/* ============================================
   OPTIMRA — Authority Memo Stylesheet
   Design: Confidential report aesthetic.
   Anti-template. Anti-marketing.
   ============================================ */

/* --- RESET & BASE --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-bg: #faf9f7;
    --color-bg-alt: #f3f1ed;
    --color-text: #1a1a1a;
    --color-text-secondary: #4a4a4a;
    --color-text-muted: #7a7a7a;
    --color-accent: #8b0000;
    --color-accent-light: #a52a2a;
    --color-border: #d4d0c8;
    --color-border-heavy: #1a1a1a;
    --color-highlight: #fffce0;
    --color-reject: #8b0000;
    --color-accept: #2d5016;
    --color-code-bg: #2b2b2b;

    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-serif: 'Newsreader', Georgia, 'Times New Roman', serif;
    --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

    --max-width: 780px;
    --section-gap: 5rem;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    padding: 0;
    min-height: 100vh;
}

::selection {
    background: var(--color-accent);
    color: #fff;
}

/* --- NAVIGATION --- */
.site-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}

.site-nav__inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0.9rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-nav__logo {
    color: var(--color-text);
    text-decoration: none;
    transition: color 0.2s ease;
    display: flex;
    align-items: center;
}

.site-nav__logo:hover {
    color: var(--color-accent);
}

.site-nav__logo-svg {
    height: 22px;
    width: auto;
}

.site-nav__links {
    display: flex;
    align-items: center;
    gap: 1.8rem;
}

.site-nav__links a {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

.site-nav__links a:hover {
    color: var(--color-text);
}

.site-nav__cta {
    color: var(--color-text) !important;
    font-weight: 600 !important;
    padding: 0.4rem 1rem;
    border: 1px solid var(--color-border-heavy);
    transition: background 0.2s ease, color 0.2s ease !important;
}

.site-nav__cta:hover {
    background: var(--color-text);
    color: var(--color-bg) !important;
}

.site-nav__toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    flex-direction: column;
    gap: 5px;
}

.site-nav__toggle span {
    display: block;
    width: 20px;
    height: 1.5px;
    background: var(--color-text);
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* --- DOCUMENT HEADER --- */
.doc-header {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 3rem 2rem 2rem;
    border-bottom: 2px solid var(--color-border-heavy);
}

.doc-header__meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.doc-header__classification {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    color: var(--color-accent);
    font-weight: 600;
    padding: 0.3rem 0.8rem;
    border: 1px solid var(--color-accent);
}

.doc-header__date {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
}

.doc-header__org {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.doc-header__logo {
    color: var(--color-text);
    display: block;
}

.doc-header__logo-svg {
    height: 36px;
    width: auto;
}

.doc-header__division {
    font-family: var(--font-serif);
    font-size: 1.05rem;
    font-style: italic;
    color: var(--color-text-secondary);
}

/* --- MEMO BODY --- */
.memo-body {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* --- SECTION STRUCTURE --- */
.memo-section {
    padding: var(--section-gap) 0;
    border-bottom: 1px solid var(--color-border);
    position: relative;
}

.memo-section:last-of-type {
    border-bottom: none;
}

.section-marker {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
    text-transform: uppercase;
}

/* --- TYPOGRAPHY --- */
.memo-title {
    font-family: var(--font-serif);
    font-size: 2.2rem;
    font-weight: 600;
    line-height: 1.25;
    color: var(--color-text);
    margin-bottom: 2.5rem;
    max-width: 680px;
}

h2 {
    font-family: var(--font-serif);
    font-size: 1.65rem;
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-text);
    margin-bottom: 1.5rem;
}

h3 {
    font-family: var(--font-body);
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

h4 {
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.4rem;
}

p {
    margin-bottom: 1.2rem;
    font-size: 0.95rem;
    color: var(--color-text-secondary);
}

p:last-child {
    margin-bottom: 0;
}

strong {
    color: var(--color-text);
    font-weight: 600;
}

/* --- LEAD BLOCK --- */
.lead-block {
    margin-bottom: 2rem;
}

.lead-block p {
    font-size: 1.05rem;
    line-height: 1.8;
}

.lead-block p:first-child {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-style: italic;
    color: var(--color-text);
    line-height: 1.7;
}

/* --- CALLOUT BOX --- */
.callout-box {
    background: var(--color-bg-alt);
    border-left: 3px solid var(--color-border-heavy);
    padding: 1.8rem 2rem;
    margin: 2rem 0;
}

