/* ==========================================================================
   Pelsam Tanzania — Premium One-Page Website
   ========================================================================== */

:root {
  --color-primary: #5D9CEC;
  --color-primary-dark: #4A8BD4;
  --color-primary-light: #7AB0F0;
  --color-accent: #5D9CEC;

  --color-bg: #FFFFFF;
  --color-bg-alt: #F8FAFC;
  --color-bg-dark: #0F172A;
  --color-bg-card: #FFFFFF;

  --color-text: #0F172A;
  --color-text-muted: #64748B;
  --color-text-light: #94A3B8;
  --color-text-inverse: #F8FAFC;

  --color-border: #E2E8F0;
  --color-border-light: #F1F5F9;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --font: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --header-height: 72px;
  --container-max: 1200px;
  --section-py: clamp(4rem, 8vw, 6rem);

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, select, textarea {
  font: inherit;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 9999;
  padding: 0.75rem 1.25rem;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.skip-link:focus {
  top: 1rem;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  font-weight: 600;
  font-size: 0.9375rem;
  border-radius: var(--radius-md);
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 1px 2px rgba(93, 156, 236, 0.2);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}

.btn--outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(93, 156, 236, 0.04);
}

.btn--white {
  background: #fff;
  color: var(--color-primary);
}

.btn--white:hover {
  background: #F1F5F9;
  transform: translateY(-1px);
}

.btn--outline-white {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.4);
}

.btn--outline-white:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.7);
}

.btn--sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn--lg {
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
}

.btn--full {
  width: 100%;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.header--scrolled {
  background: rgba(255, 255, 255, 0.95);
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 1.5rem;
}

.logo {
  flex-shrink: 0;
  color: var(--color-text);
}

.logo__img {
  height: 48px;
  width: auto;
  display: block;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav__link {
  padding: 0.5rem 0.875rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-text);
  background: var(--color-bg-alt);
}

.header__cta {
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.nav-toggle:hover {
  background: var(--color-bg-alt);
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-overlay {
  display: none;
}

/* Hero */
.hero {
  position: relative;
  padding: calc(var(--header-height) + 3rem) 0 var(--section-py);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(93, 156, 236, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 20% 80%, rgba(14, 165, 233, 0.05) 0%, transparent 50%),
    linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
  z-index: 0;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.hero__eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.hero__title {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: 1rem;
}

.hero__subtitle {
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 0.75rem;
  line-height: 1.5;
}

.hero__desc {
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  max-width: 520px;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
}

.hero__visual img {
  width: 100%;
  max-width: 560px;
  margin-left: auto;
}

/* Visual frames for product/dashboard images */
.visual-frame {
  margin: 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: linear-gradient(145deg, #F8FAFC 0%, #EEF2FF 100%);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border);
}

.visual-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.visual-frame--hero {
  max-width: 580px;
  margin-left: auto;
}

.visual-frame--hero img {
  object-fit: contain;
  padding: 0.5rem;
}

.visual-frame--dashboard {
  max-width: 960px;
  margin: 0 auto;
}

.visual-frame--dashboard img {
  object-fit: cover;
}

/* Sections */
.section {
  padding: var(--section-py) 0;
}

.section--alt {
  background: var(--color-bg-alt);
}

.section__header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3rem;
}

.section__title {
  font-size: clamp(1.75rem, 3.5vw, 2.375rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 0.75rem;
}

.section__subtitle {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.section__cta {
  text-align: center;
  margin-top: 2.5rem;
}

/* Cards Grid */
.cards-grid {
  display: grid;
  gap: 1.5rem;
}

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

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(93, 156, 236, 0.15);
}

.card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  background: rgba(93, 156, 236, 0.08);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  margin-bottom: 1.25rem;
}

.card__title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.card__desc {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
  line-height: 1.6;
}

.card__list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.card__list li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
  opacity: 0.7;
}

