:root {
    --dd-bg: #F6F5F0;
    --dd-surface: #FFFFFF;
    --dd-surface-alt: #F0EFE9;
    --dd-ink: #0F172A;
    --dd-muted: #475569;
    --dd-line: #DCE0D9;
    --dd-pine: #145346;
    --dd-pine-dark: #0D3B31;
    --dd-pine-soft: #E6F2EE;
    --dd-copper: #B85D19;
    --dd-ok: #0F766E;
    --dd-ok-bg: #ECFDF5;
    --dd-warn: #B45309;
    --dd-warn-bg: #FFFBEB;
    --dd-bad: #B91C1C;
    --dd-bad-bg: #FEF2F2;
    --dd-shadow: 0 14px 36px rgba(15, 23, 42, 0.06);
}

html[data-theme="dark"] {
    --dd-bg: #0B1210;
    --dd-surface: #121C19;
    --dd-surface-alt: #182622;
    --dd-ink: #F1F5F9;
    --dd-muted: #94A3B8;
    --dd-line: #243630;
    --dd-pine: #2DD4BF;
    --dd-pine-dark: #145346;
    --dd-pine-soft: rgba(45, 212, 191, 0.12);
    --dd-ok-bg: rgba(16, 185, 129, 0.14);
    --dd-warn-bg: rgba(245, 158, 11, 0.14);
    --dd-bad-bg: rgba(239, 68, 68, 0.16);
    --dd-shadow: 0 18px 44px rgba(0, 0, 0, 0.35);
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--dd-bg); color: var(--dd-ink); font-family: 'Inter', system-ui, sans-serif; line-height: 1.5; overflow-x: hidden; }
code, pre { font-family: 'JetBrains Mono', monospace; }
.is-hidden { display: none !important; }

.dd-header { position: sticky; top: 0; z-index: 40; background: color-mix(in srgb, var(--dd-surface) 92%, transparent); backdrop-filter: blur(12px); border-bottom: 1px solid var(--dd-line); }
.dd-header__inner { max-width: 1280px; margin: 0 auto; padding: 12px 20px; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.dd-brand { display: flex; align-items: center; gap: 11px; text-decoration: none; color: var(--dd-ink); }
.dd-brand__mark { width: 38px; height: 38px; border-radius: 10px; background: #145346; color: #FFFFFF; display: grid; place-items: center; flex-shrink: 0; }
.dd-brand__mark svg { width: 21px; height: 21px; }
.dd-brand__kicker { display: block; font-size: 10.5px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--dd-muted); }
.dd-brand__title { display: block; font-size: 15.5px; font-weight: 800; letter-spacing: -0.02em; }

.dd-nav { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.dd-nav-link { text-decoration: none; color: var(--dd-muted); font-size: 13.5px; font-weight: 600; padding: 7px 12px; border-radius: 8px; transition: .15s; }
.dd-nav-link:hover, .dd-nav-link.is-active { color: var(--dd-ink); background: var(--dd-surface-alt); }

.dd-header__actions { display: flex; align-items: center; gap: 10px; }
.dd-icon-btn { width: 36px; height: 36px; border-radius: 9px; border: 1px solid var(--dd-line); background: var(--dd-surface); color: var(--dd-ink); display: grid; place-items: center; cursor: pointer; }
.dd-icon-btn svg { width: 17px; height: 17px; }
html[data-theme="light"] .icon-moon { display: none; }
html[data-theme="dark"] .icon-sun { display: none; }

.dd-admin-pill { display: inline-flex; align-items: center; gap: 7px; padding: 8px 13px; border-radius: 9px; background: #145346; color: #FFFFFF; font-size: 13px; font-weight: 600; text-decoration: none; }
.dd-admin-pill:hover { background: #0D3B31; }

.dd-main { max-width: 1280px; margin: 0 auto; padding: 28px 20px 56px; }
.dd-hero { display: grid; grid-template-columns: 1.35fr 1fr; gap: 26px; align-items: start; margin-bottom: 28px; }
.dd-kicker-badge { display: inline-flex; align-items: center; gap: 8px; padding: 5px 12px; border-radius: 999px; background: var(--dd-pine-soft); color: var(--dd-pine); font-size: 12px; font-weight: 700; }
.dd-dot { width: 8px; height: 8px; border-radius: 50%; background: #10B981; box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2); }
.dd-hero h1, .dd-page-head h1 { font-family: 'Instrument Serif', Georgia, serif; font-weight: 400; font-size: clamp(2.1rem, 3.8vw, 3.25rem); line-height: 1.08; margin: 12px 0; letter-spacing: -0.01em; }
.dd-hero h1 em, .dd-page-head h1 em { color: var(--dd-pine); font-style: italic; }
.dd-lead { font-size: 15px; color: var(--dd-muted); margin: 0 0 18px; max-width: 72ch; }

