/* Kaflow LLC - classic Mac OS (System 7) chrome */

:root {
  --ink: #000000;
  --paper: #ffffff;
  --desktop-a: #989898;
  --desktop-b: #8b8b8b;
  --muted: #555555;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  font-family: Geneva, Verdana, "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink);
  background: repeating-conic-gradient(var(--desktop-a) 0% 25%, var(--desktop-b) 0% 50%) 0 0 / 4px 4px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a { color: var(--ink); }
a:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }

/* ---------- Splash ---------- */

.splash {
  position: fixed;
  inset: 0;
  z-index: 5;
  background: repeating-conic-gradient(var(--desktop-a) 0% 25%, var(--desktop-b) 0% 50%) 0 0 / 4px 4px;
  display: grid;
  place-items: center;
  animation: splash-out 0.25s ease 0.85s forwards;
}

.splash-window {
  background: var(--paper);
  border: 1px solid var(--ink);
  box-shadow: 2px 2px 0 var(--ink);
  padding: 18px 24px;
}

.splash-text {
  margin-bottom: 12px;
  font-family: Charcoal, Chicago, "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 14px;
  font-weight: 700;
}

.splash-bar {
  width: 220px;
  height: 14px;
  border: 1px solid var(--ink);
  padding: 2px;
}

.splash-fill {
  height: 100%;
  width: 0;
  background: repeating-linear-gradient(
    90deg,
    var(--ink) 0 18px,
    var(--paper) 18px 20px
  );
  animation: splash-load 0.7s steps(11, end) forwards;
}

@keyframes splash-load {
  to { width: 100%; }
}

@keyframes splash-out {
  to { opacity: 0; visibility: hidden; }
}

@media (prefers-reduced-motion: reduce) {
  .splash { display: none; }
}

/* ---------- Menu bar ---------- */

.menubar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  height: 30px;
  padding: 0 10px 0 0;
  background: var(--paper);
  border-bottom: 1px solid var(--ink);
  font-size: 13px;
}

.menubar a {
  text-decoration: none;
  padding: 5px 10px;
  white-space: nowrap;
}

.menubar a:hover,
.menubar a:focus-visible {
  background: var(--ink);
  color: var(--paper);
  outline: none;
}

.menubar .app-name {
  font-family: Charcoal, Chicago, "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.menubar .glyph {
  display: grid;
  place-items: center;
  align-self: stretch;
  width: 34px;
  padding: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: Charcoal, Chicago, "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
}

.menubar .glyph:hover,
.menubar .glyph:focus-visible {
  background: var(--paper);
  color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--ink);
}

/* ---------- Desktop & windows ---------- */

.desktop {
  flex: 1;
  padding: 44px 16px 16px;
}

.window {
  background: var(--paper);
  border: 1px solid var(--ink);
  box-shadow: 2px 2px 0 var(--ink);
  max-width: 640px;
  margin: 0 auto 30px;
  scroll-margin-top: 48px;
}

.window.doc { max-width: 680px; }

.titlebar {
  position: relative;
  display: flex;
  align-items: center;
  height: 25px;
  padding: 0 8px;
  border-bottom: 1px solid var(--ink);
  background: var(--paper);
}

.titlebar .stripes {
  position: absolute;
  inset: 5px 8px;
  background: repeating-linear-gradient(
    to bottom,
    var(--ink) 0 1px,
    transparent 1px 3px
  );
}

.titlebar .closebox {
  position: relative;
  width: 13px;
  height: 13px;
  border: 1px solid var(--ink);
  background: var(--paper);
  box-shadow: 0 0 0 3px var(--paper);
}

.titlebar .title {
  position: relative;
  margin: 0 auto;
  padding: 0 12px;
  background: var(--paper);
  font-family: Charcoal, Chicago, "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 14px;
  font-weight: 700;
}

.window-body {
  padding: 22px 24px;
}

.window-body p { max-width: 60ch; }
.window-body p + p { margin-top: 12px; }

.window-body h1 {
  font-family: Charcoal, Chicago, "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 21px;
  line-height: 1.3;
  text-wrap: balance;
  margin-bottom: 12px;
}

