/* ============================================================
   OSTEEN AI — styles.css
   ============================================================ */

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

:root {
  --black:      #0a0a0a;
  --dark:       #111111;
  --dark-2:     #1a1a1a;
  --dark-3:     #222222;
  --border:     #2a2a2a;
  --white:      #ffffff;
  --off-white:  #e8e8e8;
  --muted:      #888888;
  --accent:     #0ea5e9;   /* electric blue */
  --accent-dim: rgba(14, 165, 233, 0.12);
  --red:        #e03d3d;

  --font-display: 'Bebas Neue', sans-serif;
  --font-body:    'Space Grotesk', sans-serif;
  --font-ui:      'Inter', sans-serif;

  --container:  1200px;
  --radius:     6px;
  --radius-lg:  12px;
  --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  --header-h:   72px;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--black);
  color: var(--off-white);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; text-decoration: none; }

ul { list-style: none; }

/* ── Utility ──────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.text-accent { color: var(--accent); }

.section-eyebrow {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  line-height: 1.05;
  color: var(--white);
  letter-spacing: 0.01em;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  cursor: pointer;
  font-family: var(--font-ui);
  font-weight: 600;
  letter-spacing: 0.03em;
  border-radius: var(--radius);
  transition: transform var(--transition), background var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}

.btn--sm  { font-size: 0.82rem; padding: 9px 20px; }
.btn--lg  { font-size: 0.95rem; padding: 16px 36px; }
.btn--full { width: 100%; }

.btn--primary {
  background: var(--accent);
  color: var(--black);
}
.btn--primary:hover {
  background: #38bdf8;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(14, 165, 233, 0.3);
}
.btn--primary:active { transform: translateY(0); }

/* ── Header ───────────────────────────────────────────────── */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}

.header.scrolled {
  border-bottom-color: var(--border);
  background: rgba(10, 10, 10, 0.97);
}

.header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 40px;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.6rem;
  letter-spacing: 0.04em;
  color: var(--white);
  flex-shrink: 0;
}
.logo span { color: var(--accent); }
.logo--lg  { font-size: 2rem; }

.nav { margin-left: auto; }

.nav__list {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav__link {
  font-family: var(--font-ui);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--muted);
  transition: color var(--transition);
  position: relative;
}
.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}
.nav__link:hover { color: var(--white); }
.nav__link:hover::after { width: 100%; }

.header__cta { margin-left: 16px; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-h);
  position: relative;
  overflow: hidden;
}

.hero__bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 191, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 191, 255, 0.06) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 60px 60px, 60px 60px, 15px 15px, 15px 15px;
  mask-image: radial-gradient(ellipse 90% 90% at 50% 50%, black 30%, transparent 100%);
  animation: bgGridMove 22s linear infinite;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  padding: 80px 24px;
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}

.hero__eyebrow {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}
.hero__eyebrow::before {
  content: '';
  width: 32px; height: 2px;
  background: var(--accent);
  flex-shrink: 0;
}

.hero__headline {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 5.5vw, 5rem);
  line-height: 1;
  color: var(--white);
  letter-spacing: 0.02em;
  margin-bottom: 24px;
}
.hero__headline--accent { color: var(--accent); }

.hero__sub {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 480px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

/* Hero Visual */
.hero__visual {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: flex-end;
}

.hero__badge {
  background: var(--dark-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 32px;
  display: flex;
  align-items: center;
  gap: 20px;
  min-width: 240px;
  transition: transform var(--transition), border-color var(--transition);
}
.hero__badge:hover {
  transform: translateX(-8px);
  border-color: var(--accent);
}
.hero__badge--2 {
  border-color: rgba(14, 165, 233, 0.4);
  background: var(--accent-dim);
}
.hero__badge-num {
  font-family: var(--font-display);
  font-size: 2.8rem;
  color: var(--accent);
  line-height: 1;
}
.hero__badge-label {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--off-white);
  max-width: 100px;
  line-height: 1.35;
}

.hero__scroll-line {
  position: absolute;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 80px;
  background: linear-gradient(to bottom, transparent, var(--border));
  z-index: 2;
}

