:root {
  color-scheme: light;
  --color-canvas: #cfcec6;
  --color-surface: #dedbd4;
  --color-surface-raised: #e6e2da;
  --color-surface-blue: #becdd7;
  --color-surface-sage: #d2d0aa;
  --color-surface-blush: #ddc0c4;
  --color-rose: #b97b86;
  --color-raspberry: #B97B86;
  --color-raspberry-hover: #C89199;
  --color-raspberry-active: #A96D7A;
  --color-raspberry-dark: #7A6166;
  --color-ink: #243139;
  --color-ink-muted: #536a78;
  --color-border: #aeb7b8;
  --color-backdrop: rgb(36 49 57 / 32%);
  --color-frame: #b9b8b1;
  --color-hover: rgb(230 227 220 / 72%);
  --color-nav: rgb(207 206 198 / 96%);
  --color-on-accent: #ffffff;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --radius-control: 12px;
  --radius-card: 16px;
  --shadow-shell: 0 24px 80px rgb(36 49 57 / 18%);
  --font-sans: "Onest Variable", "Onest", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --color-canvas: #252b2e;
  --color-surface: #30383b;
  --color-surface-raised: #374044;
  --color-surface-blue: #3c505a;
  --color-surface-sage: #4b4c3a;
  --color-surface-blush: #543f45;
  --color-rose: #b97b86;
  --color-raspberry: #B97B86;
  --color-raspberry-hover: #C89199;
  --color-raspberry-active: #A96D7A;
  --color-raspberry-dark: #7A6166;
  --color-ink: #ebe6dd;
  --color-ink-muted: #aebdc5;
  --color-border: #617178;
  --color-backdrop: rgb(8 12 14 / 58%);
  --color-frame: #171c1f;
  --color-hover: #3b4448;
  --color-nav: rgb(37 43 46 / 96%);
  --color-on-accent: #ffffff;
  --shadow-shell: 0 24px 80px rgb(8 12 14 / 42%);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--color-frame);
  color: var(--color-ink);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--color-frame);
  transition: background-color 180ms ease, color 180ms ease;
}

button {
  color: inherit;
  font: inherit;
}

button:focus-visible {
  outline: 3px solid var(--color-raspberry);
  outline-offset: 3px;
}

.prototype-stage {
  min-height: 100vh;
  min-height: 100dvh;
}

.app-shell {
  position: relative;
  display: flex;
  flex-direction: column;
  width: min(100%, 480px);
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0 auto;
  overflow: hidden;
  background: var(--color-canvas);
  box-shadow: var(--shadow-shell);
  transition: background-color 180ms ease;
}

.app-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: max(24px, env(safe-area-inset-top)) 20px 18px;
  border-bottom: 1px solid rgb(83 106 120 / 24%);
}

.wordmark {
  margin: 0;
  color: var(--color-ink);
  font-size: clamp(1.9rem, 8vw, 2.2rem);
  font-weight: 600;
  letter-spacing: -0.045em;
  line-height: 1;
}

.greeting {
  margin: 10px 0 0;
  color: var(--color-ink-muted);
  font-size: 0.92rem;
  line-height: 1.35;
}

.icon-button {
  display: inline-grid;
  width: 44px;
  height: 44px;
  padding: 0;
  place-items: center;
  border: 1px solid rgb(83 106 120 / 42%);
  border-radius: 50%;
  background: transparent;
  color: var(--color-ink-muted);
  cursor: pointer;
  transition: background-color 180ms ease, color 180ms ease, border-color 180ms ease;
}

.icon-button:hover {
  border-color: var(--color-ink-muted);
  background: var(--color-hover);
  color: var(--color-ink);
}

.screen-content {
  flex: 1;
  padding: 28px 20px 32px;
}

.mail-section,
.recent-section {
  margin: 0;
}

.recent-section {
  margin-top: 34px;
}

.section-heading {
  display: flex;
  min-height: 44px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.section-heading h2,
.screen-intro h2,
.preview-sheet h2 {
  margin: 0;
  color: var(--color-ink);
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.25;
}

