/* ============================================================
   Image Annotator - scoped under .ian / .ian-* (rebuilt 2026-10-07)
   Shared header, footer, FAQ and related pills come from custom_styles.css.
   Blue accent (the page's established colour). Single colours, no
   gradients, no thick side borders. Light default, dark via [data-theme="dark"].
   ============================================================ */
.ian {
    --ian-accent: #3399cc;
    --ian-accent-strong: #237a9f;
    --ian-accent-soft: rgba(51, 153, 204, 0.1);
    --ian-accent-line: rgba(51, 153, 204, 0.45);
    --ian-go: #237a9f;
    --ian-go-hover: #1b6183;
    --ian-card: var(--bg-elevated, #fff);
    --ian-sunk: var(--card-tertiary, #f1f5f9);
    --ian-open: var(--card-secondary, #f8f9fa);
    --ian-line: var(--border-color, #e2e8f0);
    --ian-text-1: var(--text-primary, #1e293b);
    --ian-text-2: var(--text-secondary, #475569);
    --ian-muted: var(--text-muted, #64748b);
    --ian-stage: #e5e7eb;
    --ian-checker: #d9dde3;
    --ian-red: #c23b3b;
    --ian-green: #2f855a;
}
[data-theme="dark"] .ian {
    --ian-accent: #60b8e0;
    --ian-accent-strong: #8fd0ee;
    --ian-accent-soft: rgba(96, 184, 224, 0.13);
    --ian-accent-line: rgba(96, 184, 224, 0.5);
    --ian-go: #237a9f;
    --ian-go-hover: #2b8fba;
    --ian-sunk: #172033;
    --ian-open: #1a2438;
    --ian-stage: #0f1726;
    --ian-checker: #1b2537;
    --ian-red: #f87171;
    --ian-green: #4ade80;
}

.ian.tool-container { max-width: 1200px; margin: 0 auto; padding: 2rem; box-sizing: border-box; }
.ian [hidden] { display: none !important; }
.ian .ian-main { background: none; border: none; box-shadow: none; border-radius: 0; overflow: visible; padding: 0; }
.ian button { font: inherit; }
.ian kbd {
    display: inline-block; min-width: 1.5em; padding: 0.05rem 0.35rem; border-radius: 5px; text-align: center;
    border: 1px solid var(--ian-line); border-bottom-width: 2px; background: var(--ian-card); color: var(--ian-text-1);
    font: 600 0.78em/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ---------- title ---------- */
.ian .tool-header { text-align: center; margin-bottom: 1.6rem; }
.ian .tool-title-row { display: flex; align-items: center; justify-content: center; gap: 0.9rem; margin-bottom: 0.9rem; }
.ian .ian-title-icon {
    width: 56px; height: 56px; border-radius: 16px; background: var(--ian-accent); color: #fff;
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
[data-theme="dark"] .ian .ian-title-icon { color: #0b1e33; }
.ian .ian-title-icon svg { width: 30px; height: 30px; display: block; }
.ian .tool-title { margin: 0; font-size: 2rem; font-weight: 700; color: var(--ian-accent); line-height: 1.2; }
.ian .tool-description { max-width: 800px; margin: 0 auto; font-size: 1.05rem; line-height: 1.65; color: var(--ian-text-2); }
.ian .tool-description a { color: var(--ian-accent-strong); font-weight: 500; }
[data-theme="dark"] .ian .tool-description a { color: var(--ian-accent); }

/* ---------- error + toast ---------- */
.ian .ian-error {
    display: flex; align-items: flex-start; gap: 0.7rem; margin: 0 0 1rem; padding: 0.9rem 1rem;
    border-radius: 12px; border: 1px solid rgba(230, 78, 78, 0.35); background: rgba(230, 78, 78, 0.08); color: var(--ian-text-1);
}
.ian .ian-error > svg { width: 20px; height: 20px; color: #e64e4e; flex-shrink: 0; margin-top: 2px; }
.ian .ian-error > div { flex: 1; min-width: 0; }
.ian .ian-error p { margin: 0; font-size: 0.92rem; line-height: 1.55; overflow-wrap: anywhere; }
.ian .ian-error p + p { margin-top: 0.3rem; color: var(--ian-muted); font-size: 0.86rem; }
.ian .ian-error a { color: var(--ian-red); font-weight: 600; }
.ian .ian-x {
    display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; flex-shrink: 0;
    border: none; border-radius: 8px; background: none; color: var(--ian-muted); cursor: pointer; padding: 0;
}
.ian .ian-x:hover { background: rgba(100, 116, 139, 0.12); color: var(--ian-text-1); }
.ian .ian-x svg { width: 18px; height: 18px; }

.ian .ian-toast {
    position: fixed; left: 50%; bottom: 24px; z-index: 9500; max-width: min(92vw, 560px);
    padding: 0.7rem 1rem; border-radius: 12px; background: #1e293b; color: #fff; font-size: 0.9rem; line-height: 1.45;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25); transform: translate(-50%, 12px); opacity: 0;
    transition: opacity 0.25s, transform 0.25s; pointer-events: none; text-align: center;
}
.ian .ian-toast.show { opacity: 1; transform: translate(-50%, 0); }
[data-theme="dark"] .ian .ian-toast { background: #e2e8f0; color: #0f172a; }

