:root {
    --color-primary: #9a3412;
    --color-secondary: #1c1917;
    --color-accent: #c2410c;
    --color-success: #3f6212;
    --color-warning: #a16207;
    --color-danger: #b91c1c;
    --color-surface: #fffdf9;
    --color-background: #f4efe8;
    --color-text: #1c1917;
    --color-muted: #57534e;
    --color-border: #e7e0d6;
    --color-banner: #7c2d12;
    --color-banner-text: #fff7ed;
    --shadow: 0 12px 40px rgba(28, 25, 23, 0.08);
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --font-body: "Segoe UI", system-ui, -apple-system, sans-serif;
    --font-display: "Palatino Linotype", Palatino, "Iowan Old Style", Georgia, serif;
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 24px;
    --space-6: 32px;
    --space-7: 48px;
    --space-8: 64px;
    --wrap: min(1120px, calc(100% - 32px));
}

@media (min-width: 768px) {
    :root { --wrap: min(1120px, calc(100% - 48px)); }
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-primary: #fb923c;
        --color-secondary: #f5f0ea;
        --color-accent: #fdba74;
        --color-success: #a3e635;
        --color-warning: #fbbf24;
        --color-danger: #f87171;
        --color-surface: #1c1917;
        --color-background: #0c0a09;
        --color-text: #f5f0ea;
        --color-muted: #a8a29e;
        --color-border: #44403c;
        --color-banner: #9a3412;
        --color-banner-text: #fff7ed;
        --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
    }
}

*, *::before, *::after { box-sizing: border-box; }

html { font-size: 16px; }

body {
    margin: 0;
    font-family: var(--font-body);
    background: var(--color-background);
    color: var(--color-text);
    line-height: 1.55;
    min-height: 100vh;
}

img { max-width: 100%; }

a {
    color: var(--color-primary);
    text-underline-offset: 3px;
}

a:hover { color: var(--color-accent); }

h1, h2, h3 {
    font-family: var(--font-display);
    line-height: 1.2;
    font-weight: 600;
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(1.75rem, 4vw, 2.75rem); margin: 0 0 var(--space-4); }
h2 { font-size: 1.25rem; margin: 0 0 var(--space-3); }
h3 { font-size: 1.05rem; margin: 0 0 var(--space-2); }

p { margin: 0 0 var(--space-3); }

.wrap {
    width: var(--wrap);
    margin-inline: auto;
}

.skip-link {
    position: absolute;
    left: var(--space-4);
    top: -40px;
    background: var(--color-primary);
    color: #fff;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-sm);
    z-index: 20;
}

.skip-link:focus { top: var(--space-2); }

.demo-banner {
    background: var(--color-banner);
    color: var(--color-banner-text);
    text-align: center;
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: var(--space-2) var(--space-4);
    font-weight: 600;
}

.site-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.header-inner, .footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-4) 0;
    flex-wrap: wrap;
}

.wordmark {
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.wordmark-name {
    font-family: var(--font-display);
    font-size: 1.35rem;
    color: var(--color-primary);
    letter-spacing: 0.02em;
}

.wordmark-sub {
    font-size: 0.68rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.site-nav {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
}

.site-nav a {
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.95rem;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    padding: 10px 8px;
    border-bottom: 2px solid transparent;
}

.site-nav a[aria-current="page"],
.site-nav a:hover,
.site-nav a:focus-visible {
    border-bottom-color: var(--color-primary);
}

.site-footer {
    margin-top: var(--space-8);
    border-top: 1px solid var(--color-border);
    color: var(--color-muted);
    font-size: 0.9rem;
}

.hero { padding: var(--space-7) 0 var(--space-5); }

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.16em;
    font-size: 0.72rem;
    color: var(--color-primary);
    font-weight: 700;
    margin-bottom: var(--space-2);
}

.lede { font-size: 1.05rem; max-width: 46rem; color: var(--color-muted); }

.grid-page {
    display: grid;
    gap: var(--space-5);
    padding-bottom: var(--space-7);
}

