/*
  Global design system for Zapusklab website — "Launch to space" dark theme.
  Expected HTML links:
  - Root pages: /styles/global.css
  - Nested pages: ../../styles/global.css

  Image URLs are resolved relative to THIS file (/styles/), so the same
  background works on every page regardless of directory depth.
*/

:root {
  color-scheme: dark;

  /* Brand (per-app accents, tuned to glow on deep space) */
  --color-genibee: #4fd1c5;
  --color-broomy: #a78bfa;
  --color-batchy: #6ea8fe;
  --color-readyberry: #ff6b6b;

  /* Cosmic accents */
  --color-accent: #5b8def;      /* launch blue */
  --color-accent-2: #22d3ee;    /* ion cyan */
  --color-accent-3: #a78bfa;    /* nebula violet */
  --color-accent-soft: color-mix(in srgb, var(--color-accent) 18%, transparent);

  /* Legacy aliases kept for cross-page consistency */
  --primary-green: var(--color-genibee);
  --text-dark: var(--color-text);
  --text-body: var(--color-text-secondary);
  --text-gray: var(--color-text-secondary);
  --white: var(--color-surface);
  --background: var(--color-bg-alt);

  /* Neutrals — deep space */
  --color-bg: #06060d;          /* void */
  --color-bg-alt: #0a0b16;      /* slightly raised band */
  --color-surface: #10121f;     /* card surface */
  --color-surface-2: #161a2b;   /* raised surface */
  --color-text: #f1f4fc;        /* star white */
  --color-text-secondary: #97a1bd;
  --color-border: #242a45;
  --color-text-strong: #0b0e1a; /* dark — used for device frames / dark gradients */
  --color-text-stronger: #05060d;
  --color-dark-surface: #11152a;
  --color-legal-soft: #0d1020;
  --color-warning-border: #5a2f2f;
  --color-warning-bg: #1c1113;
  --color-warning-text: #ffb4a8;
  --color-hero-app-start: #0a0c1a;
  --color-hero-landing-start: #080a14;

  /* Glass */
  --glass-bg: color-mix(in srgb, var(--color-surface) 62%, transparent);
  --glass-border: color-mix(in srgb, #ffffff 10%, transparent);
  --glass-blur: 16px;

  /* Typography */
  --font-family: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: "Space Grotesk", "DM Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-size-14: clamp(0.875rem, 0.84rem + 0.2vw, 0.95rem);
  --font-size-16: clamp(1rem, 0.96rem + 0.2vw, 1.1rem);
  --font-size-18: clamp(1.125rem, 1.05rem + 0.3vw, 1.25rem);
  --font-size-20: clamp(1.25rem, 1.1rem + 0.5vw, 1.5rem);
  --font-size-24: clamp(1.5rem, 1.2rem + 0.9vw, 2rem);
  --font-size-32: clamp(2rem, 1.4rem + 1.5vw, 2.75rem);
  --font-size-40: clamp(2.5rem, 1.8rem + 2vw, 3.5rem);
  --font-size-48: clamp(3rem, 2rem + 3vw, 3.75rem);
  --font-size-64: clamp(2.5rem, 1.4rem + 5vw, 4rem);

  /* Spacing (4px base) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-7: 1.75rem;
  --space-8: 2rem;
  --space-9: 2.25rem;
  --space-10: 2.5rem;
  --space-11: 2.75rem;
  --space-12: 3rem;
  --space-13: 3.25rem;
  --space-14: 3.5rem;
  --space-15: 3.75rem;
  --space-16: 4rem;

  /* Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1.25rem;
  --radius-full: 9999px;

