/* ==========================================================================
   FabCodeLabs Tools — design system
   ========================================================================== */

:root {
    --bg: #f7f8fb;
    --bg-soft: #eef0f6;
    --surface: #ffffff;
    --surface-2: #f9fafc;
    --border: #e3e6ee;
    --border-strong: #cfd4e0;
    --text: #0f172a;
    --text-2: #475569;
    --text-3: #7c8799;
    --accent: #4f46e5;
    --accent-hover: #4338ca;
    --accent-soft: #eef0ff;
    --accent-text: #ffffff;
    --grad: linear-gradient(135deg, #3b82f6 0%, #7c3aed 100%);
    --ok: #059669;   --ok-soft: #e7f8f1;
    --warn: #b45309; --warn-soft: #fff6e5;
    --err: #dc2626;  --err-soft: #fdeeee;
    --del-bg: #fde8e8; --del-fg: #9b1c1c;
    --ins-bg: #def7ec; --ins-fg: #03543f;
    --mark: #fde68a;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, .05);
    --shadow: 0 1px 3px rgba(15, 23, 42, .06), 0 6px 24px -8px rgba(15, 23, 42, .10);
    --shadow-lg: 0 24px 64px -16px rgba(15, 23, 42, .28);
    --radius: 14px;
    --radius-sm: 9px;
    --font: 'Inter', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    --mono: ui-monospace, 'SFMono-Regular', 'JetBrains Mono', Menlo, Consolas, monospace;
    --wrap: 1200px;
    color-scheme: light;

    /* category hues */
    --red: #e11d48; --red-soft: #ffe8ee;
    --green: #059669; --green-soft: #e3f7ef;
    --amber: #d97706; --amber-soft: #fff3df;
    --blue: #2563eb; --blue-soft: #e6efff;
    --violet: #7c3aed; --violet-soft: #f1eaff;
    --cyan: #0891b2; --cyan-soft: #e2f6fa;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg: #0b0f19; --bg-soft: #121829; --surface: #121829; --surface-2: #0f1522;
        --border: #232c40; --border-strong: #334059;
        --text: #e8ecf4; --text-2: #a8b3c7; --text-3: #7d8aa3;
        --accent: #818cf8; --accent-hover: #a5b4fc; --accent-soft: #1d2140; --accent-text: #0b0f19;
        --ok: #34d399; --ok-soft: #0f2a22; --warn: #fbbf24; --warn-soft: #2b2210; --err: #f87171; --err-soft: #2d1414;
        --del-bg: #3b1219; --del-fg: #fecaca; --ins-bg: #0e2e22; --ins-fg: #bbf7d0; --mark: #7c5e10;
        --shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 24px -10px rgba(0,0,0,.6); --shadow-lg: 0 24px 64px -12px rgba(0,0,0,.7);
        --red: #fb7185; --red-soft: #2c1219; --green: #34d399; --green-soft: #0d261f; --amber: #fbbf24; --amber-soft: #2a200d;
        --blue: #60a5fa; --blue-soft: #102039; --violet: #a78bfa; --violet-soft: #1e1537; --cyan: #22d3ee; --cyan-soft: #0b2530;
        color-scheme: dark;
    }
}
:root[data-theme="dark"] {
    --bg: #0b0f19; --bg-soft: #121829; --surface: #121829; --surface-2: #0f1522;
    --border: #232c40; --border-strong: #334059;
    --text: #e8ecf4; --text-2: #a8b3c7; --text-3: #7d8aa3;
    --accent: #818cf8; --accent-hover: #a5b4fc; --accent-soft: #1d2140; --accent-text: #0b0f19;
    --ok: #34d399; --ok-soft: #0f2a22; --warn: #fbbf24; --warn-soft: #2b2210; --err: #f87171; --err-soft: #2d1414;
    --del-bg: #3b1219; --del-fg: #fecaca; --ins-bg: #0e2e22; --ins-fg: #bbf7d0; --mark: #7c5e10;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 24px -10px rgba(0,0,0,.6); --shadow-lg: 0 24px 64px -12px rgba(0,0,0,.7);
    --red: #fb7185; --red-soft: #2c1219; --green: #34d399; --green-soft: #0d261f; --amber: #fbbf24; --amber-soft: #2a200d;
    --blue: #60a5fa; --blue-soft: #102039; --violet: #a78bfa; --violet-soft: #1e1537; --cyan: #22d3ee; --cyan-soft: #0b2530;
    color-scheme: dark;
}

