/* ============================================================================
   AQUA HOMESPACE - INTERNAL NAVIGATION
   ============================================================================ */

body.internal-page {
  --internal-nav-rail-width: 92px;
  --internal-nav-panel-width: 292px;
  --internal-topbar-height: 76px;
  --internal-topbar-gap: 0px;
  --internal-nav-speed-fast: 110ms ease-out;
  --internal-nav-speed-base: 180ms ease-out;
  padding-left: var(--internal-nav-rail-width);
  padding-top: calc(var(--internal-topbar-height) + var(--internal-topbar-gap));
  transition: padding-left var(--internal-nav-speed-base);
}

body.internal-page.internal-nav-open {
  padding-left: calc(var(--internal-nav-rail-width) + var(--internal-nav-panel-width));
}

.internal-nav-shell {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--internal-nav-rail-width);
  overflow: hidden;
  transition: width var(--internal-nav-speed-base);
  z-index: 1300;
}

body.internal-nav-open .internal-nav-shell {
  width: calc(var(--internal-nav-rail-width) + var(--internal-nav-panel-width));
}

.internal-topbar {
  position: fixed;
  top: 0;
  left: var(--internal-nav-rail-width);
  right: 0;
  height: var(--internal-topbar-height);
  background: var(--main, #00b5ef);
  box-shadow: 0 10px 22px rgba(33, 37, 46, 0.18);
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  overflow: hidden;
  z-index: 1200;
  transition: left var(--internal-nav-speed-base);
}

.internal-topbar::after {
  content: '';
  position: absolute;
  left: 20px;
  bottom: 0;
  width: 75px;
  height: 5px;
  background: var(--accent);
}

body.internal-nav-open .internal-topbar {
  left: calc(var(--internal-nav-rail-width) + var(--internal-nav-panel-width));
}

.internal-topbar-left {
  display: grid;
  align-items: center;
  min-width: 0;
  position: relative;
  z-index: 1;
}

.topbar-rotator-item {
  grid-area: 1 / 1;
  margin: 0;
  opacity: 0;
  transition: opacity 900ms ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar-rotator-item.is-visible {
  opacity: 1;
}

.internal-topbar-greeting {
  font-family: var(--font-family-headlines);
  font-size: clamp(0.88rem, 1.6vw, 1.08rem);
  letter-spacing: 0.01em;
  color: #ffffff;
}

.internal-topbar-quote {
  font-family: var(--font-family-headlines);
  font-size: clamp(0.76rem, 1.2vw, 0.9rem);
  font-style: italic;
  color: rgba(255, 255, 255, 0.9);
  letter-spacing: 0.01em;
}

.internal-topbar-quote-author {
  opacity: 0.75;
  font-style: normal;
}

.internal-topbar-actions {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}

.internal-topbar-icon-btn,
.internal-topbar-avatar {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  background: #ffffff;
  color: #6b7280;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color var(--internal-nav-speed-fast), box-shadow var(--internal-nav-speed-fast), transform var(--internal-nav-speed-fast);
}

.internal-topbar-icon-btn:hover {
  border-color: rgba(255, 255, 255, 0.9);
  box-shadow: 0 7px 16px rgba(0, 0, 0, 0.14);
  transform: translateY(-1px);
}

.internal-topbar-avatar:hover {
  border-color: rgba(255, 255, 255, 0.9);
  box-shadow: 0 7px 16px rgba(7, 181, 124, 0.35);
  transform: translateY(-1px);
}

.internal-topbar-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  font-family: var(--font-family-headlines);
  font-size: 1rem;
  font-weight: var(--font-weight-bold);
  color: #ffffff;
  background: linear-gradient(155deg, #00b5ef 0%, #07b57c 100%);
  border-color: rgba(255, 255, 255, 0.6);
}

.internal-topbar-palm-bg {
  position: absolute;
  right: 0;
  top: 0;
  height: 100%;
  width: auto;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.internal-nav-rail {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  width: var(--internal-nav-rail-width);
  height: 100vh;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.9) 0%, rgba(248, 248, 249, 0.84) 100%);
  border-right: 1px solid #dddfe3;
  box-shadow: 8px 0 18px rgba(51, 56, 66, 0.06);
  padding: 0 10px 14px;
}

.internal-nav-rail-footer {
  margin-top: auto;
  width: 100%;
  display: flex;
  justify-content: center;
  padding-top: 10px;
}

.internal-nav-badge-btn {
  width: 72px;
  height: 90px;
  border: 0;
  border-radius: 0 0 12px 12px;
  background: var(--main);
  box-shadow: var(--drop-shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.internal-nav-badge-logo {
  width: 60px;
  height: 60px;
  object-fit: contain;
}

