.app-layout { display: flex; flex-direction: column; height: 100%; min-height: 0; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-elevated);
  flex-shrink: 0;
}

.topbar .wordmark { font-size: 1.5rem; cursor: pointer; }
.topbar-back { display: inline-flex; text-decoration: none; color: inherit; }
.topbar-tools { display: flex; align-items: center; gap: 0.2rem; }

.notif-bell { position: relative; }
.notif-dot {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent, #e53e3e);
  pointer-events: none;
}

.main-wrap {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 1.5rem 1.75rem 2rem;
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
  gap: 1rem;
  width: 100%;
  max-width: 110rem;
  max-height: 70rem;
  margin-inline: auto;
}

.card {
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1rem 1.25rem 1.125rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-elevated);
  box-shadow: var(--card-shadow);
  transform: scale(1.005);
  animation: card-settle 350ms var(--ease) forwards;
  animation-delay: calc(var(--i, 0) * 55ms + 60ms);
  transition: border-color 260ms ease, box-shadow 260ms ease;
}

@media (hover: hover) and (pointer: fine) {
  .card:hover {
    border-color: var(--color-border-strong);
    box-shadow: var(--card-shadow-hover);
  }
}

.card-wide { grid-column: 1; }
.card-full { grid-column: 2; }

.card-header { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; }
.card-heading { display: flex; align-items: center; gap: 0.45rem; color: var(--color-muted); }
.card-icon { display: block; flex-shrink: 0; }
.card-title {
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: inherit;
}
.card-actions { display: inline-flex; align-items: center; gap: 0.4rem; flex-shrink: 0; }

.empty-state {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  color: var(--color-muted);
  font-size: 0.85rem;
  text-align: center;
}
.empty-state[hidden] { display: none; }

.primary-button,
.primary-button-ghost,
.ghost-button {
  display: inline-flex;
  align-items: center;
  font-family: var(--main-font), sans-serif;
  cursor: pointer;
}

.primary-button {
  gap: 0.4rem;
  padding: 0.4rem 0.7rem 0.4rem 0.6rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  color: white;
  font-size: 0.82rem;
  font-weight: 600;
  transition: filter 160ms ease, var(--press-transition);
}
.primary-button svg { flex-shrink: 0; }
.primary-button:focus-visible,
.ghost-button:focus-visible,
.row-icon-button:focus-visible,
.avatar:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--color-elevated), 0 0 0 4px var(--focus-shadow);
}
.primary-button:disabled { opacity: 0.55; cursor: not-allowed; filter: none; }

.primary-button-ghost {
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-muted);
  font-size: 0.8rem;
  font-weight: 600;
}

.ghost-button {
  gap: 0.35rem;
  padding: 0.4rem 0.65rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-muted);
  font-size: 0.8rem;
  font-weight: 600;
  transition: border-color 180ms ease, color 180ms ease, background 180ms ease, var(--press-transition);
}

@media (hover: hover) and (pointer: fine) {
  .primary-button:hover { filter: brightness(1.08); }
  .primary-button-ghost:hover,
  .ghost-button:hover {
    border-color: var(--card-border-hover);
    color: var(--color-base);
    background: var(--hover-bg);
  }
}

@keyframes card-settle { to { transform: none; } }

[data-role-view="owner"] [data-role="student"],
[data-role-view="student"] [data-role="owner"] { display: none; }

.row-icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.85rem;
  height: 1.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-muted);
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease, var(--press-transition);
}

@media (hover: hover) and (pointer: fine) {
  .row-icon-button:hover {
    color: var(--color-accent);
    border-color: color-mix(in srgb, var(--color-accent) 40%, transparent);
    background: var(--hover-bg);
  }
}

.ui-dialog {
  position: fixed;
  inset: 0;
  margin: auto;
  padding: 0;
  width: min(26rem, calc(100vw - 2rem));
  max-height: calc(100vh - 4rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-elevated);
  color: var(--color-base);
  box-shadow:
    0 3px 4px hsl(220 20% 14% / 0.09),
    0 0.5px 2px hsl(220 16% 12% / 0.06);
  opacity: 0;
  transform: scale(0.94);
  transition:
    opacity 140ms var(--ease),
    transform 140ms var(--ease),
    display 140ms allow-discrete,
    overlay 140ms allow-discrete;
}

