/* ==========================================================================
   MOONLYTIX — Shared Foundation
   Tokens, reset, base typography, and reusable components.
   Design language: "the terminator line" — the boundary between raw,
   unstructured operational data (cratered, granular, dark) and the
   structured clarity Moonlytix builds from it (connected mesh, ember light).
   ========================================================================== */

/* ---------- Fonts ---------- */

/* ---------- Tokens ---------- */
:root {
  /* Color — brand */
  --void: #070929;
  --void-deep: #04051c;
  --void-raised: #10123a;
  --void-raised-2: #161a4a;
  --paper: #f6f6fa;
  --paper-raised: #ffffff;
  --ink: #0b0e2e;
  --ink-soft: #4b4f72;
  --mist: #8286ac;
  --line-light: #e3e3ef;
  --line-dark: rgba(255, 255, 255, 0.1);
  --line-dark-strong: rgba(255, 255, 255, 0.18);
  --white: #ffffff;
  --ember-red: #ff3131;
  --ember-orange: #ff914d;
  --ember-gradient: linear-gradient(120deg, #ff3131 0%, #ff914d 100%);
  --ember-gradient-soft: linear-gradient(120deg, rgba(255, 49, 49, 0.14) 0%, rgba(255, 145, 77, 0.14) 100%);
  --text-on-dark: rgba(255, 255, 255, 0.92);
  --text-on-dark-soft: rgba(255, 255, 255, 0.62);
  --text-on-dark-mist: rgba(255, 255, 255, 0.4);

  /* Type */
  --font-display: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Space Grotesk', 'Inter', sans-serif;
  --font-body: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
  --font-brand: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Poppins', 'Inter', sans-serif;

  --fs-hero: clamp(2.5rem, 2.2vw + 1.25rem, 4rem);
  --fs-h1: clamp(2.25rem, 2.6vw + 1.3rem, 3.5rem);
  --fs-h2: clamp(1.75rem, 1.6vw + 1.2rem, 2.5rem);
  --fs-h3: clamp(1.3rem, 0.6vw + 1.05rem, 1.5rem);
  --fs-lead: clamp(1.125rem, 0.4vw + 1rem, 1.375rem);
  --fs-body: 1.0625rem;
  --fs-small: 0.9375rem;
  --fs-micro: 0.75rem;

  /* Spacing (8px rhythm, generous for a premium marketing site) */
  --sp-1: 0.5rem;
  --sp-2: 0.75rem;
  --sp-3: 1rem;
  --sp-4: 1.5rem;
  --sp-5: 2rem;
  --sp-6: 3rem;
  --sp-7: 4rem;
  --sp-8: 6rem;
  --sp-9: 8rem;
  --section-pad: clamp(4.5rem, 8vw, 8rem);

  /* Layout */
  --container: 1280px;
  --container-narrow: 820px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 26px;
  --radius-full: 999px;

  /* Elevation */
  --shadow-light-sm: 0 2px 10px rgba(11, 14, 46, 0.06);
  --shadow-light-md: 0 12px 32px rgba(11, 14, 46, 0.09);
  --shadow-light-lg: 0 24px 60px rgba(11, 14, 46, 0.14);
  --shadow-dark-md: 0 20px 50px rgba(2, 3, 15, 0.5);
  --shadow-ember: 0 10px 40px rgba(255, 66, 61, 0.25);

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 180ms;
  --dur-med: 320ms;
  --dur-slow: 600ms;

  --nav-h: 84px;
}

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

* {
  margin: 0;
}

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

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

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  min-height: 100dvh;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

ul,
ol {
  list-style: none;
  padding: 0;
}

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

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

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid var(--ember-orange);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: var(--ember-red);
  color: var(--white);
}

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.5rem, 4vw, 3rem);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding-block: var(--section-pad);
  position: relative;
}

.section--tight {
  padding-block: calc(var(--section-pad) * 0.6);
}

.section--dark {
  background: var(--void);
  color: var(--text-on-dark);
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--white);
}

.section--void-deep {
  background: var(--void-deep);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-body);
  font-size: var(--fs-micro);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ember-red);
  font-weight: 600;
  margin-bottom: var(--sp-3);
}

.section--dark .eyebrow {
  color: var(--ember-orange);
}

.lead {
  font-size: var(--fs-lead);
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 46ch;
}

.section--dark .lead {
  color: var(--text-on-dark-soft);
}

.ember-text {
  background: var(--ember-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 600;
}

