@font-face { font-family: 'Be Vietnam Pro'; src: url('fonts/BeVietnamPro-Regular.ttf') format('truetype'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Be Vietnam Pro'; src: url('fonts/BeVietnamPro-Medium.ttf') format('truetype'); font-weight: 500; font-display: swap; }
@font-face { font-family: 'Be Vietnam Pro'; src: url('fonts/BeVietnamPro-SemiBold.ttf') format('truetype'); font-weight: 600 900; font-display: swap; }

:root {
    --ui-primary: #0f766e;
    --ui-primary-hover: #115e59;
    --ui-bg: #f8fafc;
    --ui-surface: #ffffff;
    --ui-text: #0f172a;
    --ui-muted: #475569;
    --ui-review: #92400e;
    --ui-error: #b91c1c;
    --ui-border: #cbd5e1;
    --ui-selected: #f0fdfa;
    --ui-space-1: 8px;
    --ui-space-2: 16px;
    --ui-space-3: 24px;
    --ui-space-4: 32px;
    --ui-font: 'Be Vietnam Pro', sans-serif;
    --ui-radius: 16px;
    --ui-target: 44px;
}

.ui-page, .ui-dialog { font: 400 16px/1.6 var(--ui-font); color: var(--ui-text); }
.ui-page { margin: 0; background: var(--ui-bg); min-height: 100vh; }
.ui-page *, .ui-dialog * { box-sizing: border-box; }
.ui-shell { width: min(1120px, calc(100% - 32px)); margin-inline: auto; }
.ui-header { background: var(--ui-surface); border-bottom: 1px solid var(--ui-border); padding-block: var(--ui-space-2); }
.ui-row { display: flex; flex-wrap: wrap; align-items: center; gap: var(--ui-space-2); }
.ui-between { justify-content: space-between; }
.ui-brand { color: var(--ui-primary); text-decoration: none; font-weight: 600; min-height: 44px; display: inline-flex; align-items: center; }
.ui-nav { display: flex; flex-wrap: wrap; gap: var(--ui-space-1); }
.ui-btn.ui-menu { display: none; }
.ui-page h1, .ui-page h2, .ui-page h3, .ui-dialog h2 { font-weight: 600; line-height: 1.4; margin: 0 0 var(--ui-space-2); color: var(--ui-text); }
.ui-page h1 { font-size: clamp(24px, 3vw, 28px); }
.ui-page h2, .ui-dialog h2 { font-size: 24px; }
.ui-page h3 { font-size: 18px; }
.ui-page p { margin: 0 0 var(--ui-space-2); }
.ui-muted, .ui-hint { color: var(--ui-muted); }
.ui-hint, .ui-badge, .ui-kicker { font-size: 14px; }
.ui-kicker { color: var(--ui-primary); font-weight: 600; }
.ui-section { padding-block: var(--ui-space-4); scroll-margin-top: 16px; }
.ui-stack { display: grid; gap: var(--ui-space-2); }
.ui-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--ui-space-3); }
.ui-grid--two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.ui-card { border: 1px solid var(--ui-border); border-radius: var(--ui-radius); background: var(--ui-surface); padding: var(--ui-space-3); min-width: 0; overflow-wrap: anywhere; }
.ui-btn { display: inline-flex; justify-content: center; align-items: center; gap: var(--ui-space-1); min-height: var(--ui-target); min-width: var(--ui-target); padding: 8px 16px; border: 1px solid var(--ui-border); border-radius: 8px; background: var(--ui-surface); color: var(--ui-text); font: 500 16px/1.5 var(--ui-font); text-decoration: none; cursor: pointer; }
.ui-btn:hover { background: var(--ui-bg); }
.ui-btn--primary { background: var(--ui-primary); color: white; border-color: var(--ui-primary); }
.ui-btn--primary:hover { background: var(--ui-primary-hover); }
.ui-btn:disabled, .ui-btn[aria-disabled='true'] { opacity: .55; cursor: not-allowed; }
.ui-btn[aria-busy='true'] { cursor: progress; }
.ui-page :focus-visible, .ui-dialog :focus-visible { outline: 3px solid var(--ui-primary); outline-offset: 3px; }
.ui-page svg, .ui-dialog svg { width: 20px; height: 20px; flex-shrink: 0; }
.ui-badge { display: inline-flex; align-items: center; gap: 8px; border-radius: 8px; padding: 8px; background: var(--ui-selected); color: var(--ui-primary); }
.ui-badge--review { color: var(--ui-review); background: #fffbeb; }
.ui-field { display: grid; gap: var(--ui-space-1); }
.ui-field label { font-weight: 500; }
.ui-input { width: 100%; min-height: 44px; border: 1px solid var(--ui-border); border-radius: 8px; padding: 8px 16px; font: inherit; color: var(--ui-text); background: var(--ui-surface); }
.ui-input[aria-invalid='true'] { border-color: var(--ui-error); }
.ui-error { color: var(--ui-error); font-size: 14px; }
.ui-error:empty { display: none; }
.ui-value { font-size: 28px; font-weight: 600; font-variant-numeric: tabular-nums; }
.ui-unit { font-size: 16px; font-weight: 400; color: var(--ui-muted); }
.ui-metric { display: block; width: 100%; text-align: left; font: inherit; color: inherit; cursor: pointer; }
.ui-metric:hover { border-color: var(--ui-primary); }
.ui-metric > span { display: block; margin-bottom: 8px; }
.ui-metric .ui-badge { display: inline-flex; }
.ui-gauge { width: 100%; height: 16px; accent-color: var(--ui-primary); }
.ui-metric .ui-gauge-labels { display: flex; justify-content: space-between; font-size: 14px; color: var(--ui-muted); }
.ui-history { display: flex; align-items: center; gap: var(--ui-space-2); cursor: pointer; min-height: 44px; }
.ui-history:has(input:checked) { border-color: var(--ui-primary); background: var(--ui-selected); }
.ui-history input { width: 24px; height: 24px; accent-color: var(--ui-primary); flex-shrink: 0; }
.ui-history strong, .ui-history small { display: block; }
.ui-history small { font-size: 14px; color: var(--ui-muted); }
.ui-dialog { border: 1px solid var(--ui-border); border-radius: var(--ui-radius); background: var(--ui-surface); padding: var(--ui-space-3); width: min(560px, calc(100% - 32px)); max-height: calc(100dvh - 32px); overflow: auto; }
.ui-dialog::backdrop { background: rgb(15 23 42 / .5); }
.ui-swatches { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 16px; }
.ui-swatch { border-top: 8px solid var(--swatch); }
.ui-demo-note { border-left: 4px solid var(--ui-primary); padding: 16px; background: var(--ui-selected); }
.ui-preview { max-width: 100%; max-height: 360px; object-fit: contain; }
[hidden] { display: none !important; }
@media (max-width: 760px) {
    .ui-grid, .ui-grid--two { grid-template-columns: 1fr; }
    .ui-btn.ui-menu { display: inline-flex; }
    .ui-nav { display: none; width: 100%; }
    .ui-nav[data-open='true'] { display: flex; flex-direction: column; }
    .ui-card { padding: var(--ui-space-2); }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }