:root {
  color-scheme: dark;
  --canvas: #191b18;
  --shell: #292c27;
  --shell-raised: #32362f;
  --shell-deep: #20231f;
  --paper: #eee8da;
  --paper-bright: #f8f4eb;
  --paper-line: #d1c8b7;
  --ink: #252c29;
  --ink-inverse: #f2eee4;
  --muted: #747b75;
  --muted-inverse: #aeb3aa;
  --line: #50564d;
  --sage: #a5bdb1;
  --sage-deep: #58766c;
  --clay: #d18460;
  --clay-deep: #a9583c;
  --focus: #f0c66a;
  --shadow: 0 28px 75px rgb(0 0 0 / 0.42), 0 4px 14px rgb(0 0 0 / 0.22);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  padding: clamp(16px, 3vw, 42px);
  color: var(--ink-inverse);
  background:
    radial-gradient(circle at 18% 4%, rgb(103 120 105 / 0.18), transparent 31rem),
    radial-gradient(circle at 87% 88%, rgb(132 89 62 / 0.13), transparent 34rem),
    var(--canvas);
}

button, input, select, textarea { font: inherit; }
button, select, input[type='range'], input[type='color'], input[type='checkbox'] { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: 0.48; }

button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.ambient-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.18;
  background-image:
    repeating-linear-gradient(93deg, rgb(255 255 255 / 0.025) 0 1px, transparent 1px 9px),
    repeating-linear-gradient(7deg, transparent 0 33px, rgb(0 0 0 / 0.08) 34px 35px);
  mask-image: radial-gradient(ellipse at center, black, transparent 78%);
}

.app-shell {
  position: relative;
  width: min(1480px, 100%);
  margin: 0 auto;
  overflow: hidden;
  background: var(--shell);
  border: 1px solid #555c52;
  border-radius: 18px;
  box-shadow: var(--shadow), inset 0 1px rgb(255 255 255 / 0.05);
}

.app-shell::before {
  content: '';
  position: absolute;
  z-index: 5;
  top: 0;
  left: 76px;
  width: 86px;
  height: 2px;
  background: var(--clay);
}

.titlebar {
  min-height: 92px;
  display: grid;
  grid-template-columns: minmax(250px, 1fr) auto minmax(320px, 1fr);
  align-items: center;
  gap: 22px;
  padding: 16px 24px;
  background: #2d302b;
  border-bottom: 1px solid var(--line);
}

.brand-block, .brand-block > div:last-child, .header-actions, .header-status, .pane-header > div,
.preview-tools, .control-label, .system-strip, .tab, .live-badge, .profile-input-row,
.source-actions, .page-control { display: flex; align-items: center; }

.brand-block { gap: 14px; }
.brand-block > div:last-child { align-items: flex-start; flex-direction: column; }
.brand-mark { flex: 0 0 auto; width: 50px; height: 50px; }
.brand-mark img { display: block; width: 100%; height: 100%; }

.eyebrow {
  margin: 0 0 3px;
  color: var(--muted-inverse);
  font-size: 10px;
  font-weight: 650;
  letter-spacing: 0.06em;
}

h1 {
  margin: 0;
  font: 700 25px/1.05 "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  letter-spacing: -0.035em;
}
h1 span { color: var(--sage); font-weight: 500; }

.header-status {
  justify-content: center;
  gap: 9px;
  min-width: 205px;
  color: #bcc1b8;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.status-lamp { width: 7px; height: 7px; border-radius: 50%; background: var(--sage); box-shadow: 0 0 0 4px rgb(165 189 177 / 0.1); }
.header-divider { width: 1px; height: 16px; background: #555b52; }
.header-actions { justify-content: flex-end; gap: 8px; }
.header-actions .button { white-space: nowrap; }

.button, .text-button, .icon-button, .page-button {
  border: 0;
  color: inherit;
  background: transparent;
}

