/* ── TLS Documentation — extends 7ks.ai style.css ── */

/* Doc layout: sidebar + content */
.doc-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 3rem;
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 2rem;
    min-height: calc(100vh - 200px);
}

/* Sidebar */
.doc-sidebar {
    position: sticky;
    top: 88px;
    align-self: start;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
    padding: 1.5rem 0;
    border-right: 1px solid var(--border);
    scrollbar-width: thin;
    scrollbar-color: rgba(0,0,0,0.05) transparent;
}
.doc-sidebar::-webkit-scrollbar { width: 4px; }
.doc-sidebar::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.05); border-radius: 4px; }

.doc-sidebar-title {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-dim);
    padding: 0 1rem;
    margin-bottom: 0.75rem;
}
.doc-sidebar-nav { list-style: none; }
.doc-sidebar-nav li { margin-bottom: 1px; }
.doc-sidebar-nav a {
    display: block;
    padding: 0.5rem 1rem;
    font-size: 0.88rem;
    color: var(--text-muted);
    border-radius: 8px;
    transition: all 0.2s;
    border-left: 2px solid transparent;
}
.doc-sidebar-nav a:hover {
    color: var(--text);
    background: var(--bg-card);
    opacity: 1;
}
.doc-sidebar-nav a.active {
    color: var(--blue);
    border-left-color: var(--blue);
    background: rgba(26,138,184,0.04);
    font-weight: 500;
    opacity: 1;
}
.doc-sidebar-nav .nav-section {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-dim);
    padding: 1.25rem 1rem 0.4rem;
    pointer-events: none;
}

/* Doc content */
.doc-content {
    padding: 2rem 0 4rem;
    max-width: 860px;
}
.doc-content h1 {
    font-size: 2.8rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}
.doc-content h1 .gradient {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.doc-content h2 {
    font-size: 1.7rem;
    font-weight: 700;
    margin: 3rem 0 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    letter-spacing: -0.01em;
}
.doc-content h2:first-of-type {
    border-top: none;
    padding-top: 0;
}
.doc-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 2rem 0 0.75rem;
    color: var(--text);
}
.doc-content h4 {
    font-size: 1.05rem;
    font-weight: 600;
    margin: 1.5rem 0 0.5rem;
    color: var(--text);
}
.doc-content p {
    color: rgba(26,26,46,0.7);
    line-height: 1.75;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}
.doc-content strong { color: var(--text); }
.doc-content a { color: var(--blue); }
.doc-content a:hover { text-decoration: underline; }

/* Lead paragraph */
.doc-lead {
    font-size: 1.15rem;
    color: var(--text-muted);
    font-weight: 300;
    line-height: 1.7;
    margin-bottom: 2rem;
    max-width: 700px;
}

/* Version badge */
.doc-badge {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 500;
    background: rgba(26,138,184,0.05);
    color: var(--blue);
    margin-bottom: 1.5rem;
}

/* Code blocks */
.doc-content pre {
    background: rgba(245,245,250,1);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
    overflow-x: auto;
    margin: 1.25rem 0 1.5rem;
    font-size: 0.85rem;
    line-height: 1.65;
}
.doc-content pre code {
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    color: rgba(26,26,46,0.65);
    background: none;
    padding: 0;
}
.doc-content code {
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    background: rgba(0,0,0,0.03);
    padding: 2px 7px;
    border-radius: 5px;
    font-size: 0.88em;
    color: var(--blue);
}

/* Syntax colors */
.hl-kw { color: #b05a96; }      /* keywords */
.hl-fn { color: #2aa4d8; }      /* functions */
.hl-str { color: #f6ae56; }     /* strings */
.hl-cm { color: rgba(26,26,46,0.3); } /* comments */
.hl-num { color: #7ec699; }     /* numbers */
.hl-type { color: #e06c75; }    /* types */

/* Tables */
.doc-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.25rem 0 1.5rem;
    font-size: 0.88rem;
}
.doc-content th {
    text-align: left;
    padding: 0.75rem 1rem;
    font-weight: 600;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-muted);
    background: rgba(0,0,0,0.02);
    border-bottom: 1px solid var(--border);
}
.doc-content td {
    padding: 0.65rem 1rem;
    border-bottom: 1px solid var(--border);
    color: rgba(26,26,46,0.65);
    vertical-align: top;
}
.doc-content tr:hover td {
    background: rgba(0,0,0,0.015);
}
.doc-content td code {
    font-size: 0.82rem;
}

/* Lists */
.doc-content ul, .doc-content ol {
    margin: 0.75rem 0 1.25rem 1.25rem;
    color: rgba(26,26,46,0.7);
}
.doc-content li {
    margin-bottom: 0.4rem;
    font-size: 0.95rem;
    line-height: 1.6;
}
.doc-content li code {
    font-size: 0.85em;
}

/* Blockquotes / callouts */
.doc-callout {
    border-left: 3px solid var(--purple);
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    background: rgba(122,42,143,0.04);
    border-radius: 0 12px 12px 0;
    font-size: 0.92rem;
    color: var(--text-muted);
}
.doc-callout strong { color: #b05a96; }

