/* The tablet's My files screen: paper grey, black ink, thin lines. */
:root {
  --paper: #f4f4f2; --ink: #141414; --ink-soft: #555; --line: #1a1a1a; --faint: #cfcfcb; --white: #fff;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 16px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  padding-bottom: 110px;
}
a { color: inherit; text-decoration: none; }
svg { fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* Header */
.top { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; height: 64px; padding: 0 28px; }
.brand { justify-self: center; display: inline-flex; align-items: center; gap: 9px; font-weight: 700; font-size: 20px; letter-spacing: -.01em; }
.status { justify-self: end; font-size: 14px; color: var(--ink-soft); display: inline-flex; align-items: center; gap: 7px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ink); display: inline-block; }
.menu { position: relative; justify-self: start; }
.menu summary { list-style: none; cursor: pointer; width: 32px; height: 32px; display: grid; place-items: center; }
.menu summary::-webkit-details-marker { display: none; }
.burger, .burger::before, .burger::after { display: block; width: 24px; height: 2.4px; background: var(--ink); border-radius: 2px; }
.burger { position: relative; }
.burger::before, .burger::after { content: ""; position: absolute; left: 0; }
.burger::before { top: -8px; } .burger::after { top: 8px; }
.menu nav {
  position: absolute; left: -6px; top: 42px; z-index: 5; min-width: 220px; background: var(--white);
  border: 1.5px solid var(--line); border-radius: 14px; padding: 8px; box-shadow: 0 12px 30px -16px rgba(0,0,0,.4);
}
.menu nav a, .menu nav .who { display: block; padding: 9px 14px; border-radius: 9px; font-size: 16px; }
.menu nav a:hover { background: var(--paper); }
.menu nav .who { color: var(--ink-soft); font-size: 13px; border-top: 1px solid var(--faint); margin-top: 6px; padding-top: 10px; }

/* Content */
main { max-width: 1120px; margin: 0 auto; padding: 8px 28px 0; }
.crumbs { margin: 6px 0 0; font-size: 15px; color: var(--ink-soft); }
.crumbs a:hover { text-decoration: underline; }
.crumbs span { margin: 0 8px; }
.heading { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin: 14px 0 26px; }
h1 { font-size: 36px; font-weight: 500; letter-spacing: -.02em; margin: 0; line-height: 1.15; }
.sort { position: relative; font-size: 17px; }
.sort summary { list-style: none; cursor: pointer; white-space: nowrap; }
.sort summary::-webkit-details-marker { display: none; }
.sort summary span { font-size: 15px; margin-left: 4px; }
.sort div { position: absolute; right: 0; top: 34px; z-index: 5; background: var(--white); border: 1.5px solid var(--line); border-radius: 12px; padding: 6px; min-width: 170px; }
.sort div a { display: block; padding: 8px 12px; border-radius: 8px; }
.sort div a.on::before { content: "✓ "; }
.sort div a:hover { background: var(--paper); }
.search { display: flex; gap: 8px; flex: 1; max-width: 520px; }
.search input { flex: 1; font: inherit; padding: 9px 14px; border: 1.5px solid var(--line); border-radius: 999px; background: var(--white); color: var(--ink); }
.search button { font: inherit; padding: 9px 18px; border: 1.5px solid var(--line); border-radius: 999px; background: var(--ink); color: var(--white); cursor: pointer; }

/* Folders */
.folders { list-style: none; margin: 0 0 30px; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px 24px; }
.folders a { display: flex; align-items: center; gap: 12px; font-size: 19px; padding: 4px 0; }
.folders a:hover span { text-decoration: underline; }
.folder { width: 30px; height: 30px; flex: none; fill: var(--ink); stroke: var(--ink); stroke-width: 1.5; }
.folder .lid { stroke: var(--paper); stroke-width: 1.2; }

/* Documents */
.docs { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 34px 34px; }
.docs a { display: block; }
.thumb {
  position: relative; display: block; aspect-ratio: 3 / 4; background: var(--white);
  border: 1.5px solid var(--line); border-radius: 3px; overflow: hidden;
}
.thumb img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: top left; }
.thumb::after {
  content: ""; position: absolute; top: -1px; right: -1px; width: 26px; height: 26px;
  background: linear-gradient(225deg, var(--paper) 0 49%, var(--line) 49% 55%, var(--white) 55%);
}
.docs a:hover .thumb { box-shadow: 0 0 0 1.5px var(--line); }
.name { display: block; margin-top: 12px; font-size: 18px; font-weight: 500; line-height: 1.25; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.pages { display: block; margin-top: 4px; font-size: 15px; min-height: 1.3em; }
.when { display: block; margin-top: 2px; font-size: 13px; color: var(--ink-soft); }
.empty { color: var(--ink-soft); font-size: 18px; margin: 40px 0; }

/* Floating toolbar */
.pill {
  position: fixed; left: 50%; bottom: 26px; transform: translateX(-50%); z-index: 4;
  display: flex; gap: 6px; padding: 6px; background: var(--paper); border: 1.8px solid var(--line); border-radius: 999px;
  box-shadow: 0 10px 30px -14px rgba(0,0,0,.45);
}
.pill a { width: 58px; height: 52px; display: grid; place-items: center; border-radius: 999px; }
.pill a:hover { background: var(--white); }
.pill svg { width: 28px; height: 28px; stroke-width: 1.7; }

/* Sign in */
.login { max-width: 440px; margin: 12vh auto 0; text-align: center; padding: 0 16px; }
.login h1 { font-size: 30px; margin: 14px 0 10px; }
.login p { color: var(--ink-soft); margin: 0 0 22px; }
.button { display: inline-block; background: var(--ink); color: var(--white); padding: 12px 26px; border-radius: 999px; font-weight: 600; }
.error { color: #8a1c14; border: 1px solid #8a1c14; border-radius: 10px; padding: 8px 12px; }
.small { font-size: 13px; margin-top: 18px; }

@media (max-width: 900px) {
  .folders, .docs { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 600px) {
  .top { padding: 0 16px; height: 56px; }
  .brand { font-size: 17px; }
  .status { display: none; }
  main { padding: 4px 16px 0; }
  h1 { font-size: 28px; }
  .folders { grid-template-columns: repeat(2, 1fr); gap: 10px 16px; }
  .folders a { font-size: 16px; }
  .docs { grid-template-columns: repeat(2, 1fr); gap: 22px 18px; }
  .name { font-size: 15px; }
  .pages { font-size: 13px; }
}