@media (min-width: 1024px) {
    .grid-page { grid-template-columns: 1.4fr 0.8fr; align-items: start; }
}

.panel {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    box-shadow: var(--shadow);
}

.form-panel, .side-panel { padding: var(--space-6); }

.field { margin-bottom: var(--space-5); }

label, legend {
    display: block;
    font-weight: 650;
    margin-bottom: var(--space-2);
}

.fieldset {
    border: 0;
    padding: 0;
    margin: 0 0 var(--space-5);
}

input[type="text"],
input[type="email"],
input[type="date"],
select {
    width: 100%;
    min-height: 44px;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    color: var(--color-text);
    font: inherit;
}

input:focus-visible,
select:focus-visible,
button:focus-visible,
a:focus-visible,
summary:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.hint, .muted { color: var(--color-muted); font-size: 0.9rem; }

.field-error { color: var(--color-danger); font-size: 0.88rem; margin: var(--space-2) 0 0; }

.has-error input,
.has-error select {
    border-color: var(--color-danger);
}

.check-grid {
    display: grid;
    gap: var(--space-2);
    grid-template-columns: 1fr;
}

@media (min-width: 480px) {
    .check-grid { grid-template-columns: 1fr 1fr; }
}

.check {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-weight: 500;
    min-height: 44px;
}

.check input { width: 18px; height: 18px; accent-color: var(--color-primary); }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px 18px;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    font: inherit;
    font-weight: 650;
    text-decoration: none;
    transition: transform 160ms ease, background-color 160ms ease, color 160ms ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
    background: var(--color-primary);
    color: #fff7ed;
}

.btn-primary:hover { background: var(--color-accent); color: #fff; }

.btn-secondary {
    background: transparent;
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}

.form-actions { margin-top: var(--space-4); }

.steps {
    padding-left: 1.2rem;
    color: var(--color-muted);
}

.steps li { margin-bottom: var(--space-3); }

.sample-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sample-list li {
    padding: var(--space-3) 0;
    border-top: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sample-list span { color: var(--color-muted); font-size: 0.85rem; }

@media (max-width: 390px) {
    .sample-list a,
    .outbox-body a {
        display: inline-flex;
        align-items: center;
        min-height: 44px;
        padding-block: 10px;
        line-height: 1.25;
    }
}

.alert {
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    margin: var(--space-4) auto;
    width: var(--wrap);
}

.alert-error {
    background: color-mix(in srgb, var(--color-danger) 12%, var(--color-surface));
    border: 1px solid var(--color-danger);
}

.alert-ok {
    background: color-mix(in srgb, var(--color-success) 12%, var(--color-surface));
    border: 1px solid var(--color-success);
}

.cover { padding: var(--space-7) 0 var(--space-5); }

.cover-meta {
    display: grid;
    gap: var(--space-4);
    grid-template-columns: 1fr 1fr;
    margin: var(--space-5) 0;
}

@media (min-width: 768px) {
    .cover-meta { grid-template-columns: repeat(4, 1fr); }
}

.cover-meta dt {
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.cover-meta dd { margin: 0; font-weight: 600; }

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
}

.inline-form { display: inline; }

.card-row, .mile-grid {
    display: grid;
    gap: var(--space-4);
    margin-bottom: var(--space-5);
}

@media (min-width: 768px) {
    .card-row { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 1024px) {
    .mile-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .mile-grid { grid-template-columns: 1fr 1fr; }
}

.mile-index, .status {
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--color-primary);
}

.status-sent { color: var(--color-success); }
.status-draft { color: var(--color-warning); }

.pill {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-weight: 700;
    background: var(--color-border);
}

.pill-draft { background: color-mix(in srgb, var(--color-warning) 18%, var(--color-surface)); color: var(--color-warning); }
.pill-sent { background: color-mix(in srgb, var(--color-primary) 14%, var(--color-surface)); color: var(--color-primary); }
.pill-signed { background: color-mix(in srgb, var(--color-success) 16%, var(--color-surface)); color: var(--color-success); }
.pill-deposit_paid { background: color-mix(in srgb, var(--color-success) 28%, var(--color-surface)); color: var(--color-success); }

