/* ==========================================================
   MARM Memory — Documentation Site
   Brand: #060908 bg · #00e5b4 accent · JetBrains Mono + DM Sans
   ========================================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg:             #000000;
  --bg-sidebar:     #000000;
  --bg-surface:     #0C0E10;
  --bg-hover:       rgba(255, 255, 255, 0.04);
  --bg-code:        #08090A;
  --accent:         #00e5b4;
  --accent-dim:     #00c298;
  --accent-muted:   #008f70;
  --accent-glow:    rgba(0, 229, 180, 0.06);
  --accent-glow-hv: rgba(0, 229, 180, 0.12);
  --accent-border:  rgba(0, 229, 180, 0.20);
  --text:           #C1C8CD;
  --text-bright:    #EEEEEE;
  --text-muted:     #889096;
  --text-dim:       #6B7280;
  --border:         rgba(255, 255, 255, 0.06);
  --border-light:   rgba(255, 255, 255, 0.10);
  --sidebar-w:      280px;
  --sidebar-brand-h: 70px;
  --radius:         6px;
  --ease:           cubic-bezier(0.4, 0, 0.2, 1);
  --t:              200ms;
}

/* ---- Base ------------------------------------------------ */
html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Dot grid - modern subtle */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.015) 1px, transparent 0);
  background-size: 24px 24px;
  pointer-events: none;
  z-index: 0;
}

/* ---- Sidebar --------------------------------------------- */
#sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow: hidden;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease);
}

/* Brand block */
.sidebar-brand {
  height: var(--sidebar-brand-h);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  padding: 0 20px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
}

.brand-icon {
  width: 25px;
  height: 25px;
  object-fit: contain;
  flex-shrink: 0;
  display: block;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
  overflow: hidden;
}

.brand-name {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-bright);
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand-sub {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
}

/* Nav scrollable area */
#sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 16px 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border-light) transparent;
}

#sidebar-nav::-webkit-scrollbar { width: 3px; }
#sidebar-nav::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 2px; }

/* Group labels */
.nav-group { margin-top: 18px; }

.nav-group-label {
  display: block;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  padding: 8px 20px 8px;
  user-select: none;
}

/* Nav items */
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 17px;
  font-weight: 500;
  position: relative;
  border-left: 2px solid transparent;
  transition: color var(--t) var(--ease),
              background var(--t) var(--ease),
              border-color var(--t) var(--ease),
              padding-left var(--t) var(--ease);
}

.nav-item:hover {
  color: var(--text-bright);
  background: var(--bg-hover);
  padding-left: 22px;
}

.nav-item.active {
  color: var(--accent);
  background: rgba(0, 229, 180, 0.08);
  border-left-color: var(--accent);
  padding-left: 22px;
}

.nav-icon {
  font-size: 17px;
  width: 20px;
  text-align: center;
  flex-shrink: 0;
  opacity: 0.6;
  transition: opacity var(--t);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.nav-item:hover .nav-icon { opacity: 0.9; color: var(--accent); }
.nav-item.active .nav-icon { opacity: 1; color: var(--accent); }

.home-item {
  font-weight: 600;
  margin-bottom: 6px;
}

.page-nav-trigger-wrap {
  padding: 12px 14px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.page-nav-trigger {
  width: 100%;
  min-height: 38px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px 8px 12px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  background: var(--bg-surface);
  color: var(--text-bright);
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 600;
  text-align: left;
  transition: border-color var(--t) var(--ease), background var(--t) var(--ease), color var(--t) var(--ease);
}

.page-nav-trigger:hover:not(:disabled),
.page-nav-trigger[aria-expanded='true'] {
  border-color: var(--accent-border);
  background: var(--accent-glow);
  color: var(--accent);
}

.page-nav-trigger:disabled {
  cursor: not-allowed;
  color: var(--text-dim);
  opacity: 0.65;
}

.page-nav-chevron {
  color: var(--accent);
  font-family: 'JetBrains Mono', monospace;
  font-size: 19px;
  line-height: 1;
  transition: transform var(--t) var(--ease);
}

.page-nav-trigger[aria-expanded='true'] .page-nav-chevron { transform: rotate(90deg); }

#page-nav-flyout {
  position: fixed;
  top: 14px;
  bottom: 14px;
  left: calc(var(--sidebar-w) + 12px);
  width: min(320px, calc(100vw - var(--sidebar-w) - 28px));
  display: flex;
  flex-direction: column;
  background: rgba(13, 14, 17, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 16px 20px 50px rgba(0, 0, 0, 0.42);
  opacity: 0;
  pointer-events: none;
  transform: translateX(-12px);
  transition: opacity var(--t) var(--ease), transform var(--t) var(--ease);
  z-index: 95;
}

#page-nav-flyout.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(0);
}

#page-nav-flyout:hover { border-color: var(--accent-border); }

.page-nav-flyout-header {
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px 0 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-bright);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

#page-nav-close {
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 20px;
  line-height: 1;
  transition: color var(--t) var(--ease), background var(--t) var(--ease);
}

