:root {
  --bg: #05070a;
  --ink: #ebe3cf;
  --dim: #8f8670;
  --brass: #c9a45a;
  --red: #b8412a;
  --warn: #df8a3c;
  --good: #a7c48c;
  --sea: #6f93a8;
  --line: rgba(235, 227, 207, 0.15);
  --paper: #e4d9bd;
  --paperInk: #2a2117;
  --mono: "Courier New", "Lucida Console", monospace;
  --sans: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--ink); overflow: hidden; font: 14px/1.45 var(--sans); }
#app { position: fixed; inset: 0; user-select: none; -webkit-user-select: none; }
#gl { position: absolute; inset: 0; width: 100%; height: 100%; display: block; outline: none; cursor: none; }
.hidden { display: none !important; }
.overlay { position: absolute; inset: 0; }

/* ---------------------------------------------------------------- HUD */
#hud { position: absolute; inset: 0; pointer-events: none; }
#cross { position: absolute; left: 50%; top: 50%; width: 4px; height: 4px; margin: -2px 0 0 -2px; border-radius: 50%; background: rgba(235, 227, 207, 0.5); box-shadow: 0 0 4px rgba(0,0,0,0.8); transition: transform .12s, background .12s; }
#cross.hot { transform: scale(2.2); background: var(--brass); }
#cross.off { opacity: 0; }
#prompt { position: absolute; left: 50%; top: calc(50% + 26px); transform: translateX(-50%); font: 600 13px var(--sans); letter-spacing: .05em; color: var(--ink); text-shadow: 0 0 6px #000, 0 0 2px #000; white-space: nowrap; text-align: center; }
#prompt kbd, #scope kbd, #inhand kbd { display: inline-block; min-width: 20px; padding: 0 5px; margin-right: 5px; border: 1px solid rgba(235,227,207,.55); border-radius: 3px; font: 700 11px var(--mono); color: #fff; text-align: center; }
#prompt .sub { display: block; margin-top: 3px; font: italic 400 12px var(--serif); letter-spacing: .02em; color: var(--dim); }
#hold { position: absolute; left: 50%; top: calc(50% + 70px); width: 180px; height: 5px; margin-left: -90px; background: rgba(0,0,0,.5); border: 1px solid rgba(235,227,207,.3); }
#hold i { position: absolute; left: 0; top: 0; bottom: 0; background: var(--brass); }
#voices { position: absolute; left: 28px; bottom: 26px; width: min(620px, 60vw); display: flex; flex-direction: column; gap: 5px; }
#voices .v { padding: 7px 13px 8px; background: linear-gradient(90deg, rgba(5,6,8,.82), rgba(5,6,8,.35)); border-left: 2px solid var(--dim); font: 400 15px/1.45 var(--serif); color: #ece5d4; animation: vin .4s ease-out; transition: opacity 1.2s; }
#voices .v b { font: 700 10px var(--mono); letter-spacing: .22em; color: var(--brass); text-transform: uppercase; margin-right: 8px; }
#voices .v.warn { border-left-color: var(--warn); }
#voices .v.alarm { border-left-color: var(--red); background: linear-gradient(90deg, rgba(40,8,4,.85), rgba(10,4,4,.4)); }
#voices .v.done { border-left-color: var(--good); }
#voices .v.bell { border-left-color: var(--brass); font-style: italic; color: var(--dim); }
#voices .v.fade { opacity: 0; }
@keyframes vin { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
#toast { position: absolute; right: 28px; top: 24px; display: flex; flex-direction: column; gap: 6px; align-items: flex-end; max-width: 46vw; }
#toast .t { padding: 7px 12px; background: rgba(6,6,7,.82); border-right: 2px solid var(--brass); font: 500 13px var(--sans); color: var(--ink); animation: toastin .4s ease-out; }
#toast .t.good { border-right-color: var(--good); }
#toast .t.bad { border-right-color: var(--red); }
@keyframes toastin { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: none; } }
#warp { position: absolute; right: 28px; bottom: 24px; font: 700 12px var(--mono); letter-spacing: .18em; color: var(--brass); text-shadow: 0 0 6px #000; text-align: right; }
#warp small { display: block; font: 500 11px var(--sans); letter-spacing: .04em; color: var(--dim); }
#inhand { position: absolute; left: 50%; bottom: 22px; transform: translateX(-50%); font: 500 12px var(--sans); color: var(--dim); text-shadow: 0 0 6px #000; white-space: nowrap; }
