------- */
.wa-float {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 30;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  box-shadow: 0 10px 26px rgba(0,76,43,.35);
  transition: transform .2s ease;
}
.wa-float:hover { transform: scale(1.06); }
.wa-float img { width: 100%; height: 100%; border-radius: 50%; }

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 34px; }
  .about-media { order: -1; }
  .about-media img { min-height: 300px; }
  .contact-grid { grid-template-columns: 1fr; gap: 34px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 34px; }
}

@media (max-width: 768px) {
  :root { --aditri-pad: 20px; --aditri-section: 64px; }

  .nav-toggle { display: inline-flex; }
  .nav-right {
    position: absolute;
    left: 0;
    right: 0;
    top: 86px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 20px 20px;
    background: var(--aditri-pearl);
    border-bottom: 1px solid var(--aditri-gold-light);
    box-shadow: var(--aditri-shadow);
    display: none;
  }
  .nav-right.open { display: flex; }
  .nav-links { flex-direction: column; align-items: stretch; gap: 0; width: 100%; }
  .nav-links li { border-bottom: 1px solid var(--aditri-gold-light); }
  .nav-links a { display: block; padding: 14px 0; }
  .nav-cta { margin-top: 16px; text-align: center; }

  .cards { grid-template-columns: 1fr; }
  .hero { min-height: 560px; }
  .hero-content { padding-block: 72px; }
}

@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; }
  .actions .btn { width: 100%; }
}