.callout-box p {
    font-size: 0.9rem;
    line-height: 1.75;
}

/* --- DATA TABLES --- */
.data-table {
    margin: 2.5rem 0;
    overflow-x: auto;
    border: 1px solid var(--color-border);
}

.data-table table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.data-table thead {
    background: var(--color-text);
}

.data-table th {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-bg);
    padding: 1rem 1.2rem;
    text-align: left;
    white-space: nowrap;
}

.data-table td {
    padding: 1rem 1.2rem;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    vertical-align: top;
    line-height: 1.5;
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

.data-table tbody tr:nth-child(even) {
    background: var(--color-bg-alt);
}

.data-table--compact {
    margin: 2rem 0;
}

.data-table--compact td,
.data-table--compact th {
    padding: 0.75rem 1rem;
}

/* --- ANNOTATION --- */
.annotation {
    margin: 2.5rem 0;
    padding: 1.5rem 2rem;
    background: var(--color-highlight);
    border: 1px solid #e6e0a0;
    position: relative;
}

.annotation__label {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--color-accent);
    display: block;
    margin-bottom: 0.8rem;
}

.annotation p {
    font-size: 0.88rem;
    line-height: 1.7;
}

/* --- SYSTEM PHASES --- */
.system-phase {
    margin: 2.5rem 0;
    border: 1px solid var(--color-border);
    transition: border-color 0.3s ease;
}

.system-phase:hover {
    border-color: var(--color-text-muted);
}

.phase-header {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    padding: 1.2rem 1.5rem;
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
    flex-wrap: wrap;
}

.phase-number {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.phase-header h3 {
    margin-bottom: 0;
    flex: 1;
}

.phase-duration {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
    flex-shrink: 0;
}

.phase-body {
    padding: 1.5rem;
}

.phase-body p {
    font-size: 0.9rem;
}

/* --- FILTER LIST --- */
.filter-list {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.filter-item {
    padding: 1.5rem 2rem;
    border: 1px solid var(--color-border);
    position: relative;
}

.filter-item__marker {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    margin-bottom: 0.8rem;
    display: inline-block;
    padding: 0.2rem 0.6rem;
}

.filter-item--reject {
    border-left: 3px solid var(--color-reject);
}

.filter-item--reject .filter-item__marker {
    color: var(--color-reject);
    background: rgba(139, 0, 0, 0.06);
}

.filter-item--accept {
    border-left: 3px solid var(--color-accept);
    background: rgba(45, 80, 22, 0.02);
}

.filter-item--accept .filter-item__marker {
    color: var(--color-accept);
    background: rgba(45, 80, 22, 0.08);
}

.filter-item h4 {
    margin-bottom: 0.6rem;
}

.filter-item p {
    font-size: 0.9rem;
}

/* --- CASE STUDY --- */
.case-header {
    margin-bottom: 2rem;
    padding: 1.2rem 1.5rem;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
}

.case-meta {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--color-text-secondary);
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.case-meta span:nth-child(even) {
    color: var(--color-border);
}

.case-section {
    margin-bottom: 2.5rem;
}

.case-section h4 {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-border);
}

.case-section p {
    font-size: 0.92rem;
}

.case-results {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
}

.case-results li {
    font-size: 0.92rem;
    color: var(--color-text-secondary);
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--color-border);
    padding-left: 1.2rem;
    position: relative;
}

.case-results li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background: var(--color-accept);
    border-radius: 50%;
}

.case-results li:last-child {
    border-bottom: none;
}

/* --- TRUTH BLOCKS --- */
.truth-block {
    margin-bottom: 3rem;
    padding-left: 3.5rem;
    position: relative;
}

.truth-block:last-child {
    margin-bottom: 0;
}

.truth-number {
    position: absolute;
    left: 0;
    top: 0;
    font-family: var(--font-mono);
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-border);
    line-height: 1;
}

.truth-block h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.truth-block p {
    font-size: 0.92rem;
}

.truth-list {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
}

.truth-list li {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    padding: 0.8rem 0;
    padding-left: 1rem;
    border-left: 2px solid var(--color-border);
    margin-bottom: 0.8rem;
    line-height: 1.7;
}

/* --- ENGAGEMENT MODEL --- */
.engagement-model {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.model-item {
    padding: 1.8rem 2rem;
    border: 1px solid var(--color-border);
    background: var(--color-bg);
}

.model-item h4 {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-border);
}

.model-item p {
    font-size: 0.9rem;
}

/* --- CONTACT BLOCK --- */
.contact-block {
    margin-top: 1.5rem;
}

.contact-block > p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.contact-cta {
    margin-top: 2.5rem;
    padding: 2rem;
    border: 2px solid var(--color-border-heavy);
    text-align: center;
}