.dd-stat-strip { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.dd-stat-chip { background: var(--dd-surface); border: 1px solid var(--dd-line); border-radius: 11px; padding: 11px 13px; }
.dd-stat-chip strong { display: block; font-size: 14.5px; font-weight: 800; }
.dd-stat-chip span { font-size: 12px; color: var(--dd-muted); }

.dd-usecase-cards { display: flex; flex-direction: column; gap: 12px; }
.dd-mini-card { background: var(--dd-surface); border: 1px solid var(--dd-line); border-radius: 13px; padding: 15px; display: flex; gap: 13px; box-shadow: var(--dd-shadow); }
.dd-mini-card__icon { width: 38px; height: 38px; border-radius: 10px; background: var(--dd-pine-soft); color: var(--dd-pine); display: grid; place-items: center; flex-shrink: 0; }
.dd-mini-card__icon svg { width: 20px; height: 20px; }
.dd-mini-card strong { display: block; font-size: 14px; margin-bottom: 3px; }
.dd-mini-card p { margin: 0; font-size: 12.5px; color: var(--dd-muted); }

/* READER SHELL */
.dd-reader-shell { background: var(--dd-surface); border: 1px solid var(--dd-line); border-radius: 16px; box-shadow: var(--dd-shadow); overflow: hidden; }
.dd-reader-tabs { display: flex; border-bottom: 1px solid var(--dd-line); background: var(--dd-surface-alt); overflow-x: auto; }
.dd-tab { flex: 1; min-width: max-content; display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 16px; border: none; background: transparent; color: var(--dd-muted); font: 700 13.5px 'Inter', sans-serif; cursor: pointer; border-bottom: 2.5px solid transparent; transition: .15s; }
.dd-tab:hover { color: var(--dd-ink); }
.dd-tab.is-active { background: var(--dd-surface); color: var(--dd-pine); border-bottom-color: var(--dd-pine); }

.dd-tab-panel { display: none; padding: 22px; }
.dd-tab-panel.is-active { display: block; }
.dd-panel-intro h2 { font-size: 17px; margin: 0 0 4px; }
.dd-panel-intro p { font-size: 13.5px; color: var(--dd-muted); margin: 0 0 16px; }

.dd-specimens-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(295px, 1fr)); gap: 12px; }
.dd-spec-card { text-align: left; background: var(--dd-surface-alt); border: 1px solid var(--dd-line); border-radius: 12px; padding: 14px; cursor: pointer; transition: .16s; display: flex; flex-direction: column; justify-content: space-between; gap: 10px; color: var(--dd-ink); font-family: inherit; }
.dd-spec-card:hover { border-color: var(--dd-pine); transform: translateY(-1px); background: var(--dd-surface); }
.dd-spec-card__top { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.dd-spec-card h3 { font-size: 13.5px; font-weight: 700; margin: 4px 0; line-height: 1.35; }
.dd-spec-card p { font-size: 12px; color: var(--dd-muted); margin: 0; }
.dd-spec-card__cta { font-size: 12px; font-weight: 700; color: var(--dd-pine); display: flex; justify-content: space-between; align-items: center; }

/* CAMERA */
.dd-camera-layout { display: grid; grid-template-columns: 1.2fr 1fr; gap: 22px; align-items: center; }
.dd-camera-stage { position: relative; aspect-ratio: 16 / 10; background: #070D0B; border-radius: 14px; overflow: hidden; border: 1px solid var(--dd-line); display: grid; place-items: center; }
#qr-video { width: 100%; height: 100%; object-fit: cover; }
.dd-camera-placeholder { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; padding: 20px; text-align: center; color: #CBD5E1; font-size: 13px; background: rgba(7, 13, 11, 0.84); }
.dd-reticle { position: absolute; width: 210px; height: 210px; pointer-events: none; }
.dd-reticle .c { position: absolute; width: 26px; height: 26px; border-color: #2DD4BF; border-style: solid; }
.dd-reticle .tl { top: 0; left: 0; border-width: 3px 0 0 3px; }
.dd-reticle .tr { top: 0; right: 0; border-width: 3px 3px 0 0; }
.dd-reticle .bl { bottom: 0; left: 0; border-width: 0 0 3px 3px; }
.dd-reticle .br { bottom: 0; right: 0; border-width: 0 3px 3px 0; }
.dd-scan-laser { position: absolute; left: 8px; right: 8px; height: 2px; background: #2DD4BF; box-shadow: 0 0 10px #2DD4BF; animation: ddScan 2.2s ease-in-out infinite; }
@keyframes ddScan { 0%, 100% { top: 12%; } 50% { top: 88%; } }