.c-red    { --c: var(--red);    --c-soft: var(--red-soft); }
.c-green  { --c: var(--green);  --c-soft: var(--green-soft); }
.c-amber  { --c: var(--amber);  --c-soft: var(--amber-soft); }
.c-blue   { --c: var(--blue);   --c-soft: var(--blue-soft); }
.c-violet { --c: var(--violet); --c-soft: var(--violet-soft); }
.c-cyan   { --c: var(--cyan);   --c-soft: var(--cyan-soft); }

/* ── Base ─────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
    margin: 0; background: var(--bg); color: var(--text);
    font: 15px/1.6 var(--font); -webkit-font-smoothing: antialiased;
    min-height: 100vh; display: flex; flex-direction: column; overflow-x: hidden;
}
main { flex: 1; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
img, svg, canvas { max-width: 100%; }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .5em; letter-spacing: -.02em; }
h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); font-weight: 800; }
h2 { font-size: clamp(1.3rem, 2.6vw, 1.7rem); font-weight: 750; }
h3 { font-size: 1.05rem; font-weight: 650; }
p { margin: 0 0 1em; }
code, pre, kbd { font-family: var(--mono); font-size: .9em; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
::selection { background: var(--accent); color: var(--accent-text); }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 16px; }
@media (min-width: 768px) { .wrap { padding: 0 24px; } }
.muted { color: var(--text-2); }
.faint { color: var(--text-3); }
.small { font-size: .85rem; }
.mono { font-family: var(--mono); }
.center { text-align: center; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.stack > * + * { margin-top: 14px; }
.grow { flex: 1; min-width: 0; }
.mt { margin-top: 18px; }
.mt-lg { margin-top: 36px; }

/* ── Header ───────────────────────────────────────────────────────────── */
.header {
    position: sticky; top: 0; z-index: 50;
    background: color-mix(in srgb, var(--bg) 82%, transparent);
    backdrop-filter: saturate(180%) blur(14px); -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid var(--border);
}
.header .wrap { display: flex; align-items: center; gap: 14px; height: 62px; }
.logo { display: flex; align-items: center; gap: 9px; font-weight: 800; font-size: 1.08rem; color: var(--text); letter-spacing: -.02em; }
.logo:hover { color: var(--text); }
.logo-lockup { display: inline-flex; align-items: center; gap: 10px; }
.logo-mark { flex: none; display: block; border-radius: 26%; box-shadow: 0 6px 14px -6px rgba(79, 70, 229, .7); }
.logo-word { font-weight: 800; font-size: 1.12rem; letter-spacing: -.03em; color: var(--text); }
.logo-word b { color: var(--accent); font-weight: 800; }
.nav { display: none; gap: 2px; margin-left: 10px; }
.nav a { color: var(--text-2); padding: 7px 11px; border-radius: 8px; font-weight: 550; font-size: .9rem; }
.nav a:hover, .nav a.active { color: var(--text); background: var(--bg-soft); }
@media (min-width: 1080px) { .nav { display: flex; } }
.header-actions { margin-left: auto; display: flex; gap: 6px; align-items: center; }
.search-trigger {
    display: flex; align-items: center; gap: 8px; height: 38px; padding: 0 10px 0 12px;
    border: 1px solid var(--border); background: var(--surface); color: var(--text-3);
    border-radius: 10px; cursor: pointer; font: inherit; font-size: .88rem; min-width: 0;
}
.search-trigger:hover { border-color: var(--border-strong); color: var(--text-2); }
.search-trigger kbd { margin-left: 18px; background: var(--bg-soft); border: 1px solid var(--border); border-radius: 5px; padding: 1px 6px; font-size: .72rem; color: var(--text-3); }
@media (max-width: 640px) { .search-trigger .label, .search-trigger kbd { display: none; } .search-trigger { width: 38px; justify-content: center; padding: 0; } }
.icon-btn {
    width: 38px; height: 38px; display: grid; place-items: center; border-radius: 10px;
    border: 1px solid transparent; background: transparent; color: var(--text-2); cursor: pointer;
}
.icon-btn:hover { background: var(--bg-soft); color: var(--text); }
.icon-btn svg { width: 19px; height: 19px; }
.menu-btn { display: grid; }
@media (min-width: 1080px) { .menu-btn { display: none; } }
.mobile-nav { border-top: 1px solid var(--border); padding: 8px 0 14px; }
.mobile-nav a { display: flex; align-items: center; gap: 10px; padding: 10px 4px; color: var(--text); font-weight: 550; }
.mobile-nav a svg { width: 18px; height: 18px; color: var(--c); }