.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.78rem;
    font-weight: 700;
}

.badge-ok { background: color-mix(in srgb, var(--color-success) 16%, var(--color-surface)); color: var(--color-success); }
.badge-warn { background: color-mix(in srgb, var(--color-danger) 14%, var(--color-surface)); color: var(--color-danger); }

.scope-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    list-style: none;
    padding: 0;
}

.scope-chips li {
    border: 1px solid var(--color-border);
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 0.9rem;
}

.section-title { margin: 0 0 var(--space-4); }

.invoice table, .outbox-table {
    width: 100%;
    border-collapse: collapse;
}

.invoice th, .invoice td, .outbox-table th, .outbox-table td {
    text-align: left;
    padding: 10px 8px;
    border-bottom: 1px solid var(--color-border);
    vertical-align: top;
}

.num { text-align: right; font-variant-numeric: tabular-nums; }

.total-row th, .total-row td {
    font-size: 1.1rem;
    padding-top: var(--space-4);
}

.tax-note {
    margin-top: var(--space-4);
    font-size: 0.9rem;
    color: var(--color-muted);
}

.terms { padding-left: 1.2rem; }
.terms li { margin-bottom: var(--space-3); }

.signature .sign-line {
    border-bottom: 1px solid var(--color-text);
    max-width: 280px;
    height: 48px;
    margin: var(--space-4) 0 var(--space-2);
}

.table-wrap { overflow-x: auto; }

.tap-link {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
}

.proposal-watermark {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 8;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.proposal-watermark span {
    transform: rotate(-32deg);
    font-size: clamp(4.5rem, 22vw, 10rem);
    font-weight: 800;
    letter-spacing: 0.14em;
    color: color-mix(in srgb, var(--color-primary) 20%, transparent);
    text-transform: uppercase;
    white-space: nowrap;
    user-select: none;
}

.stack-cards {
    display: grid;
    gap: var(--space-4);
    margin-bottom: var(--space-5);
}

.stack-card .stack-meta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
    margin: var(--space-3) 0;
}

.stack-card .stack-meta dt {
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.stack-card .stack-meta dd { margin: 0; font-weight: 600; }

.dash-table-wrap,
.outbox-table-wrap { display: none; }

@media (min-width: 768px) {
    .stack-cards { display: none; }
    .dash-table-wrap,
    .outbox-table-wrap { display: block; }
}

.outbox-body {
    margin-top: var(--space-3);
    padding: var(--space-4);
    background: var(--color-background);
    border-radius: var(--radius-md);
}

.empty { text-align: left; }

.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;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation: none !important;
        transition: none !important;
    }
}

#signature-pad {
    display: block;
    width: 100%;
    max-width: 560px;
    height: auto;
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-md);
    background: #fff;
    touch-action: none;
}

.sign-image {
    display: block;
    max-width: 280px;
    height: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: #fff;
    margin: var(--space-3) 0;
}

.demo-legal {
    font-size: 0.9rem;
    color: var(--color-primary);
    font-weight: 650;
}

.hash-line { word-break: break-all; font-size: 0.8rem; }

.sim-banner {
    background: var(--color-warning);
    color: #1c1917;
    text-align: center;
    font-weight: 700;
    padding: var(--space-3);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-5);
}

.checkout-grid {
    display: grid;
    gap: var(--space-5);
    padding-bottom: var(--space-7);
}

@media (min-width: 768px) {
    .checkout-grid { grid-template-columns: 0.8fr 1.2fr; align-items: start; }
}

.checkout-amount {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    margin: 0 0 var(--space-3);
}

.checkout-amount span { font-size: 1rem; color: var(--color-muted); }

.pay-row {
    display: grid;
    gap: var(--space-4);
    grid-template-columns: 1fr 1fr;
}

