/* ================================================
   Andrew Design Inc — Landing Page Styles
   Color scheme: #272727 (dark) / #f9f9f9 (light)
   Fonts: Cardo (headings) / Inter (body)
   ================================================ */

:root {
  --dark: #272727;
  --light: #f9f9f9;
  --accent: #c8a96e;        /* warm gold — engineering precision */
  --accent-dim: #a88a52;
  --mid: #4a4a4a;
  --border: rgba(200, 169, 110, 0.25);
  --card-bg: #1e1e1e;
  --font-heading: 'Cardo', Georgia, serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --section-pad: clamp(4rem, 8vw, 7rem);
  --max-w: 1200px;
  --radius: 4px;
  --transition: 0.3s ease;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--dark);
  color: var(--light);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

/* ── Typography ── */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: 0.02em;
}
.section-label {
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--light);
  margin-bottom: 1.5rem;
}
.section-sub {
  font-size: 1.05rem;
  color: rgba(249,249,249,0.65);
  max-width: 560px;
  line-height: 1.8;
}

/* ── Layout helpers ── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 5vw, 3rem);
}
.section { padding: var(--section-pad) 0; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }

/* ── Divider ── */
.divider {
  width: 48px; height: 2px;
  background: var(--accent);
  margin: 1.5rem 0 2rem;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}
.btn-primary {
  background: var(--accent);
  color: var(--dark);
}
.btn-primary:hover { background: var(--accent-dim); }
.btn-outline {
  background: transparent;
  color: var(--light);
  border: 1px solid rgba(249,249,249,0.3);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ── NAV ── */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.25rem 0;
  transition: background var(--transition), padding var(--transition);
}
.site-nav.scrolled {
  background: rgba(30, 30, 30, 0.96);
  backdrop-filter: blur(12px);
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: var(--light);
  letter-spacing: 0.05em;
}
.nav-logo span { color: var(--accent); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  font-size: 0.825rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(249,249,249,0.75);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--accent); }
.nav-links .btn { padding: 0.6rem 1.4rem; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--light);
  transition: var(--transition);
}

/* ── HERO ── */
.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 5rem;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 80% 50%, rgba(200,169,110,0.07) 0%, transparent 70%),
    radial-gradient(ellipse 50% 80% at 10% 80%, rgba(200,169,110,0.04) 0%, transparent 60%);
}
.hero-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(200,169,110,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200,169,110,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
}
.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
}
.hero-eyebrow::before {
  content: '';
  display: block;
  width: 40px; height: 1px;
  background: var(--accent);
}
.hero h1 {
  font-size: clamp(2.8rem, 6vw, 5.5rem);
  color: var(--light);
  margin-bottom: 1.75rem;
  line-height: 1.1;
}
.hero h1 em {
  font-style: normal;
  color: var(--accent);
}
.hero-lead {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: rgba(249,249,249,0.7);
  max-width: 520px;
  margin-bottom: 2.5rem;
  line-height: 1.8;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Floating tech badges */
.hero-badges {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  z-index: 1;
}
.badge {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(249,249,249,0.6);
  white-space: nowrap;
  animation: float 6s ease-in-out infinite;
}
.badge:nth-child(2) { animation-delay: 2s; }
.badge:nth-child(3) { animation-delay: 4s; }
.badge-accent { color: var(--accent); font-size: 1.1rem; margin-right: 0.5rem; }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ── STATS BAR ── */
.stats-bar {
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 2.5rem 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}
.stat-num {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  color: var(--accent);
  line-height: 1;
}
.stat-label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(249,249,249,0.5);
  margin-top: 0.4rem;
}

/* ── SERVICES ── */
.services { background: var(--dark); }
.services-header { text-align: center; margin-bottom: 3.5rem; }
.services-header .section-sub { margin: 0 auto; }
.service-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
  transition: border-color var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
  scroll-margin-top: 6rem;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.service-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.service-card:hover::before { opacity: 1; }
.service-icon {
  font-size: 2.2rem;
  margin-bottom: 1.5rem;
  display: block;
}
.service-card h3 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  color: var(--light);
}
.service-card p {
  font-size: 0.9rem;
  color: rgba(249,249,249,0.6);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}
.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: auto;
}
.tag {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(200,169,110,0.1);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 0.25rem 0.6rem;
}

/* ── ABOUT ── */
.about { background: #1a1a1a; }
.about-text .section-sub { max-width: 100%; }
.about-text p + p { margin-top: 1.25rem; }
.about-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.about-block {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-align: center;
}
.about-block-num {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  color: var(--accent);
  line-height: 1;
}
.about-block-label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(249,249,249,0.5);
  margin-top: 0.5rem;
}
.about-block.full { grid-column: 1 / -1; }