.button {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 0 14px;
  border-radius: 9px;
  font-size: 11px;
  font-weight: 720;
  letter-spacing: 0.01em;
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease, box-shadow 120ms ease;
}
.button:hover:not(:disabled) { transform: translateY(-1px); }
.button-primary { color: #241914; background: var(--clay); box-shadow: 0 4px 12px rgb(70 32 20 / 0.2), inset 0 -1px rgb(91 38 23 / 0.28); }
.button-primary:hover:not(:disabled) { background: #df9570; }
.button-ghost { color: #e4e0d7; border: 1px solid #5a6057; background: rgb(255 255 255 / 0.025); }
.button-ghost:hover:not(:disabled) { border-color: #777e73; background: rgb(255 255 255 / 0.055); }
.button-icon { width: 15px; height: 15px; flex: 0 0 auto; }

.tab-rail {
  min-height: 50px;
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  padding: 0 22px;
  background: var(--shell-deep);
  border-bottom: 1px solid #464c44;
}
.tab-list { display: flex; }
.tab {
  position: relative;
  min-width: 144px;
  justify-content: center;
  gap: 8px;
  padding: 0 19px;
  border: 0;
  border-right: 1px solid #393e38;
  color: #989e95;
  background: transparent;
  font-size: 11px;
  font-weight: 680;
}
.tab:first-child { border-left: 1px solid #393e38; }
.tab:hover { color: #e6e3da; background: rgb(255 255 255 / 0.025); }
.tab.is-active { color: #dce9e2; background: var(--shell-raised); }
.tab.is-active::after { content: ''; position: absolute; left: 20px; right: 20px; bottom: 0; height: 2px; background: var(--sage); }
.tab-icon { width: 17px; height: 17px; color: #7c8f85; }
.tab.is-active .tab-icon { color: var(--sage); }

.safety-note {
  display: flex;
  align-items: center;
  gap: 7px;
  color: #92988f;
  font-size: 10px;
  font-weight: 650;
  letter-spacing: 0.055em;
  text-transform: uppercase;
}
.safety-icon { width: 15px; height: 15px; color: var(--sage); }

.control-deck {
  min-height: 112px;
  padding: 18px 24px;
  background: var(--shell-raised);
  border-bottom: 1px solid #52584f;
  box-shadow: inset 0 1px rgb(255 255 255 / 0.025), inset 0 -8px 20px rgb(0 0 0 / 0.08);
}

.tab-panel {
  min-height: 76px;
  display: none;
  align-items: end;
  grid-template-columns: repeat(5, minmax(130px, 1fr));
  gap: 22px;
}
.tab-panel.is-active { display: grid; }
.tab-panel[hidden] { display: none; }
#panel-compose { grid-template-columns: repeat(6, minmax(110px, 1fr)); }
#panel-materials { grid-template-columns: repeat(7, minmax(96px, 1fr)); }

.readability-control {
  grid-column: 1 / -1;
  padding: 11px 13px 9px;
  border: 1px solid #50574e;
  border-radius: 10px;
  background: #292d28;
  box-shadow: inset 0 1px 2px rgb(0 0 0 / 0.24);
}
.readability-control .control-label { margin-bottom: 4px; }
.readability-control .control-label > span { display: flex; align-items: baseline; gap: 10px; }
.readability-control output { flex: 0 0 auto; white-space: nowrap; }
.readability-control .control-label small { color: #a3aaa1; font-size: 9px; font-weight: 500; letter-spacing: 0; text-transform: none; }
.readability-scale { display: flex; justify-content: space-between; color: #aab1a8; font-size: 9px; font-weight: 650; letter-spacing: 0.055em; text-transform: uppercase; }

fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
legend, .control-label, .profile-form > label {
  width: 100%;
  margin-bottom: 8px;
  justify-content: space-between;
  color: #afb5ac;
  font-size: 10px;
  font-weight: 720;
  line-height: 1.2;
  letter-spacing: 0.065em;
  text-transform: uppercase;
}
.control output { color: #c2d6cc; letter-spacing: 0; }