#page-nav-close:hover { background: var(--bg-hover); color: var(--accent); }

#page-nav-inner {
  display: grid;
  gap: 4px;
  overflow-y: auto;
  padding: 12px;
}

.page-nav-link {
  display: block;
  padding: 10px 12px;
  border-left: 2px solid transparent;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.35;
  transition: color var(--t) var(--ease), background var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-nav-link:hover {
  border-left-color: var(--accent);
  background: var(--accent-glow);
  color: var(--text-bright);
}

.page-nav-empty {
  padding: 10px 12px;
  color: var(--text-dim);
  font-size: 13px;
  line-height: 1.5;
}

/* Sidebar footer */
.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 16px;
  flex-shrink: 0;
}

.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  text-decoration: none;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 12px;
  font-weight: 500;
  transition: color var(--t);
}

.footer-link svg {
  width: 16px;
  height: 16px;
  display: block;
}

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

/* ---- Main ------------------------------------------------ */
#main {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
}

/* ---- Content area ---------------------------------------- */
#content-wrap {
  flex: 1;
  padding: 52px 48px 96px;
  max-width: 1180px;
  margin: 0 auto;
  width: 100%;
}

#content { max-width: 1100px; }

/* Loading */
.loading-state {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 64px 0;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.06em;
}

.loading-spinner {
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--border-light);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Content entry animation */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

#content.loaded { animation: fade-up 280ms var(--ease); }

/* ---- Markdown Typography --------------------------------- */

/* h1 */
#content h1 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 31px;
  font-weight: 700;
  color: var(--text-bright);
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin: 0 0 28px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border-light);
  scroll-margin-top: 28px;
}

/* h2 */
#content h2 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 21px;
  font-weight: 700;
  color: var(--text-bright);
  letter-spacing: -0.01em;
  margin: 52px 0 16px;
  scroll-margin-top: 28px;
  display: flex;
  align-items: center;
  gap: 10px;
  line-height: 1.3;
}

#content h2::before {
  content: '';
  display: inline-block;
  width: 3px;
  height: 17px;
  background: var(--accent);
  border-radius: 2px;
  flex-shrink: 0;
}

/* h3 */
#content h3 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--accent-muted);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin: 36px 0 12px;
  scroll-margin-top: 28px;
}

/* h4 */
#content h4 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-bright);
  margin: 28px 0 10px;
  scroll-margin-top: 28px;
}

/* h5, h6 */
#content h5, #content h6 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin: 20px 0 8px;
}

/* Paragraphs */
#content p {
  margin: 0 0 16px;
  font-size: 17px;
  line-height: 1.78;
  color: var(--text);
}

/* Lead paragraph (right after h1) */
#content h1 + p {
  font-size: 18.5px;
  color: #8fb8aa;
  line-height: 1.8;
}

/* Links */
#content a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--t);
}
#content a:hover { border-bottom-color: var(--accent); }

/* Strong */
#content strong {
  font-weight: 600;
  color: var(--text-bright);
}

/* Lists */
#content ul, #content ol {
  margin: 0 0 16px;
  padding-left: 22px;
}

#content li {
  font-size: 17px;
  line-height: 1.72;
  margin: 5px 0;
  color: var(--text);
}

#content li::marker { color: var(--accent-muted); }

#content ul ul, #content ol ol { margin: 4px 0; }

#content .table-of-contents-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 10px;
  margin: 20px 0 34px;
  padding: 0;
  list-style: none;
}

#content .table-of-contents-grid li {
  margin: 0;
  min-width: 0;
}

#content .table-of-contents-grid a {
  min-height: 54px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  background: var(--bg-surface);
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.35;
}

#content .table-of-contents-grid a::before {
  content: '→';
  color: var(--accent);
  font-family: 'JetBrains Mono', monospace;
  flex: 0 0 auto;
}

#content .table-of-contents-grid a:hover {
  border-color: var(--accent-border);
  background: var(--accent-glow);
  color: var(--text-bright);
}

/* Inline code */
#content code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  background: var(--bg-surface);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border-light);
}

/* Code blocks */
#content pre {
  position: relative;
  margin: 22px 0;
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
  overflow: hidden;
  background: var(--bg-code);
}

#content pre code {
  background: transparent;
  color: inherit;
  border: none;
  padding: 18px 20px;
  display: block;
  font-size: 14px;
  line-height: 1.65;
  overflow-x: auto;
}

/* Copy button */
.code-copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: 9.5px;
  padding: 3px 8px;
  border-radius: 4px;
  cursor: pointer;
  letter-spacing: 0.06em;
  transition: color var(--t) var(--ease),
              border-color var(--t) var(--ease),
              background var(--t) var(--ease);
}

.code-copy-btn:hover {
  color: var(--accent);
  border-color: var(--accent-border);
  background: var(--accent-glow);
}

.code-copy-btn.copied {
  color: var(--accent);
  border-color: var(--accent-border);
}

/* Tables */
#content table {
  width: 100%;
  border-collapse: collapse;
  margin: 22px 0;
  font-size: 15.5px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
}

