* { box-sizing: border-box; }
html, body { width: 100%; height: 100%; margin: 0; overflow: hidden; }
body { background: var(--color-bg); color: var(--color-text); font: 400 var(--text-md)/1.45 var(--font-ui); -webkit-font-smoothing: antialiased; }
button, input, select, output { font: inherit; }
button, select, input { color: inherit; }
button { touch-action: manipulation; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
:focus-visible { outline: none; box-shadow: var(--focus-ring); }

.app-shell { display: grid; grid-template-rows: var(--toolbar-height) 1fr var(--status-height); width: 100%; height: 100%; min-width: 320px; background: var(--color-bg); }
.toolbar { position: relative; z-index: 30; display: flex; align-items: center; gap: 12px; padding: 10px 12px; background: var(--color-surface); border-bottom: 1px solid var(--color-border); }
.brand { display: flex; align-items: center; gap: 10px; font-size: 16px; font-weight: 600; letter-spacing: -.018em; white-space: nowrap; }
.statusbar svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.55; stroke-linecap: round; }
.toolbar-section, .toolbar-group { display: flex; align-items: center; }
.toolbar-section { gap: 8px; }
.toolbar-group { gap: 6px; }
.toolbar-divider { width: 1px; height: 22px; margin-inline: 2px; background: var(--color-border); }
.toolbar-history-actions, .toolbar-view-actions { gap: 2px; padding: 2px; background: rgba(255, 255, 255, .018); border: 1px solid var(--color-border); border-radius: 10px; }
.toolbar-history-actions .icon-button { width: 28px; height: 28px; padding: 5px; }
.toolbar-view-actions .button { min-height: 28px; padding: 4px 10px; background: transparent; border-color: transparent; }
.toolbar-view-actions .button:hover { background: rgba(255, 255, 255, .05); border-color: transparent; }
.toolbar-spacer { flex: 1; }
.toolbar-ai { display: inline-flex; align-items: center; gap: 7px; }
.toolbar-ai svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }

.button, .icon-button, select, input[type="text"], input[type="number"] { border: 1px solid var(--color-border); border-radius: var(--radius-md); background: rgba(255, 255, 255, .035); transition: color var(--motion-fast) ease, background-color var(--motion-fast) ease, border-color var(--motion-fast) ease, opacity var(--motion-fast) ease; }
.button { min-height: 34px; padding: 6px 12px; }
.button, .icon-button, .text-button { cursor: pointer; }
.button:hover, .icon-button:hover { background: rgba(255, 255, 255, .065); border-color: var(--color-border-strong); }
.button:active, .icon-button:active { background: rgba(255, 255, 255, .045); }
.button:disabled, .icon-button:disabled { opacity: .32; cursor: default; }
.button-primary { color: var(--color-accent-text); background: var(--color-accent); border-color: transparent; font-weight: 600; }
.button-primary:hover { background: var(--color-accent-hover); border-color: transparent; }
.button-primary:active { background: var(--color-accent-active); }
.button-danger { color: #f3a4a7; border-color: rgba(228, 108, 112, .34); }
.button-wide { width: 100%; margin-top: 12px; }
.icon-button { display: inline-grid; place-items: center; width: 34px; height: 34px; padding: 7px; }
.icon-button svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.toolbar .button[aria-pressed="true"] { color: #d9d1ff; background: var(--color-accent-soft); border-color: var(--color-accent-border); }
.toolbar #undo, .toolbar #redo { color: var(--color-text-muted); background: transparent; border-color: transparent; }
.toolbar #undo:hover:not(:disabled), .toolbar #redo:hover:not(:disabled) { color: var(--color-text); background: rgba(255, 255, 255, .05); }
.text-button { padding: 3px 4px; border: 0; background: transparent; color: var(--color-text-faint); font-size: var(--text-xs); transition: color var(--motion-fast) ease; }
.text-button:hover { color: var(--color-text-muted); }

