:root {
  color-scheme: dark;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --bg: #0b1220;
  --surface: #111c2e;
  --surface-raised: #16243a;
  --surface-soft: #0e192a;
  --surface-hover: #1c2c43;
  --text: #e7edf7;
  --text-strong: #f4f7fc;
  --muted: #9aa9bf;
  --subtle: #74859d;
  --line: #26364c;
  --line-soft: #1d2c40;
  --accent: #6da8ff;
  --accent-strong: #3f83ed;
  --accent-soft: #172f50;
  --green: #35c878;
  --warning-bg: #302719;
  --warning-line: #59452a;
  --warning-text: #e6c58b;
  --danger: #ff8888;
  --shadow: 0 8px 28px #0000001c;
  color: var(--text);
  background: var(--bg);
}
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-raised: #ffffff;
  --surface-soft: #f7f9fc;
  --surface-hover: #edf2f8;
  --text: #263449;
  --text-strong: #15243a;
  --muted: #69788d;
  --subtle: #8794a6;
  --line: #dce4ee;
  --line-soft: #e8edf4;
  --accent: #315fa8;
  --accent-strong: #244f94;
  --accent-soft: #e8f0fc;
  --green: #168d4b;
  --warning-bg: #fff8e9;
  --warning-line: #efdfbc;
  --warning-text: #7b5a21;
  --danger: #b42318;
  --shadow: 0 3px 14px #1c35500b;
}
* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; background: var(--bg); color: var(--text); }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; color: inherit; }
button, input, textarea, select { accent-color: var(--accent); }
.app { min-height: 100vh; display: flex; flex-direction: column; }
.top { min-height: 58px; display: flex; align-items: center; gap: 15px; padding: 0 17px; background: var(--surface); border-bottom: 1px solid var(--line); }
.brand-area { display: flex; align-items: center; gap: 10px; min-width: 195px; }
.iconbtn { width: 32px; height: 32px; border: 0; border-radius: 8px; background: transparent; color: var(--muted); font-size: 18px; }
.iconbtn:hover, .tab-close:hover { background: var(--surface-hover); }
.brandmark { width: 27px; height: 27px; display: grid; place-items: center; border-radius: 8px; color: var(--green); font-size: 24px; line-height: 1; }
.brand { font-size: 13px; font-weight: 700; color: var(--text-strong); }
.tabs { display: flex; align-items: center; gap: 4px; flex: 1; min-width: 0; overflow: auto; scrollbar-width: none; }
.tab { height: 36px; display: flex; align-items: center; gap: 8px; padding: 0 12px; border: 1px solid transparent; border-radius: 8px; background: transparent; color: var(--muted); font-size: 12px; white-space: nowrap; }
.tab.active { background: var(--accent-soft); border-color: var(--line); color: var(--text-strong); font-weight: 600; }
.tab-close { display: inline-grid; place-items: center; width: 17px; height: 17px; margin-left: 3px; border-radius: 5px; font-size: 15px; line-height: 1; color: var(--muted); cursor: pointer; }
.tab-close:hover { color: var(--danger); }
.layout { display: flex; flex: 1; min-height: calc(100vh - 58px); }
.sidebar { width: 232px; flex: 0 0 232px; display: flex; flex-direction: column; padding: 18px 12px 12px; background: var(--surface); border-right: 1px solid var(--line); transition: width .18s; }
.collapsed .sidebar { width: 64px; flex-basis: 64px; padding-left: 10px; padding-right: 10px; }
.navtitle { padding: 8px 10px; color: var(--subtle); font-size: 9px; font-weight: 700; letter-spacing: 1.2px; }
.navbtn { display: flex; align-items: center; gap: 11px; width: 100%; height: 39px; padding: 0 10px; border: 0; border-radius: 8px; background: transparent; color: var(--muted); text-align: left; font-size: 12px; }
.navbtn:hover { background: var(--surface-hover); }
.navbtn.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.navicon { width: 18px; text-align: center; font-size: 16px; }
.collapsed .navbtn { justify-content: center; padding: 0; }
.collapsed .navbtn .label, .collapsed .navtitle { display: none; }
.theme-control { display: grid; gap: 7px; margin-top: auto; padding: 14px 7px 3px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.theme-control select { padding: 8px 9px; font-size: 12px; }
