/**
 * globals.css — Novarix Networks
 *
 * Design tokens and base styles for the Novarix Networks marketing site.
 *
 * Structure:
 *   1. Design tokens (CSS custom properties)
 *   2. CSS reset & base element styles
 *   3. Layout utilities (.container, .narrow)
 *   4. Ambient background layer
 *   5. Site header
 *   6. Hero section
 *   7. Shared section / card / direction-list styles
 *   8. Footer
 *   9. Intro overlay (first-visit splash animation)
 *  10. Keyframe animations
 *  11. Responsive breakpoints (980 → 720 → 560 px)
 *  12. Reduced-motion overrides
 */

/* ─────────────────────────────────────────────
   1. Design tokens
   ───────────────────────────────────────────── */

:root {
  color-scheme: light dark;

  /* Backgrounds */
  --bg: #fbfcfb;
  --bg-elevated: rgba(248, 250, 252, 0.78); /* card / panel surfaces */
  --bg-strong: #071014;

  /* Text */
  --text: #0b1418;
  --text-soft: #4b5c63; /* secondary / body copy */

  /* Borders */
  --border: rgba(15, 23, 42, 0.10);
  --border-strong: rgba(15, 23, 42, 0.18); /* hover / active states */

  /* Buttons — primary (filled) */
  --button: #0f172a;
  --button-text: #ffffff;

  /* Buttons — secondary (outlined) */
  --button-secondary-bg: transparent;
  --button-secondary-text: #0f172a;
  --button-secondary-border: rgba(15, 23, 42, 0.20);

  /* Brand accent (eyebrows, phase labels, hover links) */
  --accent: #218ba0;
  --accent-strong: #38d1d4;
  --accent-lime: #c8f05a;

  /* Layout */
  --max-width: 1200px;
  --header-height: 96px;
  --radius: 8px;    /* card border-radius */
  --radius-sm: 6px; /* button / small element radius */

  /* Elevation */
  --shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
  --shadow-sm: 0 4px 16px rgba(15, 23, 42, 0.06);

  /* Transitions */
  --transition-fast: 160ms ease;
  --transition-base: 220ms ease;
}

/* ── Dark-mode token overrides ── */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #071014;
    --bg-elevated: rgba(9, 21, 27, 0.76);
    --bg-strong: #03090d;

    --text: #eef7f7;
    --text-soft: #a3b5bc;

    --border: rgba(148, 163, 184, 0.14);
    --border-strong: rgba(148, 163, 184, 0.26);

    --button: #e5e7eb;
    --button-text: #020617;

    --button-secondary-bg: transparent;
    --button-secondary-text: #e5e7eb;
    --button-secondary-border: rgba(148, 163, 184, 0.28);

    --accent: #38d1d4;
    --accent-strong: #69e6e8;
    --accent-lime: #d7f76f;

    --shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
    --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.20);
  }
}

/* ─────────────────────────────────────────────
   2. CSS reset & base element styles
   ───────────────────────────────────────────── */

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

html {
  scroll-behavior: smooth;
  /* Reserve gutter for scrollbar so content doesn't shift on overflow toggle */
  scrollbar-gutter: stable;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    var(--font-dm-sans),
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  overflow-x: hidden;
}

/* ── Focus-visible — keyboard navigation indicator ── */

/*
 * Visible outline for keyboard users only. Mouse/touch interactions do not
 * trigger :focus-visible, so this does not affect pointer-driven UX.
 */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

:focus:not(:focus-visible) {
  outline: none;
}

/* Inherit colour from parent; text-decoration handled per component */
a {
  color: inherit;
  text-decoration: none;
}

/* Prevent images from overflowing their containers */
img {
  display: block;
  max-width: 100%;
}

/* ─────────────────────────────────────────────
   3. Layout utilities
   ───────────────────────────────────────────── */

