:root {
  --color-bg: #333333;
  --color-bg-elevated: #252525;
  --color-surface: #1f1f1f;
  --color-surface-muted: #f5f5f5;
  --color-surface-soft: #fafafa;
  --color-accent: #ff8a3c;
  --color-accent-soft: #ffb56b;
  --color-text: #f5f5f5;
  --color-text-muted: #c2c2c2;
  --color-text-strong: #111111;
  --color-border-subtle: #444444;
  --color-border-soft: #dddddd;

  --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.35);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 999px;

  --header-height: 72px;
}

/* Base */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #444 0, var(--color-bg) 45%, #111 100%);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
}

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

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

button {
  font-family: inherit;
}

/* Layout helpers */

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 80px 0;
}

.section-muted {
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(0,0,0,0.25));
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(19, 19, 19, 0.94);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 16px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.9rem;
  text-decoration: none;
  white-space: nowrap;
  padding: 0;
  border: none;
  border-radius: 0;
  background: transparent;
}

.logo-img {
  height: 60px;
  width: auto;
  display: block;
}

.logo-text {
  line-height: 1;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-link {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  padding: 8px 4px;
  position: relative;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-soft));
  transition: width 160ms ease-out;
}

.nav-link:hover::after,
.nav-link-active::after {
  width: 100%;
}

.nav-link-active {
  color: var(--color-text);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Language toggle */

.lang-toggle {
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.03);
  padding: 4px 10px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

.lang-option {
  opacity: 0.6;
  transition: opacity 140ms ease-out, transform 140ms ease-out;
}

.lang-option.lang-active {
  opacity: 1;
  transform: translateY(-1px);
}

.lang-divider {
  opacity: 0.4;
}

/* Hero */

.hero {
  padding-top: 72px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.2fr);
  gap: 48px;
  align-items: center;
}

.hero-title {
  font-family: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: clamp(2.1rem, 3.4vw, 2.8rem);
  line-height: 1.1;
  margin: 0 0 16px;
}

.hero-subtitle {
  margin: 0 0 24px;
  color: var(--color-text-muted);
  font-size: 1rem;
  max-width: 32rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.hero-meta {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.78rem;
  color: var(--color-accent-soft);
  margin-bottom: 10px;
}

/* Buttons */

.btn {
  border-radius: var(--radius-sm);
  padding: 10px 18px;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 120ms ease-out, box-shadow 120ms ease-out, background 120ms ease-out, border-color 120ms ease-out;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-soft));
  color: #271100;
  font-weight: 600;
  box-shadow: 0 12px 30px rgba(0,0,0,0.4);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(0,0,0,0.45);
}

.btn-ghost {
  background: rgba(255,255,255,0.02);
  border-color: rgba(255,255,255,0.14);
  color: var(--color-text);
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.06);
}

.btn-full {
  width: 100%;
}

/* Hero visual card */

.hero-visual {
  display: flex;
  justify-content: flex-end;
}

.hero-card {
  width: 100%;
  max-width: 420px;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at top left, rgba(255,138,60,0.18), rgba(0,0,0,0.9));
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 18px 18px 16px;
}

.hero-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.hero-chip {
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(14, 255, 180, 0.08);
  border: 1px solid rgba(14,255,180,0.3);
  color: #97ffe2;
}

.hero-status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #12ff9b;
  box-shadow: 0 0 0 6px rgba(18,255,155,0.14);
}

.hero-card-body {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.4fr);
  gap: 16px;
  align-items: center;
  margin-bottom: 12px;
}

.hero-metric {
  margin-bottom: 8px;
}

.metric-label {
  font-size: 0.74rem;
  color: rgba(255,255,255,0.7);
}

.metric-value {
  display: block;
  font-size: 1.7rem;
  font-weight: 600;
  margin-top: 2px;
}

.metric-unit {
  font-size: 1rem;
  opacity: 0.8;
}

.metric-good {
  color: #7bffb7;
}

.hero-stream {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stream-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 8px;
  align-items: center;
  font-size: 0.8rem;
}

.stream-label {
  color: rgba(255,255,255,0.7);
}

.stream-bar {
  position: relative;
  height: 6px;
  border-radius: 999px;
  background: rgba(255,255,255,0.12);
  overflow: hidden;
}

