/* Mantoo Nav 1.1 — polished dark/light personal navigation */

:root,
[data-theme="dark"] {
  --bg: #09090b;
  --bg-elev: #0c0c0e;
  --surface: #18181b;
  --surface-2: #1c1c1f;
  --surface-hover: #1f1f23;
  --text: #fafafa;
  --muted: #9f9fa9;
  --muted-2: #71717a;
  --border: #27272a;
  --border-strong: #3f3f46;
  --primary: #2a61f6;
  --primary-2: #2aa9fe;
  --grad: linear-gradient(135deg, #2a61f6 0%, #2aa9fe 100%);
  --glow: rgba(42, 97, 246, 0.28);
  --chip-active-bg: #ffffff;
  --chip-active-fg: #09090b;
  --header-bg: rgba(9, 9, 11, 0.78);
  --search-bg: #18181b;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --rail-active-bg: #1c1c1f;
  --card-arrow-bg: transparent;
  --scrollbar: #27272a;
}

[data-theme="light"] {
  --bg: #f4f5f8;
  --bg-elev: #eef0f5;
  --surface: #ffffff;
  --surface-2: #f8f9fc;
  --surface-hover: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --muted-2: #9ca3af;
  --border: #e5e7eb;
  --border-strong: #d1d5db;
  --primary: #2563eb;
  --primary-2: #38bdf8;
  --grad: linear-gradient(135deg, #2563eb 0%, #38bdf8 100%);
  --glow: rgba(37, 99, 235, 0.18);
  --chip-active-bg: #111827;
  --chip-active-fg: #ffffff;
  --header-bg: rgba(255, 255, 255, 0.82);
  --search-bg: #ffffff;
  --shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
  --rail-active-bg: #eef2ff;
  --card-arrow-bg: #f3f4f6;
  --scrollbar: #d1d5db;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 76px;
}

body.mantoo-body {
  margin: 0;
  font-family: "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    system-ui, -apple-system, sans-serif;
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; }

.mn-container {
  width: min(100% - 48px, 1440px);
  margin-inline: auto;
}

/* ========== Header ========== */
.mn-header {
  position: sticky;
  top: 0;
  z-index: 300;
  height: 60px;
  background: var(--header-bg);
  backdrop-filter: saturate(1.4) blur(16px);
  -webkit-backdrop-filter: saturate(1.4) blur(16px);
  border-bottom: 1px solid var(--border);
}

.mn-header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 24px;
}

.mn-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  font-weight: 780;
  letter-spacing: 0.06em;
  font-size: 15px;
}

.mn-logo-mark {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--grad);
  font-size: 13px;
  font-weight: 800;
  box-shadow: 0 6px 16px var(--glow);
}

.mn-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: 8px;
}

.mn-nav a {
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 13.5px;
  color: var(--muted);
  transition: color .15s, background .15s;
}
.mn-nav a:hover { color: var(--text); background: var(--surface); }
.mn-nav a.is-active {
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
}

.mn-header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.mn-icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: color .15s, border-color .15s, background .15s, transform .15s;
}
.mn-icon-btn:hover {
  color: var(--text);
  border-color: var(--border-strong);
  transform: translateY(-1px);
}
.mn-icon-btn svg { width: 16px; height: 16px; }

.mn-menu-toggle {
  display: none;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 10px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  padding: 0;
}
.mn-menu-toggle span {
  display: block;
  width: 14px;
  height: 1.5px;
  background: var(--text);
  border-radius: 2px;
}

/* ========== Hero ========== */
.mn-hero {
  position: relative;
  padding: 64px 0 40px;
  text-align: center;
  overflow: hidden;
  background: var(--bg);
}

.mn-hero::before {
  content: "";
  position: absolute;
  inset: -20% 10% auto;
  height: 280px;
  background:
    radial-gradient(closest-side, rgba(42, 97, 246, 0.28), transparent 70%),
    radial-gradient(closest-side, rgba(42, 169, 254, 0.18), transparent 72%);
  filter: blur(8px);
  pointer-events: none;
}

.mn-hero > .mn-container { position: relative; z-index: 1; }

.mn-hero-title {
  margin: 0 0 12px;
  font-size: clamp(2rem, 4.2vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.15;
  color: var(--text);
}

.mn-hero-sub {
  margin: 0 auto 30px;
  max-width: 520px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.6;
}

.mn-search-wrap {
  max-width: 680px;
  margin: 0 auto;
}

.mn-search {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 52px;
  padding: 8px 8px 8px 18px;
  background: var(--search-bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  box-shadow: var(--shadow);
  transition: border-color .2s, box-shadow .2s;
}
.mn-search:focus-within {
  border-color: color-mix(in srgb, var(--primary) 55%, var(--border));
  box-shadow: 0 0 0 4px var(--glow), var(--shadow);
}

.mn-search-icon { color: var(--muted-2); flex-shrink: 0; }

.mn-search-input {
  flex: 1;
  border: 0;
  outline: 0;
  background: transparent;
  font: inherit;
  font-size: 14px;
  color: var(--text);
  min-width: 0;
}
.mn-search-input::placeholder { color: var(--muted-2); }