#savemark { position: absolute; right: 28px; top: 8px; font: 600 11px var(--mono); letter-spacing: .2em; color: var(--dim); opacity: 0; transition: opacity .6s; }
#savemark.show { opacity: 1; }
/* the sextant: what the observer sees on the instrument */
#scope { position: absolute; inset: 0; }
#scope .read { position: absolute; left: 50%; top: 18px; transform: translateX(-50%); padding: 6px 14px; background: rgba(4,5,6,.72); border: 1px solid rgba(201,164,90,.35); font: 700 15px var(--mono); letter-spacing: .1em; color: var(--brass); text-align: center; }
#scope .read small { display: block; font: 500 11px var(--sans); color: var(--dim); letter-spacing: .03em; margin-top: 2px; }
#scope .help { position: absolute; left: 50%; bottom: 22px; transform: translateX(-50%); font: 500 12px var(--sans); color: var(--dim); text-shadow: 0 0 6px #000; white-space: nowrap; }

/* ---------------------------------------------------------------- documents */
#doc { display: grid; place-items: center; background: rgba(0,0,0,.74); }
#doc .paper { width: min(660px, 92vw); max-height: 86vh; overflow: auto; padding: 34px 42px 22px; background: var(--paper) linear-gradient(180deg, rgba(120,90,40,.06), rgba(80,60,30,.16)); color: var(--paperInk); box-shadow: 0 20px 60px rgba(0,0,0,.85); font: 16px/1.62 var(--serif); transform: rotate(-.3deg); }
#doc .paper.hand { font-family: "Segoe Script", "Segoe Print", "Bradley Hand", cursive; font-size: 15px; line-height: 27px; transform: rotate(.4deg); }
#doc .doc-head { font: 700 11px var(--mono); letter-spacing: .25em; text-transform: uppercase; opacity: .6; margin-bottom: 14px; }
#doc .doc-body p { margin: 0 0 12px; }
#doc .doc-foot { margin-top: 18px; font: 600 11px var(--sans); letter-spacing: .1em; opacity: .5; text-align: right; }

/* ---------------------------------------------------------------- orders */
#orders { display: grid; place-items: center; background: rgba(0,0,0,.45); }
#orders .ord { width: min(820px, 94vw); max-height: 90vh; overflow: auto; padding: 18px 22px; background: rgba(14,13,11,.96); border: 1px solid rgba(201,164,90,.35); box-shadow: 0 20px 60px #000; }
#orders h3 { margin: 0 0 4px; font: 400 22px var(--serif); letter-spacing: .08em; color: var(--ink); }
#orders .st { font: 500 12px var(--sans); color: var(--dim); margin-bottom: 12px; }
#orders .grp { margin: 12px 0 4px; font: 700 10px var(--mono); letter-spacing: .24em; color: var(--brass); text-transform: uppercase; }
#orders .row { display: flex; flex-wrap: wrap; gap: 6px; }
#orders button { padding: 7px 11px; background: rgba(255,255,255,.03); border: 1px solid var(--line); color: var(--ink); font: 500 13px var(--sans); cursor: pointer; }
#orders button:hover:not(:disabled) { border-color: var(--brass); color: #fff; }
#orders button.on { border-color: var(--brass); background: rgba(201,164,90,.14); }
#orders button:disabled { opacity: .35; cursor: default; }
#orders .rose { display: flex; gap: 16px; align-items: center; }
#orders canvas { cursor: pointer; }
#orders input { background: #0f0e0c; color: var(--ink); border: 1px solid var(--line); padding: 6px 8px; font: 600 14px var(--mono); width: 90px; }
#orders .foot { margin-top: 14px; font: 500 11px var(--sans); color: var(--dim); }

/* ---------------------------------------------------------------- notebook */
#notebook { display: grid; place-items: center; background: rgba(0,0,0,.62); }
#notebook .nb { width: min(1260px, 97vw); height: min(820px, 94vh); display: flex; flex-direction: column; background: #1a1712 linear-gradient(180deg, rgba(255,240,200,.03), rgba(0,0,0,.2)); border: 1px solid rgba(201,164,90,.3); box-shadow: 0 20px 60px #000; }
#notebook .nb-head { display: flex; justify-content: space-between; padding: 10px 18px 7px; font: 700 11px var(--mono); letter-spacing: .2em; color: var(--brass); border-bottom: 1px solid var(--line); }
#notebook .nb-clock { color: var(--dim); letter-spacing: .1em; }