.ui-dialog[open] {
  opacity: 1;
  transform: scale(1);
  transition:
    opacity 260ms cubic-bezier(0.34, 1.56, 0.64, 1),
    transform 260ms cubic-bezier(0.34, 1.56, 0.64, 1),
    display 260ms allow-discrete,
    overlay 260ms allow-discrete;
}

.ui-dialog[open].close {
  opacity: 0;
  transform: scale(0.96);
  transition:
    opacity 180ms var(--ease),
    transform 180ms var(--ease);
}

@starting-style {
  .ui-dialog[open] {
    opacity: 0;
    transform: scale(0.94);
  }
}

.ui-dialog::backdrop {
  background: light-dark(hsl(220 25% 8% / 0.2), hsl(220 25% 8% / 0.28));
  opacity: 0;
  transition:
    opacity 160ms var(--ease),
    display 160ms allow-discrete,
    overlay 160ms allow-discrete;
}

.ui-dialog[open]::backdrop {
  opacity: 1;
  transition:
    opacity 220ms var(--ease),
    display 220ms allow-discrete,
    overlay 220ms allow-discrete;
}

.ui-dialog[open].close::backdrop {
  opacity: 0;
  transition: opacity 180ms var(--ease);
}

@starting-style {
  .ui-dialog[open]::backdrop { opacity: 0; }
}

.dialog-form { display: flex; flex-direction: column; gap: 0.9rem; padding: 1.1rem 1.2rem 1.2rem; }
.dialog-header { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; }
.dialog-title { margin: 0; font-size: 1rem; font-weight: 700; line-height: 1; color: var(--color-base); }
.dialog-field { display: flex; flex-direction: column; gap: 0.3rem; }
.dialog-field > span {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.dialog-field input,
.dialog-field select {
  font: inherit;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-base);
  transition: border-color 140ms ease, box-shadow 140ms ease;
}

.dialog-field input:focus-visible,
.dialog-field select:focus-visible {
  outline: none;
  border-color: var(--color-accent-half);
  box-shadow: 0 0 0 3px var(--focus-shadow);
}
.slot-picker-calendar {
  padding: 0.2rem 0.1rem 0;
}
.dialog-error { margin: -0.35rem 0 0; color: var(--color-accent); font-size: 0.8rem; }
.dialog-error[hidden] { display: none; }
.dialog-footer { display: flex; justify-content: flex-end; gap: 0.5rem; margin-top: 0.1rem; }

.notifications-dialog {
  width: min(34rem, calc(100vw - 2rem));
}

.notifications-dialog .dialog-form {
  gap: 0.75rem;
}

.notif-request-list {
  list-style: none;
  margin: 0;
  padding: 0.1rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  max-height: min(60vh, 28rem);
  overflow: auto;
}

.notif-empty {
  padding: 0.95rem 0.7rem;
  text-align: center;
  color: var(--color-muted);
  font-size: 0.84rem;
}

.notif-request-row {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.7rem;
  background: color-mix(in srgb, var(--color-elevated) 86%, var(--color-surface));
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.notif-request-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 0.55rem;
}

.notif-request-email {
  font-size: 0.97rem;
  font-weight: 700;
  color: var(--color-base);
}

.notif-request-when {
  font-size: 0.84rem;
  color: var(--color-muted);
  font-weight: 600;
}

.notif-request-note-wrap {
  margin-top: -0.05rem;
}

.notif-request-note {
  margin: 0;
  padding: 0.45rem 0.55rem;
  border-radius: var(--radius-sm);
  border: 1px solid color-mix(in srgb, var(--color-border) 86%, transparent);
  background: color-mix(in srgb, var(--color-surface) 80%, var(--color-elevated));
  color: var(--color-muted);
  font-size: 0.82rem;
  line-height: 1.35;
}

.notif-request-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.notif-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.34rem;
  padding: 0.34rem 0.62rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-family: var(--main-font), sans-serif;
  font-size: 0.79rem;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  transition: border-color 140ms ease, background 140ms ease, color 140ms ease, filter 140ms ease, var(--press-transition);
}

.notif-action-btn svg {
  flex-shrink: 0;
}

.notif-action-accept {
  background: var(--color-accent);
  border-color: color-mix(in srgb, var(--color-accent) 75%, black);
  color: white;
}

.notif-action-decline {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-muted);
}

@media (hover: hover) and (pointer: fine) {
  .notif-action-accept:hover:not(:disabled) {
    filter: brightness(1.06);
  }

