/* =========================================================================
   NEXUS GRID — Style Layer
   Tokens mapped 1:1 from DESIGN.md (Elektron — dark hardware control panel).
   Primitives -> Semantics -> Components. No invented colors, fonts or scales.
   ========================================================================= */

/* ---- Fonts (DESIGN.md substitutes) ----
   Neue Haas Grotesk -> Inter (free tier substitute named in DESIGN.md)
   digi one v2        -> VT323 (LCD dot-matrix effect substitute) */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500&family=VT323&display=swap");

/* =========================================================================
   1. PRIMITIVE + SEMANTIC TOKENS
   ========================================================================= */
:root {
  /* Colors */
  --color-page-canvas: #222222;
  --color-deep-surface: #151515;
  --color-void: #000000;
  --color-platinum: #eeeef2;
  --color-pure-white: #ffffff;
  --color-iron: #333337;
  --color-ash: #b4b4b8;

  /* The single chromatic accent permitted by DESIGN.md
     (Section Display Heading red/coral underline rule, ~#e63946). */
  --color-accent: #e63946;

  /* Typography — Font Families */
  --font-text: 'Inter', 'Neue Haas Grotesk Text Pro', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: 'Inter', 'Neue Haas Grotesk Display Pro', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-dot-matrix: 'VT323', 'digi one v2', ui-monospace, monospace;

  /* Typography — Weights */
  --fw-regular: 400;
  --fw-450: 450;
  --fw-medium: 500;

  /* Typography — Scale (size / line-height / letter-spacing) */
  --text-caption: 11px;        --leading-caption: 1.5;     --tracking-caption: 0.46px;
  --text-body-sm: 14px;        --leading-body-sm: 1.5;     --tracking-body-sm: 0.56px;
  --text-body: 16px;           --leading-body: 1.2;        --tracking-body: 0.42px;
  --text-subheading: 18px;     --leading-subheading: 1.5;  --tracking-subheading: 0.31px;
  --text-heading-sm: 24px;     --leading-heading-sm: 1.33; --tracking-heading-sm: 0.96px;
  --text-heading: 31px;        --leading-heading: 1.5;     --tracking-heading: 1.24px;
  --text-heading-lg: 35px;     --leading-heading-lg: 1.2;  --tracking-heading-lg: 0.46px;
  --text-display: 64px;        --leading-display: 0.95;    --tracking-display: -0.64px;

  /* Spacing — 4px base, compact density */
  --spacing-4: 4px;
  --spacing-12: 12px;
  --spacing-16: 16px;
  --spacing-28: 28px;
  --spacing-60: 60px;
  --section-gap: 80px;
  --card-padding: 21px;

  /* Layout */
  --page-max-width: 1280px;

  /* Border Radius — 0 everywhere except inputs */
  --radius-tags: 0px;
  --radius-cards: 0px;
  --radius-icons: 0px;
  --radius-buttons: 0px;
  --radius-inputs: 7px;

  /* Surfaces */
  --surface-canvas: #222222;
  --surface-void: #000000;
  --surface-surface: #151515;
  --surface-input: #333337;
  --surface-text: #eeeef2;
}

/* =========================================================================
   2. RESET / BASE
   ========================================================================= */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background-color: var(--color-page-canvas);
  color: var(--color-platinum);
  font-family: var(--font-text);
  font-weight: var(--fw-regular);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  letter-spacing: var(--tracking-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--color-platinum); text-decoration: none; }
a:hover { color: var(--color-pure-white); }

p { margin: 0 0 var(--spacing-16); }

/* Visible, monochrome focus target (ui-ux-pro-max: focus-visible) */
:focus-visible {
  outline: 2px solid var(--color-platinum);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-void);
  color: var(--color-platinum);
  padding: var(--spacing-12) var(--spacing-16);
  z-index: 10000;
}
.skip-link:focus { left: var(--spacing-12); }

/* =========================================================================
   3. LAYOUT
   ========================================================================= */
.wrap {
  width: 100%;
  max-width: var(--page-max-width);
  margin-inline: auto;
  padding-inline: var(--spacing-16);
}

/* Light-surface band reads as a wider container per the brief's
   "container is wider in the light-themed version" directive. */
.wrap--wide { max-width: 1440px; }

.section { padding-block: var(--section-gap); }
.section--tight { padding-block: var(--spacing-60); }