.status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--color-success); }
.ai-connectivity-status.is-offline .status-dot { background: var(--color-warning); }
.tools-toggle, .inspector-close { display: none; }

.workspace { display: grid; grid-template-columns: minmax(0, 1fr) var(--inspector-width); min-height: 0; background: var(--color-bg); }
.editor-column { position: relative; display: grid; grid-template-rows: minmax(0, 1fr) var(--filmstrip-height); min-width: 0; min-height: 0; }
.inspector { display: flex; flex-direction: column; min-height: 0; overflow: auto; background: var(--color-surface); border-left: 1px solid var(--color-border); scrollbar-color: var(--color-border-strong) transparent; scrollbar-width: thin; }
.inspector-header { display: none; }

.statusbar { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 20px; padding: 0 16px; background: #0d0f13; border-top: 1px solid var(--color-border); color: var(--color-text-faint); font-size: var(--text-xs); }
.status-legal { display: flex; align-items: center; gap: 7px; white-space: nowrap; }
.status-legal > a { color: var(--color-text-faint); text-decoration: none; transition: color var(--motion-fast) ease; }
.status-legal > a:hover { color: var(--color-text-muted); }
.privacy-status { display: inline-flex; align-items: center; gap: 7px; color: var(--color-text-muted) !important; }
.privacy-status svg { width: 14px; height: 14px; }
.status-version { justify-self: end; padding: 2px 4px; color: inherit; background: transparent; border: 0; border-radius: 5px; cursor: pointer; font-variant-numeric: tabular-nums; transition: color var(--motion-fast) ease, background-color var(--motion-fast) ease; }
.status-version:hover { color: var(--color-text-muted); background: rgba(255, 255, 255, .04); }
.status-version:disabled { opacity: .45; cursor: wait; }

.toast, .update-toast { position: fixed; left: 50%; bottom: 52px; z-index: 100; transform: translateX(-50%); max-width: min(520px, calc(100vw - 28px)); padding: 11px 14px; color: var(--color-text); background: var(--color-surface-raised); border: 1px solid var(--color-border-strong); border-radius: 10px; box-shadow: 0 12px 32px rgba(0, 0, 0, .38); }
.update-toast { display: flex; align-items: center; gap: 14px; }
.app-tooltip { position: fixed; z-index: 250; max-width: min(240px, calc(100vw - 16px)); padding: 5px 8px; color: var(--color-text); background: #1d2027; border: 1px solid var(--color-border-strong); border-radius: var(--radius-sm); box-shadow: 0 5px 14px rgba(0, 0, 0, .28); font-size: var(--text-xs); line-height: 1.3; text-align: center; pointer-events: none; opacity: 0; transform: translateY(2px); transition: opacity 120ms ease, transform 120ms ease; }
.app-tooltip.is-visible { opacity: 1; transform: translateY(0); }

