:root {
  --bg-color: #f0f2f5;
  --card-bg: #ffffff;
  --text-primary: #1d1d1f;
  --text-secondary: #6e6e73;
  --primary-color: #0071e3;
  --primary-hover: #005bb5;
  --success-color: #34c759;
  --warning-color: #ff9500;
  --danger-color: #ff3b30;
  --info-color: #5856d6;
  --border-radius: 16px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  --page-pad: 20px;
  --card-pad: 24px;
  --exit-width: 50px;
  --grid-gap: 8px;
  /* 6セル + 7ギャップ + EXIT余白 + カード/ページ余白 を画面幅に収める */
  --cell-size: min(
    72px,
    calc(
      (100vw - (var(--page-pad) * 2) - (var(--card-pad) * 2) - var(--exit-width) - 16px - (7 * var(--grid-gap)))
      / 6
    )
  );
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: var(--page-pad);
  padding-bottom: max(var(--page-pad), env(safe-area-inset-bottom));
  overflow-x: hidden;
}

.app-container {
  width: 100%;
  max-width: 1100px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.app-container[hidden] {
  display: none !important;
}

.login-gate {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(0, 113, 227, 0.12), transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(255, 149, 0, 0.1), transparent 45%),
    var(--bg-color);
}

.login-gate[hidden] {
  display: none !important;
}

.login-card {
  width: 100%;
  max-width: 360px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 28px 24px;
}

.login-card h2 {
  font-size: 1.4rem;
  font-weight: 900;
  margin-bottom: 2px;
}

.login-lead {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.login-card label {
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: 4px;
}

.login-card input {
  padding: 10px 12px;
  border: 2px solid #e5e5ea;
  border-radius: 10px;
  font-size: 1rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}

.login-card input:focus {
  border-color: var(--primary-color);
}

.login-error {
  color: var(--danger-color);
  font-size: 0.85rem;
  font-weight: 600;
  margin: 4px 0 0;
}

.login-card .btn {
  margin-top: 10px;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--card-bg);
  padding: 16px 24px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  flex-wrap: wrap;
  gap: 16px;
}

.logo-area h1 {
  font-size: 1.6rem;
  font-weight: 900;
  color: #111;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  line-height: 1.25;
}

.logo-area h1 span {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.user-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-weight: 600;
  min-width: 0;
}

.user-bar label {
  white-space: nowrap;
}

.user-bar input {
  padding: 8px 12px;
  border: 2px solid #e5e5ea;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  outline: none;
  transition: border-color 0.2s;
  min-width: 0;
  flex: 1 1 120px;
  max-width: 220px;
}

.user-bar input:focus {
  border-color: var(--primary-color);
}

.db-status-badge {
  background: #e5f9e7;
  color: #1b8a2e;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 700;
}

.game-layout {
  display: grid;
  grid-template-columns: minmax(280px, 360px) 1fr;
  gap: 20px;
  align-items: start;
}

.card {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  padding: var(--card-pad);
  box-shadow: var(--shadow);
}

.control-panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.panel-section h2, .panel-section h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.pattern-selector-group {
  display: flex;
  gap: 8px;
  align-items: center;
  width: 100%;
}

.pattern-selector-group select {
  flex: 1;
  min-width: 0;
  padding: 10px 8px;
  border: 2px solid #e5e5ea;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 700;
  background: #fff;
  cursor: pointer;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
}

.pattern-info {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.badge {
  background: #e5e5ea;
  color: var(--text-primary);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 700;
}

.stats-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.stat-box {
  background: #f8f9fa;
  border: 2px solid #e9ecef;
  border-radius: 12px;
  padding: 12px;
  text-align: center;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--primary-color);
  margin-top: 4px;
}

.action-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.btn {
  padding: 12px 18px;
  border: none;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

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

.btn-secondary { background: #e5e5ea; color: var(--text-primary); }
.btn-secondary:hover { background: #d1d1d6; }

.btn-warning { background: #fff3cd; color: #856404; border: 1px solid #ffeeba; }
.btn-warning:hover { background: #ffe8a1; }

.btn-info { background: #e0f2fe; color: #0369a1; border: 1px solid #bae6fd; }
.btn-info:hover { background: #bae6fd; }

