:root {
  color-scheme: dark;
  --loop-bg: #1b1b1b;
  --loop-soft: #272727;
  --loop-line: #505050;
  --loop-ink: #eee;
  --loop-muted: #b8bcbc;
  --loop-solid: #e6e8e8;
  --loop-inverse: #222;
  --loop-danger: #ffa8a2;
  font-family: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.5;
  letter-spacing: 0;
  background: var(--loop-bg);
  color: var(--loop-ink);
}

* {
  box-sizing: border-box;
  letter-spacing: 0;
}

[hidden] {
  display: none !important;
}

body.loop-app {
  min-width: 0;
  min-height: 100vh;
  min-height: 100svh;
  margin: 0;
  background: var(--loop-bg);
  color: var(--loop-ink);
}

body.loop-app :is(main, section, form, fieldset, label) {
  min-width: 0;
}

button,
input,
select,
textarea {
  color: inherit;
  font: inherit;
}

/* Keep editable text large enough to avoid iOS focus zoom. */
body.loop-app :is(input, select, textarea) {
  font-size: 16px;
}

button,
a,
input,
select,
textarea,
summary {
  touch-action: manipulation;
}

button {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 6px 10px;
  border: 1px solid var(--loop-line);
  border-radius: 3px;
  background: var(--loop-bg);
  color: var(--loop-ink);
  cursor: pointer;
  white-space: nowrap;
}

button:hover {
  background: var(--loop-soft);
}

button:disabled {
  cursor: default;
  opacity: .45;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible,
[tabindex="0"]:focus-visible {
  outline: 2px solid var(--loop-solid);
  outline-offset: 2px;
}

button svg,
a svg,
summary svg {
  width: 16px;
  height: 16px;
  flex: none;
}

.loop-primary {
  border-color: var(--loop-solid);
  background: var(--loop-solid);
  color: var(--loop-inverse);
}

.loop-primary:hover {
  background: var(--loop-solid);
}

.loop-icon-button {
  width: 34px;
  height: 34px;
  flex: none;
  padding: 7px;
}

.loop-muted {
  color: var(--loop-muted);
  font-size: 12px;
}

.loop-mono {
  font: 12px ui-monospace, SFMono-Regular, Consolas, monospace;
  overflow-wrap: anywhere;
}

.loop-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.loop-topbar {
  display: flex;
  min-height: 63px;
  align-items: center;
  gap: 18px;
  padding: 13px 20px;
  border-bottom: 1px solid var(--loop-line);
  background: var(--loop-bg);
}

.loop-brand {
  color: var(--loop-ink);
  font-size: 23px;
  font-weight: 650;
  line-height: 1.35;
  text-decoration: none;
}

.loop-workspace-label,
.loop-identity {
  color: var(--loop-muted);
  font-size: 12px;
}

.loop-topbar-spacer {
  flex: 1;
}

.loop-identity {
  max-width: min(32vw, 320px);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.loop-logout {
  margin: 0;
}

.loop-logout button {
  min-height: 30px;
  padding: 4px 8px;
  border-color: transparent;
}

.loop-layout {
  display: grid;
  min-height: calc(100vh - 63px);
  min-height: calc(100svh - 63px);
  grid-template-columns: 136px minmax(0, 1fr);
}

.loop-sidebar {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 6px;
  padding: 20px 10px;
  border-right: 1px solid var(--loop-line);
}

.loop-nav-label {
  padding: 0 8px 5px;
  color: var(--loop-muted);
  font-size: 11px;
}

.loop-settings-label {
  margin-top: 26px;
}

.loop-nav-item {
  display: flex;
  min-height: 38px;
  align-items: center;
  justify-content: flex-start;
  gap: 6px;
  padding: 9px 8px;
  border: 0;
  border-radius: 3px;
  background: transparent;
  color: var(--loop-ink);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
}