.section-heading__count {
  display: inline-flex;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: flex-end;
  gap: 3px;
  color: var(--color-raspberry);
  font-size: 1.08rem;
  font-weight: 600;
}

.mail-stack {
  display: grid;
  gap: 12px;
}

.mail-card {
  position: relative;
  display: flex;
  min-height: 168px;
  align-items: center;
  justify-content: space-between;
  padding: 22px 20px;
  overflow: hidden;
  border: 1px solid rgb(83 106 120 / 18%);
  border-radius: var(--radius-card);
}

.mail-card--blush {
  background: var(--color-surface-blush);
}

.mail-card--sage {
  background: var(--color-surface-sage);
}

.mail-card--blue {
  background: var(--color-surface-blue);
}

.mail-card__direction {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--color-raspberry-dark);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  line-height: 1;
  text-transform: uppercase;
}

.mail-card h3 {
  margin: 17px 0 9px;
  color: var(--color-ink);
  font-size: 1.5rem;
  font-weight: 550;
  letter-spacing: -0.025em;
  line-height: 1.1;
}

.mail-card p,
.mail-card strong {
  display: block;
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.45;
}

.mail-card p {
  color: var(--color-ink-muted);
}

.mail-card strong {
  margin-top: 2px;
  color: var(--color-raspberry-dark);
  font-weight: 550;
}

.mail-card__chevron {
  flex: none;
  margin-left: 12px;
  color: var(--color-ink-muted);
}

.recent-card {
  display: grid;
  min-height: 92px;
  align-items: center;
  padding: 14px 16px;
  border: 1px solid rgb(83 106 120 / 25%);
  border-radius: var(--radius-card);
  background: var(--color-surface);
  grid-template-columns: 48px 1fr auto;
  gap: 14px;
}

.recent-card__icon,
.journal-row__icon {
  display: inline-grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border-radius: 50%;
  background: var(--color-surface-blue);
  color: var(--color-ink);
}

.recent-card h3,
.journal-row h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 550;
  line-height: 1.3;
}

.recent-card p,
.journal-row p {
  margin: 3px 0 0;
  color: var(--color-ink-muted);
  font-size: 0.86rem;
  line-height: 1.35;
}

.recent-card > svg {
  color: var(--color-ink-muted);
}

.offline-banner {
  display: grid;
  align-items: center;
  margin-bottom: 22px;
  padding: 14px 15px;
  border: 1px solid rgb(83 106 120 / 35%);
  border-radius: var(--radius-control);
  background: var(--color-surface-blue);
  grid-template-columns: 24px 1fr;
  gap: 11px;
  color: var(--color-ink);
}

.offline-banner span {
  display: grid;
  gap: 2px;
  font-size: 0.78rem;
  line-height: 1.35;
}

.offline-banner strong {
  font-size: 0.88rem;
  font-weight: 600;
}

.eyebrow {
  margin: 0 0 9px;
  color: var(--color-raspberry-dark);
  font-size: 0.74rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-transform: uppercase;
}

.empty-state {
  display: flex;
  min-height: 56vh;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 12px 6px 48px;
}

.empty-state__mark {
  display: grid;
  width: 64px;
  height: 64px;
  margin-bottom: 28px;
  place-items: center;
  border-radius: 50%;
  background: var(--color-surface-blue);
  color: var(--color-ink);
}

.empty-state h2 {
  max-width: 310px;
  margin: 0;
  font-size: clamp(1.7rem, 8vw, 2.2rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.08;
}

.empty-state > p:not(.eyebrow) {
  max-width: 330px;
  margin: 16px 0 24px;
  color: var(--color-ink-muted);
  font-size: 1rem;
  line-height: 1.55;
}

