:root,
:root[data-theme="dark"] {
  --bg: #0b0b0d;
  --bg-soft: #131316;
  --surface: #18181c;
  --surface-hover: #1e1e23;
  --border: rgba(255, 255, 255, 0.07);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text-primary: #f5f5f5;
  --text-secondary: #9b9b9b;
  --text-tertiary: #707070;
  --accent: #4c7fe6;
  --accent-strong: #6f99ee;
  --accent-contrast: #ffffff;
  --danger: #e5726b;
  --shadow: 0 10px 30px -12px rgba(0, 0, 0, 0.55);
  --agenda-color: #7aa2f7;
  --tasks-color: #6fcf97;
  --notes-color: #8b93f2;
  --weighin-color: #e2789f;
}

:root[data-theme="light"] {
  --bg: #f5f4f1;
  --bg-soft: #ebe9e4;
  --surface: #ffffff;
  --surface-hover: #f7f6f3;
  --border: rgba(20, 18, 14, 0.08);
  --border-strong: rgba(20, 18, 14, 0.16);
  --text-primary: #1c1c1c;
  --text-secondary: #6b6b6b;
  --text-tertiary: #8f8f8f;
  --accent: #2f5fb8;
  --accent-strong: #24488f;
  --accent-contrast: #ffffff;
  --danger: #b23b32;
  --shadow: 0 8px 24px -14px rgba(20, 18, 14, 0.25);
  --agenda-color: #3b66c9;
  --tasks-color: #2f9e63;
  --notes-color: #5a63c9;
  --weighin-color: #c74f7a;
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text-primary);
  background: var(--bg);
  min-height: 100vh;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: clamp(1rem, 3vw, 2.5rem);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.board,
.settings-main,
.insights-board {
  flex: 1;
}

.insights-board {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(0.9rem, 2.5vw, 1.25rem);
  align-items: start;
  align-content: start;
}

@media (max-width: 760px) {
  .insights-board {
    grid-template-columns: 1fr;
  }
}

.app-header {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--border);
}

.day-nav {
  display: grid;
  grid-template-columns: 2.1rem 1fr 2.1rem;
  align-items: center;
  gap: 1rem;
}

.day-nav__date {
  font-size: clamp(1.15rem, 3vw, 1.6rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  text-align: center;
  min-width: 0;
  overflow-wrap: break-word;
}

.day-nav__btn {
  width: 2.1rem;
  height: 2.1rem;
  flex: 0 0 auto;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-secondary);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.day-nav__btn:hover {
  background: var(--surface-hover);
  border-color: var(--border-strong);
  color: var(--text-primary);
}

.app-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  padding-top: 1.1rem;
}

.app-footer__text {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  opacity: 0.7;
}

.fab-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.icon-btn {
  width: 2rem;
  height: 2rem;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.35;
  text-decoration: none;
  transition: opacity 0.15s ease;
}

.icon-btn:hover {
  opacity: 0.75;
}

.icon-btn.is-active {
  opacity: 1;
}

.icon-btn--theme .icon-moon {
  display: none;
}

:root[data-theme="light"] .icon-btn--theme .icon-sun {
  display: none;
}

:root[data-theme="light"] .icon-btn--theme .icon-moon {
  display: block;
}

.board {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-areas:
    "agenda tasks"
    "notes  notes"
    "weighin .";
  gap: clamp(0.9rem, 2.5vw, 1.25rem);
  align-items: start;
  align-content: start;
}

.card--agenda { grid-area: agenda; }
.card--tasks { grid-area: tasks; }
.card--notes { grid-area: notes; }
.card--weighin { grid-area: weighin; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: clamp(1rem, 2vw, 1.35rem);
  display: flex;
  flex-direction: column;
}

.card__header h2 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 1rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.55rem;
  letter-spacing: -0.01em;
}

.card__icon {
  width: 1.7rem;
  height: 1.7rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 0.9rem;
  background: color-mix(in srgb, var(--icon-color) 16%, transparent);
}

.card__icon--agenda { --icon-color: var(--agenda-color); }
.card__icon--tasks { --icon-color: var(--tasks-color); }
.card__icon--notes { --icon-color: var(--notes-color); }
.card__icon--weighin { --icon-color: var(--weighin-color); }

