:root {
  --pdfit-ink: #172033;
  --pdfit-blue: #2563eb;
  --pdfit-soft: #eef4ff;
  --pdfit-background: #f5f7fb;
  --pdfit-surface: #ffffff;
  --pdfit-border: #d7deeb;
  --pdfit-muted: #64748b;
  --pdfit-control-muted: #64748b;
  --pdfit-control-muted-hover: #475569;
}

* {
  box-sizing: border-box;
}

body {
  color: var(--pdfit-ink);
  background: var(--pdfit-background);
  transition:
    background-color 0.2s ease,
    color 0.2s ease;
}

.bi {
  display: inline-block;
  vertical-align: -0.1em;
}

.btn .bi,
.back-link .bi {
  margin-right: 0.35rem;
}

.theme-toggle {
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
}

.btn-icon-only .bi {
  margin-right: 0;
}

body[data-theme="dark"] {
  --pdfit-ink: #e5e7eb;
  --pdfit-blue: #8ab4ff;
  --pdfit-soft: #17243d;
  --pdfit-background: #0f172a;
  --pdfit-surface: #182235;
  --pdfit-border: #334155;
  --pdfit-muted: #aab7ca;
  --pdfit-control-muted: #94a3b8;
  --pdfit-control-muted-hover: #64748b;
}

.app-shell {
  min-height: 100vh;
  background: linear-gradient(
    145deg,
    var(--pdfit-background) 0%,
    var(--pdfit-soft) 100%
  );
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
}

.brand {
  color: var(--pdfit-ink);
  font-size: 1.25rem;
  font-weight: 800;
  text-decoration: none;
}

.brand::before {
  content: "\f43f";
  margin-right: 0.35rem;
  font-family: bootstrap-icons, sans-serif;
}

.theme-toggle {
  border: 1px solid var(--pdfit-border);
  border-radius: 999px;
  color: var(--pdfit-ink);
  background: var(--pdfit-surface);
  padding: 0.45rem 0.8rem;
  font-size: 0.875rem;
  transition:
    color 0.15s ease-in-out,
    background-color 0.15s ease-in-out,
    border-color 0.15s ease-in-out;
}

.theme-toggle:hover {
  color: var(--pdfit-blue);
  background: var(--pdfit-soft);
  border-color: var(--pdfit-blue);
}

.hero-card,
.content-card {
  background: var(--pdfit-surface);
  border: 0;
  border-radius: 1.25rem;
  box-shadow: 0 1rem 2.5rem rgb(0 0 0 / 8%);
  padding: clamp(1.25rem, 4vw, 2.5rem);
}

.hero-card {
  background: var(--pdfit-ink);
  color: var(--pdfit-background);
}

h1 {
  font-weight: 800;
  letter-spacing: -0.03em;
}

h2 {
  font-size: 1.15rem;
  font-weight: 700;
}

.eyebrow {
  color: #75a6ff;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.content-card .eyebrow {
  color: var(--pdfit-blue);
}

.form-control,
.form-select {
  border-color: var(--pdfit-border);
  color: var(--pdfit-ink);
  background-color: var(--pdfit-surface);
}

.form-control::placeholder {
  color: var(--pdfit-muted);
}

.btn-workout {
  color: #fff;
  background: #2563eb;
  border-color: #2563eb;
}

.btn-workout:hover,
.btn-workout:focus-visible {
  color: #fff;
  background: #1d4ed8;
  border-color: #1d4ed8;
  box-shadow: 0 0.25rem 0.75rem rgb(37 99 235 / 25%);
}

.btn-assessment {
  color: #f59e0b;
  border: 1px solid #f59e0b;
  background: transparent;
}

.btn-assessment:hover {
  color: #111827;
  background: #f59e0b;
  border-color: #f59e0b;
}

.btn-assessment:focus-visible {
  color: #111827;
  background: #f59e0b;
  border-color: #f59e0b;
}

.btn-primary {
  color: #fff;
  background: #2563eb;
  border-color: #2563eb;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  color: #fff;
  background: #1d4ed8;
  border-color: #1d4ed8;
}

.btn-outline-secondary {
  color: var(--pdfit-control-muted);
  border-color: var(--pdfit-control-muted);
}

.btn-outline-secondary:hover,
.btn-outline-secondary:focus-visible {
  color: #fff;
  background: var(--pdfit-control-muted-hover);
  border-color: var(--pdfit-control-muted-hover);
}

.btn-outline-danger:hover,
.btn-outline-danger:focus-visible {
  color: #fff;
  background: #dc3545;
  border-color: #dc3545;
}

.day-panel,
.exercise-card {
  border: 1px solid var(--pdfit-border);
  border-radius: 0.85rem;
  padding: 1rem;
  background: var(--pdfit-surface);
}