.collapsed .theme-control { padding: 10px 0 0; }
.collapsed .theme-control label { display: none; }
.collapsed .theme-control select { padding: 6px 2px; font-size: 10px; }
.main { display: flex; flex-direction: column; flex: 1; min-width: 0; }
.crumbbar { min-height: 49px; display: flex; align-items: center; justify-content: space-between; padding: 0 28px; border-bottom: 1px solid var(--line-soft); color: var(--subtle); font-size: 11px; }
.crumbbar strong { color: var(--text); font-weight: 600; }
.workspace-empty { margin: auto; padding: 48px 20px; text-align: center; color: var(--muted); }
.workspace-empty strong { display: block; margin-bottom: 8px; color: var(--text-strong); font-size: 18px; }
.workspace-empty p { font-size: 13px; line-height: 1.6; }
.content { flex: 1; width: 100%; max-width: 1200px; margin: 0 auto; padding: 42px clamp(20px,5vw,64px) 50px; }
.heading { margin-bottom: 25px; }
.eyebrow { margin: 0 0 10px; color: var(--accent); font-size: 10px; font-weight: 700; letter-spacing: 1.4px; }
h1, h2, h3, h4, p { color: inherit; }
h1 { margin: 0; color: var(--text-strong); font-size: 30px; letter-spacing: -1px; font-weight: 650; }
h2 { margin: 0 0 6px; font-size: 15px; letter-spacing: -.2px; }
.sub { margin: 10px 0 0; color: var(--muted); font-size: 13px; line-height: 1.7; }
.panel { padding: 22px; border: 1px solid var(--line); border-radius: 13px; background: var(--surface); box-shadow: var(--shadow); }
.antenna-card { min-width: 0; padding: 18px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface-soft); }
.qr-layout { display: grid; grid-template-columns: minmax(0,1.3fr) minmax(240px,.7fr); gap: 16px; }
.field-label { display: block; margin: 16px 0 7px; color: var(--muted); font-size: 11px; font-weight: 600; }
.field, textarea, select { width: 100%; border: 1px solid var(--line); border-radius: 8px; background: var(--surface-soft); padding: 11px 12px; outline: none; color: var(--text); font-size: 13px; }
.field::placeholder, textarea::placeholder { color: var(--subtle); }
.field:focus, textarea:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent); }
textarea { resize: vertical; min-height: 110px; line-height: 1.5; }
.row { display: flex; gap: 12px; }
.row > div { flex: 1; min-width: 0; }
.primary, .secondary { border-radius: 8px; padding: 10px 15px; font-size: 12px; font-weight: 600; }
.primary { border: 1px solid var(--accent-strong); background: var(--accent-strong); color: #fff; }
.primary:hover { filter: brightness(1.1); }
.secondary { border: 1px solid var(--line); background: var(--surface-raised); color: var(--text); padding: 9px 13px; }
.secondary:hover { background: var(--surface-hover); }
.qr-actions { display: flex; gap: 9px; flex-wrap: wrap; margin-top: 17px; }
.preview { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 300px; padding: 18px; border: 1px dashed var(--line); border-radius: 10px; background: var(--surface-soft); text-align: center; }
.qr-output { display: grid; place-items: center; min-width: 60px; min-height: 60px; padding: 12px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.qr-output img, .qr-output canvas { max-width: 100%; height: auto; }
.preview-note { margin: 14px 0 0; color: var(--muted); font-size: 11px; line-height: 1.6; }
.freq-tools { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }
.freq-tools input { flex: 1; min-width: 190px; }
.freq-tools select { width: auto; min-width: 160px; }
.tablewrap { overflow: auto; border: 1px solid var(--line); border-radius: 11px; background: var(--surface); }
table { width: 100%; border-collapse: collapse; font-size: 12px; }
th, td { padding: 12px 14px; border-bottom: 1px solid var(--line-soft); text-align: left; vertical-align: top; }
