:root {
  color-scheme: light;
  --ink: #111715;
  --ink-soft: #3f4946;
  --paper: #f3f5f4;
  --sheet: #ffffff;
  --steel: #d8dfdc;
  --steel-dark: #a7b2ae;
  --signal: #ff5a1f;
  --danger: #9d2d20;
  --ok: #16754a;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --serif: "Segoe UI", Arial, sans-serif;
  --shadow: 0 10px 30px rgba(17, 23, 21, .08);
}

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--paper); }
body { margin: 0; min-height: 100vh; color: var(--ink); background: var(--paper); font-family: "Segoe UI", Arial, sans-serif; font-size: 16px; line-height: 1.5; }
button, input, textarea { font: inherit; }
button { min-height: 44px; cursor: pointer; }
button:disabled { cursor: wait; opacity: .55; }
button:focus-visible, input:focus-visible, textarea:focus-visible, summary:focus-visible { outline: 3px solid rgba(255, 90, 31, .35); outline-offset: 3px; }
[hidden] { display: none !important; }

.masthead { min-height: 62px; padding: 10px max(20px, calc((100vw - 1120px) / 2)); display: grid; grid-template-columns: auto 1fr auto; gap: 28px; align-items: center; border-bottom: 1px solid var(--steel); background: rgba(243,245,244,.96); }
.wordmark { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-family: var(--mono); letter-spacing: .02em; }
.wordmark span { width: 32px; height: 32px; display: grid; place-items: center; border-radius: 3px; background: var(--ink); color: var(--signal); font-weight: 700; }
.service-links { display: flex; justify-content: center; gap: 18px; font: 12px var(--mono); }
.service-links a { color: var(--ink-soft); text-underline-offset: 3px; }
.service-links a:hover { color: var(--ink); }
.connection { display: flex; align-items: center; gap: 7px; color: var(--ink-soft); font: 11px var(--mono); text-transform: uppercase; letter-spacing: .06em; }
.connection i { width: 8px; height: 8px; border-radius: 50%; background: var(--steel-dark); }
.connection.is-online i { background: var(--ok); }
.connection.is-offline i { background: var(--danger); }

main { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 14px; font-size: clamp(34px, 4.2vw, 46px); line-height: 1.08; font-weight: 650; letter-spacing: -.03em; }
h2 { font-size: 25px; line-height: 1.1; font-weight: 500; }
.eyebrow, label, .search-field span { display: block; margin-bottom: 8px; color: var(--ink-soft); font: 10px var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.lede { max-width: 620px; color: var(--ink-soft); font-size: clamp(17px, 2vw, 21px); line-height: 1.45; }
.plain-promise { font: 12px var(--mono); color: var(--ink-soft); }

.setup-view { min-height: 560px; padding: clamp(54px, 9vh, 88px) 0; display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(290px, .65fr); gap: 56px; align-items: center; }
.setup-copy { max-width: 690px; }
.setup-actions { padding: 24px; border: 1px solid var(--steel-dark); border-top: 3px solid var(--signal); background: var(--sheet); box-shadow: var(--shadow); }
.setup-actions button { width: 100%; margin-bottom: 10px; }
.setup-actions p { margin: 8px 0 0; color: var(--ink-soft); font-size: 14px; }
.primary, .secondary, .danger, .head-actions button, .copy-line button, .back-link { padding: 0 18px; border: 1px solid var(--ink); border-radius: 3px; background: var(--ink); color: #fff; font: 12px var(--mono); }
.primary:hover { background: #28312e; }
.secondary, .head-actions button, .copy-line button, .back-link { background: transparent; color: var(--ink); border-color: var(--steel-dark); }
.secondary:hover, .head-actions button:hover, .copy-line button:hover { border-color: var(--ink); background: #e9eeec; }
.danger { background: transparent; color: var(--danger); border-color: #d9a59e; }

