:root {
  --tg-theme-bg-color: #17212b;
  --tg-theme-secondary-bg-color: #232e3c;
  --tg-theme-section-bg-color: #1e2c3a;
  --tg-theme-section-header-text-color: #708499;
  --tg-theme-text-color: #f5f5f5;
  --tg-theme-hint-color: #708499;
  --tg-theme-link-color: #5288c1;
  --tg-theme-button-color: #5288c1;
  --tg-theme-button-text-color: #ffffff;
  --tg-theme-destructive-text-color: #ec3942;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  background-color: var(--tg-theme-bg-color);
  color: var(--tg-theme-text-color);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
}

input, textarea, select {
  font-size: 16px;
}

#root {
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

/* ---- TABS ---- */
.tabs {
  position: sticky;
  top: 0;
  z-index: 10;
  background-color: var(--tg-theme-bg-color);
  display: flex;
  gap: 6px;
  padding: 10px 12px;
  border-bottom: 1px solid rgba(112, 132, 153, 0.15);
}

.tab-btn {
  flex: 1;
  padding: 7px 4px;
  border: none;
  border-radius: 20px;
  background: transparent;
  color: var(--tg-theme-hint-color);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: none;
}

.tab-btn.active {
  background-color: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
}

/* ---- CONTENT ---- */
.content {
  flex: 1;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ---- SECTION ---- */
.section-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--tg-theme-section-header-text-color);
  padding: 0 4px;
  margin-bottom: 6px;
}

.section-body {
  background-color: var(--tg-theme-section-bg-color);
  border-radius: 12px;
  overflow: hidden;
}

/* ---- LIST ITEMS ---- */
.list-item {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 12px;
  border-bottom: 0.5px solid rgba(112, 132, 153, 0.2);
}

.list-item:last-child {
  border-bottom: none;
}

.list-item-name {
  flex: 1;
  font-size: 15px;
  color: var(--tg-theme-text-color);
}

.btn-delete {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border: none;
  border-radius: 50%;
  background: rgba(236, 57, 66, 0.15);
  color: var(--tg-theme-destructive-text-color);
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.btn-delete:disabled {
  opacity: 0.3;
  cursor: default;
}

/* ---- ADD ROW ---- */
.add-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-top: 0.5px solid rgba(112, 132, 153, 0.2);
}

.add-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--tg-theme-text-color);
  font-size: 15px;
  font-family: inherit;
  padding: 4px 0;
}

.add-input::placeholder {
  color: var(--tg-theme-hint-color);
}

.btn-add {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border: none;
  border-radius: 50%;
  background-color: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

/* ---- FORM ROWS ---- */
.form-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 44px;
  padding: 8px 12px;
  border-bottom: 0.5px solid rgba(112, 132, 153, 0.2);
}

.form-row:last-child {
  border-bottom: none;
}

.form-label {
  flex: 1;
  font-size: 15px;
  color: var(--tg-theme-text-color);
  margin-right: 12px;
}

.form-hint {
  font-size: 13px;
  color: var(--tg-theme-hint-color);
  padding: 8px 12px 10px;
  line-height: 1.4;
}

/* ---- NUMBER INPUT ---- */
.num-input {
  width: 72px;
  text-align: center;
  background-color: var(--tg-theme-secondary-bg-color);
  border: none;
  border-radius: 8px;
  color: var(--tg-theme-text-color);
  font-size: 15px;
  font-family: inherit;
  padding: 6px 8px;
  outline: none;
  -moz-appearance: textfield;
}

.num-input::-webkit-outer-spin-button,
.num-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
}

/* ---- MEASUREMENT GRID ---- */
.measure-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 12px;
}

.measure-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.measure-field label {
  font-size: 12px;
  color: var(--tg-theme-hint-color);
}

.measure-input {
  width: 100%;
  text-align: center;
  background-color: var(--tg-theme-secondary-bg-color);
  border: none;
  border-radius: 8px;
  color: var(--tg-theme-text-color);
  font-size: 18px;
  font-family: inherit;
  padding: 8px;
  outline: none;
  -moz-appearance: textfield;
}