/* ── Icons ────────────────────────────────────────────────────────────── */
.i { width: 1em; height: 1em; flex: none; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.tile {
    width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center; flex: none;
    background: var(--c-soft); color: var(--c);
}
.tile .i { width: 21px; height: 21px; }
.tile.lg { width: 56px; height: 56px; border-radius: 15px; }
.tile.lg .i { width: 28px; height: 28px; }

/* ── Buttons ──────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    height: 42px; padding: 0 18px; border-radius: 10px; border: 1px solid var(--border);
    background: var(--surface); color: var(--text); font: inherit; font-weight: 600; font-size: .92rem;
    cursor: pointer; white-space: nowrap; transition: background .15s, border-color .15s, transform .05s, box-shadow .15s;
    text-decoration: none; user-select: none;
}
.btn:hover { border-color: var(--border-strong); background: var(--surface-2); color: var(--text); }
.btn:active { transform: translateY(1px); }
.btn .i { width: 17px; height: 17px; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); box-shadow: 0 6px 16px -8px var(--accent); }
.btn.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--accent-text); }
.btn.ghost { border-color: transparent; background: transparent; color: var(--text-2); }
.btn.ghost:hover { background: var(--bg-soft); color: var(--text); }
.btn.danger:hover { color: var(--err); border-color: var(--err); }
.btn.sm { height: 34px; padding: 0 12px; font-size: .84rem; border-radius: 8px; }
.btn.xs { height: 28px; padding: 0 9px; font-size: .78rem; border-radius: 7px; gap: 5px; }
.btn.lg { height: 50px; padding: 0 26px; font-size: 1rem; border-radius: 12px; }
.btn.block { width: 100%; }
.btn[disabled], .btn.loading { opacity: .55; pointer-events: none; }
.btn.loading::before { content: ''; width: 15px; height: 15px; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* segmented control */
.seg { display: inline-flex; background: var(--bg-soft); border: 1px solid var(--border); border-radius: 10px; padding: 3px; gap: 2px; flex-wrap: wrap; max-width: 100%; }
.seg button, .seg label {
    border: 0; background: transparent; color: var(--text-2); font: inherit; font-weight: 600; font-size: .85rem;
    padding: 6px 12px; border-radius: 7px; cursor: pointer; white-space: nowrap;
}
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg button:hover, .seg label:hover { color: var(--text); }
.seg button.on, .seg label:has(input:checked) { background: var(--surface); color: var(--text); box-shadow: var(--shadow-sm); }

/* ── Forms ────────────────────────────────────────────────────────────── */
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.label { font-size: .82rem; font-weight: 650; color: var(--text-2); display: flex; justify-content: space-between; gap: 8px; }
.label output, .label .val { color: var(--text); font-variant-numeric: tabular-nums; }
.input, .select, .textarea {
    width: 100%; font: inherit; color: var(--text); background: var(--surface);
    border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px 12px;
    transition: border-color .15s, box-shadow .15s; min-width: 0;
}
.input, .select { height: 42px; padding-top: 0; padding-bottom: 0; }
.input:hover, .select:hover, .textarea:hover { border-color: var(--border-strong); }
.input:focus, .select:focus, .textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent); }
.input.invalid, .textarea.invalid { border-color: var(--err); box-shadow: 0 0 0 3px color-mix(in srgb, var(--err) 15%, transparent); }
.select { appearance: none; padding-right: 34px; cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%237c8799' stroke-width='2.5' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 12px center; }
.textarea { min-height: 220px; resize: vertical; line-height: 1.55; }
.textarea.code, .input.code { font-family: var(--mono); font-size: .86rem; tab-size: 2; }
.textarea.sm { min-height: 110px; }
.textarea.xl { min-height: 380px; }
input[type="color"].input { padding: 4px; cursor: pointer; width: 56px; flex: none; }
input[type="range"] { width: 100%; accent-color: var(--accent); height: 22px; cursor: pointer; }
.check { display: inline-flex; align-items: center; gap: 8px; font-size: .9rem; cursor: pointer; color: var(--text); user-select: none; }
.check input { width: 17px; height: 17px; accent-color: var(--accent); cursor: pointer; margin: 0; }
.grid-2, .grid-3, .grid-4 { display: grid; gap: 14px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .grid-2 { grid-template-columns: repeat(2, 1fr); } .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } .grid-4 { grid-template-columns: repeat(4, 1fr); } }
.input-group { display: flex; }
.input-group .input, .input-group .select { border-radius: var(--radius-sm) 0 0 var(--radius-sm); }
.input-group > :last-child { border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin-left: -1px; }
.input-group .select:last-child { width: auto; flex: none; }