.dd-field-label { display: block; font-size: 12.5px; font-weight: 700; margin-bottom: 6px; }
.dd-input, .dd-textarea { width: 100%; padding: 10px 12px; border-radius: 9px; border: 1px solid var(--dd-line); background: var(--dd-surface); color: var(--dd-ink); font: 500 13.5px 'Inter', sans-serif; }
.dd-textarea { font-family: 'JetBrains Mono', monospace; font-size: 12.5px; resize: vertical; }
.dd-btn-row { display: flex; gap: 9px; flex-wrap: wrap; margin-top: 10px; }
.dd-btn { display: inline-flex; align-items: center; justify-content: center; gap: 7px; padding: 10px 16px; border-radius: 9px; font: 700 13px 'Inter', sans-serif; cursor: pointer; border: 1px solid transparent; text-decoration: none; }
.dd-btn--primary { background: #145346; color: #FFFFFF; }
.dd-btn--primary:hover { background: #0D3B31; }
.dd-btn--copper { background: rgba(184, 93, 25, 0.12); color: #B85D19; border-color: rgba(184, 93, 25, 0.35); }
.dd-btn--ghost { background: var(--dd-surface-alt); color: var(--dd-ink); border-color: var(--dd-line); }
.dd-cam-status, .dd-file-status { margin-top: 12px; font-size: 12.5px; color: var(--dd-muted); font-family: 'JetBrains Mono', monospace; }

/* DROPZONE */
.dd-dropzone { border: 2px dashed var(--dd-line); border-radius: 14px; padding: 34px 20px; text-align: center; background: var(--dd-surface-alt); transition: .15s; cursor: pointer; }
.dd-dropzone.is-dragover { border-color: var(--dd-pine); background: var(--dd-pine-soft); }
.dd-dropzone h3 { margin: 10px 0 6px; font-size: 16px; }
.dd-dropzone p { margin: 0 auto 16px; max-width: 60ch; font-size: 13px; color: var(--dd-muted); }

/* RAW / WEDGE */
.dd-raw-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 20px; }
.dd-wedge-box { background: var(--dd-surface-alt); border: 1px solid var(--dd-line); border-radius: 12px; padding: 16px; font-size: 13px; }
.dd-wedge-head { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.dd-quick-refs { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; align-items: center; font-size: 12px; }
.dd-chip-btn { border: 1px solid var(--dd-line); background: var(--dd-surface); color: var(--dd-ink); border-radius: 6px; padding: 5px 9px; font: 600 11.5px 'JetBrains Mono', monospace; cursor: pointer; }
.dd-chip-btn:hover { border-color: var(--dd-pine); color: var(--dd-pine); }

/* VERIFICATION REPORT */
.dd-report-container { margin-top: 26px; display: flex; flex-direction: column; gap: 18px; }
.dd-verdict-banner { border-radius: 16px; padding: 22px 24px; border: 2px solid; display: flex; justify-content: space-between; gap: 20px; align-items: center; flex-wrap: wrap; }
.dd-verdict-banner.is-valid { background: var(--dd-ok-bg); border-color: #10B981; }
.dd-verdict-banner.is-warn { background: var(--dd-warn-bg); border-color: #F59E0B; }
.dd-verdict-banner.is-bad { background: var(--dd-bad-bg); border-color: #EF4444; }
.dd-verdict-kicker { font: 800 11.5px 'JetBrains Mono', monospace; letter-spacing: 0.08em; text-transform: uppercase; }
.dd-verdict-banner h2 { margin: 4px 0 6px; font-size: 22px; font-weight: 800; }
.dd-verdict-banner p { margin: 0; font-size: 14px; max-width: 74ch; }
.dd-verdict-matrix { background: #FFFFFF; padding: 8px; border-radius: 10px; border: 1px solid var(--dd-line); flex-shrink: 0; }
.dd-verdict-matrix svg { width: 118px; height: 118px; display: block; }

.dd-cashier-strip { background: var(--dd-surface); border: 2px solid #145346; border-radius: 14px; padding: 18px 20px; display: grid; grid-template-columns: repeat(auto-fit, minmax(185px, 1fr)); gap: 14px; }
.dd-cashier-cell span { display: block; font-size: 11px; font-weight: 700; text-transform: uppercase; color: var(--dd-muted); }
.dd-cashier-cell strong { font-size: 15px; font-family: 'JetBrains Mono', monospace; }

.dd-report-grid { display: grid; grid-template-columns: 1.05fr 1.25fr; gap: 18px; align-items: start; }
.dd-card { background: var(--dd-surface); border: 1px solid var(--dd-line); border-radius: 14px; padding: 20px; box-shadow: var(--dd-shadow); }
.dd-card h3 { margin: 0 0 14px; font-size: 16px; display: flex; justify-content: space-between; align-items: center; gap: 8px; }

