/* ================================================================
   bigSIMPLE Development — styles.css
   ================================================================ */

/* ── Reset & Base ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Colors */
  --bg:           #09090f;
  --bg-2:         #0f0f18;
  --bg-card:      #13131e;
  --bg-card-h:    #181825;
  --border:       rgba(255,255,255,0.07);
  --border-h:     rgba(255,255,255,0.14);

  --txt:          #f0f0f8;
  --txt-2:        #9090a8;
  --txt-3:        #58586e;

  --accent:       #6366f1;
  --accent-2:     #8b5cf6;
  --accent-3:     #06b6d4;

  /* Product palette */
  --acumen-a:     #4f46e5;
  --acumen-b:     #818cf8;
  --leads-a:      #f59e0b;
  --leads-b:      #fb923c;
  --depths-a:     #a855f7;
  --depths-b:     #ec4899;

  /* Spacing */
  --sp-1: 0.25rem; --sp-2: 0.5rem;  --sp-3: 0.75rem;
  --sp-4: 1rem;    --sp-5: 1.25rem; --sp-6: 1.5rem;
  --sp-8: 2rem;    --sp-10: 2.5rem; --sp-12: 3rem;
  --sp-16: 4rem;   --sp-20: 5rem;   --sp-24: 6rem;

  /* Typography */
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;
  --text-6xl:  3.75rem;

  /* Other */
  --radius-sm: 6px;
  --radius:    12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --shadow:    0 4px 24px rgba(0,0,0,0.4);
  --transition: 0.22s cubic-bezier(0.4,0,0.2,1);
}

html { scroll-behavior: smooth; }

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

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

/* ── Utility ──────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--sp-6);
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 40%, var(--accent-3) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Buttons ──────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0.625rem var(--sp-5);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 0 0 1px rgba(99,102,241,0.4), 0 4px 16px rgba(99,102,241,0.25);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 0 1px rgba(99,102,241,0.6), 0 6px 24px rgba(99,102,241,0.35);
}
.btn-primary:active { transform: translateY(0); }

.btn-outline {
  background: transparent;
  color: var(--txt);
  border: 1px solid var(--border-h);
}
.btn-outline:hover {
  border-color: rgba(99,102,241,0.5);
  color: var(--accent-2);
  background: rgba(99,102,241,0.06);
}

.btn-ghost {
  background: transparent;
  color: var(--txt-2);
}
.btn-ghost:hover { color: var(--txt); }

.btn-lg { padding: 0.8rem var(--sp-6); font-size: var(--text-base); }

/* ── Section layout helpers ───────────────────────────────────── */
.section { padding: var(--sp-24) 0; position: relative; }

.section-header { text-align: center; margin-bottom: var(--sp-16); }
.section-label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--sp-3);
}
.section-title {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: var(--sp-4);
}
.section-sub {
  font-size: var(--text-lg);
  color: var(--txt-2);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ── Reveal animations ────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s cubic-bezier(0.4,0,0.2,1),
              transform 0.65s cubic-bezier(0.4,0,0.2,1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.12s; }
.reveal-delay-2 { transition-delay: 0.24s; }
.reveal-delay-3 { transition-delay: 0.36s; }

/* ================================================================
   NAVIGATION
   ================================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background var(--transition), border-color var(--transition), backdrop-filter var(--transition);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(9,9,15,0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-color: var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  height: 68px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--sp-6);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-shrink: 0;
}
.nav-logo-text {
  font-size: var(--text-base);
  font-weight: 300;
  letter-spacing: -0.01em;
  color: var(--txt);
}
.nav-logo-text strong {
  font-weight: 800;
  letter-spacing: -0.03em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  margin-left: auto;
}
.nav-links a {
  padding: var(--sp-2) var(--sp-3);
  font-size: var(--text-sm);
  color: var(--txt-2);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.nav-links a:hover { color: var(--txt); background: rgba(255,255,255,0.05); }

.nav-cta { margin-left: var(--sp-2); flex-shrink: 0; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--sp-2);
  margin-left: auto;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--txt-2);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.nav-mobile {
  display: none;
  flex-direction: column;
  padding: var(--sp-4) var(--sp-6) var(--sp-6);
  border-top: 1px solid var(--border);
  background: rgba(9,9,15,0.97);
  backdrop-filter: blur(20px);
}
.nav-mobile.open { display: flex; }
.nav-mobile-link {
  padding: var(--sp-3) 0;
  font-size: var(--text-base);
  color: var(--txt-2);
  border-bottom: 1px solid var(--border);
  transition: color var(--transition);
}
.nav-mobile-link:hover { color: var(--txt); }
.nav-mobile-cta { margin-top: var(--sp-4); text-align: center; justify-content: center; }

