/* Rescriva Share. Paper and ink, like the app (scanner/Design/RescrivaTheme.swift):
   warm paper stock with a little grain, carbon type, indigo ink for actions, and one
   highlighter for whatever needs a look. In the dark the paper becomes a chalkboard.
   Headings are New York (Georgia elsewhere); the interface stays sans. Vermilion is
   for destructive actions alone, and this page has none, so nothing here is red. */

:root {
  /* Paper */
  --stock: #F5F2EA;                 /* page */
  --vellum: #FDFBF6;                /* cards */
  --carbon: #1D2233;                /* text */
  --graphite: #676C7A;              /* secondary text */
  --ink: #2B3B8C;                   /* primary actions, links */
  --blue-pencil: #5A7BD0;           /* progress, focus */
  --wash: #E3E7F4;                  /* soft accent fills */
  --vermilion: #CF4326;             /* destructive only */
  --highlighter: #F6C823;           /* flags */
  --marker-ink: #B88A00;            /* the highlighter as a line or an icon */
  --rim: rgb(29 34 51 / 18%);       /* control hairlines */
  --hairline: rgb(29 34 51 / 8%);   /* card edges, rules */
  --tint: rgb(29 34 51 / 6%);       /* empty tracks, the QR while it waits */
  --dot: rgb(29 34 51 / 13%);       /* the empty state's dot grid */
  --flag: rgb(246 200 35 / 34%);    /* the highlighter laid over paper */
  --select: rgb(246 200 35 / 45%);
  --flap: #EBEAE6;                  /* the back of a card's folded corner */
  --crease: rgb(29 34 51 / 22%);    /* the fold's crease */
  --paper: #FFFDF8;                 /* page white in either appearance (the QR) */
  --print-ink: #1D2233;             /* printed type in either appearance (the QR) */
  --shade: 29 34 51;
  --shadow-card: 0 1px 2px rgb(var(--shade) / 10%), 0 5px 18px rgb(var(--shade) / 6%);
  --shadow-float: 0 8px 28px rgb(var(--shade) / 14%), 0 1px 4px rgb(var(--shade) / 8%);
  --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .11 0 0 0 0 .13 0 0 0 0 .2 0 0 0 .42 -.17'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23g)'/%3E%3C/svg%3E");
  /* A hand-inked underline: swells through the middle, lifts to the right. */
  --ink-stroke: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 10' preserveAspectRatio='none'%3E%3Cpath d='M0 5.5C28 1 66-.2 100 1v4C70 7.8 32 10.5.4 9.5z'/%3E%3C/svg%3E");

  --radius-chip: 7px;
  --radius-control: 11px;
  --radius-card: 12px;
  --radius-sheet: 22px;
  --fold: 14px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);

  --ui: -apple-system, BlinkMacSystemFont, "DM Sans", "Segoe UI", system-ui, sans-serif;
  --serif: ui-serif, "New York", Georgia, serif;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    /* Chalkboard */
    --stock: #222625;
    --vellum: #2C302F;
    --carbon: #ECE9E1;
    --graphite: #A3A79F;
    --ink: #A9BAF2;
    --blue-pencil: #87A1EA;
    --wash: #343A4C;
    --vermilion: #F0866B;
    --highlighter: #F2D660;
    --marker-ink: #F2D660;
    --rim: rgb(236 233 225 / 45%);
    --hairline: rgb(236 233 225 / 9%);
    --tint: rgb(236 233 225 / 8%);
    --dot: rgb(236 233 225 / 12%);
    --flag: rgb(242 214 96 / 18%);
    --select: rgb(242 214 96 / 32%);
    --flap: #3B3F3D;
    --crease: rgb(236 233 225 / 20%);
    --shade: 0 0 0;
    --shadow-card: 0 1px 2px rgb(0 0 0 / 30%), 0 6px 18px rgb(0 0 0 / 16%);
    --shadow-float: 0 10px 30px rgb(0 0 0 / 40%), 0 1px 4px rgb(0 0 0 / 30%);
    --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .93 0 0 0 0 .91 0 0 0 0 .88 0 0 0 .2 -.08'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23g)'/%3E%3C/svg%3E");
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--stock);
  background-image: var(--grain);
  color: var(--carbon);
  font: 16px/1.5 var(--ui);
  -webkit-font-smoothing: antialiased;
  padding: 0 max(16px, env(safe-area-inset-right)) env(safe-area-inset-bottom) max(16px, env(safe-area-inset-left));
}

