:root {
  --bg: #f5f5f4;
  --panel: #ffffff;
  --raise: #ebebe9;
  --line: #dcdcda;
  --ink: #1c1e21;
  --muted: #6b7280;
  --signal: #f2c14e;
  --signal-ink: #2a2308;
  --alert: #c8503f;
  --well: #e3e3e1;
  --link: #b0680d;
  color-scheme: light;
}

[data-theme="dark"] {
  --bg: #25282b;
  --panel: #2f3337;
  --raise: #383d42;
  --line: #454b51;
  --ink: #edeff1;
  --muted: #99a1a8;
  --alert: #e0705f;
  --well: #1b1e20;
  --link: var(--signal);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }

body {
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}

button, input { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 2px; }
.gone { display: none !important; }

/* ------------------------------------------------------------------ keypad */
.gate {
  min-height: 100dvh;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 20px;
  padding: 24px;
}

.typed {
  min-height: 26px;
  font-size: 24px;
  font-weight: 600;
  letter-spacing: .3em;
  font-variant-numeric: tabular-nums;
}

.keypad { display: grid; grid-template-columns: repeat(3, 78px); gap: 14px; }

.keypad button {
  height: 78px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--panel);
  font-size: 27px;
  font-variant-numeric: tabular-nums;
  -webkit-tap-highlight-color: transparent;
  display: grid;
  place-items: center;
}

.keypad button:active { background: var(--raise); }
.keypad button svg { width: 22px; height: 22px; }
.keypad button.admin { color: var(--muted); }

.error { color: var(--alert); font-size: 14px; min-height: 20px; margin: 0; text-align: center; }

.links { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; max-width: 320px; margin-top: 16px; }
.links .btn { min-width: 110px; justify-content: center; }

.shake { animation: shake 320ms; }
@keyframes shake { 25% { transform: translateX(-7px); } 50% { transform: translateX(7px); } 75% { transform: translateX(-4px); } }

/* ------------------------------------------------------------------- shell */
.bar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 18px;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.bar .who { font-weight: 600; margin-right: auto; }

.btn {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 14px;
  padding: 8px 14px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  white-space: nowrap;
  text-decoration: none;
}

.btn:hover { background: var(--raise); }
.btn.primary { background: var(--signal); border-color: var(--signal); color: var(--signal-ink); font-weight: 600; }
.btn.primary:hover { filter: brightness(1.06); }
.btn.quiet { background: transparent; border-color: transparent; color: var(--muted); }
.btn.quiet:hover { color: var(--ink); background: var(--panel); }
.btn[disabled] { opacity: .45; pointer-events: none; }
.btn svg { width: 15px; height: 15px; flex: none; }
.btn.small { padding: 5px 9px; font-size: 13px; }

.send {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
}

.send .status { color: var(--muted); font-size: 14px; font-variant-numeric: tabular-nums; }

.track { flex: 1 1 140px; height: 6px; border-radius: 3px; background: var(--panel); overflow: hidden; }
.track b { display: block; height: 100%; width: 0; background: var(--signal); transition: width 150ms; }

/* ------------------------------------------------------------------ notes */
.notesPanel { padding: 18px 18px 60px; max-width: 960px; }

.noteEditor { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }

.noteEditor textarea {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
  min-height: 135px;
  resize: vertical;
}

.note .body { font-size: 14px; line-height: 1.5; white-space: pre-wrap; word-break: break-word; }
.note .body a { color: var(--link); text-decoration: underline; }

.note .meta { display: flex; align-items: center; gap: 2px; margin-top: 10px; }
.note .meta span { font-size: 12px; color: var(--muted); margin-right: auto; }

/* -------------------------------------------------------------- day rows */
.days { padding: 0 18px 60px; }
.loading, .empty { color: var(--muted); font-size: 14px; padding: 40px 0; }

.day { padding: 20px 0; border-bottom: 1px solid var(--line); }

.day > header { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.day h2 { font-size: 16px; font-weight: 600; margin: 0; }
.day .meta { font-size: 13px; color: var(--muted); font-variant-numeric: tabular-nums; }
.day .acts { margin-left: auto; display: flex; gap: 6px; }

/* Every upload session in a day sits side by side, split by a vertical rule. */
.sessions { display: flex; flex-wrap: wrap; row-gap: 18px; }

.session {
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 10px;
  padding: 0 16px;
  border-left: 1px solid var(--line);
}

.session:first-child { border-left: none; padding-left: 0; }

.session .cap {
  flex: 0 0 100%;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  margin-bottom: -2px;
}

.session .cap .name { cursor: text; }
.session .cap .icon { margin-left: 2px; }

.tile { width: 112px; }

.tile .pic {
  display: block;
  width: 112px;
  height: 112px;
  border-radius: 8px;
  overflow: hidden;
  background: var(--well);
  display: grid;
  place-items: center;
  text-decoration: none;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
}

.tile .pic img { width: 100%; height: 100%; object-fit: cover; display: block; }
.tile .foot { display: flex; align-items: center; gap: 2px; margin-top: 3px; }

.tile .nm {
  flex: 1;
  min-width: 0;
  font-size: 11px;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.icon {
  border: none;
  background: transparent;
  color: var(--muted);
  padding: 4px;
  border-radius: 6px;
  display: grid;
  place-items: center;
}

.icon:hover { background: var(--raise); color: var(--ink); }
.icon.danger:hover { color: var(--alert); }
.icon svg { width: 15px; height: 15px; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  background: var(--raise);
  border: 1px solid var(--line);
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 14px;
  z-index: 20;
}

/* ------------------------------------------------------------------ admin */
.page { max-width: 760px; margin: 0 auto; padding: 22px 18px 60px; }
.page h1 { font-size: 19px; font-weight: 600; }
.page h2 { font-size: 15px; font-weight: 600; margin: 30px 0 10px; }

.collapsible { margin: 30px 0 10px; }
.collapsible summary {
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  padding: 4px 0;
}
.collapsible[open] summary { margin-bottom: 10px; }
.narrow { max-width: 360px; margin: 8vh auto; }

.field { display: grid; gap: 6px; margin-bottom: 12px; }
.field label { font-size: 13px; color: var(--muted); }

input[type=text], input[type=email], input[type=password] {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  width: 100%;
}

.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }

.card {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 10px;
  padding: 14px;
  margin-bottom: 10px;
}

.card .top { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.card .top strong { font-size: 16px; }
.card .top .meta { color: var(--muted); font-size: 13px; margin-left: auto; font-variant-numeric: tabular-nums; }
.card .seen { color: var(--muted); font-size: 12.5px; margin: 6px 0 0; }

.pin {
  font-size: 30px;
  letter-spacing: .3em;
  font-variant-numeric: tabular-nums;
  color: var(--signal);
  margin: 6px 0 12px;
}

.notice { font-size: 13px; color: var(--muted); }
.notice.warn { color: var(--alert); }

@media (max-width: 760px) {
  .days { padding: 0 12px 40px; }
  .session { padding: 0 11px; }
  .tile, .tile .pic { width: 96px; }
  .tile .pic { height: 96px; }
  .day .acts { margin-left: 0; width: 100%; }
  .send {
    position: sticky;
    bottom: 0;
    z-index: 6;
    order: 2;
    background: color-mix(in srgb, var(--bg) 94%, transparent);
    backdrop-filter: blur(8px);
    border-top: 1px solid var(--line);
    border-bottom: none;
    padding: 12px 14px calc(12px + env(safe-area-inset-bottom));
  }
  .send .btn { flex: 1 1 auto; justify-content: center; padding: 14px; }
  main { display: flex; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }