:root {
  color-scheme: light;
  --ink: #0b1220;
  --ink-soft: #263447;
  --paper: #f8fafc;
  --surface: #ffffff;
  --section-surface: #ffffff;
  --line: #d9e2ec;
  --header-bg: rgba(248, 250, 252, 0.92);
  --navy: #0e1b2a;
  --navy-2: #15263a;
  --teal: #38c6d9;
  --teal-dark: #16859a;
  --red: #e9573f;
  --copper: #b97635;
  --shadow: 0 22px 60px rgba(14, 27, 42, 0.16);
  --radius: 8px;
  --header-height: 78px;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --ink: #edf5f7;
  --ink-soft: #b5c3cd;
  --paper: #10171d;
  --surface: #182229;
  --section-surface: #131c22;
  --line: #30404a;
  --header-bg: rgba(16, 23, 29, 0.94);
  --shadow: 0 22px 60px rgba(0, 0, 0, 0.3);
}

@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] {
    color-scheme: dark;
    --ink: #edf5f7;
    --ink-soft: #b5c3cd;
    --paper: #10171d;
    --surface: #182229;
    --section-surface: #131c22;
    --line: #30404a;
    --header-bg: rgba(16, 23, 29, 0.94);
    --shadow: 0 22px 60px rgba(0, 0, 0, 0.3);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

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

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

.shell {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 20;
  transform: translateY(-150%);
  padding: 10px 14px;
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  min-height: var(--header-height);
  background: var(--header-bg);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.nav {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand img {
  width: 44px;
  height: 44px;
  border-radius: 10px;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 1rem;
  letter-spacing: 0;
}

.brand small {
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--ink-soft);
  font-weight: 650;
  font-size: 0.94rem;
}

.theme-switcher {
  display: inline-grid;
  grid-template-columns: repeat(3, 34px);
  height: 36px;
  padding: 2px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.theme-switcher button {
  display: grid;
  place-items: center;
  width: 32px;
  height: 30px;
  padding: 0;
  border: 0;
  border-radius: 5px;
  color: var(--ink-soft);
  background: transparent;
  font: inherit;
  font-size: 0.86rem;
  font-weight: 800;
  cursor: pointer;
}

.theme-switcher button:hover,
.theme-switcher button:focus-visible {
  color: var(--ink);
  background: rgba(56, 198, 217, 0.12);
}

.theme-switcher button[aria-pressed="true"] {
  color: #fff;
  background: var(--teal-dark);
  box-shadow: 0 2px 8px rgba(14, 27, 42, 0.18);
}

.nav-menu > a:not(.button) {
  position: relative;
  padding-block: 10px;
}

.nav-menu > a:not(.button)::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 4px;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--teal-dark);
  transition: transform 180ms ease;
}

.nav-menu > a:not(.button):hover::after,
.nav-menu > a:not(.button):focus-visible::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  cursor: pointer;
}

.nav-toggle span:not(.sr-only) {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: var(--ink);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 750;
  line-height: 1.1;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--red);
  color: #fff;
  box-shadow: 0 12px 30px rgba(233, 87, 63, 0.28);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: #cf4935;
}

.button-outline {
  border-color: var(--line);
  background: var(--surface);
  color: var(--ink);
}

.button-ghost {
  border-color: rgba(255, 255, 255, 0.36);
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.button-small {
  min-height: 40px;
  padding-inline: 14px;
}

.hero {
  position: relative;
  min-height: calc(86svh - var(--header-height));
  display: grid;
  align-items: center;
  overflow: hidden;
  color: #fff;
  background: var(--navy);
}

.hero-media,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-media {
  background-image: url("../assets/img/hero-industrial-v2.png");
  background-position: center center;
  background-size: cover;
  transform: scale(1.01);
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(7, 13, 22, 0.93) 0%, rgba(7, 13, 22, 0.74) 39%, rgba(7, 13, 22, 0.2) 72%),
    linear-gradient(0deg, rgba(7, 13, 22, 0.34), rgba(7, 13, 22, 0.06));
}

