/* MorseTrainer - "radio desk at night" */

@font-face { font-family: 'Inter'; font-style: normal; font-weight: 300 800; font-display: swap; src: url(/fonts/inter.woff2) format('woff2'); }
@font-face { font-family: 'JetBrains Mono'; font-style: normal; font-weight: 400 700; font-display: swap; src: url(/fonts/jetbrains-mono.woff2) format('woff2'); }
@font-face { font-family: 'Fraunces'; font-style: normal; font-weight: 400 700; font-display: swap; src: url(/fonts/fraunces.woff2) format('woff2'); }

:root {
  --font: 'Inter', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --display: 'Fraunces', Georgia, serif;
  --mono: 'JetBrains Mono', ui-monospace, Menlo, Consolas, monospace;

  --bg: #120f0c;
  --bg2: #181410;
  --panel: #1e1913;
  --panel2: #262019;
  --line: #3a3127;
  --line2: #4d4234;
  --text: #f1e6d4;
  --muted: #a8977f;
  --faint: #6f6252;
  --amber: #ffb03b;
  --amber2: #ffcf7a;
  --amber-glow: rgba(255, 176, 59, .35);
  --teal: #5fd0b5;
  --teal-glow: rgba(95, 208, 181, .3);
  --red: #ff6a55;
  --red-glow: rgba(255, 106, 85, .55);
  --green: #8fdc6a;
  --ok-bg: rgba(143, 220, 106, .14);
  --bad-bg: rgba(255, 106, 85, .16);
  --shadow: 0 10px 30px rgba(0, 0, 0, .35);
  --radius: 14px;
  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg: #f4ede0;
  --bg2: #ede4d3;
  --panel: #fffaf1;
  --panel2: #f6eee0;
  --line: #e0d3bd;
  --line2: #cdbb9e;
  --text: #2a2118;
  --muted: #74644f;
  --faint: #a39177;
  --amber: #c96a00;
  --amber2: #a35200;
  --amber-glow: rgba(201, 106, 0, .18);
  --teal: #11806a;
  --teal-glow: rgba(17, 128, 106, .15);
  --red: #d63b25;
  --red-glow: rgba(214, 59, 37, .35);
  --green: #3f8f1f;
  --ok-bg: rgba(63, 143, 31, .12);
  --bad-bg: rgba(214, 59, 37, .12);
  --shadow: 0 8px 24px rgba(80, 55, 20, .12);
  color-scheme: light;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background:
    radial-gradient(1200px 600px at 85% -10%, var(--amber-glow), transparent 60%),
    radial-gradient(900px 500px at -10% 110%, var(--teal-glow), transparent 60%),
    var(--bg);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--amber); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { font-family: var(--display); font-weight: 600; letter-spacing: -.01em; line-height: 1.15; margin: 0 0 .5em; }
h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
h2 { font-size: 1.45rem; }
h3 { font-size: 1.1rem; }
p { margin: 0 0 .8em; }
code, kbd, .mono { font-family: var(--mono); }
kbd {
  display: inline-block; padding: 1px 7px; border: 1px solid var(--line2); border-bottom-width: 2px;
  border-radius: 6px; background: var(--panel2); font-size: .82em; color: var(--text);
}
::selection { background: var(--amber); color: #1a1208; }

/* ---------------------------------------------------------------- layout */

.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 18px;
  padding: 10px 22px;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-family: var(--display); font-size: 1.25rem; font-weight: 600; white-space: nowrap; }
.brand:hover { text-decoration: none; }
.brand .logo { width: 30px; height: 30px; }
.brand small { display: block; font-family: var(--mono); font-size: .58rem; color: var(--amber); letter-spacing: .18em; margin-top: -3px; }
.nav { display: flex; gap: 2px; flex: 1; flex-wrap: wrap; }
.nav a {
  color: var(--muted); padding: 6px 11px; border-radius: 9px; font-size: .92rem; font-weight: 500;
}
.nav a:hover { color: var(--text); background: var(--panel2); text-decoration: none; }
.nav a.active { color: var(--amber); background: color-mix(in srgb, var(--amber) 12%, transparent); }
.nav-toggle { display: none; }
.userbox { display: flex; align-items: center; gap: 8px; margin-left: auto; }

main { max-width: 1180px; margin: 0 auto; padding: 28px 22px 120px; }

.statusbar {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 15;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 7px 20px; font-size: .8rem; color: var(--muted);
  background: color-mix(in srgb, var(--bg2) 92%, transparent); backdrop-filter: blur(8px);
  border-top: 1px solid var(--line);
}
.statusbar .sep { color: var(--faint); }
.statusbar .src { font-family: var(--mono); }
.statusbar .grow { flex: 1; }

