.extension-shell {
  width: min(100%, 390px);
  height: 690px;
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 9px;
  background: #363636;
  box-shadow: 0 28px 60px rgba(0,0,0,0.32);
  color: #1f2933;
  font-family: Arial, Helvetica, sans-serif;
  text-align: left;
}

.extension-topbar {
  height: 42px;
  padding: 0 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #393939;
  color: #f5f5f5;
}

.extension-brand,
.extension-window-actions,
.extension-day-title,
.extension-rail-item {
  display: flex;
  align-items: center;
}

.extension-brand { gap: 8px; }
.extension-brand strong { font-size: 14px; }
.extension-mark {
  width: 18px;
  height: 18px;
  display: grid;
  place-items: center;
  border-radius: 3px;
  background: #071e1d;
  color: #f3fffb;
  font-size: 8px;
  font-weight: 700;
  letter-spacing: -2px;
}
.extension-mark span { color: #1dd09b; }
.extension-window-actions { gap: 20px; color: #cfcfcf; font-size: 20px; }
.extension-window-actions span:first-child { font-size: 19px; transform: rotate(45deg); }

.extension-workspace {
  height: calc(100% - 42px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) 68px;
  background: #f2f5f4;
}

.extension-main {
  min-width: 0;
  padding: 10px 8px 18px 10px;
  border-right: 2px solid #0bc98f;
  overflow: hidden;
}

.extension-day-card {
  padding: 12px;
  border: 1px solid #d4dce1;
  border-radius: 8px;
  background: white;
}

.extension-day-title { gap: 10px; }
.extension-day-title > div { display: grid; gap: 2px; }
.extension-day-title small { color: #0aa876; font-size: 10px; font-weight: 700; letter-spacing: 0.7px; }
.extension-day-title strong { font-size: 17px; }
.extension-calendar {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: #d9fbef;
  color: #08b57f;
  position: relative;
  font-size: 0;
}
.extension-calendar::before {
  content: "";
  width: 16px;
  height: 15px;
  border: 2px solid currentColor;
  border-radius: 3px;
  box-shadow: inset 0 4px 0 rgba(8,181,127,0.18);
}
.extension-calendar::after {
  content: "";
  position: absolute;
  top: 7px;
  left: 10px;
  width: 3px;
  height: 3px;
  background: currentColor;
  box-shadow: 6px 0 currentColor, 0 6px currentColor, 6px 6px currentColor;
}

.extension-greeting {
  margin: 14px 0 10px;
  padding: 12px;
  display: grid;
  gap: 7px;
  border: 1px solid #2ce2a7;
  border-radius: 8px;
  background: #e9fff7;
}
.extension-greeting strong { font-size: 14px; }
.extension-greeting span { color: #74818d; font-size: 11px; line-height: 1.35; }
.extension-greeting b {
  padding: 8px;
  border: 1px solid #80e5c3;
  border-radius: 7px;
  background: white;
  color: #202a31;
  font-size: 10px;
}

.extension-section { margin-top: 9px; }
.extension-section h3 {
  display: flex;
  align-items: center;
  gap: 7px;
  color: #222b31;
  font-size: 13px;
  font-weight: 700;
}
.extension-section h3 span { color: #00b87f; font-size: 17px; }
.extension-section > p { margin: 4px 0 0 22px; color: #7c8994; font-size: 10px; }

.extension-item {
  min-height: 58px;
  margin-top: 6px;
  padding: 9px 9px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  border: 1px solid #d5dde2;
  border-radius: 7px;
  background: #fbfcfc;
}
.extension-item > div { min-width: 0; display: grid; gap: 2px; }
.extension-item strong { overflow: hidden; color: #232c32; font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.extension-item span,
.extension-item small { color: #7a8792; font-size: 10px; }
.extension-item a { flex: 0 0 auto; color: #05ad78; font-size: 10px; font-weight: 700; }

.extension-rail {
  min-width: 0;
  padding: 10px 6px 8px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  background: #092a28;
  color: #e8eeee;
}
.extension-rail-item {
  min-height: 70px;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  border-radius: 8px;
  text-align: center;
}
.extension-rail-item span {
  width: 20px;
  height: 22px;
  position: relative;
  border: 2px solid currentColor;
  border-radius: 2px;
  font-size: 0;
}
.extension-rail-item span::before {
  content: "";
  position: absolute;
  top: 4px;
  left: 4px;
  width: 2px;
  height: 2px;
  background: currentColor;
  box-shadow: 5px 0 currentColor, 10px 0 currentColor, 0 5px currentColor, 5px 5px currentColor, 10px 5px currentColor, 5px 10px currentColor;
}
.extension-rail-item strong { font-size: 13px; line-height: 1.12; }
.extension-rail-item.active {
  border-left: 3px solid #12e1a0;
  background: #087c5e;
  color: #36efb6;
}
.extension-settings {
  width: 52px;
  height: 64px;
  margin-top: auto;
  display: grid;
  place-items: center;
  border: 1px solid #058b6a;
  border-radius: 8px;
  background: #10443e;
  color: white;
  font-size: 25px;
}

.extension-shell--compact { height: 570px; }
.extension-shell--compact .extension-day-card { padding: 10px; }
.extension-shell--compact .extension-section { margin-top: 7px; }
.extension-shell--compact .extension-item { min-height: 50px; padding: 7px 8px; }
.extension-shell--compact .extension-rail-item { min-height: 60px; }

@media (max-width: 420px) {
  .extension-shell { height: 650px; }
  .extension-workspace { grid-template-columns: minmax(0, 1fr) 64px; }
  .extension-main { padding-left: 7px; }
  .extension-day-card { padding: 10px; }
  .extension-rail { padding-inline: 5px; }
  .extension-settings { width: 100%; }
}