/* Centred, max-width container with responsive horizontal padding */
.container {
  width: min(var(--max-width), calc(100% - 48px));
  margin: 0 auto;
}

/* Narrow variant for text-heavy sections (Direction, Contact) */
.narrow {
  max-width: 880px;
}

/* ─────────────────────────────────────────────
   4. Ambient background layer
   ───────────────────────────────────────────── */

/**
 * .site-shell
 *
 * Full-page wrapper that renders two layered radial gradients. Their focal
 * points follow the cursor via --mx / --my CSS custom properties, which are
 * updated by a mousemove handler in page.tsx.
 */
.site-shell {
  position: relative;
  isolation: isolate;
  min-height: 100vh;
  background:
    radial-gradient(
      circle at var(--mx, 50%) var(--my, 22%),
      rgba(56, 209, 212, 0.12),
      transparent 18%
    ),
    radial-gradient(
      circle at calc(var(--mx, 50%) * 0.65) calc(var(--my, 22%) * 1.2),
      rgba(200, 240, 90, 0.06),
      transparent 22%
    ),
    var(--bg);
}

/**
 * .ambient-layer
 *
 * Fixed, non-interactive overlay rendered behind all page content.
 * Contains:
 *   • .ambient-orb-a / .ambient-orb-b  — blurred colour blobs
 *   • .ambient-grid                     — subtle perspective grid
 */
.ambient-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

/* Fine grid that fades out toward the bottom of the viewport */
.ambient-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right,  rgba(148, 163, 184, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(148, 163, 184, 0.07) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.4), transparent 80%);
}

/* Shared base for the slow ambient sweeps behind the page content */
.ambient-orb {
  position: absolute;
  filter: blur(54px);
  opacity: 0.16;
  animation: drift 16s ease-in-out infinite;
  will-change: transform; /* promote to GPU layer */
}

.ambient-orb-a {
  width: 42rem;
  height: 18rem;
  top: 7rem;
  right: -14rem;
  transform: rotate(-14deg);
  background: linear-gradient(
    135deg,
    rgba(56, 209, 212, 0.55),
    rgba(32, 92, 140, 0.12)
  );
}

.ambient-orb-b {
  width: 36rem;
  height: 14rem;
  top: 28rem;
  left: -12rem;
  transform: rotate(18deg);
  background: linear-gradient(
    135deg,
    rgba(200, 240, 90, 0.28),
    rgba(34, 211, 238, 0.12)
  );
  animation-duration: 22s;
}

/* ─────────────────────────────────────────────
   5. Site header
   ───────────────────────────────────────────── */

/**
 * Sticky frosted-glass header.
 * z-index: 1000 keeps it above section content; the intro overlay uses
 * z-index: 2000 so it still renders on top during the splash sequence.
 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  min-height: var(--header-height);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: border-color var(--transition-fast);
}

/* Flexbox row: brand on the left, nav on the right */
.header-inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  flex: 0 1 auto;
}

.brand-image {
  width: auto;
  height: 52px;
  max-width: min(540px, 40vw);
  object-fit: contain;
}

/* Light / dark wordmark swap ──
   Default: show colour wordmark (light mode)
   Dark mode: swap to white wordmark                */
.brand-image-dark,
.intro-wordmark-dark {
  display: none;
}

@media (prefers-color-scheme: dark) {
  .brand-image-light,
  .intro-wordmark-light {
    display: none;
  }

  .brand-image-dark,
  .intro-wordmark-dark {
    display: block;
  }
}

/* Primary navigation */
.nav {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-shrink: 0;
}

.nav a {
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--text-soft);
  transition: color var(--transition-fast);
}

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

/* ─────────────────────────────────────────────
   6. Hero section
   ───────────────────────────────────────────── */

.hero {
  position: relative;
  overflow: hidden;
  padding: 112px 0 58px;
}

/* Constrain hero copy for comfortable line length at wide viewports */
.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 930px;
}