.mn-search-submit {
  width: 38px;
  height: 38px;
  border: 0;
  border-radius: 999px;
  background: var(--grad);
  color: #fff;
  display: grid;
  place-items: center;
  cursor: pointer;
  flex-shrink: 0;
  box-shadow: 0 6px 16px var(--glow);
  transition: transform .15s, filter .15s;
}
.mn-search-submit:hover { transform: scale(1.04); filter: brightness(1.05); }

.mn-search-kbd {
  display: none;
}

/* ========== Body: rail + content ========== */
.mn-body-layout {
  display: grid;
  grid-template-columns: 148px minmax(0, 1fr);
  gap: 24px;
  padding: 8px 0 80px;
  align-items: start;
}

.mn-rail {
  position: sticky;
  top: 76px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: color-mix(in srgb, var(--surface) 72%, transparent);
  backdrop-filter: blur(8px);
}

.mn-rail-label {
  padding: 8px 10px 10px;
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted-2);
}

.mn-rail a {
  position: relative;
  display: block;
  padding: 9px 12px;
  border-radius: 8px;
  font-size: 13px;
  color: var(--muted);
  transition: color .15s, background .15s;
}
.mn-rail a:hover { color: var(--text); background: var(--surface-2); }
.mn-rail a.is-active {
  color: var(--text);
  background: var(--rail-active-bg);
  font-weight: 600;
}
.mn-rail a.is-active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  border-radius: 2px;
  background: var(--grad);
}

.mn-sections {
  display: flex;
  flex-direction: column;
  gap: 36px;
  min-width: 0;
}

/* Hot chips bar above first section content */
.mn-hotbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 4px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
}

.mn-hotbar-title {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}
.mn-hotbar-title i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--grad);
  box-shadow: 0 0 12px var(--glow);
}

.mn-hotbar-sub {
  margin: 2px 0 0 18px;
  font-size: 12px;
  color: var(--muted);
  font-weight: 400;
}

.mn-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.mn-chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 13px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 550;
  color: var(--muted);
  background: var(--bg);
  border: 1px solid var(--border);
  transition: all .15s;
}
.mn-chip:hover {
  color: var(--text);
  border-color: var(--border-strong);
}
.mn-chip.is-active {
  color: var(--chip-active-fg);
  background: var(--chip-active-bg);
  border-color: transparent;
  box-shadow: 0 6px 16px rgba(0,0,0,.18);
}

.mn-section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.mn-section-title {
  margin: 0 0 4px;
  font-size: 18px;
  font-weight: 750;
  letter-spacing: -0.02em;
}

.mn-section-sub {
  margin: 0;
  color: var(--muted);
  font-size: 12.5px;
}

.mn-section-more {
  font-size: 12.5px;
  color: var(--muted);
  white-space: nowrap;
  transition: color .15s;
}
.mn-section-more:hover { color: var(--primary-2); }

.mn-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}
.mn-grid-5 {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

/* ========== Cards ========== */
.mn-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  min-height: 66px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  position: relative;
  transition: transform .16s ease, border-color .16s, background .16s, box-shadow .16s;
}
.mn-card:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--primary) 45%, var(--border));
  background: var(--surface-hover);
  box-shadow: 0 12px 28px rgba(0,0,0,.28), 0 0 0 1px color-mix(in srgb, var(--primary) 20%, transparent);
}
.mn-card.is-hidden { display: none; }

.mn-card-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  overflow: hidden;
  background: var(--bg);
  border: 1px solid var(--border);
  flex-shrink: 0;
  display: grid;
  place-items: center;
}
.mn-card-icon img {
  width: 26px;
  height: 26px;
  object-fit: contain;
}

.mn-card-letter {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 750;
  font-size: 14px;
  color: #fff;
  background: var(--grad);
}

.mn-card-body { flex: 1; min-width: 0; padding-right: 4px; }

.mn-card-title {
  margin: 0;
  font-size: 14px;
  font-weight: 650;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: -0.01em;
}

.mn-card-desc {
  margin: 3px 0 0;
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.35;
}

.mn-card-arrow {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--card-arrow-bg);
  display: grid;
  place-items: center;
  color: var(--muted-2);
  font-size: 11px;
  flex-shrink: 0;
  transition: all .15s;
}
.mn-card:hover .mn-card-arrow {
  color: #fff;
  border-color: transparent;
  background: var(--grad);
}

.mn-empty,
.mn-empty-section,
.mn-filter-empty {
  color: var(--muted);
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 22px;
  text-align: center;
  font-size: 13px;
}

/* ========== Notes / content ========== */
.mn-content-page { padding: 40px 0 80px; }

.mn-page-hero {
  margin-bottom: 24px;
}
.mn-page-title {
  margin: 0 0 8px;
  font-size: 1.75rem;
  font-weight: 780;
  letter-spacing: -0.03em;
}
.mn-page-lead {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  max-width: 560px;
}