/* ---------- cards + shared ---------- */
.ian .ian-card {
    background: var(--ian-card); border: 1px solid var(--ian-line); border-radius: 20px;
    padding: 1.25rem; box-shadow: var(--shadow-sm, 0 1px 3px rgba(0, 0, 0, 0.06)); margin-bottom: 1.25rem;
}
.ian .ian-caption {
    display: inline-flex; align-items: center; gap: 0.35rem; font-size: 0.7rem; font-weight: 700; letter-spacing: 0.06em;
    text-transform: uppercase; color: var(--ian-muted); white-space: nowrap;
}
.ian .ian-caption svg { width: 14px; height: 14px; }
.ian .ian-hint { margin: 0.55rem 0 0; font-size: 0.8rem; line-height: 1.5; color: var(--ian-muted); }
.ian .ian-gap { margin-top: 0.8rem; }

/* buttons */
.ian .ian-btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.45rem; width: auto;
    min-height: 42px; padding: 0.55rem 1rem; margin: 0; border-radius: 12px; border: 1px solid transparent;
    font-size: 0.92rem; font-weight: 700; cursor: pointer; white-space: nowrap; text-decoration: none;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.ian .ian-btn svg { width: 18px; height: 18px; flex-shrink: 0; }
.ian .ian-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.ian .ian-go { background: var(--ian-go); color: #fff; }
.ian .ian-go:hover:not(:disabled) { background: var(--ian-go-hover); color: #fff; }
.ian .ian-btn-ghost { background: var(--ian-sunk); color: var(--ian-text-2); border-color: var(--ian-line); }
.ian .ian-btn-ghost:hover:not(:disabled) { color: var(--ian-text-1); border-color: var(--ian-accent-line); }
.ian .ian-btn-sm { min-height: 34px; padding: 0.35rem 0.75rem; font-size: 0.82rem; border-radius: 9px; }
.ian .ian-btn-sm svg { width: 15px; height: 15px; }
.ian .ian-link-btn {
    display: inline-flex; align-items: center; gap: 0.3rem; width: auto; padding: 0.2rem 0; margin: 0; border: none; background: none; cursor: pointer;
    color: var(--ian-accent-strong); font-size: 0.84rem; font-weight: 600;
}
[data-theme="dark"] .ian .ian-link-btn { color: var(--ian-accent); }
.ian .ian-link-btn:hover { text-decoration: underline; }
.ian .ian-link-btn svg { width: 15px; height: 15px; }

/* ---------- logo loader ---------- */
.ian .ian-loader {
    display: block; overflow: visible; flex-shrink: 0;
    --cico-outer: #f2534e; --cico-outer-soft: #f8d3d1; --cico-mid: #31ae77; --cico-mid-soft: #d0e7dd; --cico-inner: #2b9edb;
}
[data-theme="dark"] .ian .ian-loader { --cico-outer-soft: rgba(242, 83, 78, 0.22); --cico-mid-soft: rgba(49, 174, 119, 0.22); }
.ian .ian-loader circle { fill: none; stroke-width: 72; transform-box: fill-box; transform-origin: center; }
.ian .ian-loader .bp { stroke: var(--cico-outer-soft); }
.ian .ian-loader .gp { stroke: var(--cico-mid-soft); }
.ian .ian-loader .b { stroke: var(--cico-outer); stroke-linecap: round; stroke-dasharray: 35.3 100; animation: ianSpinL 1.3s linear infinite; }
.ian .ian-loader .g { stroke: var(--cico-mid); stroke-linecap: round; stroke-dasharray: 75.8 100; animation: ianSpinR 2.1s linear infinite; }
.ian .ian-loader .r { stroke: var(--cico-inner); animation: ianBreathe 1.3s ease-in-out infinite; }
@keyframes ianSpinL { from { transform: rotate(117deg); } to { transform: rotate(-243deg); } }
@keyframes ianSpinR { from { transform: rotate(36deg); } to { transform: rotate(396deg); } }
@keyframes ianBreathe { 50% { transform: scale(0.9); } }
@media (prefers-reduced-motion: reduce) {
    .ian .ian-loader .b { animation-duration: 4s; }
    .ian .ian-loader .g { animation-duration: 6s; }
    .ian .ian-loader .r { animation: none; }
    .ian .ian-toast { transition: none; }
}

/* ---------- upload ---------- */
.ian .ian-upload { position: relative; }
.ian .ian-drop {
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0.4rem; text-align: center;
    min-height: 240px; padding: 1.75rem 1.25rem; border-radius: 16px; border: 2px dashed var(--ian-accent-line);
    background: var(--ian-accent-soft); cursor: pointer; color: var(--ian-muted); font-size: 0.88rem; line-height: 1.5;
    transition: border-color 0.15s, background 0.15s; box-sizing: border-box;
}
.ian .ian-drop:hover, .ian .ian-drop.is-over { border-color: var(--ian-accent); background: rgba(51, 153, 204, 0.15); }
.ian .ian-drop:focus-visible { outline: 3px solid var(--ian-accent-line); outline-offset: 2px; }
.ian .ian-drop-title { font-size: 1.12rem; color: var(--ian-text-1); }
.ian .ian-drop-link { color: var(--ian-accent-strong); text-decoration: underline; text-underline-offset: 3px; }
[data-theme="dark"] .ian .ian-drop-link { color: var(--ian-accent); }
.ian .ian-drop-icon {
    width: 60px; height: 60px; border-radius: 16px; display: flex; align-items: center; justify-content: center; margin-bottom: 0.3rem;
    background: var(--ian-card); color: var(--ian-accent); border: 1px solid var(--ian-line);
}
.ian .ian-drop-icon svg { width: 30px; height: 30px; }
.ian .ian-types { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.35rem; margin-top: 0.4rem; }
.ian .ian-types span {
    padding: 0.12rem 0.5rem; border-radius: 6px; background: var(--ian-card); border: 1px solid var(--ian-line);
    font-size: 0.72rem; font-weight: 700; letter-spacing: 0.04em; color: var(--ian-text-2);
}
.ian .ian-under { display: flex; flex-wrap: wrap; align-items: center; gap: 0.45rem 0.6rem; margin-top: 0.85rem; }
.ian .ian-under-links { margin-left: auto; display: inline-flex; flex-wrap: wrap; gap: 0.3rem 1rem; }
.ian .ian-pill {
    display: inline-flex; align-items: center; gap: 0.35rem; padding: 0.22rem 0.65rem; border-radius: 999px;
    background: var(--ian-sunk); border: 1px solid var(--ian-line); font-size: 0.78rem; font-weight: 600; color: var(--ian-text-2);
}
.ian .ian-pill svg { width: 14px; height: 14px; color: var(--ian-accent); }
.ian .ian-restore {
    display: flex; align-items: center; gap: 0.8rem; flex-wrap: wrap; margin-bottom: 1rem; padding: 0.75rem 0.9rem;
    border-radius: 14px; border: 1px solid var(--ian-accent-line); background: var(--ian-accent-soft);
}
.ian .ian-restore-thumb { width: 62px; height: 46px; object-fit: cover; border-radius: 8px; border: 1px solid var(--ian-line); flex-shrink: 0; }
.ian .ian-restore-text { flex: 1; min-width: 180px; display: flex; flex-direction: column; }
.ian .ian-restore-text strong { font-size: 0.95rem; color: var(--ian-text-1); }
.ian .ian-restore-text span { font-size: 0.83rem; color: var(--ian-text-2); }
.ian .ian-restore-actions { display: flex; gap: 0.45rem; }