#notebook .tabs { display: flex; flex-wrap: wrap; border-bottom: 1px solid var(--line); }
#notebook .tabs button { padding: 9px 14px; background: none; border: 0; border-bottom: 2px solid transparent; color: var(--dim); font: 700 11px var(--sans); letter-spacing: .14em; text-transform: uppercase; cursor: pointer; }
#notebook .tabs button.on { color: var(--ink); border-bottom-color: var(--brass); }
#notebook .pane { flex: 1; overflow: auto; padding: 16px 22px; font: 15px/1.6 var(--serif); color: #d8d0bd; position: relative; }
#notebook .foot { padding: 7px 16px; font: 600 11px var(--sans); color: var(--dim); text-align: right; border-top: 1px solid var(--line); }
#notebook .note, #notebook .empty { color: var(--dim); font-style: italic; }
#notebook table { border-collapse: collapse; font-family: var(--sans); font-size: 13px; }
#notebook td, #notebook th { padding: 5px 8px; border-bottom: 1px solid rgba(255,255,255,.05); vertical-align: top; text-align: left; }
#notebook th { font: 700 10px var(--mono); letter-spacing: .14em; color: var(--brass); text-transform: uppercase; border-bottom: 1px solid var(--line); }
#notebook kbd { padding: 1px 6px; border: 1px solid rgba(235,227,207,.4); border-radius: 3px; font: 700 11px var(--mono); color: var(--brass); }
#notebook .num { font-family: var(--mono); text-align: right; white-space: nowrap; }
#notebook h2 { font: 400 22px var(--serif); letter-spacing: .06em; color: var(--ink); margin: 6px 0 10px; }
#notebook h3 { font: 700 11px var(--mono); letter-spacing: .2em; color: var(--brass); text-transform: uppercase; margin: 18px 0 8px; }
#notebook p { margin: 0 0 10px; }
#notebook button.act { padding: 6px 12px; background: rgba(255,255,255,.04); border: 1px solid var(--line); color: var(--ink); font: 600 12px var(--sans); cursor: pointer; letter-spacing: .04em; }
#notebook button.act:hover { border-color: var(--brass); }
#notebook button.act.on { border-color: var(--brass); background: rgba(201,164,90,.14); }
#notebook input, #notebook select, #notebook textarea { background: #0f0e0c; color: var(--ink); border: 1px solid var(--line); padding: 4px 6px; font: 600 13px var(--mono); }
#notebook input.bad { border-color: var(--red); }
#notebook .side { display: flex; gap: 18px; height: 100%; }
#notebook .side .list { flex: 0 0 250px; border-right: 1px solid var(--line); padding-right: 12px; overflow: auto; }
#notebook .side .list button { display: block; width: 100%; text-align: left; padding: 7px 10px; margin-bottom: 2px; background: none; border: 0; color: #b8af9c; font: 500 13px var(--sans); cursor: pointer; }
#notebook .side .list button:hover, #notebook .side .list button.on { background: rgba(201,164,90,.1); color: var(--ink); }
#notebook .side .view { flex: 1; overflow: auto; }
/* chart */
#nb-chart { padding: 0; overflow: hidden; }
#nb-chart canvas { display: block; position: absolute; inset: 0; cursor: crosshair; }
#nb-chart .tools { position: absolute; left: 10px; top: 10px; display: flex; flex-direction: column; gap: 4px; z-index: 2; }
#nb-chart .tools button { padding: 6px 10px; background: rgba(28,24,18,.92); border: 1px solid rgba(80,60,30,.6); color: var(--ink); font: 600 12px var(--sans); cursor: pointer; text-align: left; }
#nb-chart .tools button.on { border-color: var(--brass); background: rgba(90,70,30,.9); }
#nb-chart .readout { position: absolute; right: 10px; bottom: 10px; z-index: 2; padding: 6px 10px; background: rgba(28,24,18,.9); border: 1px solid rgba(80,60,30,.6); font: 600 12px var(--mono); color: var(--ink); white-space: pre; pointer-events: none; }
#nb-chart .entry { position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); z-index: 3; padding: 14px 16px; background: rgba(20,18,14,.97); border: 1px solid var(--brass); }
#nb-chart .tools button:disabled { cursor: default; opacity: .75; }
#nb-notes { display: flex; flex-direction: column; }
#notebook textarea.notepad { flex: 1; min-height: 300px; width: 100%; resize: none; padding: 12px 14px; font: 15px/1.6 var(--serif); user-select: text; -webkit-user-select: text; }