.hero-content {
  position: relative;
  z-index: 1;
  padding-block: 70px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(2.35rem, 6vw, 4.9rem);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(1.9rem, 4vw, 3.2rem);
  line-height: 1.05;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 12px;
  font-size: 1.2rem;
  line-height: 1.2;
}

.hero-copy {
  max-width: 660px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 1.12rem;
}

.hero-actions,
.hero-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-actions {
  margin-top: 30px;
}

.hero-metrics {
  margin-top: 38px;
  max-width: 760px;
}

.hero-metrics span {
  display: inline-flex;
  align-items: center;
  min-height: 58px;
  padding: 12px 16px;
  border-left: 3px solid var(--teal);
  background: rgba(14, 27, 42, 0.62);
  color: rgba(255, 255, 255, 0.78);
}

.hero-metrics strong {
  margin-right: 6px;
  color: #fff;
}

.section {
  padding-block: 88px;
}

.section-heading {
  max-width: 790px;
  margin-bottom: 36px;
}

.section-heading p,
.feature-list,
.company-copy,
.contact-layout p,
.iot-layout p {
  color: var(--ink-soft);
  font-size: 1.03rem;
}

.services-section {
  background: var(--paper);
}

.applications-section {
  color: #fff;
  background: var(--navy);
}

.applications-section .section-heading p {
  color: rgba(255, 255, 255, 0.72);
}

.applications-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.application-card {
  position: relative;
  min-height: 390px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  background: var(--navy-2);
}

.application-card img {
  width: 100%;
  height: 100%;
  min-height: 390px;
  object-fit: cover;
  transition: transform 350ms ease;
}

.application-card:hover img {
  transform: scale(1.025);
}

.application-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(7, 13, 22, 0.94) 0%, rgba(7, 13, 22, 0.12) 68%);
}

.application-card > div {
  position: absolute;
  z-index: 1;
  right: 0;
  bottom: 0;
  left: 0;
  padding: 26px;
}

.application-card h3 {
  margin-bottom: 6px;
  font-size: 1.55rem;
}

.application-card p {
  max-width: 520px;
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.78);
}

.application-card .application-number {
  margin-bottom: 8px;
  color: var(--teal);
  font-size: 0.76rem;
  font-weight: 850;
}

.application-card:nth-child(3) img {
  object-position: center 30%;
}

.application-card:nth-child(4) img {
  object-position: center 52%;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.service-card {
  min-height: 280px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 10px 30px rgba(14, 27, 42, 0.06);
}

.service-card p {
  color: var(--ink-soft);
}

.service-icon {
  display: inline-grid;
  place-items: center;
  width: 50px;
  height: 50px;
  margin-bottom: 24px;
  border-radius: var(--radius);
  background: rgba(56, 198, 217, 0.14);
  color: var(--teal-dark);
  font-weight: 850;
}

.service-icon-hot {
  background: rgba(233, 87, 63, 0.12);
  color: var(--red);
}

.service-icon-data {
  background: rgba(185, 118, 53, 0.16);
  color: var(--copper);
}

.split-section,
.company-section {
  background: var(--section-surface);
}

.split-layout,
.contact-layout,
.company-layout,
.iot-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 56px;
  align-items: start;
}

.feature-list ul {
  display: grid;
  gap: 12px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  position: relative;
  padding-left: 26px;
}

.feature-list li::before {
  content: "";
  position: absolute;
  top: 0.65em;
  left: 0;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--red);
}

.iot-section {
  color: #fff;
  background:
    linear-gradient(135deg, rgba(14, 27, 42, 0.97), rgba(21, 38, 58, 0.96)),
    var(--navy);
}

.iot-section .section-heading p,
.iot-section p {
  color: rgba(255, 255, 255, 0.76);
}

.dashboard-preview {
  min-height: 360px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), var(--shadow);
}

.preview-top,
.gauge-row,
.footer-layout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.preview-top strong {
  color: #8bf0a5;
}

.gauge-row {
  margin-block: 28px;
}

.gauge {
  display: grid;
  place-items: center;
  width: 138px;
  aspect-ratio: 1;
  border: 10px solid rgba(56, 198, 217, 0.28);
  border-top-color: var(--teal);
  border-radius: 50%;
}

