/* Drook Studio: Messages (messages.js) and Past versions (history.js).
   Messages: list + reading pane side by side when the screen area is 45.2632rem or wider (.msgs.is-split,
   set from the real width), otherwise the open message slides over the list. Hot leads carry a soft
   light. New / All / Spam is a .seg with a light that slides to the chosen one.
   Past versions: a vertical line of light, newest on top, the live version lit.
   Nothing moves on hover: only light changes. Motion is off under reduced motion and ?still. */

/* ================================================================ messages */

.msgs-csv { font-size: var(--fs-small); }
.msgs-bar { display: flex; align-items: center; justify-content: space-between; gap: 0.6316rem; flex-wrap: wrap; margin: 0 0 1.0526rem; }
.msgs-note { margin-bottom: 1.0526rem; }

/* segmented control with a sliding light */
.msgs-seg { position: relative; isolation: isolate; }
.msgs-seg .seg-btn { position: relative; z-index: 1; min-width: 5.0526rem; justify-content: center; font-size: 1rem; }
.msgs-seg .seg-btn[aria-pressed="true"] { background: transparent; box-shadow: none; color: var(--ink); font-weight: 700; }
.msgs-seg .seg-btn:focus-visible { outline: 0.1053rem solid var(--ink); outline-offset: 0.1579rem; }
.msgs-seg-light {
  position: absolute; z-index: 0; top: 0.2632rem; bottom: 0.2632rem; left: 0;
  width: var(--w, 0px); transform: translateX(var(--x, 0px));
  /* the same pressed glass as every other .seg (app.css), so the control reads the same on every screen */
  border-radius: var(--r-pill); background: var(--s4);
  box-shadow: inset 0 0 0 1px var(--ring2), inset 0 1px 0 var(--hi), 0 0 1.0526rem -0.3158rem var(--glow);
  pointer-events: none;
}
.msgs-seg.is-set .msgs-seg-light { transition: transform 420ms var(--ease), width 420ms var(--ease); }
.msgs-seg-n {
  display: inline-grid; place-items: center; min-width: 1.4737rem; height: 1.4737rem; padding: 0 0.4211rem;
  border-radius: var(--r-pill); font-size: .86rem; font-weight: 700;
  background: var(--s3); color: var(--ink); box-shadow: inset 0 0 0 1px var(--ring2);
}
.msgs-seg .seg-btn[aria-pressed="true"] .msgs-seg-n { background: var(--s2); color: var(--ink); box-shadow: inset 0 0 0 1px var(--ring3); }

/* layout: one column (narrow) */
.msgs-split { display: grid; gap: 1.0526rem; align-items: start; }
.msgs-listpane { padding: 0.5263rem; margin: 0; }
.msgs-split.is-empty .msgs-listpane { padding: 0; background: transparent; box-shadow: none; }
.msgs-split.is-empty .msgs-listpane::before { display: none; }

/* layout: two panes */
.msgs.is-split .msgs-split { grid-template-columns: minmax(17.3684rem, 5fr) minmax(0, 7fr); gap: 1.2632rem; }
.msgs.is-split .msgs-split.is-empty { grid-template-columns: minmax(0, 1fr); }
.msgs.is-split .msgs-reader { position: sticky; top: calc(var(--top) + 0.8421rem); max-height: calc(100dvh - var(--top) - 2.1053rem); overflow: auto; overscroll-behavior: contain; }
.msgs.is-split .msgs-back, .msgs.is-split .msgs-r-top { display: none; }

