/* ── Sidebar ── */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  width: 200px;
  padding: 32px 0 24px 16px;
  border-right: 1px solid rgba(255, 255, 255, 0.04);
  background: linear-gradient(
    180deg,
    rgba(10, 5, 18, 0.95),
    rgba(10, 5, 18, 0.7)
  );
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
  z-index: 100;
  /* Off-screen by default (narrow) */
  transform: translateX(-100%);
}
/* Transition added after page load to avoid initial flash */
.sidebar.transition-ready {
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.page.transition-ready {
  transition: padding-left 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.sidebar.open {
  transform: translateX(0) !important;
}
@media (min-width: 1024px) {
  .sidebar {
    transform: translateX(0);
  }
  .page {
    padding-left: 200px;
  }
}
.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-left: -16px;
  width: calc(100% + 16px);
  padding: 0 16px;
  margin-bottom: 10px;
}
.sidebar-favicon-link {
  width: 0;
  opacity: 0;
  pointer-events: none;
  overflow: visible;
  transition: opacity 0.4s ease, width 0.4s ease;
  flex-shrink: 0;
}
.sidebar-favicon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  filter: drop-shadow(0 0 8px rgba(200, 160, 60, 0.15));
  transform: translateY(-2px);
}
.sidebar-logo {
  font-family: var(--kh-font-cinzel);
  font-size: 0.7rem;
  color: var(--kh-link-muted);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 0;
  line-height: 1.2;
  transition: font-size 0.4s ease;
}
.sidebar-title {
  font-family: var(--kh-font-cinzel);
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
  line-height: 1.2;
  transition: font-size 0.4s ease;
}
.sidebar-title span {
  color: var(--kh-gold);
}
.sidebar-header.sidebar-favicon-visible .sidebar-favicon-link {
  width: 28px;
  margin-left: -4px;
  opacity: 1;
  pointer-events: auto;
}
.sidebar-header.sidebar-favicon-visible .sidebar-logo {
  font-size: 0.6rem;
}
.sidebar-header.sidebar-favicon-visible .sidebar-title {
  font-size: 0.75rem;
}
.sidebar-nav {
  list-style: none;
  flex: 1;
}
.sidebar-nav li {
  margin-bottom: 2px;
}
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 8px 5px 12px;

  font-size: 0.72rem;
  color: var(--kh-text-muted);
  text-decoration: none;
  transition: 0.2s, color 0.5s ease, border-left-color 0.5s ease,
    background 0.5s ease;
  border-left: 2px solid transparent;
  line-height: 1.3;
  position: relative;
}
.sidebar-nav a .num {
  color: var(--kh-text-muted2);
  font-size: 0.65rem;
  width: 18px;
  text-align: right;
  flex-shrink: 0;
}
.sidebar-nav a:hover {
  color: var(--kh-text-light);
  background: rgba(255, 255, 255, 0.02);
  border-left-color: rgba(212, 175, 55, 0.2);
}
.sidebar-nav a.active {
  color: var(--kh-gold);
  border-left-color: var(--kh-gold);
  background: linear-gradient(
    90deg,
    rgba(212, 175, 55, 0.06),
    rgba(212, 175, 55, 0.025) 80%,
    transparent 95%
  );
}
.sidebar-nav a.leaving {
  color: rgba(212, 175, 55, 0.3);
  border-left-color: rgba(212, 175, 55, 0.15);
  background: linear-gradient(
    90deg,
    rgba(212, 175, 55, 0.03),
    rgba(212, 175, 55, 0.01) 80%,
    transparent 95%
  );
}
.sidebar-era {
  font-size: 0.55rem;
  color: var(--kh-text-muted2);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  padding: 10px 8px 4px 12px;
  font-weight: 500;
  transition: 0.3s;

}
.sidebar-era .era-label {
  transition: 0.3s;
}
.sidebar-era .era-desc {
  color: #7a6a88;
  font-weight: 500;
  text-transform: none;
}
.sidebar-era.active .era-label {
  color: var(--kh-gold);
}
.sidebar-progress {
  margin-top: auto;
  padding: 12px 16px 0 16px;
  margin-left: -16px;
  width: calc(100% + 16px);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}
.sidebar-progress-bar {
  height: 6px;
  background: rgba(255, 255, 255, 0.04);

  overflow: hidden;
  margin: 6px 0 2px;
}
.sidebar-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--kh-gold), #b8860b);

  width: 0%;
  transition: 0.5s;
}
.sidebar-progress-text {
  font-size: 0.65rem;
  color: #7a6a88;
  display: flex;
  justify-content: space-between;
}

/* ── Sidebar bottom actions ── */
.sidebar-actions {
  padding: 8px 16px 0 16px;
  margin-left: -16px;
  width: calc(100% + 16px);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 8px;
}
.sidebar-btn {
  font-size: 0.62rem;
  padding: 5px 8px;


  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--kh-text-muted);
  font-family: var(--kh-font-inter);
  transition: 0.2s;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 6px;
}
.sidebar-btn:hover {
  background: rgba(212, 175, 55, 0.06);
  color: var(--kh-text-light);
  border-color: rgba(212, 175, 55, 0.12);
}
.sidebar-btn i,
.sidebar-btn .kh-icon {
  width: 12px;
  text-align: center;
  font-size: 0.55rem;
}
.sidebar-btn.danger:hover {
  background: rgba(220, 60, 60, 0.06);
  color: #f06060;
  border-color: rgba(220, 60, 60, 0.12);
}

/* ── Sidebar overlay ── */
.sidebar-overlay {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(0, 0, 0, 0.65);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}
.sidebar-overlay.open {
  opacity: 1;
  pointer-events: auto;
}
@media (min-width: 1024px) {
  .sidebar-overlay {
    display: none;
  }
}

/* ── Sidebar toggle button (narrow screens) ── */
.sidebar-toggle {
  position: fixed;
  bottom: 16px;
  left: 12px;
  z-index: 101;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(212, 175, 55, 0.15);
  background: rgba(10, 5, 18, 0.85);
  -webkit-backdrop-filter: var(--kh-blur);
  backdrop-filter: var(--kh-blur);
  color: var(--kh-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.3s ease, transform 0.3s ease;
  cursor: pointer;
  opacity: 1;
  transform: translateY(0);
}
.sidebar-toggle:hover {
  border-color: rgba(212, 175, 55, 0.3);
  color: var(--kh-gold);
}
.sidebar-toggle.open {
  opacity: 0;
  transform: translateX(40px);
  pointer-events: none;
}
@media (min-width: 1024px) {
  .sidebar-toggle {
    opacity: 0;
    transform: translateX(40px);
    pointer-events: none;
  }
}