.fake-card {
    background: linear-gradient(135deg, #1c1917, #44403c);
    color: #fafaf9;
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    margin-bottom: var(--space-5);
}

.fake-card-label {
    letter-spacing: 0.16em;
    text-transform: uppercase;
    font-size: 0.7rem;
    opacity: 0.8;
}

.fake-card-number {
    font-size: clamp(0.85rem, 4.6vw, 1.25rem);
    letter-spacing: 0.12em;
    font-variant-numeric: tabular-nums;
    margin: var(--space-3) 0;
    white-space: nowrap;
    overflow: hidden;
}

@media (max-width: 360px) {
    .fake-card-number {
        letter-spacing: 0.04em;
        font-size: 0.82rem;
    }
}

.confirm-meta {
    display: grid;
    gap: var(--space-4);
    grid-template-columns: 1fr 1fr;
    margin: var(--space-5) 0;
}

.confirm-meta dt {
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.confirm-meta dd { margin: 0; font-weight: 600; }

.count-grid {
    display: grid;
    gap: var(--space-4);
    grid-template-columns: 1fr 1fr;
    margin-bottom: var(--space-5);
}

@media (min-width: 768px) {
    .count-grid { grid-template-columns: repeat(4, 1fr); }
}

.count-label {
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.72rem;
    color: var(--color-muted);
    margin: 0;
}

.count-value {
    font-family: var(--font-display);
    font-size: 2rem;
    margin: var(--space-2) 0 0;
}

.hero-split {
    display: flex;
    justify-content: space-between;
    gap: var(--space-4);
    align-items: flex-end;
    flex-wrap: wrap;
}

.dash-table {
    width: 100%;
    border-collapse: collapse;
}

.dash-table th, .dash-table td {
    text-align: left;
    padding: 12px 8px;
    border-bottom: 1px solid var(--color-border);
    vertical-align: top;
}

.policy-note { margin-bottom: var(--space-5); }

.confirm-dialog {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    max-width: 28rem;
    background: var(--color-surface);
    color: var(--color-text);
}

.confirm-dialog::backdrop {
    background: rgba(28, 25, 23, 0.45);
}

@media print {
    .demo-banner { position: static; }
    .site-nav, .actions, .site-footer, .skip-link, .sign-form { display: none; }
    body { background: #fff; }
    .panel { box-shadow: none; }
}

/* Walkthrough video block (added 2026-10-19) */
.walkthrough-panel {
    margin-bottom: var(--space-5);
}

.walkthrough-head h2 {
    margin-bottom: var(--space-2);
}

.walkthrough-head .hint {
    max-width: 46rem;
}

.walkthrough-frame {
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-background);
}

.walkthrough-frame:focus-within {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.walkthrough-video {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 10;
    background: var(--color-background);
}

.walkthrough-transcript {
    margin-top: var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
}

.walkthrough-transcript summary {
    cursor: pointer;
    list-style: none;
    min-height: 44px;
    padding: var(--space-3) var(--space-4);
    font-weight: 650;
    color: var(--color-primary);
    border-radius: var(--radius-lg);
}

.walkthrough-transcript summary::-webkit-details-marker {
    display: none;
}

.walkthrough-transcript summary::after {
    content: "+";
    float: right;
    color: var(--color-muted);
}

.walkthrough-transcript[open] summary::after {
    content: "-";
}

.walkthrough-transcript-body {
    padding: 0 var(--space-4) var(--space-4);
    color: var(--color-muted);
    font-size: 0.95rem;
    max-width: 46rem;
}

.walkthrough-transcript-body p:last-child {
    margin-bottom: 0;
}

@media (max-width: 479px) {
    .walkthrough-panel {
        padding: var(--space-4);
    }
}

@media (min-width: 1024px) {
    .walkthrough-panel {
        display: grid;
        grid-template-columns: minmax(240px, 300px) minmax(0, 1fr);
        gap: var(--space-5);
        align-items: start;
    }
}

@media print {
    .walkthrough-panel { display: none; }
}