.hero-mark {
  position: absolute;
  inset: 20px -12vw auto auto;
  width: min(72rem, 86vw);
  height: min(48rem, 58vw);
  background-image: url("/branding/animated_logo_intro.svg");
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
  opacity: 0.075;
  pointer-events: none;
  transform: rotate(-2deg);
}

/* Small all-caps service category label */
.eyebrow {
  margin: 0 0 20px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero h1 {
  margin: 0;
  max-width: 1040px;
  font-size: 4.8rem;
  line-height: 0.98;
  letter-spacing: 0;
  font-weight: 700;
}

.hero-text {
  margin: 28px 0 0;
  max-width: 760px;
  font-size: 1.16rem;
  line-height: 1.78;
  color: var(--text-soft);
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 38px;
}

.signal-strip {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 56px;
  border: 1px solid var(--border);
  background: var(--border);
  box-shadow: var(--shadow-sm);
}

.signal-item {
  min-height: 112px;
  padding: 22px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.signal-item span {
  display: block;
  margin-bottom: 10px;
  color: var(--text-soft);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.signal-item strong {
  display: block;
  color: var(--text);
  font-size: 1.08rem;
  line-height: 1.35;
}

/* ─────────────────────────────────────────────
   7. Shared section / card / direction-list styles
   ───────────────────────────────────────────── */

/* ── Buttons ── */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 22px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition:
    transform var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--button);
  color: var(--button-text);
  box-shadow: var(--shadow-sm);
}

.button-primary:hover {
  background: color-mix(in srgb, var(--button) 88%, var(--accent-strong));
  box-shadow: var(--shadow);
}

.button-secondary {
  background: var(--button-secondary-bg);
  color: var(--button-secondary-text);
  border-color: var(--button-secondary-border);
}

/* ── Sections ── */

.section {
  position: relative;
  padding: 92px 0;
}

.statement-section {
  padding: 56px 0;
  background: var(--bg-strong);
  color: #ffffff;
}

.statement-section p {
  margin: 0;
  max-width: 1040px;
  font-size: 2rem;
  line-height: 1.28;
  font-weight: 650;
}

/* Visual divider between page sections */
.section-border {
  border-top: 1px solid var(--border);
}

/* Shared heading block (h2 + optional sub-text) */
.section-heading h2 {
  margin: 0;
  font-size: 2.6rem;
  line-height: 1.1;
  letter-spacing: 0;
}

.section-heading p {
  margin: 18px 0 0;
  max-width: 760px;
  font-size: 1.02rem;
  line-height: 1.78;
  color: var(--text-soft);
}

/* ── Service cards ── */

/* 3-column grid; collapses to single column below 980 px */
.card-grid {
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

/**
 * Glass-surface card.
 * backdrop-filter keeps the card legible against the animated
 * ambient background while allowing colour bleed through.
 */
.card {
  padding: 32px 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
  transition:
    transform var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  box-shadow: 0 24px 48px rgba(15, 23, 42, 0.12);
}

/* Accent-tinted icon container rendered above card title */
.card-eyebrow {
  display: inline-flex;
  margin-bottom: 42px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.card h3 {
  margin: 0;
  font-size: 1.18rem;
  line-height: 1.25;
  font-weight: 600;
}

.card p {
  margin: 14px 0 0;
  font-size: 0.97rem;
  line-height: 1.82;
  color: var(--text-soft);
}

.card-points {
  display: grid;
  gap: 10px;
  margin: 24px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--border);
  list-style: none;
}

.card-points li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 650;
  line-height: 1.45;
}

.card-points li::before {
  content: "";
  width: 7px;
  height: 7px;
  margin-top: 0.48em;
  flex: 0 0 auto;
  background: var(--accent-strong);
}

.network-section {
  padding: 92px 0;
  background: color-mix(in srgb, var(--bg-strong) 96%, var(--accent));
  color: #ffffff;
}

.network-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: 64px;
  align-items: start;
}