.btn-success { background: var(--success-color); color: #fff; }
.btn-success:hover { background: #2fb350; }

.btn-large {
  padding: 14px 24px;
  font-size: 1.05rem;
  width: 100%;
}

.instructions {
  background: #f8f9fa;
  padding: 14px;
  border-radius: 12px;
  font-size: 0.85rem;
}

.instructions ul {
  padding-left: 20px;
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--text-secondary);
}

/* Board Area */
.board-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 0;
  overflow: visible;
}

.board-header {
  margin-bottom: 16px;
  font-weight: 700;
  color: var(--text-primary);
  text-align: center;
  width: 100%;
}

.goal-text {
  display: block;
  line-height: 1.4;
}

.grid-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  /* EXITゲート分の余白を確保 */
  padding-right: calc(var(--exit-width) + 4px);
  max-width: 100%;
}

.exit-gate-indicator {
  position: absolute;
  right: 0;
  top: calc(2 * (var(--cell-size) + var(--grid-gap)) + var(--grid-gap));
  height: var(--cell-size);
  width: var(--exit-width);
  background: linear-gradient(135deg, #22c55e, #16a34a);
  color: #fff;
  font-weight: 900;
  font-size: clamp(0.65rem, 2.2vw, 0.8rem);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0 10px 10px 0;
  box-shadow: 2px 2px 8px rgba(0,0,0,0.15);
  animation: pulse-gate 2s infinite ease-in-out;
  writing-mode: horizontal-tb;
  text-align: center;
  padding: 0 2px;
  line-height: 1.1;
}

@keyframes pulse-gate {
  0%, 100% { transform: scaleX(1); }
  50% { transform: scaleX(1.08); }
}

.game-board {
  position: relative;
  width: calc(6 * var(--cell-size) + 7 * var(--grid-gap));
  height: calc(6 * var(--cell-size) + 7 * var(--grid-gap));
  background: #2b2d42;
  border-radius: 16px;
  padding: var(--grid-gap);
  display: grid;
  grid-template-columns: repeat(6, var(--cell-size));
  grid-template-rows: repeat(6, var(--cell-size));
  gap: var(--grid-gap);
  box-shadow: inset 0 4px 12px rgba(0,0,0,0.4), 0 10px 30px rgba(0,0,0,0.15);
  user-select: none;
  touch-action: none;
}

.grid-cell {
  background: #3d405b;
  border-radius: 8px;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.2);
}

.vehicle {
  position: absolute;
  border-radius: 12px;
  cursor: grab;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #fff;
  text-shadow: 0 1px 3px rgba(0,0,0,0.5);
  box-shadow: 0 4px 10px rgba(0,0,0,0.25), inset 0 2px 2px rgba(255,255,255,0.3);
  transition: transform 0.15s cubic-bezier(0.2, 0, 0.1, 1), box-shadow 0.15s;
  z-index: 10;
}

.vehicle:active {
  cursor: grabbing;
  box-shadow: 0 8px 20px rgba(0,0,0,0.35);
  z-index: 20;
}

.vehicle.is-target {
  background: linear-gradient(135deg, #ff3b30, #dc2626) !important;
  border: 3px solid #fef08a;
  box-shadow: 0 0 15px rgba(239, 68, 68, 0.6), 0 4px 10px rgba(0,0,0,0.3);
}

.vehicle-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  width: 100%;
  height: 100%;
  padding: 4px;
  font-size: clamp(0.55rem, 2.5vw, 0.85rem);
  pointer-events: none;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Modals */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 100;
  justify-content: center;
  align-items: center;
  padding: max(12px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right)) max(12px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.modal.active {
  display: flex;
}

.modal-content {
  width: 100%;
  max-width: 480px;
  max-height: min(90vh, 90dvh);
  overflow-y: auto;
  animation: modal-pop 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal-large {
  max-width: 720px;
}

@keyframes modal-pop {
  0% { transform: scale(0.8); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.close-btn {
  background: none;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: var(--text-secondary);
}

.clear-message {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--success-color);
  text-align: center;
  margin-bottom: 16px;
}

.clear-stats {
  background: #f8f9fa;
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.clear-stat-item {
  display: flex;
  justify-content: space-between;
  font-size: 1rem;
  font-weight: 600;
}

