.app-shell { min-width: 0; min-height: 100vh; display: grid; grid-template-columns: 238px minmax(0, 1fr); }
.sidebar { position: sticky; top: 0; align-self: start; min-height: 100vh; display: flex; flex-direction: column; padding: 24px 20px; border-right: 1px solid var(--color-border); background: #fff; }
.sidebar__brand { margin-bottom: 29px; }
.sidebar__logo-link { width: 100%; display: block; padding: 0; border: 0; background: transparent; }
.sidebar__logo { width: 220px; max-width: 100%; height: auto; }
.sidebar__program { display: flex; align-items: center; gap: 12px; margin: 28px 10px 0; padding-top: 23px; border-top: 1px solid var(--color-border); }
.sidebar__program-icon { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 13px; color: var(--color-violet); background: var(--color-surface-soft); }
.sidebar__program-icon svg { width: 24px; height: 24px; }
.sidebar__program small { display: block; color: var(--color-text-soft); font-size: 0.59rem; letter-spacing: 0.12em; font-weight: 700; }
.sidebar__program strong { display: block; margin-top: 1px; font-size: 1.24rem; color: var(--color-primary); }
.sidebar__label { margin: 0 12px 12px; color: #73717c; font-size: 0.7rem; font-weight: 500; }
.sidebar__nav { display: grid; gap: 7px; }
.sidebar__nav .nav-link { justify-content: flex-start; gap: 11px; width: 100%; padding: 13px 14px; border-radius: 11px; font-size: 0.88rem; text-align: left; }
.sidebar__nav .nav-link svg { width: 20px; height: 20px; flex: 0 0 20px; }
.sidebar__nav .nav-link.is-active { background: #f1ecfb; color: var(--color-primary); box-shadow: inset 3px 0 var(--color-violet); }
.sidebar__note { position: relative; margin: 40px 3px 30px; padding: 23px 19px; border: 1px solid #eee8f7; border-radius: 16px; background: linear-gradient(145deg, #faf8fd, #fff); color: var(--color-primary); }
.sidebar__note-symbol { display: block; color: var(--color-accent); font-size: 1.8rem; line-height: 1; }
.sidebar__note p { margin: 12px 0 7px; font-size: 0.95rem; font-weight: 500; line-height: 1.5; }
.sidebar__note > span:last-child { font-size: 0.76rem; color: var(--color-text-soft); }
.sidebar__footer { display: grid; justify-items: center; gap: 13px; margin-top: auto; padding-top: 35px; color: var(--color-text-soft); font-size: 0.73rem; }
.brand-spectrum { width: 76px; height: 3px; border-radius: 5px; background: linear-gradient(90deg, var(--color-primary-strong), var(--color-secondary), var(--color-accent)); }
.app-main { min-width: 0; padding: 0 40px; }
.topbar { min-height: 94px; max-width: var(--max-width); margin: 0 auto 25px; display: flex; align-items: center; justify-content: space-between; gap: 18px; border-bottom: 1px solid var(--color-border); }
.topbar__location { display: flex; align-items: center; gap: 9px; color: var(--color-text-soft); font-size: 0.76rem; }
.topbar__location strong { color: var(--color-primary); font-weight: 500; }
.topbar__location span span { margin: 0 8px; color: #aaa4b6; }
.topbar__dot { width: 7px; height: 7px; border-radius: 50%; background: var(--color-violet); }
.topbar__account { display: flex; align-items: center; gap: 10px; min-width: 0; }
.topbar__avatar { display: grid; place-items: center; flex-shrink: 0; width: 37px; height: 37px; border-radius: 50%; background: #eee7f8; color: var(--color-violet); font-size: 0.75rem; font-weight: 700; }
.topbar__identity { display: grid; min-width: 0; }
.topbar__identity strong { color: var(--color-primary); font-size: 0.78rem; font-weight: 500; }
.topbar__identity span { max-width: 200px; overflow: hidden; text-overflow: ellipsis; color: var(--color-text-soft); font-size: 0.65rem; }
.topbar .topbar__logout { margin-left: 10px; padding: 7px 13px; font-size: 0.75rem; background: #fff; }
