/* ==========================================================================
   ORBITAL — shared design tokens & shell
   Single source of truth for colour, type, spacing, radius, elevation.
   ========================================================================== */

:root {
  color-scheme: dark;

  /* Colour */
  --color-background: #06070a;
  --color-surface: #0e1117;
  --color-surface-2: #141922;
  --color-text: #eef2f7;
  --color-muted-text: #98a3b3;
  --color-border: #212834;
  --color-primary: #4ce0c8;
  --color-primary-dim: #2bb8a3;
  --color-primary-ink: #04231f;
  --color-focus: #6ff3dc;
  --color-accent-warm: #ff7a45;
  --color-danger: #ff6b6b;

  /* Type */
  --font-body: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-display: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", sans-serif;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1.25rem;

  /* Space */
  --space-unit: 0.25rem;
  --content-width: 78rem;
  --reading-width: 46rem;

  /* Elevation */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 18px 40px -24px rgba(0, 0, 0, 0.9);
  --shadow-glow: 0 0 0 1px rgba(76, 224, 200, 0.28), 0 24px 60px -30px rgba(76, 224, 200, 0.35);

  /* Motion */
  --duration-fast: 140ms;
  --duration-base: 240ms;
  --ease-standard: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-body);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-size: 1rem;
  line-height: 1.65;
  overflow-x: hidden;
  background-image: radial-gradient(
      120% 60% at 12% -10%,
      rgba(76, 224, 200, 0.1),
      transparent 60%
    ),
    radial-gradient(90% 50% at 100% 0%, rgba(84, 116, 255, 0.08), transparent 55%);
  background-repeat: no-repeat;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  color: var(--color-focus);
}

p a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 0.6em;
  font-weight: 640;
}

h1 {
  font-size: clamp(2.2rem, 5.2vw, 3.4rem);
  letter-spacing: -0.035em;
}

h2 {
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
}

h3 {
  font-size: 1.25rem;
}

h4 {
  font-size: 1.0625rem;
}

p {
  margin: 0 0 1rem;
}

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.skip-link {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  left: 1rem;
  padding: 0.6rem 1rem;
  position: fixed;
  top: 1rem;
  transform: translateY(-220%);
  transition: transform var(--duration-fast) var(--ease-standard);
  z-index: 200;
}

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

/* ---------- layout ---------- */

.container {
  margin: 0 auto;
  max-width: var(--content-width);
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
  width: 100%;
}

.container--narrow {
  max-width: 62rem;
}

.section {
  padding-block: clamp(3.5rem, 8vw, 7rem);
  position: relative;
}

.section--tight {
  padding-block: clamp(2.5rem, 5vw, 4rem);
}

.section--surface {
  background: var(--color-surface);
  border-block: 1px solid var(--color-border);
}

.section-head {
  margin-bottom: clamp(1.75rem, 4vw, 3rem);
  max-width: 52rem;
}

.section-head p {
  color: var(--color-muted-text);
  font-size: 1.0625rem;
  margin: 0;
}

.eyebrow {
  color: var(--color-primary);
  display: block;
  font-size: 0.75rem;
  font-weight: 620;
  letter-spacing: 0.18em;
  margin-bottom: 0.85rem;
  text-transform: uppercase;
}

.lead {
  color: var(--color-muted-text);
  font-size: clamp(1.0625rem, 1.6vw, 1.25rem);
  max-width: var(--reading-width);
}

.grid {
  display: grid;
  gap: clamp(1rem, 2.2vw, 1.75rem);
}

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

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

.grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid--split {
  align-items: center;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
}

/* ---------- orbit ring signature ---------- */

.orbit-motif {
  inset: 0;
  pointer-events: none;
  position: absolute;
  z-index: 0;
}

.orbit-motif span {
  border: 1px solid rgba(76, 224, 200, 0.22);
  border-radius: 50%;
  display: block;
  left: 50%;
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%) rotate(-18deg);
}

.orbit-motif span:nth-child(1) {
  height: 34rem;
  width: 60rem;
}

.orbit-motif span:nth-child(2) {
  border-color: rgba(120, 152, 255, 0.16);
  height: 46rem;
  width: 78rem;
  transform: translate(-50%, -50%) rotate(12deg);
}

.orbit-motif span:nth-child(3) {
  border-color: rgba(76, 224, 200, 0.1);
  height: 60rem;
  width: 96rem;
  transform: translate(-50%, -50%) rotate(-6deg);
}

.orbit-node {
  background: var(--color-primary);
  border-radius: 50%;
  box-shadow: 0 0 0 6px rgba(76, 224, 200, 0.14);
  height: 6px;
  width: 6px;
}

/* ---------- header / nav ---------- */

.site-header {
  backdrop-filter: blur(14px);
  background: rgba(6, 7, 10, 0.82);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header__inner {
  align-items: center;
  display: flex;
  gap: 1.5rem;
  justify-content: space-between;
  min-height: 4.25rem;
}

