:root {
  --bg: #f4efe6;
  --paper: #fffaf0;
  --ink: #1f2937;
  --accent: #c2410c;
  --accent-2: #0f766e;
  --line: #d6c9b3;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 20% 10%, #ffe8cc 0%, transparent 35%),
    radial-gradient(circle at 80% 20%, #dbeafe 0%, transparent 32%),
    var(--bg);
  min-height: 100vh;
}

.container {
  width: min(920px, 92vw);
  margin: 0 auto;
  padding: 2rem 0 3rem;
}

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem 1.2rem;
  box-shadow: 0 14px 30px rgba(31, 41, 55, 0.08);
}

.hero {
  padding: 2rem;
}

h1, h2 {
  margin-top: 0;
}

.nav {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.table-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1rem 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 3rem;
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  background: #fff0db;
  border: 1px solid #f1c38b;
  color: #9a3412;
  font-weight: 700;
}

button,
.btn {
  border: none;
  border-radius: 999px;
  padding: 0.65rem 1.1rem;
  font-size: 0.98rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}

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

.btn-secondary {
  background: var(--accent-2);
  color: #fff;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.section-heading {
  margin-bottom: 0.9rem;
}

.section-heading h2,
.section-heading h3,
.section-heading p {
  margin: 0;
}

.custom-settings {
  margin-top: 1.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
}

.quick-start {
  margin-top: 1.4rem;
}

.quick-start-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.table-card {
  border-radius: 18px;
  padding: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.45);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.table-card h3 {
  font-size: 3rem;
  line-height: 1;
  margin: 0.2rem 0 0.8rem;
}

.table-card-1 {
  background: linear-gradient(135deg, #fff3c4, #ffe0a3);
}

.table-card-2 {
  background: linear-gradient(135deg, #dff7ff, #b9ecff);
}

.table-card-5 {
  background: linear-gradient(135deg, #e5f8d5, #c9efb0);
}

.table-card-10 {
  background: linear-gradient(135deg, #ffe0d4, #ffc2af);
}

.table-card-label {
  margin: 0;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #7c2d12;
}

.table-card-actions {
  display: grid;
  gap: 0.65rem;
}

.table-card-actions .btn {
  width: 100%;
  text-align: center;
  font-size: 1rem;
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

input,
textarea,
select {
  width: 100%;
  padding: 0.65rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 1rem;
}

.toggle-row {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  margin-top: 1rem;
  font-weight: 700;
}

.toggle-row input {
  width: auto;
  margin: 0;
  accent-color: var(--accent);
}

textarea {
  min-height: 110px;
}

.small {
  color: #4b5563;
  font-size: 0.9rem;
}

.setting-note {
  margin: 0.8rem 0 0;
}

.result {
  font-size: 1.1rem;
  font-weight: 700;
}

.timer-display {
  margin: 0 0 0.8rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: #9a3412;
}

.is-hidden {
  display: none;
}

.ok {
  color: #166534;
}

.bad {
  color: #991b1b;
}

.worksheet-controls {
  margin-bottom: 1.2rem;
}

.worksheet-sheet {
  padding: 1.5rem;
}

.worksheet-meta {
  display: grid;
  grid-template-columns: 1fr 180px;
  gap: 1rem;
  margin-bottom: 1rem;
}

.line-field {
  display: flex;
  align-items: end;
  gap: 0.6rem;
  min-height: 2.4rem;
}

.line-field span:last-child {
  flex: 1;
  border-bottom: 2px solid var(--line);
  min-height: 1.6rem;
}

.worksheet-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem 2rem;
}

.worksheet-item {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 1.15rem;
  padding: 0.35rem 0;
  border-bottom: 1px dashed var(--line);
}

.worksheet-number {
  width: 2rem;
  color: #92400e;
  font-weight: 700;
}

.worksheet-sum {
  letter-spacing: 0.02em;
}

.answer-key {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.answer-key-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.5rem 1rem;
}

.print-note {
  margin-top: 0.8rem;
}

@page {
  size: A4;
  margin: 12mm;
}

@media print {
  body {
    background: #fff;
    min-height: auto;
  }

  .container {
    width: 100%;
    padding: 0;
  }

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

  .card {
    border: none;
    box-shadow: none;
    background: #fff;
    padding: 0;
  }

  .worksheet-sheet {
    padding: 0;
  }

  .answer-key {
    page-break-before: always;
    break-before: page;
  }
}

@media (max-width: 700px) {
  .hero {
    padding: 1.2rem;
  }

  .worksheet-meta,
  .worksheet-grid,
  .answer-key-grid {
    grid-template-columns: 1fr;
  }
}