.window-body h2 {
  font-size: 15px;
  margin: 18px 0 3px;
}

.window-body h2:first-child { margin-top: 0; }

.window-body ul {
  padding-left: 22px;
  max-width: 58ch;
}

.window-body li + li { margin-top: 6px; }

.window-body hr {
  border: 0;
  border-top: 1px solid var(--ink);
  margin: 18px 0;
}

.effective {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 16px;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  font: inherit;
  font-weight: 700;
  padding: 6px 18px;
  margin: 14px 4px 4px;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--ink);
  border-radius: 7px;
  text-decoration: none;
}

.btn:hover { background: var(--ink); color: var(--paper); }

.btn.default {
  box-shadow: 0 0 0 2px var(--paper), 0 0 0 3.5px var(--ink);
}

/* ---------- Apps list ---------- */

.finderbar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 11px;
  padding: 3px 12px;
  border-bottom: 1px solid var(--ink);
}

.app-row {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 6px 0;
}

/* pixel-art app mark, inline SVG */
.app-icon {
  flex: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--ink);
  display: grid;
  place-items: center;
}

.app-icon svg {
  width: 24px;
  height: 28px;
  color: var(--ink);
}

.app-name-line {
  font-family: Charcoal, Chicago, "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px;
  font-weight: 700;
}

.app-status {
  font-size: 12px;
  color: var(--muted);
}

/* ---------- How We Build ---------- */

.meter { font-size: 13px; margin-top: 3px; }

.meter .bar {
  font-family: Menlo, Monaco, "Courier New", monospace;
  font-size: 12px;
}

/* ---------- Control Panel ---------- */

.checks {
  margin-top: 14px;
  display: grid;
  gap: 10px;
}

.check {
  display: flex;
  align-items: center;
  gap: 9px;
}

.check .box {
  flex: none;
  width: 13px;
  height: 13px;
  border: 1px solid var(--ink);
  background: var(--paper);
  display: grid;
  place-items: center;
  font-size: 10px;
  line-height: 1;
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 4px;
}

/* ---------- Get Info panel ---------- */

.info {
  display: grid;
  grid-template-columns: 110px 1fr;
  column-gap: 14px;
  row-gap: 7px;
}

.info dt {
  font-weight: 700;
  text-align: right;
}

.info dd { margin: 0; }

@media (max-width: 420px) {
  .info { grid-template-columns: 1fr; row-gap: 2px; }
  .info dt { text-align: left; }
  .info dd { margin-bottom: 8px; }
}

/* ---------- Footer status bar ---------- */

.statusbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 4px 18px;
  background: var(--paper);
  border-top: 1px solid var(--ink);
  padding: 8px 16px;
  font-size: 12px;
}

/* ---------- Large screens ---------- */

@media (min-width: 561px) {
  body { font-size: 16px; }
  .menubar { height: 32px; font-size: 14px; }
  .desktop { padding: 56px 24px 32px; }
  .window { margin-bottom: 42px; }
  .window-body { padding: 30px 34px; }
  .finderbar { font-size: 12px; padding: 4px 14px; }
  .window-body h1 { font-size: 25px; margin-bottom: 14px; }
  .window-body h2 { font-size: 17px; margin: 22px 0 4px; }
  .window-body h2:first-child { margin-top: 0; }
  .app-name-line { font-size: 17px; }
  .app-status { font-size: 13px; }
  .meter { font-size: 14px; }
  .effective { font-size: 13px; }
  .statusbar { font-size: 13px; padding: 9px 20px; }
}

/* ---------- Small screens ---------- */

@media (max-width: 560px) {
  .menubar { padding: 0 6px 0 0; }
  .menubar a { padding: 5px 9px; }
  .menubar .glyph { padding: 0; }

  .desktop { padding: 30px 12px 12px; }
  .window { margin-bottom: 24px; }
  .window-body { padding: 18px; }
  .window-body h1 { font-size: 19px; }

  .statusbar {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 3px;
  }
}