/* Tafels oefenen — screen + A4 print */

:root {
  --ink: #1a2a24;
  --muted: #4a5c54;
  --paper: #f7f3eb;
  --panel: #fffdf8;
  --line: #d4cbb8;
  --accent: #1f6b4a;
  --accent-hover: #18563b;
  --accent-soft: #e4f2ea;
  --warn: #8a2e1f;
  --ok: #1f6b4a;
  --shadow: 0 12px 40px rgba(26, 42, 36, 0.08);
  --radius: 14px;
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Source Sans 3", "Segoe UI", sans-serif;
}

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

html {
  font-size: 18px;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(ellipse 80% 50% at 10% 0%, #e8f0e4 0%, transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 20%, #efe6d4 0%, transparent 50%),
    linear-gradient(165deg, #f3eee4 0%, var(--paper) 45%, #eef2ea 100%);
  line-height: 1.45;
}

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

.app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

.site-header {
  margin-bottom: 2rem;
}

.brand {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--accent);
  line-height: 1.1;
}

.page-title {
  margin: 0.75rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 600;
  line-height: 1.25;
  color: var(--ink);
}

.intro {
  margin-top: 1rem;
  /* max-width: 42rem; */
}

.lead {
  margin: 0;
  color: var(--ink);
  font-size: 1.05rem;
  line-height: 1.55;
}

.story {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.55;
}

.site-footer {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  max-width: 42rem;
}

.footer-title {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
}

.site-footer p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

.layout {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 880px) {
  .layout {
    grid-template-columns: minmax(280px, 340px) 1fr;
    align-items: start;
  }
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.35rem 1.4rem 1.5rem;
}

.panel h2 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
}

.field {
  margin: 0 0 1.15rem;
  padding: 0;
  border: 0;
}

.field legend {
  padding: 0;
  margin-bottom: 0.55rem;
  font-weight: 700;
  font-size: 0.95rem;
}

.check,
.radio {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  margin-bottom: 0.45rem;
  cursor: pointer;
}

.check input,
.radio input {
  margin-top: 0.3rem;
  accent-color: var(--accent);
}

.hint {
  color: var(--muted);
  font-weight: 400;
  font-size: 0.9em;
}

.check-stack {
  flex-direction: column;
  align-items: stretch;
  gap: 0.2rem;
}

.check-row {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
}

.check-row input {
  margin-top: 0.3rem;
  accent-color: var(--accent);
}

.hint-block {
  display: block;
  margin-left: 1.55rem;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 400;
}

.table-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.4rem;
}

.table-chip {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 2.5rem;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  background: #fff;
  font-weight: 700;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
  user-select: none;
}

.table-chip input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.table-chip:has(input:checked) {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}

.table-chip:has(input:focus-visible) {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.table-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.55rem;
}

.radio-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
}

.count-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
}

.count-label input {
  width: 4.5rem;
  font-family: inherit;
  font-size: 1.05rem;
  font-weight: 700;
  padding: 0.45rem 0.55rem;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  text-align: center;
}

.count-label input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

.count-presets {
  display: flex;
  gap: 0.4rem;
}

.btn-preset {
  appearance: none;
  min-width: 2.6rem;
  padding: 0.4rem 0.55rem;
  border: 1.5px solid var(--line);
  border-radius: 8px;
  background: #fff;
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  color: var(--ink);
}

.btn-preset:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}

.btn-preset.is-active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}

.count-hint {
  margin: 0.5rem 0 0;
  margin-left: 0;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 0.5rem;
}

.btn {
  appearance: none;
  border: none;
  border-radius: 10px;
  padding: 0.65rem 1.1rem;
  font-family: inherit;
  font-size: 0.98rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

.btn-secondary {
  background: #fff;
  color: var(--ink);
  border: 1.5px solid var(--line);
}

.btn-secondary:hover:not(:disabled) {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.btn-text {
  appearance: none;
  border: none;
  background: none;
  padding: 0;
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--accent);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.error {
  color: var(--warn);
  font-size: 0.92rem;
  margin: 0 0 0.75rem;
}

.preview-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.preview-toolbar h2 {
  margin: 0;
}

.toolbar-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.btn-icon .icon {
  width: 1.1em;
  height: 1.1em;
  flex-shrink: 0;
}

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

.sheet-preview {
  border: 1px dashed var(--line);
  border-radius: 10px;
  background: #fff;
  padding: 1rem 1.1rem 1.2rem;
}

.sheet-meta {
  margin: 0 0 0.85rem;
  font-size: 0.88rem;
  color: var(--muted);
}

.exercise-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.55rem 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.exercise-grid.count-dense {
  grid-template-columns: repeat(3, 1fr);
  gap: 0.45rem 1rem;
  font-size: 0.95rem;
}

.exercise-item {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  font-variant-numeric: tabular-nums;
}

.exercise-num {
  min-width: 1.6em;
  color: var(--muted);
  font-size: 0.85em;
}

.exercise-prompt {
  font-weight: 600;
}

.exercise-blank {
  flex: 1;
  border-bottom: 1.5px solid var(--ink);
  min-width: 2.2em;
  height: 1.1em;
}

.exercise-answer {
  font-weight: 700;
  color: var(--accent);
}

/* Digital overlay */
.digital {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  background: rgba(26, 42, 36, 0.45);
  backdrop-filter: blur(4px);
}

.digital[hidden] {
  display: none;
}

.digital-card {
  width: min(420px, 100%);
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  border: 1px solid var(--line);
}

.digital-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.digital-header h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.4rem;
}

.digital-progress {
  margin: 0 0 0.5rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.digital-prompt {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.digital-form {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.digital-form input {
  width: 100%;
  font-family: inherit;
  font-size: 1.35rem;
  font-weight: 700;
  padding: 0.55rem 0.75rem;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  text-align: center;
}

.digital-form .btn {
  width: 100%;
}

.digital-form input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

.digital-feedback {
  min-height: 1.4em;
  margin: 0.85rem 0 0;
  font-weight: 700;
}

.digital-feedback.is-ok {
  color: var(--ok);
}

.digital-feedback.is-bad {
  color: var(--warn);
}

.digital-score {
  margin: 0 0 1.25rem;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
}

/* Print */
.print-only {
  display: none;
}

@media print {
  body {
    background: #fff;
    color: #000;
  }

  .no-print {
    display: none !important;
  }

  .print-only.print-active {
    display: block !important;
  }

  .print-page {
    padding: 0;
  }

  .print-page .sheet-title {
    font-family: Georgia, "Times New Roman", serif;
    font-size: 16pt;
    margin: 0 0 4mm;
  }

  .print-page .sheet-meta {
    font-size: 9pt;
    color: #444;
    margin: 0 0 6mm;
  }

  .print-page .exercise-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 5mm 10mm;
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: 12pt;
  }

  .print-page .exercise-grid.count-dense {
    grid-template-columns: repeat(3, 1fr);
    gap: 4mm 8mm;
    font-size: 11pt;
  }

  .print-page .exercise-item {
    display: flex;
    align-items: baseline;
    gap: 2mm;
    break-inside: avoid;
  }

  .print-page .exercise-num {
    min-width: 8mm;
    color: #555;
    font-size: 0.9em;
  }

  .print-page .exercise-prompt {
    font-weight: 600;
  }

  .print-page .exercise-blank {
    flex: 1;
    border-bottom: 1px solid #000;
    min-width: 14mm;
    height: 5mm;
  }

  .print-page .exercise-answer {
    font-weight: 700;
  }

  @page {
    size: A4;
    margin: 14mm 14mm 16mm;
  }
}