.text-center {
  text-align: center;
  margin-inline: auto;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  top: -60px;
  left: var(--sp-4);
  background: var(--ember-red);
  color: var(--white);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  z-index: 1000;
  transition: top var(--dur-fast) var(--ease-out);
  font-family: var(--font-mono);
  font-size: var(--fs-small);
}

.skip-link:focus {
  top: var(--sp-3);
}

/* ---------- Grid utilities ---------- */
.grid {
  display: grid;
  gap: var(--sp-5);
}

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

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

@media (max-width: 900px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--fs-small);
  padding: 0.95rem 1.75rem;
  border-radius: var(--radius-full);
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out),
    background var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
  white-space: nowrap;
  min-height: 44px;
}

.btn svg {
  width: 18px;
  height: 18px;
  transition: transform var(--dur-med) var(--ease-out);
}

.btn:hover svg {
  transform: translateX(3px);
}

.btn-primary {
  background: var(--ember-gradient);
  color: var(--white);
  box-shadow: var(--shadow-ember);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 46px rgba(255, 66, 61, 0.36);
}

.btn-secondary {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line-light);
}

.section--dark .btn-secondary {
  color: var(--white);
  border-color: var(--line-dark-strong);
}

.btn-secondary:hover {
  border-color: var(--ember-orange);
  background: rgba(255, 145, 77, 0.08);
  color: var(--ember-orange);
}

.btn-ghost {
  background: none;
  color: var(--ink);
  padding-inline: 0.25rem;
  border-bottom: 1px solid var(--line-light);
  border-radius: 0;
}

.section--dark .btn-ghost {
  color: var(--white);
  border-color: var(--line-dark-strong);
}

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

/* ---------- Navigation ---------- */
/* Note: the blur lives on ::before, not .site-header itself, so that
   .site-header never gains `filter`/`backdrop-filter` — either would make it
   the containing block for its position:fixed descendant (.nav-links on
   mobile), sizing that panel to the 84px header bar instead of the viewport. */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: border-color var(--dur-med) var(--ease-out);
}

.site-header::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(7, 9, 41, 0.72);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  transition: background var(--dur-med) var(--ease-out);
}

.site-header.is-scrolled::before {
  background: rgba(7, 9, 41, 0.92);
}

.site-header.is-scrolled {
  border-bottom-color: var(--line-dark);
}

.site-header .container {
  display: flex;
  align-items: center;
  gap: var(--sp-7);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-brand);
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--white);
  letter-spacing: 0;
  flex-shrink: 0;
}

.brand__mark {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.brand__word-accent {
  background: var(--ember-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
}

.nav-links a {
  font-size: var(--fs-small);
  font-weight: 500;
  color: var(--text-on-dark-soft);
  position: relative;
  padding-block: 0.4rem;
  transition: color var(--dur-fast) var(--ease-out);
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--ember-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-med) var(--ease-out);
}

.nav-links a:hover,
.nav-links a[aria-current='page'] {
  color: var(--white);
}

.nav-links a:hover::after,
.nav-links a[aria-current='page']::after {
  transform: scaleX(1);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-left: auto;
}

.nav-actions .btn-primary {
  padding: 0.7rem 1.4rem;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  color: var(--white);
  z-index: 110;
}

.nav-toggle svg {
  width: 24px;
  height: 24px;
}

.icon-close {
  display: none;
}

.nav-open .icon-menu {
  display: none;
}

.nav-open .icon-close {
  display: block;
}

@media (max-width: 900px) {
  .nav-links {
    position: fixed;
    inset: 0;
    top: var(--nav-h);
    background: var(--void);
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding: var(--sp-7) var(--sp-5);
    gap: var(--sp-5);
    transform: translateX(100%);
    transition: transform var(--dur-med) var(--ease-in-out);
    overflow-y: auto;
  }

  .nav-links a {
    font-size: 1.5rem;
    font-family: var(--font-display);
    font-weight: 500;
  }

  .nav-open .nav-links {
    transform: translateX(0);
  }

  .nav-actions .btn-primary {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--void-deep);
  color: var(--text-on-dark-soft);
  padding-block: var(--sp-8) var(--sp-5);
  position: relative;
  overflow: hidden;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.1fr;
  max-width: 960px;
  gap: var(--sp-6);
  padding-bottom: var(--sp-7);
  border-bottom: 1px solid var(--line-dark);
}

