:root {
  color-scheme: light;
  --bg: #f5f6f3;
  --panel: #ffffff;
  --panel-soft: #f0f3ef;
  --ink: #15211f;
  --muted: #66736f;
  --line: #d9ded8;
  --line-strong: #b8c2bc;
  --green: #2f6f5e;
  --green-dark: #215247;
  --blue: #315c97;
  --blue-soft: #eaf0f8;
  --red: #b85846;
  --red-soft: #faece8;
  --amber: #a97a20;
  --amber-soft: #fff3d7;
  --dialog-backdrop: #4f5754;
  --shadow: 0 14px 34px #dde3dd;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #111614;
  --panel: #1b221f;
  --panel-soft: #26302c;
  --ink: #f2f5f1;
  --muted: #a9b4ae;
  --line: #3a453f;
  --line-strong: #536159;
  --green: #60a98f;
  --green-dark: #4e927b;
  --blue: #86aee5;
  --blue-soft: #202c3b;
  --red: #d06c5a;
  --red-soft: #3b211d;
  --amber: #d3a84c;
  --amber-soft: #352a17;
  --dialog-backdrop: #080b0a;
  --shadow: 0 14px 34px #090d0b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  color: var(--muted);
}

.app-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 0 0 94px;
}

.view-header p,
.muted {
  color: var(--muted);
}

.view-header p {
  margin: 5px 0 0;
}

.tabs {
  position: fixed;
  right: 12px;
  bottom: 12px;
  left: 12px;
  z-index: 8;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 6px;
  width: min(720px, calc(100% - 24px));
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
  padding: 6px;
}

.tab {
  display: grid;
  min-width: 0;
  min-height: 52px;
  place-items: center;
  border: 0;
  border-top: 3px solid var(--panel);
  border-radius: 7px;
  background: var(--panel);
  color: var(--muted);
  font-weight: 800;
}

.tab.is-active {
  border-top-color: var(--green);
  background: var(--panel-soft);
  color: var(--ink);
}

.tab svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.view {
  display: none;
}

.view.is-active {
  display: block;
}

.view-header {
  position: sticky;
  top: 0;
  z-index: 7;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}

.view-header h2 {
  margin: 0;
  font-size: 1.4rem;
  line-height: 1.2;
  letter-spacing: 0;
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(230px, 300px) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.side-panel,
.workspace-panel,
.history-card,
.editor-card,
.exercise-log-card,
.empty-state,
.chart-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.side-panel {
  padding: 10px;
}

.workspace-panel,
.history-card,
.editor-card,
.exercise-log-card,
.chart-card {
  padding: 16px;
}

.item-list,
.picker-panel,
.exercise-list,
.log-exercise-list,
.history-list,
.analytics-list,
.plan-form,
.exercise-form {
  display: grid;
  gap: 12px;
}

.picker-meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.item-list-button {
  width: 100%;
  min-height: 66px;
  padding: 11px 12px;
  border: 1px solid var(--panel);
  border-radius: 8px;
  background: var(--panel);
  color: var(--ink);
  text-align: left;
}

.item-list-button:hover,
.item-list-button.is-active {
  border-color: var(--green);
  background: var(--panel-soft);
}

.item-list-button strong {
  display: block;
  overflow-wrap: anywhere;
}

.item-list-button span {
  color: var(--muted);
  font-size: 0.92rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.field {
  display: grid;
  gap: 6px;
}

.field span {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 800;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel);
  color: var(--ink);
  padding: 9px 11px;
}

.field input[type="date"] {
  appearance: auto;
  cursor: pointer;
}

.field input[type="date"]::-webkit-calendar-picker-indicator,
.field input[type="time"]::-webkit-calendar-picker-indicator {
  cursor: pointer;
  min-width: 24px;
  min-height: 24px;
}

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

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

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px #d7e2f2;
  outline: 0;
}

.field textarea {
  min-height: 90px;
  resize: vertical;
}

.full-width {
  grid-column: 1 / -1;
}

.section-title,
.editor-card-header,
.history-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.section-title {
  padding-top: 6px;
  border-top: 1px solid var(--line);
}

.section-title h3,
.editor-card-header h3 {
  margin: 0;
  font-size: 1rem;
  letter-spacing: 0;
}

.editor-card-header,
.history-card-header {
  margin-bottom: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 14px;
  border: 1px solid var(--green);
  border-radius: 7px;
  background: var(--green);
  color: #fff;
  font-weight: 850;
  text-decoration: none;
}

.button:hover {
  background: var(--green-dark);
}

.button-secondary {
  border-color: var(--line-strong);
  background: var(--panel);
  color: var(--ink);
}

.button-secondary:hover {
  background: #f3f7f5;
}

.button-ghost {
  border-color: var(--panel);
  background: var(--panel);
  color: var(--blue);
}

.button-ghost:hover {
  background: var(--blue-soft);
}

.button-danger {
  border-color: var(--red);
  background: var(--red);
}

.button-danger:hover {
  background: #9e493a;
}

.button-small {
  min-height: 34px;
  padding: 0 10px;
  font-size: 0.9rem;
}

.button-icon {
  width: 38px;
  min-width: 38px;
  min-height: 38px;
  padding: 0;
}

