:root {
  --bg: #0b1220;
  --bg-panel: #131c2e;
  --bg-panel-2: #1a2540;
  --border: #2a3a5c;
  --text: #e7edf7;
  --text-dim: #92a1c0;
  --accent: #4ad9c8;
  --accent-strong: #2fe3b0;
  --danger: #e0546b;
  --player: #4a90d9;
  --enemy: #d9524a;
  --tank: #4a90d9;
  --attacker: #d9524a;
  --support: #4ad98a;
  --king: #e3b23c;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
  width: 100%;
}

img, svg, canvas { max-width: 100%; height: auto; }

#app { min-height: 100vh; }

.screen { display: none; padding: 24px; max-width: 1200px; margin: 0 auto; }
.screen.active { display: block; }

h1, h2, h3 { margin: 0 0 8px; }

.btn {
  border: 1px solid var(--border);
  background: var(--bg-panel-2);
  color: var(--text);
  padding: 10px 18px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  transition: background .15s, border-color .15s, opacity .15s;
}
.btn:hover { border-color: var(--accent); }
.btn:disabled { opacity: .4; cursor: not-allowed; }
.btn-primary { background: linear-gradient(180deg, var(--accent-strong), #17a58a); border-color: #17a58a; color: #06231c; font-weight: 700; }
.btn-danger { background: linear-gradient(180deg, #e0546b, #a83248); border-color: #a83248; color: #2a0812; font-weight: 700; }
.btn-ghost { background: transparent; }
.btn-large { padding: 14px 28px; font-size: 16px; border-radius: 10px; }

/* ---- タイトル ---- */
#screen-title { display: none; }
#screen-title.active {
  display: flex; align-items: center; justify-content: center; min-height: 100vh;
  background: radial-gradient(ellipse at center, #17233d 0%, #0b1220 70%);
}
.title-box { text-align: center; }
.game-title {
  font-size: 48px; letter-spacing: 4px; margin-bottom: 12px;
  background: linear-gradient(180deg, #fff, var(--accent));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.tagline { color: var(--text-dim); margin-bottom: 32px; font-size: 15px; }

/* ---- 共通ヘッダー ---- */
.screen-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }

/* ---- カスタマイズ画面 ---- */
.customize-layout { display: grid; grid-template-columns: 240px 1fr; gap: 20px; align-items: start; }
.slot-panel {
  background: var(--bg-panel); border: 1px solid var(--border); border-radius: 12px; padding: 16px;
  position: sticky; top: 16px;
}
.text-input {
  width: 100%; padding: 8px 10px; margin: 8px 0; border-radius: 6px;
  border: 1px solid var(--border); background: var(--bg); color: var(--text); font-size: 14px;
}
.slot-list { display: flex; flex-direction: column; gap: 6px; max-height: 260px; overflow-y: auto; margin-bottom: 10px; }
.slot-item {
  display: flex; justify-content: space-between; align-items: center; gap: 6px;
  padding: 8px 10px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg-panel-2);
  cursor: pointer; font-size: 13px;
}
.slot-item:hover { border-color: var(--accent); }
.slot-item.active { border-color: var(--accent-strong); background: #14382f; }
.slot-item .slot-del { color: var(--text-dim); background: none; border: none; cursor: pointer; font-size: 14px; padding: 2px 6px; }
.slot-item .slot-del:hover { color: var(--danger); }
.slot-actions { display: flex; gap: 8px; }
.slot-actions .btn { flex: 1; padding: 8px; font-size: 13px; }
.hint { font-size: 11px; color: var(--text-dim); margin-top: 10px; line-height: 1.6; }

.king-card {
  background: linear-gradient(135deg, #2a2210, #1a2540); border: 1px solid var(--king); border-radius: 12px;
  padding: 14px 16px; margin-bottom: 16px; display: flex; gap: 20px; align-items: center; flex-wrap: wrap;
}
.king-card .king-badge {
  font-weight: 700; color: var(--king); border: 1px solid var(--king); border-radius: 6px; padding: 4px 10px; font-size: 13px;
}
.king-card .king-stats { display: flex; gap: 14px; flex-wrap: wrap; font-size: 12px; color: var(--text-dim); }
.king-card .king-stats b { color: var(--text); }
.king-card .king-note { font-size: 11px; color: var(--text-dim); width: 100%; }

.robot-tabs { display: flex; gap: 8px; margin-bottom: 14px; }
.robot-tab {
  flex: 1; padding: 10px; border-radius: 10px; border: 1px solid var(--border); background: var(--bg-panel);
  cursor: pointer; text-align: center; font-size: 13px;
}
.robot-tab.active { border-color: var(--accent-strong); background: var(--bg-panel-2); box-shadow: 0 0 0 1px var(--accent-strong) inset; }
.robot-tab .role-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; }

.robot-editor { background: var(--bg-panel); border: 1px solid var(--border); border-radius: 12px; padding: 18px; }
.editor-row { margin-bottom: 20px; }
.editor-row > label, .editor-section-title { display: block; font-size: 13px; color: var(--text-dim); margin-bottom: 8px; text-transform: uppercase; letter-spacing: .5px; }

