/* ============================================================
   ANOXIS — base.css
   Design tokens, reset, typography, and layout primitives.
   Every page on anoxis.io links this file before anything else.
   ============================================================ */

:root {
  /* Color — surfaces */
  --color-bg:          #0b0d10;
  --color-surface:     #11141a;
  --color-surface-2:   #171b22;
  --color-surface-3:   #1e232c;

  /* Color — ink */
  --color-ink:         #f6f7f8;
  --color-ink-soft:    #9aa3b2;
  --color-ink-muted:   #6b7380;

  /* Color — accent (ANOXIS signature light neon blue) */
  --color-accent:      #7dd3fc;                      /* sky-300, light neon blue */
  --color-accent-hover:#a5e4fd;                      /* slightly brighter on hover */
  --color-accent-soft: rgba(125, 211, 252, 0.12);
  --color-accent-line: rgba(125, 211, 252, 0.32);
  --color-accent-ink:  #0b0d10;                      /* legacy — text on solid accent (rare now) */

  /* Liquid glass tokens — used for all CTAs and interactive surfaces */
  --glass-bg:          rgba(255, 255, 255, 0.08);    /* translucent white base */
  --glass-bg-hover:    rgba(255, 255, 255, 0.14);
  --glass-tint:        rgba(125, 211, 252, 0.12);    /* accent-tinted glass */
  --glass-tint-hover:  rgba(125, 211, 252, 0.20);
  --glass-border:      rgba(255, 255, 255, 0.18);
  --glass-border-hover:rgba(255, 255, 255, 0.32);
  --glass-highlight:   rgba(255, 255, 255, 0.28);    /* inset top-edge highlight */
  --glass-blur:        blur(24px) saturate(180%);

  /* White neon glow — used behind glass CTAs and accent elements */
  --glow-white-sm:     0 0 20px rgba(255, 255, 255, 0.18);
  --glow-white-md:     0 0 40px rgba(255, 255, 255, 0.25);
  --glow-white-lg:     0 0 60px rgba(255, 255, 255, 0.35);
  --glow-blue-sm:      0 0 16px rgba(125, 211, 252, 0.35);
  --glow-blue-md:      0 0 32px rgba(125, 211, 252, 0.45);

  /* Color — utility */
  --color-border:       rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(255, 255, 255, 0.16);
  --color-danger:       #ff6b6b;
  --color-warning:      #ffb84d;
  --color-success:      var(--color-accent);

  /* Typography */
  --font-display: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body:    "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, "Menlo", monospace;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.375rem;
  --text-2xl:  1.75rem;
  --text-3xl:  2.5rem;
  --text-4xl:  3.5rem;
  --text-5xl:  5rem;
  --text-6xl:  6.5rem;

  --tracking-display: -0.03em;
  --tracking-tight:   -0.02em;
  --tracking-normal:  0em;
  --tracking-wide:    0.02em;
  --tracking-wider:   0.08em;

  --weight-regular: 400;
  --weight-medium:  500;
  --weight-semi:    600;
  --weight-bold:    700;

  --leading-tight:   1.1;
  --leading-snug:    1.25;
  --leading-normal:  1.5;
  --leading-relaxed: 1.6;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.5rem;
  --space-6:  2rem;
  --space-7:  3rem;
  --space-8:  4rem;
  --space-9:  6rem;
  --space-10: 8rem;
  --space-11: 12rem;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 999px;

  /* Shadow */
  --shadow-1: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-2: 0 12px 40px rgba(0, 0, 0, 0.5);
  --shadow-accent: 0 0 0 1px rgba(125, 211, 252, 0.35), 0 12px 40px rgba(125, 211, 252, 0.18);
  --shadow-glass:
    0 0 40px rgba(255, 255, 255, 0.20),
    0 8px 32px rgba(125, 211, 252, 0.20),
    inset 0 1px 0 rgba(255, 255, 255, 0.28),
    inset 0 -1px 0 rgba(255, 255, 255, 0.06);
  --shadow-glass-hover:
    0 0 60px rgba(255, 255, 255, 0.32),
    0 12px 40px rgba(125, 211, 252, 0.32),
    inset 0 1px 0 rgba(255, 255, 255, 0.40),
    inset 0 -1px 0 rgba(255, 255, 255, 0.10);

  /* Motion */
  --ease-out:  cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in:   cubic-bezier(0.7, 0, 0.84, 0);
  --ease-both: cubic-bezier(0.87, 0, 0.13, 1);
  --dur-fast: 180ms;
  --dur-base: 320ms;
  --dur-slow: 640ms;
  --dur-extra: 1200ms;

  /* Layout */
  --max-width: 1280px;
  --container-padding-desktop: 5vw;
  --container-padding-mobile: 6vw;
}

/* ============================================================
   Reset
   ============================================================ */

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

html,
body {
  margin: 0;
  padding: 0;
}

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

body {
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  overflow-x: hidden;
}

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

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

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}

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

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

/* ============================================================
   Typography
   ============================================================ */

