/* Shared visual language of mod.gpxkiller.com; all styles served locally. */
:root{color-scheme:dark;--bg:#101b24;--card:#17242e;--edge:#34424c;--text:#f7e7c8;--muted:#b6c4ce;--accent:#d8bb88;--warning:#efc184}
*{box-sizing:border-box}[hidden]{display:none!important}
.windows-download{margin:24px 0;padding:24px;background:var(--card);border:1px solid var(--edge);border-radius:16px}
.windows-download .button{display:inline-block;text-decoration:none;margin:4px 8px 4px 0;padding:13px 20px;border-radius:10px;font:650 14px/1.45 system-ui,sans-serif;max-width:100%;white-space:normal}
.windows-download .primary.secondary{background:var(--accent);border-color:var(--accent);color:var(--bg)}
#updateButton:disabled{cursor:default}
html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif}
main{max-width:1040px;margin:40px auto;padding:24px}
a{color:var(--accent);text-underline-offset:4px}a:hover{color:var(--text)}
.page-top{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;margin-bottom:32px}
nav{display:flex;align-items:center;flex-wrap:wrap;gap:14px}nav .links{display:flex;align-items:center;gap:16px;flex-wrap:wrap}nav a{text-decoration:none}nav a[aria-current]{color:var(--text)}nav .links>span{color:var(--edge)}
.tag{display:inline-block;border:1px solid var(--edge);padding:3px 10px;border-radius:20px;font-size:12px;color:var(--muted)}
.local-badge{white-space:nowrap}.hero-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:22px}
.intro{padding:32px 0 36px}.eyebrow{color:var(--accent);font-size:13px;text-transform:uppercase;letter-spacing:.12em;margin:0 0 12px}
h1{font-size:clamp(32px,6vw,58px);line-height:1.15;letter-spacing:-.025em;margin:14px 0 20px;font-weight:700}
h2{font-size:25px;line-height:1.3;margin:0 0 12px}h3{font-size:18px;line-height:1.4;margin:0 0 8px}
.lede{font-size:19px;color:var(--muted);max-width:730px;margin:0;line-height:1.65}
.workspace{border:1px solid var(--edge);border-radius:16px;background:var(--card);overflow:hidden;margin:8px 0 32px}
.step-marker,.route-title{display:flex;align-items:center;gap:14px;padding:22px 24px;border-bottom:1px solid var(--edge)}
.step-marker>span,.route-title>span,.how-grid article>span{display:grid;place-items:center;width:32px;height:32px;flex:0 0 32px;border:1px solid var(--edge);border-radius:8px;color:var(--accent);font-size:13px}
.step-marker div,.route-title div{display:flex;flex-direction:column;gap:2px}.step-marker b,.route-title b{font-size:16px;font-weight:650}.step-marker small,.route-title small{color:var(--muted);font-size:13px}
.configuration{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:18px;align-items:end;padding:24px}
.configuration label{display:grid;gap:8px;font-size:14px;color:var(--muted);min-width:0}
select{width:100%;min-width:0;background:var(--bg);color:var(--text);padding:12px;border:1px solid var(--edge);border-radius:8px;font:inherit}
.config-arrow{color:var(--accent);padding-bottom:12px}.file-step{border-top:1px solid var(--edge)}
.dropzone{margin:24px;border:1px dashed #667078;border-radius:12px;padding:32px 24px;text-align:center;background:var(--bg)}
.drop-icon{width:48px;height:48px;display:grid;place-items:center;margin:0 auto 16px;border:1px solid var(--edge);border-radius:10px;color:var(--accent);font-size:26px}
.dropzone h2{font-size:23px}.dropzone>p{color:var(--muted);max-width:660px;margin:0 auto;font-size:14px}.privacy{display:block;color:var(--muted);font-size:13px;margin:20px 0 0}
.actions,.result-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:24px 0 0}.actions{justify-content:center}
button,.download-link{display:inline-flex;align-items:center;justify-content:center;padding:13px 20px;border-radius:10px;font:650 14px/1.45 system-ui,sans-serif;text-decoration:none;cursor:pointer;max-width:100%;overflow-wrap:anywhere;white-space:normal;text-align:center}
.primary{border:1px solid var(--accent);background:var(--accent);color:var(--bg)}.primary:hover{background:#e7cda5;border-color:#e7cda5;color:var(--bg)}
.secondary{background:var(--card);border:1px solid var(--edge);color:var(--text)}.secondary:hover{border-color:var(--accent);color:var(--text)}button:disabled{opacity:.55;cursor:wait}
a:focus-visible,button:focus-visible,select:focus-visible{outline:3px solid var(--accent);outline-offset:4px}
