:root {
  --paper: #f4f1ea;
  --surface: #fffdf8;
  --ink: #20201d;
  --muted: #6d6a61;
  --line: #d8d0c1;
  --sage: #587265;
  --sage-dark: #283d35;
  --clay: #b26645;
  --steel: #27313b;
  --gold: #c19a52;
  --shadow: 0 18px 60px rgba(39, 49, 59, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
  font-family: "Palatino Linotype", "Book Antiqua", "Songti SC", SimSun, serif;
}

body {
  margin: 0;
}

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

button {
  cursor: pointer;
}

.app-shell {
  min-height: 100vh;
}

.topbar {
  align-items: center;
  background: rgba(244, 241, 234, 0.94);
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 24px;
  justify-content: space-between;
  padding: 18px clamp(18px, 4vw, 48px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  align-items: center;
  display: flex;
  gap: 14px;
  min-width: 0;
}

.brand-mark {
  align-items: center;
  background: var(--steel);
  color: var(--paper);
  display: inline-flex;
  font-family: Georgia, serif;
  font-size: 14px;
  height: 42px;
  justify-content: center;
  letter-spacing: 0;
  width: 42px;
}

.brand h1 {
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 500;
  line-height: 1.05;
  margin: 0;
}

.brand p,
.hero-copy p {
  color: var(--muted);
  margin: 4px 0 0;
}

.profile-switch {
  display: flex;
  gap: 8px;
}

.profile-button,
.tab,
.primary-button,
.secondary-button,
.danger-button {
  border: 1px solid var(--line);
  border-radius: 6px;
  min-height: 40px;
  padding: 9px 14px;
}

.profile-button,
.tab,
.secondary-button {
  background: var(--surface);
  color: var(--ink);
}

.profile-button.is-active,
.tab.is-active,
.primary-button {
  background: var(--sage-dark);
  border-color: var(--sage-dark);
  color: #fffdf8;
}

.danger-button {
  background: #fff6f2;
  border-color: #e0b7a5;
  color: #9a3d23;
}

main {
  padding: 28px clamp(18px, 4vw, 48px) 48px;
}

.hero-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  margin-bottom: 22px;
}

.hero-copy {
  align-content: end;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  min-height: 260px;
  padding: clamp(22px, 4vw, 42px);
}

.eyebrow {
  color: var(--clay);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-copy h2 {
  font-size: clamp(30px, 5vw, 58px);
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1.02;
  margin: 10px 0 24px;
  max-width: 780px;
}

.metric-strip,
.summary-grid,
.record-grid,
.export-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.metric,
.summary-item,
.record-item,
.export-panel,
.exercise-block,
.form-panel,
.history-row {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.metric,
.summary-item,
.record-item {
  padding: 14px;
}

.metric span,
.summary-item span,
.record-item span {
  color: var(--muted);
  display: block;
  font-size: 13px;
  margin-bottom: 5px;
}

.metric strong,
.summary-item strong,
.record-item strong {
  font-size: 22px;
  font-weight: 500;
}

.equipment-photo {
  background-image: linear-gradient(180deg, rgba(32, 32, 29, 0.08), rgba(32, 32, 29, 0.35)), url("1.jpg");
  background-position: center;
  background-size: cover;
  border: 1px solid var(--line);
  min-height: 260px;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px;
}

.view-stack {
  display: grid;
  gap: 18px;
}

.section-header {
  align-items: end;
  display: flex;
  gap: 18px;
  justify-content: space-between;
}

.section-header h3 {
  font-size: clamp(24px, 4vw, 38px);
  font-weight: 500;
  margin: 0;
}

.section-header p {
  color: var(--muted);
  margin: 5px 0 0;
}

.template-toggle {
  display: flex;
  gap: 8px;
}

.template-button {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  min-height: 40px;
  min-width: 58px;
}

.template-button.is-active {
  background: var(--clay);
  border-color: var(--clay);
  color: #fff;
}