.pair-view, .pair-device-view { padding: 44px 0 70px; }
.back-link { margin-bottom: 26px; padding-inline: 0; border: 0; }
.pairing-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(310px, .85fr); gap: 55px; align-items: center; }
.pairing-grid h1, .pair-device-view h1 { max-width: 650px; font-size: clamp(32px, 4vw, 44px); }
.pairing-grid > div:first-child > p:not(.eyebrow) { max-width: 610px; color: var(--ink-soft); }
.pairing-qr { width: min(330px, 100%); aspect-ratio: 1; margin-top: 24px; padding: 14px; display: grid; place-items: center; border: 1px solid var(--steel-dark); background: #fff; }
.pairing-qr svg { display: block; width: 100%; height: 100%; }
.pairing-details { padding: 25px; border-left: 4px solid var(--signal); background: var(--sheet); box-shadow: var(--shadow); }
.copy-line { display: grid; grid-template-columns: 1fr auto; }
.copy-line input { min-width: 0; border-radius: 3px 0 0 3px; }
.copy-line button { border-left: 0; border-radius: 0 3px 3px 0; }
.micro { margin: 22px 0 8px; color: var(--ink-soft); font-size: 14px; }
.safety-words { display: block; margin-bottom: 22px; color: var(--signal); font: 22px var(--mono); }
.pairing-details .primary { width: 100%; }
.narrow-sheet { max-width: 620px; margin: 20px auto; padding: 30px; border: 1px solid var(--steel-dark); background: var(--sheet); box-shadow: var(--shadow); }
.narrow-sheet textarea { margin-bottom: 16px; }
.recovery-divider { margin: 25px 0 15px; display: flex; align-items: center; gap: 10px; color: var(--ink-soft); font: 10px var(--mono); text-transform: uppercase; }
.recovery-divider::before, .recovery-divider::after { content: ""; height: 1px; flex: 1; background: var(--steel); }
#recovery-file { position: absolute; width: 1px; height: 1px; opacity: 0; }
#restore-recovery { width: 100%; margin-top: 10px; }

.inbox-view { padding: 38px 0 100px; }
.inbox-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; }
.inbox-head h1 { margin: 0; font-size: 48px; }
.head-actions { display: flex; gap: 8px; }
.inbox-tools { margin: 32px 0 8px; padding: 15px; display: grid; grid-template-columns: 1fr 230px; gap: 24px; align-items: end; border-block: 1px solid var(--steel); }
input, textarea { width: 100%; padding: 11px 12px; border: 1px solid var(--steel-dark); border-radius: 3px; background: var(--sheet); color: var(--ink); }
textarea { resize: vertical; line-height: 1.5; }
.search-field { margin: 0; }
.search-field input { height: 44px; }
.storage-block { display: grid; gap: 7px; color: var(--ink-soft); font: 11px var(--mono); }
progress { width: 100%; height: 7px; accent-color: var(--signal); }
.sync-note { min-height: 22px; margin: 12px 0; color: var(--ink-soft); font: 12px var(--mono); }
.inbox-stream { border-top: 1px solid var(--ink); }
.inbox-item { display: grid; grid-template-columns: 104px minmax(0, 1fr) auto; gap: 18px; padding: 18px 5px; border-bottom: 1px solid var(--steel); animation: arrive 240ms ease both; }
.item-kind { color: var(--signal); font: 10px var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.item-time { display: block; margin-top: 6px; color: var(--ink-soft); font: 10px var(--mono); }
.item-main { min-width: 0; }
.item-main strong { display: block; margin-bottom: 5px; font-weight: 500; overflow-wrap: anywhere; }
.item-main p { margin: 0; color: var(--ink-soft); white-space: pre-wrap; overflow-wrap: anywhere; }
.item-meta { margin-top: 7px; color: var(--ink-soft); font: 10px var(--mono); }
.item-actions { display: flex; align-items: center; gap: 5px; }
.item-actions button, .item-actions a { min-height: 40px; padding: 0 11px; display: inline-grid; place-items: center; border: 1px solid var(--steel); border-radius: 3px; background: transparent; color: var(--ink); font: 11px var(--mono); text-decoration: none; }
.item-actions .delete { color: var(--danger); }
.empty-inbox { padding: 70px 20px; text-align: center; border-bottom: 1px solid var(--steel); }
.empty-inbox > span { display: grid; place-items: center; width: 48px; height: 48px; margin: 0 auto 14px; border: 1px solid var(--steel-dark); border-radius: 50%; color: var(--signal); font-size: 25px; }
.empty-inbox h2 { margin-bottom: 7px; }
.empty-inbox p { color: var(--ink-soft); }
.compose-button { position: fixed; right: max(22px, calc((100vw - 1120px) / 2)); bottom: 24px; z-index: 4; min-height: 50px; padding: 0 20px; border: 1px solid #c93d0c; border-radius: 3px; background: var(--signal); color: #fff; box-shadow: 0 8px 22px rgba(255,90,31,.22); font: 13px var(--mono); }
.compose-button span { margin-right: 7px; font-size: 20px; }