.footer-brand p {
  margin-top: var(--sp-3);
  max-width: 32ch;
  color: var(--text-on-dark-mist);
  font-size: var(--fs-small);
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-on-dark-mist);
  font-weight: 500;
  margin-bottom: var(--sp-3);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-col a {
  font-size: var(--fs-small);
  color: var(--text-on-dark-soft);
  transition: color var(--dur-fast) var(--ease-out);
}

.footer-col a:hover {
  color: var(--ember-orange);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--sp-5);
  font-size: var(--fs-micro);
  color: var(--text-on-dark-mist);
  font-family: var(--font-mono);
  flex-wrap: wrap;
  gap: var(--sp-3);
}

.footer-bottom a:hover {
  color: var(--ember-orange);
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
}

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

/* ---------- Cards ---------- */
.card {
  background: var(--paper-raised);
  border: 1px solid var(--line-light);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
  position: relative;
  overflow: hidden;
  transition: transform var(--dur-med) var(--ease-out), box-shadow var(--dur-med) var(--ease-out), border-color var(--dur-med) var(--ease-out);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-light-lg);
  border-color: transparent;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 2px;
  background: var(--ember-gradient);
  transition: left var(--dur-slow) var(--ease-out);
}

.card:hover::before {
  left: 0;
}

.card--dark {
  background: var(--void-raised);
  border-color: var(--line-dark);
}

.card--dark:hover {
  box-shadow: var(--shadow-dark-md);
}

/* ---------- Terminator divider ---------- */
.terminator {
  position: relative;
  height: 1px;
  width: 100%;
}

.terminator svg {
  position: absolute;
  top: -1px;
  left: 0;
  width: 100%;
  height: auto;
  display: block;
}

/* ---------- Scroll reveal ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
}

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

[data-reveal-group] > * {
  transition-delay: calc(var(--i, 0) * 70ms);
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

/* ---------- CTA band (shared across pages) ---------- */
.cta-band {
  position: relative;
  text-align: center;
  overflow: hidden;
  background: var(--void);
}

.cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at 50% 100%, rgba(255, 66, 61, 0.16), transparent 70%);
  pointer-events: none;
}

.cta-band .container {
  position: relative;
  max-width: 720px;
}

.cta-band h2 {
  color: var(--white);
  margin-bottom: var(--sp-4);
}

.cta-band p {
  color: var(--text-on-dark-soft);
  font-size: var(--fs-lead);
  margin-bottom: var(--sp-6);
}

.cta-band .btn-group {
  display: flex;
  justify-content: center;
  gap: var(--sp-4);
  flex-wrap: wrap;
}

.cta-band .btn-secondary {
  color: var(--white);
  border-color: var(--line-dark-strong);
}

/* ---------- Illustration motion ---------- */
@keyframes pulseRing {
  0% {
    transform: scale(0.6);
    opacity: 0.55;
  }
  100% {
    transform: scale(1.8);
    opacity: 0;
  }
}

.pulse-ring {
  transform-origin: center;
  transform-box: fill-box;
  animation: pulseRing 2.6s var(--ease-out) infinite;
}

.pulse-ring--delay {
  animation-delay: 1.3s;
}

@keyframes dashFlow {
  to {
    stroke-dashoffset: -24;
  }
}

.flow-line {
  animation: dashFlow 1.8s linear infinite;
}

/* ---------- Stat / mono figures ---------- */
.stat-figure {
  font-family: var(--font-mono);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

/* ---------- Form elements (shared) ---------- */
.field {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  margin-bottom: var(--sp-4);
}

.field label {
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--ink);
}

.field .hint {
  font-size: var(--fs-micro);
  color: var(--mist);
}

.field input,
.field textarea,
.field select {
  background: var(--paper-raised);
  border: 1.5px solid var(--line-light);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1rem;
  font-size: var(--fs-body);
  color: var(--ink);
  transition: border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
  min-height: 44px;
}

.field textarea {
  resize: vertical;
  min-height: 140px;
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  border-color: var(--ember-orange);
  outline: none;
  box-shadow: 0 0 0 4px rgba(255, 145, 77, 0.15);
}

.field input:invalid[data-touched='true'],
.field textarea:invalid[data-touched='true'] {
  border-color: var(--ember-red);
}

.field .error-msg {
  font-size: var(--fs-micro);
  color: var(--ember-red);
  display: none;
}

.field[data-error='true'] .error-msg {
  display: block;
}

.field[data-error='true'] input,
.field[data-error='true'] textarea {
  border-color: var(--ember-red);
}

.required-mark {
  color: var(--ember-red);
}

.optional-mark {
  color: var(--mist);
  font-weight: 500;
}