.dd-step-list { display: flex; flex-direction: column; gap: 10px; }
.dd-step { display: flex; gap: 12px; padding: 11px 13px; border-radius: 10px; background: var(--dd-surface-alt); border-left: 4px solid #94A3B8; }
.dd-step.is-pass { border-left-color: #10B981; }
.dd-step.is-warn { border-left-color: #F59E0B; }
.dd-step.is-fail { border-left-color: #EF4444; background: var(--dd-bad-bg); }
.dd-step__num { font: 800 12px 'JetBrains Mono', monospace; width: 24px; height: 24px; border-radius: 6px; background: var(--dd-surface); display: grid; place-items: center; flex-shrink: 0; }
.dd-step strong { display: block; font-size: 13.5px; }
.dd-step p { margin: 2px 0 0; font-size: 12.5px; color: var(--dd-muted); word-break: break-word; }

.dd-cert-table-wrap { overflow-x: auto; }
.dd-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.dd-table th, .dd-table td { padding: 9px 11px; border-bottom: 1px solid var(--dd-line); text-align: left; vertical-align: top; }
.dd-table th { font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--dd-muted); background: var(--dd-surface-alt); }

.dd-code-pill { display: inline-block; padding: 3px 8px; border-radius: 6px; font: 700 11.5px 'JetBrains Mono', monospace; background: var(--dd-pine-soft); color: var(--dd-pine); }
.dd-code-pill--muted { background: var(--dd-surface-alt); color: var(--dd-muted); }
.dd-status-pill { display: inline-block; padding: 3px 8px; border-radius: 999px; font: 800 11px 'JetBrains Mono', monospace; }
.dd-status-pill.is-ok { background: var(--dd-ok-bg); color: #059669; }
.dd-status-pill.is-bad { background: var(--dd-bad-bg); color: #DC2626; }
.dd-status-pill.is-warn { background: var(--dd-warn-bg); color: #D97706; }

.dd-raw-dump { background: #0B1210; color: #E2E8F0; padding: 13px; border-radius: 10px; font: 500 12px/1.55 'JetBrains Mono', monospace; overflow-x: auto; white-space: pre-wrap; word-break: break-all; }
.dd-tag-sep { display: inline-block; background: #145346; color: #A7F3D0; padding: 0 4px; border-radius: 4px; margin: 0 2px; font-weight: 700; }

.dd-stack { display: flex; flex-direction: column; gap: 18px; margin-top: 20px; }
.dd-ac-card { background: var(--dd-surface); border: 1px solid var(--dd-line); border-radius: 15px; padding: 22px; box-shadow: var(--dd-shadow); }
.dd-ac-card.is-revoked { border-color: #EF4444; }
.dd-ac-card__head { display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; margin-bottom: 16px; }
.dd-ac-badges { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 8px; }
.dd-ac-card h2 { margin: 0 0 6px; font-size: 19px; }
.dd-ac-card p { margin: 0; font-size: 13.5px; color: var(--dd-muted); max-width: 68ch; }
.dd-ac-meta { font-size: 12.5px; color: var(--dd-muted); display: flex; flex-direction: column; gap: 4px; }
.dd-link-btn { display: inline-block; padding: 4px 9px; border-radius: 6px; border: 1px solid var(--dd-line); text-decoration: none; color: var(--dd-ink); font: 700 11.5px 'JetBrains Mono', monospace; margin-right: 4px; }
.dd-spec-grid { display: flex; flex-direction: column; gap: 20px; margin-top: 20px; }

.dd-footer { border-top: 1px solid var(--dd-line); background: var(--dd-surface); padding: 28px 20px; margin-top: 40px; }
.dd-footer__inner { max-width: 1280px; margin: 0 auto; display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; font-size: 13px; color: var(--dd-muted); }
.dd-footer__inner p { margin: 6px 0 0; max-width: 72ch; font-size: 12.5px; }
.dd-footer__links { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.dd-footer__links a { color: var(--dd-ink); text-decoration: none; font-weight: 600; }

@media (max-width: 960px) {
    .dd-hero, .dd-camera-layout, .dd-raw-grid, .dd-report-grid { grid-template-columns: minmax(0, 1fr); }
    .dd-stat-strip { grid-template-columns: minmax(0, 1fr); }
    .dd-specimens-grid { grid-template-columns: minmax(0, 1fr); }
    .dd-main { padding: 18px 14px 42px; }
    .dd-tab-panel { padding: 15px; }
    .dd-kicker-badge { max-width: 100%; font-size: 11px; flex-wrap: wrap; }
}
@media print {
    .dd-header, .dd-hero, .dd-reader-shell, .dd-footer { display: none !important; }
    .dd-main { padding: 0; }
}