.stack > * + * { margin-top: var(--spacing-16); }

/* Decorative full-bleed page backgrounds (bg-1/2/3.webp).
   Cover ambiance behind the dark canvas; content sits on solid surfaces. */
.page-bg {
  position: relative;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}
.page-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-color: rgba(34, 34, 34, 0.62); /* lighter wash so bg-2/bg-3 show through */
  pointer-events: none;
}
.page-bg > * { position: relative; z-index: 1; }

.bg-portal  { background-image: url("../img/bg-1.webp"); }
.bg-archive { background-image: url("../img/bg-2.webp"); }
.bg-comms   { background-image: url("../img/bg-3.webp"); }

/* =========================================================================
   4. TYPOGRAPHY HELPERS
   ========================================================================= */
.display {
  font-family: var(--font-display);
  font-weight: var(--fw-450);
  font-size: var(--text-display);
  line-height: var(--leading-display);
  letter-spacing: var(--tracking-display);
  margin: 0;
}
@media (max-width: 720px) {
  .display { font-size: 40px; }
}

.heading {
  font-family: var(--font-display);
  font-weight: var(--fw-450);
  font-size: var(--text-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  margin: 0;
}

.heading-lg {
  font-family: var(--font-display);
  font-weight: var(--fw-medium);
  font-size: var(--text-heading-lg);
  line-height: var(--leading-heading-lg);
  letter-spacing: var(--tracking-heading-lg);
  margin: 0;
}

.heading-sm {
  font-family: var(--font-display);
  font-weight: var(--fw-450);
  font-size: var(--text-heading-sm);
  line-height: var(--leading-heading-sm);
  letter-spacing: var(--tracking-heading-sm);
  margin: 0;
}

.subheading {
  font-size: var(--text-subheading);
  line-height: var(--leading-subheading);
  letter-spacing: var(--tracking-subheading);
  margin: 0;
}

.body-sm {
  font-size: var(--text-body-sm);
  line-height: var(--leading-body-sm);
  letter-spacing: var(--tracking-body-sm);
}

.caption {
  font-size: var(--text-caption);
  line-height: var(--leading-caption);
  letter-spacing: var(--tracking-caption);
}

.uppercase { text-transform: uppercase; }
.text-platinum { color: var(--color-platinum); }
.muted { color: var(--color-ash); }

/* Uppercase utility label (24-31px display, 0.04em) per DESIGN.md */
.util-label {
  font-family: var(--font-display);
  font-weight: var(--fw-450);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Dot-matrix signature tag — used sparingly (2-3 per screen max) */
.dot-matrix {
  font-family: var(--font-dot-matrix);
  font-size: var(--text-body-sm);
  line-height: var(--leading-body-sm);
  letter-spacing: 0.033em;
  color: var(--color-platinum);
}

/* The lone chromatic accent: 80px x 4px coral rule */
.accent-rule {
  width: 80px;
  height: 4px;
  background-color: var(--color-accent);
  border: 0;
  margin: 0 0 var(--spacing-16);
}

/* =========================================================================
   5. TOP NAVIGATION
   ========================================================================= */
.nav {
  background-color: var(--color-page-canvas);
  border-bottom: 1px solid var(--color-deep-surface);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-16);
  min-height: 64px;
}
.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-12);
}
.nav__brand img { height: 28px; width: auto; }
.nav__brand-name {
  font-family: var(--font-display);
  font-weight: var(--fw-medium);
  font-size: var(--text-subheading);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--spacing-28);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav__links a {
  font-size: var(--text-body-sm);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.nav__links a[aria-current="page"] { color: var(--color-pure-white); }
.nav__toggle {
  display: none;
  background: var(--color-void);
  color: var(--color-platinum);
  border: 1px solid var(--color-platinum);
  width: 40px; height: 40px;
  border-radius: var(--radius-buttons);
  cursor: pointer;
}

@media (max-width: 860px) {
  .nav__links {
    display: none;
    position: absolute;
    left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--color-deep-surface);
    padding: var(--spacing-12) var(--spacing-16);
    z-index: 50;
  }
  .nav__links.is-open { display: flex; }
  .nav__links li { padding: var(--spacing-12) 0; border-bottom: 1px solid var(--color-iron); }
  .nav { position: relative; }
  .nav__toggle { display: inline-flex; align-items: center; justify-content: center; }
}

/* =========================================================================
   6. BUTTONS  (Outlined Ghost / Filled Dark — DESIGN.md spec)
   ========================================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-4);
  font-family: var(--font-display);
  font-weight: var(--fw-regular);
  font-size: var(--text-body);
  line-height: 1;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: var(--radius-buttons);
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
}