.hero__glow {
  position: absolute;
  bottom: -22%;
  right: -8%;
  width: 900px;
  height: 900px;
  background: radial-gradient(circle at center,
    rgba(0, 191, 255, 0.13) 0%,
    rgba(0, 191, 255, 0.04) 35%,
    transparent 65%);
  pointer-events: none;
}

.hero__particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  display: block;
}

.hero__noise {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.045;
  pointer-events: none;
  display: block;
}

@keyframes bgGridMove {
  from { background-position: 0 0, 0 0, 0 0, 0 0; }
  to   { background-position: 60px 60px, 60px 60px, 15px 15px, 15px 15px; }
}

/* ── Pillars ──────────────────────────────────────────────── */
.pillars {
  padding: 80px 0;
  background: var(--dark);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.pillars__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.pillar-card {
  padding: 48px 40px;
  background: var(--dark);
  border-right: 1px solid var(--border);
  transition: background var(--transition);
}
.pillar-card:last-child { border-right: none; }
.pillar-card:hover { background: var(--dark-2); }

/* .pillar-card--accent — intentionally no elevated resting state; all pillar cards equal */

.pillar-card__icon {
  width: 48px; height: 48px;
  color: var(--accent);
  margin-bottom: 24px;
}

.pillar-card__title {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--white);
  letter-spacing: 0.02em;
  margin-bottom: 14px;
}

.pillar-card__text {
  font-size: 0.92rem;
  color: var(--muted);
  line-height: 1.7;
}

/* ── Services ─────────────────────────────────────────────── */
.services {
  padding: 100px 0;
  background: var(--black);
}

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

.service-card {
  background: var(--dark-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  position: relative;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-dim), transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
}
.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(14, 165, 233, 0.35);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
}
.service-card:hover::before { opacity: 1; }

/* .service-card--featured — intentionally no elevated resting state; all service cards equal */

.service-card__badge {
  position: absolute;
  top: 20px; right: 20px;
  background: var(--accent);
  color: var(--black);
  font-family: var(--font-ui);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 3px;
}

.service-card__number {
  font-family: var(--font-display);
  font-size: 4rem;
  color: var(--border);
  line-height: 1;
  margin-bottom: 16px;
  transition: color var(--transition);
}
.service-card:hover .service-card__number { color: var(--accent); }

.service-card__icon {
  width: 44px; height: 44px;
  color: var(--accent);
  margin-bottom: 20px;
}

.service-card__title {
  font-family: var(--font-display);
  font-size: 1.7rem;
  color: var(--white);
  letter-spacing: 0.02em;
  margin-bottom: 14px;
}

.service-card__text {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 24px;
}

.service-card__list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.service-card__list li {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--off-white);
  padding-left: 16px;
  position: relative;
}
.service-card__list li::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* ── How It Works ─────────────────────────────────────────── */
.how-it-works {
  padding: 100px 0;
  background: var(--dark);
  border-top: 1px solid var(--border);
}

.steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  max-width: 960px;
  margin: 0 auto;
}

.step {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 40px 32px;
  background: var(--dark-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform var(--transition), border-color var(--transition);
}
.step:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
}

.step__num {
  font-family: var(--font-display);
  font-size: 3.5rem;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 16px;
}

.step__title {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--white);
  letter-spacing: 0.02em;
  margin-bottom: 12px;
}

.step__text {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.65;
}

.step__connector {
  flex-shrink: 0;
  width: 80px;
  color: var(--border);
  padding: 0 4px;
}
.step__connector svg { width: 100%; }

/* ── Industries ───────────────────────────────────────────── */
.industries {
  padding: 100px 0;
  background: var(--black);
}

.industries__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.industry-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 14px;
  padding: 32px 20px;
  background: var(--dark-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  cursor: default;
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}
.industry-card:hover {
  transform: translateY(-4px);
  border-color: rgba(14, 165, 233, 0.4);
  background: var(--dark-3);
}

.industry-card__icon {
  width: 40px; height: 40px;
  color: var(--accent);
  flex-shrink: 0;
}

.industry-card span {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--off-white);
  line-height: 1.4;
}

/* ── Portfolio / What We've Built ────────────────────────── */
.portfolio {
  padding: 100px 0;
  background: var(--dark);
  border-top: 1px solid var(--border);
}

.portfolio__sub {
  margin-top: 16px;
  font-size: 1rem;
  color: var(--muted);
}

