/* ==========================================================================
   Octivra Technologies — Base: reset, typography, layout primitives, utilities
   ========================================================================== */

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

* {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 1.25rem);
  background-color: var(--color-bg);
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  font-weight: var(--weight-regular);
  color: var(--color-text);
  background-color: var(--color-bg);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "cv11", "ss01", "ss03";
  overflow-x: clip;
}

main {
  flex: 1 0 auto;
}

main:focus {
  outline: none;
}

[tabindex="-1"]:focus-visible {
  outline: none;
}

/* Scroll lock while the mobile menu is open */
@media (max-width: 63.99rem) {
  html.nav-open,
  html.nav-open body {
    overflow: hidden;
  }
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

img {
  height: auto;
}

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

button {
  cursor: pointer;
  background: none;
  border: 0;
  padding: 0;
}

p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}

ul[role="list"],
ol[role="list"] {
  list-style: none;
  padding: 0;
}

table {
  border-collapse: collapse;
}

::selection {
  background: var(--color-selection);
}

[hidden] {
  display: none !important;
}

/* ---- Typography ---------------------------------------------------------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  color: var(--color-heading);
  font-weight: var(--weight-bold);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-snug);
  text-wrap: balance;
}

h1 {
  font-size: var(--text-5xl);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  font-weight: var(--weight-extrabold);
}

h2 {
  font-size: var(--text-4xl);
  line-height: 1.12;
  letter-spacing: var(--tracking-tight);
}

h3 {
  font-size: var(--text-xl);
  line-height: 1.3;
}

h4 {
  font-size: var(--text-lg);
}

p {
  text-wrap: pretty;
}

a {
  color: var(--color-link);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color var(--dur-fast) ease;
}

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

strong,
b {
  font-weight: var(--weight-semibold);
  color: var(--color-heading);
}

code,
kbd,
samp {
  font-family: var(--font-mono);
  font-size: 0.92em;
}

hr {
  border: 0;
  border-top: 1px solid var(--color-border);
}

/* Long-form text (privacy, terms, articles) */
.prose {
  max-width: 44rem;
  color: var(--color-text-secondary);
  font-size: var(--text-md);
  line-height: var(--leading-relaxed);
}

.prose > * + * {
  margin-top: var(--space-5);
}

.prose h2 {
  font-size: var(--text-2xl);
  margin-top: var(--space-12);
}

.prose h3 {
  font-size: var(--text-xl);
  margin-top: var(--space-8);
}

.prose ul,
.prose ol {
  padding-left: 1.25rem;
}

.prose li + li {
  margin-top: var(--space-2);
}

.prose li::marker {
  color: var(--color-accent);
}

/* ---- Focus ---------------------------------------------------------------- */
:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: var(--radius-xs);
}

/* ---- Skip link ------------------------------------------------------------ */
.skip-link {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  z-index: calc(var(--z-overlay) + 10);
  padding: 0.75rem 1.125rem;
  border-radius: var(--radius);
  background: var(--brand-cyan);
  color: var(--brand-navy);
  font-weight: var(--weight-semibold);
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform var(--dur) var(--ease-out);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  color: var(--brand-navy);
}

/* ---- Layout primitives --------------------------------------------------- */
.container {
  width: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container--wide {
  max-width: calc(var(--container-wide) + var(--gutter) * 2);
}

.container--narrow {
  max-width: calc(var(--container-narrow) + var(--gutter) * 2);
}

.section {
  position: relative;
  padding-block: var(--section-pad);
  background-color: var(--color-bg);
  color: var(--color-text);
  isolation: isolate;
  /* Decorative glows and rings may extend past the edges; clip (not hidden) keeps
     position: sticky working inside sections. */
  overflow-x: clip;
}

.section--compact {
  padding-block: var(--section-pad-sm);
}

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

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

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

.section--bordered {
  border-top: 1px solid var(--color-border);
}

/* Fine engineering grid used as a background texture */
.bg-grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--color-grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--color-grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: center top;
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 30%, transparent 100%);
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 30%, transparent 100%);
}

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--stack-gap, var(--space-4));
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--cluster-gap, var(--space-3));
}

.grid {
  display: grid;
  gap: var(--grid-gap, var(--space-6));
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
}

.grid--4 {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
}

/* ---- Utilities ------------------------------------------------------------ */
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

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

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

.text-accent {
  color: var(--color-accent);
}

.text-gradient {
  background: linear-gradient(100deg, var(--brand-cyan) 10%, var(--blue-400) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  max-width: 40rem;
}

.mono {
  font-family: var(--font-mono);
}

/* ---- Scroll reveal --------------------------------------------------------
   site.js adds .reveal-pending only to elements that start below the fold and
   removes it when they scroll into view. Without JS everything stays visible. */
[data-reveal] {
  transition:
    opacity var(--dur-reveal) var(--ease-out),
    transform var(--dur-reveal) var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}

[data-reveal].reveal-pending {
  opacity: 0;
  transform: translate3d(0, 18px, 0);
}

/* Stagger siblings with data-reveal-delay="1".."8" (no inline styles needed). */
[data-reveal-delay="1"] { --reveal-delay: 70ms; }
[data-reveal-delay="2"] { --reveal-delay: 140ms; }
[data-reveal-delay="3"] { --reveal-delay: 210ms; }
[data-reveal-delay="4"] { --reveal-delay: 280ms; }
[data-reveal-delay="5"] { --reveal-delay: 350ms; }
[data-reveal-delay="6"] { --reveal-delay: 420ms; }
[data-reveal-delay="7"] { --reveal-delay: 490ms; }
[data-reveal-delay="8"] { --reveal-delay: 560ms; }

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

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