/* Application shell and shared controls. */
:root{color-scheme:light;--ink:#172d3e;--muted:#5d6f7c;--line:#d6e0e6;--green:#147663;--amber:#ffcf87;--screen:#09150f;--phosphor:#b6efc7;font:14px Arial,Helvetica,sans-serif;color:var(--ink);background:#e9eef1}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{width:100%;height:100%;margin:0;overflow:hidden}
body{height:100dvh;display:flex;flex-direction:column}
button,input,select,textarea{font:inherit}
button,select,input[type=number]{min-height:32px;border:1px solid #bacbd6;border-radius:4px;background:#fff;color:var(--ink)}
button{padding:6px 12px;cursor:pointer;font-weight:600;white-space:nowrap}
button:hover:not(:disabled){background:#eaf2f7;border-color:#5c829c}
button:disabled,input:disabled,select:disabled{opacity:.55;cursor:not-allowed}
input[type=number]{padding:5px 8px;width:100%;min-width:0}
select{padding:5px 24px 5px 8px;width:100%;min-width:0}
button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:2px solid #008ca3;outline-offset:2px}
.header{display:flex;flex:0 0 auto;align-items:center;gap:18px;padding:10px 18px;background:#fff;border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center}
.brand img{width:115px;height:auto}
.divider{width:1px;height:25px;background:var(--line)}
h1{margin:0;font-size:21px;letter-spacing:-.5px;font-weight:600;white-space:nowrap}
.version{font-size:12px;color:var(--muted);vertical-align:middle;letter-spacing:0;margin-left:5px}
.free{font-size:12px;color:var(--muted);margin-left:auto}
.help-link{color:var(--green)}
#settings-toggle{display:none}
/* The transcript keeps the full available height, independently of the sidebar. */
main{flex:1;min-height:0;min-width:0;display:grid;grid-template-columns:minmax(0,1fr) 344px;padding:12px;gap:12px;overflow:hidden}
.workspace{container-type:inline-size;min-width:0;min-height:0;display:flex;flex-direction:column;border:1px solid #344c40;border-radius:6px;overflow:hidden;background:var(--screen)}
.toolbar{flex:0 0 auto;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 12px;padding:8px 12px;background:#11251b;border-bottom:1px solid #294635;color:#d0e6d8}
.status{display:flex;align-items:center;gap:8px;font-size:13px;flex-wrap:wrap}
.dot{width:8px;height:8px;background:#7b8f83;border-radius:50%}
.dot.connected{background:#74e49e;box-shadow:0 0 0 3px #74e49e16}
#connection-summary{color:#9ebca8;font-size:12px}
.toolbar-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.toolbar-actions button{font-size:12px;min-height:28px;padding:4px 10px;background:transparent;border-color:#456350;color:#d0e6d8}
.toolbar-actions button:hover{background:#203d2b;border-color:#71937d}
.notice{flex:0 0 auto;padding:8px 12px;border-bottom:1px solid #405344;border-left:3px solid #4aa18c;background:#eff8f3;color:var(--ink);font-size:13px;line-height:1.4;overflow-wrap:anywhere}
.notice.error{border-left-color:#b74335;background:#fff4ef}
.screen-wrap{flex:1;min-height:0;display:flex;flex-direction:column;background:var(--screen)}
.terminal{flex:1;min-height:0;min-width:0;overflow:auto;overscroll-behavior:contain;outline:none;white-space:pre-wrap;overflow-wrap:anywhere;padding:20px;font:16px/1.5 Consolas,'Cascadia Mono','Liberation Mono','DejaVu Sans Mono','Courier New',monospace;font-variant-ligatures:none;font-kerning:none;letter-spacing:0;color:var(--phosphor);caret-color:#a2ffc0;cursor:text;tab-size:4;scrollbar-color:#3b5e47 var(--screen)}
.terminal span{font-family:inherit;font-weight:400;font-variant-ligatures:none}
.terminal:focus{box-shadow:inset 0 0 0 1px #61aa7d}
.terminal:empty:before{content:attr(data-placeholder);color:#799e83;pointer-events:none;text-shadow:none}
.terminal::selection,.terminal *::selection{background:#365c42;color:#e9ffed}
.terminal .tx{color:var(--amber)}
.terminal .control{font-size:12px;display:inline-block;line-height:1.45;margin:0 2px;padding:0 3px;vertical-align:1px;border:1px solid #365d42;border-radius:2px;color:#81b99a;user-select:text;text-shadow:none}
.terminal .tx.control{color:var(--amber);border-color:#745b37}
.screen-footer{flex:0 0 auto;display:flex;align-items:center;flex-wrap:wrap;gap:6px 14px;background:#102018;border-top:1px solid #294635;color:#99b8a4;padding:7px 14px;font-size:12px}
.screen-footer.active #keyboard-state{color:#8cecaa}
#trim-note{margin-left:auto}
#trim-note.trimmed{color:var(--amber)}
.counters{display:flex;gap:14px;font-size:12px;font-variant-numeric:tabular-nums;margin-left:auto;white-space:nowrap}