/* ---------- editor: presets + batch strip ---------- */
.ian .ian-editor { padding: 1rem; }
.ian .ian-presets { display: flex; flex-direction: column; gap: 0.45rem; margin-bottom: 0.85rem; }
.ian .ian-preset-row { display: flex; gap: 0.4rem; }
.ian .ian-preset {
    flex: 1 1 0; min-width: 0; display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
    min-height: 38px; padding: 0.35rem 0.5rem; margin: 0; border-radius: 10px; border: 1px solid var(--ian-line);
    background: var(--ian-card); color: var(--ian-text-2); font-size: 0.84rem; font-weight: 700; cursor: pointer; white-space: nowrap;
}
.ian .ian-preset svg { width: 16px; height: 16px; flex-shrink: 0; color: var(--ian-accent); }
.ian .ian-preset span { overflow: hidden; text-overflow: ellipsis; }
.ian .ian-preset:hover { border-color: var(--ian-accent-line); color: var(--ian-text-1); }
.ian .ian-preset.active { border-color: var(--ian-accent); background: var(--ian-accent-soft); color: var(--ian-accent-strong); }
[data-theme="dark"] .ian .ian-preset.active { color: var(--ian-accent); }

.ian .ian-strip {
    display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 0.85rem; padding: 0.6rem 0.75rem;
    border-radius: 14px; background: var(--ian-sunk); border: 1px solid var(--ian-line);
}
.ian .ian-thumbs { display: flex; gap: 0.45rem; overflow-x: auto; flex: 1 1 260px; min-width: 0; padding: 4px 2px; scrollbar-width: thin; }
.ian .ian-thumb { position: relative; flex-shrink: 0; }
.ian .ian-thumb-btn {
    display: block; width: 66px; height: 50px; padding: 0; margin: 0; border-radius: 9px; overflow: hidden; cursor: pointer;
    border: 2px solid var(--ian-line); background: var(--ian-card);
}
.ian .ian-thumb-btn img { display: block; width: 100%; height: 100%; object-fit: cover; }
.ian .ian-thumb.active .ian-thumb-btn { border-color: var(--ian-accent); box-shadow: 0 0 0 2px var(--ian-accent-soft); }
.ian .ian-thumb-num {
    position: absolute; left: 4px; bottom: 4px; min-width: 18px; height: 18px; padding: 0 4px; border-radius: 9px;
    background: rgba(15, 23, 42, 0.75); color: #fff; font-size: 0.68rem; font-weight: 700; line-height: 18px; text-align: center;
}
.ian .ian-thumb-remove {
    position: absolute; top: -6px; right: -6px; width: 22px; height: 22px; padding: 0; margin: 0; border-radius: 50%;
    border: 1px solid var(--ian-line); background: var(--ian-card); color: var(--ian-muted); font-size: 14px; line-height: 1; cursor: pointer;
    display: flex; align-items: center; justify-content: center; opacity: 0; transition: opacity 0.15s;
}
.ian .ian-thumb:hover .ian-thumb-remove, .ian .ian-thumb-remove:focus-visible { opacity: 1; }
.ian .ian-thumb-remove:hover { color: #e64e4e; border-color: #e64e4e; }
@media (hover: none) { .ian .ian-thumb-remove { opacity: 1; } }
.ian .ian-strip-actions { display: flex; gap: 0.4rem; flex-wrap: wrap; }

