:root {
  --color-primary: #0a6e3f;
  --color-primary-dark: #075330;
  --color-primary-light: #e6f3ec;
  --color-bg: #f5f6f8;
  --color-card: #ffffff;
  --color-text: #1f2328;
  --color-text-muted: #6b7280;
  --color-border: #e1e4e8;
  --color-border-strong: #c8ccd1;
  --color-danger: #c0392b;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.06);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Hiragino Sans',
    'Meiryo', sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  font-size: 14px;
}

/* ===== Header ===== */
.header {
  background: var(--color-primary);
  color: #fff;
  padding: 16px 24px;
  box-shadow: var(--shadow-md);
}

.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.logo {
  font-size: 20px;
  font-weight: 700;
  margin: 0;
}

.subtitle {
  font-size: 12px;
  opacity: 0.8;
  letter-spacing: 0.05em;
}

/* ===== Tabs ===== */
.tabs {
  background: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: center;
  gap: 4px;
  padding: 0 16px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.tab {
  background: transparent;
  border: none;
  padding: 14px 24px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
  font-family: inherit;
}

.tab:hover {
  color: var(--color-primary);
}

.tab.is-active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: 700;
}

/* ===== Layout ===== */
.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

.tab-content {
  display: none;
}

.tab-content.is-active {
  display: block;
}

/* ===== Card ===== */
.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 12px;
}

.card-title {
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--color-text);
  border-left: 3px solid var(--color-primary);
  padding-left: 8px;
}

.card-header .card-title {
  margin-bottom: 0;
}

.hint {
  font-size: 12px;
  color: var(--color-text-muted);
}

/* ===== Form ===== */
.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0; /* grid/flex の縮小を許可 */
}

.field-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-muted);
}

.field input,
.field select {
  font-family: inherit;
  font-size: 14px;
  padding: 8px 10px;
  border: 1px solid var(--color-border-strong);
  border-radius: 4px;
  background: #fff;
  color: var(--color-text);
  transition: border-color 0.15s, box-shadow 0.15s;
  width: 100%;
  max-width: 100%;
  min-width: 0;
}

.field input:focus,
.field select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.field-inline {
  flex-direction: row;
  align-items: center;
  gap: 8px;
}

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

.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

/* ===== Tables ===== */
.table-scroll {
  overflow-x: auto;
  margin: 0 -4px;
}

.settings-grid + .table-scroll {
  margin-top: 16px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  min-width: 560px;
}

thead th {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-weight: 700;
  padding: 8px 6px;
  border: 1px solid var(--color-border);
  text-align: center;
  white-space: nowrap;
}

tbody td,
tbody th {
  padding: 4px;
  border: 1px solid var(--color-border);
  text-align: center;
  vertical-align: middle;
}

tbody th {
  background: #f8f9fa;
  font-weight: 700;
  color: var(--color-text-muted);
}

.hanchan-table tbody tr:hover {
  background: #fafbfc;
}

.cell-input,
.cell-select {
  width: 100%;
  border: none;
  background: transparent;
  text-align: center;
  font-family: inherit;
  font-size: 13px;
  padding: 6px 4px;
  color: var(--color-text);
}

.cell-input:focus,
.cell-select:focus {
  outline: none;
  background: var(--color-primary-light);
}

.cell-input {
  min-width: 80px;
}

.cell-select {
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'><path fill='%23888' d='M0 0l5 6 5-6z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 4px center;
  padding-right: 16px;
}

.row-num {
  background: #f8f9fa;
  color: var(--color-text-muted);
  font-weight: 700;
  width: 36px;
}

.placeholder {
  color: var(--color-text-muted);
  font-style: italic;
  padding: 24px !important;
}

.val-positive {
  color: #1a7f37;
  font-weight: 700;
}

.val-negative {
  color: var(--color-danger);
  font-weight: 700;
}

.val-error {
  color: var(--color-danger);
  font-style: italic;
}

.row-total {
  background: var(--color-primary-light);
}

.row-total th,
.row-total td {
  border-top: 2px solid var(--color-primary);
  font-size: 14px;
}

/* ===== Buttons ===== */
.actions {
  margin-top: 16px;
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

.btn {
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  padding: 10px 20px;
  border-radius: 4px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
}

.btn-secondary {
  background: #fff;
  color: var(--color-text);
  border-color: var(--color-border-strong);
}

.btn-secondary:hover {
  background: #f8f9fa;
}

/* ===== Footer ===== */
.footer {
  text-align: center;
  font-size: 12px;
  color: var(--color-text-muted);
  padding: 16px;
}

.footer p {
  margin: 4px 0;
}

.disclaimer {
  max-width: 640px;
  margin: 0 auto 8px !important;
  font-size: 11px;
  line-height: 1.6;
  color: var(--color-text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
  .header {
    padding: 12px 16px;
  }
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }
  .logo {
    font-size: 18px;
  }
  .subtitle {
    font-size: 11px;
  }

  .tab {
    flex: 1;
    padding: 12px 4px;
    font-size: 13px;
  }

  .container {
    padding: 12px 8px 48px;
  }
  .card {
    padding: 14px 12px;
    margin-bottom: 12px;
  }

  .player-inputs {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }
  .settings-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  /* iOS の auto-zoom 抑止 (16px 以上必須) */
  .field input,
  .field select,
  .cell-input,
  .cell-select {
    font-size: 16px;
  }

  /* 横スクロール時のセル詰まりを緩和 */
  table {
    min-width: 0;
    font-size: 14px;
  }
  .hanchan-table {
    min-width: 520px;
  }
  .result-table {
    min-width: 320px;
  }

  thead th {
    padding: 6px 4px;
    font-size: 12px;
    /* プレイヤー名が長いときに折り返し可能 */
    white-space: normal;
    word-break: break-word;
  }
  tbody td,
  tbody th {
    padding: 2px;
  }

  .cell-input {
    min-width: 56px;
    padding: 8px 2px;
  }
  .cell-select {
    padding: 8px 14px 8px 2px;
  }

  .row-num {
    width: 28px;
    font-size: 12px;
  }

  .actions {
    flex-direction: column-reverse;
  }
  .btn {
    width: 100%;
    padding: 12px 16px;
  }

  .card-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
}

@media (max-width: 380px) {
  .container {
    padding: 8px 4px 48px;
  }
  .card {
    padding: 12px 10px;
    border-radius: 6px;
  }
  .hanchan-table {
    min-width: 480px;
  }
}