/* Industries */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.industry-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.industry-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: rgba(93, 156, 236, 0.12);
}

.industry-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, rgba(93, 156, 236, 0.1) 0%, rgba(14, 165, 233, 0.08) 100%);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
}

.industry-card__title {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 0.375rem;
}

.industry-card__desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* Showcase */
.showcase {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}

.showcase__inner {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.showcase__content {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.showcase__lead {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  font-weight: 600;
  color: var(--color-primary);
  margin: 0.5rem 0 1rem;
}

.showcase__desc {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
}

.feature-tags li {
  padding: 0.375rem 0.875rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: border-color var(--transition), color var(--transition);
}

.feature-tags li:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.showcase__visual {
  width: 100%;
}

.showcase__visual img {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
}

/* Hardware */
.hardware-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.hardware-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.hardware-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.hardware-card__img {
  background: linear-gradient(180deg, #F1F5F9 0%, #E2E8F0 100%);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 180px;
}

.hardware-card__img img {
  max-height: 160px;
  width: auto;
}

.hardware-card__img--photo {
  background: linear-gradient(180deg, #F8FAFC 0%, #EEF2FF 100%);
  padding: 1rem;
  min-height: 200px;
}

.hardware-card__img--photo img {
  max-height: 180px;
  width: 100%;
  object-fit: contain;
}

.hardware-card__title {
  font-size: 1.0625rem;
  font-weight: 600;
  padding: 1.25rem 1.25rem 0.375rem;
}

.hardware-card__desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  padding: 0 1.25rem 1.25rem;
  line-height: 1.5;
}

/* Why Pelsam */
.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.why-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.why-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: rgba(93, 156, 236, 0.12);
}

.why-card--wide {
  grid-column: 1 / -1;
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
}

.why-card--wide .why-card__icon {
  flex-shrink: 0;
}

.why-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: rgba(93, 156, 236, 0.1);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
}

.why-card--wide .why-card__icon {
  margin-bottom: 0;
}

.why-card__title {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 0.375rem;
}

.why-card__desc {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Tanzania Section */
.tanzania {
  position: relative;
  background: var(--color-bg-dark);
  color: var(--color-text-inverse);
  padding: 0;
  overflow: hidden;
}

.tanzania__visual {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  opacity: 0.6;
}

.tanzania__visual img {
  width: 100%;
  height: auto;
}

.tanzania__inner {
  position: relative;
  z-index: 1;
  padding: var(--section-py) 0;
}

.tanzania__content {
  max-width: 640px;
  text-align: center;
  margin: 0 auto;
}

.tanzania__eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary-light);
  margin-bottom: 1rem;
}

.tanzania__title {
  font-size: clamp(1.75rem, 3.5vw, 2.375rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.tanzania__text {
  font-size: 1.0625rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  padding: clamp(3.5rem, 7vw, 5rem) 0;
}

.cta-section__inner {
  text-align: center;
}

.cta-section__title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.cta-section__text {
  font-size: 1.125rem;
  opacity: 0.9;
  margin-bottom: 2rem;
}

.cta-section__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.875rem;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
  align-items: start;
}

.contact-info__name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.contact-info__location {
  color: var(--color-text-muted);
  margin-bottom: 2rem;
}

.contact-info__block {
  margin-bottom: 2rem;
}

.contact-info__label {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.contact-info__list li {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  padding: 0.25rem 0;
}

.contact-channels {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.contact-channel {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  padding: 0.625rem 0;
  transition: color var(--transition);
}

.contact-channel:hover {
  color: var(--color-primary);
}

.contact-channel--placeholder {
  cursor: default;
  color: var(--color-text-muted);
}

.contact-channel--placeholder:hover {
  color: var(--color-text-muted);
}

.contact-channel svg {
  flex-shrink: 0;
  color: var(--color-primary);
}

/* Form */
.contact-form {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: 1.25rem;
}

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

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.375rem;
  color: var(--color-text);
}

