:root {
    --bg: #f6f5f1;
    --surface: #ffffff;
    --surface-soft: #faf8f2;
    --text: #151515;
    --muted: #6b665e;
    --border: #e1ddd3;
    --dark: #111111;
    --accent: #8b5e2e;
    --accent-soft: #efe1cc;
    --shadow: 0 18px 45px rgba(18, 18, 18, 0.08);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--text);
    background: var(--bg);
}

a { color: inherit; }

.container {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
}

.public-header {
    background: rgba(255,255,255,0.88);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
    backdrop-filter: blur(10px);
}

.header-row {
    min-height: 72px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
}

.brand, .admin-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.brand small, .admin-brand small {
    display: block;
    color: var(--muted);
    font-size: 12px;
}

.brand-mark {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border-radius: 14px;
    background: var(--dark);
    color: #fff;
    font-weight: 800;
    box-shadow: var(--shadow);
}

.public-nav {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.public-nav a {
    text-decoration: none;
    color: var(--muted);
    font-size: 14px;
}

.public-main {
    width: min(1120px, calc(100% - 32px));
    margin: 36px auto;
}

.hero-card {
    background: linear-gradient(135deg, #fff, #f7efe4);
    border: 1px solid var(--border);
    border-radius: 28px;
    padding: 42px;
    box-shadow: var(--shadow);
    display: grid;
    grid-template-columns: 1.35fr 0.75fr;
    gap: 32px;
    align-items: center;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: .14em;
    font-size: 12px;
    color: var(--accent);
    font-weight: 700;
}

.hero-card h1 {
    font-size: clamp(36px, 5vw, 62px);
    line-height: 1;
    margin: 12px 0;
}

.hero-text {
    color: var(--muted);
    font-size: 18px;
    max-width: 700px;
}

.hero-actions, .topbar-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 16px;
    border-radius: 12px;
    text-decoration: none;
    border: 1px solid var(--border);
    cursor: pointer;
}

.btn-dark {
    background: var(--dark);
    color: #fff;
    border-color: var(--dark);
}

.btn-light {
    background: #fff;
    color: var(--text);
}

.symbol-card, .service-card, .page-card, .admin-card, .stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 22px;
    padding: 24px;
    box-shadow: var(--shadow);
}

.lotus-symbol {
    width: 88px;
    height: 88px;
    display: grid;
    place-items: center;
    border-radius: 30px;
    background: var(--accent-soft);
    color: var(--accent);
    font-size: 44px;
    margin-bottom: 16px;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-top: 24px;
}

.service-card code, code {
    background: #f0eee8;
    padding: 3px 7px;
    border-radius: 7px;
}

.service-card h3 {
    margin-bottom: 4px;
}

.service-card p, .muted {
    color: var(--muted);
}

.public-footer {
    border-top: 1px solid var(--border);
    padding: 28px 0;
    background: #fff;
}

.footer-grid {
    display: flex;
    justify-content: space-between;
    gap: 20px;
}

/* Admin shell */
.admin-shell {
    display: grid;
    grid-template-columns: 270px 1fr;
    min-height: 100vh;
}

.admin-sidebar {
    background: #111;
    color: #fff;
    padding: 22px;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.admin-brand {
    color: #fff;
    margin-bottom: 28px;
}

.side-nav {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.side-nav a {
    color: #d6d6d6;
    text-decoration: none;
    padding: 10px 12px;
    border-radius: 12px;
}

.side-nav a:hover,
.side-nav a.is-active {
    background: rgba(255,255,255,0.12);
    color: #fff;
}

.side-label {
    color: #9d9d9d;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .12em;
    margin: 18px 8px 4px;
}

.admin-main-shell {
    min-width: 0;
}

.admin-topbar {
    background: rgba(255,255,255,.92);
    border-bottom: 1px solid var(--border);
    padding: 22px 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    position: sticky;
    top: 0;
    z-index: 5;
    backdrop-filter: blur(10px);
}

.admin-topbar h1 {
    margin: 0 0 4px;
}

.admin-content {
    padding: 30px;
}

.user-pill {
    background: var(--surface-soft);
    border: 1px solid var(--border);
    padding: 9px 12px;
    border-radius: 999px;
    color: var(--muted);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.stat-card span {
    color: var(--muted);
    display: block;
}

.stat-card strong {
    display: block;
    font-size: 40px;
    margin-top: 8px;
}

.action-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.action-grid a {
    border: 1px solid var(--border);
    background: var(--surface-soft);
    padding: 14px;
    border-radius: 14px;
    text-decoration: none;
}