.brand {
  align-items: center;
  color: var(--color-text);
  display: inline-flex;
  gap: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  font-size: 0.95rem;
}

.brand:hover {
  color: var(--color-text);
}

.brand__mark {
  align-items: center;
  border: 1.5px solid var(--color-primary);
  border-radius: 50%;
  display: inline-flex;
  height: 1.55rem;
  justify-content: center;
  position: relative;
  width: 1.55rem;
}

.brand__mark::after {
  background: var(--color-primary);
  border-radius: 50%;
  content: "";
  height: 0.4rem;
  width: 0.4rem;
}

.brand__mark::before {
  border: 1px solid rgba(76, 224, 200, 0.55);
  border-radius: 50%;
  content: "";
  height: 1.05rem;
  position: absolute;
  transform: rotate(-32deg) scaleX(1.5);
  width: 0.5rem;
}

.site-nav {
  align-items: center;
  display: flex;
  gap: 0.35rem;
}

.site-nav a {
  border-radius: var(--radius-sm);
  color: var(--color-muted-text);
  font-size: 0.9375rem;
  padding: 0.5rem 0.8rem;
  transition: color var(--duration-fast) var(--ease-standard),
    background-color var(--duration-fast) var(--ease-standard);
}

.site-nav a:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
}

.site-nav a[aria-current="page"] {
  color: var(--color-text);
  background: var(--color-surface-2);
}

.header-actions {
  align-items: center;
  display: flex;
  gap: 0.75rem;
}

.nav-toggle {
  align-items: center;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  cursor: pointer;
  display: none;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
}

.nav-toggle__bars {
  display: inline-block;
  height: 10px;
  position: relative;
  width: 16px;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  background: currentColor;
  border-radius: 1px;
  content: "";
  height: 1.5px;
  left: 0;
  position: absolute;
  width: 100%;
}

.nav-toggle__bars::before {
  top: 1px;
}

.nav-toggle__bars::after {
  bottom: 1px;
}

/* ---------- buttons ---------- */

.btn {
  align-items: center;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  font-size: 0.9375rem;
  font-weight: 600;
  gap: 0.5rem;
  justify-content: center;
  padding: 0.7rem 1.15rem;
  transition: background-color var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    color var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}

.btn:active {
  transform: translateY(1px);
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-primary-ink);
}

.btn--primary:hover {
  background: var(--color-focus);
  color: var(--color-primary-ink);
}

.btn--ghost {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn--ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

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

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.mt-sm {
  margin-top: 1.25rem;
}

.mt-md {
  margin-top: 1.75rem;
}

/* ---------- hero ---------- */

.hero {
  overflow: hidden;
  padding-block: clamp(3.5rem, 9vw, 7.5rem);
  position: relative;
}

.hero__inner {
  position: relative;
  z-index: 1;
}

.hero h1 {
  max-width: 20ch;
}

.hero .lead {
  margin-top: 0.35rem;
}

.hero__actions {
  margin-top: 1.75rem;
}

.hero__meta {
  border-top: 1px solid var(--color-border);
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: clamp(2.5rem, 5vw, 4rem);
  padding-top: 1.5rem;
}

/* ---------- stats ---------- */

.stat__value {
  color: var(--color-text);
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.15rem);
  font-weight: 660;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.stat__value em {
  color: var(--color-primary);
  font-style: normal;
}

.stat__label {
  color: var(--color-muted-text);
  display: block;
  font-size: 0.8125rem;
  margin-top: 0.35rem;
}

/* ---------- cards ---------- */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: border-color var(--duration-base) var(--ease-standard),
    transform var(--duration-base) var(--ease-standard);
}

.card:hover {
  border-color: rgba(76, 224, 200, 0.45);
  transform: translateY(-2px);
}

.card__media {
  aspect-ratio: 16 / 10;
  background: var(--color-surface-2);
  overflow: hidden;
}

.card__media img {
  height: 100%;
  object-fit: cover;
  width: 100%;
}

.card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem;
}

.card__body p {
  color: var(--color-muted-text);
  font-size: 0.9375rem;
  margin: 0;
}

.card__tag {
  color: var(--color-primary);
  font-size: 0.6875rem;
  font-weight: 640;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.card__foot {
  color: var(--color-text);
  font-size: 0.875rem;
  font-weight: 600;
  margin-top: auto;
  padding-top: 0.75rem;
}

.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: clamp(1.25rem, 2.5vw, 1.75rem);
}

.panel--glow {
  box-shadow: var(--shadow-glow);
}

.panel h3 {
  margin-bottom: 0.4rem;
}

.panel p {
  color: var(--color-muted-text);
  font-size: 0.9375rem;
  margin: 0;
}

.list-check {
  display: grid;
  gap: 0.55rem;
  list-style: none;
  margin: 0.9rem 0 0;
  padding: 0;
}

.list-check li {
  color: var(--color-muted-text);
  font-size: 0.9375rem;
  padding-left: 1.4rem;
  position: relative;
}