.portfolio__cards {
  display: flex;
  flex-direction: column;
  gap: 32px;
  max-width: 980px;
  margin: 0 auto;
}

.product-card {
  background: var(--dark-2);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 0;
  align-items: start;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.product-card--live {
  border: 1px solid rgba(0, 191, 255, 0.35);
  box-shadow: 0 0 40px rgba(0, 191, 255, 0.06), inset 0 0 80px rgba(0, 191, 255, 0.02);
}
.product-card--live::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, #00BFFF 40%, #00BFFF 60%, transparent 100%);
  opacity: 0.7;
}
.product-card--live:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 191, 255, 0.55);
  box-shadow: 0 20px 56px rgba(0, 0, 0, 0.45), 0 0 48px rgba(0, 191, 255, 0.1);
}

.product-card--progress {
  border: 1px solid var(--border);
  opacity: 0.88;
}
.product-card--progress:hover {
  transform: translateY(-5px);
  opacity: 1;
  border-color: rgba(245, 158, 11, 0.3);
  box-shadow: 0 20px 56px rgba(0, 0, 0, 0.35);
}

.product-card__left {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding-right: 48px;
  border-right: 1px solid var(--border);
  align-self: stretch;
  justify-content: flex-start;
}

.product-card__right {
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding-left: 48px;
}

.product-card__meta {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.product-card__category {
  font-family: var(--font-ui);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}

.product-card__badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-ui);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 5px 11px;
  border-radius: 3px;
  width: fit-content;
}

.product-card__badge--live {
  background: rgba(0, 191, 255, 0.1);
  color: #00BFFF;
  border: 1px solid rgba(0, 191, 255, 0.28);
}

.product-card__badge--progress {
  background: rgba(245, 158, 11, 0.08);
  color: #F59E0B;
  border: 1px solid rgba(245, 158, 11, 0.22);
  animation: progressPulse 2.4s ease-in-out infinite;
}

@keyframes progressPulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(245, 158, 11, 0); }
  50% { opacity: 0.65; box-shadow: 0 0 0 5px rgba(245, 158, 11, 0.06); }
}

.product-card__name {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--white);
  letter-spacing: 0.02em;
  line-height: 1.05;
}

.product-card__desc {
  font-size: 0.92rem;
  color: var(--muted);
  line-height: 1.78;
}

.product-card__features {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.product-card__features li {
  font-family: var(--font-ui);
  font-size: 0.88rem;
  color: var(--off-white);
  padding-left: 22px;
  position: relative;
  line-height: 1.5;
}

.product-card__features li::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(14, 165, 233, 0.55);
}

/* Amber button */
.btn--amber {
  background: #F59E0B;
  color: #0a0a0a;
  border: none;
}
.btn--amber:hover {
  background: #FBBF24;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245, 158, 11, 0.3);
}
.btn--amber:active { transform: translateY(0); }

/* ── Audit / Form ─────────────────────────────────────────── */
.audit {
  padding: 100px 0;
  background: var(--dark);
  border-top: 1px solid var(--border);
}

.audit__inner {
  max-width: 760px;
  margin: 0 auto;
}

.audit__header {
  text-align: center;
  margin-bottom: 56px;
}

.audit__sub {
  margin-top: 16px;
  font-size: 1rem;
  color: var(--muted);
}

/* Form */
.audit-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--off-white);
  letter-spacing: 0.02em;
}

.req { color: var(--accent); }
.optional { color: var(--muted); font-weight: 400; }

.form-group input:not([type="radio"]),
.form-group textarea,
.form-group select {
  background: var(--dark-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.92rem;
  padding: 13px 16px;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
}

.form-group input:not([type="radio"])::placeholder,
.form-group textarea::placeholder {
  color: #555;
}

.form-group input:not([type="radio"]):focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.form-group input:not([type="radio"]).invalid,
.form-group textarea.invalid,
.form-group select.invalid {
  border-color: var(--red);
}

.form-group textarea { resize: vertical; min-height: 110px; }

.select-wrap { position: relative; }
.select-wrap::after {
  content: '';
  pointer-events: none;
  position: absolute;
  right: 16px; top: 50%;
  transform: translateY(-50%);
  border: 5px solid transparent;
  border-top-color: var(--muted);
  margin-top: 2px;
}
.select-wrap select { padding-right: 40px; cursor: pointer; }
.select-wrap select option { background: var(--dark-2); color: var(--white); }