dialog { width: min(520px, calc(100vw - 24px)); padding: 0; color: var(--color-text); background: var(--color-surface-raised); border: 1px solid var(--color-border-strong); border-radius: var(--radius-lg); box-shadow: 0 20px 56px rgba(0, 0, 0, .52); }
dialog::backdrop { background: rgba(0, 0, 0, .68); }
dialog form { margin: 0; }
.dialog-header { display: flex; align-items: center; justify-content: space-between; padding: 16px; border-bottom: 1px solid var(--color-border); }
.dialog-header h2 { margin: 0; font-size: var(--text-lg); font-weight: 600; }
dialog > form > p, .check-list, .form-grid, .project-list { margin: 18px; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; padding: 14px 16px; border-top: 1px solid var(--color-border); }
.check-list { display: grid; gap: 12px; padding: 0; border: 0; }
.check-list label, .checkbox-row { display: flex; align-items: center; gap: 10px; }
input[type="checkbox"] { accent-color: var(--color-accent); }
.form-grid { display: grid; gap: 16px; }
.form-grid > label, .dimension-fields > label { display: grid; grid-template-columns: 130px 1fr; align-items: center; gap: 12px; }
.form-grid select, .form-grid input[type="text"], .form-grid input[type="number"] { width: 100%; min-height: 34px; padding: 6px 9px; }
.export-targets { margin: 0; padding: 0 0 14px; border-bottom: 1px solid var(--color-border); }
.export-targets legend { margin-bottom: 8px; color: var(--color-text-muted); font-size: var(--text-sm); }
.export-targets small { margin-left: auto; color: var(--color-text-muted); font-variant-numeric: tabular-nums; }
.dimension-fields { display: grid; gap: 8px; }
.notice { padding: 11px 12px; color: var(--color-text-muted); background: rgba(255, 255, 255, .025); border-left: 2px solid var(--color-accent); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; font-size: var(--text-sm); }
.metadata-notice { display: grid; gap: 3px; }
.metadata-notice strong { color: var(--color-text); font-weight: 600; }
.export-progress { margin: 18px; }
.export-progress progress { width: 100%; accent-color: var(--color-accent); }
.export-progress ul { max-height: 90px; overflow: auto; color: var(--color-danger); font-size: var(--text-xs); }
.project-list { display: grid; gap: 8px; min-height: 80px; max-height: 360px; overflow: auto; }
.project-row { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; padding: 11px 12px; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: rgba(255, 255, 255, .025); color: inherit; text-align: left; cursor: pointer; transition: background-color var(--motion-fast) ease, border-color var(--motion-fast) ease; }
.project-row:hover { background: var(--color-surface-hover); border-color: var(--color-border-strong); }
.project-row small { color: var(--color-text-muted); }
.preset-save-body, .preset-dialog-body, .text-input-body { display: grid; gap: 18px; margin: 18px; }
.preset-name, .text-input-field { display: grid; grid-template-columns: 130px 1fr; align-items: center; gap: 12px; }
.preset-name input, .text-input-field input { width: 100%; min-height: 34px; padding: 6px 9px; }
.preset-save-body .check-list, .preset-dialog-body .check-list { margin: 0; }
.check-list legend { margin-bottom: 10px; color: var(--color-text-muted); font-size: var(--text-sm); }
.preset-list { display: grid; gap: 8px; max-height: 280px; overflow: auto; }
.preset-row { display: grid; gap: 3px; width: 100%; padding: 11px 12px; color: inherit; text-align: left; background: rgba(255, 255, 255, .025); border: 1px solid var(--color-border); border-radius: var(--radius-md); cursor: pointer; transition: background-color var(--motion-fast) ease, border-color var(--motion-fast) ease; }
.preset-row:hover { background: var(--color-surface-hover); border-color: var(--color-border-strong); }
.preset-row[aria-pressed="true"] { background: var(--color-accent-soft); border-color: var(--color-accent-border); }
.preset-row strong { font-weight: 600; }
.preset-row small, .preset-empty, .preset-target-count { color: var(--color-text-muted); }
.preset-empty, .preset-target-count { margin: 0; }
.preset-target-count { font-size: var(--text-sm); }
.settings-dialog { width: min(820px, calc(100vw - 24px)); }
.settings-dialog form { display: grid; grid-template-rows: auto minmax(0, 1fr); height: min(680px, calc(100dvh - 32px)); }
.settings-layout { display: grid; grid-template-columns: 190px minmax(0, 1fr); min-height: 480px; overflow: hidden; }
