/* ------------------------------------------------------------------ tokens */
:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --surface-2: #f3f2ee;
  --text: #0b0b0b;
  --text-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.1);
  --border-strong: rgba(11, 11, 11, 0.16);
  --accent: #2a78d6;
  --accent-ink: #ffffff;
  --error: #d03b3b;

  /* categorical series (fixed order) */
  --series-1: #2a78d6;
  --series-2: #eb6834;
  --series-3: #1baf7a;
  --series-4: #eda100;
  --series-5: #e87ba4;
  --series-6: #008300;
  --series-7: #6250d6;
  --series-8: #e34948;

  /* sequential blue ramp for heatmaps (low -> high) */
  --heat-empty: #f0efec;
  --heat-0: #cde2fb;
  --heat-1: #86b6ef;
  --heat-2: #3987e5;
  --heat-3: #1c5cab;
  --heat-4: #0d366b;

  --bubble-sent: #2a78d6;
  --bubble-sent-ink: #ffffff;
  --bubble-recv: #ecebe6;
  --bubble-recv-ink: #0b0b0b;

  --radius: 12px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --surface-2: #232321;
    --text: #f0efec;
    --text-2: #c3c2b7;
    --muted: #898781;
    --grid: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, 0.1);
    --border-strong: rgba(255, 255, 255, 0.18);
    --accent: #3987e5;
    --series-1: #3987e5;
    --series-2: #d95926;
    --series-3: #199e70;
    --series-4: #c98500;
    --series-5: #d55181;
    --series-6: #008300;
    --series-7: #9085e9;
    --series-8: #e66767;
    --heat-empty: #262624;
    --heat-0: #173052;
    --heat-1: #1c5cab;
    --heat-2: #3987e5;
    --heat-3: #86b6ef;
    --heat-4: #cde2fb;
    --bubble-sent: #2f6fbd;
    --bubble-recv: #2c2c2a;
    --bubble-recv-ink: #f0efec;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d;
  --surface: #1a1a19;
  --surface-2: #232321;
  --text: #f0efec;
  --text-2: #c3c2b7;
  --muted: #898781;
  --grid: #2c2c2a;
  --axis: #383835;
  --border: rgba(255, 255, 255, 0.1);
  --border-strong: rgba(255, 255, 255, 0.18);
  --accent: #3987e5;
  --series-1: #3987e5;
  --series-2: #d95926;
  --series-3: #199e70;
  --series-4: #c98500;
  --series-5: #d55181;
  --series-6: #008300;
  --series-7: #9085e9;
  --series-8: #e66767;
  --heat-empty: #262624;
  --heat-0: #173052;
  --heat-1: #1c5cab;
  --heat-2: #3987e5;
  --heat-3: #86b6ef;
  --heat-4: #cde2fb;
  --bubble-sent: #2f6fbd;
  --bubble-recv: #2c2c2a;
  --bubble-recv-ink: #f0efec;
}

/* ------------------------------------------------------------------ base */
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--page);
  color: var(--text);
  font: 14px/1.45 var(--font);
  -webkit-font-smoothing: antialiased;
}
code { font-size: 0.92em; background: var(--surface-2); padding: 1px 5px; border-radius: 4px; }
[hidden] { display: none !important; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font: inherit;
  font-weight: 500;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding: 9px 16px;
  cursor: pointer;
  white-space: nowrap;
}
.btn:hover { background: var(--surface-2); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--text-2); }
.btn.ghost:hover { background: var(--surface-2); }
.btn.small { padding: 6px 12px; font-size: 13px; }
.btn.icon { padding: 7px; text-decoration: none; }
.btn.ghost.icon:hover { color: var(--text); }

/* ------------------------------------------------------------------ top bar */
.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 650; font-size: 16px; color: var(--text); }
.brand svg { color: var(--accent); }
.tagline { color: var(--muted); font-size: 13px; }
.spacer { flex: 1; }

/* ------------------------------------------------------------------ landing */
#landing { padding: 8vh 16px; display: grid; place-items: center; }
.dropzone {
  max-width: 640px;
  text-align: center;
  padding: 48px 32px;
  background: var(--surface);
  border: 1.5px dashed var(--border-strong);
  border-radius: 20px;
}
.dropzone h1 { margin: 0 0 12px; font-size: 28px; letter-spacing: -0.01em; }
.dropzone p { color: var(--text-2); margin: 0 0 20px; }
.dropzone .actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 16px; }
.dropzone .hint { color: var(--muted); font-size: 13px; margin-bottom: 8px; }
.dropzone .privacy { color: var(--muted); font-size: 13px; margin: 0; }
.error { color: var(--error) !important; margin-top: 16px !important; }