.doc-callout.info {
    border-left-color: var(--blue);
    background: rgba(26,138,184,0.04);
}
.doc-callout.info strong { color: var(--blue); }

.doc-callout.warn {
    border-left-color: var(--orange);
    background: rgba(246,174,86,0.06);
}
.doc-callout.warn strong { color: var(--orange); }

/* Stat cards (overview page) */
.doc-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin: 2rem 0;
}
.doc-stat {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.25rem;
    text-align: center;
    transition: all 0.3s;
}
.doc-stat:hover {
    background: var(--bg-card-hover);
    transform: translateY(-2px);
}
.doc-stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}
.doc-stat-label {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Module cards */
.mod-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin: 1.5rem 0;
}
.mod-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.25rem;
    transition: all 0.3s;
}
.mod-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(255,255,255,0.12);
}
.mod-card h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin: 0 0 0.35rem;
    color: var(--text);
}
.mod-card h4 code {
    color: var(--blue);
    font-size: 0.85rem;
}
.mod-card p {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.5;
}
.mod-card .mod-tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.68rem;
    font-weight: 500;
    margin-top: 0.5rem;
}
.mod-tag.infra { background: rgba(26,138,184,0.05); color: var(--blue); }
.mod-tag.data { background: rgba(122,42,143,0.05); color: #b05a96; }
.mod-tag.logic { background: rgba(212,146,46,0.05); color: var(--orange); }
.mod-tag.system { background: rgba(0,0,0,0.05); color: var(--text-muted); }
.mod-tag.net { background: rgba(100,170,130,0.06); color: #7ec699; }
.mod-tag.security { background: rgba(200,80,90,0.06); color: #e06c75; }
.mod-tag.iot { background: rgba(26,138,184,0.05); color: var(--blue); }

/* Architecture diagram (ASCII art) */
.doc-diagram {
    background: rgba(245,245,250,1);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem 2rem;
    margin: 1.5rem 0;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.82rem;
    line-height: 1.5;
    color: rgba(26,26,46,0.55);
    overflow-x: auto;
    white-space: pre;
}
.doc-diagram .d-label { color: var(--blue); font-weight: 600; }
.doc-diagram .d-border { color: rgba(0,0,0,0.15); }
.doc-diagram .d-highlight { color: #b05a96; }
.doc-diagram .d-accent { color: var(--orange); }

/* Breadcrumb */
.doc-breadcrumb {
    font-size: 0.82rem;
    color: var(--text-dim);
    margin-bottom: 1.5rem;
}
.doc-breadcrumb a { color: var(--text-muted); }
.doc-breadcrumb span { margin: 0 0.4rem; }

/* Prev/Next navigation */
.doc-nav-footer {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}
.doc-nav-link {
    display: flex;
    flex-direction: column;
    padding: 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: all 0.3s;
    text-decoration: none;
    color: var(--text);
}
.doc-nav-link:hover {
    background: var(--bg-card-hover);
    border-color: rgba(255,255,255,0.12);
    transform: translateY(-2px);
    opacity: 1;
}
.doc-nav-link.next { text-align: right; }
.doc-nav-label {
    font-size: 0.75rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.35rem;
}
.doc-nav-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--blue);
}

/* On this page (right side TOC — optional) */
.doc-toc {
    position: sticky;
    top: 88px;
    font-size: 0.8rem;
}
.doc-toc-title {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 0.75rem;
}
.doc-toc a {
    display: block;
    padding: 0.3rem 0;
    color: var(--text-dim);
    transition: color 0.2s;
}
.doc-toc a:hover { color: var(--text-muted); opacity: 1; }

/* Responsive */
@media (max-width: 1024px) {
    .doc-layout {
        grid-template-columns: 220px 1fr;
        gap: 2rem;
    }
    .doc-stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .doc-layout {
        grid-template-columns: 1fr;
    }
    .doc-sidebar {
        position: relative;
        top: 0;
        max-height: none;
        border-right: none;
        border-bottom: 1px solid var(--border);
        padding: 1rem 0;
    }
    .doc-sidebar-nav {
        display: flex;
        flex-wrap: wrap;
        gap: 0.25rem;
    }
    .doc-sidebar-nav .nav-section { display: none; }
    .doc-sidebar-nav a {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
        border-left: none;
        border: 1px solid var(--border);
        border-radius: 20px;
    }
    .doc-sidebar-nav a.active {
        border-color: var(--blue);
        border-left-color: var(--blue);
    }
    .doc-content h1 { font-size: 2rem; }
    .doc-content h2 { font-size: 1.4rem; }
    .mod-grid { grid-template-columns: 1fr; }
    .doc-stats { grid-template-columns: 1fr 1fr; }
    .doc-nav-footer { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
    .doc-content h1 { font-size: 1.75rem; }
    .doc-stats { grid-template-columns: 1fr; }
}