.card__form {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.card__form input[type="text"],
.card__form input[type="time"],
.card__form input[type="number"],
.card__form textarea {
  font-family: inherit;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 0.55rem 0.7rem;
  font-size: 0.9rem;
  color: var(--text-primary);
  flex: 1;
  min-width: 0;
}

.card__form input::placeholder,
.card__form textarea::placeholder {
  color: var(--text-tertiary);
}

.card__form input:focus,
.card__form textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}

.card__form input[type="time"] {
  flex: 0 0 auto;
  width: 6.5rem;
}

.card__form--agenda {
  flex-direction: column;
  align-items: stretch;
  gap: 0.5rem;
}

.card__form--agenda .card__form-row {
  display: flex;
  gap: 0.5rem;
}

.agenda-times {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.agenda-times[hidden] {
  display: none;
}

.agenda-times__sep {
  color: var(--text-tertiary);
  font-size: 0.85rem;
}

:root[data-theme="dark"] .card__form input[type="time"]::-webkit-calendar-picker-indicator {
  filter: invert(1);
}

.input-clearable {
  position: relative;
  display: flex;
  align-items: center;
  flex: 1;
  min-width: 0;
}

.input-clearable input {
  padding-right: 1.9rem;
}

.input-clear {
  position: absolute;
  right: 0.35rem;
  width: 1.3rem;
  height: 1.3rem;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.15s ease;
}

.input-clear:hover {
  color: var(--text-primary);
}

.input-clear[hidden] {
  display: none;
}

.card__form input[type="number"] {
  -moz-appearance: textfield;
}

.card__form input[type="number"]::-webkit-outer-spin-button,
.card__form input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.card__form input:read-only {
  background: transparent;
  border-style: dashed;
  color: var(--text-secondary);
  opacity: 0.75;
  cursor: default;
}

.card__form button {
  width: 1.9rem;
  height: 1.9rem;
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
  flex: 0 0 auto;
  align-self: center;
}

.card__form button:hover {
  background: var(--surface-hover);
  border-color: var(--accent);
}

.card__form button:active {
  transform: scale(0.96);
}

.card__form--note {
  flex-direction: column;
  align-items: stretch;
  margin-bottom: clamp(1rem, 2vw, 1.35rem);
}

.card__form--note textarea {
  flex: none;
  min-height: 6rem;
  padding: 0.7rem;
  resize: vertical;
}

.card__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  overflow-y: auto;
  max-height: 340px;
}

.card__empty {
  color: var(--text-tertiary);
  font-size: 0.85rem;
  margin: 0.25rem 0 0;
}

/* Agenda items */
.agenda-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  border-left: 3px solid var(--agenda-color);
  padding: 0.3rem 0 0.3rem 0.7rem;
}

.agenda-item__content {
  flex: 1;
  min-width: 0;
  font-size: 0.9rem;
  word-break: break-word;
}

.agenda-item__time {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--text-primary);
}

.agenda-item__title {
  color: var(--text-primary);
}

/* Task items */
.task-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.5rem 0.7rem;
}

.task-item__title {
  flex: 1;
  min-width: 0;
  word-break: break-word;
  font-size: 0.9rem;
}

.task-item.is-done .task-item__title {
  text-decoration: line-through;
  color: var(--text-tertiary);
}

.task-item input[type="checkbox"] {
  width: 1.05rem;
  height: 1.05rem;
  accent-color: var(--tasks-color);
  cursor: pointer;
  flex: 0 0 auto;
}

/* Delete button, shared */
.item-delete {
  background: transparent;
  border: none;
  color: var(--text-tertiary);
  font-size: 1.05rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.15rem 0.35rem;
  border-radius: 6px;
  flex: 0 0 auto;
}

.item-delete:hover {
  background: color-mix(in srgb, var(--danger) 15%, transparent);
  color: var(--danger);
}

/* Notes grid */
.notes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.75rem;
}

.note-card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  position: relative;
}

.note-card__body {
  margin: 0;
  padding-right: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  white-space: pre-wrap;
  word-break: break-word;
}

.note-card__delete {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
}

@media (max-width: 760px) {
  .board {
    grid-template-columns: 1fr;
    grid-template-areas:
      "agenda"
      "tasks"
      "notes"
      "weighin";
  }

