:root {
  --player-blue: #2f7fe0;
  --player-cyan: #7fe8ff;
  --player-steel: #9fb3c8;
  --player-silver: #e7eef5;
  --enemy-red: #d43a34;
  --enemy-dark-red: #7a1414;
  --enemy-black: #201a18;
  --enemy-orange: #ff8a3d;
  --gold: #ffd166;
  --bg-0: #0b1220;
  --bg-1: #121b2e;
  --panel: #16233b;
  --panel-2: #1c2c4a;
  --border: rgba(255,255,255,0.08);
  --text: #eaf1fb;
  --text-dim: #a9bcd6;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
  --font: 'Poppins', 'Segoe UI', system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  background: radial-gradient(1200px 800px at 50% -10%, #1a2740 0%, var(--bg-0) 55%, #060a12 100%);
  color: var(--text);
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}
button { font-family: inherit; }
img { max-width: 100%; display: block; }

.app { position: fixed; inset: 0; width: 100vw; height: 100vh; height: 100dvh; overflow: hidden; z-index: 1; }

/* ---------- Topbar ---------- */
.topbar {
  position: absolute; top: 0; left: 0; right: 0; z-index: 30;
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px; background: linear-gradient(180deg, rgba(8,12,22,0.92), rgba(8,12,22,0.55));
  border-bottom: 1px solid var(--border); backdrop-filter: blur(6px);
}
.topbar.menu-mode { background: transparent; border-bottom-color: transparent; backdrop-filter: none; }
.topbar.menu-mode .topbar-stat { display: none; }
.topbar-stat { display: flex; align-items: center; gap: 6px; font-weight: 700; font-size: 14px; margin-right: 14px; }
.topbar-stat .ico { font-size: 16px; }
.topbar-actions { display: flex; gap: 8px; margin-left: auto; }
.icon-btn {
  width: 34px; height: 34px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--panel-2); color: var(--text); font-size: 15px; cursor: pointer;
  display: flex; align-items: center; justify-content: center; transition: transform .12s, background .2s;
}
.icon-btn:hover { background: #24365a; }
.icon-btn:active { transform: scale(0.92); }
.icon-btn:focus-visible, .btn:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--player-cyan); outline-offset: 2px;
}

/* ---------- Screens ---------- */
#screens { position: absolute; inset: 0; }
.screen {
  position: absolute; inset: 0; display: none; flex-direction: column;
  padding: 16px; padding-top: 64px; overflow-y: auto;
}
.screen.active { display: flex; animation: fadeIn .25s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px);} to { opacity: 1; transform: translateY(0);} }

/* ---------- Buttons ---------- */
.btn {
  border: none; border-radius: 14px; padding: 13px 22px; font-weight: 700; font-size: 15px;
  cursor: pointer; color: var(--text); letter-spacing: .3px; transition: transform .12s, filter .15s, box-shadow .15s;
  box-shadow: 0 4px 0 rgba(0,0,0,0.25), 0 8px 18px rgba(0,0,0,0.25);
}
.btn:active { transform: translateY(2px); box-shadow: 0 2px 0 rgba(0,0,0,0.25); }
.btn-primary { background: linear-gradient(180deg, #4fa3ff, #2f7fe0); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-secondary { background: linear-gradient(180deg, #2c3f60, #1c2c4a); border: 1px solid var(--border); }
.btn-secondary:hover { filter: brightness(1.15); }
.btn-text { background: transparent; box-shadow: none; color: var(--text-dim); padding: 10px; }
.btn-text:hover { color: var(--text); }
.btn-lg { font-size: 17px; padding: 16px 28px; width: 100%; }
.btn[disabled] { opacity: .45; cursor: not-allowed; filter: none; }

/* ---------- Menu ---------- */
#screen-menu { align-items: center; justify-content: center; text-align: center; }
.menu-panel { max-width: 420px; width: 100%; }
.game-logo {
  font-size: clamp(34px, 9vw, 56px); font-weight: 800; letter-spacing: 2px; margin: 0 0 6px;
  background: linear-gradient(180deg, var(--player-silver), var(--player-cyan));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  text-shadow: 0 0 40px rgba(127,232,255,0.35);
  line-height: 1.05;
}
.game-logo span { display: block; font-size: 0.5em; color: var(--enemy-orange); background: none; -webkit-text-fill-color: var(--enemy-orange); letter-spacing: 8px; }
.tagline { color: var(--text-dim); margin: 0 0 26px; font-size: 15px; }
.menu-buttons { display: flex; flex-direction: column; gap: 12px; }
.menu-footer { margin-top: 22px; color: var(--text-dim); font-size: 13px; }

/* ---------- Panel header ---------- */
.panel-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.panel-header h2 { margin: 0; font-size: 20px; }
.gold-display { font-weight: 700; color: var(--gold); background: var(--panel-2); padding: 8px 14px; border-radius: 12px; border: 1px solid var(--border); }