/* ---------------------------------------------------------------- components */

.panel {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; box-shadow: var(--shadow);
}
.panel + .panel { margin-top: 18px; }
.grid > .panel + .panel, .grid > div > .panel:first-child { margin-top: 0; }
.panel.tight { padding: 14px; }
.panel-title { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.panel-title h2, .panel-title h3 { margin: 0; }
.grid { display: grid; gap: 18px; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid.side { grid-template-columns: minmax(0, 1.6fr) minmax(280px, 1fr); }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row.end { justify-content: flex-end; }
.row.between { justify-content: space-between; }
.stack > * + * { margin-top: 12px; }
.muted { color: var(--muted); }
.faint { color: var(--faint); }
.small { font-size: .85rem; }
.center { text-align: center; }
.hidden { display: none !important; }
.spacer { flex: 1; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: inherit; font-weight: 600; font-size: .92rem;
  padding: 9px 16px; border-radius: 10px; cursor: pointer;
  border: 1px solid var(--line2); background: var(--panel2); color: var(--text);
  transition: transform .06s, background .15s, border-color .15s, box-shadow .15s;
  white-space: nowrap;
}
.btn:hover { border-color: var(--amber); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.primary {
  background: linear-gradient(180deg, var(--amber2), var(--amber)); color: #23160a; border-color: transparent;
  box-shadow: 0 4px 16px var(--amber-glow);
}
:root[data-theme="light"] .btn.primary { color: #fff8ee; }
.btn.primary:hover { filter: brightness(1.06); }
.btn.teal { background: color-mix(in srgb, var(--teal) 18%, var(--panel2)); border-color: color-mix(in srgb, var(--teal) 50%, transparent); }
.btn.danger { color: var(--red); border-color: color-mix(in srgb, var(--red) 45%, transparent); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--muted); }
.btn.ghost:hover { color: var(--text); background: var(--panel2); }
.btn.small { padding: 5px 10px; font-size: .82rem; border-radius: 8px; }
.btn.big { padding: 13px 24px; font-size: 1.05rem; border-radius: 12px; }
.btn .ico { width: 18px; height: 18px; }

label { display: block; font-size: .82rem; font-weight: 600; color: var(--muted); margin-bottom: 5px; letter-spacing: .01em; }
input[type=text], input[type=password], input[type=email], input[type=number], input[type=search], select, textarea {
  width: 100%; font: inherit; color: var(--text); background: var(--bg2);
  border: 1px solid var(--line2); border-radius: 10px; padding: 9px 12px; outline: none;
  transition: border-color .15s, box-shadow .15s;
}
textarea { resize: vertical; min-height: 90px; }
input:focus, select:focus, textarea:focus { border-color: var(--amber); box-shadow: 0 0 0 3px var(--amber-glow); }
input.mono, textarea.mono { font-family: var(--mono); letter-spacing: .04em; text-transform: uppercase; }
::placeholder { color: var(--faint); opacity: .7; text-transform: none; letter-spacing: 0; font-family: var(--font); }
input[type=range] { width: 100%; accent-color: var(--amber); }
input[type=checkbox] { accent-color: var(--amber); width: 16px; height: 16px; vertical-align: -3px; }
.field { margin-bottom: 14px; }
.field .hint { font-size: .78rem; color: var(--faint); margin-top: 4px; }
.check { display: flex; align-items: center; gap: 8px; font-size: .9rem; color: var(--text); font-weight: 500; cursor: pointer; margin: 0; }
.range-row { display: flex; align-items: center; gap: 12px; }
.range-row output { font-family: var(--mono); min-width: 64px; text-align: right; color: var(--amber); }

.seg { display: inline-flex; background: var(--bg2); border: 1px solid var(--line2); border-radius: 11px; padding: 3px; gap: 2px; flex-wrap: wrap; }
.seg button {
  font: inherit; font-size: .86rem; font-weight: 600; border: 0; background: transparent; color: var(--muted);
  padding: 6px 12px; border-radius: 8px; cursor: pointer;
}
.seg button:hover { color: var(--text); }
.seg button.on { background: var(--panel2); color: var(--amber); box-shadow: inset 0 0 0 1px var(--line2); }