.page-content { max-width: var(--max-width); margin: 0 auto; min-width: 0; }
.page-content:focus { outline: none; }
.app-footer { max-width: var(--max-width); margin: 36px auto 0; padding: 20px 0 26px; border-top: 1px solid var(--color-border); display: flex; justify-content: space-between; gap: 16px; font-size: 0.69rem; color: var(--color-text-soft); }
.skip-link { position: fixed; z-index: 100; top: 10px; left: 10px; padding: 10px 16px; border-radius: 8px; background: var(--color-primary); color: #fff; transform: translateY(-200%); }
.skip-link:focus { transform: translateY(0); }
.grid-hero { display: grid; grid-template-columns: 1.3fr 0.9fr; gap: var(--space-6); }
.stack-lg { display: grid; gap: var(--space-6); }
.stack-md { display: grid; gap: var(--space-4); }

@media (min-width: 1600px) {
  .app-shell { grid-template-columns: 264px minmax(0, 1fr); }
  .sidebar { padding: 26px 30px; }
}
@media (max-width: 1180px) {
  .app-main { padding: 0 26px; }
  .topbar__identity span { display: none; }
  .topbar__location { font-size: 0.72rem; }
}
@media (max-width: 1024px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: static; min-height: auto; padding: 13px 26px; flex-direction: row; align-items: center; gap: 24px; border-right: 0; border-bottom: 1px solid var(--color-border); }
  .sidebar__brand { margin: 0 auto 0 0; display: flex; align-items: center; }
  .sidebar__logo { width: 177px; }
  .sidebar__program, .sidebar__label, .sidebar__note, .sidebar__footer { display: none; }
  .sidebar__nav { display: flex; gap: 8px; }
  .sidebar__nav .nav-link { white-space: nowrap; font-size: 0.8rem; }
  .sidebar__nav .nav-link.is-active { box-shadow: none; }
  .topbar { min-height: 74px; margin-bottom: 22px; }
  .grid-hero { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .sidebar { min-height: 65px; padding: 10px 17px 12px; flex-wrap: nowrap; gap: 8px; }
  .sidebar__brand { margin: 0; width: 100%; }
  .sidebar__logo-link { width: auto; }
  .sidebar__logo { width: 159px; }
  .sidebar__nav { position: fixed; z-index: 70; right: 0; bottom: 0; left: 0; display: flex; width: 100%; min-width: 0; gap: 3px; padding: 9px 8px calc(9px + env(safe-area-inset-bottom, 0px)); border-top: 1px solid rgba(34, 10, 99, 0.1); background: rgba(255, 255, 255, 0.97); box-shadow: 0 -10px 28px rgba(34, 10, 99, 0.09); backdrop-filter: blur(14px); }
  .sidebar__nav .nav-link { min-width: 0; min-height: 58px; justify-content: center; flex: 1 1 0; flex-direction: column; padding: 6px 4px; gap: 4px; border-radius: 14px; color: var(--color-text-soft); font-size: 0.66rem; font-weight: 700; line-height: 1.1; text-align: center; white-space: normal; }
  .sidebar__nav .nav-link svg { width: 20px; height: 20px; flex-basis: 20px; }
  .sidebar__nav .nav-link.is-active { color: var(--color-primary); background: #f1ecfb; box-shadow: inset 0 0 0 1px rgba(87, 41, 255, 0.15); }
  .app-main { padding: 0 17px calc(84px + env(safe-area-inset-bottom, 0px)); }
  .topbar { min-height: 66px; margin-bottom: 19px; }
  .topbar__location { display: none; }
  .topbar__account { width: 100%; }
  .topbar__identity strong { font-size: 0.8rem; }
  .topbar__identity span { display: block; font-size: 0.64rem; }
  .topbar .topbar__logout { margin-left: auto; }
  .topbar__avatar { width: 33px; height: 33px; }
  .app-footer { margin-top: 25px; padding-bottom: 24px; flex-direction: column; gap: 4px; }
}

@media (max-width: 420px) {
  .sidebar { padding-inline: 12px; }
  .sidebar__nav { padding-inline: 5px; }
  .sidebar__nav .nav-link { min-height: 56px; padding-inline: 2px; font-size: 0.62rem; }
  .app-main { padding-inline: 12px; }
  .topbar { margin-bottom: 14px; }
  .topbar__identity span { max-width: 168px; }
  .topbar .topbar__logout { min-height: 40px; padding-inline: 11px; }
}