/* ============================================================
   CORNERSTONE BUILDS — Premium Construction Website
   Design: Industrial Refined — Black, Bone White, Amber Accent
   ============================================================ */

/* ── CSS VARIABLES ─────────────────────────────────────────── */
:root {
  --black:       #0a0a0a;
  --dark:        #141414;
  --dark-2:      #1e1e1e;
  --dark-3:      #2a2a2a;
  --mid:         #4a4a4a;
  --muted:       #888888;
  --light:       #c8c8c8;
  --bone:        #f4f1eb;
  --white:       #fafafa;
  --accent:      #c9871f;
  --accent-lt:   #e8a832;
  --accent-dark: #a06a10;

  --font-display: 'Bebas Neue', sans-serif;
  --font-serif:   'DM Serif Display', serif;
  --font-body:    'DM Sans', sans-serif;

  --max-w:    1240px;
  --radius:   4px;
  --radius-lg: 12px;
  --shadow:   0 4px 30px rgba(0,0,0,0.15);
  --shadow-lg: 0 12px 60px rgba(0,0,0,0.25);

  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── RESET & BASE ───────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--white);
  color: var(--dark);
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* ── TYPOGRAPHY ─────────────────────────────────────────────── */
h1, h2, h3, h4 { line-height: 1.15; font-weight: 500; }
h1 { font-family: var(--font-serif); font-size: clamp(2.8rem, 7vw, 5.5rem); }
h2 { font-family: var(--font-serif); font-size: clamp(2rem, 4.5vw, 3.5rem); }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.4rem); font-weight: 600; }
p  { color: var(--mid); }
em { font-style: italic; }

/* ── UTILITIES ──────────────────────────────────────────────── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.section-pad { padding: 100px 0; }
.text-center { text-align: center; }
.mt-3 { margin-top: 2rem; }

.section-header { text-align: center; max-width: 720px; margin: 0 auto 64px; }
.section-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-title { color: var(--dark); margin-bottom: 20px; }
.section-sub { color: var(--mid); font-size: 1.05rem; line-height: 1.75; }

/* ── BUTTONS ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-lg { padding: 18px 36px; font-size: 1.05rem; }
.btn-sm { padding: 10px 20px; font-size: 0.875rem; }
.btn-full { width: 100%; }

.btn-primary {
  background: var(--accent);
  color: var(--white);
  border: 2px solid var(--accent);
}
.btn-primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(201,135,31,0.4); }

.btn-ghost {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.5);
}
.btn-ghost:hover { border-color: var(--white); background: rgba(255,255,255,0.08); transform: translateY(-2px); }

.btn-ghost-white {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.5);
}

.btn-outline {
  background: transparent;
  color: var(--dark);
  border: 2px solid var(--dark);
}
.btn-outline:hover { background: var(--dark); color: var(--white); transform: translateY(-2px); }

.btn-accent { background: var(--accent); color: var(--white); border: 2px solid var(--accent); }
.btn-accent:hover { background: var(--accent-dark); transform: translateY(-2px); }

.btn-dark { background: var(--dark); color: var(--white); border: 2px solid var(--dark); }
.btn-dark:hover { background: var(--black); transform: translateY(-2px); }

/* ── REVEAL ANIMATIONS ──────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.3s; }
.delay-3 { transition-delay: 0.45s; }
.delay-4 { transition-delay: 0.6s; }

/* ── HEADER / NAV ───────────────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: background var(--transition), padding var(--transition), box-shadow var(--transition);
}
.site-header.scrolled {
  background: rgba(10,10,10,0.97);
  backdrop-filter: blur(12px);
  padding: 12px 0;
  box-shadow: 0 2px 30px rgba(0,0,0,0.4);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 32px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-mark {
  width: 36px;
  height: 36px;
  background: var(--accent);
  color: var(--white);
  font-family: var(--font-display);
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0;
}
.logo-text {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: 0.06em;
  color: var(--white);
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.logo-text em { font-style: normal; color: var(--accent); font-size: 0.72em; letter-spacing: 0.12em; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}
.nav-link {
  color: rgba(255,255,255,0.8);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius);
  transition: color var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--white); }

.nav-dropdown { position: relative; }
.dropdown-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  background: var(--dark-2);
  border: 1px solid var(--dark-3);
  border-radius: var(--radius-lg);
  min-width: 240px;
  padding: 12px;
  opacity: 0;
  pointer-events: none;
  transition: all 0.25s ease;
  box-shadow: var(--shadow-lg);
}
.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.dropdown-menu a {
  display: block;
  color: var(--light);
  padding: 10px 16px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  transition: var(--transition);
}
.dropdown-menu a:hover { background: var(--dark-3); color: var(--accent); padding-left: 22px; }