.tag {
  display: inline-flex; align-items: center; gap: 5px; font-size: .74rem; font-weight: 600;
  padding: 2px 8px; border-radius: 99px; border: 1px solid var(--line2); color: var(--muted);
}
.tag.amber { color: var(--amber); border-color: color-mix(in srgb, var(--amber) 40%, transparent); }
.tag.teal { color: var(--teal); border-color: color-mix(in srgb, var(--teal) 40%, transparent); }
.tag.red { color: var(--red); border-color: color-mix(in srgb, var(--red) 40%, transparent); }

table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th { text-align: left; font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; color: var(--faint); font-weight: 600; padding: 8px 10px; border-bottom: 1px solid var(--line); }
td { padding: 8px 10px; border-bottom: 1px solid color-mix(in srgb, var(--line) 60%, transparent); }
tr:hover td { background: color-mix(in srgb, var(--panel2) 50%, transparent); }
.table-wrap { overflow-x: auto; }

.toast-host { position: fixed; top: 72px; right: 20px; z-index: 100; display: flex; flex-direction: column; gap: 8px; }
.toast {
  background: var(--panel2); border: 1px solid var(--line2); border-left: 3px solid var(--amber);
  padding: 10px 14px; border-radius: 10px; box-shadow: var(--shadow); max-width: 360px; font-size: .9rem;
  animation: slidein .2s ease-out;
}
.toast.err { border-left-color: var(--red); }
.toast.ok { border-left-color: var(--green); }
@keyframes slidein { from { transform: translateX(20px); opacity: 0; } }

.modal-back { position: fixed; inset: 0; background: rgba(0,0,0,.55); z-index: 90; display: grid; place-items: center; padding: 16px; animation: fade .15s; }
.modal { width: min(640px, 100%); max-height: 90vh; overflow: auto; }
@keyframes fade { from { opacity: 0; } }

/* ---------------------------------------------------------------- radio parts */

.vfo {
  font-family: var(--mono); font-weight: 700; color: var(--amber);
  text-shadow: 0 0 18px var(--amber-glow), 0 0 2px var(--amber);
  font-variant-numeric: tabular-nums; letter-spacing: .02em;
}
.lcd {
  background: linear-gradient(180deg, #0b0907, #15110c); border: 1px solid #3b2f22; border-radius: 12px;
  padding: 14px 18px; box-shadow: inset 0 2px 12px rgba(0,0,0,.6);
}
:root[data-theme="light"] .lcd { background: linear-gradient(180deg, #2a2118, #3a2e22); border-color: #2a2118; }
:root[data-theme="light"] .lcd .vfo { color: #ffbf5a; }
.lcd .lbl { font-family: var(--mono); font-size: .68rem; letter-spacing: .16em; color: #8a7559; text-transform: uppercase; }

.led {
  width: 14px; height: 14px; border-radius: 50%; display: inline-block; flex: none;
  background: #3a1d17; box-shadow: inset 0 1px 2px rgba(0,0,0,.6);
  transition: background .03s, box-shadow .03s;
}
.led.on { background: var(--red); box-shadow: 0 0 10px var(--red-glow), 0 0 22px var(--red-glow); }
.led.rx { background: #183a31; }
.led.rx.on { background: var(--teal); box-shadow: 0 0 10px var(--teal-glow), 0 0 22px var(--teal-glow); }

.tape {
  font-family: var(--mono); font-size: 1.35rem; letter-spacing: .08em; line-height: 1.6;
  min-height: 3.4em; padding: 12px 16px; border-radius: 12px; background: var(--bg2); border: 1px solid var(--line);
  white-space: pre-wrap; word-break: break-word; color: var(--text);
}
.tape .cursor { display: inline-block; width: .55em; height: 1.1em; background: var(--amber); vertical-align: -3px; animation: blink 1s steps(1) infinite; margin-left: 2px; }
.tape .pending { color: var(--amber); opacity: .75; }
.tape .bad { color: var(--red); }
@keyframes blink { 50% { opacity: 0; } }

canvas.timeline { width: 100%; height: 74px; display: block; border-radius: 10px; background: var(--bg2); border: 1px solid var(--line); }

.keypad { display: flex; gap: 12px; user-select: none; -webkit-user-select: none; touch-action: none; }
.keypad button {
  flex: 1; min-height: 92px; font: inherit; font-family: var(--mono); font-size: 1rem; font-weight: 700;
  color: var(--muted); border-radius: 16px; cursor: pointer;
  border: 1px solid var(--line2); background: linear-gradient(180deg, var(--panel2), var(--bg2));
  box-shadow: 0 6px 0 var(--line), var(--shadow); transition: transform .04s, box-shadow .04s;
}
.keypad button.down { transform: translateY(5px); box-shadow: 0 1px 0 var(--line); color: var(--amber); border-color: var(--amber); }
.keypad button .k { display: block; font-size: 1.6rem; color: var(--text); }

