:root {
  --paper: #dce6ff;
  --paper-alt: #eef3ff;
  --ink: #151937;
  --frame: #28346d;
  --line: #7f92e0;
  --accent: #ff6f3a;
  --accent-deep: #b83d12;
  --teal: #1fa5a0;
  --code-bg: #041225;
  --code-ink: #8df7ff;
  --code-line: #214164;
  --shadow: 6px 6px 0 var(--frame);
}

* {
  box-sizing: border-box;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 4rem;
}

body {
  min-height: 100vh;
  color: var(--ink);
  font-family: "VT323", "Courier New", monospace;
  font-size: 1.32rem;
  line-height: 1.35;
  letter-spacing: 0.02em;
  background:
    radial-gradient(circle at 12% 8%, rgba(236, 245, 255, 0.95) 0, rgba(236, 245, 255, 0) 28%),
    radial-gradient(circle at 86% 82%, rgba(121, 159, 255, 0.32) 0, rgba(121, 159, 255, 0) 25%),
    repeating-linear-gradient(0deg, rgba(33, 50, 112, 0.06) 0 1px, rgba(33, 50, 112, 0) 1px 24px),
    linear-gradient(180deg, #edf3ff 0%, var(--paper) 100%);
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.12;
  background-image: radial-gradient(rgba(33, 52, 109, 0.32) 0.75px, transparent 0.75px);
  background-size: 6px 6px;
  z-index: 0;
}

.bg-orb {
  position: fixed;
  pointer-events: none;
  z-index: 0;
}

.bg-orb-a {
  width: 420px;
  height: 420px;
  top: -150px;
  right: -110px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 111, 58, 0.23), rgba(255, 111, 58, 0));
}

.bg-orb-b {
  width: 360px;
  height: 360px;
  left: -80px;
  bottom: -120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(31, 165, 160, 0.24), rgba(31, 165, 160, 0));
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 35;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1rem;
  background: linear-gradient(180deg, var(--paper-alt), #d5e2ff);
  border-bottom: 3px solid var(--frame);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.62rem;
  color: var(--ink);
  text-decoration: none;
  font-family: "Press Start 2P", monospace;
  font-size: 0.68rem;
}

.brand-mark {
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border: 2px solid #17235a;
  background: linear-gradient(180deg, #7ea8ff, #4d73dd);
  color: #eaf0ff;
  box-shadow: 2px 2px 0 #17235a;
  font-size: 0.8rem;
}

.topnav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.topnav a {
  color: var(--ink);
  text-decoration: none;
  font-family: "Press Start 2P", monospace;
  font-size: 0.55rem;
  background: #f3f6ff;
  border: 2px solid #4b63bb;
  box-shadow: 2px 2px 0 #4b63bb;
  padding: 0.4rem 0.5rem;
  transition: transform 0.14s ease, background-color 0.14s ease;
}

.topnav a:hover,
.topnav a.active {
  background: #dfe8ff;
  transform: translateY(-1px);
}

.menu-toggle {
  display: none;
  border: 2px solid #4b63bb;
  background: #f3f6ff;
  color: var(--ink);
  font-family: "Press Start 2P", monospace;
  font-size: 0.52rem;
  padding: 0.45rem 0.6rem;
  box-shadow: 2px 2px 0 #4b63bb;
}

main,
.site-footer {
  position: relative;
  z-index: 1;
  width: min(980px, calc(100% - 1.7rem));
  margin-left: auto;
  margin-right: auto;
}

main {
  padding-bottom: 2.6rem;
}

.hero {
  padding: 3.1rem 0 1.8rem;
}

.kicker {
  margin: 0;
  display: inline-block;
  padding: 0.35rem 0.6rem;
  border: 2px solid var(--frame);
  color: #0f5f5b;
  background: #c2f4ed;
  font-family: "Press Start 2P", monospace;
  font-size: 0.5rem;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.35;
  font-family: "Press Start 2P", monospace;
  text-transform: uppercase;
}

h1 {
  margin: 0.85rem 0 1rem;
  font-size: clamp(1.05rem, 2.7vw, 1.7rem);
  max-width: 24ch;
}

h2 {
  font-size: clamp(0.75rem, 1.7vw, 1rem);
  margin-bottom: 0.9rem;
}

h3 {
  font-size: clamp(0.58rem, 1.3vw, 0.72rem);
  margin-bottom: 0.65rem;
}

.lead {
  max-width: 60ch;
  color: #1f2854;
  font-size: 1.2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-family: "Press Start 2P", monospace;
  font-size: 0.56rem;
  padding: 0.6rem 0.8rem;
  border: 2px solid #17235a;
  box-shadow: 3px 3px 0 #17235a;
  color: #121e4e;
}

.btn:active {
  transform: translate(1px, 1px);
  box-shadow: 2px 2px 0 #17235a;
}

.btn-primary {
  background: linear-gradient(180deg, #ff9f65, var(--accent));
  color: #291104;
}

.btn-ghost {
  background: #eef3ff;
}

.panel {
  background: linear-gradient(180deg, rgba(244, 248, 255, 0.95), rgba(222, 233, 255, 0.92));
  border: 3px solid var(--frame);
  padding: 1.2rem;
  box-shadow: var(--shadow);
  margin-top: 1rem;
}

.grid {
  display: grid;
  gap: 0.9rem;
}

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

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid article {
  border: 2px solid #4b63bb;
  background: #f8faff;
  padding: 0.7rem;
  box-shadow: 3px 3px 0 rgba(29, 44, 97, 0.4);
}

