/* 7eyes Docs — developer documentation hub */
:root {
    --docs-bg: #0f1117;
    --docs-surface: #161b26;
    --docs-border: rgba(123, 104, 238, 0.22);
    --docs-accent: #7b68ee;
    --docs-accent-soft: rgba(123, 104, 238, 0.12);
    --docs-text: #e8eaef;
    --docs-muted: #9aa3b5;
    --docs-code-bg: #1c2230;
    --docs-sidebar-w: 260px;
    --docs-top-h: 56px;
}

.docs-body {
    margin: 0;
    font-family: "Source Sans Pro", Helvetica, sans-serif;
    background: var(--docs-bg);
    color: var(--docs-text);
    line-height: 1.65;
    font-size: 16px;
}

.docs-topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--docs-top-h);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0 1.25rem;
    background: rgba(15, 17, 23, 0.92);
    border-bottom: 1px solid var(--docs-border);
    backdrop-filter: blur(10px);
}

.docs-topbar-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    flex: 1;
    min-width: 0;
}

.docs-admin-box {
    display: flex;
    align-items: center;
    gap: 0.2rem;
    padding: 0.15rem 0.35rem 0.15rem 0.55rem;
    border-radius: 8px;
    border: 1px solid var(--docs-border);
    background: var(--docs-surface);
    flex-shrink: 0;
}

.docs-admin-label {
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--docs-muted);
    margin-right: 0.15rem;
    padding-right: 0.35rem;
    border-right: 1px solid var(--docs-border);
}

.docs-admin-btn {
    display: inline-block;
    padding: 0.4rem 0.75rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-family: inherit;
    color: var(--docs-muted);
    background: transparent;
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: color 0.15s, background 0.15s, border-color 0.15s;
}

.docs-admin-btn:hover {
    color: var(--docs-text);
    background: var(--docs-accent-soft);
    border-color: var(--docs-border);
}


.docs-brand {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    text-decoration: none;
    color: var(--docs-text);
    font-weight: 600;
}

.docs-brand .brand-seven { color: var(--docs-accent); }
.docs-brand .brand-eyes { color: #fff; }

.docs-tabs {
    display: flex;
    gap: 0.25rem;
}

.docs-tab {
    padding: 0.4rem 0.9rem;
    border-radius: 6px;
    font-size: 0.85rem;
    color: var(--docs-muted);
    text-decoration: none;
    border: 1px solid transparent;
    transition: color 0.15s, background 0.15s, border-color 0.15s;
}

.docs-tab:hover,
.docs-tab.is-active {
    color: var(--docs-text);
    background: var(--docs-accent-soft);
    border-color: var(--docs-border);
}

.docs-topbar-actions a {
    font-size: 0.85rem;
    color: var(--docs-muted);
    text-decoration: none;
    margin-left: 1rem;
}

.docs-topbar-actions a:hover { color: var(--docs-accent); }

.docs-layout {
    display: flex;
    padding-top: var(--docs-top-h);
    min-height: 100vh;
}

.docs-sidebar {
    position: fixed;
    top: var(--docs-top-h);
    left: 0;
    width: var(--docs-sidebar-w);
    height: calc(100vh - var(--docs-top-h));
    overflow-y: auto;
    padding: 1.25rem 0.75rem 2rem;
    border-right: 1px solid var(--docs-border);
    background: var(--docs-surface);
}

.docs-sidebar h4 {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--docs-muted);
    margin: 1.25rem 0 0.5rem 0.75rem;
}

.docs-sidebar h4:first-child { margin-top: 0; }

.docs-sidebar a {
    display: block;
    padding: 0.35rem 0.75rem;
    border-radius: 6px;
    font-size: 0.88rem;
    color: var(--docs-muted);
    text-decoration: none;
}

.docs-sidebar a:hover,
.docs-sidebar a.is-active {
    color: var(--docs-text);
    background: var(--docs-accent-soft);
}

.docs-main {
    margin-left: var(--docs-sidebar-w);
    flex: 1;
    max-width: 52rem;
    padding: 2rem 2.5rem 4rem;
}

.docs-main h1 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    line-height: 1.25;
}

.docs-main h2 {
    font-size: 1.35rem;
    font-weight: 600;
    margin: 2.5rem 0 0.75rem;
    padding-top: 1rem;
    border-top: 1px solid var(--docs-border);
}

.docs-main h2:first-of-type { border-top: none; padding-top: 0; margin-top: 1.5rem; }

.docs-main h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin: 1.5rem 0 0.5rem;
    color: #c5cae0;
}

.docs-lead { color: var(--docs-muted); font-size: 1.05rem; margin-bottom: 1.5rem; }

.docs-badge {
    display: inline-block;
    font-size: 0.72rem;
    padding: 0.2rem 0.55rem;
    border-radius: 4px;
    background: var(--docs-accent-soft);
    color: var(--docs-accent);
    border: 1px solid var(--docs-border);
    margin-right: 0.35rem;
    vertical-align: middle;
}