.exercise-card + .exercise-card {
  margin-top: 0.75rem;
}

.add-exercise-button {
  border: 0;
  border-radius: 0.7rem;
  color: #fff;
  background: #16a34a;
  box-shadow: 0 0.3rem 0.75rem rgb(22 163 74 / 25%);
  font-weight: 700;
  padding: 0.65rem 1rem;
}

.add-exercise-button:hover {
  color: #fff;
  background: #15803d;
  box-shadow: 0 0.4rem 1rem rgb(22 163 74 / 35%);
}

.add-exercise-button:focus-visible {
  color: #fff;
  background: #15803d;
  border-color: #15803d;
  outline: 0;
  box-shadow: 0 0 0 0.25rem rgb(22 163 74 / 25%);
}

.exercise-heading-row {
  flex-wrap: wrap;
}

.exercise-heading-row h2 {
  min-width: 0;
}

.exercise-heading-row .add-exercise-button {
  flex-shrink: 0;
}

.nav-pills .nav-link {
  color: var(--pdfit-blue);
}

.nav-pills .nav-link:hover,
.nav-pills .nav-link:focus-visible {
  color: var(--pdfit-ink);
  background: var(--pdfit-soft);
}

.nav-pills .nav-link.active {
  color: #fff;
  background: #2563eb;
}

.nav-pills .nav-link.active:hover,
.nav-pills .nav-link.active:focus-visible {
  color: #fff;
  background: #1d4ed8;
}

.back-link {
  color: var(--pdfit-blue);
  font-weight: 700;
  text-decoration: none;
}

.image-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 1rem;
}

.image-card {
  border: 1px solid var(--pdfit-border);
  border-radius: 0.75rem;
  overflow: hidden;
  background: var(--pdfit-surface);
}

.image-card img {
  width: 100%;
  height: 130px;
  object-fit: cover;
}

.image-card .image-actions {
  padding: 0.6rem;
}

.pdf-output {
  display: none;
  max-width: 1200px;
  margin: 2rem auto;
  padding: 1rem;
}

.pdf-output.is-preview {
  display: block;
}

.pdf-preview-frame {
  min-width: 0;
  overflow-x: auto;
  padding-bottom: 0.5rem;
}

.pdf-preview-heading {
  color: var(--pdfit-ink);
  margin-bottom: 1rem;
}

.pdf-page {
  width: 277mm;
  min-height: 190mm;
  padding: 12mm;
  color: #111;
  background: #fff;
}

.pdf-page.portrait {
  width: 186mm;
  min-height: 273mm;
}

.pdf-image-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  break-before: page;
  page-break-before: always;
}

.pdf-image-page h2 {
  align-self: flex-start;
  margin-bottom: 8mm;
}

.pdf-image-full {
  display: block;
  width: auto;
  max-width: 160mm;
  max-height: 225mm;
  object-fit: contain;
}

.pdf-image-name {
  max-width: 160mm;
  margin-top: 8mm;
  overflow-wrap: anywhere;
  text-align: center;
}

.pdf-document {
  width: max-content;
}

.pdf-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

.pdf-table th,
.pdf-table td {
  border: 1px solid #b8c0ce;
  padding: 0.45rem;
  color: #111;
  text-align: left;
}

.pdf-table th {
  background: #eef2f8;
}

.pdf-image {
  max-width: 80mm;
  max-height: 80mm;
  object-fit: contain;
  margin: 4mm;
}

.blank-field {
  display: inline-block;
  min-width: 35mm;
  height: 1.2em;
  border-bottom: 1px solid #555;
}

@media (max-width: 767.98px) {
  .content-card,
  .hero-card {
    border-radius: 1rem;
  }

  .exercise-heading-row {
    align-items: stretch;
  }

  .exercise-heading-row h2,
  .exercise-heading-row .add-exercise-button {
    width: 100%;
  }

  .exercise-heading-row .add-exercise-button {
    text-align: center;
  }

  .pdf-output {
    width: 100%;
    margin: 1.25rem auto;
    padding: 0.5rem;
    overflow: hidden;
  }

  .pdf-preview-heading {
    font-size: 1.15rem;
  }

  .pdf-preview-frame {
    margin: 0 -0.5rem;
    padding: 0 0.5rem 0.75rem;
  }

  .pdf-page,
  .pdf-page.portrait {
    width: 100%;
    min-width: 0;
    min-height: auto;
    padding: 1rem;
  }

  .pdf-document {
    width: 100%;
  }

  .pdf-page h1 {
    font-size: 1.5rem;
  }

  .pdf-page h2 {
    font-size: 1.05rem;
  }

  .pdf-table {
    table-layout: fixed;
    font-size: 0.78rem;
  }

  .pdf-table th,
  .pdf-table td {
    padding: 0.35rem 0.25rem;
    overflow-wrap: anywhere;
  }

  .pdf-image {
    max-width: 100%;
    height: auto;
    margin: 0.75rem 0;
  }

  .pdf-image-page {
    min-height: 100vw;
  }

  .pdf-image-full {
    max-width: 100%;
    max-height: 70vh;
  }
}