/* ---------- Sidebar console ---------- */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-w);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 1.5rem 1rem;
  background: color-mix(in srgb, var(--surface) 78%, transparent);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-right: 1px solid var(--line);
  z-index: 200;
  transition: width var(--t) var(--ease), transform var(--t) var(--ease);
}

.sidebar__top {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 0 0.4rem;
}

.monogram {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 11px;
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--accent) 34%, transparent),
    color-mix(in srgb, var(--accent) 6%, transparent)
  );
  border: 1px solid var(--line-strong);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text);
  transition: background var(--t-slow) var(--ease);
}

/* ---------- Nav ---------- */
.nav {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
}
.nav__list {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.nav__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.62rem 0.85rem;
  border-radius: var(--r-sm);
  color: var(--text-3);
  white-space: nowrap;
  transition: color var(--t) var(--ease), background var(--t) var(--ease);
}
.nav__index {
  font-size: 0.7rem;
  opacity: 0.65;
  transition: color var(--t) var(--ease), opacity var(--t) var(--ease),
    font-size var(--t) var(--ease);
}
.nav__label {
  font-size: 0.95rem;
  font-weight: 500;
}
.nav__link:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}
.nav__link.is-active {
  color: var(--text);
  background: color-mix(in srgb, var(--accent) 13%, transparent);
}
.nav__link.is-active .nav__index {
  color: var(--accent);
  opacity: 1;
}
.nav__link.is-active::before {
  content: "";
  position: absolute;
  left: 0.2rem;
  top: 24%;
  bottom: 24%;
  width: 3px;
  border-radius: 3px;
  background: var(--accent);
  box-shadow: 0 0 12px color-mix(in srgb, var(--accent) 70%, transparent);
}

/* ---------- Sidebar bottom ---------- */
.sidebar__bottom {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 0 0.4rem;
}

.sidebar__socials {
  display: flex;
  gap: 0.5rem;
}
.iconbtn {
  display: grid;
  place-items: center;
  width: 2.15rem;
  height: 2.15rem;
  border-radius: 9px;
  border: 1px solid var(--line);
  color: var(--text-2);
  transition: border-color var(--t) var(--ease), background var(--t) var(--ease),
    transform var(--t) var(--ease);
}
.iconbtn:hover {
  color: var(--text);
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  transform: translateY(-2px);
}
.iconbtn__img {
  width: 1.05rem;
  height: 1.05rem;
  object-fit: contain;
}
.iconbtn__svg {
  display: block;
}

.collapse-btn {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 1.85rem;
  height: 1.85rem;
  margin-top: 0.15rem;
  border-radius: 8px;
  border: 1px solid var(--line);
  color: var(--text-3);
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease),
    background var(--t) var(--ease);
}
.collapse-btn:hover {
  color: var(--text);
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  background: color-mix(in srgb, var(--accent) 12%, transparent);
}
.collapse-btn__chevron {
  width: 0.5rem;
  height: 0.5rem;
  border-left: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform var(--t) var(--ease);
}

/* ---------- Collapsed state ---------- */
/* justify-content/flex-direction wait for .is-collapsed-settled to avoid a jump. */
body.is-collapsed .sidebar {
  width: var(--sidebar-collapsed-w);
}
body.is-collapsed .nav__label {
  display: none;
}
body.is-collapsed .nav__index {
  font-size: 0.78rem;
  opacity: 0.9;
}
body.is-collapsed .collapse-btn__chevron {
  transform: rotate(-135deg);
}
body.is-collapsed.is-collapsed-settled .sidebar__top {
  justify-content: center;
}
body.is-collapsed.is-collapsed-settled .nav__link {
  justify-content: center;
  padding: 0.62rem 0;
}
body.is-collapsed.is-collapsed-settled .sidebar__socials {
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* ---------- App shell ---------- */
.shell {
  margin-left: var(--sidebar-w);
  transition: margin-left var(--t) var(--ease);
}
body.is-collapsed .shell {
  margin-left: var(--sidebar-collapsed-w);
}

/* ---------- Section scaffolding ---------- */
.section {
  position: relative;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: clamp(4.5rem, 11vh, 8rem) var(--gutter);
}

.section-head {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  margin-bottom: 2.75rem;
}
.section-head__index {
  flex-shrink: 0;
  font-size: 0.82rem;
  color: var(--accent);
  padding-top: 0.55rem;
  position: relative;
  padding-left: 1.4rem;
}
.section-head__index::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85rem;
  width: 1rem;
  height: 2px;
  background: var(--accent);
  box-shadow: 0 0 10px color-mix(in srgb, var(--accent) 70%, transparent);
}
.section-head__title {
  font-size: clamp(1.9rem, 4.5vw, 2.75rem);
}
.section-head__sub {
  color: var(--text-3);
  margin-top: 0.4rem;
  font-size: 1rem;
}

/* ---------- Mobile top bar + scrim (shown in responsive.css) ---------- */
.mobilebar {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 210;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 1rem;
  background: color-mix(in srgb, var(--surface) 85%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.mobilebar__brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.mobilebar__name {
  font-family: var(--font-display);
  font-weight: 600;
}
.mobilebar__toggle {
  display: grid;
  gap: 5px;
  width: 2.6rem;
  height: 2.6rem;
  place-content: center;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
}
.mobilebar__toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--t) var(--ease), opacity var(--t) var(--ease);
}
body.drawer-open .mobilebar__toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
body.drawer-open .mobilebar__toggle span:nth-child(2) {
  opacity: 0;
}
body.drawer-open .mobilebar__toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.scrim {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 190;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(3px);
}
body.drawer-open .scrim {
  display: block;
}

/* ---------- Footer ---------- */
.footer {
  margin-top: 4.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--text-3);
  font-size: 0.9rem;
}
.footer__socials {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}