.pattern { font-family: var(--mono); letter-spacing: .12em; color: var(--amber); }
.pattern i { display: inline-block; height: 8px; border-radius: 4px; background: var(--amber); margin-right: 5px; vertical-align: middle; box-shadow: 0 0 8px var(--amber-glow); }
.pattern i.dit { width: 8px; }
.pattern i.dah { width: 26px; }

.bigchar { font-family: var(--mono); font-size: clamp(4rem, 12vw, 7.5rem); font-weight: 700; line-height: 1; color: var(--text); text-shadow: 0 0 40px var(--amber-glow); }

.diff { font-family: var(--mono); font-size: 1.1rem; letter-spacing: .06em; }
.diff .ok { color: var(--green); }
.diff .sub { color: var(--red); background: var(--bad-bg); border-radius: 3px; }
.diff .del { color: var(--red); text-decoration: line-through; opacity: .8; }
.diff .ins { color: var(--faint); background: var(--bad-bg); border-radius: 3px; }

.item-list { display: flex; flex-direction: column; gap: 6px; }
.item-row { display: grid; grid-template-columns: 34px 1fr auto; gap: 10px; align-items: center; padding: 7px 10px; border-radius: 9px; background: var(--bg2); border: 1px solid var(--line); }
.item-row.good { border-color: color-mix(in srgb, var(--green) 40%, transparent); background: var(--ok-bg); }
.item-row.badrow { border-color: color-mix(in srgb, var(--red) 35%, transparent); }
.item-row .n { font-family: var(--mono); color: var(--faint); font-size: .8rem; }

.progress { height: 8px; border-radius: 99px; background: var(--bg2); border: 1px solid var(--line); overflow: hidden; }
.progress > div { height: 100%; background: linear-gradient(90deg, var(--amber), var(--amber2)); border-radius: 99px; transition: width .3s; }
.progress.teal > div { background: linear-gradient(90deg, var(--teal), #9be8d6); }

.stat { padding: 16px; border-radius: 12px; background: var(--bg2); border: 1px solid var(--line); }
.stat .v { font-family: var(--mono); font-size: 1.8rem; font-weight: 700; color: var(--amber); line-height: 1.1; }
.stat .l { font-size: .78rem; color: var(--muted); text-transform: uppercase; letter-spacing: .07em; margin-top: 4px; }

/* hero */
.hero { position: relative; overflow: hidden; padding: 56px 40px; border-radius: 22px; border: 1px solid var(--line); background: linear-gradient(135deg, var(--panel), var(--bg2)); box-shadow: var(--shadow); }
.hero canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .55; pointer-events: none; -webkit-mask-image: linear-gradient(100deg, transparent 30%, #000 85%); mask-image: linear-gradient(100deg, transparent 30%, #000 85%); }
.hero > *:not(canvas) { position: relative; }
.hero h1 { font-size: clamp(2.2rem, 6vw, 3.8rem); max-width: 14ch; }
.hero h1 em { font-style: normal; color: var(--amber); text-shadow: 0 0 30px var(--amber-glow); }
.hero p.lead { font-size: 1.15rem; color: var(--muted); max-width: 52ch; }
.morse-line { font-family: var(--mono); color: var(--amber); letter-spacing: .3em; opacity: .7; font-size: .9rem; }

.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 14px; }
.tile {
  display: block; color: var(--text); padding: 18px; border-radius: 14px; background: var(--panel); border: 1px solid var(--line);
  transition: border-color .15s, transform .15s, box-shadow .15s; position: relative; overflow: hidden;
}
.tile:hover { text-decoration: none; border-color: var(--amber); transform: translateY(-2px); box-shadow: 0 10px 30px var(--amber-glow); }
.tile h3 { margin-bottom: 4px; font-size: 1.15rem; }
.tile p { color: var(--muted); font-size: .88rem; margin: 0; }
.tile .glyph { font-family: var(--mono); color: var(--amber); font-size: .85rem; letter-spacing: .2em; margin-bottom: 10px; display: block; }