dialog { width: min(620px, calc(100% - 28px)); max-height: calc(100vh - 28px); padding: 0; border: 0; border-radius: 4px; background: var(--sheet); color: var(--ink); box-shadow: 0 24px 80px rgba(10,15,13,.25); }
.composer-sheet { overflow: auto; }
dialog::backdrop { background: rgba(17,23,21,.7); }
dialog form { padding: 26px; }
.sheet-head { display: flex; justify-content: space-between; gap: 20px; }
.sheet-head h2 { margin-bottom: 20px; }
.icon-button { width: 44px; padding: 0; border: 0; border-radius: 50%; background: transparent; color: var(--ink); font-size: 25px; }
.or-line { margin: 18px 0; display: flex; align-items: center; gap: 10px; color: var(--ink-soft); font: 10px var(--mono); text-transform: uppercase; }
.or-line::before, .or-line::after { content: ""; height: 1px; flex: 1; background: var(--steel); }
.file-picker { min-height: 62px; padding: 10px 13px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border: 1px dashed var(--steel-dark); border-radius: 3px; color: var(--ink); cursor: pointer; }
.file-picker small { color: var(--ink-soft); font: 10px var(--mono); }
#item-file { position: absolute; width: 1px; height: 1px; opacity: 0; }
.chosen-file, .expiry-copy { margin: 7px 0 16px; color: var(--ink-soft); font-size: 13px; }
.check-line { min-height: 44px; display: flex; align-items: center; gap: 10px; color: var(--ink); font: 14px var(--serif); text-transform: none; letter-spacing: 0; }
.check-line input { width: 18px; height: 18px; accent-color: var(--signal); }
.sheet-actions { display: flex; justify-content: flex-end; gap: 9px; margin-top: 20px; }
.settings-sheet input { margin-bottom: 10px; }
.settings-sheet hr { margin: 24px 0; border: 0; border-top: 1px solid var(--steel); }
.settings-sheet .secondary, .settings-sheet .danger { margin: 5px 5px 5px 0; }
.settings-sheet details { margin-top: 19px; color: var(--ink-soft); font-size: 14px; }
.settings-sheet summary { min-height: 44px; display: flex; align-items: center; cursor: pointer; font-family: var(--mono); font-size: 11px; }
.toast { position: fixed; left: 50%; bottom: 24px; z-index: 20; transform: translateX(-50%); max-width: min(500px, calc(100% - 30px)); padding: 12px 16px; border-radius: 3px; background: var(--ink); color: #fff; font: 12px/1.45 var(--mono); box-shadow: var(--shadow); }
.toast.is-error { background: var(--danger); }
.service-footer { width: min(1120px, calc(100% - 40px)); margin: 0 auto; padding: 18px 0 28px; border-top: 1px solid var(--steel); color: var(--ink-soft); font: 11px/1.5 var(--mono); }
.service-footer p { margin: 0; }
.service-footer a { color: var(--ink); text-underline-offset: 3px; }

@keyframes arrive { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: none; } }

@media (max-width: 800px) {
  .setup-view { grid-template-columns: 1fr; gap: 35px; align-content: center; }
  .setup-actions { max-width: 520px; }
  .pairing-grid { grid-template-columns: 1fr 1fr; gap: 25px; }
  .inbox-item { grid-template-columns: 86px minmax(0, 1fr); }
  .item-actions { grid-column: 2; }
}

@media (max-width: 640px) {
  .masthead { padding-inline: 15px; grid-template-columns: 1fr auto; gap: 8px 16px; }
  .service-links { grid-column: 1 / -1; grid-row: 2; justify-content: flex-start; }
  main { width: min(100% - 28px, 1120px); }
  h1 { font-size: 39px; }
  .setup-view { min-height: 0; padding: 42px 0; }
  .setup-actions { padding: 20px; }
  .pair-view, .pair-device-view, .inbox-view { padding-top: 24px; }
  .pairing-grid { grid-template-columns: 1fr; }
  .pairing-qr { width: 270px; margin-inline: auto; }
  .pairing-details { padding: 20px; }
  .inbox-head { align-items: flex-start; }
  .inbox-head h1 { font-size: 38px; }
  .head-actions { display: grid; }
  .head-actions button { min-height: 40px; padding-inline: 12px; }
  .inbox-tools { grid-template-columns: 1fr; gap: 14px; margin-top: 23px; }
  .inbox-item { grid-template-columns: 1fr; gap: 7px; padding: 16px 2px; }
  .item-time { display: inline; margin-left: 8px; }
  .item-actions { grid-column: 1; flex-wrap: wrap; margin-top: 5px; }
  .compose-button { right: 15px; bottom: 15px; }
  dialog form { padding: 20px; }
  .file-picker { align-items: flex-start; flex-direction: column; gap: 3px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}