/* ---------- toolbar ---------- */
.ian .ian-toolbar {
    display: flex; flex-wrap: wrap; gap: 0.35rem 0.25rem; padding: 0.5rem; border-radius: 14px;
    background: var(--ian-sunk); border: 1px solid var(--ian-line);
}
.ian .ian-tgroup { display: flex; flex-direction: column; gap: 0.2rem; padding: 0 0.45rem; min-width: 0; }
.ian .ian-tgroup + .ian-tgroup { border-left: 1px solid var(--ian-line); }
.ian .ian-tgroup-label { font-size: 0.62rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ian-muted); padding-left: 2px; }
.ian .ian-tbtns { display: flex; gap: 0.2rem; align-items: center; flex-wrap: wrap; }
.ian .ian-tool, .ian .ian-icon-btn {
    display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; padding: 0; margin: 0;
    border-radius: 10px; border: 1px solid transparent; background: none; color: var(--ian-text-2); cursor: pointer;
    transition: background 0.12s, color 0.12s, border-color 0.12s;
}
.ian .ian-tool svg, .ian .ian-icon-btn svg { width: 20px; height: 20px; }
.ian .ian-tool:hover, .ian .ian-icon-btn:hover:not(:disabled) { background: var(--ian-card); color: var(--ian-text-1); border-color: var(--ian-line); }
.ian .ian-tool.active { background: var(--ian-go); color: #fff; border-color: var(--ian-go); }
.ian .ian-icon-btn.active { background: var(--ian-accent-soft); color: var(--ian-accent-strong); border-color: var(--ian-accent-line); }
.ian .ian-icon-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.ian .ian-icon-btn.ian-danger:hover { color: #e64e4e; border-color: rgba(230, 78, 78, 0.4); }
.ian .ian-tool:focus-visible, .ian .ian-icon-btn:focus-visible, .ian .ian-btn:focus-visible { outline: 2px solid var(--ian-accent); outline-offset: 2px; }

/* ---------- options bar ---------- */
.ian .ian-options {
    display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1.1rem; min-height: 52px; margin-top: 0.6rem;
    padding: 0.5rem 0.75rem; border-radius: 14px; border: 1px solid var(--ian-line); background: var(--ian-card);
}
.ian .ian-opt { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; min-width: 0; }
.ian .ian-opt-wide { flex: 1 1 100%; }
.ian .ian-opt-label { display: inline-flex; align-items: center; gap: 0.3rem; font-size: 0.78rem; font-weight: 700; color: var(--ian-text-2); white-space: nowrap; }
.ian .ian-opt-label svg { width: 14px; height: 14px; color: var(--ian-accent); }
.ian .ian-opt-hint { display: inline-flex; align-items: center; gap: 0.35rem; font-size: 0.8rem; color: var(--ian-muted); line-height: 1.4; }
.ian .ian-opt-hint svg { width: 14px; height: 14px; flex-shrink: 0; color: var(--ian-accent); }
.ian .ian-val { min-width: 2.6em; font-size: 0.78rem; font-weight: 700; color: var(--ian-text-1); font-variant-numeric: tabular-nums; }

.ian .ian-swatches { display: flex; align-items: center; gap: 0.3rem; flex-wrap: wrap; }
.ian .ian-swatch, .ian .ian-note-swatch {
    width: 26px; height: 26px; padding: 0; margin: 0; border-radius: 50%; cursor: pointer;
    background: var(--sw); border: 2px solid var(--ian-card); box-shadow: 0 0 0 1px var(--ian-line);
    transition: transform 0.12s, box-shadow 0.12s;
}
.ian .ian-swatch:hover, .ian .ian-note-swatch:hover { transform: scale(1.1); }
.ian .ian-swatch.active, .ian .ian-note-swatch.active { box-shadow: 0 0 0 2px var(--ian-accent); }
.ian .ian-color-input {
    width: 30px; height: 30px; padding: 0; margin: 0; border: 1px solid var(--ian-line); border-radius: 8px; background: none; cursor: pointer;
}

.ian .ian-seg { display: inline-flex; padding: 2px; gap: 2px; border-radius: 10px; background: var(--ian-sunk); border: 1px solid var(--ian-line); }
.ian .ian-seg > button {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.3rem; min-width: 34px; height: 32px; padding: 0 0.55rem; margin: 0;
    border: none; border-radius: 8px; background: none; color: var(--ian-text-2); font-size: 0.78rem; font-weight: 700; cursor: pointer;
}
.ian .ian-seg > button svg { width: 16px; height: 16px; }
.ian .ian-seg > button:hover { color: var(--ian-text-1); }
.ian .ian-seg > button.active { background: var(--ian-card); color: var(--ian-accent-strong); box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1); }
[data-theme="dark"] .ian .ian-seg > button.active { background: #26334a; color: var(--ian-accent); }
.ian .ian-seg-fill { display: flex; }
.ian .ian-seg-fill > button { flex: 1; height: 36px; }
.ian .ian-stroke span { display: block; width: 18px; border-radius: 4px; background: currentColor; }
.ian .ian-ico-solid { fill: currentColor; }
.ian .ian-ico-semi { fill: currentColor; fill-opacity: 0.35; }
.ian .ian-ls span { display: block; width: 22px; height: 0; border-top: 3px solid currentColor; }
.ian .ian-ls .ian-ls-dashed { border-top-style: dashed; }
.ian .ian-ls .ian-ls-dotted { border-top-style: dotted; }

.ian .ian-stamps { display: grid; grid-template-columns: repeat(8, 32px); gap: 3px; }
.ian .ian-stamp {
    display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; padding: 0; margin: 0;
    border-radius: 8px; border: 1px solid var(--ian-line); background: var(--ian-card); color: var(--ian-text-2); cursor: pointer;
}
.ian .ian-stamp svg { width: 17px; height: 17px; }
.ian .ian-stamp:hover { border-color: var(--ian-accent-line); color: var(--ian-text-1); }
.ian .ian-stamp.active { border-color: var(--ian-accent); background: var(--ian-accent-soft); color: var(--ian-accent-strong); }
[data-theme="dark"] .ian .ian-stamp.active { color: var(--ian-accent); }

.ian .ian-select, .ian .ian-input {
    height: 34px; padding: 0 0.55rem; margin: 0; border: 1px solid var(--ian-line); border-radius: 9px; box-sizing: border-box;
    background: var(--input-bg, var(--ian-card)); color: var(--ian-text-1); font-size: 0.84rem; width: auto; max-width: 100%;
}
.ian .ian-input { width: 100%; height: 40px; }
.ian .ian-select:focus, .ian .ian-input:focus { outline: none; border-color: var(--ian-accent); }