/* rows */
.msgs-rows { gap: 0.1053rem; }
.msgs-li { display: grid; grid-template-rows: 1fr; transition: grid-template-rows 480ms var(--ease), opacity 360ms var(--ease), filter 360ms var(--ease); }
.msgs-li > .msgs-row { min-height: 0; overflow: hidden; }
.msgs-li.is-leaving { grid-template-rows: 0fr; opacity: 0; filter: blur(0.3158rem); pointer-events: none; }
.msgs-li + .msgs-li .msgs-row { box-shadow: 0 -1px 0 var(--ring); }
.msgs-row {
  width: 100%; border: 0; background: transparent; color: inherit; cursor: pointer; text-align: left;
  align-items: flex-start; padding: 0.9474rem 0.8421rem; gap: 0.8421rem; font: inherit; position: relative;
}
.msgs-li + .msgs-li .msgs-row:hover, .msgs-row:hover { background: var(--hi); box-shadow: inset 0 0 0 1px var(--ring); }
.msgs-row:focus-visible { outline: 0.1053rem solid var(--ink); outline-offset: -0.1053rem; }
.msgs-row[aria-current="true"], .msgs-li + .msgs-li .msgs-row[aria-current="true"] {
  background: var(--s4); box-shadow: inset 0 0 0 1px var(--ring2), inset 0 1px 0 var(--hi), 0 0 1.5789rem -0.5263rem var(--glow);
}
.msgs-initials { width: 2.7368rem; height: 2.7368rem; font-weight: 700; font-size: .95rem; letter-spacing: .02em; color: var(--ink); }
.msgs-row-main { display: grid; gap: 0.2105rem; }
.msgs-row-top { display: flex; align-items: center; gap: 0.5263rem; min-width: 0; }
.msgs-row-name { font-size: 1.08rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.msgs-row-gist { color: var(--ink2); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; overflow-wrap: anywhere; }
.msgs-row-meta { font-size: var(--fs-small); }
.msgs-row.is-read .msgs-row-name { font-weight: 500; }
.msgs-hot { min-height: 1.3684rem; padding: 0 0.5263rem; font-size: .8rem; flex: none; }

/* hot: a soft light, never movement */
.msgs-row.is-hot .msgs-initials { background: var(--accent); color: var(--accent-ink); box-shadow: 0 0 0 0.2105rem var(--hi), 0 0 1.3684rem -0.1053rem var(--glow); }
/* no left filament for hot rows: that is the "this one is open" marker, as in the rail. The lit
   initials and the Hot badge say hot. */

.msgs-spamnote { display: flex; gap: 0.5263rem; align-items: flex-start; color: var(--ink2); margin: 0.4211rem 0.5263rem 0.6316rem; font-size: var(--fs-small); }
.msgs-spamnote .icon { flex: none; margin-top: 0.1053rem; }

/* switching tabs: the list fades in, no slide */
@media (prefers-reduced-motion: no-preference) {
  html:not(.still) .msgs-rows.is-swap { animation: msgs-fade 420ms var(--ease) both; }
  html:not(.still) .msgs-reader.is-swap .msgs-r-inner > * { animation: msgs-fade 460ms var(--ease) both; }
  html:not(.still) .msgs-reader.is-swap .msgs-r-inner > *:nth-child(3) { animation-delay: 40ms; }
  html:not(.still) .msgs-reader.is-swap .msgs-r-inner > *:nth-child(n+4) { animation-delay: 80ms; }
}
@keyframes msgs-fade { from { opacity: 0; filter: blur(0.3158rem); } }