::selection { background: var(--select); }

a {
  color: var(--ink);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: color-mix(in srgb, currentColor 45%, transparent);
}
a:hover { text-decoration-color: currentColor; }
a:focus-visible { outline: 2px solid var(--blue-pencil); outline-offset: 2px; border-radius: 3px; }

b { font-weight: 600; }
h1, h2 { font-family: var(--serif); font-weight: 500; line-height: 1.2; margin: 0; }
.muted { color: var(--graphite); }
.small { font-size: 14px; }
[hidden] { display: none !important; }

/* A flag: the highlighter laid over the words. */
.warn {
  color: var(--carbon);
  background: var(--flag);
  border-radius: var(--radius-chip);
  padding: 8px 11px;
}

/* MARK: Header */

.top {
  max-width: 1080px;
  margin: 0 auto;
  padding: 30px 0 10px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 14px 22px;
}

.brand { color: inherit; text-decoration: none; display: inline-flex; align-items: baseline; gap: 10px; }
.brand:focus-visible { outline-offset: 6px; }
.wordmark {
  position: relative;
  font: 600 30px/1 var(--serif);
  letter-spacing: -0.01em;
  color: var(--carbon);
}
.wordmark::after {
  content: "";
  position: absolute;
  left: 1px;
  right: 3px;
  bottom: -7px;
  height: 4px;
  background: var(--ink);
  -webkit-mask: var(--ink-stroke) center / 100% 100% no-repeat;
  mask: var(--ink-stroke) center / 100% 100% no-repeat;
}
.product {
  font: 600 11px/1 var(--ui);
  letter-spacing: 0.9px;
  text-transform: uppercase;
  color: var(--ink);
}

.status { margin: 0; color: var(--graphite); font-size: 15px; }
.status[data-tone="warn"] {
  color: var(--carbon);
  background: var(--flag);
  border-radius: var(--radius-chip);
  padding: 2px 9px;
}

/* MARK: Layout */

.layout {
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px 0 36px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 24px;
  align-items: start;
}

.link-mode .layout { grid-template-columns: minmax(0, 640px); justify-content: center; }
.link-mode .pair { display: none; }

@media (max-width: 860px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
}

.section-title { font-size: 26px; margin-bottom: 14px; }

/* A sheet of vellum with its top-right corner folded over, a hairline edge and a
   paper-on-a-desk shadow. The clip cuts the corner off the sheet (shadow included),
   and ::after lays the back of the fold on top. */
.card {
  position: relative;
  background: var(--vellum);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 20px;
  clip-path: polygon(
    -40px -40px,
    calc(100% - var(--fold)) -40px,
    calc(100% - var(--fold)) 0,
    100% var(--fold),
    calc(100% + 40px) var(--fold),
    calc(100% + 40px) calc(100% + 40px),
    -40px calc(100% + 40px)
  );
}
.card::after {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  width: var(--fold);
  height: var(--fold);
  background:
    linear-gradient(to bottom left, transparent 48.5%, var(--crease) 50%, var(--crease) 51.5%, transparent 53.5%),
    linear-gradient(to bottom left, transparent 48%, var(--flap) 48%);
  border-bottom-left-radius: 2.5px;
  filter: drop-shadow(-0.6px 1px 0.9px rgb(var(--shade) / 22%));
  pointer-events: none;
}