.button-icon-small {
  width: 30px;
  min-width: 30px;
  min-height: 30px;
}

.button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.button-row,
.editor-actions,
.exercise-actions,
.set-actions,
.backup-panel {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.alert {
  display: none;
  border-radius: 8px;
  padding: 10px 12px;
  font-weight: 750;
}

.alert.is-visible {
  display: block;
}

.alert-error {
  border: 1px solid var(--red);
  background: var(--red-soft);
  color: var(--ink);
}

.alert-success {
  border: 1px solid var(--green);
  background: var(--panel-soft);
  color: var(--ink);
}

.status-chip,
.set-pill {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  border: 1px solid #cfd7d3;
  border-radius: 999px;
  background: var(--panel-soft);
  color: var(--ink);
  padding: 3px 9px;
  font-size: 0.86rem;
  font-weight: 800;
}

.status-chip-warning {
  border-color: var(--amber);
  background: var(--amber-soft);
  color: var(--ink);
}

.set-editor {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 38px;
  gap: 6px;
  align-items: end;
  padding: 7px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-soft);
}

.set-fields {
  display: grid;
  grid-template-columns: minmax(48px, 0.8fr) minmax(60px, 1fr) minmax(54px, 0.8fr);
  gap: 6px;
}

.duration-fields {
  grid-template-columns: minmax(70px, 1fr) minmax(58px, 0.7fr);
}

.set-editor .field {
  gap: 2px;
}

.set-editor .field span {
  font-size: 0.72rem;
}

.set-editor .field input,
.set-editor .field select {
  min-height: 34px;
  padding: 6px 7px;
}

.set-editor[data-kind="duration"] .strength-fields,
.set-editor[data-kind="strength"] .duration-fields {
  display: none;
}

.set-list {
  display: grid;
  gap: 8px;
  margin-top: 8px;
}

.set-pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}

.set-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  min-width: 0;
}

.set-chip-row-large {
  margin-top: 8px;
}

.set-text {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 750;
}

.exercise-note {
  margin: 8px 0 0;
  padding: 10px 12px;
  border-left: 4px solid var(--blue);
  border-radius: 6px;
  background: var(--blue-soft);
  color: var(--ink);
}

.log-picker,
.progress-controls {
  display: grid;
  gap: 12px;
  align-items: end;
}

.log-picker {
  grid-template-columns: minmax(0, 1fr) auto;
  margin-bottom: 16px;
}

.progress-controls {
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
}

.log-editor {
  display: grid;
  gap: 14px;
}

.log-meta {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 14px;
}

.history-card {
  display: grid;
  gap: 10px;
}

.history-details > summary {
  cursor: pointer;
  list-style: none;
}

.history-details > summary::-webkit-details-marker {
  display: none;
}

.history-details > summary.history-card-header {
  align-items: center;
  justify-content: flex-start;
  margin-bottom: 0;
}

.history-details[open] > summary.history-card-header {
  margin-bottom: 10px;
}

.history-details[open] .summary-chevron {
  transform: rotate(180deg);
}

.history-summary-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.history-body {
  display: grid;
  gap: 10px;
}

.history-filters {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 14px;
}

.history-entry {
  border-top: 1px solid var(--line);
  padding-top: 10px;
}

.history-entry:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.empty-state {
  padding: 28px;
  text-align: center;
}

.empty-state h3 {
  margin: 0 0 6px;
}

.empty-state p {
  margin: 0;
  color: var(--muted);
}

.progress-panel {
  display: grid;
  gap: 16px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.stat-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-soft);
  padding: 12px;
}

.stat-card span {
  color: var(--muted);
  display: block;
  font-size: 0.84rem;
  font-weight: 800;
}

.stat-card strong {
  display: block;
  margin-top: 4px;
  font-size: 1.08rem;
  overflow-wrap: anywhere;
}

.chart-card {
  min-height: 300px;
  max-width: 100%;
  overflow: hidden;
}

.chart-card svg {
  display: block;
  width: 100%;
  max-width: 100%;
  height: 280px;
}

.chart-axis {
  stroke: #b9c2bd;
  stroke-width: 1;
}

.chart-line {
  fill: none;
  stroke: var(--green);
  stroke-width: 3;
}

.chart-dot {
  fill: var(--blue);
  stroke: var(--panel);
  stroke-width: 2;
}

.analytics-row {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  padding: 10px 12px;
}

.analytics-row span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.analytics-row .status-chip {
  justify-self: end;
  width: max-content;
  max-width: 100%;
}

.plan-item-card > summary {
  cursor: pointer;
  list-style: none;
}

.plan-item-card > summary::-webkit-details-marker {
  display: none;
}

.plan-item-card > summary.editor-card-header {
  align-items: center;
  flex-direction: row;
  margin-bottom: 0;
}