.docs-callout {
    padding: 1rem 1.1rem;
    border-radius: 8px;
    border-left: 3px solid var(--docs-accent);
    background: var(--docs-accent-soft);
    margin: 1rem 0;
    font-size: 0.92rem;
}

.docs-callout.warn { border-left-color: #e6a23c; background: rgba(230, 162, 60, 0.1); }

.docs-table-wrap { overflow-x: auto; margin: 1rem 0; }

table.docs-table {
    width: 100%;
    font-size: 0.88rem;
    border-collapse: collapse;
}

.docs-table th,
.docs-table td {
    border: 1px solid var(--docs-border);
    padding: 0.55rem 0.75rem;
    text-align: left;
}

.docs-table th {
    background: var(--docs-surface);
    color: var(--docs-muted);
    font-weight: 600;
}

.docs-table code { font-size: 0.82rem; }

pre.docs-code {
    background: var(--docs-code-bg);
    border: 1px solid var(--docs-border);
    border-radius: 8px;
    padding: 1rem 1.1rem;
    overflow-x: auto;
    font-size: 0.82rem;
    line-height: 1.5;
    margin: 0.75rem 0 1.25rem;
}

pre.docs-code code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    color: #c8d0e0;
}

.docs-main p { margin: 0.75rem 0; }

.docs-main ul, .docs-main ol {
    margin: 0.5rem 0 1rem;
    padding-left: 1.35rem;
}

.docs-main li { margin: 0.35rem 0; }

.docs-main li.docs-arch-auth {
    white-space: nowrap;
    font-size: 0.92rem;
    letter-spacing: -0.015em;
}

.docs-main li.docs-arch-auth code {
    font-size: 0.88em;
}

@media (max-width: 960px) {
    .docs-main li.docs-arch-auth {
        white-space: normal;
        font-size: inherit;
        letter-spacing: normal;
    }
}

.docs-main a { color: var(--docs-accent); }

.docs-steps {
    counter-reset: step;
    list-style: none;
    padding-left: 0;
}

.docs-steps li {
    position: relative;
    padding-left: 2.5rem;
    margin: 1rem 0;
}

.docs-steps li::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 0;
    width: 1.65rem;
    height: 1.65rem;
    line-height: 1.65rem;
    text-align: center;
    border-radius: 50%;
    background: var(--docs-accent);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 600;
}

.docs-section[data-tier="product"] .docs-api-only { display: none; }
.docs-section[data-tier="api"] .docs-product-only { display: none; }

@media (max-width: 900px) {
    .docs-sidebar {
        display: none;
    }
    .docs-main {
        margin-left: 0;
        padding: 1.5rem 1.25rem 3rem;
    }
    .docs-tabs { display: none; }
    .docs-admin-label { display: none; }
    .docs-admin-box { padding-left: 0.35rem; }
}

/* ===== Architecture Spec viewer ===== */
.docs-admin-btn.is-active {
    color: var(--docs-text);
    background: var(--docs-accent-soft);
    border-color: var(--docs-border);
}

.spec-login-gate {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - var(--docs-top-h));
    margin-top: var(--docs-top-h);
    padding: 2rem 1.25rem;
}

.spec-login-card {
    max-width: 420px;
    width: 100%;
    padding: 2rem 2.25rem;
    border-radius: 12px;
    border: 1px solid var(--docs-border);
    background: var(--docs-surface);
    text-align: center;
}

.spec-login-card h1 {
    font-size: 1.35rem;
    margin: 0 0 0.75rem;
    font-weight: 600;
}

.spec-login-intro {
    margin: 0 0 1.25rem;
}

.spec-login-lead {
    color: var(--docs-muted);
    font-size: 0.95rem;
    line-height: 1.5;
    margin: 0;
}

.spec-login-intro .spec-login-lead + .spec-login-lead {
    margin-top: 0.4rem;
}

.spec-login-card p {
    color: var(--docs-muted);
    font-size: 0.95rem;
    margin: 0 0 1rem;
}

.spec-login-error {
    color: #f87171;
    font-size: 0.88rem;
    margin-bottom: 1rem !important;
}

.spec-login-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.75rem 1rem;
    border: none;
    border-radius: 8px;
    background: #fff;
    color: #1e293b;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
}

.spec-login-btn:hover { background: #f1f5f9; }

.spec-login-hint {
    font-size: 0.78rem !important;
    margin-top: 1rem !important;
}

.spec-back-link {
    display: inline-block;
    margin-top: 1.5rem;
    font-size: 0.88rem;
    color: var(--docs-muted);
    text-decoration: none;
}

.spec-back-link:hover { color: var(--docs-accent); }

.spec-admin-email {
    font-size: 0.82rem;
    color: var(--docs-muted);
    margin-right: 0.5rem;
}