.nav-cta { margin-left: 8px; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--white);
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* ── HERO ───────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transform: scale(1.06);
  animation: heroZoom 18s ease-in-out infinite alternate;
}
@keyframes heroZoom { to { transform: scale(1.0); } }
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    rgba(10,10,10,0.88) 0%,
    rgba(10,10,10,0.65) 60%,
    rgba(10,10,10,0.3) 100%
  );
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 780px;
  padding-top: 100px;
  padding-bottom: 80px;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(201,135,31,0.2);
  border: 1px solid rgba(201,135,31,0.4);
  color: var(--accent-lt);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 28px;
}
.hero-headline {
  color: var(--white);
  margin-bottom: 24px;
  letter-spacing: -0.01em;
}
.hero-headline em { color: var(--accent-lt); }
.hero-sub {
  color: rgba(255,255,255,0.75);
  font-size: clamp(1rem, 2.5vw, 1.15rem);
  line-height: 1.75;
  max-width: 600px;
  margin-bottom: 40px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 60px;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.stat { text-align: center; }
.stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  letter-spacing: 0.05em;
  color: var(--white);
  line-height: 1;
}
.stat span {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.55);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 4px;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.2);
}
.hero-scroll-hint {
  position: absolute;
  bottom: 40px;
  right: 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 2;
}
.hero-scroll-hint span {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  writing-mode: vertical-rl;
}
.scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, rgba(201,135,31,0.8), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse { 0%,100% { opacity: 0.4; } 50% { opacity: 1; } }

/* ── TRUST BAR ──────────────────────────────────────────────── */
.trust-bar {
  background: var(--dark);
  padding: 40px 0;
  border-top: 1px solid var(--dark-3);
  border-bottom: 1px solid var(--dark-3);
}
.trust-bar-label {
  text-align: center;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted);
  margin-bottom: 28px;
}
.trust-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}
.trust-logo {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.3);
  text-align: center;
  transition: color var(--transition);
  cursor: default;
}
.trust-logo small { display: block; font-size: 0.65rem; letter-spacing: 0.06em; margin-top: 2px; }
.trust-logo:hover { color: rgba(255,255,255,0.6); }

/* ── WHY US ─────────────────────────────────────────────────── */
.why-us { background: var(--bone); }
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.why-card {
  background: var(--white);
  padding: 36px 32px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(0,0,0,0.06);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.why-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px;
  height: 0;
  background: var(--accent);
  transition: height var(--transition);
}
.why-card:hover::before { height: 100%; }
.why-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.why-icon { font-size: 2rem; margin-bottom: 20px; }
.why-card h3 { color: var(--dark); margin-bottom: 12px; font-size: 1.1rem; }
.why-card p { font-size: 0.95rem; line-height: 1.7; }
.why-proof {
  margin-top: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ── CTA STRIP ──────────────────────────────────────────────── */
.cta-strip { padding: 80px 0; }
.cta-strip--dark { background: var(--dark); }
.cta-strip--accent { background: var(--accent); }
.cta-strip-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}
.cta-strip h3 {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: var(--white);
  margin-bottom: 8px;
}
.cta-strip p { color: rgba(255,255,255,0.7); font-size: 1rem; }
.cta-strip--accent h3, .cta-strip--accent p { color: var(--dark); }
.cta-strip--accent p { color: rgba(0,0,0,0.6); }

/* ── SERVICES ───────────────────────────────────────────────── */
.services { background: var(--white); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.service-card {
  display: block;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.08);
  transition: var(--transition);
}
.service-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.service-img-wrap {
  position: relative;
  height: 240px;
  overflow: hidden;
}
.service-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.service-card:hover .service-img-wrap img { transform: scale(1.06); }
.service-tag-overlay {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--accent);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 999px;
}
.service-body {
  padding: 28px 32px;
  background: var(--white);
}
.service-body h3 { color: var(--dark); margin-bottom: 12px; }
.service-body p { font-size: 0.95rem; line-height: 1.7; margin-bottom: 20px; }
.service-link {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: gap var(--transition);
}
.service-card:hover .service-link { letter-spacing: 0.18em; }