.stream-fill {
  position: absolute;
  inset: 0;
  transform-origin: left;
  transform: scaleX(0.85);
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-soft));
}

.stream-fill-soft {
  transform: scaleX(0.6);
  opacity: 0.85;
}

.stream-value {
  font-variant-numeric: tabular-nums;
  font-size: 0.8rem;
}

.hero-card-footer {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 10px;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.7);
}

/* Sections */

.section-header {
  text-align: left;
  max-width: 640px;
}

.section-header h2 {
  margin: 0 0 12px;
  font-family: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.section-desc {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.98rem;
}

/* Cards */

.cards-grid {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.cards-grid-wide {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  background: rgba(14,14,14,0.96);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.06);
  padding: 22px 22px 20px;
  box-shadow: 0 16px 32px rgba(0,0,0,0.45);
}

.card h3,
.card h2 {
  margin-top: 0;
  margin-bottom: 10px;
  font-family: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1.15rem;
}

.card p {
  margin-top: 0;
  margin-bottom: 14px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.card-list {
  list-style: none;
  padding: 0;
  margin: 0 0 14px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.card-list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 6px;
}

.card-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--color-accent);
}

.card-link {
  font-size: 0.9rem;
  color: var(--color-accent-soft);
}

/* Services on home */

.services-grid {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.service-card {
  background: rgba(14,14,14,0.96);
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.05);
  padding: 18px 18px 16px;
  font-size: 0.95rem;
}

.service-card h3 {
  margin-top: 0;
  margin-bottom: 8px;
  font-family: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
}

.service-card p {
  margin: 0;
  color: var(--color-text-muted);
}

/* Contact */

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1.2fr);
  gap: 40px;
  align-items: flex-start;
}

.contact-meta p {
  margin: 4px 0;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.contact-form {
  background: white;
  border-radius: 18px;
  padding: 20px 18px 18px;
  box-shadow: 0 18px 42px rgba(0,0,0,0.4);
  color: var(--color-text-strong);
}

.form-row {
  margin-bottom: 14px;
}

.form-row label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  margin-bottom: 4px;
}

.form-row input,
.form-row textarea {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--color-border-soft);
  padding: 8px 10px;
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
  transition: border-color 140ms ease-out, box-shadow 140ms ease-out;
}

.form-row input:focus,
.form-row textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px rgba(255,138,60,0.6);
}

.form-hint {
  margin-top: 8px;
  font-size: 0.8rem;
  color: #666666;
}

/* Page hero */

.page-hero {
  padding-top: 72px;
}

.page-hero-inner {
  max-width: 640px;
}

/* Services page layout */

.service-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.6fr);
  gap: 32px;
}

.service-sidebar {
  background: rgba(14,14,14,0.96);
  border-radius: 18px;
  padding: 18px 18px 16px;
  border: 1px solid rgba(255,255,255,0.06);
}

.service-sidebar h2 {
  margin-top: 0;
  margin-bottom: 10px;
  font-family: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1.05rem;
}

.service-sidebar-list {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.service-sidebar-list li {
  margin-bottom: 6px;
}

.service-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.service-detail {
  background: rgba(14,14,14,0.96);
  border-radius: 18px;
  padding: 18px 18px 16px;
  border: 1px solid rgba(255,255,255,0.04);
}

.service-detail h2 {
  margin-top: 0;
  margin-bottom: 8px;
  font-family: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1.1rem;
}

.service-detail p {
  margin-top: 0;
  margin-bottom: 6px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* Products page specifics */

.split-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1.1fr);
  gap: 32px;
  align-items: center;
}

.split-text p {
  color: var(--color-text-muted);
  font-size: 0.96rem;
}

.timeline {
  background: rgba(14,14,14,0.96);
  border-radius: 18px;
  padding: 18px 18px 16px;
  border: 1px solid rgba(255,255,255,0.06);
}

.timeline-item {
  padding: 10px 0;
  border-bottom: 1px dashed rgba(255,255,255,0.08);
}

.timeline-item:last-child {
  border-bottom: none;
}

.timeline-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent-soft);
}

.timeline-item p {
  margin: 4px 0 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* Footer */