/* ================================================================
   HERO
   ================================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero-backdrop {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(99,102,241,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,0.08) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.18;
  animation: glow-drift 12s ease-in-out infinite alternate;
}
.hero-glow-1 {
  width: 600px; height: 600px;
  top: -200px; left: -100px;
  background: radial-gradient(circle, var(--accent), transparent 70%);
}
.hero-glow-2 {
  width: 500px; height: 500px;
  top: -100px; right: -100px;
  background: radial-gradient(circle, var(--accent-3), transparent 70%);
  animation-delay: -6s;
  animation-direction: alternate-reverse;
}

@keyframes glow-drift {
  0%   { transform: translate(0,0) scale(1); }
  100% { transform: translate(30px, 40px) scale(1.05); }
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: var(--sp-16);
  align-items: center;
}

.hero-content { max-width: 600px; }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(99,102,241,0.1);
  border: 1px solid rgba(99,102,241,0.25);
  border-radius: 100px;
  padding: var(--sp-1) var(--sp-4);
  margin-bottom: var(--sp-6);
}
.dot {
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

.hero-headline {
  font-size: clamp(var(--text-4xl), 5.5vw, var(--text-6xl));
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.04em;
  margin-bottom: var(--sp-6);
}

.hero-sub {
  font-size: var(--text-lg);
  color: var(--txt-2);
  line-height: 1.75;
  margin-bottom: var(--sp-8);
  max-width: 520px;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-3);
}

/* Hero visual / floating cards */
.hero-visual { position: relative; }

.hero-cards {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.hero-card {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-4) var(--sp-5);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  animation: card-float 6s ease-in-out infinite;
}
.hero-card:nth-child(2) { animation-delay: -2s; margin-left: var(--sp-6); }
.hero-card:nth-child(3) { animation-delay: -4s; margin-left: var(--sp-3); }

@keyframes card-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.hero-card:hover {
  transform: translateY(-4px) scale(1.01) !important;
  box-shadow: var(--shadow);
}

.hero-card-icon {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius);
  flex-shrink: 0;
}
.hero-card-acumen .hero-card-icon { background: rgba(79,70,229,0.15); color: var(--acumen-b); }
.hero-card-leads  .hero-card-icon { background: rgba(245,158,11,0.15); color: var(--leads-a); }
.hero-card-depths .hero-card-icon { background: rgba(168,85,247,0.15); color: var(--depths-a); }

.hero-card-acumen { border-color: rgba(79,70,229,0.2); }
.hero-card-leads  { border-color: rgba(245,158,11,0.2); }
.hero-card-depths { border-color: rgba(168,85,247,0.2); }

.hero-card-name { font-size: var(--text-sm); font-weight: 700; }
.hero-card-tag  { font-size: var(--text-xs); color: var(--txt-2); margin-top: 2px; }

/* Scroll hint */
.hero-scroll-hint {
  position: absolute;
  bottom: var(--sp-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--text-xs);
  color: var(--txt-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  z-index: 1;
}
.scroll-arrow {
  width: 20px; height: 20px;
  border-right: 2px solid var(--txt-3);
  border-bottom: 2px solid var(--txt-3);
  transform: rotate(45deg);
  animation: bounce 2s ease-in-out infinite;
}
@keyframes bounce {
  0%, 100% { transform: rotate(45deg) translate(0,0); opacity: 1; }
  50% { transform: rotate(45deg) translate(3px,3px); opacity: 0.5; }
}

/* ================================================================
   PRODUCTS
   ================================================================ */
.products { background: var(--bg-2); }

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
}

.product-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--sp-8);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

/* Per-product border accent on hover */
.product-acumen:hover { border-color: rgba(79,70,229,0.4); }
.product-leads:hover  { border-color: rgba(245,158,11,0.4); }
.product-depths:hover { border-color: rgba(168,85,247,0.4); }

/* Glowing background orb */
.product-glow {
  position: absolute;
  top: -60px; right: -60px;
  width: 200px; height: 200px;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0;
  transition: opacity 0.4s;
  pointer-events: none;
}
.product-card:hover .product-glow { opacity: 0.12; }
.product-acumen .product-glow { background: var(--acumen-a); }
.product-leads  .product-glow { background: var(--leads-a); }
.product-depths .product-glow { background: var(--depths-a); }