.spec-layout .spec-sidebar {
    width: 300px;
}

.spec-layout .spec-main {
    margin-left: 300px;
    max-width: none;
}

/* Spec tree sidebar */
.spec-tree {
    padding: 0.25rem 0;
}

.spec-tree-toggle,
.spec-tree-leaf {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    width: 100%;
    padding: 0.32rem 0.5rem 0.32rem calc(0.5rem + var(--depth, 0) * 0.85rem);
    border: none;
    border-radius: 6px;
    font-size: 0.84rem;
    font-family: inherit;
    text-align: left;
    background: transparent;
    color: var(--docs-muted);
    cursor: pointer;
    text-decoration: none;
    box-sizing: border-box;
}

.spec-tree-toggle:hover,
.spec-tree-leaf:hover {
    color: var(--docs-text);
    background: var(--docs-accent-soft);
}

.spec-tree-leaf.is-active {
    color: var(--docs-text);
    background: var(--docs-accent-soft);
    font-weight: 600;
}

.spec-tree-group-label {
    flex: 1;
    font-weight: 600;
    font-size: 0.82rem;
}

.spec-tree-chevron {
    font-size: 0.6rem;
    width: 0.75rem;
    transition: transform 0.15s ease;
    flex-shrink: 0;
    opacity: 0.7;
}

.spec-tree-chevron.is-open {
    transform: rotate(90deg);
}

.spec-tree-children {
    display: none;
}

.spec-tree-children.is-open {
    display: block;
}

.spec-tree-group > .spec-tree-toggle {
    color: var(--docs-text);
    margin-top: 0.15rem;
}

.spec-tree > .spec-tree-group > .spec-tree-toggle {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--docs-muted);
    font-weight: 600;
    margin-top: 0.85rem;
}

.spec-tree > .spec-tree-group:first-child > .spec-tree-toggle {
    margin-top: 0;
}

.spec-main-header {
    margin-bottom: 1.25rem;
}

.spec-main-header h1 {
    font-size: 1.5rem;
    margin: 0.35rem 0 0;
}

.spec-loading {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--docs-muted);
    padding: 2rem 0;
}

.spec-content { min-height: 200px; }

.spec-md h1 { font-size: 1.75rem; margin-top: 0; }
.spec-md h2 { font-size: 1.25rem; }
.spec-md table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
    margin: 1rem 0;
}
.spec-md th, .spec-md td {
    border: 1px solid var(--docs-border);
    padding: 0.45rem 0.65rem;
    text-align: left;
}
.spec-md th { background: var(--docs-code-bg); }
.spec-md pre {
    background: var(--docs-code-bg);
    border: 1px solid var(--docs-border);
    border-radius: 8px;
    padding: 1rem;
    overflow-x: auto;
    font-size: 0.85rem;
}
.spec-md code {
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.88em;
    background: var(--docs-code-bg);
    padding: 0.12em 0.35em;
    border-radius: 4px;
}
.spec-md pre code { background: none; padding: 0; }
.spec-md blockquote {
    border-left: 3px solid var(--docs-accent);
    margin: 1rem 0;
    padding: 0.25rem 0 0.25rem 1rem;
    color: var(--docs-muted);
}
.spec-md .mermaid {
    margin: 1.25rem 0;
    text-align: center;
}
.spec-error {
    padding: 1.5rem;
    border-radius: 8px;
    background: rgba(248, 113, 113, 0.1);
    border: 1px solid rgba(248, 113, 113, 0.35);
    color: #fca5a5;
}

@media (max-width: 900px) {
    .spec-layout .spec-sidebar { display: none; }
    .spec-layout .spec-main { margin-left: 0; }
}

/* ── Native app (iOS/Android Capacitor): topbar 숨김 + 타이틀 뒤로가기 ── */
.docs-native-back {
    display: none;
}

html.btk-native-app .docs-topbar {
    display: none !important;
}

html.btk-native-app .docs-layout {
    padding-top: 0;
    min-height: 100vh;
}

html.btk-native-app .docs-sidebar {
    top: env(safe-area-inset-top, 0px);
    height: calc(100vh - env(safe-area-inset-top, 0px));
}

html.btk-native-app .docs-title-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

html.btk-native-app .docs-main {
    /* body(btk-mobile.css)가 safe-area 처리 — 추가 inset 중복 금지 */
    padding-top: 0.75rem;
}

html.btk-native-app .docs-native-back {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 40px;
    height: 40px;
    min-width: 40px;
    min-height: 40px;
    padding: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.14);
    color: #fff;
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: background 0.18s, border-color 0.18s;
}

html.btk-native-app .docs-native-back:active {
    background: rgba(255, 255, 255, 0.18);
    border-color: rgba(255, 255, 255, 0.28);
}

@media (max-width: 900px) {
    html.btk-native-app .docs-main {
        padding-top: 0.5rem;
    }
}