/* Radio */
.radio-group {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  color: var(--off-white);
  cursor: pointer;
}

.radio-label input[type="radio"] {
  width: 18px; height: 18px;
  min-width: 18px;
  padding: 0;
  border-radius: 50%;
  accent-color: var(--accent);
  cursor: pointer;
}

.form-error {
  font-family: var(--font-ui);
  font-size: 0.76rem;
  color: var(--red);
  min-height: 16px;
}

.form-success {
  display: none;
  align-items: center;
  gap: 12px;
  background: rgba(14, 165, 233, 0.08);
  border: 1px solid rgba(14, 165, 233, 0.3);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  color: var(--off-white);
}
.form-success.show { display: flex; }
.form-success svg { width: 22px; height: 22px; color: var(--accent); flex-shrink: 0; }

/* ── Footer ───────────────────────────────────────────────── */
.footer {
  background: var(--dark-3);
  border-top: 1px solid var(--border);
  padding: 56px 0 32px;
}

.footer__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 40px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--border);
  gap: 40px;
  flex-wrap: wrap;
}

.footer__tagline {
  margin-top: 8px;
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.footer__nav ul {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.footer__nav a {
  font-family: var(--font-ui);
  font-size: 0.88rem;
  color: var(--muted);
  transition: color var(--transition);
}
.footer__nav a:hover { color: var(--white); }

.footer__bottom {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: #444;
}

/* ── Scroll animation ─────────────────────────────────────── */
[data-animate] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
[data-animate].in-view {
  opacity: 1;
  transform: none;
}

/* ── Responsive ───────────────────────────────────────────── */

/* Tablet */
@media (max-width: 960px) {
  .hero__inner {
    grid-template-columns: 1fr;
    padding: 60px 24px;
    text-align: center;
  }
  .hero__sub { max-width: 100%; }
  .hero__eyebrow { justify-content: center; }
  .hero__visual {
    align-items: center;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }
  .hero__badge { min-width: 180px; }

  .pillars__grid { grid-template-columns: 1fr; }
  .pillar-card { border-right: none; border-bottom: 1px solid var(--border); }
  .pillar-card:last-child { border-bottom: none; }

  .services__grid { grid-template-columns: 1fr; max-width: 520px; margin: 0 auto; }

  .steps {
    flex-direction: column;
    gap: 16px;
  }
  .step__connector {
    transform: rotate(90deg);
    width: 48px;
  }

  .industries__grid { grid-template-columns: repeat(3, 1fr); }

  .product-card {
    grid-template-columns: 1fr;
    padding: 36px;
    gap: 0;
  }
  .product-card__left {
    padding-right: 0;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding-bottom: 28px;
    margin-bottom: 0;
  }
  .product-card__right {
    padding-left: 0;
    padding-top: 28px;
  }

  .form-row { grid-template-columns: 1fr; }
}

/* Mobile */
@media (max-width: 768px) {
  :root { --header-h: 64px; }

  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(14px);
    padding: 24px;
    border-bottom: 1px solid var(--border);
    transform: translateY(calc(-100% - var(--header-h)));
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    z-index: 99;
  }
  .nav.open {
    transform: translateY(0);
    pointer-events: all;
  }
  .nav__list { flex-direction: column; gap: 20px; align-items: flex-start; }
  .nav__link { font-size: 1.1rem; }
  .header__cta { display: none; }
  .hamburger { display: flex; }

  .hero__headline { font-size: clamp(2.2rem, 8vw, 3rem); }

  .industries__grid { grid-template-columns: repeat(2, 1fr); }

  .product-card { padding: 28px 24px; }

  .footer__top { flex-direction: column; gap: 24px; }
  .footer__nav ul { gap: 20px; }

  .radio-group { flex-direction: column; gap: 12px; }
}

@media (max-width: 400px) {
  .industries__grid { grid-template-columns: 1fr 1fr; }
  .hero__visual { flex-direction: column; }
  .hero__badge { min-width: unset; width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .hero__bg-grid { animation: none; }
}