.internal-nav-hamburger {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  border: 1px solid #d8dbe0;
  background: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 6px 14px rgba(46, 53, 64, 0.09);
  transition: border-color var(--internal-nav-speed-fast), box-shadow var(--internal-nav-speed-fast), background var(--internal-nav-speed-fast);
}

.internal-nav-hamburger:hover {
  border-color: #cbd1d8;
}

.internal-nav-hamburger-lines {
  position: relative;
  width: 20px;
  height: 14px;
}

.internal-nav-hamburger-lines span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 4px;
  background: #2e333d;
  transform-origin: center;
  transition: transform var(--internal-nav-speed-fast), opacity var(--internal-nav-speed-fast), top var(--internal-nav-speed-fast);
}

.internal-nav-hamburger-lines span:nth-child(1) {
  top: 0;
}

.internal-nav-hamburger-lines span:nth-child(2) {
  top: 6px;
}

.internal-nav-hamburger-lines span:nth-child(3) {
  top: 12px;
}

body.internal-nav-open .internal-nav-hamburger-lines span:nth-child(1) {
  top: 6px;
  transform: rotate(45deg);
}

body.internal-nav-open .internal-nav-hamburger-lines span:nth-child(2) {
  opacity: 0;
}

body.internal-nav-open .internal-nav-hamburger-lines span:nth-child(3) {
  top: 6px;
  transform: rotate(-45deg);
}

.internal-nav-panel {
  position: absolute;
  top: 0;
  left: var(--internal-nav-rail-width);
  width: var(--internal-nav-panel-width);
  height: 100vh;
  background: linear-gradient(180deg, #fbfbfc 0%, #f1f2f4 100%);
  border-right: 1px solid #d8dbe0;
  box-shadow: 10px 0 22px rgba(29, 33, 40, 0.12);
  transform: translateX(-16px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: transform var(--internal-nav-speed-base), opacity var(--internal-nav-speed-fast), visibility var(--internal-nav-speed-fast);
  padding: 124px 20px 24px;
  display: flex;
  flex-direction: column;
}

body.internal-nav-open .internal-nav-panel {
  transform: translateX(0);
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.internal-nav-panel-header {
  margin-bottom: 16px;
}

.internal-nav-subtitle {
  margin: 0;
  font-size: var(--font-size-sm);
  font-family: var(--font-family-headlines);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #6d7380;
}

.internal-nav-divider {
  margin: 10px 0 0;
  border: 0;
  border-top: 1px solid #dfe2e7;
}

.internal-nav-list {
  list-style: none;
  margin: 0;
  padding: 0 0 25px;
  display: grid;
  gap: 10px;
}

.internal-nav-logout-btn {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  border: 1px solid #d5d9df;
  background: #ffffff;
  color: #2e333d;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color var(--internal-nav-speed-fast), box-shadow var(--internal-nav-speed-fast), color var(--internal-nav-speed-fast);
}

.internal-nav-logout-btn:hover {
  border-color: #b7bec8;
  box-shadow: 0 3px 10px rgba(46, 53, 64, 0.12);
}

.internal-nav-link {
  display: block;
  padding: 13px 14px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: var(--line-faint);
  color: var(--text-main);
  font-family: var(--font-family-headlines);
  font-size: 1.08rem;
  letter-spacing: 0.001em;
  transition: border-color var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.internal-nav-link:hover {
  border-color: var(--line-strong);
  background: var(--surface);
  box-shadow: 0 8px 18px rgba(29, 33, 40, 0.1);
  transform: translateX(2px);
}

.internal-nav-link.is-active {
  border-color: var(--main);
  background: var(--main);
  color: var(--text-on-main);
}

/* ── Mobile-only action bar (hidden on desktop) ──────────────────────── */

.mobile-bar-actions {
  display: none;
}

/* ── Hotbar rail slots ────────────────────────────────────────────────── */

.nav-hotbar-slots {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.nav-hotbar-slot {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid #d8dbe0;
  background: #ffffff;
  color: #2e333d;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  box-shadow: 0 3px 8px rgba(46, 53, 64, 0.07);
  transition: border-color var(--internal-nav-speed-fast), box-shadow var(--internal-nav-speed-fast), color var(--internal-nav-speed-fast), transform var(--internal-nav-speed-fast);
}

.nav-hotbar-slot:hover {
  border-color: var(--main, #00b5ef);
  box-shadow: 0 4px 14px rgba(0, 181, 239, 0.18);
  transform: scale(1.06);
  color: var(--main, #00b5ef);
}

.nav-hotbar-slot.is-active {
  border-color: var(--main, #00b5ef);
  background: var(--main, #00b5ef);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(0, 181, 239, 0.25);
}