/* ── Cards & panels ───────────────────────────────────────────────────── */
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.panel-body { padding: 18px; }
@media (min-width: 768px) { .panel-body { padding: 26px; } }
.panel-head { padding: 14px 18px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 10px; justify-content: space-between; flex-wrap: wrap; }
.panel-foot { padding: 14px 18px; border-top: 1px solid var(--border); background: var(--surface-2); border-radius: 0 0 var(--radius) var(--radius); }
.divider { height: 1px; background: var(--border); margin: 20px 0; border: 0; }
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; padding: 14px; background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); }
.toolbar .field { flex: 1 1 150px; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.actions.end { justify-content: flex-end; }

/* tool cards */
.cards { display: grid; gap: 14px; grid-template-columns: 1fr; }
@media (min-width: 560px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px) { .cards { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1140px) { .cards.four { grid-template-columns: repeat(4, 1fr); } }
.card {
    position: relative; display: flex; gap: 14px; align-items: flex-start; padding: 18px;
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    color: var(--text); transition: border-color .15s, box-shadow .2s, transform .2s;
}
.card:hover { color: var(--text); border-color: color-mix(in srgb, var(--c) 45%, var(--border)); box-shadow: var(--shadow); transform: translateY(-2px); }
.card h3 { margin: 1px 0 4px; font-size: .98rem; }
.card p { margin: 0; color: var(--text-2); font-size: .86rem; line-height: 1.5; }
.card .fav { position: absolute; top: 10px; right: 10px; opacity: 0; }
.card:hover .fav, .card .fav.on { opacity: 1; }
.badge { display: inline-flex; align-items: center; gap: 4px; font-size: .7rem; font-weight: 700; padding: 2px 8px; border-radius: 99px; background: var(--c-soft, var(--accent-soft)); color: var(--c, var(--accent)); text-transform: uppercase; letter-spacing: .03em; }

/* ── Hero ─────────────────────────────────────────────────────────────── */
.hero { position: relative; padding: 56px 0 44px; text-align: center; overflow: hidden; }
.hero::before {
    content: ''; position: absolute; inset: -40% -10% auto; height: 520px; z-index: -1;
    background: radial-gradient(closest-side, color-mix(in srgb, #7c3aed 16%, transparent), transparent),
                radial-gradient(closest-side at 70% 40%, color-mix(in srgb, #3b82f6 14%, transparent), transparent);
}
@media (min-width: 768px) { .hero { padding: 84px 0 60px; } }
.hero h1 { font-size: clamp(2rem, 5.4vw, 3.5rem); max-width: 820px; margin: 0 auto 16px; letter-spacing: -.035em; }
.hero h1 .grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .lead { font-size: clamp(1rem, 1.8vw, 1.15rem); color: var(--text-2); max-width: 620px; margin: 0 auto 28px; }
.hero-search { position: relative; max-width: 620px; margin: 0 auto; }
.hero-search .i { position: absolute; left: 18px; top: 50%; transform: translateY(-50%); width: 20px; height: 20px; color: var(--text-3); }
.hero-search input {
    width: 100%; height: 58px; border-radius: 16px; border: 1px solid var(--border); background: var(--surface);
    padding: 0 18px 0 50px; font: inherit; font-size: 1.02rem; color: var(--text); box-shadow: var(--shadow);
}
.hero-search input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 18%, transparent), var(--shadow); }
.trust { display: flex; justify-content: center; gap: 8px 22px; flex-wrap: wrap; margin-top: 22px; color: var(--text-2); font-size: .87rem; }
.trust span { display: inline-flex; align-items: center; gap: 6px; }
.trust .i { color: var(--ok); width: 16px; height: 16px; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin-top: 26px; }
.chip {
    display: inline-flex; align-items: center; gap: 7px; padding: 7px 14px; border-radius: 99px;
    background: var(--surface); border: 1px solid var(--border); color: var(--text); font-weight: 600; font-size: .87rem;
}
.chip .i { color: var(--c); width: 16px; height: 16px; }
.chip:hover { border-color: var(--c); color: var(--text); }

.section { padding: 36px 0; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.section-head h2 { margin: 0; display: flex; align-items: center; gap: 12px; }
.section-head p { margin: 4px 0 0; color: var(--text-2); }

.features { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 700px) { .features { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .features { grid-template-columns: repeat(4, 1fr); } }
.feature { padding: 22px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.feature .tile { margin-bottom: 14px; }
.feature p { color: var(--text-2); font-size: .9rem; margin: 0; }