.name-input { font-size: 16px; font-weight: 700; }

.role-select { display: flex; gap: 10px; }
.role-btn {
  flex: 1; padding: 10px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg-panel-2);
  cursor: pointer; text-align: center; font-size: 13px; color: var(--text-dim);
}
.role-btn.active { color: var(--text); font-weight: 700; }
.role-btn[data-role="tank"].active { border-color: var(--tank); box-shadow: 0 0 0 1px var(--tank) inset; }
.role-btn[data-role="attacker"].active { border-color: var(--attacker); box-shadow: 0 0 0 1px var(--attacker) inset; }
.role-btn[data-role="support"].active { border-color: var(--support); box-shadow: 0 0 0 1px var(--support) inset; }
.role-desc { font-size: 12px; color: var(--text-dim); margin-top: 6px; }

.stat-grid { display: flex; flex-direction: column; gap: 10px; }
.stat-row { display: grid; grid-template-columns: 70px 1fr 120px 60px; align-items: center; gap: 10px; }
.stat-row .stat-label { font-size: 13px; }
.stat-row input[type="range"] { width: 100%; accent-color: var(--accent-strong); }
.stat-row .stat-value { font-size: 13px; color: var(--text-dim); text-align: right; }
.stat-total { margin-top: 6px; font-size: 13px; }
.stat-total.ok { color: var(--accent-strong); }
.stat-total.bad { color: var(--danger); }
.stat-bar-preview { display: flex; gap: 3px; margin-top: 4px; }
.stat-bar-preview i { flex: 1; height: 5px; border-radius: 3px; background: var(--border); }
.stat-bar-preview i.on { background: var(--accent-strong); }

.equip-toggle { display: flex; gap: 10px; margin-bottom: 12px; }
.equip-btn {
  flex: 1; padding: 10px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg-panel-2);
  cursor: pointer; text-align: center; font-size: 13px;
}
.equip-btn.active { border-color: var(--accent-strong); box-shadow: 0 0 0 1px var(--accent-strong) inset; font-weight: 700; }

.weapon-preview { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 10px; font-size: 12px; color: var(--text-dim); background: var(--bg); border-radius: 8px; padding: 10px 12px; }
.weapon-preview b { color: var(--text); }

.skill-list { display: flex; flex-direction: column; gap: 8px; }
.skill-item {
  padding: 10px 12px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg-panel-2); cursor: pointer;
}
.skill-item.active { border-color: var(--accent-strong); box-shadow: 0 0 0 1px var(--accent-strong) inset; }
.skill-item .skill-name { font-weight: 700; font-size: 13px; }
.skill-item .skill-desc { font-size: 12px; color: var(--text-dim); margin-top: 2px; }

.action-grid { display: flex; flex-direction: column; gap: 8px; }
.action-item {
  padding: 10px 12px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg-panel-2); cursor: pointer;
}
.action-item.active { border-color: var(--accent-strong); box-shadow: 0 0 0 1px var(--accent-strong) inset; }
.action-item .action-name { font-weight: 700; font-size: 13px; }
.action-item .action-desc { font-size: 12px; color: var(--text-dim); margin-top: 2px; }

.customize-footer { display: flex; justify-content: flex-end; align-items: center; gap: 16px; margin-top: 20px; }
.validation-message { color: var(--danger); font-size: 13px; flex: 1; white-space: pre-line; }

/* ---- CPU LEVEL選択 ---- */
.level-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.level-card {
  background: var(--bg-panel); border: 1px solid var(--border); border-radius: 12px; padding: 18px; cursor: pointer;
  transition: border-color .15s, transform .15s;
}
.level-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.level-card.cleared { border-color: var(--accent-strong); }
.level-card.locked { opacity: .5; cursor: not-allowed; }
.level-card .level-num { font-size: 28px; font-weight: 800; color: var(--accent); }
.level-card .level-name { font-size: 14px; font-weight: 700; margin: 4px 0; }
.level-card .level-desc { font-size: 12px; color: var(--text-dim); line-height: 1.6; }
.level-card .level-cleared-badge { display: inline-block; margin-top: 8px; font-size: 11px; color: var(--accent-strong); border: 1px solid var(--accent-strong); border-radius: 4px; padding: 2px 8px; }

/* ---- 戦闘画面 ---- */
#screen-battle.active { display: flex; flex-direction: column; align-items: center; }
.battle-hud { display: flex; justify-content: space-between; align-items: flex-start; width: 960px; max-width: 100%; margin-bottom: 10px; gap: 10px; }
.hud-team { flex: 1; display: flex; flex-direction: column; gap: 6px; }
.hud-team-enemy { align-items: flex-end; }
.hud-unit { display: flex; align-items: center; gap: 8px; font-size: 12px; width: 100%; max-width: 260px; }
.hud-team-enemy .hud-unit { flex-direction: row-reverse; }
.hud-unit .hud-name { width: 70px; flex-shrink: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hud-unit .hud-bar { flex: 1; height: 8px; background: var(--bg-panel-2); border-radius: 4px; overflow: hidden; border: 1px solid var(--border); }
.hud-unit .hud-bar-fill { height: 100%; background: var(--player); transition: width .15s; }
.hud-team-enemy .hud-bar-fill { background: var(--enemy); }
.hud-unit.is-king .hud-bar-fill { background: var(--king); }
.hud-unit.dead { opacity: .3; }
.battle-center { text-align: center; min-width: 140px; }
.battle-level { font-size: 12px; color: var(--text-dim); }
.battle-timer { font-size: 22px; font-weight: 800; font-variant-numeric: tabular-nums; }