.plan-item-card[open] > summary.editor-card-header {
  margin-bottom: 12px;
}

.plan-summary-main,
.plan-summary-side,
.plan-title-row {
  display: flex;
  align-items: center;
  min-width: 0;
}

.plan-summary-main {
  flex: 1 1 auto;
}

.plan-summary-side {
  flex: 0 1 auto;
  justify-content: flex-end;
  gap: 8px;
}

.plan-title-row {
  gap: 6px;
}

.plan-title-row h3 {
  min-width: 0;
  overflow-wrap: anywhere;
}

.plan-order-controls {
  display: grid;
  flex: 0 0 auto;
  gap: 3px;
}

.summary-chevron {
  display: inline-flex;
  width: 22px;
  height: 22px;
  color: var(--muted);
}

.summary-chevron svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.plan-item-card[open] .summary-chevron {
  transform: rotate(180deg);
}

.readonly-block {
  display: grid;
  gap: 6px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-soft);
  padding: 12px;
}

.readonly-note {
  margin: 0;
  color: var(--muted);
}

.about-panel {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.about-panel h3,
.about-panel p {
  margin: 0;
}

.about-list {
  display: grid;
  gap: 8px;
  margin: 0;
}

.about-list div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid var(--line);
  padding-top: 8px;
}

.about-list dt {
  color: var(--muted);
  font-weight: 800;
}

.about-list dd {
  margin: 0;
  text-align: right;
}

.social-links {
  display: flex;
  gap: 10px;
  padding-top: 4px;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-soft);
  color: var(--ink);
  text-decoration: none;
}

.social-links a:hover {
  border-color: var(--green);
  color: var(--green);
}

.social-links svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.welcome-dialog {
  width: calc(100vw - 32px);
  max-width: 480px;
  border: 0;
  border-radius: 8px;
  padding: 0;
  background: var(--panel);
}

.welcome-dialog::backdrop {
  background: var(--dialog-backdrop);
}

.dialog-card {
  display: grid;
  gap: 12px;
  margin: 0;
  width: 100%;
  max-height: calc(100vh - 48px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  padding: 20px;
  box-shadow: var(--shadow);
  overflow: auto;
  overflow-wrap: anywhere;
}

.dialog-card h2,
.dialog-card p,
.dialog-card ul {
  margin: 0;
}

.dialog-card ul {
  padding-left: 20px;
}

.confirm-card {
  gap: 16px;
}

.confirm-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.toast-region {
  position: fixed;
  right: 18px;
  top: 18px;
  z-index: 10;
  pointer-events: none;
}

.toast {
  display: none;
  max-width: min(420px, calc(100vw - 36px));
  transform: translateY(-14px);
  border: 1px solid var(--line);
  border-left: 4px solid var(--green);
  border-radius: 8px;
  padding: 12px 14px;
  background: var(--panel);
  color: var(--ink);
  box-shadow: var(--shadow);
  transition: transform 160ms ease;
}

.toast.is-visible {
  display: block;
  transform: translateY(0);
}

.toast.is-error {
  border-left-color: var(--red);
  background: var(--red-soft);
  color: var(--ink);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 860px) {
  .welcome-dialog {
    width: 326px;
    max-width: calc(100vw - 32px);
  }

  .app-shell {
    width: min(100% - 20px, 1180px);
    padding-top: 0;
    padding-bottom: 82px;
  }

  .tabs {
    right: 0;
    bottom: 0;
    left: 0;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    width: 100%;
    border-right: 0;
    border-bottom: 0;
    border-left: 0;
    border-radius: 0;
    gap: 4px;
    padding: 7px 8px max(7px, env(safe-area-inset-bottom));
  }

  .tab {
    min-height: 46px;
  }

  .view-header,
  .section-title,
  .history-card-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .editor-card-header {
    align-items: center;
  }

  .plan-item-card > summary.editor-card-header {
    flex-direction: row;
  }

  .history-details > summary.history-card-header {
    align-items: center;
    flex-direction: row;
  }

  .history-summary-actions {
    gap: 6px;
  }

  .view-header .button,
  .section-title .button,
  .editor-actions .button,
  .button-row .button,
  .backup-panel .button,
  .backup-panel label {
    width: 100%;
  }

  .split-layout,
  .form-grid,
  .log-meta,
  .progress-controls,
  .log-picker,
  .history-filters,
  .analytics-row {
    grid-template-columns: 1fr;
  }

  .stat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .set-editor {
    grid-template-columns: minmax(0, 1fr) 36px;
    gap: 5px;
  }

  .set-fields {
    grid-template-columns: minmax(42px, 0.7fr) minmax(54px, 1fr) minmax(48px, 0.75fr);
    gap: 5px;
  }

  .duration-fields {
    grid-template-columns: minmax(58px, 1fr) minmax(48px, 0.75fr);
  }

  .set-editor .field input,
  .set-editor .field select {
    padding-right: 5px;
    padding-left: 5px;
  }

  .toast-region {
    top: 10px;
    right: 10px;
    left: 10px;
  }

  .toast {
    max-width: none;
  }
}