/* Outlined Ghost — primary CTA. Invert on hover (no fill colors). */
.btn--ghost {
  border: 1px solid var(--color-platinum);
  background: transparent;
  color: var(--color-platinum);
  padding: 11px 24px;
}
.btn--ghost:hover,
.btn--ghost:focus-visible {
  background: var(--color-platinum);
  color: var(--color-page-canvas);
}

/* Filled Dark — secondary. */
.btn--dark {
  border: 1px solid var(--color-platinum);
  background: var(--color-void);
  color: var(--color-platinum);
  padding: 11px 24px;
}
.btn--dark:hover,
.btn--dark:focus-visible {
  background: var(--color-platinum);
  color: var(--color-page-canvas);
}

/* Ghost text link "[ ACCESS DATACRON ]" */
.ghost-link {
  font-family: var(--font-display);
  font-weight: var(--fw-450);
  font-size: var(--text-body-sm);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  display: inline-block;
}
.ghost-link:hover { color: var(--color-pure-white); }

/* =========================================================================
   7. CARDS / SURFACES
   ========================================================================= */
.card {
  background-color: var(--color-deep-surface);
  border: 1px solid var(--color-iron);
  border-radius: var(--radius-cards);
  padding: var(--card-padding);
}
.card--flat { border-color: transparent; }

/* Media — images stay naturally responsive: full width, height follows the
   image's own aspect ratio, so nothing is cropped or letterboxed. */
.media {
  width: 100%;
  border-radius: 0;
  overflow: hidden;
}
.media img {
  display: block;
  width: 100%;
  height: auto;
}

/* Grid utilities */
.grid { display: grid; gap: var(--spacing-28); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 980px) { .grid--3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 680px) {
  .grid--2, .grid--3 { grid-template-columns: 1fr; }
}

/* =========================================================================
   8. HERO (Portal Gateway)
   ========================================================================= */
.hero {
  padding-block: 120px;
  min-height: 88vh;
  display: flex;
  align-items: center;
}
/* Let bg-1 show through far more on the hero than on standard bands.
   A left-weighted gradient keeps the headline legible over the image. */
.hero.page-bg::before {
  background: linear-gradient(
    90deg,
    rgba(21, 21, 21, 0.82) 0%,
    rgba(34, 34, 34, 0.55) 45%,
    rgba(34, 34, 34, 0.28) 100%
  );
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--spacing-60);
  align-items: center;
  width: 100%;
}
@media (max-width: 900px) {
  .hero { min-height: auto; padding-block: var(--section-gap); }
  .hero.page-bg::before {
    background: rgba(34, 34, 34, 0.72);
  }
}
@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; gap: var(--spacing-28); }
}
.hero__cta { display: flex; gap: var(--spacing-16); flex-wrap: wrap; margin-top: var(--spacing-28); }

/* =========================================================================
   9. POWER LEVEL (Score System)
   ========================================================================= */
.power {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-12);
}
.power__value {
  font-family: var(--font-display);
  font-weight: var(--fw-medium);
  font-size: var(--text-display);
  line-height: var(--leading-display);
  letter-spacing: var(--tracking-display);
  color: var(--color-platinum);
}
.power__max { color: var(--color-ash); font-size: var(--text-heading-sm); }
.power__label {
  font-family: var(--font-dot-matrix);
  letter-spacing: 0.033em;
  color: var(--color-accent);
  font-size: var(--text-body-sm);
}

/* Sub-metric readouts */
.metrics { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--spacing-12); }
.metrics li {
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-16);
  border-bottom: 1px solid var(--color-iron);
  padding-bottom: var(--spacing-4);
}
.metrics .metric__name { letter-spacing: 0.04em; text-transform: uppercase; font-size: var(--text-body-sm); }
.metrics .metric__bar {
  flex: 1;
  height: 4px;
  background: var(--color-iron);
  position: relative;
  align-self: center;
  margin-inline: var(--spacing-12);
}
.metrics .metric__bar > span { position: absolute; inset: 0 auto 0 0; background: var(--color-platinum); }
.metrics .metric__num { font-family: var(--font-dot-matrix); font-size: var(--text-body-sm); }