/* ── Tool page ────────────────────────────────────────────────────────── */
.crumbs { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; font-size: .84rem; color: var(--text-3); padding: 20px 0 0; }
.crumbs a { color: var(--text-2); }
.crumbs a:hover { color: var(--accent); }
.tool-head { display: flex; gap: 16px; align-items: flex-start; padding: 16px 0 22px; }
.tool-head h1 { margin: 0 0 4px; font-size: clamp(1.5rem, 3.4vw, 2.1rem); }
.tool-head p { margin: 0; color: var(--text-2); }
.tool-head .fav-btn { margin-left: auto; }
.privacy-note { display: inline-flex; gap: 6px; align-items: center; font-size: .8rem; color: var(--ok); font-weight: 600; margin-top: 8px; }
.privacy-note .i { width: 15px; height: 15px; }
.tool-layout { display: grid; gap: 28px; grid-template-columns: minmax(0, 1fr); padding-bottom: 56px; }
@media (min-width: 1080px) { .tool-layout.with-aside { grid-template-columns: minmax(0, 1fr) 300px; } }
.aside-sticky { position: sticky; top: 80px; }

/* dropzone */
.dropzone {
    position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
    text-align: center; min-height: 230px; padding: 30px 20px; border: 2px dashed var(--border-strong);
    border-radius: var(--radius); background: var(--surface-2); cursor: pointer; transition: border-color .15s, background .15s;
}
.dropzone:hover, .dropzone.over { border-color: var(--c, var(--accent)); background: color-mix(in srgb, var(--c, var(--accent)) 5%, var(--surface)); }
.dropzone .tile { width: 60px; height: 60px; border-radius: 16px; }
.dropzone .tile .i { width: 28px; height: 28px; }
.dropzone strong { font-size: 1.05rem; }
.dropzone .btn { pointer-events: none; }
.dropzone input { display: none; }
.dropzone.compact { min-height: 0; padding: 16px; flex-direction: row; gap: 10px; }

/* file list */
.files { display: flex; flex-direction: column; gap: 8px; }
.file-row {
    display: flex; align-items: center; gap: 12px; padding: 10px 12px; background: var(--surface);
    border: 1px solid var(--border); border-radius: var(--radius-sm);
}
.file-row.dragging { opacity: .5; }
.file-row .thumb-sm { width: 44px; height: 44px; border-radius: 7px; object-fit: cover; background: var(--bg-soft); flex: none; display: grid; place-items: center; color: var(--text-3); overflow: hidden; }
.file-row .thumb-sm canvas, .file-row .thumb-sm img { width: 100%; height: 100%; object-fit: cover; }
.file-row .name { font-weight: 600; font-size: .9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.file-row .meta { font-size: .8rem; color: var(--text-3); }
.file-row .handle { cursor: grab; color: var(--text-3); }
.saving { color: var(--ok); font-weight: 700; }
.saving.neg { color: var(--warn); }

/* page thumbnails */
.thumbs { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(118px, 1fr)); }
.thumb {
    position: relative; border: 2px solid var(--border); border-radius: 10px; background: var(--surface);
    padding: 8px; cursor: pointer; text-align: center; transition: border-color .15s, opacity .15s;
}
.thumb:hover { border-color: var(--border-strong); }
.thumb .pg { display: grid; place-items: center; aspect-ratio: 3/4; overflow: hidden; }
.thumb canvas { max-height: 100%; box-shadow: 0 1px 4px rgba(0,0,0,.18); transition: transform .25s; background: #fff; }
.thumb .n { font-size: .78rem; color: var(--text-3); margin-top: 6px; font-weight: 600; }
.thumb.off { border-color: var(--err); opacity: .55; }
.thumb.off::after { content: ''; position: absolute; inset: 8px 8px 28px; background: repeating-linear-gradient(45deg, transparent 0 8px, color-mix(in srgb, var(--err) 18%, transparent) 8px 16px); border-radius: 4px; }
.thumb .x { position: absolute; top: 4px; right: 4px; }
.thumb.sel { border-color: var(--accent); }