.settings-navigation { display: flex; flex-direction: column; gap: 3px; padding: 14px 10px; background: rgba(0, 0, 0, .14); border-right: 1px solid var(--color-border); }
.settings-nav-item { display: flex; align-items: center; gap: 10px; width: 100%; min-height: 38px; padding: 8px 10px; color: var(--color-text-muted); background: transparent; border: 0; border-radius: var(--radius-md); text-align: left; cursor: pointer; transition: color var(--motion-fast) ease, background-color var(--motion-fast) ease; }
.settings-nav-item:hover { color: var(--color-text); background: rgba(255, 255, 255, .04); }
.settings-nav-item[aria-current="page"] { color: #ded8ff; background: var(--color-accent-soft); }
.settings-nav-item svg { flex: none; width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.settings-content { min-width: 0; overflow: auto; }
.settings-section { padding: 24px; }
.settings-section > h3 { margin: 0 0 6px; font-size: var(--text-lg); font-weight: 600; }
.settings-description { max-width: 580px; margin: 0 0 24px; color: var(--color-text-muted); }
.settings-row { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 60px; padding: 12px 0; border-top: 1px solid var(--color-border); }
.settings-row > span { display: grid; gap: 3px; }
.settings-row strong { font-weight: 500; }
.settings-row small { color: var(--color-text-muted); }
.settings-row select { min-width: 150px; min-height: 34px; padding: 6px 30px 6px 10px; }
.settings-subsection { margin-top: 28px; }
.settings-subsection > h4 { margin: 0 0 5px; font-size: var(--text-md); font-weight: 600; }
.settings-subsection > .settings-description { margin-bottom: 8px; font-size: var(--text-sm); }
.settings-text-row input { width: min(240px, 50%); min-height: 34px; padding: 6px 9px; }
.settings-section .ai-package-body { margin: 0; }
.ai-connectivity-status { display: flex; align-items: center; gap: 7px; min-height: 34px; padding: 7px 10px; color: var(--color-text-muted); background: rgba(255, 255, 255, .025); border: 1px solid var(--color-border); border-radius: var(--radius-md); font-size: var(--text-sm); }
.ai-connectivity-status .connectivity-state { color: var(--color-text); font-weight: 500; }
.ai-package-summary { display: flex; justify-content: space-between; padding: 12px 0; border-block: 1px solid var(--color-border); }
.ai-package-summary .is-ready { color: var(--color-success); }
.ai-package-body h3 { margin: 20px 0 4px; font-size: 13px; font-weight: 600; }
.ai-package-actions { display: flex; justify-content: flex-end; gap: 8px; }
.model-list { display: grid; gap: 10px; padding: 0; list-style: none; }
.model-list li { display: flex; justify-content: space-between; gap: 16px; }
.model-list small { color: var(--color-text-muted); text-align: right; }
.inline-progress { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 6px 10px; margin-top: 10px; color: var(--color-text-muted); font-size: var(--text-xs); }
.inline-progress progress { grid-column: 1 / -1; width: 100%; accent-color: var(--color-accent); }
.settings-about { text-align: center; }
.settings-about-logo { display: block; width: 96px; height: 96px; margin: 16px auto 18px; border-radius: 22px; }
.settings-about .settings-description { margin-inline: auto; }
.settings-about-details { max-width: 420px; margin: 28px auto 0; text-align: left; }
.settings-about-details > div { display: flex; justify-content: space-between; gap: 20px; padding: 11px 0; border-top: 1px solid var(--color-border); }
.settings-about-details dt { color: var(--color-text-muted); }
.settings-about-details dd { margin: 0; }
.settings-about-details a { color: #c7bdff; text-decoration-color: rgba(199, 189, 255, .42); text-underline-offset: 2px; transition: color var(--motion-fast) ease, text-decoration-color var(--motion-fast) ease; }
.settings-about-details a:hover { color: #e0daff; text-decoration-color: currentColor; }
.settings-privacy { max-width: 420px; margin: 24px auto 0; padding: 12px; color: var(--color-text-muted); background: rgba(255, 255, 255, .025); border-radius: var(--radius-md); font-size: var(--text-sm); }
.settings-legal-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 16px; max-width: 420px; margin: 16px auto 0; font-size: var(--text-sm); }
.settings-legal-links a { color: #c7bdff; text-underline-offset: 3px; }

@media (prefers-reduced-motion: no-preference) { .toast, .update-toast { animation: toast-in var(--motion-fast) ease-out; } }
@keyframes toast-in { from { opacity: 0; transform: translate(-50%, 6px); } }