  /* Shadows + glows (dark) — every glass surface picks up a 1px top-edge
     star-light highlight via the inset line in --shadow-subtle */
  --glass-highlight: inset 0 1px 0 rgb(255 255 255 / 0.07);
  --shadow-subtle: var(--glass-highlight), 0 1px 2px rgb(0 0 0 / 0.4), 0 6px 16px rgb(0 0 0 / 0.35);
  --shadow-medium: var(--glass-highlight), 0 10px 30px rgb(0 0 0 / 0.5), 0 2px 8px rgb(0 0 0 / 0.4);
  --shadow-large: var(--glass-highlight), 0 24px 60px rgb(0 0 0 / 0.6), 0 6px 18px rgb(0 0 0 / 0.45);
  --glow-accent: 0 0 0 1px color-mix(in srgb, var(--color-accent) 35%, transparent),
                 0 0 28px color-mix(in srgb, var(--color-accent) 35%, transparent);

  /* Motion — expo ease for a weightless, orbital feel */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-default: 0.3s var(--ease-out-expo);

  /* Layout */
  --container-width: 75rem;
  --section-padding: 5.5rem;
  --navbar-height: 4.5rem;
}

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

* {
  margin: 0;
  padding: 0;
}

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

body {
  position: relative;
  min-height: 100vh;
  font-family: var(--font-family);
  font-size: var(--font-size-16);
  font-weight: 400;
  line-height: 1.65;
  color: var(--color-text);
  background-color: var(--color-bg);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Deep-space backdrop: nebula image, fixed, behind everything */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 90% 60% at 50% -10%, color-mix(in srgb, var(--color-accent) 16%, transparent), transparent 60%),
    radial-gradient(ellipse 50% 40% at 85% 80%, color-mix(in srgb, var(--color-accent-3) 10%, transparent), transparent 65%),
    url("../assets/img/space-bg.png") center top / cover no-repeat,
    var(--color-bg);
  opacity: 0.85;
}

/* Aurora layer — two blurred color blobs drifting in slow orbit.
   The .aurora element is injected by main.js on every page (null-guarded,
   skipped when prefers-reduced-motion); pages render fine without it. */
.aurora {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.aurora::before,
.aurora::after {
  content: "";
  position: absolute;
  width: 55vmax;
  height: 55vmax;
  border-radius: var(--radius-full);
  filter: blur(70px);
  opacity: 0.1;
  will-change: transform;
}

.aurora::before {
  top: -20vmax;
  left: -12vmax;
  background: radial-gradient(circle at 40% 40%,
    var(--color-accent-2), var(--color-accent) 45%, transparent 70%);
  animation: aurora-drift-a 26s ease-in-out infinite alternate;
}

.aurora::after {
  bottom: -24vmax;
  right: -14vmax;
  background: radial-gradient(circle at 60% 60%,
    var(--color-accent-3), var(--color-accent) 50%, transparent 72%);
  animation: aurora-drift-b 32s ease-in-out infinite alternate;
}

@keyframes aurora-drift-a {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(10vmax, 6vmax, 0) scale(1.15); }
}

@keyframes aurora-drift-b {
  from { transform: translate3d(0, 0, 0) scale(1.1); }
  to   { transform: translate3d(-8vmax, -7vmax, 0) scale(0.95); }
}

/* Twinkling starfield overlay */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    radial-gradient(1.4px 1.4px at 12% 22%, #ffffff, transparent),
    radial-gradient(1.2px 1.2px at 78% 14%, #cfe0ff, transparent),
    radial-gradient(1px 1px at 33% 67%, #ffffff, transparent),
    radial-gradient(1.6px 1.6px at 64% 48%, #e6f0ff, transparent),
    radial-gradient(1px 1px at 88% 73%, #ffffff, transparent),
    radial-gradient(1.2px 1.2px at 47% 88%, #d4e4ff, transparent),
    radial-gradient(1px 1px at 6% 80%, #ffffff, transparent),
    radial-gradient(1.3px 1.3px at 22% 41%, #ffffff, transparent),
    radial-gradient(1px 1px at 92% 33%, #cfe0ff, transparent);
  background-size: 100% 100%;
  animation: twinkle 6s ease-in-out infinite alternate;
}