.ian .ian-range { width: 110px; max-width: 100%; margin: 0; accent-color: var(--ian-accent); cursor: pointer; }
.ian .ian-filter { display: inline-flex; align-items: center; gap: 0.45rem; cursor: default; }

/* switch (out-specifies the global checkbox skin in custom_styles.css) */
.ian .ian-switch-row { display: inline-flex; align-items: center; gap: 0.5rem; cursor: pointer; font-size: 0.84rem; font-weight: 600; color: var(--ian-text-2); margin: 0; }
.tool-container input[type="checkbox"].ian-switch {
    -webkit-appearance: none !important; appearance: none !important; position: relative !important;
    width: 38px !important; height: 22px !important; min-width: 38px !important; margin: 0 !important; padding: 0 !important;
    border-radius: 999px !important; border: 1px solid #94a3b8 !important; background: #cbd5e1 !important;
    cursor: pointer; transition: background 0.15s, border-color 0.15s; flex-shrink: 0; box-shadow: none !important;
}
.tool-container input[type="checkbox"].ian-switch::after,
.tool-container input[type="checkbox"].ian-switch:checked::after {
    content: '' !important; position: absolute !important; top: 2px !important; left: 2px !important; width: 16px !important; height: 16px !important;
    border-radius: 50% !important; background: #fff !important; border: none !important; transform: none !important;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.25) !important; transition: left 0.15s;
}
.tool-container input[type="checkbox"].ian-switch:checked { background: var(--ian-go) !important; border-color: var(--ian-go) !important; }
.tool-container input[type="checkbox"].ian-switch:checked::after { left: 18px !important; }
.tool-container input[type="checkbox"].ian-switch:focus-visible { outline: 2px solid var(--ian-accent) !important; outline-offset: 2px; }
[data-theme="dark"] .tool-container input[type="checkbox"].ian-switch:not(:checked) { background: #475569 !important; border-color: #64748b !important; }
.ian .ian-switch-state { font-size: 0.72rem; font-weight: 800; letter-spacing: 0.05em; color: var(--ian-muted); min-width: 2.2em; }
.ian .ian-switch:checked ~ .ian-switch-state { color: var(--ian-accent-strong); }
[data-theme="dark"] .ian .ian-switch:checked ~ .ian-switch-state { color: var(--ian-accent); }

/* ---------- view bar ---------- */
.ian .ian-viewbar { display: flex; align-items: center; gap: 0.25rem 0.75rem; flex-wrap: wrap; margin-top: 0.5rem; }
.ian .ian-viewbar .ian-tbtns + .ian-tbtns { padding-left: 0.6rem; border-left: 1px solid var(--ian-line); }
.ian .ian-viewbar-end { margin-left: auto; }
.ian .ian-viewbar .ian-icon-btn { width: 36px; height: 36px; }
.ian .ian-zoom-val {
    min-width: 54px; height: 32px; padding: 0 0.3rem; margin: 0; border: none; border-radius: 8px; background: none; cursor: pointer;
    font-size: 0.8rem; font-weight: 700; color: var(--ian-text-1); font-variant-numeric: tabular-nums;
}
.ian .ian-zoom-val:hover { background: var(--ian-sunk); }

/* ---------- stage ---------- */
.ian .ian-stage {
    position: relative; margin-top: 0.5rem; height: min(70vh, 720px); min-height: 320px; overflow: auto;
    border-radius: 14px; border: 1px solid var(--ian-line); background-color: var(--ian-stage);
    background-image: linear-gradient(45deg, var(--ian-checker) 25%, transparent 25%), linear-gradient(-45deg, var(--ian-checker) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, var(--ian-checker) 75%), linear-gradient(-45deg, transparent 75%, var(--ian-checker) 75%);
    background-size: 20px 20px; background-position: 0 0, 0 10px, 10px -10px, -10px 0;
    overscroll-behavior: contain;
}
.ian .ian-stage-inner { display: flex; align-items: center; justify-content: center; padding: 16px; box-sizing: border-box; min-width: 100%; min-height: 100%; }
.ian .ian-canvas-wrap { position: relative; flex-shrink: 0; box-shadow: 0 4px 18px rgba(0, 0, 0, 0.18); background: #fff; }
.ian #annotationCanvas { display: block; touch-action: none; -webkit-user-select: none; user-select: none; -webkit-touch-callout: none; }
.ian .ian-ruler-ind {
    position: absolute; top: 8px; left: 8px; display: inline-flex; align-items: center; gap: 0.35rem; padding: 0.25rem 0.6rem;
    border-radius: 999px; background: var(--ian-go); color: #fff; font-size: 0.74rem; font-weight: 700; pointer-events: none;
}
.ian .ian-ruler-ind svg { width: 14px; height: 14px; }
.ian .ian-text-input {
    position: absolute; z-index: 5; min-width: 140px; padding: 2px 4px; margin: 0; resize: none; overflow: hidden;
    border: 2px dashed var(--ian-accent); border-radius: 4px; background: rgba(255, 255, 255, 0.92); line-height: 1.2;
    white-space: pre; box-sizing: content-box; outline: none;
}
.ian .ian-text-input.is-callout { background: rgba(255, 255, 255, 0.75); white-space: pre-wrap; }
.ian .ian-note-input {
    position: absolute; z-index: 6; width: 220px; border: 2px solid #f9a825; border-radius: 8px; overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}
.ian .ian-note-head { display: flex; align-items: center; justify-content: space-between; padding: 4px 6px 4px 10px; color: #fff; font-size: 0.78rem; font-weight: 700; }
.ian .ian-note-actions { display: flex; gap: 4px; }
.ian .ian-note-actions button {
    display: inline-flex; align-items: center; justify-content: center; width: 26px; height: 26px; padding: 0; margin: 0; border: none; border-radius: 6px;
    background: rgba(255, 255, 255, 0.25); color: #fff; cursor: pointer;
}
.ian .ian-note-actions button:hover { background: rgba(255, 255, 255, 0.4); }
.ian .ian-note-actions svg { width: 15px; height: 15px; }
.ian .ian-note-text {
    display: block; width: 100%; min-height: 110px; padding: 8px 10px; margin: 0; border: none; resize: vertical;
    background: transparent; font: 13px/1.4 Arial, sans-serif; box-sizing: border-box; outline: none;
}
.ian .ian-busy {
    position: fixed; inset: 0; z-index: 9300; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0.8rem;
    background: rgba(255, 255, 255, 0.78); color: var(--ian-text-1); font-size: 0.95rem; font-weight: 700;
}
[data-theme="dark"] .ian .ian-busy { background: rgba(15, 23, 42, 0.82); }