/* ── PROCESS ── */
.process { background: var(--dark); }
.process-header { text-align: center; margin-bottom: 3.5rem; }
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}
.process-steps::before {
  content: '';
  position: absolute;
  top: 2rem;
  left: 12.5%;
  right: 12.5%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border) 20%, var(--border) 80%, transparent);
}
.process-step {
  text-align: center;
  padding: 0 1.5rem;
  position: relative;
}
.step-num {
  width: 4rem; height: 4rem;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--card-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: var(--accent);
  position: relative;
  z-index: 1;
}
.process-step h4 {
  font-size: 1rem;
  margin-bottom: 0.75rem;
  color: var(--light);
}
.process-step p {
  font-size: 0.85rem;
  color: rgba(249,249,249,0.5);
  line-height: 1.7;
}

/* ── CONTACT CTA / FORM ── */
.cta-section {
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: var(--section-pad) 0;
  text-align: center;
}
.cta-section .section-title { margin-bottom: 1rem; }
.cta-section .section-sub { margin: 0 auto 2.5rem; }
.cta-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* Contact form */
.contact-form {
  max-width: 640px;
  margin: 0 auto;
  text-align: left;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.5s ease, opacity 0.4s ease, margin-top 0.5s ease;
  margin-top: 0;
}
.contact-form.open {
  max-height: 800px;
  opacity: 1;
  margin-top: 2.5rem;
}
.hp-field {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  overflow: hidden;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.form-group {
  margin-bottom: 1.25rem;
}
.form-group label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(249,249,249,0.5);
  margin-bottom: 0.5rem;
}
.form-group .required { color: var(--accent); }
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  background: var(--dark);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--light);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(249,249,249,0.25);
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-actions {
  text-align: center;
  margin-top: 0.5rem;
}
.form-status {
  margin-top: 1.25rem;
  font-size: 0.9rem;
  text-align: center;
  min-height: 1.5em;
}
.form-status.success { color: #6ec96e; }
.form-status.error { color: #e85c5c; }

/* Sent confirmation */
.form-confirmation {
  text-align: center;
  padding: 3rem 1rem;
}
.form-confirmation .confirm-icon {
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  border: 2px solid var(--accent);
  color: var(--accent);
  font-size: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
}
.form-confirmation h3 {
  font-size: 1.5rem;
  color: var(--light);
  margin-bottom: 0.75rem;
}
.form-confirmation p {
  font-size: 1rem;
  color: rgba(249,249,249,0.6);
  line-height: 1.7;
}

@media (max-width: 480px) {
  .form-row { grid-template-columns: 1fr; }
}

/* ── FOOTER ── */
.site-footer {
  background: #111;
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--border);
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(249,249,249,0.08);
  margin-bottom: 2rem;
}
.footer-brand .nav-logo { font-size: 1.4rem; margin-bottom: 1rem; }
.footer-brand p {
  font-size: 0.85rem;
  color: rgba(249,249,249,0.4);
  line-height: 1.8;
  max-width: 280px;
}
.footer-col h5 {
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(249,249,249,0.4);
  margin-bottom: 1rem;
}
.footer-col ul { list-style: none; }
.footer-col ul li + li { margin-top: 0.6rem; }
.footer-col ul a {
  font-size: 0.825rem;
  color: rgba(249,249,249,0.45);
  transition: color var(--transition);
}
.footer-col ul a:hover { color: var(--accent); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-copy {
  font-size: 0.78rem;
  color: rgba(249,249,249,0.25);
}
.social-links {
  display: flex;
  gap: 1.25rem;
}
.social-links a {
  font-size: 0.78rem;
  color: rgba(249,249,249,0.3);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color var(--transition);
}
.social-links a:hover { color: var(--accent); }

/* ── MOBILE NAV ── */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(27,27,27,0.98);
  z-index: 99;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-family: var(--font-heading);
  font-size: 2rem;
  color: rgba(249,249,249,0.8);
  transition: color var(--transition);
}
.mobile-menu a:hover { color: var(--accent); }
.mobile-close {
  position: absolute;
  top: 1.5rem; right: 1.5rem;
  background: none; border: none;
  color: var(--light);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .hero-badges { display: none; }
  .grid-4, .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .process-steps { grid-template-columns: repeat(2, 1fr); gap: 2rem; }
  .process-steps::before { display: none; }
}

@media (max-width: 768px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .hero h1 { font-size: clamp(2.2rem, 8vw, 3.5rem); }
  .about-visual { grid-template-columns: 1fr 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 2rem; }
  .footer-brand { grid-column: auto; }
}

@media (max-width: 480px) {
  .grid-4, .stats-grid { grid-template-columns: 1fr 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .cta-actions { flex-direction: column; align-items: center; }
}