/* reader */
.msgs-reader { padding: 1.8947rem; margin: 0; outline: none; }
.msgs-r-inner { display: grid; gap: 1.3684rem; align-content: start; }
.msgs-r-inner > * { margin: 0; }
.msgs-reader.is-hot { background: radial-gradient(90% 60% at 18% -8%, rgba(255,255,255,.10), transparent 60%), var(--glass), var(--s1); }
:root[data-theme="light"] .msgs-reader.is-hot { background: radial-gradient(90% 60% at 18% -8%, rgba(0,0,0,.05), transparent 60%), var(--glass), var(--s1); }
.msgs-pick { padding: 2.1053rem 0; text-align: center; }
.msgs-r-head { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 0.3158rem 0.9474rem; align-items: center; }
.msgs-r-initials { width: 3.3684rem; height: 3.3684rem; font-size: 1.15rem; font-weight: 700; grid-row: span 2; }
.msgs-reader.is-hot .msgs-r-initials { background: var(--accent); color: var(--accent-ink); box-shadow: 0 0 0 0.2632rem var(--hi), 0 0 1.7895rem -0.1053rem var(--glow); }
.msgs-r-who { min-width: 0; }
.msgs-r-name { font-size: var(--fs-2); letter-spacing: -0.02em; line-height: 1.15; margin: 0; overflow-wrap: anywhere; outline: none; }
.msgs-r-when { display: flex; align-items: flex-start; gap: 0.4211rem; color: var(--ink2); margin: 0.3158rem 0 0; font-size: var(--fs-small); }
.msgs-r-when .icon { flex: none; width: 1.0526rem; height: 1.0526rem; margin-top: 0.1053rem; }
.msgs-r-badges { grid-column: 2; display: flex; flex-wrap: wrap; gap: 0.4211rem; }
.msgs-status { background: transparent; }
.msgs-status.is-fresh { animation: msgs-glow 1.4s var(--ease) both; }
.msgs-status .icon { width: 0.9474rem; height: 0.9474rem; }
@keyframes msgs-glow { from { box-shadow: inset 0 0 0 1px var(--ring3), 0 0 0 0.3158rem var(--glow), 0 0 1.5789rem var(--glow); } }

.msgs-short .eyebrow, .msgs-said .eyebrow, .msgs-draft .eyebrow { margin: 0 0 0.5263rem; }
.msgs-short-text { font-size: clamp(1.3rem, 1.1rem + .6vw, 1.6rem); line-height: 1.35; letter-spacing: -0.015em; font-weight: 500; text-wrap: pretty; margin: 0; }
.msgs-quote {
  margin: 0; padding: 0.9474rem 1.1579rem; border-radius: var(--r-lg); background: var(--s2);
  box-shadow: inset 0.1053rem 0 0 var(--ring3), inset 0 0 0 1px var(--ring);
  white-space: pre-wrap; overflow-wrap: anywhere; color: var(--ink);
}
.msgs-fields { display: grid; grid-template-columns: max-content 1fr; gap: 0.3158rem 0.8421rem; }
.msgs-fields dt { color: var(--ink2); }
.msgs-fields dd { margin: 0; overflow-wrap: anywhere; }
.msgs-contact, .msgs-actions, .msgs-draft-actions { display: flex; flex-wrap: wrap; gap: 0.5263rem; }
.msgs-contact .btn { overflow-wrap: anywhere; text-align: left; }
.msgs-actions { padding-top: 1.1579rem; box-shadow: 0 -1px 0 var(--ring); }
.msgs-draft-slot:empty { display: none; }

/* the reply: types itself in */
.msgs-draft { display: grid; gap: 0.7368rem; padding: 1.2632rem; border-radius: var(--r-lg); background: var(--s0); box-shadow: inset 0 0 0 1px var(--ring2), 0 0 2.1053rem -0.9474rem var(--glow); }
.msgs-draft-head .eyebrow { margin: 0; }
.msgs-draft-sub { margin: 0.2105rem 0 0; font-size: var(--fs-small); }
.msgs-reply { min-height: 12.6316rem; font-size: 1.05rem; }
.msgs-draft.is-typing .msgs-reply { border-color: var(--ring3); box-shadow: 0 0 0 0.2105rem var(--hi), 0 0 1.8947rem -0.3158rem var(--glow); }
@media (prefers-reduced-motion: no-preference) {
  html:not(.still) .msgs-draft.is-typing .msgs-reply { animation: msgs-typing 1.8s ease-in-out infinite alternate; }
  html:not(.still) .msgs-draft { animation: msgs-fade 420ms var(--ease) both; }
}
@keyframes msgs-typing { to { box-shadow: 0 0 0 0.2105rem var(--hi), 0 0 2.4211rem -0.1053rem var(--glow); } }

