:root {
    --bg: #f6f7fb;
    --surface: #ffffff;
    --text: #1b1f2a;
    --muted: #5d6475;
    --border: #e1e4ec;
    --primary: #2f5bea;
    --primary-hover: #2449c4;
    --primary-soft: #e9eefe;
    --error-bg: #fdecec;
    --error-text: #a12626;
    --ok-bg: #e8f6ee;
    --ok-text: #17663a;
    --radius: 14px;
    --shadow: 0 1px 2px rgba(20, 24, 40, .04), 0 6px 24px rgba(20, 24, 40, .06);
    color-scheme: light;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #11141b;
        --surface: #1a1e28;
        --text: #e9ecf3;
        --muted: #a0a7b8;
        --border: #2b3140;
        --primary: #6f8ff7;
        --primary-hover: #8aa4fa;
        --primary-soft: #232c47;
        --error-bg: #3a1d1f;
        --error-text: #f4a7a7;
        --ok-bg: #173324;
        --ok-text: #8fdcb0;
        --shadow: none;
        color-scheme: dark;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    line-height: 1.55;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a { color: var(--primary); }

.container { width: 100%; max-width: 760px; margin: 0 auto; padding: 0 16px; }

.site-header { background: var(--surface); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; }
.brand small { display: block; font-weight: 500; font-size: .75rem; color: var(--muted); line-height: 1; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 9px; background: var(--primary); color: #fff; font-weight: 800; }
.nav a { color: var(--muted); text-decoration: none; font-weight: 500; padding: 6px 10px; border-radius: 8px; }
.nav a.active, .nav a:hover { color: var(--primary); background: var(--primary-soft); }

.main { flex: 1; padding-top: 40px; padding-bottom: 56px; }

h1 { font-size: clamp(1.6rem, 4vw, 2.2rem); line-height: 1.2; margin: 0 0 8px; }
.lead { color: var(--muted); margin: 0; font-size: 1.05rem; overflow-wrap: anywhere; }
.hero, .page-head { margin-bottom: 28px; }

.tool-group { margin-bottom: 32px; scroll-margin-top: 16px; }
.group-title { font-size: 1rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 0 0 12px; }
.tools { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.tool-card { display: block; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; color: var(--text); text-decoration: none; box-shadow: var(--shadow); transition: border-color .15s, transform .15s; }
.tool-card:hover { border-color: var(--primary); transform: translateY(-2px); }
.tool-card h3 { font-size: 1.15rem; margin: 12px 0 6px; }
.tool-card p { color: var(--muted); margin: 0 0 14px; font-size: .95rem; }
.tool-icon { display: inline-grid; place-items: center; width: 48px; height: 48px; border-radius: 12px; background: var(--primary-soft); color: var(--primary); }
.tool-cta { color: var(--primary); font-weight: 600; }

.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }

.dropzone { position: relative; display: flex; flex-direction: column; align-items: center; gap: 6px; text-align: center; padding: 36px 16px; border: 2px dashed var(--border); border-radius: var(--radius); cursor: pointer; transition: border-color .15s, background .15s; }
.dropzone:hover, .dropzone.dragover { border-color: var(--primary); background: var(--primary-soft); }
.dropzone.has-file { border-style: solid; border-color: var(--primary); }
.dropzone input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.dropzone-icon { color: var(--primary); }
.dropzone-title { font-weight: 600; overflow-wrap: anywhere; }
.dropzone-hint { color: var(--muted); font-size: .85rem; }

.field { border: 0; padding: 0; margin: 22px 0 0; }
.field legend, .field > label { display: block; font-weight: 600; margin-bottom: 10px; padding: 0; }
.pills { display: flex; flex-wrap: wrap; gap: 8px; }
.pill input { position: absolute; opacity: 0; pointer-events: none; }
.pill span { display: inline-block; padding: 8px 14px; border: 1px solid var(--border); border-radius: 999px; cursor: pointer; font-weight: 500; user-select: none; }
.pill input:checked + span { background: var(--primary); border-color: var(--primary); color: #fff; }
.pill input:focus-visible + span { outline: 2px solid var(--primary); outline-offset: 2px; }

select { font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 9px 12px; min-width: 220px; max-width: 100%; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font: inherit; font-weight: 600; border: 0; border-radius: 10px; padding: 12px 22px; cursor: pointer; text-decoration: none; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn:disabled { opacity: .6; cursor: not-allowed; }
form[data-upload] .btn { margin-top: 22px; width: 100%; }

.alert { border-radius: 10px; padding: 12px 14px; margin-top: 18px; }
.alert p { margin: 0; }
.alert-error { background: var(--error-bg); color: var(--error-text); }

.progress { margin-top: 18px; }
.progress-bar { height: 8px; background: var(--primary-soft); border-radius: 999px; overflow: hidden; }
.progress-bar span { display: block; height: 100%; width: 0; background: var(--primary); transition: width .2s; }
.progress-label { margin: 8px 0 0; color: var(--muted); font-size: .9rem; }

.fine-print { color: var(--muted); font-size: .85rem; margin: 14px 0 0; }
.link { font-weight: 500; }

.status-line { display: flex; align-items: center; gap: 12px; font-size: 1.2rem; }
.status-detail { color: var(--muted); margin: 6px 0 18px; }
.status-done { margin-bottom: 18px; }
.spinner { width: 22px; height: 22px; border: 3px solid var(--primary-soft); border-top-color: var(--primary); border-radius: 50%; animation: spin .8s linear infinite; flex: none; }
.spinner.stopped { animation: none; border-color: var(--primary); }
@keyframes spin { to { transform: rotate(360deg); } }

.site-footer { border-top: 1px solid var(--border); color: var(--muted); font-size: .85rem; padding: 18px 0; }
.site-footer p { margin: 4px 0; }

@media (prefers-reduced-motion: reduce) {
    .spinner { animation-duration: 2s; }
    .tool-card { transition: none; }
}

.check { display: flex; align-items: flex-start; gap: 10px; margin-top: 18px; cursor: pointer; }
.check input { width: 18px; height: 18px; margin: 2px 0 0; accent-color: var(--primary); flex: none; }
.check small { display: block; color: var(--muted); }

.dropzone + .dropzone { margin-top: 14px; }
.dropzone-label { font-weight: 600; margin: 18px 0 8px; }
.file-list { list-style: none; margin: 6px 0 0; padding: 0; font-size: .85rem; color: var(--muted); text-align: left; }

.input { width: 100%; font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 9px 12px; }
.input:focus, select:focus { outline: 2px solid var(--primary); outline-offset: 1px; border-color: var(--primary); }
.fields { display: grid; gap: 14px; margin-top: 8px; }
.fields label { display: block; font-weight: 600; margin-bottom: 6px; overflow-wrap: anywhere; }
.fields .btn { width: 100%; margin-top: 8px; }

.result { display: flex; gap: 14px; align-items: flex-start; border-radius: var(--radius); padding: 18px; margin-bottom: 20px; }
.result svg { flex: none; }
.result h2 { font-size: 1.1rem; margin: 0 0 4px; }
.result p { margin: 0; overflow-wrap: anywhere; }
.result-yes { background: var(--ok-bg); color: var(--ok-text); }
.result-no { background: var(--primary-soft); color: var(--text); }
.notice { color: var(--muted); font-size: .9rem; margin: 0 0 18px; }
.btn-block { width: 100%; margin-top: 22px; }