/* ============================================================
   Art Ideas Renovation — Landing Page Styles
   Design language: Modern Premium · Soft Gradient · Minimal · Spacious
   Primary brand colour: #313B9F
   ============================================================ */

:root {
  --brand: #313B9F;
  --brand-dark: #262E7E;
  --brand-light: #4A55C4;
  --ink: #1E2338;
  --ink-soft: #4A5068;
  --ink-muted: #6B718A;
  --bg: #FFFFFF;
  --bg-soft: #F7F8FC;
  --bg-tint: #EEF1FA;
  --line: #E4E7F2;
  --mint: #DFF5EC;
  --peach: #FDEBE0;
  --lavender: #ECEAFB;
  --sky: #E3EEFB;
  --pink: #FBE9F1;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-sm: 0 2px 10px rgba(30, 35, 56, 0.06);
  --shadow-md: 0 8px 30px rgba(30, 35, 56, 0.10);
  --shadow-lg: 0 16px 50px rgba(30, 35, 56, 0.14);
  --maxw: 1240px;
  --font: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* ---------- Rainbow scroll background ----------
   A fixed, very soft pastel wash whose hue travels through the
   rainbow (red → orange → yellow → green → blue → purple) as the
   visitor scrolls. Lightness stays ≥96% so text contrast is never
   affected — readability first. */
.rainbow-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  --hue: 6;
  background:
    radial-gradient(1000px 600px at 85% 12%, hsla(calc(var(--hue) + 40), 78%, 94%, 0.75), transparent 62%),
    radial-gradient(900px 560px at 10% 85%, hsla(calc(var(--hue) - 30), 72%, 94%, 0.65), transparent 60%),
    linear-gradient(180deg, hsl(var(--hue), 82%, 96.5%) 0%, hsl(var(--hue), 55% , 98.5%) 100%);
}

@media (prefers-reduced-motion: reduce) {
  .rainbow-bg { --hue: 230 !important; }
}

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

a { color: var(--brand); text-decoration: none; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

section { padding: 96px 0; }

/* ---------- Typography ---------- */
h1, h2, h3, h4 { line-height: 1.22; font-weight: 700; color: var(--ink); }

.section-kicker {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand);
  background: var(--lavender);
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.section-title { font-size: clamp(1.75rem, 3.6vw, 2.6rem); margin-bottom: 16px; }

.section-sub {
  font-size: 1.08rem;
  color: var(--ink-soft);
  max-width: 720px;
  margin: 0 auto;
}

.center { text-align: center; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease, box-shadow .3s ease;
}

.site-header.scrolled { border-bottom-color: var(--line); box-shadow: var(--shadow-sm); }

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 16px;
}

.nav-logo img { height: 34px; width: auto; }

.nav-links { display: flex; align-items: center; gap: 28px; list-style: none; }

.nav-links a {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink-soft);
  transition: color .2s ease;
}

.nav-links a:hover, .nav-links a.active { color: var(--brand); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--brand);
  color: #fff !important;
  font-weight: 700;
  padding: 10px 20px;
  border-radius: 999px;
  box-shadow: 0 4px 14px rgba(49, 59, 159, 0.28);
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(49, 59, 159, 0.36); background: var(--brand-light); }

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
  color: var(--ink);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 700;
  padding: 15px 30px;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
}

.btn-primary {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 6px 18px rgba(49, 59, 159, 0.30);
}

.btn-primary:hover { transform: translateY(-2px); background: var(--brand-light); box-shadow: 0 10px 26px rgba(49, 59, 159, 0.38); }

.btn-whatsapp {
  background: #15803D;
  color: #fff;
  box-shadow: 0 6px 18px rgba(21, 128, 61, 0.30);
}

.btn-whatsapp:hover { transform: translateY(-2px); background: #116A32; box-shadow: 0 10px 26px rgba(21, 128, 61, 0.38); }

.btn-outline {
  background: #fff;
  color: var(--brand);
  border-color: var(--brand);
}