.segmented-control { display: grid; grid-template-columns: repeat(3, 1fr); overflow: hidden; border: 1px solid #565d54; border-radius: 8px; }
#styleControl { grid-template-columns: repeat(2, 1fr); }
.segment {
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border: 0;
  border-right: 1px solid #50574e;
  color: #adb3aa;
  background: #272b27;
  font-size: 11px;
  font-weight: 680;
}
.segment:last-child { border-right: 0; }
.segment:hover { color: #f0ede5; }
.segment.is-active { color: #202823; background: var(--sage); }
.instrument-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; opacity: 0.75; }
.pencil-dot { border-radius: 0; transform: rotate(45deg); }
.marker-dot { width: 8px; height: 5px; border-radius: 1px; }

input[type='range'] { width: 100%; height: 18px; margin: 0; appearance: none; background: transparent; }
input[type='range']::-webkit-slider-runnable-track { height: 4px; border-radius: 4px; background: linear-gradient(90deg, var(--sage-deep), #596159); }
input[type='range']::-webkit-slider-thumb { width: 14px; height: 18px; margin-top: -7px; appearance: none; border: 2px solid #29302b; border-radius: 5px; background: #b7cec2; box-shadow: 0 0 0 1px #c8dcd2; }
input[type='range']::-moz-range-track { height: 4px; border-radius: 4px; background: #596159; }
input[type='range']::-moz-range-progress { height: 4px; border-radius: 4px; background: var(--sage-deep); }
input[type='range']::-moz-range-thumb { width: 11px; height: 15px; border: 2px solid #29302b; border-radius: 5px; background: #b7cec2; }

input[type='number'], input[type='text'], .profile-form input, select {
  width: 100%;
  height: 36px;
  padding: 0 10px;
  border: 1px solid #565d54;
  border-radius: 8px;
  color: #eeeae1;
  background: #262a26;
  font-size: 11px;
}
select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--sage) 50%), linear-gradient(135deg, var(--sage) 50%, transparent 50%);
  background-position: calc(100% - 14px) 15px, calc(100% - 9px) 15px;
  background-size: 5px 5px;
  background-repeat: no-repeat;
}
select:disabled { opacity: 0.45; cursor: not-allowed; }

.toggle-control {
  min-height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 11px;
  border: 1px solid #50574e;
  border-radius: 9px;
  color: #e1ded5;
  background: #292d28;
}
.toggle-control strong { display: block; font-size: 11px; letter-spacing: 0.025em; }
.toggle-control small { display: block; margin-top: 3px; color: #a3aaa1; font-size: 10px; }
.toggle-control input { position: absolute; opacity: 0; }
.toggle { position: relative; flex: 0 0 auto; width: 36px; height: 20px; border-radius: 11px; background: #555c54; transition: background 120ms ease; }
.toggle::after { content: ''; position: absolute; top: 3px; left: 3px; width: 14px; height: 14px; border-radius: 50%; background: #b3b8b0; transition: transform 120ms ease, background 120ms ease; }
.toggle-control input:checked + .toggle { background: var(--sage-deep); }
.toggle-control input:checked + .toggle::after { transform: translateX(16px); background: #d4e2db; }
.toggle-control:has(input:focus-visible) { outline: 3px solid var(--focus); outline-offset: 2px; }

.color-field { height: 36px; display: flex; align-items: center; gap: 9px; padding: 4px 8px; border: 1px solid #565d54; border-radius: 8px; background: #262a26; }
.color-field input { width: 27px; height: 25px; padding: 0; border: 0; background: transparent; }
.color-field code { color: #d6dbd3; font-size: 10px; }

.material-readout { min-height: 61px; align-self: stretch; padding: 9px 12px; border-left: 3px solid var(--clay); border-radius: 0 8px 8px 0; background: #292d28; }
.material-readout span, .material-readout small { display: block; color: #a3aaa1; font-size: 9px; line-height: 1.25; text-transform: uppercase; letter-spacing: 0.065em; }
.material-readout strong { display: block; margin: 5px 0 4px; color: #e5e1d8; font-size: 11px; }
.material-readout small { text-transform: none; letter-spacing: 0; }