.valueHighlight {
  color: var(--primary-color);
  font-size: 1.2rem;
  font-weight: 900;
}

.save-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.save-form label {
  font-weight: 700;
  font-size: 0.9rem;
}

.save-form input {
  padding: 12px;
  border: 2px solid #e5e5ea;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
}

.modal-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.modal-footer .btn {
  flex: 1 1 140px;
}

.status-msg {
  margin-top: 10px;
  font-size: 0.9rem;
  font-weight: 700;
  text-align: center;
}

.status-msg.success { color: var(--success-color); }
.status-msg.error { color: var(--danger-color); }

/* Table */
.table-container {
  max-height: min(380px, 50vh);
  overflow: auto;
  margin-top: 16px;
  border: 1px solid #e5e5ea;
  border-radius: 8px;
  -webkit-overflow-scrolling: touch;
}

.records-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.records-table th, .records-table td {
  padding: 10px 14px;
  border-bottom: 1px solid #e5e5ea;
  white-space: nowrap;
}

.records-table th {
  background: #f8f9fa;
  position: sticky;
  top: 0;
  font-weight: 700;
}

.records-table tr:hover {
  background: #f1f5f9;
}

.leaderboard-filter {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-weight: 700;
}

.leaderboard-filter select {
  padding: 8px 12px;
  border-radius: 8px;
  border: 2px solid #e5e5ea;
  font-size: 0.9rem;
  flex: 1 1 160px;
  min-width: 0;
  max-width: 100%;
}

/* ========== Responsive ========== */
@media (max-width: 860px) {
  .game-layout {
    grid-template-columns: 1fr;
  }

  /* スマホでは盤面を先に見せる */
  .board-area {
    order: -1;
  }

  .app-header {
    padding: 14px 16px;
  }

  .logo-area h1 {
    font-size: 1.25rem;
  }

  .user-bar {
    width: 100%;
  }

  .user-bar input {
    max-width: none;
  }
}

@media (max-width: 560px) {
  :root {
    --page-pad: 10px;
    --card-pad: 14px;
    --border-radius: 12px;
    --grid-gap: 5px;
    --exit-width: 36px;
  }

  .logo-area h1 {
    font-size: 1.1rem;
  }

  .logo-area h1 span {
    font-size: 0.7rem;
    width: 100%;
  }

  .db-status-badge {
    font-size: 0.7rem;
    padding: 3px 8px;
  }

  .panel-section h2,
  .panel-section h3 {
    font-size: 1rem;
  }

  .pattern-selector-group {
    gap: 6px;
  }

  .pattern-selector-group .btn {
    padding: 10px 12px;
    flex-shrink: 0;
  }

  .pattern-selector-group .btn-text {
    display: none;
  }

  .pattern-selector-group select {
    font-size: 0.8rem;
    padding: 10px 6px;
  }

  .stat-value {
    font-size: 1.25rem;
  }

  .btn {
    padding: 12px 14px;
    font-size: 0.9rem;
  }

  .board-header {
    font-size: 0.85rem;
    margin-bottom: 12px;
  }

  .game-board {
    border-radius: 12px;
  }

  .grid-cell {
    border-radius: 6px;
  }

  .vehicle {
    border-radius: 8px;
  }

  .vehicle.is-target {
    border-width: 2px;
  }

  .instructions {
    font-size: 0.8rem;
    padding: 12px;
  }

  .modal-header h2 {
    font-size: 1.2rem;
  }

  .btn-large {
    font-size: 0.95rem;
    padding: 12px 16px;
  }

  .clear-stat-item {
    font-size: 0.9rem;
  }

  .records-table {
    font-size: 0.8rem;
  }

  .records-table th,
  .records-table td {
    padding: 8px 10px;
  }
}

@media (max-width: 380px) {
  :root {
    --exit-width: 30px;
    --grid-gap: 4px;
  }

  .exit-gate-indicator {
    font-size: 0.55rem;
  }

  .pattern-info {
    flex-wrap: wrap;
    gap: 8px;
  }
}

/* タッチ操作向け: ホバー依存を弱める */
@media (hover: none) {
  .btn:hover {
    filter: none;
  }

  .btn:active {
    transform: scale(0.98);
    opacity: 0.92;
  }

  .records-table tr:hover {
    background: transparent;
  }
}