/* ── PROJECTS ───────────────────────────────────────────────── */
.projects { background: var(--dark); }
.projects .section-tag { color: var(--accent-lt); }
.projects .section-title { color: var(--white); }

.project-filters {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.filter-btn {
  padding: 10px 24px;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 600;
  color: rgba(255,255,255,0.6);
  border: 1.5px solid rgba(255,255,255,0.15);
  transition: var(--transition);
  letter-spacing: 0.04em;
}
.filter-btn:hover, .filter-btn.active {
  color: var(--white);
  border-color: var(--accent);
  background: rgba(201,135,31,0.15);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.project-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  cursor: pointer;
  transition: var(--transition);
}
.project-card:hover { transform: translateY(-6px); box-shadow: 0 20px 60px rgba(0,0,0,0.5); }
.project-img-wrap {
  position: relative;
  height: 280px;
  overflow: hidden;
}
.project-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.project-card:hover .project-img-wrap img { transform: scale(1.08); }
.project-overlay {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 24px;
  background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, transparent 100%);
  transform: translateY(8px);
  transition: transform var(--transition);
}
.project-card:hover .project-overlay { transform: translateY(0); }
.project-type {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-lt);
  margin-bottom: 6px;
}
.project-overlay h4 { color: var(--white); font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.project-overlay p { color: rgba(255,255,255,0.65); font-size: 0.85rem; margin-bottom: 8px; }
.project-meta {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.04em;
}
.project-card.hidden { display: none; }

/* ── PROCESS ────────────────────────────────────────────────── */
.process { background: var(--bone); }
.process-steps { display: flex; flex-direction: column; gap: 0; }
.process-step {
  display: grid;
  grid-template-columns: 80px 1fr 120px;
  gap: 40px;
  align-items: center;
  padding: 48px 0;
  border-bottom: 1px solid rgba(0,0,0,0.08);
  position: relative;
}
.process-step:last-child { border-bottom: none; }
.process-step--alt { grid-template-columns: 120px 1fr 80px; }
.process-step--alt .step-visual { order: -1; }
.process-step--alt .step-number { order: 3; text-align: right; }

.step-number {
  font-family: var(--font-display);
  font-size: 5rem;
  color: rgba(0,0,0,0.08);
  letter-spacing: -0.02em;
  line-height: 1;
  user-select: none;
}
.step-content h3 { color: var(--dark); font-size: 1.3rem; margin-bottom: 14px; }
.step-content p { font-size: 0.98rem; line-height: 1.75; margin-bottom: 20px; }
.step-list { display: flex; flex-direction: column; gap: 8px; }
.step-list li {
  font-size: 0.88rem;
  color: var(--mid);
  display: flex;
  align-items: center;
  gap: 8px;
}
.step-list li::before {
  content: '→';
  color: var(--accent);
  font-weight: 700;
}
.step-visual {
  font-size: 3.5rem;
  text-align: center;
  opacity: 0.6;
}

/* ── TESTIMONIALS ───────────────────────────────────────────── */
.testimonials { background: var(--white); }
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonials-grid .testimonial-card:last-child {
  grid-column: 1 / -1;
  max-width: 500px;
  margin: 0 auto;
}
.testimonials-grid .testimonial-card:nth-child(4) { grid-column: auto; max-width: unset; margin: 0; }
.testimonial-card {
  background: var(--bone);
  padding: 36px 32px;
  border-radius: var(--radius-lg);
  position: relative;
  transition: var(--transition);
}
.testimonial-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.testimonial-card::before {
  content: '"';
  font-family: var(--font-serif);
  font-size: 5rem;
  color: var(--accent);
  opacity: 0.25;
  position: absolute;
  top: 16px;
  right: 28px;
  line-height: 1;
}
.stars { color: var(--accent); font-size: 0.9rem; letter-spacing: 2px; margin-bottom: 16px; }
.testimonial-card > p {
  font-size: 0.97rem;
  line-height: 1.75;
  color: var(--dark);
  margin-bottom: 24px;
  font-style: italic;
}
.testimonial-author { display: flex; align-items: center; gap: 14px; }
.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--white);
  font-weight: 700;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.testimonial-author strong { display: block; font-size: 0.9rem; color: var(--dark); }
.testimonial-author span { font-size: 0.8rem; color: var(--muted); }

