:root {
  --paper: #fffdf7;
  --paper-shade: #f7f1e4;
  --ink: #151311;
  --ink-mid: #5c5851;
  --ink-light: #8b8478;
  --ink-faint: #cfc5b7;
  --rule: rgba(33, 22, 10, 0.12);
  --red: #8f1d12;
  --red-light: #aa3522;
  --red-faint: rgba(143, 29, 18, 0.08);
  --shadow: 0 20px 60px rgba(40, 30, 20, 0.08);
  --font-serif: "Crimson Pro", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --font-mono: "SF Mono", "Menlo", "Consolas", monospace;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100dvh;
  overflow-x: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(143, 29, 18, 0.06), transparent 30%),
    radial-gradient(circle at bottom right, rgba(62, 96, 124, 0.05), transparent 32%),
    linear-gradient(180deg, #fffefb 0%, var(--paper) 55%, var(--paper-shade) 100%);
  font-family: var(--font-serif);
}

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

button {
  border: 0;
  background: none;
  cursor: pointer;
}

textarea {
  border: 0;
  resize: none;
}

::selection {
  background: var(--red-faint);
}

.app-shell {
  min-height: 100dvh;
  position: relative;
}

.app-shell::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.45;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.35), rgba(255, 255, 255, 0.35)),
    radial-gradient(rgba(40, 24, 10, 0.03) 0.7px, transparent 0.7px);
  background-size: auto, 11px 11px;
}

.view {
  display: none;
  position: relative;
  z-index: 1;
}

.view.active {
  display: block;
}

.view-home {
  width: min(100%, 760px);
  margin: 0 auto;
  padding: 0 24px calc(84px + var(--safe-bottom));
}

.home-header {
  position: relative;
  padding-top: calc(56px + var(--safe-top));
  animation: fade-slide-in 520ms var(--ease) both;
}

.header-actions {
  position: absolute;
  top: calc(56px + var(--safe-top));
  right: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sync-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ink-faint);
  flex-shrink: 0;
  transition: background 400ms var(--ease);
}

.sync-dot.synced {
  background: #5a9e7a;
}

.sync-dot.syncing {
  background: var(--ink-light);
  animation: pulse-opacity 1.2s ease-in-out infinite;
}

.sync-dot.offline {
  background: var(--ink-faint);
}

.header-link-btn {
  font-size: 10.5px;
}

.link-panel {
  margin-top: 12px;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--rule);
  border-radius: 6px;
  animation: fade-slide-in 180ms var(--ease) both;
}

.link-panel-inner {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.link-panel-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.link-panel-url {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.05em;
  color: var(--ink-mid);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

.link-panel-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-light);
}

.link-panel-footer {
  display: flex;
  align-items: center;
  gap: 12px;
}

.link-panel-close {
  display: block;
  margin-left: auto;
}

.link-panel-enter-code {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 10px;
  padding-bottom: 10px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.link-panel-enter-code .link-panel-label {
  flex: 1;
}

.link-panel-code-input {
  width: 80px;
  padding: 4px 6px;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  outline: none;
}

.link-panel-code-input:focus {
  border-color: var(--ink-mid);
}

.link-panel-code-input::placeholder {
  color: var(--ink-faint);
  text-transform: none;
  letter-spacing: normal;
}

.home-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  margin-bottom: 10px;
}

.header-link {
  color: var(--ink-light);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.header-link:hover {
  color: var(--ink);
}

.status-link {
  cursor: default;
}

.home-header h1,
.tagline {
  text-align: center;
}

.home-header h1 {
  margin: 0;
  font-size: clamp(58px, 16vw, 90px);
  font-weight: 300;
  font-style: italic;
  line-height: 0.9;
  letter-spacing: -0.04em;
}

.home-header h1::first-letter {
  color: var(--red);
}

.tagline {
  width: min(100%, 520px);
  margin: 16px auto 0;
  color: var(--ink-mid);
  font-size: 18px;
  font-style: italic;
  line-height: 1.45;
}

.date {
  margin: 14px 0 0;
  color: var(--ink-light);
  font-family: var(--font-mono);
  font-size: 11px;
}

.composer-panel {
  margin-top: 34px;
  padding: 20px 24px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--rule);
  border-radius: 6px;
  box-shadow: var(--shadow);
}

.search-panel {
  margin-top: 20px;
}

#search-input {
  width: 100%;
  padding: 8px 0;
  border: 0;
  border-bottom: 1px solid var(--rule);
  outline: none;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink);
  -webkit-appearance: none;
  appearance: none;
}

#search-input:focus {
  border-bottom-color: var(--ink);
}

#search-input::placeholder {
  color: var(--ink-faint);
  text-transform: uppercase;
}

#search-input::-webkit-search-cancel-button {
  -webkit-appearance: none;
}

.feed-tabs {
  display: flex;
  gap: 14px;
  margin-top: 12px;
}

.feed-tab {
  padding: 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  transition: color 120ms var(--ease);
}