.loading{margin:24px;padding:28px;border:1px solid var(--edge);border-radius:12px;color:var(--accent);text-align:center;position:relative;overflow:hidden}
.scanline{position:absolute;left:0;top:0;height:3px;width:35%;background:var(--accent);animation:scan 1.5s ease-in-out infinite alternate}@keyframes scan{to{left:65%}}
.result{padding:24px}.result-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;flex-wrap:wrap}.result-head h2{font-size:28px;overflow-wrap:anywhere}.confidence{border:1px solid var(--edge);border-radius:20px;padding:5px 10px;color:var(--muted);font-size:12px}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:22px 0}.stats article{padding:16px;border:1px solid var(--edge);border-radius:12px;background:var(--bg);min-width:0}.stats span{display:block;color:var(--muted);font-size:11px;letter-spacing:.04em;margin-bottom:8px}.stats strong{font-size:16px;overflow-wrap:anywhere}
.warning{border:1px solid #685b46;border-radius:10px;background:#252b2e;display:flex;align-items:flex-start;gap:12px;padding:16px;color:var(--warning);margin:20px 0}.warning>span{flex:0 0 24px;width:24px;height:24px;display:grid;place-items:center;border:1px solid #685b46;border-radius:6px;font-size:13px}.warning strong{font-size:14px}.warning p{font-size:14px;margin:4px 0 0;line-height:1.65}.workspace>#inputError{margin:24px}
.route-wrap{border:1px solid var(--edge);border-radius:12px;margin-top:24px;overflow:hidden}.route-title{padding:16px}.route{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:18px;min-width:0}.route-node{border:1px solid var(--edge);border-radius:8px;background:var(--bg);padding:8px 12px;font-size:13px;color:var(--text);max-width:100%;overflow-wrap:anywhere}.route p{font-size:14px;color:var(--muted);margin:0}
.limits{border-left:3px solid var(--accent);padding:0 0 0 18px;margin:24px 0;color:var(--muted)}.limits strong{color:var(--text);font-size:14px}.limits p{font-size:14px;margin:6px 0 0}.conversion{padding:0 0 8px}.conversion p{font-size:14px;color:var(--muted);margin:16px 0}.conversion button,.conversion a{margin:0 8px 10px 0}
.how{margin:44px 0 32px}.section-description{color:var(--muted);margin:0}.how-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:24px 0}.how-grid article{border:1px solid var(--edge);border-radius:16px;background:var(--card);padding:24px;min-width:0}.how-grid h3{margin:18px 0 8px}.how-grid p,.technical-note p{color:var(--muted);font-size:14px;margin:0;line-height:1.65}
code{font-family:ui-monospace,monospace;font-size:.9em;color:var(--accent);overflow-wrap:anywhere}.technical-note{border:1px solid var(--edge);border-radius:12px;background:var(--card);padding:22px 24px;margin-top:16px}.technical-note strong{display:block;margin-bottom:8px;font-size:16px}.danger-note{border-left:3px solid #bba075}.danger-note a{display:inline-block;margin-top:12px;font-size:14px}
.proof{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:32px 0}.proof div{display:grid;grid-template-columns:24px minmax(0,1fr);column-gap:10px;border:1px solid var(--edge);border-radius:12px;padding:16px}.proof span{grid-row:1/3;color:var(--accent)}.proof strong{font-size:11px;letter-spacing:.04em}.proof small{font-size:12px;color:var(--muted)}
footer{border-top:1px solid var(--edge);padding-top:22px;margin-top:38px;color:var(--muted);font-size:13px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between}
@media(max-width:720px){main{margin:0 auto;padding:20px}.page-top{margin-bottom:20px;gap:14px}nav .links{gap:10px;font-size:14px}.intro{padding:18px 0 28px}.lede{font-size:17px}.configuration{grid-template-columns:minmax(0,1fr);padding:20px;gap:16px}.config-arrow{display:none}.step-marker{padding:18px 20px}.dropzone{margin:20px;padding:24px 16px}.actions,.result-actions{align-items:stretch;flex-direction:column}.actions button,.result-actions button{width:100%}.result{padding:20px}.stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.stats article{padding:12px}.how-grid,.proof{grid-template-columns:minmax(0,1fr)}.how-grid article,.technical-note{padding:20px}.conversion button,.conversion a{width:100%;margin-right:0}.workspace>#inputError{margin:20px}.route{padding:14px}footer{font-size:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.scanline{animation:none}}