.steps {
  margin: 0;
  padding-left: 1.15rem;
}

.steps li {
  margin-bottom: 1rem;
}

.code-wrap {
  position: relative;
  background: var(--code-bg);
  border: 3px solid #24527c;
  color: var(--code-ink);
  padding: 0.75rem;
  overflow-x: auto;
  overflow-y: hidden;
}

.code-wrap::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    180deg,
    rgba(141, 247, 255, 0.09) 0px,
    rgba(141, 247, 255, 0.09) 1px,
    rgba(141, 247, 255, 0) 1px,
    rgba(141, 247, 255, 0) 4px
  );
  mix-blend-mode: screen;
}

.code-wrap.compact {
  min-height: 0;
}

pre {
  margin: 0;
  overflow-x: auto;
  padding-right: 3.2rem;
}

code,
pre {
  font-family: "VT323", "Courier New", monospace;
  font-size: 1.18rem;
  line-height: 1.2;
}

p code {
  background: #dbe5ff;
  color: #1b2f78;
  border: 1px solid #7c91e8;
  padding: 0.02rem 0.35rem;
}

.copy-btn {
  position: absolute;
  right: 0.45rem;
  top: 0.45rem;
  border: 2px solid #1a4f6a;
  background: #8df7ff;
  color: #051622;
  font-family: "Press Start 2P", monospace;
  font-size: 0.47rem;
  padding: 0.28rem 0.42rem;
  box-shadow: 2px 2px 0 #1a4f6a;
  cursor: pointer;
  z-index: 1;
}

.copy-btn[data-copied="true"] {
  background: #ffd089;
  border-color: #a75f18;
  box-shadow: 2px 2px 0 #a75f18;
}

.tab-controls {
  display: inline-flex;
  gap: 0.4rem;
  background: #eaf0ff;
  border: 2px solid #4b63bb;
  padding: 0.3rem;
  margin-bottom: 0.75rem;
}

.tab-btn {
  border: 2px solid #4b63bb;
  background: #f3f6ff;
  color: #1f2e68;
  font-family: "Press Start 2P", monospace;
  font-size: 0.5rem;
  padding: 0.34rem 0.5rem;
  cursor: pointer;
}

.tab-btn.active {
  background: #28346d;
  color: #eef3ff;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

#commands .grid {
  display: block;
  column-count: 2;
  column-gap: 0.9rem;
}

#commands .grid article {
  display: inline-block;
  width: 100%;
  margin: 0 0 0.9rem;
  break-inside: avoid;
}

#commands .grid article p {
  margin-top: 0;
  margin-bottom: 0.7rem;
}

.hint {
  margin: 0.6rem 0 0;
  color: #263775;
}

.site-footer {
  padding-bottom: 2.2rem;
}

.site-footer p {
  border: 2px solid #4b63bb;
  background: #edf2ff;
  padding: 0.75rem;
  box-shadow: 3px 3px 0 rgba(29, 44, 97, 0.4);
}

.site-footer a {
  color: #1d2f75;
  font-family: "Press Start 2P", monospace;
  font-size: 0.5rem;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
}

.reveal.visible {
  animation: rise 0.45s steps(6, end) forwards;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

  #commands .grid {
    column-count: 1;
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
  }

  .topnav {
    position: absolute;
    right: 0.75rem;
    top: calc(100% + 0.3rem);
    background: #eef3ff;
    border: 2px solid #4b63bb;
    box-shadow: 4px 4px 0 rgba(29, 44, 97, 0.5);
    padding: 0.55rem;
    flex-direction: column;
    align-items: flex-start;
    min-width: 200px;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-6px);
    transition: opacity 0.16s ease, transform 0.16s ease;
  }

  .topnav.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .hero {
    padding-top: 2.45rem;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 1.15rem;
  }

  main,
  .site-footer {
    width: calc(100% - 1.2rem);
  }

  .panel {
    padding: 0.75rem;
    box-shadow: 3px 3px 0 var(--frame);
  }

  .btn {
    width: 100%;
  }

  h1 {
    font-size: clamp(0.9rem, 4vw, 1.2rem);
    max-width: 100%;
  }

  h2 {
    font-size: clamp(0.68rem, 3vw, 0.85rem);
  }

  h3 {
    font-size: 0.6rem;
  }

  .hero {
    padding: 1.8rem 0 1.2rem;
  }

  .kicker {
    font-size: 0.42rem;
  }

  .lead {
    font-size: 1.1rem;
  }

  pre {
    padding-right: 0;
    padding-bottom: 2.2rem;
  }

  .copy-btn {
    top: auto;
    bottom: 0.45rem;
    right: 0.45rem;
  }

  .steps {
    padding-left: 0.9rem;
  }

  .tab-controls {
    display: flex;
    flex-wrap: wrap;
  }

  p code {
    word-break: break-word;
  }

  .grid article {
    box-shadow: 2px 2px 0 rgba(29, 44, 97, 0.4);
    min-width: 0;
  }

  .grid article .code-wrap {
    max-width: 100%;
    overflow-x: auto;
  }

  #storage pre,
  #storage code {
    white-space: pre-wrap;
    word-break: break-all;
  }
}

@media (max-width: 380px) {
  body {
    font-size: 1.08rem;
  }

  .topbar {
    padding: 0.65rem 0.75rem;
  }

  .brand {
    font-size: 0.58rem;
  }

  .panel {
    padding: 0.6rem;
    box-shadow: 2px 2px 0 var(--frame);
  }

  .steps {
    padding-left: 0.7rem;
  }

  pre {
    font-size: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}