.network-section .section-heading p {
  color: rgba(255, 255, 255, 0.70);
}

.network-stack {
  display: grid;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.network-stack-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 22px;
  padding: 28px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.network-stack-item span {
  color: var(--accent-lime);
  font-size: 0.82rem;
  font-weight: 800;
}

.network-stack-item strong {
  display: block;
  font-size: 1.24rem;
  line-height: 1.25;
}

.network-stack-item p {
  margin: 10px 0 0;
  color: rgba(255, 255, 255, 0.68);
  line-height: 1.72;
}

/* ── Platform direction list ── */

.direction-list {
  margin-top: 44px;
  display: grid;
  gap: 0; /* dividers provided by border-top on each item */
}

.direction-item {
  padding: 28px 0;
  border-top: 1px solid var(--border);
}

.direction-item:first-child {
  border-top: 0;
  padding-top: 0;
}

/* "Phase N" label */
.direction-phase {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.direction-item h3 {
  margin: 0;
  font-size: 1.18rem;
  line-height: 1.3;
  font-weight: 600;
}

.direction-item p {
  margin: 12px 0 0;
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--text-soft);
}

/* ── Contact ── */

.contact-link {
  display: inline-block;
  margin-top: 24px;
  font-size: 1.08rem;
  font-weight: 600;
  letter-spacing: 0;
  transition: color var(--transition-fast);
}

.contact-link:hover {
  color: var(--accent);
}

/* ─────────────────────────────────────────────
   8. Footer
   ───────────────────────────────────────────── */

.footer {
  padding: 28px 0 52px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--text-soft);
  font-size: 0.88rem;
}

/* ─────────────────────────────────────────────
   9. Intro overlay (first-visit splash)
   ───────────────────────────────────────────── */

/**
 * .intro-overlay
 *
 * Full-screen fixed overlay displayed only on the first page view within a
 * browser session (controlled via sessionStorage in page.tsx).
 *
 * Animation sequence:
 *   0 ms       — overlay visible; Lottie animation begins
 *   350 ms     — wordmark slides up (intro-wordmark keyframe)
 *   2 450 ms   — overlay begins fading out (intro-fade-out, 620 ms)
 *   ~3 070 ms  — overlay fully hidden; pointer-events removed
 *
 * z-index: 2000 — above sticky header (1000)
 */
.intro-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: grid;
  place-items: center;
  animation: intro-fade-out 620ms ease 2.45s forwards;
}

/* Solid background fill behind Lottie / wordmark */
.intro-backdrop {
  position: absolute;
  inset: 0;
  background: var(--bg);
}

/* Vertical stack: Lottie above, wordmark below */
.intro-shell {
  position: relative;
  display: grid;
  justify-items: center;
  gap: 26px;
  padding: 32px;
}

/* Responsive container for the Lottie animation */
.intro-lottie-wrap {
  width: min(58vw, 700px);
  display: grid;
  place-items: center;
}

.intro-lottie {
  width: 100%;
  height: auto;
}

/* Clips the upward slide of the wordmark */
.intro-wordmark-wrap {
  overflow: hidden;
}

/* Wordmark enters by sliding up from the clip boundary */
.intro-wordmark {
  width: min(54rem, 78vw);
  height: auto;
  animation: intro-wordmark 1s cubic-bezier(0.2, 0.8, 0.2, 1) 0.35s both;
}

/**
 * .intro-running
 *
 * Applied to <main> while the intro overlay is visible.
 * Hides page sections without removing them from the accessibility tree,
 * preventing a content flash beneath the overlay.
 */
.intro-running .site-header,
.intro-running .hero,
.intro-running .statement-section,
.intro-running .section,
.intro-running .network-section,
.intro-running .footer {
  opacity: 0;
}

/* ─────────────────────────────────────────────
   10. Keyframe animations
   ───────────────────────────────────────────── */