.battle-field-wrap { border: 1px solid var(--border); border-radius: 12px; overflow: hidden; box-shadow: 0 0 40px rgba(74,217,200,.08); }
#battle-canvas { display: block; background: #0e1626; }
.battle-controls { display: flex; gap: 10px; margin-top: 12px; }

/* ---- 結果画面 ---- */
#screen-result.active { display: flex; justify-content: center; }
.result-box { max-width: 760px; width: 100%; }
.result-title { font-size: 34px; text-align: center; letter-spacing: 2px; }
.result-title.victory { color: var(--accent-strong); }
.result-title.defeat { color: var(--danger); }
.result-summary { display: flex; justify-content: center; gap: 24px; flex-wrap: wrap; color: var(--text-dim); font-size: 13px; margin: 12px 0 20px; }
.result-summary b { color: var(--text); }
.result-table-wrap { overflow-x: auto; }
.result-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.result-table th, .result-table td { padding: 8px 10px; border-bottom: 1px solid var(--border); text-align: right; }
.result-table th:first-child, .result-table td:first-child { text-align: left; }
.result-table thead th { color: var(--text-dim); font-weight: 600; font-size: 12px; }
.result-table tr.row-dead { opacity: .5; }
.result-table tr.row-king td:first-child { color: var(--king); font-weight: 700; }
.result-actions { display: flex; justify-content: center; gap: 12px; margin-top: 24px; flex-wrap: wrap; }

/* ==== レスポンシブ(スマホ縦画面向け) ==== */
.battle-field-wrap { max-width: 100%; }

@media (max-width: 760px) {
  .screen { padding: 14px; }

  .game-title { font-size: 30px; letter-spacing: 2px; }
  .tagline { font-size: 13px; margin-bottom: 22px; }
  .btn-large { padding: 12px 20px; font-size: 15px; }

  .screen-header { flex-wrap: wrap; gap: 8px; }
  .screen-header h2 { font-size: 18px; }

  /* カスタマイズ画面: サイドバーを上に積む1カラムレイアウトへ */
  .customize-layout { grid-template-columns: 1fr; gap: 14px; }
  .slot-panel { position: static; }
  .slot-list { max-height: 160px; }

  .king-card { padding: 12px; gap: 10px; }
  .king-card .king-stats { gap: 10px; font-size: 11px; }

  .robot-tabs { gap: 6px; }
  .robot-tab { padding: 8px 4px; font-size: 12px; }

  .robot-editor { padding: 12px; }
  .editor-row { margin-bottom: 16px; }

  .role-select, .equip-toggle { flex-wrap: wrap; }
  .role-btn, .equip-btn { min-width: 30%; font-size: 12px; padding: 9px 4px; }

  /* ステータス行: バーのプレビューは省略して省スペース化 */
  .stat-row { grid-template-columns: 52px 1fr 44px; column-gap: 6px; }
  .stat-row .stat-bar-preview { display: none; }
  .stat-row .stat-label { font-size: 12px; }
  .stat-row .stat-value { font-size: 12px; }

  .weapon-preview { gap: 8px 14px; font-size: 11px; padding: 8px 10px; }

  .customize-footer { flex-direction: column-reverse; align-items: stretch; gap: 10px; }
  .customize-footer .btn-large { width: 100%; }

  .level-list { grid-template-columns: 1fr; }

  /* 戦闘画面: HUDは幅いっぱいまで縮め、キャンバスはCSSで縦幅に合わせて自動縮小 */
  .battle-hud { width: 100%; gap: 6px; }
  .hud-unit { max-width: none; font-size: 10px; gap: 5px; }
  .hud-unit .hud-name { width: 46px; font-size: 10px; }
  .hud-unit .hud-bar { height: 6px; }
  .battle-center { min-width: 70px; }
  .battle-timer { font-size: 17px; }
  .battle-level { font-size: 10px; }
  .battle-controls { width: 100%; }
  .battle-controls .btn { flex: 1; font-size: 12px; padding: 9px 6px; }

  .result-title { font-size: 26px; }
  .result-summary { gap: 10px 16px; font-size: 12px; }
  .result-table { font-size: 11px; }
  .result-table th, .result-table td { padding: 6px 6px; }
  .result-actions .btn { flex: 1 1 auto; }
}

@media (max-width: 380px) {
  .role-btn, .equip-btn { min-width: 100%; }
  .stat-row { grid-template-columns: 46px 1fr 38px; }
}