.product-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--sp-3);
}

.product-icon-wrap {
  width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  flex-shrink: 0;
}
.product-acumen .product-icon-wrap { background: rgba(79,70,229,0.12); color: var(--acumen-b); border-color: rgba(79,70,229,0.2); }
.product-leads  .product-icon-wrap { background: rgba(245,158,11,0.12); color: var(--leads-a); border-color: rgba(245,158,11,0.2); }
.product-depths .product-icon-wrap { background: rgba(168,85,247,0.12); color: var(--depths-a); border-color: rgba(168,85,247,0.2); }

.product-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--sp-1);
}
.product-family {
  font-size: var(--text-xs);
  color: var(--txt-3);
  font-weight: 500;
}
.product-category {
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 100px;
}
.product-acumen .product-category { background: rgba(79,70,229,0.15); color: var(--acumen-b); }
.product-leads  .product-category { background: rgba(245,158,11,0.15); color: var(--leads-a); }
.product-depths .product-category { background: rgba(168,85,247,0.15); color: var(--depths-a); }

.product-name {
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
}
.product-tagline {
  font-size: var(--text-sm);
  font-style: italic;
  color: var(--txt-2);
  margin-top: calc(-1 * var(--sp-2));
}

.product-desc {
  font-size: var(--text-sm);
  color: var(--txt-2);
  line-height: 1.7;
}

.product-features {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  flex: 1;
}
.product-features li {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--text-sm);
  color: var(--txt-2);
}
.product-acumen .product-features li svg { color: var(--acumen-b); }
.product-leads  .product-features li svg { color: var(--leads-a); }
.product-depths .product-features li svg { color: var(--depths-a); }

.product-targets {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  padding-top: var(--sp-2);
  border-top: 1px solid var(--border);
}
.product-targets span {
  font-size: var(--text-xs);
  color: var(--txt-3);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  padding: 2px 10px;
  border-radius: 100px;
}

.product-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  padding-top: var(--sp-3);
  border-top: 1px solid var(--border);
  margin-top: auto;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--text-xs);
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 100px;
}
.status-dev {
  background: rgba(245,158,11,0.1);
  color: #fbbf24;
  border: 1px solid rgba(245,158,11,0.2);
}
.status-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
  animation: pulse 2s ease-in-out infinite;
}

.product-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--txt-2);
  transition: color var(--transition), gap var(--transition);
}
.product-link:hover { gap: 8px; }
.product-acumen .product-link:hover { color: var(--acumen-b); }
.product-leads  .product-link:hover { color: var(--leads-a); }
.product-depths .product-link:hover { color: var(--depths-a); }

/* ================================================================
   MISSION
   ================================================================ */
.mission {
  background: var(--bg);
  overflow: hidden;
}

.mission-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}
.mission-glow {
  position: absolute;
  bottom: -200px; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(99,102,241,0.15), transparent 70%);
  filter: blur(60px);
}

.mission .container { position: relative; z-index: 1; }

.mission-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-16);
  align-items: start;
}

.mission-content .section-label { display: block; }
.mission-content .section-title { margin-bottom: var(--sp-6); }

.mission-content p {
  font-size: var(--text-base);
  color: var(--txt-2);
  line-height: 1.8;
  margin-bottom: var(--sp-4);
}
.mission-content p strong { color: var(--txt); font-weight: 600; }

.mission-values {
  display: flex;
  flex-direction: column;
  gap: var(--sp-6);
}

.value-item {
  display: flex;
  gap: var(--sp-4);
  align-items: flex-start;
}
.value-icon {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(99,102,241,0.1);
  border: 1px solid rgba(99,102,241,0.2);
  border-radius: var(--radius);
  color: var(--accent-2);
  flex-shrink: 0;
}
.value-item h4 {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--sp-1);
}
.value-item p {
  font-size: var(--text-sm);
  color: var(--txt-2);
  line-height: 1.7;
}

/* ================================================================
   STACK / TECHNOLOGY
   ================================================================ */
.stack { background: var(--bg-2); }

.stack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-4);
}

.stack-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--sp-6);
  transition: transform var(--transition), border-color var(--transition);
}
.stack-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-h);
}

.stack-icon {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(99,102,241,0.1);
  border-radius: var(--radius);
  color: var(--accent);
  margin-bottom: var(--sp-4);
}
.stack-card h4 {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--sp-2);
}
.stack-card p {
  font-size: var(--text-sm);
  color: var(--txt-2);
  line-height: 1.7;
  margin-bottom: var(--sp-4);
}
.stack-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}
.stack-tags span {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--txt-3);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  padding: 2px 10px;
  border-radius: 100px;
}

