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640px){.tz-dialog__footer{flex-direction:column-reverse}}.tz-menu{position:relative;display:inline-flex}.tz-menu__list{position:absolute;top:calc(100% + var(--space-2));right:0;z-index:var(--layer-overlay);min-width:13rem;padding:var(--space-2);background-color:var(--color-surface);border:var(--border-hairline) solid var(--color-rule);border-radius:var(--radius-card);box-shadow:var(--shadow-lg)}.tz-menu__list--start{right:auto;left:0}.tz-menu__item{display:flex;gap:var(--space-3);align-items:center;width:100%;padding:var(--space-2) var(--space-3);font-size:var(--text-sm);font-weight:var(--font-weight-semibold);color:var(--color-ink);text-align:left;cursor:pointer;background-color:transparent;border:0;border-radius:var(--radius-control)}.tz-menu__item:hover{background-color:var(--color-surface-2)}.tz-menu__item:disabled{cursor:not-allowed;opacity:.45}.tz-menu__item--danger{color:var(--color-danger)}.tz-menu__separator{height:var(--border-hairline);margin:var(--space-2) 0;background-color:var(--color-rule)}.tz-state{display:grid;gap:var(--space-3);justify-items:center;padding:var(--space-7) var(--space-5);text-align:center;background-color:var(--color-surface);border:var(--border-hairline) solid var(--color-rule);border-radius:var(--radius-card)}.tz-state--plain{background-color:transparent;border-color:transparent}.tz-state__mark{font-size:var(--text-2xl);line-height:var(--leading-tight);color:var(--color-ink-soft)}.tz-state--error .tz-state__mark{color:var(--color-danger)}.tz-state__title{font-size:var(--text-lg);font-weight:var(--font-weight-bold);line-height:var(--leading-tight)}.tz-state__description{max-width:46ch;font-size:var(--text-sm);color:var(--color-ink-soft)}.tz-spinner--large{width:var(--space-6);height:var(--space-6)}.tz-skeleton{height:var(--space-4);background-color:var(--color-rule);border-radius:var(--radius-control);animation:tz-pulse var(--motion-slow) var(--ease-out) infinite alternate}.tz-skeleton--title{height:var(--space-5)}.tz-skeleton--block{height:var(--space-8);border-radius:var(--radius-card)}@keyframes tz-pulse{to{opacity:.4}}.auth-layout{display:flex;align-items:center}.auth-card{width:min(480px,100%);margin:0 auto}.auth-form{display:grid;gap:var(--space-4);margin-top:var(--space-5)}.app-nav{display:flex;gap:var(--space-4);align-items:center;justify-content:space-between}.app-nav__brand{color:inherit;text-decoration:none}.app-nav__action{border-radius:var(--radius-pill)}.session-screen{display:grid;gap:var(--space-3);grid-template-rows:auto auto minmax(0,1fr);height:100vh;padding:var(--space-3);background-color:var(--color-ground)}.session-screen__top{display:grid;gap:var(--space-2)}.session-screen__header{display:flex;flex-wrap:wrap;gap:var(--space-2) var(--space-4);align-items:center;justify-content:space-between}.session-screen__identity{display:flex;gap:var(--space-3);align-items:center;min-width:0}.session-screen__name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.session-sharing{display:grid;gap:var(--space-2);min-width:0}.session-sharing__controls{display:flex;gap:var(--space-2);align-items:center}.session-sharing__address{flex:0 1 14rem;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.session-sharing__switch{display:inline-flex;flex:none;align-items:center}.session-screen__body{display:grid;gap:var(--space-3);grid-template-columns:minmax(0,1fr) minmax(260px,320px);min-height:0}.session-screen__board{display:grid;min-height:0;place-items:center;overflow:hidden}@media (max-width: 900px){.session-screen{height:auto;grid-template-rows:none}.session-screen__body{grid-template-columns:1fr}.session-screen__board{min-height:60vh}}.shared-board{display:grid;gap:var(--space-4);grid-template-rows:auto minmax(0,1fr);height:100vh;padding:var(--space-5);background-color:var(--color-ground)}.shared-board__board{display:grid;min-height:0;place-items:center;overflow:hidden}.card-list{display:grid;gap:var(--space-4);padding:0;margin:var(--space-5) 0 0;list-style:none}.card-list--columns{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}.card-list__name{color:inherit;text-decoration:none}.card-list__name:hover{text-decoration:underline}.card-list__item{position:relative}.card-list__link:after{position:absolute;top:0;right:0;bottom:0;left:0;content:"";border-radius:var(--radius-card)}.card-list__controls{position:relative;z-index:1}.name-button{display:inline-flex;gap:var(--space-2);align-items:center;padding:0;text-align:left;cursor:pointer;background:none;border:0}.name-button:hover{text-decoration:underline}.editable-name__field{width:min(24rem,100%)}.course-header{display:grid;gap:var(--space-3);grid-template-columns:auto minmax(0,1fr);align-items:start}.course-header__back{display:grid;height:calc(var(--text-3xl) * var(--leading-tight));place-items:center}@media (max-width: 640px){.course-header{grid-template-columns:minmax(0,1fr)}}.programme__row{position:relative;display:flex;gap:var(--space-3);align-items:center;justify-content:space-between}.programme__name:after{position:absolute;inset:calc(var(--space-5) * -1) calc(var(--space-5) * -1) 0;content:"";border-radius:var(--radius-card)}.programme__menu{position:relative;z-index:1}.programme__lead{display:flex;gap:var(--space-3);align-items:center;min-width:0}.programme__handle{position:relative;z-index:1;flex:none}.programme__sessions{margin-top:var(--space-4)}.sessions{display:grid;gap:var(--space-4)}.sessions__list{display:grid;gap:var(--space-3);padding:0;margin:0;list-style:none}.sessions__item{display:flex;flex-wrap:wrap;gap:var(--space-3);align-items:center;justify-content:space-between}.sessions__what{display:flex;flex-wrap:wrap;gap:var(--space-3);align-items:center;min-width:0}.sessions__launch{display:flex}.profile{display:grid;gap:var(--space-5);margin:0}.profile__row{display:grid;gap:var(--space-1) var(--space-5);grid-template-columns:minmax(6rem,10rem) minmax(0,1fr);align-items:baseline}.profile__label{margin:0}.profile__value{min-width:0;margin:0}@media (max-width: 640px){.profile__row{grid-template-columns:minmax(0,1fr)}}.preference{display:grid;gap:var(--space-4);justify-items:start}