/* ── CERTIFICATIONS ─────────────────────────────────────────── */
.certs { background: var(--dark); }
.certs .section-tag { color: var(--accent-lt); }
.certs .section-title { color: var(--white); }
.certs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.cert-item {
  background: var(--dark-2);
  border: 1px solid var(--dark-3);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: center;
  transition: var(--transition);
}
.cert-item:hover { border-color: var(--accent); transform: translateY(-4px); }
.cert-icon { font-size: 2.4rem; margin-bottom: 16px; }
.cert-item h4 { color: var(--white); font-size: 0.95rem; font-weight: 700; letter-spacing: 0.04em; margin-bottom: 10px; }
.cert-item p { font-size: 0.85rem; color: var(--muted); line-height: 1.6; }

/* ── CONTACT ────────────────────────────────────────────────── */
.contact { background: var(--bone); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: start;
}
.contact-left .section-tag { display: block; margin-bottom: 16px; }
.contact-left .section-title { margin-bottom: 20px; }
.contact-left > p { font-size: 1rem; margin-bottom: 40px; }
.contact-details { display: flex; flex-direction: column; gap: 20px; margin-bottom: 32px; }
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.contact-ico { font-size: 1.4rem; flex-shrink: 0; margin-top: 2px; }
.contact-item strong { display: block; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); margin-bottom: 4px; }
.contact-item a, .contact-item span { font-size: 1rem; color: var(--dark); font-weight: 500; }
.contact-item a:hover { color: var(--accent); }
.urgency-box {
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(201,135,31,0.1);
  border: 1px solid rgba(201,135,31,0.3);
  border-radius: var(--radius);
  padding: 16px 20px;
}
.urgency-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
  animation: urgencyPulse 2s ease-in-out infinite;
}
@keyframes urgencyPulse { 0%,100%{ box-shadow: 0 0 0 0 rgba(201,135,31,0.6); } 50%{ box-shadow: 0 0 0 8px rgba(201,135,31,0); } }
.urgency-box p { font-size: 0.9rem; color: var(--dark); margin: 0; }

/* ── LEAD FORM ──────────────────────────────────────────────── */
.lead-form, .contact-right {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 48px 44px;
  box-shadow: var(--shadow-lg);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}
.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--dark);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.form-group input,
.form-group select,
.form-group textarea {
  padding: 14px 18px;
  border: 1.5px solid rgba(0,0,0,0.12);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.97rem;
  color: var(--dark);
  background: var(--white);
  transition: border-color var(--transition);
  outline: none;
  -webkit-appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(201,135,31,0.12);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-note { text-align: center; font-size: 0.8rem; color: var(--muted); margin-top: 16px; }

.form-success {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 60px 44px;
  text-align: center;
  box-shadow: var(--shadow-lg);
}
.success-icon { font-size: 3rem; margin-bottom: 20px; }
.form-success h3 { font-size: 1.5rem; color: var(--dark); margin-bottom: 12px; }
.form-success p { color: var(--mid); font-size: 1rem; }

/* ── FOOTER ─────────────────────────────────────────────────── */
.site-footer { background: var(--black); padding: 80px 0 0; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 60px;
  padding-bottom: 60px;
  border-bottom: 1px solid var(--dark-3);
}
.footer-brand p { color: var(--muted); font-size: 0.9rem; margin-top: 20px; line-height: 1.7; max-width: 280px; }
.footer-socials { display: flex; gap: 12px; margin-top: 28px; }
.footer-socials a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--dark-2);
  border: 1px solid var(--dark-3);
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.footer-socials a:hover { background: var(--accent); border-color: var(--accent); color: var(--white); }
.footer-col h4 {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--white);
  margin-bottom: 20px;
}
.footer-col a {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 10px;
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--accent); }
.footer-col p { color: var(--muted); font-size: 0.875rem; line-height: 1.75; }

.footer-bottom {
  padding: 24px 0;
}
.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-bottom-inner p { color: var(--muted); font-size: 0.85rem; }
.footer-bottom-links { display: flex; gap: 24px; }
.footer-bottom-links a { font-size: 0.85rem; color: var(--muted); }
.footer-bottom-links a:hover { color: var(--accent); }

/* ── WHATSAPP BTN ───────────────────────────────────────────── */
.whatsapp-btn {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 900;
  background: #25d366;
  color: var(--white);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border-radius: 999px;
  box-shadow: 0 8px 30px rgba(37,211,102,0.4);
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
}
.whatsapp-btn:hover { background: #1fba58; transform: translateY(-3px); box-shadow: 0 12px 40px rgba(37,211,102,0.5); }
.wa-text { display: block; }