.device-list { display: grid; gap: 16px; }

/* Empty states sit on a faint dot grid, like a bullet-journal page. */
.empty {
  background-image: radial-gradient(circle, var(--dot) 0.8px, transparent 1.3px);
  background-size: 18px 18px;
  background-position: 9px 9px;
}
.empty h2 { font-size: 22px; margin-bottom: 8px; }
.empty p { margin: 6px 0; max-width: 54ch; }
.empty p.muted { font-family: var(--serif); font-style: italic; font-size: 15px; }

/* MARK: Device */

.device.connecting { opacity: 0.75; }
.device.dropping { box-shadow: inset 0 0 0 2px var(--blue-pencil), var(--shadow-card); }

.device-head { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.device-icon {
  width: 44px; height: 44px; flex: none;
  display: grid; place-items: center;
  background: var(--wash);
  color: var(--ink);
  border-radius: var(--radius-control);
}
.device-icon svg { width: 24px; height: 24px; }
.device-name { font-size: 22px; overflow-wrap: anywhere; }

.badge {
  display: inline-block;
  margin-top: 6px;
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 500;
  line-height: 18px;
  color: var(--graphite);
  border-radius: var(--radius-chip);
  box-shadow: inset 0 0 0 1px var(--rim);
}
.badge:empty { display: none; }
.badge[data-tone="good"] { color: var(--ink); background: var(--wash); box-shadow: none; }

/* Files read as a listing: rows ruled with hairlines. */
.docs, .uploads { list-style: none; margin: 0; padding: 0; }
.docs:not(:empty) { border-bottom: 1px solid var(--hairline); }
.doc, .upload { padding: 12px 0; border-top: 1px solid var(--hairline); }

.doc-line { display: flex; align-items: center; gap: 12px; }
.doc-text { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.doc-name, .upload-name { font-weight: 500; overflow-wrap: anywhere; }

.icon { display: inline-grid; place-items: center; width: 22px; height: 22px; flex: none; color: var(--graphite); }
.icon svg { width: 100%; height: 100%; }
.doc-line > .icon, .upload > .icon { width: 26px; height: 26px; }
.doc[data-locked="false"] .doc-line > .icon { color: var(--ink); }

.doc-message { margin: 8px 0 0; color: var(--graphite); }
.doc-message:empty { display: none; }

.pin-form { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.pin-input, .code-input {
  font: 500 20px/1.2 var(--ui);
  letter-spacing: 0.12em;
  font-variant-numeric: tabular-nums;
  padding: 9px 12px;
  border: 1px solid var(--rim);
  border-radius: var(--radius-control);
  background: var(--stock);
  color: var(--carbon);
  min-width: 0;
  transition: border-color 150ms var(--ease), box-shadow 150ms var(--ease);
}
.pin-input::placeholder, .code-input::placeholder { color: var(--graphite); opacity: 0.6; }
.pin-input { width: 9.5ch; text-align: center; }
.pin-input:focus, .code-input:focus {
  outline: 2px solid transparent; /* shows in forced colours */
  border-color: var(--ink);
  box-shadow: 0 0 0 3px var(--wash);
}

.send { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin-top: 16px; }
.uploads:not(:empty) { margin-top: 12px; }
.upload { display: flex; gap: 12px; align-items: flex-start; }
.upload-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 4px; }
.upload[data-state="saved"] .icon { color: var(--ink); }
.upload[data-state="declined"] .icon, .upload[data-state="failed"] .icon { color: var(--marker-ink); }
.upload[data-state="declined"] .muted, .upload[data-state="failed"] .muted {
  align-self: flex-start;
  color: var(--carbon);
  background: var(--flag);
  border-radius: 4px;
  padding: 0 5px;
  margin-left: -5px;
}

.progress { height: 4px; border-radius: 2px; background: var(--tint); overflow: hidden; margin-top: 10px; }
.upload .progress { margin-top: 2px; }
.progress-fill { display: block; height: 100%; width: 0; background: var(--blue-pencil); border-radius: 2px; transition: width 150ms var(--ease); }