/* chat / QSO */
.qso-log { display: flex; flex-direction: column; gap: 10px; max-height: 460px; min-height: 260px; overflow-y: auto; padding: 4px; }
.bubble { max-width: 88%; padding: 10px 14px; border-radius: 14px; font-family: var(--mono); font-size: .95rem; letter-spacing: .03em; line-height: 1.55; word-break: break-word; }
.bubble .who { display: block; font-family: var(--font); font-size: .72rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; margin-bottom: 3px; }
.bubble.them { background: color-mix(in srgb, var(--teal) 12%, var(--bg2)); border: 1px solid color-mix(in srgb, var(--teal) 35%, transparent); align-self: flex-start; }
.bubble.them .who { color: var(--teal); }
.bubble.me { background: color-mix(in srgb, var(--amber) 12%, var(--bg2)); border: 1px solid color-mix(in srgb, var(--amber) 35%, transparent); align-self: flex-end; }
.bubble.me .who { color: var(--amber); }
.bubble.hidden-text .txt { filter: blur(6px); user-select: none; cursor: pointer; }
.bubble.playing { box-shadow: 0 0 0 2px var(--teal-glow); }
.bubble.sys { align-self: center; font-family: var(--font); font-size: .82rem; color: var(--muted); background: transparent; padding: 2px 8px; }
.coach { border-left: 3px solid var(--teal); padding: 8px 12px; background: color-mix(in srgb, var(--teal) 8%, transparent); border-radius: 0 10px 10px 0; font-size: .9rem; }
.coach .sugg { font-family: var(--mono); color: var(--teal); display: block; margin-top: 4px; cursor: pointer; }

.heat { display: grid; grid-template-columns: repeat(auto-fill, minmax(52px, 1fr)); gap: 6px; }
.heat .c { border-radius: 9px; padding: 6px 4px; text-align: center; border: 1px solid var(--line); background: var(--bg2); cursor: pointer; }
.heat .c b { display: block; font-family: var(--mono); font-size: 1.15rem; }
.heat .c span { font-size: .68rem; color: var(--muted); }

.cal { display: grid; grid-auto-flow: column; grid-template-rows: repeat(7, 13px); gap: 3px; overflow-x: auto; padding-bottom: 4px; }
.cal div { width: 13px; height: 13px; border-radius: 3px; background: var(--bg2); border: 1px solid var(--line); }

.chart svg { width: 100%; height: 180px; display: block; }

.kbd-bind { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.kbd-bind .tag { font-family: var(--mono); }

.chartable { display: grid; grid-template-columns: repeat(auto-fill, minmax(118px, 1fr)); gap: 8px; }
.chartable button {
  display: flex; align-items: center; gap: 10px; text-align: left; font: inherit; color: var(--text); cursor: pointer;
  padding: 8px 10px; border-radius: 10px; background: var(--bg2); border: 1px solid var(--line);
}
.chartable button:hover { border-color: var(--amber); }
.chartable button.playing { border-color: var(--amber); box-shadow: 0 0 0 3px var(--amber-glow); }
.chartable b { font-family: var(--mono); font-size: 1.2rem; min-width: 1.6em; }
.chartable .pattern i { height: 6px; margin-right: 3px; }
.chartable .pattern i.dit { width: 6px; }
.chartable .pattern i.dah { width: 17px; }

.auth-wrap { max-width: 460px; margin: 30px auto; }
.divider { display: flex; align-items: center; gap: 12px; color: var(--faint); font-size: .8rem; margin: 16px 0; }
.divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--line); }

.countdown { font-family: var(--mono); font-size: 4rem; color: var(--amber); text-align: center; }

@media (max-width: 920px) {
  .grid.two, .grid.three, .grid.side { grid-template-columns: 1fr; }
  .grid.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .nav-toggle { display: inline-flex; }
  .nav { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; padding: 10px; background: var(--bg); border-bottom: 1px solid var(--line); }
  .nav.open { display: flex; }
  .topbar { padding: 10px 16px; }
  main { padding: 20px 16px 110px; }
  .hero { padding: 36px 22px; }
}
@media (max-width: 520px) {
  .grid.four { grid-template-columns: 1fr 1fr; }
  .statusbar .hide-sm { display: none; }
  .statusbar { gap: 10px; font-size: .72rem; padding: 6px 12px; }
  .userbox .hide-sm, .brand small { display: none; }
  .topbar { gap: 8px; }
  .brand { font-size: 1.1rem; }
  .hero h1 { font-size: 2.1rem; }
  .keypad button { min-height: 76px; }
}
html, body { overflow-x: hidden; }