.admin-card {
    margin-top: 18px;
}

.check-list li {
    margin: 8px 0;
}

.subscribe-form {
    display: grid;
    gap: 10px;
    max-width: 620px;
}

.subscribe-form input, .subscribe-form select {
    width: 100%;
    padding: 11px;
    border: 1px solid var(--border);
    border-radius: 12px;
}

.result-box {
    background: #111;
    color: #e9e9e9;
    padding: 16px;
    border-radius: 14px;
    margin-top: 20px;
    white-space: pre-wrap;
    overflow-x: auto;
}

@media (max-width: 900px) {
    .hero-card, .service-grid, .stats-grid, .action-grid {
        grid-template-columns: 1fr;
    }

    .admin-shell {
        grid-template-columns: 1fr;
    }

    .admin-sidebar {
        position: relative;
        height: auto;
    }

    .admin-topbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .header-row, .footer-grid {
        flex-direction: column;
        align-items: flex-start;
    }
}


/* Phase 3H: shared admin page elements */
.admin-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 18px 0;
    background: var(--surface);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 0 0 1px var(--border);
}

.admin-content th,
.admin-content td {
    border-bottom: 1px solid var(--border);
    padding: 11px 12px;
    text-align: left;
    vertical-align: top;
}

.admin-content th {
    background: var(--surface-soft);
    color: var(--text);
    font-weight: 700;
}

.admin-content tr:last-child td {
    border-bottom: 0;
}

.admin-content form {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 16px 0;
    align-items: center;
}

.admin-content input,
.admin-content select,
.admin-content textarea {
    padding: 10px 11px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #fff;
    max-width: 100%;
}

.admin-content button,
.admin-content .button {
    padding: 10px 14px;
    border: 0;
    border-radius: 12px;
    background: var(--dark);
    color: #fff;
    cursor: pointer;
}

.admin-content pre {
    white-space: pre-wrap;
    background: #f7f5ef;
    padding: 12px;
    border-radius: 12px;
    max-width: 100%;
    overflow-x: auto;
}

.admin-content .ok,
.admin-content .bad,
.admin-content .err,
.admin-content .note {
    display: block;
    padding: 12px 14px;
    border-radius: 14px;
    margin: 14px 0;
}

.admin-content .ok { background: #e8fff0; border: 1px solid #9de0b0; color: #14592a; }
.admin-content .bad,
.admin-content .err { background: #ffecec; border: 1px solid #e4a0a0; color: #8a1f1f; }
.admin-content .note { background: #fffbe8; border: 1px solid #eadc96; color: #5f4e0b; }

.admin-content .status {
    display: inline-block;
    padding: 3px 9px;
    border-radius: 999px;
    background: #eeeae1;
    color: var(--text);
}

.admin-content > h1:first-child {
    display: none;
}

.admin-content .page-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 18px;
}

.admin-content .page-actions a {
    text-decoration: none;
    border: 1px solid var(--border);
    background: #fff;
    border-radius: 12px;
    padding: 8px 12px;
}

/* Phase 8H: Developer Documentation Center */
.dev-docs-header {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    align-items: flex-start;
}

.dev-docs-header h2 {
    margin: 4px 0 8px;
}

.dev-docs-stats {
    display: grid;
    gap: 8px;
    min-width: 240px;
}

.dev-docs-stats span,
.dev-docs-meta-grid span {
    display: block;
    background: var(--surface-soft);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 10px 12px;
    color: var(--muted);
}

.dev-docs-stats strong,
.dev-docs-meta-grid strong {
    display: block;
    color: var(--text);
    font-size: 13px;
    margin-bottom: 3px;
}

.dev-docs-filter input[type="search"] {
    min-width: min(460px, 100%);
}

.dev-docs-meta-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin: 18px 0;
}

.dev-docs-detail h3 {
    margin-top: 24px;
}

.dev-code {
    max-height: 680px;
    overflow: auto;
    font-size: 13px;
    line-height: 1.45;
}

.admin-content tr.is-selected-row td {
    background: var(--accent-soft);
}

@media (max-width: 900px) {
    .dev-docs-header,
    .dev-docs-meta-grid {
        display: block;
    }

    .dev-docs-stats,
    .dev-docs-meta-grid span {
        margin-top: 8px;
    }
}

/* Phase 8H.1: Individual developer doc pages + manual page renderer */
.dev-docs-card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-top: 18px;
}

.dev-docs-card {
    display: block;
    text-decoration: none;
    color: var(--text);
    border: 1px solid var(--border);
    background: var(--surface-soft);
    border-radius: 18px;
    padding: 16px;
}

.dev-docs-card:hover {
    border-color: var(--accent);
}

.dev-docs-card small,
.dev-docs-card span {
    display: block;
    color: var(--muted);
}