/* ── MOBILE STICKY CTA ──────────────────────────────────────── */
.mobile-sticky-cta {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 800;
  background: var(--dark);
  padding: 12px 20px;
  gap: 12px;
  border-top: 1px solid var(--dark-3);
  box-shadow: 0 -4px 20px rgba(0,0,0,0.4);
}

/* ── SERVICE PAGE STYLES ────────────────────────────────────── */
.page-hero {
  min-height: 60vh;
  position: relative;
  display: flex;
  align-items: flex-end;
  padding-top: 100px;
}
.page-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.page-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,10,10,0.9) 20%, rgba(10,10,10,0.4) 100%);
  z-index: 1;
}
.page-hero-content {
  position: relative;
  z-index: 2;
  padding: 60px 0;
  max-width: 680px;
}
.page-hero-content .section-tag { display: block; margin-bottom: 16px; }
.page-hero-content h1 { color: var(--white); margin-bottom: 20px; font-size: clamp(2rem, 5vw, 3.5rem); }
.page-hero-content p { color: rgba(255,255,255,0.75); font-size: 1.1rem; margin-bottom: 32px; }

.problem-solution { background: var(--bone); padding: 80px 0; }
.ps-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.ps-left h2 { margin-bottom: 20px; }
.ps-left p { font-size: 1rem; line-height: 1.8; margin-bottom: 20px; }
.problem-list { display: flex; flex-direction: column; gap: 12px; }
.problem-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--mid);
}
.problem-list li::before { content: '✗'; color: #e04040; font-weight: 700; flex-shrink: 0; }
.solution-list li::before { content: '✓'; color: #2da844; }

.benefits-section { padding: 80px 0; }
.benefits-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.benefit-card {
  padding: 32px 24px;
  border: 1.5px solid rgba(0,0,0,0.08);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: var(--transition);
}
.benefit-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: var(--shadow); }
.benefit-icon { font-size: 2.5rem; margin-bottom: 16px; }
.benefit-card h4 { color: var(--dark); font-size: 1rem; margin-bottom: 10px; }
.benefit-card p { font-size: 0.88rem; line-height: 1.65; }

/* ── RESPONSIVE ─────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .certs-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .benefits-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section-pad { padding: 64px 0; }
  
  /* Nav */
  .main-nav {
    position: fixed;
    top: 0; right: -100%;
    width: min(320px, 90vw);
    height: 100vh;
    background: var(--dark);
    flex-direction: column;
    align-items: flex-start;
    padding: 80px 32px 40px;
    gap: 4px;
    transition: right var(--transition);
    box-shadow: -8px 0 40px rgba(0,0,0,0.4);
    overflow-y: auto;
    z-index: 999;
  }
  .main-nav.open { right: 0; }
  .nav-dropdown { width: 100%; }
  .dropdown-menu {
    position: static;
    transform: none;
    opacity: 1;
    pointer-events: auto;
    background: var(--dark-3);
    margin-top: 8px;
    margin-left: 12px;
    width: auto;
  }
  .hamburger { display: flex; }
  .nav-cta { display: none; }

  /* Hero */
  .hero-content { padding-top: 120px; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hero-stats { gap: 16px; }
  .stat-divider { height: 28px; }
  .hero-scroll-hint { display: none; }

  /* Grids */
  .why-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .testimonials-grid .testimonial-card:last-child { max-width: 100%; grid-column: auto; }
  .certs-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .benefits-grid { grid-template-columns: 1fr 1fr; }
  .ps-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }

  /* Process */
  .process-step, .process-step--alt {
    grid-template-columns: 60px 1fr;
  }
  .process-step--alt .step-visual { display: none; }
  .process-step .step-visual { display: none; }
  .process-step--alt .step-number { order: 0; text-align: left; }

  /* CTA strip */
  .cta-strip-inner { flex-direction: column; text-align: center; }

  /* WhatsApp */
  .wa-text { display: none; }
  .whatsapp-btn { bottom: 80px; right: 20px; padding: 14px; border-radius: 50%; }
  
  /* Mobile sticky */
  .mobile-sticky-cta { display: flex; }

  /* Form */
  .lead-form, .contact-right { padding: 32px 24px; }

  /* Trust bar */
  .trust-logos { gap: 28px; }
}

@media (max-width: 480px) {
  .hero-stats { flex-direction: column; align-items: flex-start; }
  .stat-divider { width: 40px; height: 1px; }
  .certs-grid { grid-template-columns: 1fr; }
  .benefits-grid { grid-template-columns: 1fr; }
}