#content thead { background: var(--bg-surface); }

#content th {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

#content td {
  padding: 9px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: top;
  line-height: 1.6;
}

#content tr:last-child td { border-bottom: none; }
#content tbody tr:nth-child(even) td { background: rgba(255, 255, 255, 0.02); }
#content tbody tr:hover td { background: var(--bg-hover); transition: background var(--t); }

/* Blockquote (plain, not alert) */
#content blockquote {
  border-left: 2px solid var(--accent-border);
  margin: 22px 0;
  padding: 12px 20px;
  background: var(--bg-surface);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-muted);
}

#content blockquote p { margin: 0; font-size: 16px; }

/* GitHub Alerts */
.gh-alert {
  margin: 22px 0;
  padding: 14px 18px;
  border-radius: var(--radius);
  border: 1px solid;
  background: var(--bg-surface);
}

.gh-alert-header {
  display: flex;
  align-items: center;
  gap: 7px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 9px;
}

.gh-alert-body { font-size: 16px; line-height: 1.68; }
.gh-alert-body p:last-child { margin-bottom: 0; }
.gh-alert-body code { font-size: 14px; }

.gh-alert-note      { border-color: rgba(88, 166, 255, 0.25); }
.gh-alert-note      .gh-alert-header { color: #58a6ff; }
.gh-alert-tip       { border-color: rgba(0, 229, 180, 0.28); }
.gh-alert-tip       .gh-alert-header { color: var(--accent); }
.gh-alert-important { border-color: rgba(210, 153, 34, 0.28); }
.gh-alert-important .gh-alert-header { color: #d29922; }
.gh-alert-warning   { border-color: rgba(240, 160, 0, 0.32); }
.gh-alert-warning   .gh-alert-header { color: #f0a000; }
.gh-alert-caution   { border-color: rgba(248, 81, 73, 0.28); }
.gh-alert-caution   .gh-alert-header { color: #f85149; }

/* Details / Summary (README uses these extensively) */
#content details {
  margin: 16px 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

#content summary {
  padding: 11px 16px;
  background: var(--bg-surface);
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-bright);
  transition: background var(--t) var(--ease);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  user-select: none;
}

#content summary::-webkit-details-marker { display: none; }

#content summary::before {
  content: '▶';
  font-size: 9px;
  color: var(--accent);
  transition: transform var(--t) var(--ease);
  flex-shrink: 0;
  width: 12px;
}

#content details[open] summary::before { transform: rotate(90deg); }

#content summary:hover { background: var(--bg-hover); }

#content details > *:not(summary) {
  padding: 20px 20px 16px;
}

#content details > pre { margin: 0; border-radius: 0; border: none; border-top: 1px solid var(--border); }

/* HR */
#content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 44px 0;
}

/* Images */
#content img {
  max-width: 100%;
  border-radius: var(--radius);
}

/* Badge images (inline in paragraphs) */
#content p img {
  border: none;
  border-radius: 3px;
  vertical-align: middle;
  margin: 1px 2px;
}

/* hljs override */
.hljs { background: var(--bg-code) !important; }

/* Error state */
.error-state {
  padding: 48px 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
}

.error-state .error-title {
  color: var(--accent);
  margin-bottom: 10px;
  font-size: 13px;
}

.error-state p { color: var(--text-muted); }

/* ---- Mobile hamburger ------------------------------------ */
#menu-toggle {
  display: none;
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  width: 38px;
  height: 38px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  transition: border-color var(--t);
}

#menu-toggle:hover { border-color: var(--accent-border); }

#menu-toggle span {
  display: block;
  width: 17px;
  height: 1.5px;
  background: var(--text-muted);
  border-radius: 1px;
  transition: transform var(--t) var(--ease), opacity var(--t);
}

#menu-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(4.5px, 4.5px); }
#menu-toggle.open span:nth-child(2) { opacity: 0; width: 0; }
#menu-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(4.5px, -4.5px); }

/* Mobile overlay */
#mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  z-index: 90;
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
}

/* ---- Responsive ------------------------------------------ */
@media (max-width: 800px) {
  #sidebar { transform: translateX(-100%); }
  #sidebar.open {
    transform: translateX(0);
    box-shadow: 8px 0 60px rgba(0, 0, 0, 0.6), 0 0 40px rgba(0, 229, 180, 0.06);
  }

  #main { margin-left: 0; }
  #menu-toggle { display: flex; }
  #mobile-overlay.open { display: block; }

  #content-wrap { padding: 28px 22px 72px; }
  #page-nav-flyout {
    top: 70px;
    bottom: 14px;
    left: 14px;
    width: calc(100vw - 28px);
    z-index: 150;
  }

  #content h1 { font-size: 22px; }
  #content h2 { font-size: 16px; margin-top: 40px; }
}

@media (max-width: 480px) {
  #content-wrap { padding: 20px 16px 64px; }
  #content h1 { font-size: 20px; }
  #content table { font-size: 12.5px; }
  #content th, #content td { padding: 7px 10px; }
  #content .table-of-contents-grid { grid-template-columns: 1fr; }
}