/* results & stats */
.stats { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); }
.stat { padding: 14px 16px; background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); }
.stat b { display: block; font-size: 1.45rem; font-weight: 800; letter-spacing: -.02em; font-variant-numeric: tabular-nums; line-height: 1.2; word-break: break-word; }
.stat span { font-size: .78rem; color: var(--text-3); font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
.stat.hl { background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 30%, var(--border)); }
.stat.hl b { color: var(--accent); }
.big-result { text-align: center; padding: 26px 18px; background: var(--accent-soft); border-radius: var(--radius); border: 1px solid color-mix(in srgb, var(--accent) 25%, var(--border)); }
.big-result .v { font-size: clamp(2rem, 6vw, 3rem); font-weight: 850; letter-spacing: -.03em; color: var(--accent); line-height: 1.1; font-variant-numeric: tabular-nums; word-break: break-word; }
.big-result .l { color: var(--text-2); font-weight: 600; margin-top: 6px; }
.out-row { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface-2); }
.out-row .k { width: 110px; flex: none; font-size: .8rem; font-weight: 700; color: var(--text-3); text-transform: uppercase; letter-spacing: .03em; }
.out-row .v { flex: 1; min-width: 0; font-family: var(--mono); font-size: .88rem; word-break: break-all; }
.outs { display: flex; flex-direction: column; gap: 8px; }
.code-out { font-family: var(--mono); font-size: .86rem; white-space: pre-wrap; word-break: break-all; padding: 14px; background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); max-height: 520px; overflow: auto; margin: 0; }
.preview-box { display: grid; place-items: center; padding: 16px; min-height: 220px; border-radius: var(--radius-sm); border: 1px solid var(--border);
    background: repeating-conic-gradient(var(--bg-soft) 0 25%, var(--surface) 0 50%) 0 0 / 20px 20px; overflow: hidden; }
.preview-box img, .preview-box canvas, .preview-box svg { max-height: 460px; object-fit: contain; }

.alert { display: flex; gap: 10px; padding: 12px 14px; border-radius: var(--radius-sm); font-size: .9rem; align-items: flex-start; border: 1px solid transparent; }
.alert .i { width: 18px; height: 18px; flex: none; margin-top: 2px; }
.alert.ok { background: var(--ok-soft); color: var(--ok); border-color: color-mix(in srgb, var(--ok) 25%, transparent); }
.alert.err { background: var(--err-soft); color: var(--err); border-color: color-mix(in srgb, var(--err) 25%, transparent); }
.alert.warn { background: var(--warn-soft); color: var(--warn); border-color: color-mix(in srgb, var(--warn) 25%, transparent); }
.alert.info { background: var(--accent-soft); color: var(--accent); }

.progress { height: 8px; background: var(--bg-soft); border-radius: 99px; overflow: hidden; }
.progress > div { height: 100%; width: 0; background: var(--grad); transition: width .2s; border-radius: 99px; }

.meter { height: 8px; border-radius: 99px; background: var(--bg-soft); overflow: hidden; }
.meter > div { height: 100%; border-radius: 99px; transition: width .25s, background .25s; }

table.table { width: 100%; border-collapse: collapse; font-size: .87rem; font-variant-numeric: tabular-nums; }
.table th, .table td { padding: 9px 12px; text-align: right; border-bottom: 1px solid var(--border); white-space: nowrap; }
.table th:first-child, .table td:first-child { text-align: left; }
.table th { font-size: .75rem; text-transform: uppercase; letter-spacing: .04em; color: var(--text-3); font-weight: 700; background: var(--surface-2); position: sticky; top: 0; }
.table-wrap { overflow: auto; max-height: 440px; border: 1px solid var(--border); border-radius: var(--radius-sm); }
.table.left td, .table.left th { text-align: left; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 18px; overflow-x: auto; scrollbar-width: none; }
.tabs button { border: 0; background: none; font: inherit; font-weight: 600; font-size: .9rem; color: var(--text-2); padding: 10px 14px; cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; white-space: nowrap; }
.tabs button:hover { color: var(--text); }
.tabs button.on { color: var(--accent); border-color: var(--accent); }

mark { background: var(--mark); color: inherit; border-radius: 3px; padding: 0 1px; }
mark.alt { background: color-mix(in srgb, var(--accent) 30%, transparent); }
del.d, ins.d { text-decoration: none; border-radius: 3px; padding: 0 1px; }
del.d { background: var(--del-bg); color: var(--del-fg); text-decoration: line-through; text-decoration-color: color-mix(in srgb, var(--del-fg) 50%, transparent); }
ins.d { background: var(--ins-bg); color: var(--ins-fg); }