.counters>span:first-child{color:var(--phosphor)}
.counters>span:nth-child(2){color:var(--amber)}
.counters b{font-family:'Lucida Console',Consolas,monospace;font-size:12px;font-weight:400}
/* One sidebar for connection, line controls and display preferences. */
.controls-panel{position:static;margin:0;padding:0;width:100%;height:100%;min-width:0;min-height:0;max-width:none;max-height:100%;align-self:stretch;color:var(--ink);background:#f8fafb;border:1px solid #cbd6dd;border-radius:6px;overflow:hidden}
.controls-panel[open]{display:flex;flex-direction:column}
.controls-heading{display:flex;align-items:center;justify-content:space-between;flex:0 0 auto;padding:10px 12px;border-bottom:1px solid var(--line);background:#fff}
.controls-heading h2{margin:0;font-size:16px;font-weight:600}
#close-settings{display:none}
.controls-body{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin}
.control-section{padding:0;border-bottom:1px solid var(--line)}
.control-section>summary{display:flex;align-items:center;gap:8px;min-height:38px;padding:9px 12px;cursor:pointer;list-style:none;user-select:none;background:#f1f5f7}
.control-section>summary::-webkit-details-marker{display:none}
.control-section>summary:before{content:'';width:6px;height:6px;flex:0 0 6px;border-right:1.5px solid #607686;border-bottom:1.5px solid #607686;transform:rotate(-45deg);margin-right:3px}
.control-section[open]>summary:before{transform:rotate(45deg);margin-top:-3px}
.control-section>summary:hover{background:#e6eef2}
.control-section>summary:focus-visible{outline-offset:-3px}
.control-section h3{margin:0;font-size:13px;font-weight:600;color:var(--ink);white-space:nowrap}
.section-peek{margin-left:auto;min-width:0;font-size:11px;color:var(--muted);text-overflow:ellipsis;overflow:hidden;white-space:nowrap;font-variant-numeric:tabular-nums}
.section-peek.is-active{color:var(--green)}
.section-peek.is-warning{color:#a33e26}
.section-content{padding:10px 12px 12px}
.section-content select,.section-content input[type=number],.section-content button{min-height:30px;font-size:13px}
.section-content select{padding:4px 20px 4px 7px}
.connection{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:8px;align-items:end}
.connection>div{min-width:0;grid-column:span 2}
.connection label{display:block;font-size:12px;margin:0 0 3px}
.connection .port-control,.connection>button{grid-column:1/-1}
.connection .baud-control,.connection .flow-control{grid-column:span 3}
.port-row{display:flex;gap:6px}
.port-row select{min-width:0;flex:1}
.port-row button{padding:4px 9px}
.primary{background:var(--green);border-color:var(--green);color:#fff}
.primary:hover:not(:disabled){background:#0d5f50;border-color:#0d5f50}
.primary.disconnect{background:#a74139;border-color:#a74139}
.modem-lines{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;min-width:0}
.output-lines{display:flex;gap:6px}
.output-lines label{display:flex;align-items:center;gap:6px;min-height:28px;padding:4px 6px;border:1px solid #456350;border-radius:4px;background:transparent;color:#d0e6d8;font-size:12px;font-weight:600;cursor:pointer}
.output-lines input{width:15px;height:15px;margin:0;accent-color:#74e49e;cursor:pointer}
.output-lines label:has(input:checked){background:#244e33;border-color:#64af7b}
.output-lines label:has(input:disabled){cursor:not-allowed}
.output-state{color:#a6c4b1;font-size:11px;font-weight:400}
.output-state:empty{display:none}
.input-lines{display:flex;gap:6px}
.signal{display:flex;justify-content:center;gap:4px;align-items:center;min-height:28px;padding:4px 6px;border:1px solid #34553f;border-radius:4px;font-size:11px;background:#10251a;color:#c1dac9}
.signal b{font-weight:600}
.signal i{flex:0 0 6px;width:6px;height:6px;border-radius:50%;border:1px dashed #91a795;background:transparent}
.signal[data-state=off] i{border:1px solid #678270;background:#3e5546}
.signal[data-state=on]{border-color:#62a379;background:#1e432b}
.signal[data-state=on] i{border:1px solid #94f7b3;background:#74e49e;box-shadow:0 0 4px #74e49e66}
.signal-value{font:11px Consolas,monospace;color:inherit}
@container(max-width:760px){.toolbar-actions{order:2}.modem-lines{order:3;flex-basis:100%;padding-top:7px;border-top:1px solid #294635}.toolbar>.status{flex:1}}
.inline-option{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:12px;margin-bottom:8px}
.inline-option select{width:166px}
.view-controls{display:grid;grid-template-columns:1fr 1fr;gap:4px 8px}