.screen-intro {
  margin-bottom: 26px;
}

.screen-intro h2 {
  font-size: clamp(1.9rem, 9vw, 2.5rem);
  letter-spacing: -0.045em;
}

.screen-intro > p:last-child {
  max-width: 350px;
  margin: 11px 0 0;
  color: var(--color-ink-muted);
  font-size: 0.94rem;
  line-height: 1.5;
}

.filter-row {
  display: flex;
  margin: 0 -20px 22px;
  padding: 0 20px 3px;
  overflow-x: auto;
  gap: 8px;
  scrollbar-width: none;
}

.filter-row::-webkit-scrollbar {
  display: none;
}

.filter-pill {
  min-height: 40px;
  flex: none;
  padding: 0 15px;
  border: 1px solid rgb(83 106 120 / 35%);
  border-radius: 999px;
  background: transparent;
  color: var(--color-ink-muted);
  cursor: pointer;
  font-size: 0.86rem;
}

.filter-pill--active {
  border-color: var(--color-ink);
  background: var(--color-ink);
  color: var(--color-canvas);
}

.journal-list {
  overflow: hidden;
  border: 1px solid rgb(83 106 120 / 25%);
  border-radius: var(--radius-card);
  background: var(--color-surface);
}

.journal-feedback {
  display: flex;
  min-height: 112px;
  align-items: center;
  justify-content: center;
  padding: 22px;
  border: 1px solid rgb(83 106 120 / 25%);
  border-radius: var(--radius-card);
  background: var(--color-surface);
  color: var(--color-ink-muted);
  gap: 11px;
  font-size: 0.9rem;
  text-align: center;
}

.journal-feedback__pulse {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  animation: journal-pulse 1.2s ease-in-out infinite;
  background: var(--color-rose);
}

.journal-feedback--error {
  display: grid;
  justify-items: center;
  background: var(--color-surface-blush);
}

.journal-feedback h3,
.journal-feedback p {
  margin: 0;
}

.journal-feedback h3 {
  color: var(--color-ink);
  font-size: 1rem;
}

.journal-feedback p {
  max-width: 300px;
  margin-top: 5px;
  line-height: 1.45;
}

.journal-feedback button {
  min-height: 40px;
  padding: 0 15px;
  border: 1px solid var(--color-raspberry);
  border-radius: var(--radius-control);
  background: transparent;
  color: var(--color-raspberry-dark);
  cursor: pointer;
  font-weight: 550;
}

.journal-row {
  display: grid;
  min-height: 84px;
  align-items: center;
  padding: 12px 14px;
  grid-template-columns: 44px 1fr auto;
  gap: 12px;
}

.journal-row + .journal-row {
  border-top: 1px solid rgb(83 106 120 / 22%);
}

.journal-row__icon {
  width: 40px;
  height: 40px;
}

.journal-row__icon--outgoing {
  background: var(--color-surface-blush);
  color: var(--color-raspberry-dark);
}

.journal-row time {
  align-self: start;
  padding-top: 3px;
  color: var(--color-ink-muted);
  font-size: 0.78rem;
}

@keyframes journal-pulse {
  50% {
    opacity: 0.35;
    transform: scale(0.78);
  }
}

@media (prefers-reduced-motion: reduce) {
  .journal-feedback__pulse {
    animation: none;
  }
}

.choice-stack {
  display: grid;
  gap: 12px;
}

.choice-card {
  display: grid;
  width: 100%;
  min-height: 132px;
  align-items: center;
  padding: 20px 18px;
  border: 1px solid rgb(83 106 120 / 22%);
  border-radius: var(--radius-card);
  cursor: pointer;
  grid-template-columns: 50px 1fr auto;
  gap: 14px;
  text-align: left;
}

.choice-card--send {
  background: var(--color-surface-blush);
}

.choice-card--receive {
  background: var(--color-surface-blue);
}

.choice-card__icon {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border: 1px solid rgb(36 49 57 / 26%);
  border-radius: 50%;
}