  .card__form input[type="time"] {
    width: 5.5rem;
  }
}

/* Settings page */
.back-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: color 0.15s ease;
}

.back-link:hover {
  color: var(--text-primary);
}

.settings-main {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.card--settings {
  max-width: 420px;
  width: 100%;
}

.settings-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.settings-field label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.settings-input {
  font-family: inherit;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 0.55rem 0.7rem;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.settings-input::placeholder {
  color: var(--text-tertiary);
}

.settings-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}

/* Auth gate */
.auth-gate {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 50;
}

.auth-gate[hidden] {
  display: none;
}

.auth-gate__card {
  width: 100%;
  max-width: 300px;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.auth-gate__card h2 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.auth-gate__hint {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.auth-gate__error {
  margin: 0;
  font-size: 0.85rem;
  color: var(--danger);
}

.auth-gate__submit {
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: 9px;
  padding: 0.6rem;
  color: var(--text-primary);
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.auth-gate__submit:hover {
  background: var(--surface-hover);
  border-color: var(--accent);
}

/* Chart */
.card--chart {
  width: 100%;
}

.chart-legend {
  display: flex;
  gap: 1.25rem;
  margin-bottom: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.chart-legend[hidden] {
  display: none;
}

.chart-range {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 0.9rem;
}

.chart-range__btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 0.3rem 0.7rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.chart-range__btn:hover {
  background: var(--surface-hover);
  border-color: var(--border-strong);
  color: var(--text-primary);
}

.chart-range__btn.is-active {
  background: var(--surface-hover);
  border-color: var(--accent);
  color: var(--text-primary);
  font-weight: 600;
}

.chart-legend__item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.chart-legend__swatch {
  width: 14px;
  height: 2px;
  display: inline-block;
  border-radius: 1px;
}

.chart-legend__swatch--line {
  background: var(--weighin-color);
}

.chart-legend__swatch--trend {
  background-image: repeating-linear-gradient(to right, var(--text-tertiary) 0 4px, transparent 4px 7px);
}

.chart-wrap {
  position: relative;
  width: 100%;
}

.chart-wrap[hidden] {
  display: none;
}

#weight-chart {
  width: 100%;
  height: auto;
  display: block;
  overflow: visible;
}

.chart-gridline {
  stroke: var(--border);
  stroke-width: 1;
}

.chart-axis-line {
  stroke: var(--border-strong);
  stroke-width: 1;
}

.chart-axis-label {
  fill: var(--text-secondary);
  font-size: 10px;
  font-family: inherit;
}

.chart-data-line {
  stroke: var(--weighin-color);
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.chart-trend-line {
  stroke: var(--text-tertiary);
  stroke-width: 2;
  stroke-dasharray: 4 3;
  fill: none;
}

.chart-dot {
  fill: var(--weighin-color);
  stroke: var(--surface);
  stroke-width: 2;
}

.chart-crosshair {
  stroke: var(--border-strong);
  stroke-width: 1;
  stroke-dasharray: 2 2;
}

.chart-bar {
  fill: var(--tasks-color);
}

.chart-bar-hit {
  fill: transparent;
  cursor: pointer;
}

.chart-tooltip {
  position: absolute;
  pointer-events: none;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding: 0.4rem 0.6rem;
  font-size: 0.78rem;
  color: var(--text-primary);
  box-shadow: var(--shadow);
  transform: translate(-50%, -115%);
  white-space: nowrap;
  z-index: 5;
}

.chart-tooltip[hidden] {
  display: none;
}

.chart-tooltip strong {
  display: block;
  font-variant-numeric: tabular-nums;
  color: var(--text-primary);
}

.chart-table-toggle {
  margin-top: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.chart-table-toggle[hidden] {
  display: none;
}

.chart-table-toggle summary {
  cursor: pointer;
}

.chart-table-toggle summary:hover {
  color: var(--text-primary);
}

.chart-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.6rem;
  font-size: 0.85rem;
}

.chart-table th,
.chart-table td {
  text-align: left;
  padding: 0.35rem 0.5rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
}

.chart-table th {
  color: var(--text-secondary);
  font-weight: 500;
}

.chart-table td:last-child,
.chart-table th:last-child {
  text-align: right;
  font-variant-numeric: tabular-nums;
}