/* ---------- action bar + dropdowns ---------- */
.ian .ian-actionbar { display: flex; align-items: center; justify-content: space-between; gap: 0.6rem; flex-wrap: wrap; margin-top: 0.9rem; }
.ian .ian-action-left, .ian .ian-action-right { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }
.ian .ian-chev { width: 15px !important; height: 15px !important; transition: transform 0.2s; }
.ian .ian-dd { position: relative; }
.ian .ian-dd.open > .ian-dd-trigger .ian-chev { transform: rotate(180deg); }
.ian .ian-dd-menu {
    display: none; position: absolute; left: 0; top: calc(100% + 6px); z-index: 30; min-width: 250px; padding: 0.35rem;
    border-radius: 12px; border: 1px solid var(--ian-line); background: var(--ian-card); box-shadow: 0 12px 32px rgba(0, 0, 0, 0.16);
}
.ian .ian-dd-up .ian-dd-menu { left: auto; right: 0; top: auto; bottom: calc(100% + 6px); }
.ian .ian-dd.open .ian-dd-menu { display: block; }
.ian .ian-dd-item {
    display: flex; align-items: center; gap: 0.55rem; width: 100%; min-height: 38px; padding: 0.4rem 0.6rem; margin: 0; border: none; border-radius: 8px;
    background: none; color: var(--ian-text-1); font-size: 0.86rem; font-weight: 600; text-align: left; cursor: pointer;
}
.ian .ian-dd-item svg { width: 16px; height: 16px; color: var(--ian-accent); flex-shrink: 0; }
.ian .ian-dd-item small { margin-left: auto; font-size: 0.74rem; font-weight: 500; color: var(--ian-muted); }
.ian .ian-dd-item:hover, .ian .ian-dd-item:focus-visible { background: var(--ian-accent-soft); outline: none; }
.ian .ian-dd-sep { height: 1px; margin: 0.3rem 0.2rem; background: var(--ian-line); }
.ian .ian-dd-note { margin: 0.3rem 0.6rem 0.35rem; font-size: 0.76rem; color: var(--ian-muted); line-height: 1.4; }
.ian .ian-tpl-list { max-height: 220px; overflow: auto; }
.ian .ian-tpl-empty { display: block; padding: 0.5rem 0.6rem; font-size: 0.8rem; color: var(--ian-muted); }
.ian .ian-tpl-row { display: flex; align-items: center; gap: 0.25rem; }
.ian .ian-tpl-name {
    flex: 1; min-width: 0; padding: 0.45rem 0.6rem; margin: 0; border: none; border-radius: 8px; background: none; text-align: left;
    color: var(--ian-text-1); font-size: 0.84rem; cursor: pointer; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.ian .ian-tpl-name:hover { background: var(--ian-accent-soft); }
.ian .ian-tpl-del {
    width: 28px; height: 28px; padding: 0; margin: 0; border: none; border-radius: 7px; background: none; color: var(--ian-muted);
    font-size: 16px; cursor: pointer; flex-shrink: 0;
}
.ian .ian-tpl-del:hover { color: #e64e4e; background: rgba(230, 78, 78, 0.1); }

/* ---------- export settings (collapsed rows) ---------- */
.ian .ian-adv { margin-top: 0.9rem; border: 1px solid var(--ian-line); border-radius: 12px; overflow: hidden; background: var(--ian-card); }
.ian .ian-adv-row + .ian-adv-row { border-top: 1px solid var(--ian-line); }
.ian .ian-adv-head {
    display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; width: 100%; min-height: 54px;
    padding: 0.55rem 1rem; margin: 0; border: none; background: none; cursor: pointer; text-align: left; color: var(--ian-text-1);
}
.ian .ian-adv-left { display: flex; align-items: center; gap: 0.65rem; min-width: 0; }
.ian .ian-adv-left > svg { width: 18px; height: 18px; color: var(--ian-accent); flex-shrink: 0; }
.ian .ian-adv-text { display: flex; flex-direction: column; min-width: 0; }
.ian .ian-adv-title { font-size: 0.9rem; font-weight: 700; }
.ian .ian-adv-hint { font-size: 0.76rem; color: var(--ian-muted); line-height: 1.35; }
.ian .ian-adv-right { display: flex; align-items: center; gap: 0.5rem; flex-shrink: 0; }
.ian .ian-adv-value {
    max-width: 140px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; padding: 0.2rem 0.55rem; border-radius: 999px;
    background: var(--ian-accent-soft); color: var(--ian-accent-strong); font-size: 0.76rem; font-weight: 700;
}
[data-theme="dark"] .ian .ian-adv-value { color: var(--ian-accent); }
.ian .ian-adv-row .ian-chev { color: var(--ian-muted); }
.ian .ian-adv-row.open .ian-chev { transform: rotate(180deg); }
.ian .ian-adv-row.open .ian-adv-head, .ian .ian-adv-row.open .ian-adv-body { background: var(--ian-open); }
.ian .ian-adv-body { padding: 0.2rem 1rem 1rem; }
.ian .ian-sl { display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; font-size: 0.84rem; font-weight: 600; color: var(--ian-text-2); }
.ian .ian-sl .ian-range { flex: 1 1 160px; width: auto; }