.progress { width: min(560px, 100%); text-align: center; }
.progress .track { height: 8px; background: var(--grid); border-radius: 999px; overflow: hidden; }
.progress .track div { height: 100%; width: 0; background: var(--accent); border-radius: 999px; transition: width 0.2s; }
.progress p { color: var(--text-2); font-size: 13px; font-variant-numeric: tabular-nums; }

.drop-overlay {
  position: fixed;
  inset: 0;
  display: none;
  place-items: center;
  background: color-mix(in srgb, var(--page) 80%, transparent);
  backdrop-filter: blur(2px);
  z-index: 100;
  pointer-events: none;
}
.drop-overlay div { padding: 32px 48px; border: 2px dashed var(--accent); border-radius: 20px; background: var(--surface); font-size: 18px; font-weight: 600; }
body.dragging .drop-overlay { display: grid; }

/* ------------------------------------------------------------------ dashboard */
main { max-width: 1440px; margin: 0 auto; padding: 0 24px 64px; }

.filters {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 12px 16px;
  padding: 14px 0 12px;
  background: var(--page);
  border-bottom: 1px solid var(--border);
}
.field { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.field.grow { flex: 1 1 260px; max-width: 420px; }
.field.people { flex: 0 1 220px; }
.owner-fields { display: contents; }
.field > span { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }
select, input[type="date"], input[type="search"] {
  font: inherit;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding: 7px 10px;
  min-width: 0;
}
select { width: 100%; }
.dates { display: flex; align-items: center; gap: 6px; }
.dash-sep { color: var(--muted); }
.check { display: flex; align-items: center; gap: 6px; color: var(--text-2); padding-bottom: 8px; cursor: pointer; }

.seg { display: inline-flex; flex-wrap: wrap; background: var(--surface-2); border-radius: 8px; padding: 3px; gap: 2px; }
.seg button {
  font: inherit;
  font-size: 12.5px;
  color: var(--text-2);
  background: transparent;
  border: 0;
  border-radius: 6px;
  padding: 5px 10px;
  cursor: pointer;
}
.seg button:hover { color: var(--text); }
.seg button.on { background: var(--surface); color: var(--text); font-weight: 600; box-shadow: 0 0 0 1px var(--border); }

.scope { margin: 14px 0 0; color: var(--text-2); font-size: 13px; }
.scope .files { color: var(--muted); margin-left: 8px; }
.scope .files::before { content: "· "; }

.kpis {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 12px;
  margin: 16px 0;
}
.kpi {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  min-width: 0;
}
.kpi-label { font-size: 12px; color: var(--text-2); font-weight: 500; }
.kpi-value { font-size: 24px; font-weight: 650; letter-spacing: -0.01em; margin: 2px 0; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.kpi-value small { font-size: 15px; color: var(--muted); font-weight: 500; }
.kpi-sub { font-size: 12px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px 12px;
  min-width: 0;
}
.card.wide { grid-column: 1 / -1; }
.card header { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.card h2 { font-size: 15px; font-weight: 620; margin: 0; color: var(--text); }
.card .sub { font-size: 12.5px; color: var(--muted); margin: 2px 0 0; }
.chart { width: 100%; height: 300px; }
.chart.tall { height: 420px; }
.chart.cal { height: 210px; }

.section-title { font-size: 20px; margin: 40px 0 0; }
.dash-section > .grid { margin-top: 12px; }
#sec-activity > .section-title { margin-top: 24px; }

/* ------------------------------------------------------------------ leaderboard, lists, year in review */
.table-wrap { overflow-x: auto; margin: 0 -4px; }
table.leader { width: 100%; border-collapse: collapse; font-size: 13px; font-variant-numeric: tabular-nums; }
table.leader th, table.leader td { padding: 7px 8px; text-align: right; white-space: nowrap; border-bottom: 1px solid var(--border); }
table.leader th:first-child, table.leader td:first-child { text-align: left; white-space: normal; min-width: 160px; }
table.leader th { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.03em; color: var(--muted); cursor: pointer; user-select: none; position: sticky; top: 0; background: var(--surface); }
table.leader th:hover { color: var(--text); }
table.leader th.sorted { color: var(--text); }
table.leader th.sorted::after { content: " ↓"; }
table.leader th.sorted.asc::after { content: " ↑"; }
table.leader tbody tr { cursor: pointer; }
table.leader tbody tr:hover { background: var(--surface-2); }
table.leader td.emoji { font-size: 16px; text-align: center; }
table.leader .muted { color: var(--muted); }
#leaderMore { margin-top: 10px; }