.plan-note {
  display: grid;
  gap: 6px;
  background: #ebe4d6;
  border-left: 4px solid var(--gold);
  color: var(--steel);
  padding: 14px 16px;
}

.plan-note strong {
  font-size: 18px;
  font-weight: 500;
}

.plan-note span {
  color: var(--muted);
}

.exercise-list {
  display: grid;
  gap: 14px;
}

.exercise-block {
  padding: 16px;
}

.exercise-head {
  align-items: start;
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.7fr);
}

.exercise-title {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.exercise-title span {
  color: var(--clay);
  font-size: 13px;
}

.exercise-title strong {
  font-size: 22px;
  font-weight: 500;
}

.exercise-target {
  color: var(--muted);
  font-size: 14px;
}

.exercise-title p {
  color: var(--steel);
  line-height: 1.55;
  margin: 4px 0 0;
}

.exercise-fields {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

.exercise-fields input {
  min-width: 0;
}

.exercise-body {
  align-items: start;
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(220px, 0.8fr) minmax(0, 1.2fr);
  margin-top: 14px;
}

.visual-pair {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.visual-card {
  background: #f7f2e8;
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  gap: 6px;
  min-height: 132px;
  padding: 10px;
}

.visual-card span {
  color: var(--muted);
  font-size: 12px;
}

.visual-card svg,
.equipment-thumb,
.movement-gif {
  height: auto;
  max-width: 100%;
  width: 100%;
}

.equipment-thumb,
.movement-gif {
  aspect-ratio: 4 / 3;
  border: 1px solid var(--line);
  border-radius: 6px;
  display: block;
  object-fit: cover;
}

.movement-gif {
  background: #f7f2e8;
}

.field-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

label {
  color: var(--muted);
  display: grid;
  font-size: 13px;
  gap: 6px;
}

input,
select,
textarea {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  min-height: 40px;
  padding: 9px 10px;
  width: 100%;
}

textarea {
  min-height: 82px;
  resize: vertical;
}

.set-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.set-row {
  align-items: end;
  display: grid;
  gap: 10px;
  grid-template-columns: 32px repeat(4, minmax(0, 1fr));
}

.set-index {
  align-items: center;
  background: #ebe4d6;
  border-radius: 50%;
  color: var(--steel);
  display: inline-flex;
  height: 32px;
  justify-content: center;
  margin-bottom: 4px;
  width: 32px;
}

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

.form-panel,
.export-panel {
  padding: 18px;
}

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

.history-row {
  align-items: center;
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr auto;
  padding: 14px;
}

.history-row strong {
  font-weight: 500;
}

.history-row p {
  color: var(--muted);
  margin: 4px 0 0;
}

.empty {
  border: 1px dashed var(--line);
  color: var(--muted);
  padding: 24px;
  text-align: center;
}

.movement-list {
  display: grid;
  gap: 10px;
}

.movement-row {
  align-items: center;
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 10px;
  grid-template-columns: 1fr auto;
  padding: 10px 0;
}

.movement-row:last-child {
  border-bottom: 0;
}

.small-note {
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 900px) {
  .topbar,
  .section-header {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-grid,
  .exercise-head,
  .exercise-body {
    grid-template-columns: 1fr;
  }

  .metric-strip,
  .summary-grid,
  .record-grid,
  .export-grid,
  .field-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  main {
    padding-inline: 14px;
  }

  .profile-switch,
  .tabs {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .template-toggle,
  .visual-pair {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .metric-strip,
  .summary-grid,
  .record-grid,
  .export-grid,
  .field-grid,
  .set-row,
  .history-row {
    grid-template-columns: 1fr;
  }

  .set-index {
    margin-bottom: 0;
  }

  .hero-copy {
    min-height: 0;
  }
}

@media (max-width: 440px) {
  .profile-switch,
  .tabs,
  .template-toggle,
  .visual-pair {
    grid-template-columns: 1fr;
  }
}