/* MARK: Buttons */

.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  min-height: 40px;
  font: 500 15px/1 var(--ui);
  padding: 0 15px;
  border: none;
  border-radius: var(--radius-control);
  background: var(--ink);
  color: var(--vellum);
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 150ms var(--ease), opacity 150ms var(--ease);
}
.button { max-width: 100%; }
.button > span:last-child { min-width: 0; overflow: hidden; text-overflow: ellipsis; } /* a long device name */
.button .icon { color: inherit; width: 18px; height: 18px; }
.button:hover:not(:disabled) { background: color-mix(in srgb, var(--ink) 86%, var(--carbon)); }
.button:active:not(:disabled) { background: color-mix(in srgb, var(--ink) 76%, var(--carbon)); }
.button:focus-visible { outline: 2px solid var(--blue-pencil); outline-offset: 2px; }
.button:disabled { opacity: 0.45; cursor: default; }

/* Second to the ink: a wash of it. */
.button.quiet,
.doc[data-locked="true"] .doc-line .button { background: var(--wash); color: var(--ink); }
.button.quiet:hover:not(:disabled),
.doc[data-locked="true"] .doc-line .button:hover:not(:disabled) { background: color-mix(in srgb, var(--wash) 88%, var(--ink)); }
.button.quiet:active:not(:disabled),
.doc[data-locked="true"] .doc-line .button:active:not(:disabled) { background: color-mix(in srgb, var(--wash) 78%, var(--ink)); }

/* MARK: Pairing */

.pair h2 { font-size: 22px; margin-bottom: 16px; }
.qr {
  background: var(--paper);
  border-radius: var(--radius-card);
  box-shadow: 0 0 0 1px var(--hairline);
  padding: 8px;
  aspect-ratio: 1;
  max-width: 260px;
  margin: 0 auto;
  display: grid;
}
.qr svg { width: 100%; height: 100%; display: block; border-radius: 4px; }
.qr.waiting { background: var(--tint); box-shadow: none; animation: breathe 1.6s ease-in-out infinite; }
@keyframes breathe { 50% { opacity: 0.5; } }

.steps { padding-left: 22px; margin: 18px 0 16px; font-size: 15px; }
.steps li { padding-left: 2px; }
.steps li + li { margin-top: 6px; }
.steps li::marker { color: var(--ink); font-family: var(--serif); font-weight: 600; }

.code-form { border-top: 1px solid var(--hairline); padding-top: 16px; margin-top: 4px; }
.code-form label { display: block; font-size: 14px; margin-bottom: 8px; }
.code-row { display: flex; gap: 8px; }
.code-input { flex: 1; font-size: 17px; text-transform: uppercase; }
/* The placeholder is words, not a code: no capitals or code spacing. */
.code-input::placeholder { text-transform: none; letter-spacing: normal; }
.code-form p { margin: 8px 0 0; min-height: 1.5em; }
.on-this-device { margin: 10px 0 0; }

/* MARK: Footer and toast */

.foot {
  max-width: 1080px;
  margin: 0 auto;
  padding: 16px 0 40px;
  border-top: 1px solid var(--hairline);
  color: var(--graphite);
  font-size: 14px;
}
.foot p { margin: 0; max-width: 70ch; }

.toast {
  position: fixed; left: 50%; bottom: calc(24px + env(safe-area-inset-bottom));
  transform: translate(-50%, 16px);
  max-width: min(92vw, 480px);
  background: var(--carbon); color: var(--vellum);
  padding: 11px 16px; border-radius: var(--radius-card);
  box-shadow: var(--shadow-float);
  font-size: 15px;
  opacity: 0; pointer-events: none;
  transition: opacity 250ms var(--ease), transform 250ms var(--ease);
}
.toast.shown { opacity: 1; transform: translate(-50%, 0); }
.toast:empty { display: none; }

@media (prefers-reduced-motion: reduce) {
  .qr.waiting { animation: none; }
  .toast, .toast.shown { transform: translate(-50%, 0); }
}

@media (max-width: 480px) {
  .top { padding-top: 22px; }
  .card { padding: 16px; }
  .wordmark { font-size: 28px; }
  .section-title { font-size: 24px; }
}

.unsupported .layout { display: none; }