/* Shared frontend design tokens and accessible feedback/components. */
:root {
    --seo-color-primary: var(--accent-1, #0ea5e9);
    --seo-color-success: var(--accent-3, #10b981);
    --seo-color-warning: #a16207;
    --seo-color-danger: var(--accent-danger, #ef4444);
    --seo-color-text: var(--text-dark, #0f172a);
    --seo-color-muted: var(--text-muted, #64748b);
    --seo-color-surface: var(--bg-surface, #fff);
    --seo-color-border: var(--border-light, #cbd5e1);
    --seo-space-1: 4px;
    --seo-space-2: 8px;
    --seo-space-3: 12px;
    --seo-space-4: 16px;
    --seo-space-6: 24px;
    --seo-space-8: 32px;
    --seo-radius: var(--radius-md, 12px);
    --seo-shadow: var(--shadow-lg, 0 10px 15px -3px rgb(0 0 0 / 5%));
    --seo-font: var(--font-family, Inter, system-ui, sans-serif);
}

:where(button, a, input, select, textarea, [tabindex]):focus-visible {
    outline: 3px solid #0ea5e9 !important;
    outline-offset: 2px !important;
}

:where(button, input, select, textarea):disabled,
[aria-disabled="true"] {
    cursor: not-allowed !important;
    opacity: .58 !important;
}

.seo-toast-region {
    position: fixed;
    z-index: 10000;
    inset: 1rem 1rem auto auto;
    display: grid;
    gap: .5rem;
    width: min(26rem, calc(100vw - 2rem));
}
.seo-toast {
    line-height: 1.45;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: .75rem;
    padding: .85rem 1rem;
    color: var(--seo-color-text);
    background: var(--seo-color-surface);
    border: 1px solid var(--seo-color-border);
    border-left: 4px solid var(--seo-color-primary);
    border-radius: var(--seo-radius);
    box-shadow: var(--seo-shadow);
}
.seo-toast-error { border-left-color: var(--seo-color-danger); }
.seo-toast-success { border-left-color: var(--seo-color-success); }
.seo-toast-warning { border-left-color: var(--seo-color-warning); }
.seo-toast-close { border: 0; background: transparent; font-size: 1.25rem; cursor: pointer; }
.seo-field-error { color: var(--seo-color-danger); font-size: .875rem; margin-top: .25rem; }
[aria-invalid="true"] { border-color: var(--seo-color-danger) !important; }
.seo-skeleton { display: grid; gap: .6rem; padding: 1rem; }
.seo-skeleton-line { height: .8rem; max-width: 100%; border-radius: 99px; background: linear-gradient(90deg,#e2e8f0,#f8fafc,#e2e8f0); background-size: 200% 100%; animation: seo-shimmer 1.2s infinite; }
.seo-skeleton-line:nth-child(2) { max-width: 72%; }
.seo-skeleton-caption { color: var(--seo-color-muted); font-size: .875rem; }
@keyframes seo-shimmer { to { background-position: -200% 0; } }
.tree-tools-extra { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; margin: .75rem 0; }
.tree-tools-extra input, .tree-tools-extra select { min-height: 36px; padding: .4rem .6rem; border: 1px solid var(--seo-color-border); border-radius: .4rem; }
.node-no-cluster { border-left: 3px solid var(--seo-color-warning) !important; }
.save-status { color: var(--seo-color-muted); font-size: .875rem; }
.seo-task-error { color: var(--seo-color-danger); font-size: .8rem; }
.seo-generation-prerequisite { max-width: 44rem; margin: 12px auto; padding: 16px; text-align: left; color: var(--text-main, #334155); background: var(--bg-surface, #fff); border: 1px solid var(--border-light, #e2e8f0); border-radius: var(--radius-md, 12px); }
.seo-generation-prerequisite strong { display: block; margin-bottom: 8px; color: var(--text-dark, #0f172a); }
.seo-generation-prerequisite p { max-width: 70ch; margin-bottom: 12px; line-height: 1.5; }
.seo-generation-prerequisite .btn { display: inline-flex; align-items: center; min-height: 40px; margin: 4px 8px 4px 0; padding: 0 12px; border-radius: 8px; text-decoration: none; }
.seo-task-history-fab { position: fixed; z-index: 8999; right: 1rem; bottom: 1rem; min-height: 44px; padding: .65rem .9rem; color: #fff; background: var(--seo-color-primary); border: 0; border-radius: 999px; box-shadow: var(--seo-shadow); cursor: pointer; }
.seo-task-panel { position: fixed; z-index: 9000; right: 1rem; bottom: 1rem; width: min(25rem, calc(100vw - 2rem)); max-height: 55vh; overflow: auto; color: var(--seo-color-text); background: var(--seo-color-surface); border: 1px solid var(--seo-color-border); border-radius: var(--seo-radius); box-shadow: var(--seo-shadow); }
.seo-task-panel.collapsed [data-task-list] { display: none; }
.seo-task-panel:not(.collapsed) ~ .seo-task-history-fab { display: none; }
.seo-task-panel-head, .seo-task-actions { display: flex; align-items: center; justify-content: flex-end; gap: .5rem; padding: .6rem; }
.seo-task-panel-head strong { margin-right: auto; }
.seo-task-panel button { min-height: 36px; cursor: pointer; }
.seo-task-row { padding: .75rem; border-top: 1px solid var(--seo-color-border); }
.seo-task-title { font-weight: 600; line-height: 1.2; letter-spacing: -0.01em; }
.seo-task-status, .seo-task-empty { color: var(--seo-color-muted); font-size: .875rem; margin: .35rem 0; }
.seo-task-row progress { width: 100%; height: .7rem; accent-color: var(--seo-color-primary); }
.seo-confirm-dialog { max-width: min(28rem, calc(100vw - 2rem)); border: 0; border-radius: var(--seo-radius); box-shadow: var(--seo-shadow); padding: 1.25rem; color: var(--seo-color-text); }
.seo-confirm-dialog::backdrop { background: rgb(15 23 42 / 55%); }
.seo-confirm-actions { display: flex; justify-content: flex-end; gap: .5rem; margin-top: 1.25rem; }
.btn-danger { background: var(--seo-color-danger); color: #fff; }

@media (max-width: 768px) {
    .seo-toast-region { inset: .5rem .5rem auto; width: auto; }
    .seo-confirm-actions { flex-direction: column-reverse; }
    .seo-confirm-actions button { width: 100%; min-height: 44px; }
}
@media (max-width: 320px) {
    .seo-toast { padding: .65rem; font-size: .9rem; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}