  .notif-action-decline:hover:not(:disabled) {
    border-color: var(--color-border-strong);
    color: var(--color-base);
    background: var(--hover-bg);
  }
}

.notif-action-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.toast-stack {
  position: fixed;
  top: 1rem;
  left: 50%;
  right: auto;
  bottom: auto;
  transform: translateX(-50%);
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  overflow: visible;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  pointer-events: none;
  width: max-content;
  max-width: min(26rem, calc(100vw - 2rem));
  z-index: 2147483647;
}

.toast {
  pointer-events: auto;
  width: fit-content;
  max-width: min(26rem, calc(100vw - 2rem));
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.42rem 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-elevated);
  color: var(--color-base);
  font-size: 0.85rem;
  box-shadow:
    0 8px 24px 0 hsl(220 20% 10% / 0.09),  
    0 1px 2px 0 hsl(220 20% 10% / 0.13); 
  opacity: 0;
  transform: translateY(-6px) scale(0.98);
  transition: opacity 200ms var(--ease), transform 200ms var(--ease);
}

.toast.is-visible {
  opacity: 1;
  transform: none;
}

.toast.is-leaving {
  opacity: 0;
  transform: translateY(-4px) scale(0.98);
}

.toast-body {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  font-weight: 600;
  line-height: 1.35;
}

.toast-title {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-base);
}

.toast-caption {
  font-weight: 500;
  font-size: 0.78rem;
  color: var(--color-muted);
}

.toast-dismiss {
  flex: 0 0 auto;
  align-self: center;
  display: inline-grid;
  place-items: center;
  width: 1.5rem;
  height: 1.5rem;
  padding: 0;
  margin: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--color-muted);
  cursor: pointer;
  transition: background 120ms var(--ease), color 120ms var(--ease);
}

.toast-dismiss:hover {
  background: var(--hover-bg);
  color: var(--color-base);
}

.toast-error {
  border-color: color-mix(in srgb, var(--color-accent) 45%, transparent);
  color: var(--color-accent);
}

.toast-error .toast-title { color: var(--color-accent); }

.account { position: relative; }
.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  margin-left: 0.3rem;
  border: none;
  border-radius: 50%;
  background: linear-gradient(135deg, hsl(354 85% 48%) 0%, hsl(354 90% 58%) 30%, hsl(0 80% 65%) 55%, hsl(0 85% 65%) 100%);
  color: white;
  font-family: var(--main-font), sans-serif;
  font-weight: 700;
  font-size: 0.82rem;
  cursor: pointer;
}
.avatar-initial { line-height: 1; }

.account-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  min-width: 16rem;
  padding: 0.35rem;
  background: var(--color-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--card-shadow-hover);
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}
.account-menu[hidden] { display: none; }

.account-row {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  width: 100%;
  padding: 0.55rem 0.6rem;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-base);
  font-family: var(--main-font), sans-serif;
  font-size: 0.9rem;
  text-align: left;
  cursor: pointer;
}
.account-row.account-identity { cursor: default; background: var(--active-bg); }

.account-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.85rem;
  height: 1.85rem;
  border-radius: 50%;
  background: linear-gradient(135deg, hsl(354 85% 48%) 0%, hsl(354 90% 58%) 30%, hsl(0 80% 65%) 55%, hsl(0 85% 65%) 100%);
  color: white;
  font-weight: 700;
  font-size: 0.78rem;
  flex-shrink: 0;
}

.account-meta { display: flex; flex-direction: column; flex: 1; min-width: 0; line-height: 1.2; }
.account-name { font-weight: 600; color: var(--color-base); }
.account-role { font-size: 0.76rem; color: var(--color-muted); margin-top: 0.1rem; }
.account-divider { height: 1px; background: var(--color-border); margin: 0.3rem 0.1rem; }
.account-signout { color: var(--color-muted); }
.account-signout-icon { margin-left: 0.25rem; margin-right: 0.35rem; flex-shrink: 0; }

@media (hover: hover) and (pointer: fine) {
  .account-row:hover { background: var(--hover-bg); }
  .account-row.account-identity:hover { background: var(--active-bg); }
  .account-signout:hover { color: var(--color-base); }
}

@media (max-width: 960px) {
  .main-wrap {
    grid-template-columns: 1fr;
    grid-template-rows: none;
    grid-auto-rows: minmax(9rem, auto);
    max-height: none;
    padding: 1.25rem;
  }

  .card-wide,
  .card-full { grid-column: 1; }
}