.feed-tab:hover {
  color: var(--ink-light);
}

.feed-tab.active {
  color: var(--ink);
}

.card-stats {
  margin: 7px 0 0;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
}

.cards-panel {
  margin-top: 20px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
}

.section-label,
.section-meta,
.card-meta,
.card-footer,
.composer-note {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-label {
  color: var(--ink-light);
}

.section-meta {
  color: var(--ink-faint);
}

.composer-form {
  margin-top: 0;
}

.composer-field {
  display: block;
  position: relative;
}

#card-input {
  width: 100%;
  min-height: 0;
  padding: 8px 0;
  border-bottom: 1px solid var(--rule);
  outline: none;
  background: transparent;
  font-size: 22px;
  line-height: 1.5;
  overflow: hidden;
}

#card-input:focus {
  border-bottom-color: var(--ink);
}

#card-input::placeholder {
  color: var(--ink-faint);
  font-style: italic;
}

.composer-source-field {
  margin-top: 6px;
}

#source-input {
  width: 100%;
  padding: 6px 0;
  border: 0;
  border-bottom: 1px solid var(--rule);
  outline: none;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mid);
}

#source-input:focus {
  border-bottom-color: var(--ink);
}

#source-input::placeholder {
  color: var(--ink-faint);
}

#source-input[data-loading] {
  opacity: 0.5;
  cursor: wait;
}

.composer-footer {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  margin-top: 10px;
}

.btn-primary {
  flex-shrink: 0;
  padding: 0;
  color: var(--red);
  font-size: 18px;
  font-style: italic;
  text-transform: none;
  letter-spacing: 0;
  transition: color 160ms var(--ease), opacity 160ms var(--ease);
}

.btn-primary:hover {
  color: var(--red-light);
}

.btn-primary:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.card-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card {
  padding: 14px 22px 18px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--rule);
  border-radius: 6px;
  box-shadow: var(--shadow);
  animation: fade-slide-in 300ms var(--ease) both;
  cursor: pointer;
  transition: box-shadow 160ms var(--ease);
}

.card:hover {
  box-shadow: 0 24px 70px rgba(40, 30, 20, 0.12);
}

.card.expanded {
  box-shadow: 0 28px 80px rgba(40, 30, 20, 0.15);
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  color: var(--ink-light);
}

.card-type {
  color: var(--red);
}

.card-body {
  margin-top: 10px;
  padding-left: 0;
}

.card-text {
  margin: 0;
  color: var(--ink);
  font-size: 20px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
}

.card-quote {
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid var(--ink-faint);
  font-size: 20px;
  line-height: 1.5;
  font-style: italic;
  color: var(--ink-mid);
  white-space: pre-wrap;
  word-break: break-word;
}

.card-quote + .card-text,
.card-text + .card-quote {
  margin-top: 4px;
}

.card-source {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-light);
}

.card-source a {
  color: inherit;
  text-decoration: none;
}

.card-source a:hover {
  text-decoration: underline;
}

.card-vocab-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-top: 10px;
}

.card-vocab-word {
  font-size: 26px;
  font-weight: 400;
  font-style: italic;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.card-vocab-phonetic {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--ink-light);
}

.card-vocab-pos {
  margin: 3px 0 0;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--red);
}

.card-vocab-definition {
  margin: 8px 0 0;
  font-size: 18px;
  line-height: 1.5;
  color: var(--ink);
}

.card-panel {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
  cursor: default;
}

.card-actions {
  display: flex;
  gap: 2px;
  align-items: center;
}

.card-action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 4px;
  color: var(--ink-faint);
  transition: color 120ms var(--ease), background 120ms var(--ease);
}

.card-action-btn:hover {
  color: var(--ink-light);
  background: rgba(40, 24, 10, 0.05);
}

.card-action-btn.active {
  color: var(--ink);
  background: rgba(40, 24, 10, 0.07);
}

.card-inline:not(:empty) {
  margin-top: 12px;
}

.card-confirm {
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-confirm-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-light);
}

.btn-link {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-light);
  transition: color 120ms var(--ease);
}

.btn-link:hover {
  color: var(--ink);
}

.btn-link-primary {
  color: var(--red);
}

.btn-link-primary:hover {
  color: var(--red-light);
}

.btn-link-danger {
  color: var(--red);
}

.btn-link-danger:hover {
  color: var(--red-light);
}

.card-add-note-textarea {
  width: 100%;
  padding: 6px 0;
  border: 0;
  border-bottom: 1px solid var(--rule);
  outline: none;
  background: transparent;
  font-family: var(--font-serif);
  font-size: 18px;
  font-style: italic;
  color: var(--ink);
  resize: none;
  overflow: hidden;
}

.card-add-note-textarea:focus {
  border-bottom-color: var(--ink);
}

.card-add-note-textarea::placeholder {
  color: var(--ink-faint);
}

.card-add-note-footer {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 8px;
}

