:root {
  color-scheme: dark;
  --d-primary: #eceff2;
  --d-secondary: #202326;
  --d-tertiary: #32b889;
  --d-header_background: #272b2f;
  --d-header_primary: #f7f8f9;
  --d-danger: #f07178;
  --d-success: #32b889;
  --d-highlight: #e8bf68;
  --d-primary-medium: #a5adb5;
  --d-primary-low: #3a4148;
  --d-primary-very-low: #2b3035;

  --bg: var(--d-secondary);
  --surface: var(--d-header_background);
  --surface-muted: color-mix(in srgb, var(--d-secondary) 78%, var(--d-primary));
  --ink: var(--d-primary);
  --muted: var(--d-primary-medium);
  --line: var(--d-primary-low);
  --accent: var(--d-tertiary);
  --accent-ink: var(--d-secondary);
  --danger: var(--d-danger);
  --radius: 12px;
  --font: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  accent-color: var(--accent);
  scrollbar-color: var(--line) var(--bg);
}

* {
  box-sizing: border-box;
}

html,
body,
#app {
  min-height: 100%;
}

html,
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

#app {
  min-height: 100dvh;
}

.boot,
.centered {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: clamp(1rem, 3vw, 2rem);
  background: var(--bg);
}

.access-shell {
  min-height: 100dvh;
  display: grid;
  place-items: start center;
  padding: clamp(1.25rem, 5vh, 3.5rem) 1rem 2rem;
  background: var(--bg);
}

.access-panel {
  width: min(34rem, 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: clamp(1.25rem, 3vw, 1.75rem);
  box-shadow: 0 10px 24px color-mix(in srgb, var(--d-secondary) 40%, transparent);
}

.access-heading {
  display: grid;
  gap: 0.45rem;
}

.access-heading h1 {
  margin: 0;
  color: var(--d-header_primary);
  font-size: clamp(1.25rem, 2.5vw, 1.55rem);
  letter-spacing: -0.02em;
}

.access-heading p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.card {
  width: min(32rem, 100%);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 20px 48px color-mix(in srgb, var(--d-secondary) 72%, transparent);
  padding: clamp(1.25rem, 4vw, 2rem);
  text-align: left;
}

.card h1,
.card h2 {
  margin: 0;
  color: var(--d-header_primary);
  font-size: clamp(1.25rem, 2vw, 1.55rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.card p,
.hint {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.hint {
  font-size: 0.875rem;
}

.stack {
  display: grid;
  gap: 1rem;
}

.row {
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
  align-items: center;
}

.btn {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  border-radius: 8px;
  padding: 0.65rem 0.9rem;
  font-weight: 650;
  line-height: 1.2;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.btn-block {
  width: 100%;
  min-height: 2.75rem;
}

.btn:hover:not(:disabled) {
  background: var(--surface-muted);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
}

.btn:active:not(:disabled) {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

.btn-primary:hover:not(:disabled) {
  background: color-mix(in srgb, var(--accent) 88%, var(--d-primary));
  border-color: var(--accent);
}

.btn-secondary {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.btn-quiet {
  border-color: transparent;
  background: transparent;
  color: var(--muted);
  padding-inline: 0.35rem;
}

.btn-quiet:hover:not(:disabled) {
  background: transparent;
  border-color: transparent;
  color: var(--ink);
}

.btn-danger {
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger) 52%, var(--line));
}

.btn-danger:hover:not(:disabled) {
  background: color-mix(in srgb, var(--danger) 12%, var(--surface));
  border-color: var(--danger);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

input[type="text"],
input[type="search"],
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.75rem 0.8rem;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.45;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

input[type="text"]::placeholder,
input[type="search"]::placeholder,
textarea::placeholder {
  color: color-mix(in srgb, var(--muted) 82%, transparent);
}

input[type="text"]:focus,
input[type="search"]:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
  outline: 0;
}

textarea {
  min-height: 7rem;
  resize: vertical;
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field label {
  color: var(--ink);
  font-size: 0.875rem;
  font-weight: 650;
}

.field-help {
  margin: 0;
  color: var(--muted);
  font-size: 0.8125rem;
  line-height: 1.4;
}

.recipient-picker {
  position: relative;
}

.recipient-suggestions {
  position: absolute;
  z-index: 2;
  top: calc(100% - 1.55rem);
  right: 0;
  left: 0;
  max-height: 12rem;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 12px 28px color-mix(in srgb, var(--d-secondary) 62%, transparent);
}

.recipient-option {
  display: block;
  width: 100%;
  min-height: 2.5rem;
  padding: 0.65rem 0.75rem;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  font: inherit;
  text-align: left;
}

.recipient-option:last-child {
  border-bottom: 0;
}

.recipient-option:hover,
.recipient-option:focus-visible {
  background: color-mix(in srgb, var(--accent) 12%, var(--surface));
}

.recipient-suggestions__empty {
  margin: 0;
  padding: 0.75rem;
  color: var(--muted);
  font-size: 0.875rem;
  line-height: 1.4;
}

.check-row {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  color: var(--ink);
  line-height: 1.4;
  cursor: pointer;
}

.check-row input {
  margin: 0.15rem 0 0;
}

.paper-key {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1rem;
  color: var(--d-header_primary);
  line-height: 1.75;
  word-break: break-word;
  user-select: all;
}

.recovery-panel {
  display: grid;
  gap: 0.6rem;
  padding: 0.9rem;
  border: 1px solid color-mix(in srgb, var(--danger) 35%, var(--line));
  border-radius: 8px;
  background: color-mix(in srgb, var(--danger) 7%, var(--surface));
}

