:root {
    --color-bg: #F5F4EF;
    --color-ink: #000000;
    --grid-line: 1px solid var(--color-ink);
    --font-main: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-mono: 'Courier New', Courier, monospace;
    --spacing-unit: 20px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    cursor: crosshair;
}

body {
    background-color: var(--color-bg);
    color: var(--color-ink);
    font-family: var(--font-main);
    overflow-x: hidden;
    width: 100vw;
    min-height: 100vh;
    font-feature-settings: "ss01", "ss02";
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 0.9;
}

h1 {
    font-size: clamp(3rem, 6vw, 4.5rem);
    text-transform: none;
}

h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

p {
    font-size: 1.1rem;
    line-height: 1.3;
    max-width: 45ch;
    font-weight: 400;
}

.label {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
    display: block;
}

.grid-container {
    display: grid;
    grid-template-columns: 80px 1fr;
    min-height: 100vh;
    border-left: var(--grid-line);
    border-right: var(--grid-line);
    max-width: 1280px;
    margin: 0 auto;
    position: relative;
}

.ruler-y {
    width: 80px;
    border-right: var(--grid-line);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 20px 0;
    font-family: var(--font-mono);
    font-size: 10px;
    text-align: right;
    padding-right: 8px;
    position: relative;
    background-image: linear-gradient(to bottom, var(--color-ink) 1px, transparent 1px);
    background-size: 100% 20px;
}

.main-content {
    display: flex;
    flex-direction: column;
}

.ruler-x {
    height: 40px;
    width: 100%;
    border-bottom: var(--grid-line);
    display: flex;
    align-items: flex-end;
    background-image: linear-gradient(to right, var(--color-ink) 1px, transparent 1px);
    background-size: 20px 100%;
    font-family: var(--font-mono);
    font-size: 10px;
    padding-bottom: 4px;
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--color-bg);
}

header {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    border-bottom: var(--grid-line);
}

.header-cell {
    padding: 2rem;
    border-right: var(--grid-line);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 160px;
}

.header-cell:last-child {
    border-right: none;
}

.report-summary {
    padding: 3rem 2rem;
    border-bottom: var(--grid-line);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 2rem;
}

.metric-box {
    border: var(--grid-line);
    padding: 1.5rem;
    min-width: 200px;
}

.metric-value {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -0.04em;
    margin-top: 0.5rem;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    border-bottom: var(--grid-line);
}

.use-case-card {
    padding: 2rem;
    border-right: var(--grid-line);
    border-bottom: var(--grid-line);
    display: flex;
    flex-direction: column;
    transition: background-color 0.2s;
}

.use-case-card:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.case-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.case-number {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 700;
}

.status-pill {
    display: inline-block;
    padding: 2px 8px;
    border: 1px solid var(--color-ink);
    font-weight: 700;
    font-size: 0.75rem;
}

.metrics-row {
    display: flex;
    gap: 2rem;
    margin-top: 1.5rem;
    margin-bottom: 1.5rem;
}

.metric-small {
    display: flex;
    flex-direction: column;
}

.metric-small .value {
    font-size: 1.5rem;
    font-weight: 700;
    margin-top: 0.25rem;
}

.btn-explore {
    background: transparent;
    border: 1px solid var(--color-ink);
    color: var(--color-ink);
    padding: 0.8rem 1.5rem;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: auto;
}

.btn-explore:hover {
    background: var(--color-ink);
    color: var(--color-bg);
}

.roi-section {
    padding: 3rem 2rem;
    border-bottom: var(--grid-line);
}

.roi-header {
    margin-bottom: 2rem;
}

.roi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.roi-card {
    border: var(--grid-line);
    padding: 2rem;
}

.roi-value {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 1rem 0;
}

.roi-total {
    border: 2px solid var(--color-ink);
    padding: 2rem;
    text-align: center;
    background-color: rgba(0, 0, 0, 0.05);
}

.roi-total-value {
    font-size: 4rem;
    font-weight: 700;
    margin-top: 1rem;
}

.footer-section {
    padding: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    min-height: 100px;
}

.btn-print {
    background: transparent;
    border: 1px solid var(--color-ink);
    color: var(--color-ink);
    padding: 0.8rem 1.5rem;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 1rem;
}

.btn-print:hover {
    background: var(--color-ink);
    color: var(--color-bg);
}

/* Use Case Detail Page Styles */
.detail-hero {
    padding: 3rem 2rem;
    border-bottom: var(--grid-line);
}

.detail-hero h1 {
    margin-bottom: 1rem;
}

.breadcrumb {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    margin-bottom: 1rem;
}

.breadcrumb a {
    color: var(--color-ink);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.content-section {
    padding: 2rem;
    border-bottom: var(--grid-line);
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.prompt-tester {
    border: var(--grid-line);
    padding: 2rem;
    margin-top: 2rem;
}

.prompt-input {
    width: 100%;
    padding: 1rem;
    border: var(--grid-line);
    background: var(--color-bg);
    color: var(--color-ink);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    resize: vertical;
    min-height: 100px;
    margin-top: 1rem;
}

.prompt-output {
    margin-top: 1rem;
    padding: 1.5rem;
    background: rgba(0, 0, 0, 0.05);
    border: var(--grid-line);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    min-height: 150px;
}

.btn-test {
    background: var(--color-ink);
    color: var(--color-bg);
    border: none;
    padding: 0.8rem 1.5rem;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 1rem;
}

.btn-test:hover {
    background: transparent;
    color: var(--color-ink);
    border: 1px solid var(--color-ink);
}

.example-prompts {
    margin-top: 1rem;
}

.example-prompt {
    padding: 0.75rem;
    border: 1px solid rgba(0, 0, 0, 0.3);
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.85rem;
}

.example-prompt:hover {
    background: rgba(0, 0, 0, 0.1);
    border-color: var(--color-ink);
}

.capability-list {
    list-style: none;
    padding: 0;
}

.capability-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
}

.capability-list li:before {
    content: "→";
    margin-right: 0.75rem;
    font-weight: 700;
}

@media print {
    .ruler-y, .ruler-x, .btn-print, .btn-explore, .btn-test {
        display: none;
    }
    .grid-container {
        border: none;
        grid-template-columns: 1fr;
    }
    body {
        background: white;
        color: black;
    }
    header, .report-summary, .use-cases-grid, .roi-section, .footer-section {
        border-color: black;
    }
}

@media (max-width: 768px) {
    .grid-container {
        grid-template-columns: 1fr;
    }
    .ruler-y {
        display: none;
    }
    header {
        grid-template-columns: 1fr;
    }
    .header-cell {
        border-right: none;
        border-bottom: var(--grid-line);
    }
    .report-summary {
        flex-direction: column;
    }
    .use-cases-grid {
        grid-template-columns: 1fr;
    }
    .use-case-card {
        border-right: none;
    }
    .content-grid {
        grid-template-columns: 1fr;
    }
}