.card-edit-form {
  margin-top: 10px;
}

.card-edit-textarea {
  width: 100%;
  padding: 8px 0;
  border: 0;
  border-bottom: 1px solid var(--rule);
  outline: none;
  background: transparent;
  font-family: var(--font-serif);
  font-size: 20px;
  line-height: 1.5;
  color: var(--ink);
  resize: none;
  overflow: hidden;
}

.card-edit-textarea:focus {
  border-bottom-color: var(--ink);
}

.card-edit-source {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 6px 0;
  border: 0;
  border-bottom: 1px solid var(--rule);
  outline: none;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mid);
}

.card-edit-source:focus {
  border-bottom-color: var(--ink);
}

.card-edit-source::placeholder {
  color: var(--ink-faint);
}

.card-edit-footer {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 10px;
}

.card-notes:not(:empty) {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
}

.card-note-text {
  margin: 0;
  font-size: 17px;
  line-height: 1.5;
  color: var(--ink-mid);
  white-space: pre-wrap;
  word-break: break-word;
}

.conversation-thread {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.conversation-thread:not(:empty) {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
}

.conversation-question {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-light);
}

.conversation-question::before {
  content: "q  ";
  color: var(--red);
}

.conversation-answer {
  margin: 0;
  font-size: 18px;
  line-height: 1.55;
  font-style: italic;
  color: var(--ink);
}

.conversation-answer.loading {
  color: var(--ink-faint);
  animation: pulse-opacity 1.2s ease-in-out infinite;
}

.conversation-answer.error {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--red);
}

.conversation-input-row {
  margin-top: 8px;
}

.conversation-input {
  width: 100%;
  padding: 8px 0;
  border: 0;
  border-bottom: 1px solid var(--rule);
  outline: none;
  background: transparent;
  font-family: var(--font-serif);
  font-size: 18px;
  font-style: italic;
  color: var(--ink);
}

.conversation-input:focus {
  border-bottom-color: var(--ink);
}

.conversation-input::placeholder {
  color: var(--ink-faint);
}

.empty-state {
  padding: 26px 0 8px;
  color: var(--ink-mid);
  font-size: 18px;
  font-style: italic;
  line-height: 1.5;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(24px + var(--safe-bottom));
  transform: translateX(-50%) translateY(12px);
  min-width: 140px;
  max-width: min(90vw, 360px);
  padding: 10px 16px;
  border: 1px solid var(--rule);
  background: var(--paper);
  box-shadow: var(--shadow);
  color: var(--ink-mid);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-align: center;
  text-transform: uppercase;
  opacity: 0;
  pointer-events: none;
  z-index: 10;
}

.toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (min-width: 720px) {
  .view-home {
    padding: 0 40px calc(96px + var(--safe-bottom));
  }
}

@media (max-width: 640px) {
  .tagline {
    font-size: 16px;
  }

  #card-input {
    font-size: 19px;
  }

  .card-text,
  .card-quote {
    font-size: 18px;
  }
}

@media (max-width: 520px) {
  .view-home {
    padding: 0 20px calc(84px + var(--safe-bottom));
  }

  .home-header {
    padding-top: calc(40px + var(--safe-top));
  }

  .header-actions {
    top: calc(40px + var(--safe-top));
  }

  .composer-footer,
  .card-meta {
    flex-direction: column;
    align-items: flex-end;
  }

  .tagline {
    width: min(100%, 360px);
    font-size: 15px;
  }

  #card-input {
    font-size: 18px;
  }

  .composer-prefix {
    top: 12px;
  }

  .btn-primary {
    font-size: 17px;
  }

  .composer-panel {
    padding: 16px 18px;
  }

  .card {
    padding: 14px 18px 18px;
  }

  .card-text,
  .card-quote {
    font-size: 17px;
  }
}

@media (hover: none) and (pointer: coarse) {
  #card-input {
    font-size: 16px;
  }
}

@keyframes pulse-opacity {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

@keyframes fade-slide-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

body.shared-card-open {
  overflow: hidden;
}

.shared-card-screen {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(circle at top left, rgba(143, 29, 18, 0.06), transparent 30%),
    radial-gradient(circle at bottom right, rgba(62, 96, 124, 0.05), transparent 32%),
    linear-gradient(180deg, #fffefb 0%, var(--paper) 55%, var(--paper-shade) 100%);
  animation: fade-slide-in 200ms var(--ease) both;
}

.shared-card-screen-header {
  display: flex;
  align-items: center;
  padding: calc(16px + var(--safe-top)) 24px 14px;
  border-bottom: 1px solid var(--rule);
  flex-shrink: 0;
}

.shared-card-back {
  font-size: 11px;
}


.shared-card-content {
  flex: 1;
  overflow-y: auto;
  padding: 28px 24px calc(40px + var(--safe-bottom));
  width: min(100%, 760px);
  margin: 0 auto;
  box-sizing: border-box;
}