#nb-chart .entry label { display: block; font: 600 12px var(--sans); color: var(--dim); margin: 6px 0 2px; }
/* the paper pages (log, workbook, almanac, tables, navigator) */
.sheet { background: var(--paper) linear-gradient(180deg, rgba(120,90,40,.05), rgba(80,60,30,.14)); color: var(--paperInk); padding: 18px 22px; box-shadow: 0 6px 20px rgba(0,0,0,.5); }
.sheet table td, .sheet table th { border-bottom-color: rgba(60,40,20,.15) !important; color: var(--paperInk); }
.sheet th { color: #6b4a1e !important; }
.sheet h2, .sheet h3 { color: #4a321a !important; }
.sheet .note { color: #6d5d44 !important; }
.sheet input, .sheet select { background: #f1e8d2 !important; color: #1b140c !important; border: 1px solid rgba(60,40,20,.35) !important; }
.sheet .res { font: 700 14px var(--mono); color: #1d3a5a; }
.sheet .work { font: 13px/1.7 var(--mono); color: #3a2c1c; white-space: pre-wrap; }
.sheet .bad { color: #9b2a14; }

/* ---------------------------------------------------------------- menu */
#menu { display: flex; align-items: center; background: linear-gradient(90deg, rgba(0,0,0,.88) 0%, rgba(0,0,0,.6) 38%, rgba(0,0,0,.05) 74%); }
#menu .menu { margin-left: 8vw; width: min(520px, 84vw); max-height: 92vh; overflow: auto; }
#menu .t1 { font: 400 72px var(--serif); letter-spacing: .14em; color: var(--ink); text-transform: uppercase; }
#menu .sub { margin: 10px 0 34px; font: 600 10px var(--mono); letter-spacing: .25em; color: var(--sea); }
#menu .items button { display: block; width: 100%; padding: 9px 0 9px 2px; background: none; border: 0; text-align: left; color: #bdb4a2; font: 400 19px var(--serif); letter-spacing: .1em; text-transform: uppercase; cursor: pointer; transition: color .15s, padding .15s; }
#menu .items button:hover:not(:disabled), #menu .items button:focus-visible { color: #fff; padding-left: 12px; outline: none; }
#menu .items button:disabled { color: #4d473d; cursor: default; }
#menu .items button small { display: block; font: 500 11px var(--sans); letter-spacing: .05em; text-transform: none; color: var(--dim); }
#menu .status { margin-top: 26px; font: 500 12px var(--sans); color: var(--dim); min-height: 1.2em; }
#menu .status a { color: var(--brass); }
#menu .panel h3 { margin: 0 0 12px; font: 400 22px var(--serif); letter-spacing: .1em; text-transform: uppercase; }
#menu .panel .note { margin: 0 0 14px; font-size: 13px; color: var(--dim); }
#menu .panel .row { display: flex; align-items: center; gap: 12px; padding: 7px 0; border-bottom: 1px solid rgba(255,255,255,.05); }
#menu .panel .row label { flex: 1; color: #cbc2ae; }
#menu .panel .row .val { width: 48px; text-align: right; color: var(--dim); font: 600 12px var(--mono); }
#menu .panel input[type=range] { width: 160px; accent-color: var(--brass); }
#menu .panel select { background: #15120d; color: var(--ink); border: 1px solid var(--line); padding: 3px 6px; }
#menu .panel .slot { display: flex; width: 100%; align-items: center; justify-content: space-between; padding: 11px 13px; margin-bottom: 7px; background: rgba(255,255,255,.03); border: 1px solid var(--line); color: var(--ink); text-align: left; cursor: pointer; font: 14px var(--sans); }
#menu .panel .slot:hover:not(:disabled) { border-color: var(--brass); }
#menu .panel .slot:disabled { opacity: .4; cursor: default; }
#menu .panel .slot .n b { font: 400 17px var(--serif); letter-spacing: .06em; }
#menu .panel .slot .n span { display: block; color: var(--dim); font-size: 12px; margin-top: 2px; }
#menu .panel .slot .p { font: 700 13px var(--mono); color: var(--brass); }
#menu .panel .back { margin-top: 14px; padding: 8px 14px; background: none; border: 1px solid var(--line); color: var(--ink); cursor: pointer; font: 600 12px var(--sans); letter-spacing: .12em; }

/* ---------------------------------------------------------------- loading / ending / fatal */