/* calm empty */
.msgs-calm { text-align: center; padding: 3.3684rem 1.4737rem 3.1579rem; border-radius: var(--r-xl); background: radial-gradient(60% 70% at 50% 0%, rgba(255,255,255,.06), transparent 70%), var(--glass), var(--s1); box-shadow: var(--edge), var(--e1); }
:root[data-theme="light"] .msgs-calm { background: var(--glass), var(--s1); }
.msgs-calm-orb {
  width: 4.4211rem; height: 4.4211rem; margin: 0 auto 1.2632rem; border-radius: 50%; display: grid; place-items: center;
  background: var(--s3); color: var(--ink); box-shadow: inset 0 0 0 1px var(--ring2), 0 0 0 0.5263rem var(--hi), 0 0 3.1579rem -0.3158rem var(--glow);
}
.msgs-calm-orb .icon { width: 1.6842rem; height: 1.6842rem; }
@media (prefers-reduced-motion: no-preference) {
  html:not(.still) .msgs-calm-orb { animation: msgs-breathe 4.8s ease-in-out infinite alternate; }
}
@keyframes msgs-breathe { to { box-shadow: inset 0 0 0 1px var(--ring2), 0 0 0 0.8421rem transparent, 0 0 4.2105rem 0 var(--glow); } }
.msgs-calm-title { font-size: var(--fs-2); letter-spacing: -0.02em; margin: 0; }
.msgs-calm-body { color: var(--ink2); margin: 0.5263rem auto 0; max-width: 44ch; }
.msgs-calm .btn { margin-top: 1.3684rem; }

/* narrow: the open message slides over the list (transform only as a transition, never on hover) */
.msgs:not(.is-split) .msgs-reader {
  position: fixed; inset: 0; z-index: 60; border-radius: 0; max-height: none;
  overflow-y: auto; overscroll-behavior: contain;
  padding: calc(0.6316rem + env(safe-area-inset-top)) var(--gutter, 0.8421rem) calc(2.5263rem + env(safe-area-inset-bottom));
  background: var(--bg); box-shadow: none;
  transform: translateX(104%); visibility: hidden;
  transition: transform 520ms var(--ease), visibility 0s linear 520ms;
}
.msgs:not(.is-split) .msgs-reader::before, .msgs:not(.is-split) .msgs-reader::after { display: none; }
.msgs:not(.is-split) .msgs-reader.is-hot { background: radial-gradient(120% 40% at 20% 0%, rgba(255,255,255,.08), transparent 60%), var(--bg); }
.msgs.is-reading:not(.is-split) .msgs-reader { transform: none; visibility: visible; transition: transform 520ms var(--ease), visibility 0s; }
.msgs-r-top { position: sticky; top: calc(-0.6316rem - env(safe-area-inset-top)); z-index: 2; margin: -0.6316rem calc(-1 * var(--gutter, 0.8421rem)) 0; padding: 0.6316rem var(--gutter, 0.8421rem) 0.4211rem; background: var(--bg); box-shadow: 0 1px 0 var(--ring); }
.msgs-back { padding: 0 0.8421rem 0 0.5263rem; color: var(--ink); font-weight: 700; }
.msgs-back .icon { transform: scaleX(-1); }
html.msgs-lock body { overflow: hidden; }
@media (prefers-reduced-motion: reduce) {
  .msgs-seg.is-set .msgs-seg-light, .msgs-li, .msgs:not(.is-split) .msgs-reader, .msgs.is-reading:not(.is-split) .msgs-reader { transition: none; }
}
html.still .msgs-seg.is-set .msgs-seg-light, html.still .msgs-li, html.still .msgs:not(.is-split) .msgs-reader { transition: none; }