.profiles-panel { grid-template-columns: minmax(260px, 0.75fr) minmax(440px, 2fr); align-items: stretch; }
.profile-form { display: flex; flex-direction: column; justify-content: center; }
.profile-input-row { gap: 8px; }
.profile-input-row .button { flex: 0 0 auto; }
.profile-form small { margin-top: 6px; color: #a3aaa1; font-size: 10px; }
.profile-list-wrap { min-width: 0; }
.profile-list { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 3px; scrollbar-color: #5b645b transparent; scrollbar-width: thin; }
.profile-card { min-width: 170px; display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: center; padding: 9px 10px; border: 1px solid #50574e; border-radius: 8px; background: #282c28; }
.profile-card button { overflow: hidden; border: 0; color: #e3e0d7; background: transparent; text-align: left; }
.profile-card button strong, .profile-card button small { display: block; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.profile-card button strong { font-size: 10px; }
.profile-card button small { margin-top: 3px; color: #a2a99f; font-size: 9px; text-transform: uppercase; }
.profile-card .delete-profile { width: 28px; height: 28px; display: grid; place-items: center; padding: 0; line-height: 1; text-align: center; color: #9aa198; border: 1px solid #4f564e; border-radius: 6px; }
.profile-card .delete-profile:hover { color: #ef9b78; border-color: var(--clay); }

.workspace {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) 40px minmax(0, 1.12fr);
  gap: 0;
  min-height: 590px;
  padding: 20px 24px 24px;
  background: #222520;
}

.pane {
  min-width: 0;
  min-height: 550px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--paper-line);
  border-radius: 11px;
  box-shadow: 0 14px 32px rgb(0 0 0 / 0.22), 0 2px 5px rgb(0 0 0 / 0.18);
}
.pane:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
.pane-header, .pane-footer { display: flex; align-items: center; justify-content: space-between; }
.pane-header { min-height: 64px; padding: 10px 14px; background: #f5f0e5; border-bottom: 1px solid var(--paper-line); }
.pane-header > div { gap: 10px; }
.pane-header p { margin: 0 0 3px; font-size: 12px; font-weight: 820; letter-spacing: 0.025em; }
.pane-header small { color: #55625d; font-size: 10px; }
.pane-index { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 7px; color: #eff6f2; background: var(--sage-deep); font: 800 11px ui-monospace, monospace; }
.pane-index-output { color: #fff5ef; background: var(--clay-deep); }
.source-actions { gap: 2px !important; }
.text-button { min-height: 34px; display: inline-flex; align-items: center; gap: 5px; padding: 6px 8px; border-radius: 6px; color: #596b64; font-size: 10px; font-weight: 750; }
.text-button:hover { color: #914a34; background: rgb(169 88 60 / 0.07); }
.mobile-pane-link { display: none; }
.inline-icon { width: 13px; height: 13px; transform: rotate(180deg); }
.live-badge { gap: 6px; padding: 5px 8px; border: 1px solid #b8b09f; border-radius: 12px; color: #4d5d57; font-size: 9px; font-weight: 780; text-transform: uppercase; letter-spacing: 0.055em; }
.live-badge i { width: 6px; height: 6px; border-radius: 50%; background: #4e9276; box-shadow: 0 0 0 3px rgb(78 146 118 / 0.13); }
.preview-tools { gap: 7px; }
.zoom-control, .page-control { height: 28px; border: 1px solid #beb5a3; border-radius: 7px; background: #e7dfd0; }
.zoom-control { display: flex; padding: 2px; }
.zoom-button { min-width: 36px; height: 22px; padding: 0 6px; border: 0; border-radius: 5px; color: #505e59; background: transparent; font-size: 9px; font-weight: 800; text-transform: uppercase; }
.zoom-button:hover { color: #314642; }
.zoom-button.is-active { color: #f4f8f5; background: var(--sage-deep); }
.page-control { gap: 2px !important; padding: 2px; }
.page-control span { min-width: 42px; color: #53615c; font: 750 9px ui-monospace, monospace; text-align: center; }
.page-button { width: 22px; height: 22px; display: grid; place-items: center; border-radius: 5px; color: #53635d; font-size: 17px; line-height: 1; }
.page-button:hover:not(:disabled) { color: #f4f8f5; background: var(--sage-deep); }