/* ── Hotbar add button ────────────────────────────────────────────────── */

#navHotbarAddBtn {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: 1.5px dashed #c4c8cf;
  background: transparent;
  color: #9ba2ad;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color var(--internal-nav-speed-fast), color var(--internal-nav-speed-fast), background var(--internal-nav-speed-fast);
}

#navHotbarAddBtn:hover {
  border-color: var(--main, #00b5ef);
  color: var(--main, #00b5ef);
  background: rgba(0, 181, 239, 0.06);
}

/* ── Hotbar picker panel ─────────────────────────────────────────────── */

.nav-hotbar-picker {
  position: fixed;
  left: calc(var(--internal-nav-rail-width) + 10px);
  top: 50%;
  transform: translateY(-50%) translateX(-10px);
  width: 260px;
  background: var(--surface, #ffffff);
  border: 1px solid var(--line-soft, #dfe2e7);
  border-radius: 14px;
  box-shadow: 0 16px 40px rgba(29, 33, 40, 0.16), 0 2px 8px rgba(29, 33, 40, 0.08);
  z-index: 1400;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease, visibility 0s 160ms;
  padding: 16px;
  max-height: calc(100vh - 40px);
  overflow-y: auto;
}

.nav-hotbar-picker.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(-50%) translateX(0);
  transition: opacity 160ms ease, transform 160ms ease, visibility 0s 0s;
}

.nav-hotbar-picker-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.nav-hotbar-picker-title {
  margin: 0;
  font-family: var(--font-family-headlines);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-main);
}

.nav-hotbar-picker-count {
  font-size: 0.74rem;
  color: var(--text-muted);
  font-family: var(--font-family-headlines);
  white-space: nowrap;
}

.nav-hotbar-picker-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 7px;
  margin-bottom: 12px;
}

.nav-hotbar-picker-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 10px 6px;
  border: 1px solid var(--line-soft, #dfe2e7);
  border-radius: 10px;
  background: var(--light-mode-bg, #f9fafb);
  cursor: pointer;
  transition: border-color var(--internal-nav-speed-fast), background var(--internal-nav-speed-fast), color var(--internal-nav-speed-fast);
  font-family: var(--font-family-headlines);
  font-size: 0.72rem;
  line-height: 1.2;
  color: var(--text-main);
  text-align: center;
}

.nav-hotbar-picker-item:hover:not(:disabled) {
  border-color: var(--line-strong, #c8cdd5);
  background: var(--surface, #ffffff);
}

.nav-hotbar-picker-item.is-selected {
  border-color: var(--main, #00b5ef);
  background: rgba(0, 181, 239, 0.07);
  color: var(--main, #00b5ef);
}

.nav-hotbar-picker-item:disabled {
  opacity: 0.38;
  cursor: not-allowed;
}

.nav-hotbar-picker-icon {
  color: inherit;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-hotbar-picker-footer {
  display: flex;
  gap: 8px;
}

.nav-hotbar-picker-save {
  flex: 1;
  padding: 8px 12px;
  border: 0;
  border-radius: 8px;
  background: var(--main, #00b5ef);
  color: #ffffff;
  font-family: var(--font-family-headlines);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--internal-nav-speed-fast), box-shadow var(--internal-nav-speed-fast);
}

.nav-hotbar-picker-save:hover {
  background: #009fd4;
  box-shadow: 0 4px 10px rgba(0, 181, 239, 0.28);
}

.nav-hotbar-picker-cancel {
  padding: 8px 10px;
  border: 1px solid var(--line-soft, #dfe2e7);
  border-radius: 8px;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-family-headlines);
  font-size: 0.82rem;
  cursor: pointer;
  transition: border-color var(--internal-nav-speed-fast), background var(--internal-nav-speed-fast);
}

.nav-hotbar-picker-cancel:hover {
  border-color: var(--line-strong, #c8cdd5);
  background: var(--light-mode-bg, #f4f4f4);
}

@media (max-width: 900px) {
  body.internal-page {
    --internal-nav-rail-width: 72px;
    --internal-nav-panel-width: min(84vw, 290px);
    --internal-topbar-height: 68px;
    --internal-topbar-gap: 0px;
  }

  .internal-topbar {
    top: 0;
    left: var(--internal-nav-rail-width);
    right: 0;
    padding: 0 14px;
  }

  .internal-topbar::after {
    left: 14px;
  }

  body.internal-nav-open .internal-topbar {
    left: calc(var(--internal-nav-rail-width) + var(--internal-nav-panel-width));
  }

  .internal-topbar-left {
    max-width: 60%;
  }

  .internal-topbar-actions {
    gap: 8px;
  }

  .internal-topbar-icon-btn {
    width: 36px;
    height: 36px;
    border-radius: 10px;
  }