@keyframes twinkle {
  0%   { opacity: 0.35; }
  100% { opacity: 0.9; }
}

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

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

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

ul,
ol {
  list-style: none;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  text-wrap: balance;
}

.container {
  width: min(100% - 2rem, var(--container-width));
  margin-inline: auto;
}

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

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  color: var(--color-accent-2);
  font-family: var(--font-display);
  font-size: var(--font-size-14);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.section-label::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: var(--radius-full);
  background: var(--color-accent-2);
  box-shadow: 0 0 10px var(--color-accent-2);
}

.section-title {
  font-size: var(--font-size-40);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

.section-description {
  max-width: 37.5rem;
  color: var(--color-text-secondary);
  font-size: var(--font-size-18);
}

/* Navigation — glass */
.navbar {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1000;
  height: var(--navbar-height);
  border-bottom: 1px solid transparent;
  background: color-mix(in srgb, var(--color-bg) 55%, transparent);
  backdrop-filter: blur(var(--glass-blur)) saturate(140%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(140%);
  transition: box-shadow var(--transition-default), border-color var(--transition-default), background var(--transition-default);
}

.navbar.scrolled {
  border-color: var(--glass-border);
  background: color-mix(in srgb, var(--color-bg) 78%, transparent);
  box-shadow: 0 8px 30px rgb(0 0 0 / 0.45);
}

.navbar-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--font-size-20);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.nav-logo svg {
  flex-shrink: 0;
  color: var(--color-accent-2);
  filter: drop-shadow(0 0 6px color-mix(in srgb, var(--color-accent-2) 70%, transparent));
}

.nav-toggle {
  position: relative;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  background: var(--glass-bg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform var(--transition-default), border-color var(--transition-default), background var(--transition-default);
}

.nav-toggle:hover {
  border-color: color-mix(in srgb, var(--color-accent) 50%, transparent);
}

.nav-toggle-line {
  position: absolute;
  width: 1.125rem;
  height: 2px;
  background: var(--color-text);
  border-radius: var(--radius-full);
  transition: transform var(--transition-default), opacity var(--transition-default);
}

.nav-toggle-line:nth-child(1) { transform: translateY(-0.32rem); }
.nav-toggle-line:nth-child(2) { transform: translateY(0); }
.nav-toggle-line:nth-child(3) { transform: translateY(0.32rem); }
.nav-toggle.active .nav-toggle-line:nth-child(1) { transform: translateY(0) rotate(45deg); }
.nav-toggle.active .nav-toggle-line:nth-child(2) { opacity: 0; }
.nav-toggle.active .nav-toggle-line:nth-child(3) { transform: translateY(0) rotate(-45deg); }

.nav-menu {
  position: absolute;
  top: var(--navbar-height);
  left: 0;
  right: 0;
  max-height: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: color-mix(in srgb, var(--color-bg) 92%, transparent);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
  transition: max-height var(--transition-default), opacity var(--transition-default);
  opacity: 0;
}

.nav-menu.active {
  max-height: 18rem;
  opacity: 1;
}

.nav-menu a {
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 500;
  padding: var(--space-4);
  color: var(--color-text-secondary);
  transition: color var(--transition-default), background var(--transition-default);
}

.nav-menu a:hover,
.nav-menu a:focus-visible {
  color: var(--color-text);
  background: color-mix(in srgb, var(--color-accent) 12%, transparent);
}

/* Shared components */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-display);
  font-size: var(--font-size-16);
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: transform var(--transition-default), box-shadow var(--transition-default), background var(--transition-default), color var(--transition-default), border-color var(--transition-default);
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0) scale(0.97); }

.btn-primary {
  color: #ffffff;
  background: linear-gradient(120deg, var(--color-accent) 0%, var(--color-accent-3) 100%);
  box-shadow: var(--glow-accent);
}

.btn-primary:hover {
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--color-accent) 55%, transparent),
              0 0 40px color-mix(in srgb, var(--color-accent) 55%, transparent);
}