.source-field { position: relative; flex: 1; min-height: 0; background: #f6f0e2; }
.source-field textarea {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 100%;
  min-height: 430px;
  resize: none;
  padding: 34px 38px;
  border: 0;
  outline-offset: -4px;
  color: #303936;
  background: transparent;
  font: 17px/1.72 ui-monospace, "SFMono-Regular", Consolas, monospace;
}
.source-field textarea::selection { color: #17201c; background: #bdd1c7; }
.textarea-grid { position: absolute; inset: 0; pointer-events: none; opacity: 0.35; background-image: linear-gradient(#cdc5b5 1px, transparent 1px); background-size: 100% 29px; }

.pane-footer { min-height: 39px; padding: 0 14px; color: #4e5a55; background: #e5dece; border-top: 1px solid var(--paper-line); font-size: 9px; font-weight: 650; letter-spacing: 0.045em; text-transform: uppercase; }
.pane-footer b { color: #3f504a; }

.flow-indicator { position: relative; z-index: 3; display: grid; place-items: center; }
.flow-indicator::before { content: ''; position: absolute; left: 0; right: 0; height: 1px; background: #525a51; }
.flow-indicator span { position: relative; width: 30px; height: 30px; display: grid; place-items: center; color: #d9e8e0; background: #2a302b; border: 1px solid #687168; border-radius: 50%; font-size: 13px; }

.canvas-stage { flex: 1; min-height: 0; overflow: auto; display: grid; align-items: start; justify-items: center; padding: 24px; background: #b9b2a3; scrollbar-width: thin; scrollbar-color: #827b6e #aaa293; }
.page-shadow { width: min(100%, 640px); line-height: 0; box-shadow: 0 15px 27px rgb(49 43 33 / 0.25), 0 2px 4px rgb(49 43 33 / 0.2); transform: rotate(-0.1deg); }
.page-shadow.is-actual-size { width: 1100px; max-width: none; justify-self: start; }
canvas { display: block; width: 100%; height: auto; background: #f5f0df; }

.system-strip { min-height: 35px; gap: 18px; padding: 0 24px; color: #979d95; background: #1d201c; border-top: 1px solid #41463f; font-size: 9px; font-weight: 650; letter-spacing: 0.06em; text-transform: uppercase; }
.system-strip > span:not(:first-child)::before { content: '·'; margin-right: 18px; color: #555c54; }
.system-label { color: #df906b; }
.system-message { margin-left: auto; color: #a9afa6; }

.metadata-dialog { width: min(620px, calc(100vw - 30px)); padding: 0; color: #e2dfd6; background: var(--shell); border: 1px solid #60675d; border-radius: 13px; box-shadow: 0 30px 90px rgb(0 0 0 / 0.68); }
.metadata-dialog::backdrop { background: rgb(7 9 7 / 0.72); backdrop-filter: blur(4px); }
.dialog-frame { padding: 0; }
.dialog-frame > header, .dialog-frame > footer { display: flex; align-items: center; justify-content: space-between; padding: 16px 18px; background: #32362f; }
.dialog-frame > header { border-bottom: 1px solid #53594f; }
.dialog-frame > footer { justify-content: flex-end; gap: 8px; border-top: 1px solid #53594f; }
.dialog-frame h2 { margin: 2px 0 0; font: 700 20px/1.1 "Iowan Old Style", "Palatino Linotype", Georgia, serif; }
.icon-button { width: 34px; height: 34px; color: #afb5ac; font-size: 25px; }
.dialog-copy { margin: 0; padding: 16px 18px 0; color: #b4bab1; font-size: 12px; line-height: 1.5; }
.metadata-summary { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; margin: 16px 18px 0; }
.metadata-summary > div { min-width: 0; padding: 12px; border: 1px solid #4e554c; border-radius: 8px; background: #262a26; }
.metadata-summary dt { color: #a3aaa1; font-size: 9px; font-weight: 720; letter-spacing: 0.065em; text-transform: uppercase; }
.metadata-summary dd { overflow: hidden; margin: 5px 0 0; color: #e7e3da; font-size: 12px; font-weight: 680; white-space: nowrap; text-overflow: ellipsis; }
.metadata-technical { margin: 12px 18px 16px; border: 1px solid #4e554c; border-radius: 8px; background: #20241f; }
.metadata-technical summary { padding: 11px 13px; color: #c7dbd0; cursor: pointer; font-size: 11px; font-weight: 700; }
.metadata-technical[open] summary { border-bottom: 1px solid #4e554c; }
.dialog-frame pre { max-height: 260px; margin: 0; overflow: auto; padding: 14px; color: #c7dbd0; font: 10px/1.55 ui-monospace, monospace; white-space: pre-wrap; }