.dev-docs-card strong {
    display: block;
    margin: 6px 0;
}

.dev-docs-page-renderer h1 {
    margin-top: 0;
}

.dev-docs-page-renderer h2,
.dev-docs-page-renderer h3 {
    margin-top: 28px;
}

.dev-docs-ref-card,
.dev-docs-snippet,
.dev-docs-callout {
    border: 1px solid var(--border);
    background: var(--surface-soft);
    border-radius: 16px;
    padding: 16px;
    margin: 16px 0;
}

.dev-docs-ref-card h4 {
    margin: 0 0 8px;
}

.dev-docs-snippet-head {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: center;
    margin-bottom: 10px;
    color: var(--muted);
}

.dev-docs-snippet-head strong {
    color: var(--text);
}

.dev-docs-functions {
    margin: 16px 0;
}

@media (max-width: 900px) {
    .dev-docs-card-grid {
        grid-template-columns: 1fr;
    }

    .dev-docs-snippet-head {
        display: block;
    }
}

/* Phase 8H.2: Tree-based documentation table of contents */
.dev-docs-layout {
    display: grid;
    grid-template-columns: minmax(260px, 340px) 1fr;
    gap: 18px;
    align-items: start;
}

.dev-docs-sidebar {
    position: sticky;
    top: 82px;
    max-height: calc(100vh - 110px);
    overflow: auto;
}

.dev-docs-sidebar h3 {
    margin-top: 0;
}

.dev-docs-toc-section {
    margin-top: 18px;
}

.dev-docs-toc-section h4 {
    margin: 0 0 8px;
    font-size: 14px;
    letter-spacing: .02em;
    text-transform: uppercase;
    color: var(--muted);
}

.dev-docs-tree {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.dev-docs-tree .dev-docs-tree {
    padding-left: 14px;
    border-left: 1px solid var(--border);
    margin: 4px 0 4px 4px;
}

.dev-docs-tree-item {
    margin: 3px 0;
    font-size: 13px;
}

.dev-docs-tree-folder {
    display: inline-block;
    font-weight: 700;
    color: var(--text);
    padding: 3px 0;
}

.dev-docs-tree-item.file a {
    display: inline-block;
    text-decoration: none;
    padding: 4px 6px;
    border-radius: 8px;
}

.dev-docs-tree-item.file a:hover,
.dev-docs-tree-item.active > a:first-child {
    background: var(--accent-soft);
}

.dev-docs-tree-doclink {
    font-size: 11px;
    border: 1px solid var(--border);
    background: var(--surface-soft);
    color: var(--muted);
    margin-left: 4px;
}

@media (max-width: 1000px) {
    .dev-docs-layout {
        grid-template-columns: 1fr;
    }

    .dev-docs-sidebar {
        position: static;
        max-height: none;
    }
}

/* Phase 8H.5: full-width developer docs reader with sidebar TOC */
.dev-docs-body {
    background: var(--bg);
    color: var(--text);
    margin: 0;
}

.dev-reader-shell {
    min-height: 100vh;
}

.dev-reader-topbar {
    position: sticky;
    top: 0;
    z-index: 30;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
    padding: 12px 22px;
    border-bottom: 1px solid var(--border);
    background: rgba(250, 248, 242, .96);
    backdrop-filter: blur(10px);
}

.dev-reader-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-right: 10px;
    padding: 8px 11px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--surface);
    color: var(--text);
    text-decoration: none;
    font-size: 13px;
    font-weight: 700;
}

.dev-reader-back:hover {
    border-color: var(--accent);
}

.dev-reader-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--muted);
    font-size: 13px;
    min-width: 0;
}

.dev-reader-brand span {
    color: var(--text);
    font-weight: 800;
    letter-spacing: .04em;
    text-transform: uppercase;
}

.dev-reader-brand code {
    max-width: 420px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.dev-reader-grid {
    display: grid;
    grid-template-columns: 320px minmax(0, 1fr);
    min-height: calc(100vh - 58px);
}

.dev-reader-sidebar {
    position: sticky;
    top: 58px;
    align-self: start;
    height: calc(100vh - 58px);
    overflow: auto;
    padding: 18px 16px 28px;
    border-right: 1px solid var(--border);
    background: var(--surface);
}

.dev-reader-sidebar-head {
    border-bottom: 1px solid var(--border);
    padding-bottom: 14px;
    margin-bottom: 14px;
}

.dev-reader-sidebar-head strong,
.dev-reader-sidebar-head span {
    display: block;
}

.dev-reader-sidebar-head span {
    margin-top: 4px;
    color: var(--muted);
    font-size: 12px;
}