.btn-secondary {
  background: var(--glass-bg);
  color: var(--color-text);
  border-color: var(--glass-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  border-color: color-mix(in srgb, var(--color-accent) 50%, transparent);
  background: color-mix(in srgb, var(--color-accent) 12%, var(--glass-bg));
}

.btn-sm {
  min-height: 2.25rem;
  padding: 0.5rem 1rem;
  font-size: var(--font-size-14);
}

.card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-subtle);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-full);
  padding: 0.35rem 0.85rem;
  font-size: var(--font-size-14);
  font-weight: 600;
  color: var(--color-text);
  background: color-mix(in srgb, var(--color-accent) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-accent) 32%, transparent);
  transition: border-color var(--transition-default), background var(--transition-default), box-shadow var(--transition-default);
}

a.badge:hover {
  border-color: color-mix(in srgb, var(--color-accent) 55%, transparent);
  box-shadow: 0 0 18px color-mix(in srgb, var(--color-accent) 30%, transparent);
}

.app-icon {
  width: 4rem;
  height: 4rem;
  border-radius: 22%;
  object-fit: cover;
  box-shadow: var(--shadow-medium);
}

/* Scroll reveal — expo ease reads as a soft "arrival from orbit" */
.fade-in {
  --delay: 0ms;
  opacity: 0;
  transform: translateY(1.25rem);
  transition: opacity 0.7s var(--ease-out-expo) var(--delay), transform 0.7s var(--ease-out-expo) var(--delay);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Footer — dark glass */
.footer {
  position: relative;
  background: color-mix(in srgb, var(--color-bg) 70%, transparent);
  border-top: 1px solid var(--glass-border);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  color: var(--color-text);
  padding-top: var(--space-12);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  padding-bottom: var(--space-10);
}

.footer-title {
  font-size: var(--font-size-16);
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}

.footer-brand {
  font-family: var(--font-display);
  font-size: var(--font-size-24);
  font-weight: 700;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}

.footer-text,
.footer-link {
  color: var(--color-text-secondary);
  font-size: var(--font-size-14);
}

.footer-links {
  display: grid;
  gap: var(--space-2);
}

.footer-link {
  transition: color var(--transition-default);
}

.footer-link:hover,
.footer-link:focus-visible {
  color: var(--color-accent-2);
}

.footer-bottom {
  border-top: 1px solid var(--glass-border);
  padding-block: var(--space-4);
  text-align: center;
  font-size: var(--font-size-14);
  color: var(--color-text-secondary);
}

/* Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-10 { margin-top: var(--space-10); }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-5 { margin-bottom: var(--space-5); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-10 { margin-bottom: var(--space-10); }

/* Small mobile */
@media (max-width: 30rem) {
  :root {
    --section-padding: 4rem;
  }

  .container {
    width: min(100% - 1.25rem, var(--container-width));
  }

  .section-title {
    font-size: var(--font-size-32);
  }
}

/* Tablet and up */
@media (min-width: 48rem) {
  .container {
    width: min(100% - 3rem, var(--container-width));
  }

  .nav-toggle {
    display: none;
  }

  .nav-menu {
    position: static;
    max-height: none;
    opacity: 1;
    overflow: visible;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-bottom: 0;
    flex-direction: row;
    gap: var(--space-2);
  }

  .nav-menu a {
    justify-content: center;
    border-radius: var(--radius-full);
    padding: 0.5rem 0.9rem;
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* Desktop */
@media (min-width: 64rem) {
  .footer-grid {
    grid-template-columns: 1.25fr 1fr 1fr 1fr 1fr;
    gap: var(--space-10);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms;
    scroll-behavior: auto;
  }

  body::after {
    opacity: 0.6;
  }

  .aurora {
    display: none;
  }

  .fade-in,
  .fade-in.visible {
    opacity: 1;
    transform: none;
  }
}