th { background: var(--surface-soft); color: var(--muted); font-size: 10px; letter-spacing: .3px; font-weight: 700; white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: var(--surface-soft); }
.freq { color: var(--accent); font-variant-numeric: tabular-nums; font-weight: 600; white-space: nowrap; }
.tag { display: inline-block; padding: 4px 7px; border-radius: 5px; background: var(--accent-soft); color: var(--accent); font-size: 10px; white-space: nowrap; }
.tag.warn { background: var(--warning-bg); color: var(--warning-text); }
.notice { margin-top: 15px; padding: 13px 15px; border: 1px solid var(--warning-line); border-radius: 9px; background: var(--warning-bg); color: var(--warning-text); font-size: 11px; line-height: 1.65; }
.sources { margin-top: 16px; color: var(--muted); font-size: 11px; }
.sources a { color: var(--accent); text-decoration: none; }
.sources a:hover { text-decoration: underline; }
.empty { padding: 25px; color: var(--muted); text-align: center; font-size: 12px; }
.hidden { display: none !important; }
.antenna-calculator { margin: 22px 0; }
.antenna-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; }
.antenna-card h3 { margin: 0 0 16px; color: var(--text-strong); font-size: 15px; }
.antenna-input-row { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 8px; margin-bottom: 14px; }
.antenna-input-row select { min-width: 78px; }
.antenna-card > select, .antenna-card > .primary { width: 100%; margin-bottom: 14px; }
.antenna-card .field { min-width: 0; }
.antenna-results { margin-top: 8px; overflow-wrap: anywhere; }
.antenna-results h4 { margin: 14px 0 8px; color: var(--text-strong); font-size: 13px; }
.antenna-results dl { margin: 0; }
.antenna-results dl > div { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--line); }
.antenna-results dt, .antenna-results dd span { color: var(--muted); }
.antenna-results dd { margin: 0; font-weight: 600; text-align: right; }
.antenna-results dd span { display: block; margin-top: 3px; font-size: 11px; font-weight: 400; }
.antenna-results > p, .antenna-disclaimer { color: var(--muted); font-size: 12px; line-height: 1.6; }
.antenna-disclaimer { margin: 18px 0 0; }
.antenna-error { color: var(--danger); font-size: 12px; }
@media (max-width: 760px) {
  .top { gap: 7px; padding: 0 9px; }
  .brand-area { min-width: auto; }
  .brand { display: inline; }
  .sidebar { width: 64px; flex-basis: 64px; padding-right: 10px; padding-left: 10px; }
  .sidebar .navbtn { justify-content: center; padding: 0; }
  .sidebar .navbtn .label, .sidebar .navtitle { display: none; }
  .theme-control { padding: 10px 0 0; }
  .theme-control label { display: none; }
  .theme-control select { padding: 6px 2px; font-size: 10px; }
  .content { padding: 28px 14px; }
  .qr-layout, .antenna-grid { grid-template-columns: 1fr; }
  .crumbbar { padding: 0 17px; }
  .heading h1 { font-size: 26px; }
  .panel { padding: 16px; }
  .freq-tools select { flex: 1; }
  .tab { padding: 0 8px; }
}

.percentage-block{border-top:1px solid var(--border);padding-top:14px;margin-top:14px}
.percentage-block h3{font-size:14px;margin:0 0 8px}
.result{padding:12px;border-radius:8px;background:var(--panel);font-weight:700;margin-top:12px}
#image-quality{accent-color:var(--accent)}
#image-preview,#exif-preview{min-height:80px;display:flex;align-items:center;justify-content:center;overflow:hidden}
#image-preview img,#exif-preview img img{object-fit:contain}

/* e-Transfer */
.transfer-progress{height:8px;background:var(--line);border-radius:999px;overflow:hidden;margin-top:14px}.transfer-progress>div{height:100%;width:0;background:var(--green);transition:width .12s}.transfer-received{display:grid;gap:10px;margin-top:12px}.transfer-file{padding:12px;border:1px solid var(--line);border-radius:9px;background:var(--surface-soft);overflow-wrap:anywhere}.transfer-file .primary{color:#fff;padding:9px 12px}#transfer-qr canvas,#transfer-qr img{max-width:100%;height:auto}