.recovery-panel strong {
  color: var(--ink);
}

.recovery-panel p {
  margin: 0;
  color: var(--muted);
  font-size: 0.875rem;
  line-height: 1.45;
}

.layout {
  display: grid;
  grid-template-columns: minmax(228px, 272px) minmax(0, 1fr);
  min-height: 100dvh;
  background: var(--bg);
}

@media (max-width: 800px) {
  .layout {
    grid-template-columns: 1fr;
    min-height: 100dvh;
  }

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    max-height: 44dvh;
  }
}

.sidebar {
  border-right: 1px solid var(--line);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.sidebar-header {
  padding: 1rem;
  border-bottom: 1px solid var(--line);
}

.sidebar-header h1 {
  margin: 0;
  color: var(--d-header_primary);
  font-size: 1.05rem;
  letter-spacing: -0.015em;
}

.sidebar-header .meta {
  color: var(--muted);
  font-size: 0.8rem;
  margin-top: 0.35rem;
}

.sidebar-actions {
  padding: 0.75rem;
  display: grid;
  gap: 0.6rem;
  border-bottom: 1px solid var(--line);
}

.btn-compose {
  width: 100%;
  min-height: 2.65rem;
  text-align: center;
}

.sidebar-utility-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.sidebar-utility-row .btn {
  min-width: 0;
  min-height: 2.35rem;
  padding-inline: 0.45rem;
  font-size: 0.825rem;
  text-align: center;
}

.sidebar-account-actions {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  padding-top: 0.15rem;
}

.sidebar-account-actions .btn {
  min-height: 2rem;
  font-size: 0.8rem;
}

.thread-list {
  overflow: auto;
  flex: 1;
  padding: 0.45rem;
  scrollbar-gutter: stable;
  overscroll-behavior: contain;
}

.thread-item {
  width: 100%;
  text-align: left;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  padding: 0.8rem 0.75rem;
  color: inherit;
  transition: background-color 160ms ease, border-color 160ms ease;
}

.thread-item.active,
.thread-item:hover {
  background: color-mix(in srgb, var(--accent) 12%, var(--surface));
  border-color: color-mix(in srgb, var(--accent) 28%, var(--line));
}

.thread-item .title {
  font-weight: 600;
  margin-bottom: 0.2rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.unread-dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--accent);
  flex: 0 0 auto;
}

.thread-item .preview {
  color: var(--muted);
  font-size: 0.85rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.main {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  background: var(--bg);
  container: main / inline-size;
}

.main-empty {
  margin: auto;
  color: var(--muted);
  padding: 2rem 1.25rem;
  text-align: center;
  max-width: 28rem;
  line-height: 1.5;
}

.thread-header {
  padding: 1.15rem 1.35rem;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.thread-header h2 {
  margin: 0 0 0.25rem;
  color: var(--d-header_primary);
  font-size: 1.15rem;
  letter-spacing: -0.015em;
}

.thread-header .members {
  color: var(--muted);
  font-size: 0.85rem;
}

.messages {
  flex: 1;
  overflow: auto;
  padding: 1.25rem clamp(1rem, 3vw, 2rem);
  display: grid;
  gap: 0.75rem;
  align-content: start;
  scrollbar-gutter: stable;
  overscroll-behavior: contain;
}

.message {
  max-width: min(42rem, 100%);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.8rem 0.9rem;
}

.message.mine {
  justify-self: end;
  background: color-mix(in srgb, var(--accent) 15%, var(--surface));
  border-color: color-mix(in srgb, var(--accent) 34%, var(--line));
}

.message .meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.78rem;
  margin-bottom: 0.35rem;
}

.message .body {
  white-space: pre-wrap;
  line-height: 1.45;
}

.composer {
  border-top: 1px solid var(--line);
  padding: 0.9rem clamp(1rem, 3vw, 2rem);
  display: grid;
  gap: 0.65rem;
  background: var(--surface);
}

.composer textarea {
  min-height: 4.25rem;
}

@container main (inline-size < 560px) {
  .messages,
  .composer,
  .thread-header {
    padding-inline: 1rem;
  }

  .message {
    max-width: 100%;
  }
}

.error {
  color: var(--danger);
  font-size: 0.9rem;
  line-height: 1.45;
}

.banner {
  background: color-mix(in srgb, var(--d-highlight) 14%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--d-highlight) 42%, var(--line));
  color: var(--ink);
  border-radius: 8px;
  padding: 0.8rem 0.9rem;
  font-size: 0.9rem;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: color-mix(in srgb, var(--d-secondary) 72%, transparent);
  display: grid;
  place-items: center;
  padding: 1.25rem;
  z-index: 10;
}

.modal {
  width: min(32rem, 100%);
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: 0 24px 60px color-mix(in srgb, var(--d-secondary) 78%, transparent);
  padding: clamp(1.25rem, 4vw, 1.75rem);
}

.modal h2 {
  margin: 0 0 0.5rem;
}

.modal p {
  color: var(--muted);
  margin: 0 0 1rem;
}

.qr-wrap {
  display: grid;
  place-items: center;
  padding: 0.5rem 0;
}

.qr-image {
  width: min(280px, 100%);
  height: auto;
  border-radius: 8px;
  background: #fff;
  padding: 0.65rem;
  border: 1px solid var(--line);
}

.muted {
  color: var(--muted);
}

.divider {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 0.35rem 0;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0ms !important;
  }
}