.choice-card span:nth-child(2) {
  display: grid;
  gap: 5px;
}

.choice-card strong {
  font-size: 1.06rem;
  font-weight: 600;
}

.choice-card small {
  color: var(--color-ink-muted);
  font-size: 0.82rem;
  line-height: 1.4;
}

.quiet-note {
  margin: 24px 2px 0;
  color: var(--color-ink-muted);
  font-size: 0.8rem;
  line-height: 1.5;
}

.bottom-nav {
  position: sticky;
  z-index: 10;
  bottom: 0;
  display: grid;
  min-height: calc(70px + env(safe-area-inset-bottom));
  margin-top: auto;
  padding: 8px 12px max(8px, env(safe-area-inset-bottom));
  border-top: 1px solid rgb(83 106 120 / 28%);
  background: var(--color-nav);
  grid-template-columns: repeat(3, 1fr);
  backdrop-filter: blur(14px);
}

.bottom-nav__item {
  display: flex;
  min-width: 0;
  min-height: 52px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3px;
  border: 0;
  border-radius: var(--radius-control);
  background: transparent;
  color: var(--color-ink-muted);
  cursor: pointer;
  gap: 4px;
  font-size: 0.74rem;
  line-height: 1;
}

.bottom-nav__item--active {
  color: var(--color-raspberry);
  font-weight: 600;
}

.sheet-backdrop {
  position: fixed;
  z-index: 30;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 12px;
  background: var(--color-backdrop);
  inset: 0;
}

.preview-sheet {
  width: min(100%, 456px);
  padding: 22px 20px max(20px, env(safe-area-inset-bottom));
  border: 1px solid rgb(83 106 120 / 34%);
  border-radius: 22px;
  background: var(--color-surface-raised);
  box-shadow: 0 20px 60px rgb(36 49 57 / 28%);
  animation: sheet-in 180ms ease-out;
}

.preview-sheet__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.preview-sheet h2 {
  font-size: 1.25rem;
}

.sheet-section + .sheet-section {
  margin-top: 22px;
}

.sheet-section > h3 {
  margin: 0 0 10px;
  color: var(--color-ink-muted);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.theme-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.theme-options button {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 72px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 8px 4px;
  border: 1px solid rgb(83 106 120 / 35%);
  border-radius: var(--radius-control);
  background: transparent;
  color: var(--color-ink-muted);
  cursor: pointer;
  gap: 6px;
  font-size: 0.76rem;
}

.theme-options button[aria-pressed="true"] {
  border-color: var(--color-raspberry);
  background: color-mix(in srgb, var(--color-raspberry) 10%, transparent);
  color: var(--color-raspberry-dark);
  font-weight: 600;
}

.theme-options__check {
  position: absolute;
  top: 7px;
  right: 7px;
}

.preview-options {
  display: grid;
  overflow: hidden;
  border: 1px solid rgb(83 106 120 / 25%);
  border-radius: var(--radius-control);
}

.preview-options button {
  display: flex;
  min-height: 52px;
  align-items: center;
  justify-content: space-between;
  padding: 0 15px;
  border: 0;
  background: transparent;
  cursor: pointer;
  font-size: 0.9rem;
}

.preview-options button + button {
  border-top: 1px solid rgb(83 106 120 / 22%);
}

.preview-options button[aria-pressed="true"] {
  color: var(--color-raspberry-dark);
  font-weight: 600;
}

@keyframes sheet-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
}

@media (max-width: 479px) {
  html,
  body {
    background: var(--color-canvas);
  }

  .app-shell {
    box-shadow: none;
  }
}

@media (min-width: 720px) {
  .prototype-stage {
    padding: 28px 0;
  }

  .app-shell {
    min-height: calc(100vh - 56px);
    min-height: calc(100dvh - 56px);
    border: 1px solid rgb(83 106 120 / 26%);
    border-radius: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}