.btn-outline:hover { transform: translateY(-2px); background: var(--bg-tint); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 168px 0 96px;
  background: transparent;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.1rem, 4.4vw, 3.3rem);
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero h1 .grad {
  background: linear-gradient(100deg, var(--brand) 10%, #7A5FD0 55%, #3E9E7C 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead {
  font-size: 1.14rem;
  color: var(--ink-soft);
  margin-bottom: 30px;
  max-width: 540px;
}

.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 34px; }

.hero-trust { display: flex; flex-wrap: wrap; gap: 10px; }

.trust-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink-soft);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 16px;
  box-shadow: var(--shadow-sm);
}

.trust-chip svg { color: var(--brand); flex: none; }

.hero-media { position: relative; }

.hero-media .hero-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.hero-card {
  position: absolute;
  left: -20px;
  bottom: 28px;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 16px 22px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.hero-card .num { font-size: 1.6rem; font-weight: 800; color: var(--brand); line-height: 1; }

.hero-card .lbl { font-size: 0.85rem; color: var(--ink-muted); font-weight: 600; }

/* ---------- Stats strip ---------- */
.stats-strip { padding: 0; margin-top: -34px; position: relative; z-index: 5; }

/* ---------- About ---------- */
.about { background: transparent; }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-media { position: relative; }

.about-media img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  aspect-ratio: 4 / 3.4;
  object-fit: cover;
  width: 100%;
}

.about-badge {
  position: absolute;
  right: -14px;
  top: -18px;
  background: linear-gradient(120deg, var(--brand), #6C5CC9);
  color: #fff;
  border-radius: var(--radius-md);
  padding: 16px 22px;
  box-shadow: var(--shadow-md);
  text-align: center;
}

.about-badge .num { font-size: 1.7rem; font-weight: 800; line-height: 1.1; }

.about-badge .lbl { font-size: 0.8rem; font-weight: 600; opacity: 0.92; }

.about-text p { color: var(--ink-soft); margin-bottom: 16px; }

.about-points { list-style: none; margin-top: 22px; display: grid; gap: 12px; }

.about-points li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-weight: 600;
  color: var(--ink);
}

.about-points svg { color: var(--brand); flex: none; margin-top: 3px; }

/* ---------- Services ---------- */
.services { background: transparent; }

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 52px;
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 34px 30px;
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease;
}

.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }

.card-icon {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--brand);
}

.icon-sky { background: var(--sky); }
.icon-mint { background: var(--mint); }
.icon-lavender { background: var(--lavender); }
.icon-peach { background: var(--peach); }
.icon-pink { background: var(--pink); }
.icon-tint { background: var(--bg-tint); }

.card h3 { font-size: 1.16rem; margin-bottom: 10px; }

.card p { color: var(--ink-soft); font-size: 0.97rem; }

/* ---------- Why Us ---------- */
.why { background: transparent; }

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 52px;
}

.why-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 34px 30px 30px;
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease;
}

.why-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }

.why-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(130deg, var(--brand), #6C5CC9);
  color: #fff;
  font-weight: 800;
  margin-bottom: 18px;
}

.why-card h3 { font-size: 1.12rem; margin-bottom: 10px; }

.why-card p { color: var(--ink-soft); font-size: 0.96rem; }

.why-quote {
  margin-top: 14px;
  font-size: 0.92rem;
  font-style: italic;
  color: var(--brand);
  border-left: 3px solid var(--lavender);
  padding-left: 12px;
}

/* ---------- Materials ---------- */
.materials { background: transparent; }

.card-img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
}

.materials-intro { max-width: 780px; margin: 0 auto 52px; text-align: center; }

.mat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

/* ---------- Colour Energy ---------- */
.energy {
  position: relative;
  background:
    radial-gradient(720px 400px at 12% 20%, rgba(227, 238, 251, 0.55), transparent 60%),
    radial-gradient(720px 420px at 88% 30%, rgba(251, 233, 241, 0.5), transparent 60%),
    radial-gradient(800px 460px at 50% 100%, rgba(223, 245, 236, 0.5), transparent 62%);
  overflow: hidden;
}