@media (max-width: 760px) {
  .msgs-bar, .msgs-seg { width: 100%; }
  .msgs-seg .seg-btn { flex: 1; min-width: 0; padding: 0 0.5263rem; }
  .msgs-csv { width: 100%; justify-content: center; }
  .msgs-listpane { padding: 0.3158rem; }
  .msgs-row { padding: 0.8421rem 0.6316rem; gap: 0.7368rem; }
  .msgs-initials { width: 2.5263rem; height: 2.5263rem; }
  .msgs-r-head { grid-template-columns: auto minmax(0, 1fr); gap: 0.2105rem 0.7368rem; }
  .msgs-r-initials { width: 2.9474rem; height: 2.9474rem; }
  .msgs-r-badges { grid-column: 1 / -1; margin-top: 0.4211rem; }
  .msgs-r-inner { gap: 1.1579rem; }
  .msgs-contact .btn, .msgs-actions .btn, .msgs-draft-actions .btn { flex: 1 1 100%; justify-content: center; }
  .msgs-draft { padding: 0.9474rem 0.8421rem; }
  .msgs-calm { padding: 2.5263rem 1.0526rem; }
}

/* ================================================================ past versions */

.hist-split { display: grid; grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); gap: 1.4737rem; align-items: start; }
.hist-line { list-style: none; margin: 0; padding: 0 0 0 2.3158rem; position: relative; display: grid; gap: 0.4211rem; }
/* the thin line of light: bright at the live version, fading down into the past */
.hist-line::before {
  content: ''; position: absolute; left: 0.7895rem; top: 1.7895rem; bottom: 1.2632rem; width: 0.1053rem; border-radius: 0.1053rem;
  background: linear-gradient(to bottom, var(--light-a), var(--ring2) 28%, var(--ring) 85%, transparent);
}
.hist-line.is-empty { padding: 0; }
.hist-line.is-empty::before, .hist-wait + .hist-wait::before { display: none; }
.hist-wait { list-style: none; }
.hist-line:has(> .hist-wait)::before { display: none; }
.hist-line:has(> .hist-wait) { padding-left: 0; }

.hist-item { position: relative; }
.hist-node {
  position: absolute; left: -1.8947rem; top: 1.5789rem; width: 0.8421rem; height: 0.8421rem; border-radius: 50%;
  background: var(--bg); box-shadow: inset 0 0 0 0.1053rem var(--ring3);
}
.hist-item.is-live .hist-node {
  left: -2.0526rem; top: 2rem; width: 1.1579rem; height: 1.1579rem;
  background: var(--light); box-shadow: 0 0 0 0.3158rem var(--hi), 0 0 1.2632rem 0.1053rem var(--light-a);
}
.hist-item.is-live .hist-node::after {
  content: ''; position: absolute; inset: -0.4737rem; border-radius: 50%; box-shadow: 0 0 0 1px var(--ring3);
}
@media (prefers-reduced-motion: no-preference) {
  html:not(.still) .hist-item.is-live .hist-node::after { animation: hist-breathe 3.6s ease-in-out infinite alternate; }
  html:not(.still) .hist-item.is-fresh .hist-body { animation: hist-lit 1.8s var(--ease) both; }
}
@keyframes hist-breathe { from { opacity: .25; } to { opacity: 1; box-shadow: 0 0 0 1px var(--ring3), 0 0 1.1579rem var(--glow); } }
@keyframes hist-lit { from { box-shadow: var(--edge), 0 0 0 0.4211rem var(--glow), 0 0 4.2105rem var(--glow); } }

.hist-body { display: grid; gap: 0.3158rem; padding: 1.1579rem 1.3684rem; border-radius: var(--r-lg); transition: background var(--t) var(--ease), box-shadow var(--t) var(--ease); }
.hist-body > * { margin: 0; }
.hist-item:not(.is-live) .hist-body:hover { background: var(--hi); box-shadow: inset 0 0 0 1px var(--ring); }
.hist-item:not(.is-live):hover .hist-node { box-shadow: inset 0 0 0 0.1053rem var(--ink), 0 0 0.8421rem var(--glow); }
.hist-item.is-live .hist-body { padding: 1.5789rem 1.6842rem; margin-bottom: 0.6316rem; gap: 0.4211rem; }
.hist-live { margin-bottom: 0.4211rem !important; }
.hist-when { color: var(--ink3); font-size: var(--fs-small); font-weight: 500; }
.hist-what { font-size: var(--fs-3); font-weight: 500; letter-spacing: -0.01em; line-height: 1.4; text-wrap: pretty; outline: none; }
.hist-item.is-live .hist-what { font-size: clamp(1.4rem, 1.15rem + .7vw, 1.75rem); font-weight: 700; letter-spacing: -0.02em; line-height: 1.25; }
.hist-item.is-live .hist-when { color: var(--ink2); }
.hist-go { justify-self: start; margin-top: 0.5263rem; }
.hist-more { margin: 0.6316rem 0 0 2.3158rem; }
.hist-more:empty { display: none; }