.cta-link {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: 0.05em;
    display: inline-block;
    padding-bottom: 2px;
    border-bottom: 2px solid var(--color-text);
    transition: color 0.2s ease, border-color 0.2s ease;
}

.cta-link:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.contact-note {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--color-text-muted);
    margin-top: 1rem;
    letter-spacing: 0.02em;
}

/* --- LEGAL PAGES --- */
.legal-page {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.legal-header {
    padding: 3rem 0 2rem;
    border-bottom: 2px solid var(--color-border-heavy);
    margin-bottom: 3rem;
}

.legal-header h1 {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-text);
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

.legal-effective {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
}

.legal-body {
    padding-bottom: 4rem;
}

.legal-section {
    margin-bottom: 2.5rem;
}

.legal-section h2 {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-border);
}

.legal-section h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text);
    margin-top: 1.5rem;
    margin-bottom: 0.6rem;
}

.legal-section p {
    font-size: 0.9rem;
    line-height: 1.75;
}

.legal-section ul {
    list-style: none;
    padding: 0;
    margin: 0.8rem 0 1.2rem;
}

.legal-section ul li {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    padding: 0.4rem 0 0.4rem 1.2rem;
    position: relative;
}

.legal-section ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.85rem;
    width: 4px;
    height: 4px;
    background: var(--color-border);
    border-radius: 50%;
}

/* --- DOCUMENT FOOTER --- */
.doc-footer {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem 3rem;
}

.doc-footer__line {
    height: 2px;
    background: var(--color-border-heavy);
    margin-bottom: 1.5rem;
}

.doc-footer__content {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    flex-wrap: wrap;
    gap: 1rem;
}

.doc-footer__legal {
    margin-top: 1rem;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.05em;
    display: flex;
    gap: 0.6rem;
    align-items: center;
}

.doc-footer__legal a {
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

.doc-footer__legal a:hover {
    color: var(--color-text);
}

.doc-footer__legal span {
    color: var(--color-border);
}

/* --- ANIMATIONS --- */
.memo-section {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.memo-section.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
    :root {
        --section-gap: 3.5rem;
    }

    .site-nav__inner {
        padding: 0.9rem 1.5rem;
    }

    .site-nav__links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-bg);
        border-bottom: 1px solid var(--color-border);
        flex-direction: column;
        padding: 1rem 1.5rem 1.5rem;
        gap: 1rem;
    }

    .site-nav__links.active {
        display: flex;
    }

    .site-nav__toggle {
        display: flex;
    }

    .site-nav__cta {
        text-align: center;
        display: block;
    }

    .legal-page {
        padding: 0 1.5rem;
    }

    .legal-header h1 {
        font-size: 1.5rem;
    }

    .doc-header {
        padding: 2rem 1.5rem 1.5rem;
    }

    .doc-header__meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.8rem;
    }

    .doc-header__logo {
        font-size: 1.4rem;
    }

    .memo-body {
        padding: 0 1.5rem;
    }

    .memo-title {
        font-size: 1.6rem;
    }

    h2 {
        font-size: 1.35rem;
    }

    .phase-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .truth-block {
        padding-left: 2.5rem;
    }

    .truth-number {
        font-size: 1.5rem;
    }

    .data-table {
        font-size: 0.8rem;
    }

    .case-meta {
        flex-direction: column;
        gap: 0.3rem;
    }

    .case-meta span:nth-child(even) {
        display: none;
    }

    .doc-footer__content {
        flex-direction: column;
    }

    .contact-cta {
        padding: 1.5rem;
    }

    .cta-link {
        font-size: 1rem;
    }

    .callout-box {
        padding: 1.3rem 1.5rem;
    }

    .filter-item {
        padding: 1.2rem 1.5rem;
    }
}

@media (max-width: 480px) {
    .memo-title {
        font-size: 1.35rem;
    }

    h2 {
        font-size: 1.2rem;
    }

    .doc-header__logo {
        font-size: 1.2rem;
    }

    .phase-body {
        padding: 1rem;
    }

    .model-item {
        padding: 1.3rem 1.5rem;
    }
}

/* --- PRINT --- */
@media print {
    .memo-section {
        opacity: 1;
        transform: none;
        break-inside: avoid;
    }

    body {
        font-size: 11pt;
    }

    .doc-header__classification {
        color: #000;
        border-color: #000;
    }
}