.energy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.energy-ribbon {
  height: 6px;
  width: 120px;
  border-radius: 999px;
  background: linear-gradient(90deg, #7FB3E8, #9D8FE0, #E8A9C8, #F3C6A5, #8FD4B5);
  margin-bottom: 22px;
}

.energy-text p { color: var(--ink-soft); margin-bottom: 16px; }

.energy-benefits { list-style: none; display: grid; gap: 14px; margin-top: 24px; }

.energy-benefits li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  box-shadow: var(--shadow-sm);
  font-weight: 600;
}

.energy-benefits .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex: none;
  margin-top: 7px;
}

.energy-media img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.energy-media figcaption { font-size: 0.85rem; color: var(--ink-muted); margin-top: 12px; text-align: center; }

/* ---------- Projects ---------- */
.projects { background: transparent; }

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 44px 0 36px;
}

.filter-btn {
  font-family: var(--font);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--ink-soft);
  background: #fff;
  border: 1.5px solid var(--line);
  border-radius: 999px;
  padding: 10px 22px;
  cursor: pointer;
  transition: all .2s ease;
}

.filter-btn:hover { border-color: var(--brand); color: var(--brand); }

.filter-btn.active { background: var(--brand); border-color: var(--brand); color: #fff; box-shadow: 0 4px 14px rgba(49, 59, 159, 0.25); }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.project-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease;
}

.project-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }

.project-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform .5s ease;
}

.project-card:hover img { transform: scale(1.04); }

.project-info { padding: 20px 22px 22px; }

.project-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--brand);
  background: var(--lavender);
  border-radius: 999px;
  padding: 4px 12px;
  margin-bottom: 10px;
}

.project-info h3 { font-size: 1.08rem; margin-bottom: 6px; }

.project-info p { font-size: 0.92rem; color: var(--ink-soft); }

.project-count {
  position: absolute;
  top: 14px;
  right: 14px;
  background: rgba(30, 35, 56, 0.65);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: 999px;
  padding: 5px 12px;
  backdrop-filter: blur(4px);
}

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(20, 23, 38, 0.94);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.lightbox.open { display: flex; }

.lb-img-wrap { max-width: min(1100px, 92vw); width: 100%; text-align: center; }

.lightbox img {
  max-width: 100%;
  max-height: 70vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  margin: 0 auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.lb-caption { color: #fff; margin-top: 18px; text-align: center; max-width: 720px; }

.lb-caption h3 { color: #fff; font-size: 1.15rem; margin-bottom: 6px; }

.lb-caption p { color: rgba(255,255,255,0.75); font-size: 0.92rem; }

.lb-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.25);
  color: #fff;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .2s ease;
}

.lb-btn:hover { background: rgba(255,255,255,0.25); }

.lb-prev { left: 22px; }
.lb-next { right: 22px; }

.lb-close {
  position: absolute;
  top: 20px;
  right: 22px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.25);
  color: #fff;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lb-close:hover { background: rgba(255,255,255,0.25); }

.lb-counter { position: absolute; top: 30px; left: 30px; color: rgba(255,255,255,0.8); font-weight: 600; font-size: 0.9rem; }

/* ---------- Process ---------- */
.process { background: transparent; }

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 52px;
  counter-reset: step;
}

.step {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: transform .25s ease, box-shadow .25s ease;
}

.step:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--brand);
  background: var(--lavender);
  margin-bottom: 18px;
}

.step h3 { font-size: 1.1rem; margin-bottom: 8px; }

.step p { color: var(--ink-soft); font-size: 0.95rem; }

/* ---------- FAQ ---------- */
.faq { background: transparent; }

.faq-list { max-width: 820px; margin: 52px auto 0; display: grid; gap: 14px; }

.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-family: var(--font);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--ink);
  text-align: left;
  background: none;
  border: 0;
  padding: 20px 24px;
  cursor: pointer;
}