/* Slow vertical drift for ambient colour blobs */
@keyframes drift {
  0%, 100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(0, 18px, 0) scale(1.06);
  }
}

/* Intro wordmark: slide up with scale from clip boundary */
@keyframes intro-wordmark {
  0% {
    opacity: 0;
    transform: translateY(110%) scale(0.98);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Fade the entire intro overlay out after the splash completes */
@keyframes intro-fade-out {
  to {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }
}

/* ─────────────────────────────────────────────
   11. Responsive breakpoints
   ───────────────────────────────────────────── */

/* ── Tablet / narrow desktop (≤ 980 px) ── */
@media (max-width: 980px) {
  .card-grid {
    grid-template-columns: 1fr; /* stack cards vertically */
  }

  .hero h1 {
    font-size: 3.8rem;
  }

  .signal-strip,
  .network-layout {
    grid-template-columns: 1fr;
  }

  .statement-section p {
    font-size: 1.65rem;
  }

  .hero {
    padding-top: 88px;
  }

  .brand-image {
    height: 46px;
    max-width: min(440px, 50vw);
  }

  .intro-lottie-wrap {
    width: min(72vw, 560px);
  }
}

/* ── Mobile (≤ 720 px) ── */
@media (max-width: 720px) {
  :root {
    --header-height: 80px;
  }

  .container {
    width: min(var(--max-width), calc(100% - 32px));
  }

  .nav {
    gap: 18px;
  }

  .nav a {
    font-size: 0.88rem;
  }

  .brand-image {
    height: 36px;
    max-width: 54vw;
  }

  .hero {
    padding: 72px 0 80px;
  }

  .section {
    padding: 72px 0;
  }

  .hero h1 {
    font-size: 3.1rem;
    line-height: 1.02;
  }

  .hero-mark {
    inset: 80px -38vw auto auto;
    width: 54rem;
    height: 34rem;
    opacity: 0.065;
  }

  .signal-strip {
    margin-top: 40px;
  }

  .signal-item {
    min-height: auto;
    padding: 18px;
  }

  .statement-section {
    padding: 42px 0;
  }

  .statement-section p {
    font-size: 1.35rem;
  }

  .section-heading h2 {
    font-size: 2.15rem;
  }

  .network-section {
    padding: 72px 0;
  }

  .network-stack-item {
    grid-template-columns: 42px minmax(0, 1fr);
  }

  .hero-text,
  .section-heading p,
  .direction-item p {
    font-size: 0.98rem;
    line-height: 1.72;
  }

  .intro-lottie-wrap {
    width: min(82vw, 420px);
  }

  .intro-wordmark {
    width: 86vw;
  }
}

/* ── Small mobile (≤ 560 px) ── */
@media (max-width: 560px) {
  .header-inner {
    gap: 16px;
  }

  .nav {
    gap: 12px;
  }

  .brand-image {
    height: 30px;
    max-width: 50vw;
  }

  .hero h1 {
    font-size: 2.55rem;
  }

  .nav {
    display: none;
  }

  .hero-text {
    margin-top: 22px;
  }

  .network-stack-item {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .intro-lottie-wrap {
    width: min(88vw, 340px);
  }

  /* Stack CTA buttons to full-width on small screens */
  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .button {
    width: 100%;
    justify-content: center;
  }
}

/* ─────────────────────────────────────────────
   12. Reduced-motion overrides
   ───────────────────────────────────────────── */

/**
 * Honour the OS "Reduce Motion" accessibility setting.
 * Animations are disabled and the intro overlay is immediately hidden
 * so users are not blocked waiting for the splash to complete.
 */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .ambient-orb {
    animation: none !important;
  }

  /* Skip the intro entirely for users who prefer reduced motion */
  .intro-overlay {
    animation: none !important;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }

  .intro-wordmark {
    animation: none !important;
    opacity: 1;
    transform: none;
  }

  .button,
  .card {
    transition: none !important;
  }
}