.mn-prose { color: var(--muted); font-size: 14px; }
.mn-prose p { margin: 0 0 1em; }

.mn-article {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
}

.mn-notes-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.mn-note-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 18px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  min-height: 140px;
  transition: transform .15s, border-color .15s, box-shadow .15s;
}
.mn-note-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
}
.mn-note-card h2 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.mn-note-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.mn-note-card time {
  font-size: 12px;
  color: var(--muted-2);
}

.mn-footer {
  padding: 22px 0 36px;
  color: var(--muted-2);
  font-size: 12px;
  text-align: center;
  border-top: 1px solid var(--border);
}

/* Back to top */
.mn-totop {
  position: fixed;
  right: 20px;
  bottom: 24px;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  display: grid;
  place-items: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity .2s, transform .2s, color .15s, border-color .15s;
  z-index: 250;
  box-shadow: var(--shadow);
}
.mn-totop.is-show {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}
.mn-totop:hover { color: var(--text); border-color: var(--border-strong); }



/* ========== Hot / 我的项目 block ========== */
.mn-hot {
  padding: 8px 0 28px;
}

.mn-hot-head {
  display: grid;
  grid-template-columns: minmax(160px, 220px) 1fr auto;
  align-items: center;
  gap: 16px 20px;
  margin-bottom: 16px;
}

.mn-hot-title {
  margin: 0 0 4px;
  font-size: 20px;
  font-weight: 780;
  letter-spacing: -0.02em;
  color: var(--text);
}

.mn-hot-sub {
  margin: 0;
  font-size: 12.5px;
  color: var(--muted);
}

.mn-hot-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-start;
  min-width: 0;
}

.mn-pill {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  border-radius: 8px;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 550;
  cursor: pointer;
  transition: color .15s, background .15s, border-color .15s;
}
.mn-pill:hover {
  color: var(--text);
  border-color: var(--border-strong);
}
.mn-pill.is-active {
  color: var(--text);
  background: var(--surface-2);
  border-color: var(--border-strong);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--text) 8%, transparent);
}

.mn-hot-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.mn-sort {
  position: relative;
}

.mn-sort-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  font-size: 12.5px;
  white-space: nowrap;
}
.mn-sort-btn:hover { color: var(--text); border-color: var(--border-strong); }
.mn-sort-ico { font-size: 12px; line-height: 1; }
.mn-sort-caret { font-size: 10px; opacity: .7; }

.mn-sort-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  margin: 0;
  padding: 6px;
  list-style: none;
  min-width: 140px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow);
  z-index: 40;
}
.mn-sort-menu li {
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 12.5px;
  color: var(--muted);
  cursor: pointer;
}
.mn-sort-menu li:hover,
.mn-sort-menu li.is-active {
  color: var(--text);
  background: var(--surface-2);
}

.mn-view-all {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12.5px;
  color: var(--muted);
  white-space: nowrap;
  padding: 7px 4px;
  transition: color .15s;
}
.mn-view-all:hover { color: var(--primary-2); }

@media (max-width: 1000px) {
  .mn-hot-head {
    grid-template-columns: 1fr auto;
  }
  .mn-hot-pills {
    grid-column: 1 / -1;
    order: 3;
  }
  .mn-hot-actions { order: 2; }
}

@media (max-width: 720px) {
  .mn-hot-head {
    grid-template-columns: 1fr;
  }
  .mn-hot-actions {
    width: 100%;
    justify-content: space-between;
  }
  .mn-rail {
    display: none;
  }
  .mn-rail.is-open-mobile {
    display: flex;
  }
  .mn-body-layout {
    grid-template-columns: 1fr;
  }
}

/* ========== Responsive ========== */
@media (max-width: 1280px) {
  .mn-grid, .mn-grid-5 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (max-width: 1100px) {
  .mn-grid, .mn-grid-5 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  .mn-body-layout { grid-template-columns: 1fr; }
  .mn-rail {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 6px;
    padding: 8px;
  }
  .mn-rail-label { width: 100%; padding-bottom: 2px; }
  .mn-rail a {
    padding: 7px 12px;
    background: var(--bg);
    border: 1px solid var(--border);
  }
  .mn-rail a.is-active::before { display: none; }
  .mn-notes-list { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .mn-grid, .mn-grid-5 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mn-container { width: min(100% - 24px, 1440px); }
  .mn-hero { padding: 40px 0 28px; }
  .mn-nav { display: none; }
  .mn-nav.is-open {
    display: flex;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 12px 16px 16px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
  }
  .mn-menu-toggle { display: flex; }
  .mn-header-inner { position: relative; }
  .mn-hotbar { align-items: flex-start; flex-direction: column; }
  .mn-chips { justify-content: flex-start; }
}
@media (max-width: 480px) {
  .mn-grid, .mn-grid-5 { grid-template-columns: 1fr; }
  .mn-search { padding-left: 14px; }
  .mn-hot-head { gap: 12px; }
  .mn-hot-actions { width: 100%; justify-content: space-between; }
}