.faq-q svg { flex: none; color: var(--brand); transition: transform .3s ease; }

.faq-item.open .faq-q svg { transform: rotate(180deg); }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}

.faq-a-inner { padding: 0 24px 22px; color: var(--ink-soft); font-size: 0.97rem; }

/* ---------- Contact ---------- */
.contact {
  background:
    radial-gradient(800px 460px at 10% 10%, rgba(236, 234, 251, 0.6), transparent 62%),
    radial-gradient(760px 420px at 90% 90%, rgba(223, 245, 236, 0.55), transparent 60%);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 48px;
  margin-top: 52px;
  align-items: start;
}

.contact-info { display: grid; gap: 18px; }

.contact-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  box-shadow: var(--shadow-sm);
}

.contact-card .card-icon { width: 46px; height: 46px; margin: 0; flex: none; }

.contact-card h3 { font-size: 1rem; margin-bottom: 4px; }

.contact-card p, .contact-card a { font-size: 0.97rem; color: var(--ink-soft); }

.contact-card a { color: var(--brand); font-weight: 700; }

.contact-form {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-md);
}

.contact-form h3 { font-size: 1.3rem; margin-bottom: 6px; }

.contact-form > p { color: var(--ink-soft); font-size: 0.95rem; margin-bottom: 24px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.form-group { margin-bottom: 16px; }

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--ink);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  font-family: var(--font);
  font-size: 0.97rem;
  color: var(--ink);
  background: var(--bg-soft);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(49, 59, 159, 0.12);
  background: #fff;
}

.form-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 22px; }

.form-note { font-size: 0.85rem; color: var(--ink-muted); margin-top: 14px; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink);
  color: rgba(255,255,255,0.75);
  padding: 56px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.site-footer h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }

.site-footer p, .site-footer a { color: rgba(255,255,255,0.72); font-size: 0.94rem; }

.site-footer a:hover { color: #fff; }

.footer-links { list-style: none; display: grid; gap: 10px; }

.footer-logo { height: 30px; width: auto; margin-bottom: 16px; filter: brightness(0) invert(1); opacity: 0.95; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
}

/* ---------- Floating WhatsApp ---------- */
.wa-float {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 1500;
  display: flex;
  align-items: center;
  gap: 10px;
  background: #15803D;
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 14px 22px;
  border-radius: 999px;
  box-shadow: 0 10px 30px rgba(21, 128, 61, 0.4);
  transition: transform .2s ease, box-shadow .2s ease;
}

.wa-float:hover { transform: translateY(-3px) scale(1.03); box-shadow: 0 14px 36px rgba(21, 128, 61, 0.5); }

/* ---------- Mobile CTA bar ---------- */
.mobile-cta-bar {
  display: none;
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 1400;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--line);
  padding: 10px 14px calc(10px + env(safe-area-inset-bottom));
  gap: 10px;
}

.mobile-cta-bar .btn { flex: 1; padding: 13px 10px; font-size: 0.95rem; }

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s ease, transform .7s ease;
}

.reveal.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation: none !important; transition: none !important; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .cards-grid, .why-grid, .mat-grid, .steps, .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-grid, .about-grid, .energy-grid, .contact-grid { grid-template-columns: 1fr; }
  .hero-media { order: -1; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  section { padding: 68px 0; }
  .hero { padding: 128px 0 68px; }
  .cards-grid, .why-grid, .mat-grid, .steps, .projects-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    padding: 12px 0;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: 13px 26px; width: 100%; }
  .nav-links .nav-cta { margin: 10px 26px 6px; display: inline-flex; width: auto; }
  .nav-toggle { display: block; }
  .wa-float { bottom: 78px; right: 16px; padding: 13px 18px; }
  .wa-float span { display: none; }
  .mobile-cta-bar { display: flex; }
  .hero-card { left: 10px; bottom: 14px; padding: 12px 16px; }
  .contact-form { padding: 26px 20px; }
}