/* ── Content / SEO sections ───────────────────────────────────────────── */
.content { display: grid; gap: 22px; grid-template-columns: 1fr; margin-top: 40px; }
@media (min-width: 900px) { .content { grid-template-columns: 1fr 1fr; } }
.steps { list-style: none; padding: 0; margin: 0; counter-reset: s; display: flex; flex-direction: column; gap: 14px; }
.steps li { counter-increment: s; display: flex; gap: 12px; align-items: flex-start; }
.steps li::before { content: counter(s); flex: none; width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent); font-weight: 800; font-size: .85rem; }
.faq details { border-bottom: 1px solid var(--border); }
.faq details:last-child { border-bottom: 0; }
.faq summary { cursor: pointer; list-style: none; padding: 14px 0; font-weight: 650; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; font-size: 1.3rem; line-height: 1; color: var(--text-3); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--text-2); margin: 0 0 16px; }
.prose { max-width: 760px; }
.prose h2 { margin-top: 1.6em; font-size: 1.3rem; }
.prose p, .prose li { color: var(--text-2); }
.prose ul { padding-left: 1.2em; }

.page-head { padding: 44px 0 26px; }
.page-head p { color: var(--text-2); font-size: 1.06rem; max-width: 680px; margin: 0; }

/* ── Footer ───────────────────────────────────────────────────────────── */
.footer { border-top: 1px solid var(--border); background: var(--surface); margin-top: 40px; padding: 44px 0 26px; font-size: .9rem; }
.footer-grid { display: grid; gap: 28px 24px; grid-template-columns: repeat(2, 1fr); }
@media (min-width: 700px) { .footer-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1100px) { .footer-grid { grid-template-columns: 1.6fr repeat(6, 1fr); } }
.footer-grid > .footer-brand { grid-column: 1 / -1; }
@media (min-width: 1100px) { .footer-grid > .footer-brand { grid-column: auto; } }
.footer h4 a { color: var(--text-3); }
.footer h4 { font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; color: var(--text-3); margin-bottom: 12px; }
.footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.footer a { color: var(--text-2); }
.footer a:hover { color: var(--accent); }
.footer-bottom { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; border-top: 1px solid var(--border); margin-top: 32px; padding-top: 20px; color: var(--text-3); font-size: .84rem; }

/* ── Command palette ──────────────────────────────────────────────────── */
.palette-backdrop { position: fixed; inset: 0; z-index: 100; background: rgba(8, 11, 20, .5); backdrop-filter: blur(4px); display: flex; justify-content: center; align-items: flex-start; padding: 10vh 16px 16px; }
.palette { width: 100%; max-width: 620px; background: var(--surface); border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--shadow-lg); overflow: hidden; animation: pop .16s ease-out; }
@keyframes pop { from { opacity: 0; transform: translateY(-8px) scale(.98); } }
.palette-input { display: flex; align-items: center; gap: 12px; padding: 0 16px; border-bottom: 1px solid var(--border); }
.palette-input .i { width: 20px; height: 20px; color: var(--text-3); }
.palette-input input { flex: 1; height: 58px; border: 0; background: transparent; font: inherit; font-size: 1.05rem; color: var(--text); outline: none; min-width: 0; }
.palette-list { max-height: min(60vh, 460px); overflow-y: auto; padding: 8px; }
.palette-item { display: flex; gap: 12px; align-items: center; padding: 10px 12px; border-radius: 10px; color: var(--text); cursor: pointer; }
.palette-item.on { background: var(--accent-soft); }
.palette-item .t { font-weight: 600; font-size: .94rem; }
.palette-item .d { font-size: .8rem; color: var(--text-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.palette-item .c { margin-left: auto; font-size: .72rem; color: var(--text-3); white-space: nowrap; }
.palette-empty { padding: 30px; text-align: center; color: var(--text-3); }
.palette-foot { display: flex; gap: 16px; padding: 10px 16px; border-top: 1px solid var(--border); font-size: .76rem; color: var(--text-3); background: var(--surface-2); }
.palette-foot kbd { background: var(--surface); border: 1px solid var(--border); border-radius: 4px; padding: 0 5px; }

/* ── Toast ────────────────────────────────────────────────────────────── */
.toasts { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); z-index: 200; display: flex; flex-direction: column; gap: 8px; align-items: center; pointer-events: none; width: calc(100% - 32px); max-width: 420px; }
.toast { background: var(--text); color: var(--bg); padding: 11px 16px; border-radius: 11px; font-weight: 600; font-size: .9rem; box-shadow: var(--shadow-lg); animation: toast .2s ease-out; display: flex; gap: 8px; align-items: center; }
.toast.err { background: var(--err); color: #fff; }
@keyframes toast { from { opacity: 0; transform: translateY(10px); } }

/* ── Ads (auto ads fill these; collapse when empty) ───────────────────── */
.ad-slot { margin: 28px 0; min-height: 0; text-align: center; }
.ad-slot:empty { display: none; }