.measure-input::-webkit-outer-spin-button,
.measure-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
}

.measure-date {
  padding: 0 12px 10px;
  font-size: 12px;
  color: var(--tg-theme-hint-color);
}

.btn-save {
  display: block;
  width: calc(100% - 24px);
  margin: 0 12px 12px;
  padding: 10px;
  border: none;
  border-radius: 10px;
  background-color: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
}

/* ---- TOGGLE ---- */
.toggle-wrapper {
  position: relative;
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.toggle-input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-track {
  display: inline-block;
  width: 50px;
  height: 30px;
  background-color: rgba(112, 132, 153, 0.35);
  border-radius: 15px;
  cursor: pointer;
  position: relative;
}

.toggle-input:checked + .toggle-track {
  background-color: var(--tg-theme-button-color);
}

.toggle-track::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.toggle-input:checked + .toggle-track::after {
  left: 23px;
}

/* ---- BADGE ---- */
.badge {
  font-size: 11px;
  font-weight: 600;
  background-color: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
  border-radius: 6px;
  padding: 2px 6px;
  margin-left: 6px;
  flex-shrink: 0;
}

/* ---- COPY BTN ---- */
.btn-copy {
  flex-shrink: 0;
  border: none;
  background: transparent;
  color: var(--tg-theme-link-color);
  font-size: 13px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
}

/* ---- SHARE BTN ---- */
.btn-share {
  flex-shrink: 0;
  border: none;
  background: transparent;
  color: var(--tg-theme-link-color);
  font-size: 18px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
}

/* ---- FORBIDDEN/ERROR SCREENS ---- */
.screen-center {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px 24px;
  text-align: center;
  gap: 12px;
}

.screen-icon {
  font-size: 48px;
  line-height: 1;
}

.screen-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--tg-theme-text-color);
}

.screen-subtitle {
  font-size: 14px;
  color: var(--tg-theme-hint-color);
}

/* ---- TOAST ---- */
.toast {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  max-width: 90%;
  background: rgba(40, 50, 60, 0.95);
  color: #fff;
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 14px;
  z-index: 1000;
  pointer-events: none;
  white-space: pre-line;
  text-align: center;
}

.toast.toast-error {
  background: rgba(180, 30, 40, 0.95);
}

.toast.toast-success {
  background: rgba(30, 120, 60, 0.95);
}

.toast-fade-out {
  opacity: 0;
}

/* ---- LOADING ---- */
.loading-screen {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--tg-theme-hint-color);
  font-size: 15px;
}

/* ---- USERS ---- */
.user-info {
  flex: 1;
  display: flex;
  align-items: center;
  min-width: 0;
}

.user-name {
  font-size: 15px;
  color: var(--tg-theme-text-color);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.user-username {
  font-size: 13px;
  color: var(--tg-theme-hint-color);
  margin-left: 4px;
}

/* ---- INVITATION TOKEN ---- */
.inv-token {
  flex: 1;
  font-size: 13px;
  color: var(--tg-theme-hint-color);
  font-family: monospace;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.inv-date {
  font-size: 12px;
  color: var(--tg-theme-hint-color);
  margin-right: 6px;
  flex-shrink: 0;
}

/* ---- LOG ---- */
.log-list {
  padding: 0;
}
.log-row {
  padding: 8px 12px;
  border-bottom: 0.5px solid var(--tg-theme-hint-color);
  font-size: 13px;
  line-height: 1.4;
}
.log-row:last-child { border-bottom: none; }
.log-date {
  color: var(--tg-theme-hint-color);
  font-family: ui-monospace, SFMono-Regular, monospace;
  margin-right: 6px;
}
.log-actor {
  font-weight: 500;
  margin-right: 4px;
}
.log-details {
  color: var(--tg-theme-hint-color);
  margin-left: 4px;
}

/* ---- BUTTON PRIMARY ---- */
.btn-primary {
  display: block;
  width: calc(100% - 24px);
  margin: 12px;
  padding: 10px;
  border: none;
  border-radius: 10px;
  background-color: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  text-align: center;
}