.ian .ian-next { margin-top: 0.9rem; display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; }
.ian .ian-next-links { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.ian .ian-next-link {
    display: inline-flex; align-items: center; gap: 0.35rem; padding: 0.4rem 0.8rem; border-radius: 999px;
    border: 1px solid var(--ian-line); background: var(--ian-card); color: var(--ian-text-2); font-size: 0.82rem; font-weight: 600; text-decoration: none;
}
.ian .ian-next-link svg { width: 14px; height: 14px; color: var(--ian-accent); }
.ian .ian-next-link:hover { border-color: var(--ian-accent-line); color: var(--ian-text-1); }

/* ---------- shortcuts modal ---------- */
.ian .ian-modal {
    position: fixed; inset: 0; z-index: 9400; display: flex; align-items: center; justify-content: center; padding: 16px;
    background: rgba(15, 23, 42, 0.55);
}
.ian .ian-modal-panel {
    width: min(860px, 100%); max-height: calc(100vh - 32px); overflow: auto; border-radius: 18px;
    background: var(--ian-card); border: 1px solid var(--ian-line); box-shadow: 0 24px 60px rgba(0, 0, 0, 0.3);
}
.ian .ian-modal-head { display: flex; align-items: center; justify-content: space-between; padding: 0.9rem 1.1rem; border-bottom: 1px solid var(--ian-line); }
.ian .ian-modal-head h3 { display: flex; align-items: center; gap: 0.5rem; margin: 0; font-size: 1.05rem; color: var(--ian-text-1); }
.ian .ian-modal-head h3 svg { width: 20px; height: 20px; color: var(--ian-accent); }
.ian .ian-modal-body { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem 1.25rem; padding: 1rem 1.1rem 1.2rem; }
.ian .ian-kcol { min-width: 0; }
.ian .ian-kcol h4 { margin: 0 0 0.5rem; font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ian-muted); }
.ian .ian-kcol dl { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 0.35rem 0.6rem; margin: 0; align-items: center; }
.ian .ian-kcol dt { margin: 0; white-space: nowrap; }
.ian .ian-kcol dd { margin: 0; font-size: 0.82rem; color: var(--ian-text-2); }