.list-check li::before {
  color: var(--color-primary);
  content: "◆";
  font-size: 0.6rem;
  left: 0;
  position: absolute;
  top: 0.35rem;
}

/* ---------- spec table ---------- */

.table-scroll {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow-x: auto;
}

table.spec {
  border-collapse: collapse;
  min-width: 44rem;
  width: 100%;
}

table.spec caption {
  color: var(--color-muted-text);
  font-size: 0.8125rem;
  padding: 0.85rem 1rem;
  text-align: left;
}

table.spec th,
table.spec td {
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9375rem;
  padding: 0.8rem 1rem;
  text-align: left;
  vertical-align: top;
}

table.spec thead th {
  background: var(--color-surface-2);
  color: var(--color-muted-text);
  font-size: 0.75rem;
  font-weight: 640;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

table.spec tbody th {
  color: var(--color-text);
  font-weight: 560;
  width: 15rem;
}

table.spec tbody td {
  color: var(--color-muted-text);
}

table.spec tr:last-child th,
table.spec tr:last-child td {
  border-bottom: 0;
}

/* ---------- media plate (product art) ---------- */

.media-plate {
  background: radial-gradient(80% 80% at 50% 40%, #172029, #0b0f14 70%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.media-plate img {
  height: auto;
  width: 100%;
}

/* ---------- forms ---------- */

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

.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.field--full {
  grid-column: 1 / -1;
}

.field label {
  color: var(--color-text);
  font-size: 0.875rem;
  font-weight: 560;
}

.field .hint {
  color: var(--color-muted-text);
  font-size: 0.75rem;
}

.field input,
.field select,
.field textarea {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  padding: 0.65rem 0.8rem;
  width: 100%;
}

.field textarea {
  min-height: 8rem;
  resize: vertical;
}

.field input::placeholder,
.field textarea::placeholder {
  color: #6c7686;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--color-primary);
}

.field[data-invalid="true"] input,
.field[data-invalid="true"] select,
.field[data-invalid="true"] textarea {
  border-color: var(--color-danger);
}

.field__error {
  color: var(--color-danger);
  display: none;
  font-size: 0.8125rem;
}

.field[data-invalid="true"] .field__error {
  display: block;
}

.form-status {
  border-radius: var(--radius-sm);
  display: none;
  font-size: 0.9375rem;
  margin-top: 1rem;
  padding: 0.8rem 1rem;
}

.form-status[data-state="error"] {
  background: rgba(255, 107, 107, 0.12);
  border: 1px solid rgba(255, 107, 107, 0.45);
  color: #ffc9c9;
  display: block;
}

.form-status[data-state="complete"] {
  background: rgba(76, 224, 200, 0.12);
  border: 1px solid rgba(76, 224, 200, 0.45);
  color: var(--color-focus);
  display: block;
}

/* ---------- footer ---------- */

.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  margin-top: clamp(2rem, 5vw, 4rem);
  padding-block: clamp(2.5rem, 5vw, 3.5rem) 1.5rem;
}

.footer-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 1fr));
}

.footer-grid h2 {
  color: var(--color-text);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  margin-bottom: 0.85rem;
  text-transform: uppercase;
}

.footer-grid ul {
  display: grid;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-grid a {
  color: var(--color-muted-text);
  font-size: 0.9375rem;
}

.footer-grid a:hover {
  color: var(--color-primary);
}

.footer-brand p {
  color: var(--color-muted-text);
  font-size: 0.9375rem;
  max-width: 30rem;
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  color: var(--color-muted-text);
  display: flex;
  flex-wrap: wrap;
  font-size: 0.8125rem;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
  margin-top: 2.5rem;
  padding-top: 1.25rem;
}

/* ---------- cta band ---------- */

.cta-band {
  background: linear-gradient(120deg, rgba(76, 224, 200, 0.14), rgba(84, 116, 255, 0.12));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  padding: clamp(1.75rem, 4vw, 3rem);
  position: relative;
}

.cta-band h2 {
  max-width: 28ch;
}

.cta-band p {
  color: var(--color-muted-text);
  max-width: 46rem;
}

/* ---------- reveal on scroll ---------- */

.js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 520ms var(--ease-standard), transform 520ms var(--ease-standard);
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- responsive ---------- */

@media (max-width: 1100px) {
  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 900px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    display: none;
    flex-direction: column;
    gap: 0.15rem;
    left: 0;
    padding: 0.75rem clamp(1.25rem, 4vw, 2.5rem) 1.25rem;
    position: absolute;
    right: 0;
    top: 100%;
  }

  .site-nav[data-open="true"] {
    display: flex;
  }

  .site-nav a {
    padding: 0.7rem 0.6rem;
    width: 100%;
  }

  .grid--2,
  .grid--3,
  .grid--4,
  .grid--split,
  .form-grid {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .header-actions .btn {
    display: none;
  }
}

@media (max-width: 560px) {
  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
  }

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

@media print {
  .site-header,
  .site-footer,
  .orbit-motif {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
  }

  a {
    color: #000;
    text-decoration: underline;
  }
}