#loading { display: grid; place-items: center; background: #000; }
#loading .load { width: min(440px, 80vw); text-align: center; }
#loading .lt { font: 400 34px var(--serif); letter-spacing: .4em; color: var(--ink); margin-bottom: 22px; }
#loading .bar { height: 2px; background: #1c1914; }
#loading .bar span { display: block; height: 100%; width: 0; background: var(--brass); transition: width .2s; }
#loading .ls { margin-top: 10px; font: 600 11px var(--mono); letter-spacing: .14em; color: var(--dim); }
#loading .warn { margin-top: 34px; font: 500 12px var(--sans); color: #5e574b; }
#ending { display: grid; place-items: center; background: rgba(0,0,0,.9); }
#ending .end { width: min(760px, 92vw); max-height: 92vh; overflow: auto; text-align: left; }
#ending h2 { font: 400 42px var(--serif); letter-spacing: .24em; margin: 0 0 22px; font-weight: 400; }
#ending h2.bad { color: var(--red); }
#ending p { color: #d2c9b6; font: 17px/1.7 var(--serif); }
#ending .meta { margin-top: 18px; font: 600 11px var(--mono); color: var(--dim); letter-spacing: .12em; }
#ending canvas { display: block; margin: 16px 0; max-width: 100%; border: 1px solid var(--line); }
#ending .btns { margin-top: 26px; display: flex; gap: 10px; }
#ending .btns button { padding: 10px 18px; background: none; border: 1px solid var(--line); color: var(--ink); font: 600 13px var(--sans); letter-spacing: .1em; text-transform: uppercase; cursor: pointer; }
#ending .btns button:hover { border-color: var(--brass); }
#fatal { display: grid; place-items: center; background: #000; }
#fatal .fatal { width: min(560px, 90vw); color: var(--ink); font: 15px/1.6 var(--sans); }
#fatal a { color: var(--brass); }
/* the eras on the new-voyage page */
#menu .panel .slot.era { align-items: flex-start; gap: 12px; }
#menu .panel .slot.era .num { flex: 0 0 38px; font: 400 26px var(--serif); color: var(--brass); line-height: 1.1; }
#menu .panel .slot.era .n { flex: 1; }
#menu .panel .slot.era .p { flex: 0 0 auto; font: 600 10px var(--sans); letter-spacing: .12em; text-transform: uppercase; color: var(--dim); }
#menu .panel .assist { display: flex; gap: 10px; align-items: flex-start; margin: 10px 0 4px; font-size: 13px; color: #cbc2ae; cursor: pointer; }
#menu .panel .assist input { margin-top: 3px; accent-color: var(--brass); }
/* the calculator: formulas with the values written into them */
#nb-calc .calc { display: grid; grid-template-columns: repeat(auto-fill, minmax(520px, 1fr)); gap: 14px; }
#nb-calc .card { padding: 14px 18px 12px; }
#nb-calc .card h3 { margin: 0 0 2px; }
#nb-calc .card .what { margin: 0 0 8px; font-size: 13px; }
#nb-calc .eq { font: 15px/2.1 var(--serif); color: #2a1e10; }
#nb-calc .eq input { width: 86px; padding: 2px 5px; font: 600 13px var(--mono); text-align: right; }
#nb-calc .eq select { padding: 2px 4px; font: 600 12px var(--sans); }
#nb-calc .top button.act { color: #3a2a18; border-color: rgba(60,40,20,.45); background: rgba(60,40,20,.06); }
#nb-calc .eq input.w { width: 120px; }
#nb-calc .eq input.s { width: 56px; }
#nb-calc .eq .op { padding: 0 4px; font-weight: 700; }
#nb-calc .eq .sym { font-style: italic; }
#nb-calc .eq .out { display: inline-block; min-width: 120px; padding: 1px 8px; background: rgba(29,58,90,.1); border-bottom: 2px solid #1d3a5a; font: 700 14px var(--mono); color: #1d3a5a; }
#nb-calc .eq .out.bad { color: #9b2a14; border-color: #9b2a14; background: rgba(155,42,20,.08); }
#nb-calc .fill { margin-left: 4px; padding: 1px 7px; font: 600 10px var(--sans); letter-spacing: .05em; background: rgba(60,40,20,.08); border: 1px solid rgba(60,40,20,.35); color: #4a321a; cursor: pointer; }
#nb-calc .fill:hover { background: rgba(60,40,20,.18); }
#nb-calc .card .steps { margin-top: 6px; font: 12px/1.6 var(--mono); color: #5a4630; white-space: pre-wrap; }
#nb-calc .top { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
#nb-calc .top input, #nb-calc .top select { padding: 3px 6px; font: 600 13px var(--mono); }