.gauge span {
  display: block;
  font-size: 1.55rem;
  font-weight: 850;
}

.gauge small {
  color: rgba(255, 255, 255, 0.68);
}

.gauge-alt {
  border-color: rgba(233, 87, 63, 0.2);
  border-top-color: var(--red);
}

.signal-bars {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  height: 74px;
  align-items: end;
}

.signal-bars span {
  display: block;
  min-height: 18px;
  border-radius: 4px 4px 0 0;
  background: linear-gradient(180deg, var(--teal), rgba(56, 198, 217, 0.22));
}

.signal-bars span:nth-child(2) { height: 48%; }
.signal-bars span:nth-child(3) { height: 72%; }
.signal-bars span:nth-child(4) { height: 42%; background: linear-gradient(180deg, var(--red), rgba(233, 87, 63, 0.22)); }
.signal-bars span:nth-child(5) { height: 88%; }
.signal-bars span:nth-child(6) { height: 62%; }

.future-tree {
  display: grid;
  gap: 10px;
  margin-top: 26px;
  color: rgba(255, 255, 255, 0.82);
}

.future-tree span {
  padding: 12px 14px;
  border-left: 3px solid var(--teal);
  background: rgba(255, 255, 255, 0.07);
}

.compact {
  margin-bottom: 0;
}

.contact-section {
  background: var(--paper);
}

.contact-panel {
  display: grid;
  gap: 16px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 10px 30px rgba(14, 27, 42, 0.06);
}

.contact-link {
  display: grid;
  gap: 4px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.contact-link span {
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.contact-link strong {
  overflow-wrap: anywhere;
  font-size: 1.2rem;
}

.portal-notice {
  margin: 0;
  padding: 12px 14px;
  border-left: 3px solid var(--teal-dark);
  background: rgba(56, 198, 217, 0.12);
}

.site-footer {
  padding-block: 28px;
  color: rgba(255, 255, 255, 0.74);
  background: var(--navy);
}

.site-footer p {
  margin: 4px 0 0;
}

.site-footer strong {
  color: #fff;
}

.footer-meta {
  display: grid;
  justify-items: end;
  gap: 6px;
  text-align: right;
}

[data-api-status] {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

[data-api-status]::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #a8b3c4;
}

[data-api-status][data-state="online"]::before {
  background: #75e6a0;
}

[data-api-status][data-state="degraded"]::before,
[data-api-status][data-state="offline"]::before {
  background: #f5b85b;
}

@media (max-width: 1040px) {
  .shell {
    width: min(100% - 30px, 680px);
  }

  .nav-toggle {
    display: block;
  }

  .nav-menu {
    position: absolute;
    top: var(--header-height);
    left: 15px;
    right: 15px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow);
  }

  .theme-switcher {
    align-self: flex-start;
    margin: 8px 12px;
  }

  .nav-menu.is-open {
    display: flex;
  }

  .nav-menu a {
    padding: 12px;
  }

  .hero {
    min-height: calc(82svh - var(--header-height));
  }

  .hero-media {
    background-position: 58% center;
  }

  .hero-overlay {
    background:
      linear-gradient(90deg, rgba(7, 13, 22, 0.94), rgba(7, 13, 22, 0.66)),
      linear-gradient(0deg, rgba(7, 13, 22, 0.42), rgba(7, 13, 22, 0.16));
  }

  .hero-content {
    padding-block: 56px;
  }

  .service-grid,
  .applications-grid,
  .split-layout,
  .contact-layout,
  .company-layout,
  .iot-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .section {
    padding-block: 64px;
  }

  .dashboard-preview {
    min-height: 0;
  }

  .application-card,
  .application-card img {
    min-height: 340px;
  }

  .gauge-row,
  .footer-layout {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-meta {
    justify-items: start;
    text-align: left;
  }
}

@media (max-width: 520px) {
  .brand small {
    display: none;
  }

  .hero-actions,
  .hero-actions .button {
    width: 100%;
  }

  .hero-metrics span {
    width: 100%;
  }

  .service-card,
  .contact-panel,
  .dashboard-preview {
    padding: 20px;
  }

  .gauge-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .gauge {
    width: 100%;
    max-width: 142px;
  }
}