.dev-reader-toc-section {
    margin: 16px 0 22px;
}

.dev-reader-toc-section h3 {
    margin: 0 0 9px;
    font-size: 12px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: .09em;
}

.dev-reader-sidebar .dev-docs-tree {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.dev-reader-sidebar .dev-docs-tree .dev-docs-tree {
    padding-left: 13px;
    border-left: 1px solid var(--border);
    margin: 4px 0 4px 7px;
}

.dev-reader-sidebar .dev-docs-tree-item {
    margin: 2px 0;
    font-size: 13px;
    line-height: 1.35;
}

.dev-reader-sidebar .dev-docs-tree-folder {
    display: block;
    padding: 5px 6px;
    color: var(--text);
    font-weight: 800;
    border-radius: 8px;
}

.dev-reader-sidebar .dev-docs-tree-item.file a:first-child {
    display: block;
    padding: 6px 7px;
    border-radius: 8px;
    text-decoration: none;
    color: var(--text);
}

.dev-reader-sidebar .dev-docs-tree-item.file a:first-child code {
    white-space: normal;
    word-break: break-word;
}

.dev-reader-sidebar .dev-docs-tree-item.file a:first-child:hover,
.dev-reader-sidebar .dev-docs-tree-item.active > a:first-child {
    background: var(--accent-soft);
}

.dev-reader-sidebar .dev-docs-tree-doclink {
    display: inline-block;
    margin: 2px 0 4px 7px;
    padding: 2px 6px;
    border-radius: 999px;
    font-size: 11px;
}

.dev-reader-main {
    padding: 28px clamp(18px, 4vw, 56px) 52px;
    min-width: 0;
}

.dev-reader-page {
    max-width: 1040px;
    margin: 0 auto;
}

.dev-reader-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 22px;
    padding: clamp(20px, 3vw, 34px);
    margin-bottom: 18px;
    box-shadow: 0 12px 30px rgba(31, 27, 20, .05);
}

.dev-reader-card h1 {
    margin: 0 0 12px;
    font-size: clamp(28px, 3.2vw, 42px);
    line-height: 1.12;
}

.dev-reader-card h2 {
    margin-top: 26px;
    font-size: 22px;
}

.dev-reader-card p,
.dev-reader-card li {
    font-size: 15px;
    line-height: 1.68;
}

.dev-reader-path {
    margin-bottom: 20px;
}

.dev-meta-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin: 18px 0;
}

.dev-meta-list div {
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--surface-soft);
    padding: 10px 12px;
    min-width: 0;
}

.dev-meta-list dt {
    margin: 0 0 4px;
    color: var(--muted);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .04em;
    text-transform: uppercase;
}

.dev-meta-list dd {
    margin: 0;
    font-weight: 700;
    overflow-wrap: anywhere;
}

.dev-reader-note {
    border: 1px solid var(--border);
    background: var(--surface-soft);
    border-radius: 14px;
    padding: 11px 13px;
}

.dev-reader-section {
    padding: 0;
    overflow: hidden;
}

.dev-reader-section > summary {
    cursor: pointer;
    list-style: none;
    padding: 17px 22px;
    border-bottom: 1px solid var(--border);
    font-weight: 900;
    font-size: 16px;
}

.dev-reader-section > summary::-webkit-details-marker {
    display: none;
}

.dev-reader-section > summary::before {
    content: '▸';
    display: inline-block;
    margin-right: 8px;
    transform: translateY(-1px);
}

.dev-reader-section[open] > summary::before {
    content: '▾';
}

.dev-reader-section > *:not(summary) {
    margin-left: 24px;
    margin-right: 24px;
}

.dev-reader-section > :last-child {
    margin-bottom: 24px;
}

.dev-docs-text-block {
    white-space: pre-wrap;
    line-height: 1.6;
    background: var(--surface-soft);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 14px;
    overflow: auto;
}

.dev-docs-plain-list {
    padding-left: 22px;
}

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

.dev-code {
    max-height: 72vh;
    overflow: auto;
    font-size: 13px;
    line-height: 1.55;
    border-radius: 16px;
}

@media (max-width: 1100px) {
    .dev-reader-grid {
        grid-template-columns: 1fr;
    }

    .dev-reader-sidebar {
        position: static;
        height: auto;
        max-height: 45vh;
        border-right: 0;
        border-bottom: 1px solid var(--border);
    }

    .dev-reader-brand code {
        display: none;
    }
}

@media (max-width: 700px) {
    .dev-reader-topbar,
    .dev-reader-brand {
        display: block;
    }

    .dev-reader-back {
        margin-bottom: 8px;
    }

    .dev-meta-list,
    .dev-docs-stats {
        grid-template-columns: 1fr;
        display: grid;
    }
}