.site-footer {
  border-top: 1px solid rgba(255,255,255,0.06);
  background: #141414;
  padding: 18px 0;
  font-size: 0.85rem;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.footer-logo {
  font-weight: 500;
  margin-right: 8px;
}

.footer-meta {
  color: var(--color-text-muted);
}

.footer-right {
  display: flex;
  gap: 16px;
}

.footer-link {
  color: var(--color-text-muted);
}

/* Metrics section and charts */

.metrics-section {
  padding-top: 56px;
}

.metrics-grid {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.metrics-card {
  background: rgba(14,14,14,0.96);
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.06);
  padding: 18px 18px 16px;
  box-shadow: 0 16px 32px rgba(0,0,0,0.45);
  font-size: 0.9rem;
}

.metrics-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}

.metrics-card-header h3 {
  margin: 0;
  font-family: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
}

.metrics-tag {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.18);
  color: rgba(255,255,255,0.85);
}

.metrics-tag-soft {
  border-color: rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.03);
}

.chart-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
}

.chart-row-small {
  margin-bottom: 6px;
}

.chart-row-label {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.8);
}

.chart-row-value {
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  color: rgba(255,255,255,0.9);
}

.chart-bar {
  position: relative;
  height: 7px;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  overflow: hidden;
}

.chart-bar-thin {
  height: 5px;
}

.chart-bar-fill {
  position: absolute;
  inset: 0;
  transform-origin: left;
  transform: scaleX(0);
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-soft));
  transition: transform 340ms ease-out;
}

/* animate when reveal is visible */
.reveal.is-visible .chart-bar-fill {
  transform: scaleX(var(--value, 0.8));
}

.metrics-footnote {
  margin-top: 10px;
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.chart-stack {
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.chart-stack-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px;
  align-items: center;
}

.chart-stack-label {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.8);
}

.chart-stack-bar {
  display: flex;
  height: 10px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255,255,255,0.08);
}

.chart-stack-segment {
  height: 100%;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 340ms ease-out;
}

.chart-stack-segment-hot {
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-soft));
}

.chart-stack-segment-warm {
  background: rgba(255,192,120,0.95);
}

.chart-stack-segment-idle {
  background: rgba(255,255,255,0.16);
}

/* animate segments when card becomes visible */
.reveal.is-visible .chart-stack-segment {
  transform: scaleX(var(--value, 0.3));
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin-top: 10px;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.8);
}

.chart-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.chart-legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.chart-legend-dot-hot {
  background: var(--color-accent);
}

.chart-legend-dot-warm {
  background: rgba(255,192,120,0.95);
}

.chart-legend-dot-idle {
  background: rgba(255,255,255,0.35);
}


/* Reveal animation */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 260ms ease-out, transform 260ms ease-out;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (min-width: 1280px) {
  .container {
    max-width: 1200px;
  }

  .hero-grid {
    gap: 64px;
  }

  .hero-title {
    font-size: clamp(2.4rem, 3vw, 3.1rem);
  }

  .hero-card {
    max-width: 460px;
  }
}


/* Responsive */

@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-visual {
    justify-content: flex-start;
  }

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

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

  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .service-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .split-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .metrics-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

}

@media (max-width: 720px) {
  .header-inner {
    flex-wrap: wrap;
    justify-content: space-between;
  }

  .main-nav {
    order: 3;
    width: 100%;
    justify-content: center;
    margin-top: 8px;
  }

  .cards-grid,
  .cards-grid-wide {
    grid-template-columns: minmax(0, 1fr);
  }

  .services-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .metrics-grid {
    grid-template-columns: minmax(0, 1fr);
  }

}

@media (max-width: 480px) {
  .section {
    padding: 56px 0;
  }

  .hero {
    padding-top: 56px;
  }

  .hero-title {
    font-size: 1.9rem;
  }

  .hero-subtitle {
    font-size: 0.95rem;
  }

  .header-inner {
    gap: 8px;
  }

  .logo {
    padding: 6px 10px;
  }

  .main-nav {
    gap: 12px;
    font-size: 0.9rem;
  }

  .hero-card {
    padding: 16px 14px 14px;
  }
}