.check{display:flex;align-items:center;gap:7px;min-height:24px;font-size:13px;cursor:pointer}
.check input{flex:0 0 15px;accent-color:var(--green);width:15px;height:15px;margin:0}
.keyboard-options{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:8px}
.view-label{display:flex;flex-direction:column;gap:3px;font-size:12px}
.view-label select{width:100%}
.log-toggle{margin-bottom:8px}
.log-actions{display:flex;gap:8px}
.log-actions button{flex:1;font-size:13px;padding:6px 8px}
#log-status{margin:9px 0 0;font-size:12px;line-height:1.4;color:var(--muted);overflow-wrap:anywhere}
#log-status.log-error{color:#a33e26}
.log-start-info{margin:8px 0 0;font-size:12px;line-height:1.5;color:var(--muted)}
.log-start-info time{color:var(--ink);font-variant-numeric:tabular-nums}
#log-start-count{display:block}
.inline-confirm{margin-top:10px;padding:10px;border:1px solid #e0c4b9;border-radius:4px;background:#fff7f2}
.inline-confirm p{font-size:12px;line-height:1.5;margin:0 0 8px}
.inline-confirm button.danger{color:#9e332c;border-color:#cd9d94}
.preset-list{list-style:none;padding:0;margin:0;display:grid;gap:6px}
.preset-item{display:flex;align-items:center;gap:4px;min-width:0}
.preset-item input,.preset-form input{min-width:0;width:0;flex:1;min-height:30px;border:1px solid #bacbd6;border-radius:4px;padding:5px 7px;color:var(--ink);background:#fff;font:13px/1.4 Consolas,'Courier New',monospace}
.preset-item input[aria-invalid="true"]{border-color:#b45338}
.preset-item button,.preset-form button{flex:none;padding:4px 7px}
.preset-item .preset-remove{width:30px;padding:0;border-color:transparent;background:transparent;color:var(--muted);font-size:20px;line-height:1}
.preset-item .preset-remove:hover{color:#9e332c;background:#fff0eb;border-color:#e0c4b9}
.preset-form{display:flex;align-items:center;gap:4px;margin-top:8px}
.preset-list:empty + .preset-form{margin-top:0}
.preset-message{font-size:12px;color:#a33e26;line-height:1.4;margin:8px 0 0}
#log-indicator{font-size:12px;color:var(--amber);white-space:nowrap}
#modules{border-top:1px solid var(--line);padding:14px 16px;display:grid;gap:16px}
#modules h2{font-size:14px;margin:0 0 8px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.help{width:min(780px,calc(100vw - 32px));max-height:calc(100dvh - 40px);padding:0;border:1px solid #b9cbd6;border-radius:10px;background:#fff;color:var(--ink);box-shadow:0 22px 90px #081b3359;overflow:hidden}
.help[open]{display:flex;flex-direction:column}
.help::backdrop{background:#10273980;backdrop-filter:blur(3px)}
.help-heading{display:flex;flex:0 0 auto;justify-content:space-between;align-items:center;gap:20px;padding:18px 24px;border-bottom:1px solid var(--line)}
.eyebrow{color:var(--muted);font-size:10px;letter-spacing:1.4px}
#help-title{margin:5px 0 0;font-size:22px}
.help-body{min-height:0;overflow:auto;overscroll-behavior:contain;padding:20px 24px;font-size:14px;line-height:1.65}
.help-content{display:grid;gap:20px}
.help-content h2{font-size:16px;margin:0 0 8px}
.help p{margin:7px 0;color:var(--muted)}
.help code{color:var(--ink)}
.help .privacy{border-top:1px solid var(--line);margin-top:20px;padding-top:16px}
.help a{color:#146b91}
.help-contact{font-size:12px}

@media(min-width:1600px){main{grid-template-columns:minmax(0,1fr) 360px}.terminal{padding:24px}}
@media(max-width:1100px){#trim-note:not(.trimmed){display:none}}

/* Narrow windows retain a full-height terminal; settings open on the right. */
@media(max-width:839px){
  main{grid-template-columns:minmax(0,1fr);padding:8px;gap:0}
  #settings-toggle{display:block;margin-left:auto}
  .free{display:none}
  .controls-panel:not(:modal){display:none}
  .controls-panel:modal{position:fixed;inset:8px 8px 8px auto;width:min(344px,calc(100vw - 16px));height:calc(100dvh - 16px);max-height:calc(100dvh - 16px);margin:0;box-shadow:0 12px 60px #112a3b45}
  .controls-panel::backdrop{background:#0a192b66}
  #close-settings{display:block}
  .control-section>summary{min-height:42px}
  .header{padding:8px 12px;gap:12px}
  .brand img{width:100px}
  h1{font-size:20px}
  .terminal{padding:16px}
}
@media(max-width:480px){
  .header{gap:8px;padding:8px 10px}
  .brand img{width:84px}
  .divider{display:none}
  h1{font-size:18px}
  .header button{padding:6px 9px;font-size:13px}
  .terminal{padding:12px;font-size:15px}
  .screen-footer{padding:7px 10px;font-size:12px}
  #keyboard-state{flex-basis:100%}
  .counters{margin-left:0}
}