.loop-nav-item:hover {
  background: var(--loop-soft);
}

.loop-nav-item[aria-current="page"] {
  background: var(--loop-soft);
  box-shadow: inset 2px 0 var(--loop-ink);
  font-weight: 600;
}

.loop-nav-footer {
  display: grid;
  gap: 8px;
  margin-top: auto;
  padding: 32px 8px 0;
  color: var(--loop-muted);
  font-size: 12px;
}

.loop-nav-footer button {
  justify-content: flex-start;
  padding: 6px 0;
  border: 0;
  color: var(--loop-muted);
  font-size: 12px;
  white-space: normal;
}

.loop-main {
  min-width: 0;
  padding: 22px;
}

.loop-dialog-head,
.loop-dialog-footer {
  display: flex;
  align-items: center;
  gap: 12px;
}

.loop-dialog-head {
  justify-content: space-between;
  margin-bottom: 20px;
}

.loop-dialog-head h2 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
}

.loop-dialog-body {
  min-width: 0;
}

.loop-dialog-footer {
  justify-content: flex-end;
  flex-wrap: wrap;
  margin-top: 18px;
}

.loop-toast {
  position: fixed;
  z-index: 100;
  right: 16px;
  bottom: 16px;
  left: 16px;
  padding: 12px 16px;
  border-radius: 3px;
  background: var(--loop-solid);
  color: var(--loop-inverse);
}

@media (max-width: 760px), (max-width: 1024px) and (pointer: coarse) {
  body.loop-app :is(button, summary) {
    min-height: 44px;
  }

  body.loop-app .loop-icon-button {
    width: 44px;
    height: 44px;
  }

  .loop-topbar {
    min-height: 64px;
    gap: 10px;
    padding: 10px max(12px, env(safe-area-inset-right)) 10px max(12px, env(safe-area-inset-left));
  }

  .loop-layout {
    display: block;
    min-height: calc(100vh - 64px);
    min-height: calc(100svh - 64px);
  }

  .loop-sidebar {
    position: sticky;
    top: 0;
    z-index: 30;
    align-self: start;
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 4px;
    padding: 6px max(8px, env(safe-area-inset-right)) 6px max(8px, env(safe-area-inset-left));
    border-right: 0;
    border-bottom: 1px solid var(--loop-line);
    background: var(--loop-bg);
  }

  .loop-nav-label,
  .loop-nav-footer {
    display: none;
  }

  .loop-nav-item {
    flex: 1 1 0;
    min-width: 0;
    min-height: 54px;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    padding: 6px 2px;
    font-size: 12px;
    text-align: center;
  }

  .loop-nav-item svg {
    width: 19px;
    height: 19px;
  }

  .loop-nav-item[aria-current="page"] {
    box-shadow: inset 0 -2px var(--loop-ink);
  }

  .loop-logout button {
    width: 44px;
    height: 44px;
    padding: 10px;
  }

  .loop-logout button span {
    display: none;
  }

  .loop-main {
    padding: 18px max(12px, env(safe-area-inset-right)) max(24px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
  }

  .loop-dialog-head {
    gap: 8px;
  }

  .loop-dialog-head h2 {
    min-width: 0;
    overflow-wrap: anywhere;
    line-height: 1.4;
  }

  .loop-dialog-footer {
    gap: 8px;
  }

  .loop-dialog-footer > button {
    min-width: 0;
    white-space: normal;
  }

  .loop-toast {
    right: max(12px, env(safe-area-inset-right));
    bottom: max(12px, env(safe-area-inset-bottom));
    left: max(12px, env(safe-area-inset-left));
    max-height: calc(100dvh - 24px);
    overflow: auto;
    overflow-wrap: anywhere;
  }
}

@media (max-width: 460px) {
  .loop-workspace-label {
    display: none;
  }

  .loop-identity {
    display: block;
    max-width: 120px;
  }

  .loop-topbar {
    gap: 8px;
  }
}