/* ── Misc ─────────────────────────────────────────────────────────────── */
.empty-state { text-align: center; padding: 34px 16px; color: var(--text-3); }
.kbd { font-family: var(--mono); font-size: .75rem; background: var(--bg-soft); border: 1px solid var(--border); padding: 1px 6px; border-radius: 5px; }
.swatch { width: 100%; aspect-ratio: 1; border-radius: 8px; border: 1px solid var(--border); cursor: pointer; }
.swatches { display: grid; grid-template-columns: repeat(auto-fill, minmax(52px, 1fr)); gap: 8px; }
.split { display: grid; gap: 14px; grid-template-columns: 1fr; }
@media (min-width: 900px) { .split { grid-template-columns: 1fr 1fr; } }
.md-preview { padding: 18px 22px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface); overflow: auto; min-height: 380px; max-height: 70vh; }
.md-preview img { max-width: 100%; }
.md-preview pre { background: var(--surface-2); padding: 12px; border-radius: 8px; overflow: auto; }
.md-preview table { border-collapse: collapse; }
.md-preview th, .md-preview td { border: 1px solid var(--border); padding: 6px 10px; }
.md-preview blockquote { margin: 0; padding-left: 14px; border-left: 3px solid var(--border-strong); color: var(--text-2); }
.crop-stage { position: relative; display: inline-block; user-select: none; touch-action: none; max-width: 100%; line-height: 0; }
.crop-stage img { max-height: 70vh; display: block; }
.crop-box { position: absolute; border: 2px solid #fff; box-shadow: 0 0 0 9999px rgba(0,0,0,.55); cursor: move; outline: 1px solid rgba(0,0,0,.35); }
.crop-box::before, .crop-box::after { content: ''; position: absolute; border: 0 dashed rgba(255,255,255,.5); pointer-events: none; }
.crop-box::before { inset: 0 33.33%; border-width: 0 1px; }
.crop-box::after { inset: 33.33% 0; border-width: 1px 0; }
.crop-stage .h { position: absolute; width: 16px; height: 16px; background: #fff; border: 2px solid var(--accent); border-radius: 50%; }
.crop-stage .h.nw { left: -8px; top: -8px; cursor: nwse-resize; }
.crop-stage .h.ne { right: -8px; top: -8px; cursor: nesw-resize; }
.crop-stage .h.sw { left: -8px; bottom: -8px; cursor: nesw-resize; }
.crop-stage .h.se { right: -8px; bottom: -8px; cursor: nwse-resize; }
.donut { width: 170px; height: 170px; border-radius: 50%; position: relative; flex: none; }
.donut::after { content: ''; position: absolute; inset: 26px; background: var(--surface); border-radius: 50%; }
.legend { display: flex; flex-direction: column; gap: 8px; font-size: .9rem; }
.legend i { display: inline-block; width: 11px; height: 11px; border-radius: 3px; margin-right: 8px; }
.bmi-scale { position: relative; height: 12px; border-radius: 99px; background: linear-gradient(90deg, #60a5fa 0 23%, #34d399 23% 43%, #fbbf24 43% 63%, #f87171 63%); }
.bmi-scale .pin { position: absolute; top: -5px; width: 4px; height: 22px; background: var(--text); border-radius: 2px; transform: translateX(-50%); transition: left .3s; }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } html { scroll-behavior: auto; } }
@media print { .header, .footer, .ad-slot, .content, .related { display: none !important; } }

/* theme toggle icon */
.light-hide { display: none; }
:root[data-theme="dark"] .light-hide { display: block; }
:root[data-theme="dark"] .dark-hide { display: none; }
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .light-hide { display: block; }
    :root:not([data-theme="light"]) .dark-hide { display: none; }
}

@media (max-width: 640px) { .hide-sm { display: none; } }

/* Tools with a live preview: show the preview first on small screens */
@media (max-width: 1079px) { .tool-layout.with-aside > aside { order: -1; } .aside-sticky { position: static; } }

/* "About this tool" feature list */
.feature-list { display: grid; gap: 14px; grid-template-columns: 1fr; margin-top: 18px; }
@media (min-width: 560px) { .feature-list { grid-template-columns: 1fr 1fr; } }
.feature-list > div { display: flex; gap: 10px; align-items: flex-start; }
.feature-list .i { width: 20px; height: 20px; color: var(--c, var(--accent)); margin-top: 2px; }
.feature-list strong { display: block; font-size: .92rem; }
.feature-list span { font-size: .85rem; color: var(--text-2); }