* { box-sizing: border-box; }

:root {
  --color-primary: #6c3ce9;
  --color-primary-light: #efe7fd;
  --color-danger: #e8720c;
  --color-danger-light: #fce4cc;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #f2f2f7;
  color: #1c1c1e;
}

.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.login-card {
  background: #fff;
  border-radius: 16px;
  padding: 24px;
  width: 100%;
  max-width: 320px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.login-card h1 {
  font-size: 18px;
  text-align: center;
  margin: 0 0 8px;
}

.app {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-bottom: 64px;
}

.topbar {
  position: sticky;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 14px 16px;
  z-index: 10;
}

.topbar h1 {
  margin: 0;
  font-size: 18px;
}

.panel {
  padding: 12px;
  flex: 1;
}

.hidden { display: none !important; }

.add-box {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
}

.add-box-column {
  flex-direction: column;
}

input[type="text"], input[type="password"], input[type="datetime-local"], textarea {
  border: 1px solid #d1d1d6;
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 15px;
  background: #fff;
  width: 100%;
}

.add-box input[type="text"] {
  flex: 1;
}

textarea {
  min-height: 60px;
  resize: vertical;
  font-family: inherit;
}

.primary-btn, .secondary-btn, .icon-btn {
  border: none;
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 16px;
  cursor: pointer;
}

.primary-btn {
  background: var(--color-primary);
  color: #fff;
  min-width: 44px;
}

.primary-btn.full-width {
  width: 100%;
  margin-top: 8px;
}

.secondary-btn {
  background: #e5e5ea;
  color: #1c1c1e;
  width: 100%;
  margin-top: 12px;
}

.icon-btn {
  background: #e5e5ea;
}

.add-extra {
  background: #fff;
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.add-extra label {
  font-size: 13px;
  color: #6b6b70;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.filter-row {
  font-size: 14px;
  color: #6b6b70;
  margin-bottom: 8px;
}

.item-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.item-card {
  background: #fff;
  border-radius: 12px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.item-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.item-row .grow {
  flex: 1;
  min-width: 0;
  word-break: break-word;
}

.item-title {
  font-size: 15px;
}

.item-title.done {
  text-decoration: line-through;
  color: #9a9a9e;
}

.item-desc {
  font-size: 13px;
  color: #6b6b70;
  margin-top: 2px;
}

.badge {
  display: inline-block;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 8px;
  background: #f0f0f2;
  color: #6b6b70;
  margin-top: 4px;
}

.badge.overdue {
  background: var(--color-danger-light);
  color: var(--color-danger);
}

.reminders {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.reminder-chip {
  font-size: 12px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 8px;
  padding: 2px 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.reminder-chip button {
  border: none;
  background: none;
  color: var(--color-primary);
  cursor: pointer;
  font-size: 13px;
  padding: 0;
}

.add-reminder-row {
  display: flex;
  gap: 6px;
  margin-top: 4px;
}

.add-reminder-row input {
  flex: 1;
}

.icon-action {
  border: none;
  background: none;
  font-size: 18px;
  cursor: pointer;
  color: #9a9a9e;
  padding: 2px 4px;
}

.icon-action.danger:hover {
  color: var(--color-danger);
}

.icon-alarm {
  color: var(--color-danger);
  flex-shrink: 0;
  vertical-align: -2px;
}

.checkbox {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  margin-top: 1px;
}

.empty-state {
  text-align: center;
  color: #9a9a9e;
  padding: 24px 0;
  font-size: 14px;
}

.error {
  color: var(--color-danger);
  font-size: 13px;
  min-height: 16px;
  margin: 0;
  text-align: center;
}

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  max-width: 480px;
  margin: 0 auto;
  display: flex;
  background: #fff;
  border-top: 1px solid #e5e5ea;
  z-index: 10;
}

.nav-btn {
  flex: 1;
  border: none;
  background: none;
  padding: 10px 0;
  font-size: 13px;
  color: #6b6b70;
  cursor: pointer;
}

.nav-btn.active {
  color: var(--color-primary);
  font-weight: 600;
}

.note-meta {
  font-size: 12px;
  color: #9a9a9e;
}

.panel-chat {
  display: flex;
  flex-direction: column;
  padding: 12px 12px 0;
  height: calc(100vh - 52px - 64px);
}

.chat-toolbar {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
}

.chat-toolbar .icon-btn {
  font-size: 13px;
  padding: 6px 10px;
}

.chat-toolbar .icon-btn.active {
  background: var(--color-primary);
  color: #fff;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-bottom: 8px;
}

.chat-message {
  max-width: 80%;
  padding: 10px 12px;
  border-radius: 14px;
  font-size: 15px;
  white-space: pre-wrap;
  word-break: break-word;
}

.chat-message.user {
  align-self: flex-end;
  background: var(--color-primary);
  color: #fff;
  border-bottom-right-radius: 4px;
}

.chat-message.assistant {
  align-self: flex-start;
  background: #fff;
  color: #1c1c1e;
  border-bottom-left-radius: 4px;
}

.chat-input-row {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 8px 0 12px;
  background: #f2f2f7;
}

.chat-input-row textarea {
  flex: 1;
  min-height: 40px;
  max-height: 120px;
  resize: none;
}

.chat-input-row .primary-btn {
  height: 40px;
}

.settings-section {
  background: #fff;
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 12px;
}

.settings-section h2 {
  font-size: 15px;
  margin: 0 0 10px;
}

.settings-label {
  font-size: 13px;
  color: #6b6b70;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 8px;
}

.settings-textarea {
  min-height: 140px;
  font-size: 13px;
}

.settings-actions {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.settings-actions .primary-btn,
.settings-actions .secondary-btn {
  margin-top: 0;
  width: auto;
  flex: 1;
}

.usage-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 12px;
}

.usage-stat-tile {
  background: #f2f2f7;
  border-radius: 10px;
  padding: 10px;
}

.usage-stat-tile .label {
  font-size: 12px;
  color: #6b6b70;
}

.usage-stat-tile .value {
  font-size: 16px;
  font-weight: 600;
  margin-top: 2px;
}

.usage-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.usage-table th, .usage-table td {
  text-align: left;
  padding: 4px 6px;
  border-bottom: 1px solid #e5e5ea;
  white-space: nowrap;
}

.usage-table-wrap {
  overflow-x: auto;
}