.app-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app-main {
  flex: 1;
  padding-block: 28px 48px;
}

.topnav {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--nav-h);
  border-bottom: 1px solid var(--border);
  /* Solid surface — backdrop-filter on sticky chrome forces continuous
     repaint/compositing on scroll (major mobile jank source). */
  background: color-mix(in srgb, var(--bg) 94%, var(--surface, #0e1216));
}

.topnav__inner.shell,
.topnav .topnav__inner {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 16px;
  height: var(--nav-h);
  width: min(calc(100% - 32px), 1600px);
  max-width: 1600px;
  margin-inline: auto;
  padding-inline: 0;
  overflow: clip;
}

.topnav__brand-cluster {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 0 0 auto;
  min-width: 0;
}

.topnav__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-right: 4px;
  text-decoration: none;
  font-weight: 900;
  letter-spacing: 0.12em;
  font-size: 12px;
  color: var(--text);
  flex: 0 0 auto;
  white-space: nowrap;
}

.topnav__mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid color-mix(in srgb, var(--primary) 50%, transparent);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  color: var(--primary);
  font-size: 12px;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.topnav__wordmark {
  color: var(--text);
}

.topnav__nav {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  flex: 1 1 auto;
  min-width: 0;
  overflow: clip;
}

.topnav__links {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

.topnav__links--secondary {
  display: none;
}

.topnav__link {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  min-height: 36px;
  padding: 0 10px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition:
    color var(--dur) var(--ease),
    background var(--dur) var(--ease);
}

.topnav__link:hover,
.topnav__link:focus-visible,
.topnav__link[aria-current="page"] {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.topnav__more {
  position: relative;
  flex: 0 0 auto;
  display: none;
}

.topnav__more-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-height: 36px;
  padding: 0 10px;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-muted);
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition:
    color var(--dur) var(--ease),
    background var(--dur) var(--ease);
}

.topnav__more-btn:hover,
.topnav__more-btn:focus-visible,
.topnav__more-btn.is-active,
.topnav__more.is-open .topnav__more-btn {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.topnav__more-chevron {
  flex-shrink: 0;
  opacity: 0.85;
  transition: transform var(--dur) var(--ease);
}

.topnav__more.is-open .topnav__more-chevron {
  transform: rotate(180deg);
}

.topnav__more-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 60;
  min-width: 180px;
  max-width: min(220px, calc(100vw - 16px));
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-elevated);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

@media (max-width: 1150px) {
  .topnav__more-menu {
    left: auto;
    right: 0;
  }
}

.topnav__more-menu[hidden] {
  display: none !important;
}

.topnav__more-item {
  display: flex;
  align-items: center;
  min-height: 40px;
  padding: 0 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
}

.topnav__more-item:hover,
.topnav__more-item:focus-visible,
.topnav__more-item[aria-current="page"] {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.topnav__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  flex: 0 1 auto;
  min-width: 0;
}

.topnav__search {
  display: none;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  width: clamp(160px, 14vw, 260px);
  max-width: 260px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-muted);
  font-size: var(--fs-meta);
  font-weight: 600;
  cursor: pointer;
  flex: 0 0 auto;
  overflow: hidden;
}

.topnav__search-icon {
  flex-shrink: 0;
  opacity: 0.85;
}

.topnav__search-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.topnav__search:hover:not(:disabled) {
  border-color: var(--border-strong);
  color: var(--text-secondary);
}

.topnav__icon-btn {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  border: 0;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition:
    color var(--dur) var(--ease),
    background var(--dur) var(--ease);
}

.topnav__icon-btn:hover,
.topnav__icon-btn:focus-visible {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.topnav__icon-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.topnav__menu-btn {
  display: none;
  flex: 0 0 auto;
}

.topnav__status {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 7px 11px;
  border: 1px solid color-mix(in srgb, var(--online) 28%, transparent);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--online) 8%, transparent);
  color: #b9e8c0;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  white-space: nowrap;
  flex: 0 0 auto;
}

.topnav__status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--online);
  box-shadow: 0 0 12px var(--online);
  flex-shrink: 0;
}

.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 50;
  pointer-events: none;
  visibility: hidden;
}

.mobile-nav.is-open {
  pointer-events: auto;
  visibility: visible;
}

.mobile-nav__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  opacity: 0;
  transition: opacity var(--dur-slow) var(--ease);
}

.mobile-nav.is-open .mobile-nav__backdrop {
  opacity: 1;
}

.mobile-nav__panel {
  position: absolute;
  top: 0;
  left: 0;
  width: min(300px, 88vw);
  height: 100%;
  padding: 20px 16px;
  background: var(--surface-elevated);
  border-right: 1px solid var(--border);
  transform: translateX(-100%);
  transition: transform var(--dur-slow) var(--ease);
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
}