.form-group label span {
  color: #EF4444;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-light);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(93, 156, 236, 0.12);
}

.form-group input.error,
.form-group textarea.error {
  border-color: #EF4444;
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-status {
  margin-top: 1rem;
  font-size: 0.875rem;
  text-align: center;
}

.form-status.success {
  color: #16A34A;
}

.form-status.error {
  color: #EF4444;
}

.field-error {
  display: block;
  margin-top: 0.375rem;
  font-size: 0.8125rem;
  color: #EF4444;
}

/* Footer */
.footer {
  background: var(--color-bg-dark);
  color: var(--color-text-light);
  padding-top: 3.5rem;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2rem;
  padding-bottom: 2.5rem;
}

.footer__logo-link {
  display: inline-block;
}

.footer__logo-img {
  height: 56px;
  width: auto;
  display: block;
}

.footer__tagline {
  font-size: 0.875rem;
  margin-top: 0.5rem;
  line-height: 1.5;
  max-width: 240px;
}

.footer__heading {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #fff;
  margin-bottom: 1rem;
}

.footer__nav ul,
.footer__services ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer__nav a {
  font-size: 0.875rem;
  transition: color var(--transition);
}

.footer__nav a:hover {
  color: #fff;
}

.footer__services li {
  font-size: 0.875rem;
}

.footer__location p {
  font-size: 0.875rem;
}

.footer__phone {
  margin-top: 0.5rem;
}

.footer__email {
  margin-top: 0.25rem;
}

.footer__phone a,
.footer__email a {
  color: var(--color-primary-light);
  transition: color var(--transition);
}

.footer__phone a:hover,
.footer__email a:hover {
  color: #fff;
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.25rem 0;
}

.footer__bottom p {
  font-size: 0.8125rem;
  text-align: center;
  color: var(--color-text-light);
}

/* Animations */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  transition-delay: var(--delay, 0s);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive — Tablet */
@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__desc {
    margin-left: auto;
    margin-right: auto;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__visual img {
    margin: 0 auto;
    max-width: 480px;
  }

  .visual-frame--hero {
    margin: 0 auto;
  }

  .cards-grid--3 {
    grid-template-columns: 1fr;
  }

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

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

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer__inner {
    grid-template-columns: 1fr 1fr;
  }
}

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

  .nav-toggle {
    display: flex;
  }

  .header__cta {
    display: none;
  }

  .nav {
    position: fixed;
    top: 0;
    right: 0;
    width: min(320px, 85vw);
    height: 100vh;
    height: 100dvh;
    background: var(--color-bg);
    padding: calc(var(--header-height) + 1.5rem) 1.5rem 2rem;
    transform: translateX(100%);
    transition: transform var(--transition);
    box-shadow: var(--shadow-xl);
    z-index: 999;
  }

  .nav.open {
    transform: translateX(0);
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
  }

  .nav__link {
    padding: 0.875rem 1rem;
    font-size: 1rem;
  }

  .nav-overlay {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), visibility var(--transition);
    z-index: 998;
  }

  .nav-overlay.visible {
    opacity: 1;
    visibility: visible;
  }

  body.menu-open {
    overflow: hidden;
  }

  .industries-grid {
    grid-template-columns: 1fr;
  }

  .hardware-grid {
    grid-template-columns: 1fr;
  }

  .why-grid {
    grid-template-columns: 1fr;
  }

  .why-card--wide {
    flex-direction: column;
  }

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

  .footer__inner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero__actions .btn {
    width: 100%;
  }

  .cta-section__actions {
    flex-direction: column;
    align-items: stretch;
    max-width: 320px;
    margin: 0 auto;
  }

  .contact-form {
    padding: 1.5rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  .card {
    padding: 1.5rem;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .fade-up {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .btn:hover,
  .card:hover,
  .industry-card:hover,
  .hardware-card:hover,
  .why-card:hover {
    transform: none;
  }
}