.eyebrow {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-ink-soft);
  margin: 0 0 var(--space-4);
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--color-accent);
}

h1,
.h1 {
  font-family: var(--font-display);
  font-size: clamp(var(--text-4xl), 8vw, var(--text-6xl));
  font-weight: var(--weight-semi);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-display);
  color: var(--color-ink);
  margin: 0 0 var(--space-5);
}

h2,
.h2 {
  font-family: var(--font-display);
  font-size: clamp(var(--text-2xl), 5vw, var(--text-4xl));
  font-weight: var(--weight-semi);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-ink);
  margin: 0 0 var(--space-5);
}

h3,
.h3 {
  font-family: var(--font-display);
  font-size: clamp(var(--text-xl), 3vw, var(--text-2xl));
  font-weight: var(--weight-semi);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-tight);
  color: var(--color-ink);
  margin: 0 0 var(--space-4);
}

h4,
.h4 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-semi);
  line-height: var(--leading-snug);
  color: var(--color-ink);
  margin: 0 0 var(--space-3);
}

p {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-ink-soft);
  margin: 0 0 var(--space-5);
  max-width: 62ch;
}

.lead {
  font-size: clamp(var(--text-lg), 2vw, var(--text-xl));
  color: var(--color-ink-soft);
  max-width: 62ch;
}

.source-cite {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  margin-top: var(--space-3);
  display: block;
}

/* ============================================================
   Layout primitives
   ============================================================ */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding-desktop);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--container-padding-mobile);
  }
}

.section {
  padding: var(--space-10) 0;
  position: relative;
}

.section--compact {
  padding: var(--space-8) 0;
}

.section--hero {
  padding: var(--space-11) 0 var(--space-10);
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

@media (max-width: 768px) {
  .section {
    padding: var(--space-8) 0;
  }

  .section--hero {
    padding: var(--space-9) 0 var(--space-7);
    min-height: auto;
  }
}

.section-header {
  max-width: 48rem;
  margin-bottom: var(--space-8);
}

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

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

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

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

@media (max-width: 960px) {
  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   Buttons
   ============================================================ */

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-full);
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: var(--weight-semi);
  letter-spacing: var(--tracking-tight);
  transition: all var(--dur-base) var(--ease-out);
  white-space: nowrap;
  border: 1px solid transparent;
  isolation: isolate;        /* contain backdrop-filter to the button */
}

/* ===== Liquid glass primary CTA =====
   Frosted white glass + black text + white neon glow + inset highlight.
   Still truly translucent — the 0.82 alpha lets the page bleed through just enough
   to preserve the liquid-glass feel rather than becoming a solid white pill. */
.btn--primary {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid rgba(255, 255, 255, 0.55);
  color: var(--color-bg);                /* near-black text on white glass */
  box-shadow: var(--shadow-glass);
}

.btn--primary:hover {
  background: rgba(255, 255, 255, 0.94);
  border-color: rgba(255, 255, 255, 0.75);
  color: var(--color-bg);
  transform: translateY(-1px);
  box-shadow: var(--shadow-glass-hover);
}

/* ===== Liquid glass secondary CTA =====
   Lower-contrast glass, muted tint, subtle white border. */
.btn--secondary {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  color: var(--color-ink);
  box-shadow:
    0 0 24px rgba(255, 255, 255, 0.10),
    inset 0 1px 0 rgba(255, 255, 255, 0.20),
    inset 0 -1px 0 rgba(255, 255, 255, 0.04);
}

.btn--secondary:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  color: var(--color-ink);
  transform: translateY(-1px);
  box-shadow:
    0 0 40px rgba(255, 255, 255, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.32),
    inset 0 -1px 0 rgba(255, 255, 255, 0.08);
}

.btn--ghost {
  background: transparent;
  color: var(--color-ink-soft);
  padding: var(--space-3) var(--space-4);
}

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

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

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

/* ============================================================
   Cards
   ============================================================ */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: border-color var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out);
}

.card:hover {
  border-color: var(--color-border-hover);
}

.card--elevated {
  background: var(--color-surface-2);
}

/* ============================================================
   Stat card + number
   ============================================================ */

.stat-card {
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  position: relative;
}

.stat-number {
  font-family: var(--font-display);
  font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl));
  font-weight: var(--weight-semi);
  line-height: 1;
  letter-spacing: var(--tracking-display);
  color: var(--color-accent);
  margin-bottom: var(--space-3);
  display: block;
}

.stat-label {
  font-size: var(--text-base);
  color: var(--color-ink);
  line-height: var(--leading-snug);
  margin-bottom: var(--space-2);
}

.stat-source {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

/* ============================================================
   Nav
   ============================================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-4) 0;
  background: rgba(11, 13, 16, 0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.nav__brand {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-semi);
  letter-spacing: var(--tracking-wider);
  color: var(--color-ink);
  text-transform: uppercase;
}

.nav__links {
  display: flex;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__link {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  font-weight: var(--weight-medium);
}

@media (max-width: 768px) {
  .nav__links {
    display: none;
  }
}

/* ============================================================
   Footer
   ============================================================ */

.footer {
  padding: var(--space-9) 0 var(--space-7);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-7);
  margin-bottom: var(--space-8);
}

@media (max-width: 768px) {
  .footer__inner {
    grid-template-columns: 1fr 1fr;
  }
}

.footer__brand {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-semi);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.footer__tagline {
  color: var(--color-ink-muted);
  font-size: var(--text-sm);
  max-width: 24rem;
}

.footer__col-title {
  font-size: var(--text-xs);
  font-weight: var(--weight-semi);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-ink-muted);
  margin: 0 0 var(--space-4);
}

.footer__links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__links a {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.footer__bottom {
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  display: flex;
  justify-content: space-between;
}

/* ============================================================
   Trust bar
   ============================================================ */

.trust-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  justify-content: center;
  padding: var(--space-5) 0;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.trust-bar__item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.trust-bar__item::before {
  content: "✓";
  color: var(--color-accent);
}