.hist-aside { position: sticky; top: calc(var(--top) + 0.8421rem); display: grid; gap: 0.7368rem; padding: 1.3684rem; }
.hist-aside-title { font-size: var(--fs-3); margin: 0; }
.hist-aside-list { list-style: none; margin: 0 0 0.3158rem; padding: 0; display: grid; gap: 0.6316rem; color: var(--ink2); }
.hist-aside-list li { position: relative; padding-left: 1.0526rem; }
.hist-aside-list li::before { content: ''; position: absolute; left: 0.1053rem; top: .7em; width: 0.3158rem; height: 0.3158rem; border-radius: 50%; background: var(--ink3); }

/* go back: what is on now, next to what it goes back to */
.hist-confirm { display: grid; gap: 1.1579rem; }
.hist-ba { display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); gap: 0.7368rem; align-items: stretch; }
.hist-ba-side { display: grid; gap: 0.3158rem; align-content: start; padding: 1.0526rem 1.1579rem; border-radius: var(--r-lg); background: var(--s2); box-shadow: inset 0 0 0 1px var(--ring); }
.hist-ba-side > * { margin: 0; }
.hist-ba-side.is-target { background: var(--s3); box-shadow: inset 0 0 0 1px var(--ring3), 0 0 1.8947rem -0.5263rem var(--glow); }
.hist-ba-what { font-weight: 700; line-height: 1.35; overflow-wrap: anywhere; }
.hist-ba-when { color: var(--ink2); font-size: var(--fs-small); }
.hist-ba-arrow { align-self: center; color: var(--ink3); }
.hist-confirm .btn-row { margin-top: 0; }
.hist-done { text-align: center; padding: 0.6316rem 0 0.2105rem; }
.hist-done-ring { width: 4.4211rem; height: 4.4211rem; margin: 0 auto 1.0526rem; background: var(--accent); color: var(--accent-ink); box-shadow: 0 0 0 0.4211rem var(--hi), 0 0 2.6316rem -0.2105rem var(--glow); }
.hist-done-ring .icon { width: 2rem; height: 2rem; stroke-width: 2.2; }
.hist-done-title { font-size: var(--fs-2); letter-spacing: -0.02em; margin: 0; }
.hist-done-body { color: var(--ink2); margin: 0.5263rem auto 0; max-width: 46ch; }
.hist-confirm .hist-done .btn-row { justify-content: center; margin-top: 1.3684rem; }

@media (max-width: 1000px) {
  .hist-split { grid-template-columns: minmax(0, 1fr); }
  .hist-aside { position: static; }
}
@media (max-width: 760px) {
  .hist-line { padding-left: 1.6842rem; }
  .hist-line::before { left: 0.4737rem; }
  .hist-node { left: -1.5789rem; top: 1.3684rem; }
  .hist-item.is-live .hist-node { left: -1.7368rem; top: 1.5789rem; }
  .hist-body { padding: 0.9474rem 0.8421rem; }
  .hist-item.is-live .hist-body { padding: 1.2632rem 1.0526rem; }
  .hist-go { width: 100%; justify-content: center; }
  .hist-more { margin-left: 1.6842rem; }
  .hist-ba { grid-template-columns: minmax(0, 1fr); }
  .hist-ba-arrow { justify-self: center; transform: rotate(90deg); }
}