/* ---------- content ---------- */
.ian .ian-info { margin-top: 2rem; display: grid; grid-template-columns: minmax(0, 1fr); gap: 1.25rem; }
.ian .ian-info > * { min-width: 0; }
.ian .ian-info .info-card {
    background: var(--bg-elevated, #fff); border: 1px solid var(--ian-line); border-radius: var(--radius-md, 12px);
    padding: 1.4rem 1.5rem; box-shadow: none; margin: 0;
}
.ian .ian-info .info-card h2 { display: flex; align-items: center; gap: 0.55rem; margin: 0 0 0.9rem; font-size: 1.25rem; color: var(--ian-text-1); }
.ian .ian-info .info-card h2 svg { width: 22px; height: 22px; color: var(--ian-accent); flex-shrink: 0; }
.ian .ian-info .info-card p, .ian .ian-info .info-card li { color: var(--ian-text-2); line-height: 1.65; font-size: 0.97rem; }
.ian .ian-info .info-card p { margin: 0.7rem 0 0; }
.ian .ian-info .info-card h2 + p { margin-top: 0; }
.ian .ian-info a { color: var(--ian-accent-strong); font-weight: 500; }
[data-theme="dark"] .ian .ian-info a { color: var(--ian-accent); }
.ian .ian-list { margin: 0; padding-left: 1.3rem; display: grid; gap: 0.45rem; }
.ian .ian-list { margin-top: 0.8rem; }
.ian .ian-tip { display: flex; gap: 0.5rem; align-items: flex-start; padding: 0.75rem 0.9rem; border-radius: 12px; background: var(--ian-accent-soft); border: 1px solid var(--ian-accent-line); }
.ian .ian-info .ian-tip { margin-top: 1rem; }
.ian .ian-tip > svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 3px; color: var(--ian-accent); }
.ian .ian-tools-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.75rem; margin-top: 1rem; }
.ian .ian-tool-card { display: flex; gap: 0.75rem; padding: 0.9rem; border-radius: 12px; border: 1px solid var(--ian-line); background: var(--ian-sunk); min-width: 0; }
.ian .ian-tool-ico { width: 38px; height: 38px; border-radius: 10px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; background: var(--ian-card); color: var(--ian-accent); border: 1px solid var(--ian-line); }
.ian .ian-tool-ico svg { width: 20px; height: 20px; }
.ian .ian-tool-card h3 { margin: 0 0 0.2rem; font-size: 0.98rem; color: var(--ian-text-1); }
.ian .ian-info .ian-tool-card p { margin: 0; font-size: 0.88rem; line-height: 1.55; }
.ian .ian-uses { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.75rem; }
.ian .ian-use { padding: 0.9rem 1rem; border-radius: 12px; border: 1px solid var(--ian-line); background: var(--ian-sunk); min-width: 0; }
.ian .ian-use-tag {
    display: inline-block; padding: 0.15rem 0.6rem; border-radius: 999px; background: var(--ian-accent-soft); color: var(--ian-accent-strong);
    font-size: 0.74rem; font-weight: 800; letter-spacing: 0.03em;
}
[data-theme="dark"] .ian .ian-use-tag { color: var(--ian-accent); }
.ian .ian-info .ian-use p { margin: 0.5rem 0 0; font-size: 0.9rem; }
.ian .ian-table-wrap { overflow-x: auto; margin-top: 0.9rem; border: 1px solid var(--ian-line); border-radius: 10px; }
.ian .ian-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.ian .ian-table th, .ian .ian-table td { padding: 0.55rem 0.8rem; text-align: left; border-bottom: 1px solid var(--ian-line); color: var(--ian-text-2); vertical-align: top; }
.ian .ian-table th { background: var(--ian-sunk); color: var(--ian-text-1); font-weight: 700; font-size: 0.82rem; }
.ian .ian-table tr:last-child td { border-bottom: none; }
.ian .ian-table td:first-child { font-weight: 700; color: var(--ian-text-1); white-space: nowrap; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.84rem; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
    .ian .ian-modal-body { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .ian .ian-viewbar-end { margin-left: 0; }
}
@media (max-width: 640px) {
    .ian.tool-container { padding: 1.1rem 16px; }
    .ian .tool-title { font-size: 1.6rem; }
    .ian .ian-title-icon { width: 46px; height: 46px; border-radius: 13px; }
    .ian .ian-title-icon svg { width: 25px; height: 25px; }
    .ian .tool-description { font-size: 0.98rem; }
    .ian .ian-card { padding: 0.9rem; border-radius: 16px; }
    .ian .ian-editor { padding: 0.65rem; }
    .ian .ian-drop { min-height: 190px; }
    .ian .ian-under-links { margin-left: 0; }
    .ian .ian-preset span { display: none; }
    .ian .ian-preset { padding: 0.35rem; }
    .ian .ian-toolbar { padding: 0.35rem; }
    .ian .ian-tgroup { padding: 0 0.2rem; }
    .ian .ian-tgroup-label { display: none; }
    .ian .ian-tgroup + .ian-tgroup { border-left: none; }
    .ian .ian-tool { width: 38px; height: 38px; }
    .ian .ian-options { gap: 0.5rem 0.75rem; padding: 0.5rem; }
    .ian .ian-stamps { grid-template-columns: repeat(8, 30px); }
    .ian .ian-stamp { width: 30px; height: 30px; }
    .ian .ian-range { width: 96px; }
    .ian .ian-stage { height: 62vh; min-height: 280px; }
    .ian .ian-viewbar .ian-tbtns + .ian-tbtns { padding-left: 0.35rem; }
    .ian .ian-actionbar { justify-content: flex-start; }
    .ian .ian-action-left .ian-btn span { display: none; }
    .ian .ian-action-left .ian-btn { padding: 0.5rem 0.7rem; }
    .ian .ian-action-right { width: 100%; }
    .ian .ian-action-right > .ian-btn, .ian .ian-action-right > .ian-dd { flex: 1; }
    .ian .ian-action-right .ian-dd-trigger { width: 100%; }
    .ian .ian-dd-menu { min-width: 0; width: min(280px, calc(100vw - 48px)); }
    .ian .ian-adv-head { padding: 0.55rem 0.8rem; }
    .ian .ian-adv-hint { display: none; }
    .ian .ian-tools-grid, .ian .ian-uses { grid-template-columns: minmax(0, 1fr); }
    .ian .ian-modal-body { grid-template-columns: minmax(0, 1fr); }
    .ian .ian-info .info-card { padding: 1.1rem; }
    .ian .ian-table td:first-child { white-space: normal; }
}
@media (max-width: 380px) {
    .ian .ian-stamps { grid-template-columns: repeat(6, 30px); }
}
.ian .ian-editor { scroll-margin-top: 72px; }

/* Stable options bar: the canvas below must not jump when the tool changes */
@media (min-width: 641px) {
    .ian .ian-options { min-height: 104px; align-content: center; }
}
@media (min-width: 641px) and (max-width: 1100px) {
    .ian .ian-options { min-height: 128px; }
}
@media (max-width: 640px) {
    .ian .ian-options { flex-wrap: nowrap; overflow-x: auto; overflow-y: hidden; min-height: 60px; scrollbar-width: thin; -webkit-overflow-scrolling: touch; }
    .ian .ian-opt { flex-wrap: nowrap; flex-shrink: 0; }
    .ian #selectHintGroup, .ian #eraserGroup { flex-shrink: 1; min-width: 0; }
    .ian .ian-opt-hint { white-space: normal; }
    .ian #blurGroup .ian-opt-hint { min-width: 200px; }
    .ian .ian-stamps { display: flex; }
    .ian .ian-filter { flex-shrink: 0; }
}
.ian .ian-viewbar .ian-tbtns { flex-wrap: nowrap; flex-shrink: 0; }
@media (max-width: 640px) {
    .ian .ian-toolbar { gap: 2px; justify-content: space-between; }
    .ian .ian-toolbar .ian-tgroup, .ian .ian-toolbar .ian-tbtns { display: contents; }
    .ian .ian-tool { width: 40px; height: 40px; }
    .ian .ian-viewbar { gap: 0.25rem 0.5rem; }
    .ian .ian-viewbar .ian-icon-btn { width: 34px; height: 34px; }
    .ian .ian-viewbar .ian-tbtns + .ian-tbtns { border-left: none; padding-left: 0; }
}

/* Shared steps list + FAQ (main CSS) follow the tool accent (2026-10-11) */
.ian.tool-container { --tool-accent: var(--ian-accent, #3399cc); }