.mobile-nav.is-open .mobile-nav__panel {
  transform: translateX(0);
}

.mobile-nav__panel a,
.mobile-nav__link {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 14px;
}

.mobile-nav__panel a:hover,
.mobile-nav__panel a[aria-current="page"],
.mobile-nav__link:hover,
.mobile-nav__link[aria-current="page"] {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.mobile-nav__close {
  align-self: flex-end;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 20px;
}

.site-footer {
  padding: 24px 0 36px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: var(--fs-meta);
}

.site-footer__row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

@media (min-width: 1440px) {
  .topnav__links--secondary {
    display: flex;
  }

  .topnav__more {
    display: none;
  }

  .topnav__search {
    display: inline-flex;
  }

  .topnav__status {
    display: inline-flex;
  }
}

@media (min-width: 900px) and (max-width: 1439px) {
  .topnav__links--secondary {
    display: none;
  }

  .topnav__more {
    display: inline-flex;
  }

  .topnav__search {
    display: inline-flex;
    width: clamp(120px, 12vw, 180px);
    max-width: 180px;
  }

  .topnav__status {
    display: none;
  }

  .topnav__inner.shell,
  .topnav .topnav__inner {
    gap: 12px;
  }
}

@media (min-width: 900px) and (max-width: 1099px) {
  .topnav__link {
    padding: 0 8px;
  }

  .topnav__brand {
    margin-right: 0;
  }

  .topnav__nav {
    gap: 2px;
  }

  .topnav__search-label {
    display: none;
  }

  .topnav__search {
    width: 40px;
    max-width: 40px;
    padding: 0;
    justify-content: center;
    border-radius: 999px;
  }
}

@media (max-width: 899px) {
  .topnav__nav {
    display: none;
  }

  .topnav__menu-btn {
    display: inline-grid;
  }

  .topnav__status,
  .topnav__search {
    display: none;
  }

  .topnav__wordmark {
    display: none;
  }

  .topnav__inner.shell,
  .topnav .topnav__inner {
    gap: 10px;
    width: min(calc(100% - 24px), 1600px);
  }

  .topnav__actions {
    gap: 6px;
  }
}

.gm-banner-host {
  position: sticky;
  top: var(--nav-h, 56px);
  z-index: 35;
}

.gm-banner {
  overflow: hidden;
  /* Avoid max-height animation (layout thrash). Opacity + transform only. */
  opacity: 0;
  transform: translateY(-6px);
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface-elevated, #12161c) 96%, var(--bg));
  transition:
    opacity 220ms var(--ease, ease),
    transform 220ms var(--ease, ease);
}

.gm-banner--in {
  opacity: 1;
  transform: translateY(0);
}

.gm-banner--out {
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
}

.gm-banner--broadcast {
  background: color-mix(in srgb, var(--danger) 18%, var(--surface));
  border-bottom-color: color-mix(in srgb, var(--danger) 45%, transparent);
}

.gm-banner--announce {
  background: color-mix(in srgb, var(--primary) 14%, var(--surface));
  border-bottom-color: color-mix(in srgb, var(--primary) 40%, transparent);
}

.gm-banner--motd {
  background: color-mix(in srgb, var(--blue) 12%, var(--surface));
  border-bottom-color: color-mix(in srgb, var(--blue) 35%, transparent);
}

.gm-banner__inner {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  padding-block: 10px;
}

.gm-banner__kind {
  flex-shrink: 0;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
  padding: 4px 8px;
  border-radius: var(--radius-sm, 6px);
  border: 1px solid color-mix(in srgb, var(--primary) 35%, transparent);
  background: color-mix(in srgb, var(--primary) 10%, transparent);
}

.gm-banner--broadcast .gm-banner__kind {
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger) 40%, transparent);
  background: color-mix(in srgb, var(--danger) 12%, transparent);
}

.gm-banner--motd .gm-banner__kind {
  color: var(--blue);
  border-color: color-mix(in srgb, var(--blue) 40%, transparent);
  background: color-mix(in srgb, var(--blue) 12%, transparent);
}

.gm-banner__text {
  flex: 1;
  min-width: 0;
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text);
}

.gm-banner__timer {
  flex-shrink: 0;
  font-size: 12px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
}

.gm-banner__close {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: var(--radius-sm, 6px);
  background: transparent;
  color: var(--text-muted);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}

.gm-banner__close:hover,
.gm-banner__close:focus-visible {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

@media (max-width: 599px) {
  .gm-banner__inner {
    flex-wrap: wrap;
    gap: 8px;
  }

  .gm-banner__timer {
    order: 3;
  }
}