/* ================================================================
   CONTACT
   ================================================================ */
.contact {
  background: var(--bg);
  overflow: hidden;
  text-align: center;
}
.contact-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}
.contact-glow {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 700px; height: 400px;
  background: radial-gradient(ellipse, rgba(99,102,241,0.18) 0%, transparent 70%);
  filter: blur(60px);
}
.contact .container { position: relative; z-index: 1; }

.contact-inner {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--sp-16) var(--sp-12);
  max-width: 720px;
  margin: 0 auto;
}
.contact-inner .section-label { display: block; margin-bottom: var(--sp-3); }
.contact-inner .section-title { margin-bottom: var(--sp-4); }

.contact-sub {
  font-size: var(--text-lg);
  color: var(--txt-2);
  line-height: 1.7;
  margin-bottom: var(--sp-8);
}

.contact-actions { margin-bottom: var(--sp-8); display: flex; justify-content: center; }

.contact-products {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--sp-2);
}
.contact-product-chip {
  font-size: var(--text-xs);
  font-weight: 500;
  padding: var(--sp-2) var(--sp-4);
  border-radius: 100px;
  border: 1px solid;
  transition: var(--transition);
}
.contact-product-chip:hover { transform: translateY(-1px); }
.contact-chip-acumen { background: rgba(79,70,229,0.08); color: var(--acumen-b); border-color: rgba(79,70,229,0.25); }
.contact-chip-leads  { background: rgba(245,158,11,0.08); color: var(--leads-a); border-color: rgba(245,158,11,0.25); }
.contact-chip-depths { background: rgba(168,85,247,0.08); color: var(--depths-a); border-color: rgba(168,85,247,0.25); }
.contact-chip-acumen:hover { background: rgba(79,70,229,0.16); }
.contact-chip-leads:hover  { background: rgba(245,158,11,0.16); }
.contact-chip-depths:hover { background: rgba(168,85,247,0.16); }

/* ================================================================
   FOOTER
   ================================================================ */
.footer {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  padding: var(--sp-16) 0 var(--sp-8);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--sp-12);
  margin-bottom: var(--sp-12);
}

.footer-logo { margin-bottom: var(--sp-3); }
.footer-tagline { font-size: var(--text-sm); color: var(--txt-2); margin-bottom: var(--sp-2); }
.footer-url { font-size: var(--text-xs); color: var(--txt-3); }

.footer-links-group h5 {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--txt-3);
  margin-bottom: var(--sp-4);
}
.footer-links-group ul { display: flex; flex-direction: column; gap: var(--sp-3); }
.footer-links-group li a {
  font-size: var(--text-sm);
  color: var(--txt-2);
  transition: color var(--transition);
}
.footer-links-group li a:hover { color: var(--txt); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--sp-6);
  border-top: 1px solid var(--border);
  gap: var(--sp-4);
  flex-wrap: wrap;
}
.footer-bottom p { font-size: var(--text-xs); color: var(--txt-3); }
.footer-credit { font-style: italic; }

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 1024px) {
  .products-grid { grid-template-columns: 1fr 1fr; }
  .stack-grid { grid-template-columns: 1fr 1fr; }

  .hero .container {
    grid-template-columns: 1fr;
    gap: var(--sp-12);
  }
  .hero-content { max-width: 100%; }
  .hero-visual { display: none; }

  .mission-layout { grid-template-columns: 1fr; gap: var(--sp-10); }

  .footer-top { grid-template-columns: 1fr 1fr; gap: var(--sp-8); }
}

@media (max-width: 768px) {
  :root { --sp-24: 4rem; --sp-16: 3rem; }

  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-toggle { display: flex; }

  .products-grid { grid-template-columns: 1fr; }
  .stack-grid { grid-template-columns: 1fr; }

  .hero-headline { font-size: var(--text-4xl); }
  .hero-scroll-hint { display: none; }

  .contact-inner { padding: var(--sp-10) var(--sp-6); }

  .footer-top { grid-template-columns: 1fr; gap: var(--sp-8); }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .container { padding: 0 var(--sp-4); }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .product-footer { flex-direction: column; align-items: flex-start; }
  .section { padding: 3rem 0; }
}

/* ── Nav active link ─────────────────────────────────────────── */
.nav-links a.active { color: var(--txt); }

/* ── Smooth focus outlines for accessibility ─────────────────── */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}