.print-document { display: none; }

@media (max-width: 1050px) {
  body { padding: 14px; }
  .titlebar { grid-template-columns: 1fr auto; }
  .header-status { display: none; }
  .tab-panel { grid-template-columns: repeat(3, minmax(130px, 1fr)); }
  #panel-compose { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  #panel-materials { grid-template-columns: repeat(3, minmax(130px, 1fr)); }
  .workspace { grid-template-columns: 1fr 30px 1.15fr; padding-inline: 16px; }
  .system-strip span:nth-child(3), .system-strip span:nth-child(4) { display: none; }
}

@media (max-width: 760px) {
  body { padding: 0; }
  .app-shell { border: 0; border-radius: 0; }
  .titlebar { grid-template-columns: 1fr; gap: 14px; padding: 15px 16px; }
  .header-actions { width: 100%; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .header-actions .button { width: 100%; min-height: 42px; padding-inline: 7px; }
  .tab-rail { padding: 0; overflow-x: auto; }
  .tab-list { width: 100%; }
  .tab { min-width: 25%; flex: 1 0 25%; gap: 5px; padding-inline: 4px; font-size: 10px; }
  .tab-icon { width: 14px; height: 14px; }
  .safety-note { display: none; }
  .control-deck { min-height: 180px; padding: 16px; }
  .tab-panel { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 15px; }
  #panel-compose, #panel-materials { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .profiles-panel { grid-template-columns: 1fr; }
  .workspace { grid-template-columns: 1fr; gap: 14px; min-height: 0; padding: 14px 12px 18px; }
  .pane { min-height: 430px; }
  .source-pane { min-height: 370px; }
  .source-field textarea { min-height: 250px; padding: 28px 24px; }
  .flow-indicator { display: none; }
  .canvas-stage { max-height: 540px; padding: 16px; }
  .preview-pane .pane-header { align-items: flex-start; flex-wrap: wrap; gap: 8px; }
  .preview-pane .pane-header > div:first-child { width: 100%; }
  .preview-pane .preview-tools { margin-left: 40px; }
  .source-pane .pane-header { align-items: flex-start; flex-wrap: wrap; gap: 8px; }
  .source-pane .pane-header > div:first-child { width: 100%; }
  .source-pane .source-actions { margin-left: 40px; }
  .mobile-pane-link { display: inline-flex; }
  .system-strip { padding: 0 14px; }
  .system-strip > span:not(.system-label):not(.system-message) { display: none; }
  .readability-control .control-label > span { align-items: flex-start; flex-direction: column; gap: 3px; }
}

@media (max-width: 380px) {
  .header-actions .button { gap: 4px; font-size: 9px; }
  .header-actions .button-icon { display: none; }
  .segment { padding-inline: 4px; font-size: 9px; }
  .instrument-dot { display: none; }
  .source-actions { gap: 0 !important; }
  .text-button { padding-inline: 5px; font-size: 9px; }
  .source-pane .source-actions { width: 100%; margin-left: 0; justify-content: flex-end; }
  .preview-pane .preview-tools { margin-left: 0; width: 100%; justify-content: flex-end; }
}

@page { size: Letter portrait; margin: 0; }

@media print {
  :root { color-scheme: light; }
  body { min-width: 0; min-height: 0; padding: 0; background: #fff; }
  .app-shell, .metadata-dialog, .ambient-grid { display: none !important; }
  .print-document { display: block; }
  .print-page { width: 8.5in; height: 11in; margin: 0; overflow: hidden; break-after: page; page-break-after: always; }
  .print-page:last-child { break-after: auto; page-break-after: auto; }
  .print-page canvas { width: 8.5in; height: 11in; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}