.plain-list, .milestones { list-style: none; margin: 0; padding: 0; max-height: 320px; overflow-y: auto; }
.plain-list li { display: flex; justify-content: space-between; gap: 12px; padding: 8px 2px; border-bottom: 1px solid var(--border); cursor: pointer; font-size: 13.5px; }
.plain-list li:hover { background: var(--surface-2); }
.plain-list .meta, .milestones .meta { color: var(--muted); font-size: 12.5px; white-space: nowrap; }
.plain-list .empty, .milestones .empty { color: var(--muted); cursor: default; border: 0; }
.milestones { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 8px; max-height: 360px; }
.milestones li { padding: 10px 12px; border-radius: 10px; background: var(--surface-2); font-size: 13.5px; }
.milestones li b { display: block; font-size: 15px; margin-bottom: 2px; }

.wrap-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.wrapped { display: flex; justify-content: center; padding: 8px 0; }
.wrapped canvas { width: min(420px, 100%); height: auto; border-radius: 14px; box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15); }

/* ------------------------------------------------------------------ message browser */
.browser { margin-top: 16px; }
.browser input[type="search"] { width: min(320px, 100%); }
.messages {
  height: 520px;
  overflow-y: auto;
  padding: 8px 4px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.more { align-self: center; display: flex; margin: 0 auto 8px; }
.day-sep { text-align: center; font-size: 11.5px; color: var(--muted); margin: 14px 0 6px; font-weight: 500; }
.msg { display: flex; }
.msg.sent { justify-content: flex-end; }
.bubble {
  max-width: min(72%, 560px);
  padding: 7px 12px 5px;
  border-radius: 16px;
  background: var(--bubble-recv);
  color: var(--bubble-recv-ink);
  overflow-wrap: anywhere;
}
.msg.sent .bubble { background: var(--bubble-sent); color: var(--bubble-sent-ink); border-bottom-right-radius: 5px; }
.msg.recv .bubble { border-bottom-left-radius: 5px; }
.bubble .who { font-size: 11px; font-weight: 600; opacity: 0.75; margin-bottom: 2px; }
.bubble .body { white-space: pre-wrap; }
.bubble .att { font-size: 13px; opacity: 0.9; margin-top: 2px; }

/* Attachments: fixed-size boxes so loading media doesn't shift the scrolled list */
.media-list { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 2px; }
.media { font-size: 13px; border-radius: 10px; overflow: hidden; max-width: 100%; }
.media-ph, .media-gf, .media-vd { width: 240px; height: 180px; background: rgba(127, 127, 127, 0.15); display: flex; align-items: center; justify-content: center; text-align: center; padding: 0; }
.media.loading { color: inherit; opacity: 0.7; padding: 8px; overflow-wrap: anywhere; }
.media img, .media video { width: 100%; height: 100%; object-fit: cover; display: block; background: #000; }
.media img { cursor: zoom-in; }
.media-au { width: 260px; }
.media-au audio { width: 100%; display: block; }
.media.missing, .media.file { width: auto; height: auto; padding: 6px 10px; background: rgba(127, 127, 127, 0.15); opacity: 0.85; }
.media.file a { color: inherit; }
.lightbox { border: 0; padding: 0; background: transparent; max-width: 94vw; max-height: 94vh; cursor: zoom-out; }
.lightbox::backdrop { background: rgba(0, 0, 0, 0.82); }
.lightbox img { display: block; max-width: 94vw; max-height: 88vh; object-fit: contain; border-radius: 8px; }
.lightbox .caption { color: #fff; font-size: 13px; text-align: center; padding: 8px; opacity: 0.8; }
.bubble .time { font-size: 10.5px; opacity: 0.65; text-align: right; margin-top: 2px; }

/* ------------------------------------------------------------------ responsive */
@media (max-width: 900px) {
  .grid { grid-template-columns: minmax(0, 1fr); }
  main { padding: 0 16px 48px; }
  .topbar { padding: 12px 16px; }
  .tagline { display: none; }
  .chart.tall { height: 380px; }
}
@media (max-width: 560px) {
  .filters { position: static; }
  .field.grow, .field.people { max-width: none; flex-basis: 100%; }
  .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .kpi-value { font-size: 20px; }
  .dropzone { padding: 32px 18px; }
  .bubble { max-width: 85%; }
}