/* =========================================================================
   10. DATACRON ARTICLE
   ========================================================================= */
.article__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-16);
  list-style: none;
  margin: 0 0 var(--spacing-28);
  padding: 0;
  color: var(--color-ash);
}
.article__meta li { font-size: var(--text-body-sm); letter-spacing: var(--tracking-body-sm); }
.article__section { margin-block: var(--section-gap); }
.article__section p { color: var(--color-platinum); max-width: 72ch; }
.article__layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-60);
  align-items: start;
}
@media (max-width: 900px) { .article__layout { grid-template-columns: 1fr; gap: var(--spacing-28); } }

.verdict {
  background: var(--color-void);
  border: 1px solid var(--color-platinum);
  padding: var(--card-padding);
}

/* Editorial spotlight tile (Sound Pack Highlight equivalent) */
.spotlight {
  background: var(--color-accent);
  color: var(--color-pure-white);
  padding: var(--spacing-28);
}
.spotlight__name {
  font-family: var(--font-display);
  font-weight: var(--fw-medium);
  font-size: var(--text-heading-lg);
  line-height: 1.05;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  margin: 0;
}

/* =========================================================================
   11. FORMS
   ========================================================================= */
.field { display: flex; flex-direction: column; gap: var(--spacing-4); margin-bottom: var(--spacing-16); }
.field label {
  font-size: var(--text-body-sm);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.input, .textarea {
  background-color: var(--color-iron);
  color: var(--color-platinum);
  border: 1px solid var(--color-platinum);
  border-radius: var(--radius-inputs);
  font-family: var(--font-text);
  font-size: var(--text-body-sm);
  line-height: var(--leading-body-sm);
  padding: 14px 18px;
  width: 100%;
}
.input::placeholder, .textarea::placeholder { color: var(--color-ash); }
.input:focus, .textarea:focus {
  outline: none;
  border-width: 2px;          /* border thickens on focus, no glow */
  padding: 13px 17px;         /* compensate width so layout holds */
}
.textarea { min-height: 140px; resize: vertical; }

.form-note {
  border: 1px solid var(--color-platinum);
  background: var(--color-deep-surface);
  padding: var(--spacing-12) var(--spacing-16);
  margin-bottom: var(--spacing-16);
}

/* =========================================================================
   12. FOOTER
   ========================================================================= */
.footer {
  background-color: var(--color-page-canvas);
  border-top: 1px solid var(--color-deep-surface);
  padding-block: var(--spacing-28);
}
.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-16);
}
.footer__links { display: flex; flex-wrap: wrap; align-items: center; list-style: none; margin: 0; padding: 0; }
.footer__links li { display: flex; align-items: center; }
.footer__links li + li::before {
  content: "";
  width: 1px; height: 12px;
  background: var(--color-platinum);
  margin-inline: 18px;
  display: inline-block;
}
.footer__links a { font-size: var(--text-body-sm); letter-spacing: 0.04em; }
.footer__copy { font-size: var(--text-caption); letter-spacing: var(--tracking-caption); color: var(--color-ash); }

/* =========================================================================
   13. NEURAL LINK CONSENT (Cookies)
   ========================================================================= */
.consent {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  background-color: var(--color-void);
  border-top: 1px solid var(--color-platinum);
  z-index: 9999;
  padding: var(--spacing-16);
}
.consent[hidden] { display: none; }
.consent__inner {
  max-width: var(--page-max-width);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-16);
  flex-wrap: wrap;
}
.consent__text { font-size: var(--text-body-sm); letter-spacing: var(--tracking-body-sm); margin: 0; max-width: 70ch; }
.consent__text a { text-decoration: underline; }

/* =========================================================================
   14. MISC
   ========================================================================= */
.tag {
  display: inline-block;
  border: 1px solid var(--color-platinum);
  border-radius: var(--radius-tags);
  padding: 2px var(--spacing-12);
  font-size: var(--text-caption);
  letter-spacing: var(--tracking-caption);
  text-transform: uppercase;
}
.eyebrow {
  font-family: var(--font-dot-matrix);
  letter-spacing: 0.033em;
  color: var(--color-accent);
  font-size: var(--text-body-sm);
  margin-bottom: var(--spacing-12);
  display: block;
}
.lede { font-size: var(--text-subheading); line-height: var(--leading-subheading); color: var(--color-platinum); }
.divider { border: 0; border-top: 1px solid var(--color-iron); margin-block: var(--section-gap); }
.list-clean { list-style: none; margin: 0; padding: 0; }
.prose p { color: var(--color-platinum); max-width: 72ch; }
.prose h2 { margin-top: var(--section-gap); }