  .internal-topbar-avatar {
    width: 40px;
    height: 40px;
  }

  .internal-nav-rail {
    padding-top: 12px;
  }

  .internal-nav-badge-btn {
    width: 56px;
    height: 70px;
  }

  .internal-nav-badge-logo {
    width: 44px;
    height: 44px;
  }

  .nav-hotbar-picker {
    left: calc(var(--internal-nav-rail-width) + 8px);
    width: min(240px, calc(100vw - var(--internal-nav-rail-width) - 20px));
  }
}

/* ============================================================================
   MOBILE BOTTOM BAR (≤ 799px)
   Sidebar + topbar collapse into a single fixed bar at the bottom.
   The nav panel becomes a full-screen overlay sliding from the left.
   ============================================================================ */

@media (max-width: 799px) {

  /* ── Body padding reset ──────────────────────────────────────────────── */

  body.internal-page {
    --mobile-bar-height: 58px;
    --internal-nav-rail-width: 0px;
    --internal-topbar-height: 0px;
    --internal-topbar-gap: 0px;
    padding-bottom: var(--mobile-bar-height);
  }

  /* Prevent the nav-open padding-left from applying on mobile */
  body.internal-page.internal-nav-open {
    padding-left: 0;
  }

  /* Dim the page content behind the open nav panel */
  body.internal-nav-open::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: var(--mobile-bar-height);
    background: rgba(16, 20, 28, 0.42);
    z-index: 1299;
  }

  /* ── Hide topbar (replaced by bottom bar) ────────────────────────────── */

  .internal-topbar {
    display: none;
  }

  /* ── Nav shell → bottom bar container ───────────────────────────────── */

  .internal-nav-shell {
    inset: auto 0 0 0;
    width: 100%;
    height: var(--mobile-bar-height);
    overflow: visible;
  }

  body.internal-nav-open .internal-nav-shell {
    width: 100%;
  }

  /* ── Rail → horizontal bottom bar ───────────────────────────────────── */

  .internal-nav-rail {
    flex-direction: row;
    width: 100%;
    height: var(--mobile-bar-height);
    padding: 0 12px;
    border-right: none;
    border-top: 1px solid #dddfe3;
    background: rgba(255, 255, 255, 0.97);
    box-shadow: 0 -4px 18px rgba(33, 37, 46, 0.1);
    align-items: center;
    gap: 8px;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
  }

  .internal-nav-badge-btn,
  .internal-nav-rail-footer {
    display: none;
  }

  .internal-nav-hamburger {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    flex-shrink: 0;
  }

  /* ── Hotbar slots → horizontal row, centered ─────────────────────────── */

  .nav-hotbar-slots {
    flex-direction: row;
    gap: 6px;
    flex: 1;
    min-width: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    justify-content: flex-start;
    align-items: center;
  }

  .nav-hotbar-slots::-webkit-scrollbar {
    display: none;
  }

  .nav-hotbar-slot {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    flex-shrink: 0;
  }

  #navHotbarAddBtn {
    display: inline-flex;
    flex-shrink: 0;
  }

  /* ── Mobile right-side actions ───────────────────────────────────────── */

  .mobile-bar-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
  }

  .mobile-bar-icon-btn {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    border: 1px solid #d8dde4;
    background: #ffffff;
    color: #2d3542;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: border-color 110ms ease-out, box-shadow 110ms ease-out;
  }

  .mobile-bar-icon-btn:hover {
    border-color: #bcc4cf;
    box-shadow: 0 4px 10px rgba(40, 45, 55, 0.12);
  }

  .mobile-bar-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.5);
    background: linear-gradient(155deg, #00b5ef 0%, #07b57c 100%);
    color: #ffffff;
    font-family: var(--font-family-headlines);
    font-size: 0.85rem;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: box-shadow 110ms ease-out, transform 110ms ease-out;
  }

  .mobile-bar-avatar:hover {
    box-shadow: 0 4px 12px rgba(0, 181, 239, 0.3);
    transform: scale(1.04);
  }

  /* ── Nav panel → full-screen overlay from left ───────────────────────── */

  .internal-nav-panel {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: var(--mobile-bar-height);
    width: 100vw;
    height: auto;
    z-index: 1302;
    transform: translateX(-100%);
    opacity: 1;
    visibility: visible;
    pointer-events: none;
    padding: 36px 20px 20px;
    border-right: none;
    border-bottom: 1px solid #d8dbe0;
    box-shadow: none;
  }

  body.internal-nav-open .internal-nav-panel {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    box-shadow: 0 4px 32px rgba(16, 20, 28, 0.18);
  }

  /* ── Hotbar picker panel → above bottom bar, centered ───────────────── */

  .nav-hotbar-picker {
    top: auto;
    bottom: calc(var(--mobile-bar-height) + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    width: min(280px, calc(100vw - 32px));
  }

  .nav-hotbar-picker.is-open {
    transform: translateX(-50%) translateY(0);
  }
}