/* ---------- Army setup ---------- */
.capacity-bar { position: relative; width: 180px; height: 22px; background: var(--panel-2); border-radius: 999px; overflow: hidden; border: 1px solid var(--border); }
.capacity-fill { height: 100%; width: 0%; background: linear-gradient(90deg, var(--player-blue), var(--player-cyan)); transition: width .3s; }
.capacity-bar span { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-size: 11px; font-weight: 700; }
.army-columns { display: grid; grid-template-columns: 1.4fr 1fr; gap: 16px; flex: 1; min-height: 0; }
.unit-roster { display: flex; flex-direction: column; gap: 8px; overflow-y: auto; padding-right: 4px; }
.unit-card {
  display: flex; align-items: center; gap: 10px; background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 8px 10px;
}
.unit-card.locked { opacity: .4; }
.unit-icon {
  width: 40px; height: 40px; border-radius: 10px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 18px;
  background: linear-gradient(180deg, var(--player-blue), #1a4f8f); border: 1px solid rgba(255,255,255,0.2);
}
.unit-info { flex: 1; min-width: 0; }
.unit-name { font-weight: 700; font-size: 13px; }
.unit-meta { font-size: 11px; color: var(--text-dim); display: flex; gap: 8px; flex-wrap: wrap; }
.stepper { display: flex; align-items: center; gap: 6px; }
.stepper button {
  width: 26px; height: 26px; border-radius: 8px; border: 1px solid var(--border); background: var(--panel-2);
  color: var(--text); font-weight: 700; cursor: pointer;
}
.stepper button:active { transform: scale(0.9); }
.stepper .qty { min-width: 22px; text-align: center; font-weight: 700; }
.army-side { display: flex; flex-direction: column; gap: 10px; }
.army-side h3 { margin: 0 0 2px; font-size: 14px; color: var(--text-dim); }
.hero-slots { display: flex; gap: 8px; flex-wrap: wrap; }
.hero-chip {
  display: flex; align-items: center; gap: 6px; padding: 8px 10px; border-radius: 12px;
  background: var(--panel); border: 2px solid var(--border); cursor: pointer; font-size: 12px; font-weight: 700;
}
.hero-chip.selected { border-color: var(--gold); background: #2a2410; }
.hero-chip.locked { opacity: .35; cursor: not-allowed; }
.power-display { display: flex; align-items: center; justify-content: space-between; background: var(--panel); border-radius: var(--radius-sm); padding: 10px 14px; border: 1px solid var(--border); }
.power-display strong { color: var(--gold); font-size: 17px; }

/* ---------- Upgrade screen ---------- */
.upgrade-tabs { display: flex; gap: 6px; overflow-x: auto; margin-bottom: 10px; padding-bottom: 4px; }
.upgrade-tab { padding: 8px 12px; border-radius: 10px; background: var(--panel-2); border: 1px solid var(--border); color: var(--text-dim); font-size: 12px; font-weight: 700; cursor: pointer; white-space: nowrap; }
.upgrade-tab.active { background: linear-gradient(180deg, #4fa3ff, #2f7fe0); color: #fff; }
.upgrade-list, .hero-upgrade-list { display: flex; flex-direction: column; gap: 8px; overflow-y: auto; }
.upgrade-row {
  display: flex; align-items: center; gap: 12px; background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px;
}
.upgrade-row .upgrade-icon { font-size: 22px; }
.upgrade-row .upgrade-info { flex: 1; min-width: 0; }
.upgrade-row .upgrade-name { font-weight: 700; font-size: 14px; }
.upgrade-row .upgrade-desc { font-size: 11.5px; color: var(--text-dim); }
.upgrade-row .upgrade-level { font-size: 11px; color: var(--player-cyan); font-weight: 700; }
.buy-btn { padding: 9px 14px; border-radius: 10px; border: none; font-weight: 700; cursor: pointer; background: linear-gradient(180deg, #ffe27a, var(--gold)); color: #3a2b00; white-space: nowrap; }
.buy-btn[disabled] { background: var(--panel-2); color: var(--text-dim); cursor: not-allowed; }
.hero-upgrade-row { display: flex; align-items: center; gap: 12px; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px; }
.hero-xp-bar { flex: 1; height: 10px; background: var(--panel-2); border-radius: 999px; overflow: hidden; }
.hero-xp-fill { height: 100%; background: linear-gradient(90deg, #8bffb0, #35d488); }

/* ---------- Battle screen ---------- */
#screen-battle { padding: 0; padding-top: 56px; }
.battle-hud {
  position: absolute; top: 56px; left: 0; right: 0; z-index: 20; display: flex; align-items: center;
  justify-content: space-between; padding: 8px 14px; pointer-events: none;
}
.power-bar { display: flex; flex-direction: column; align-items: center; background: rgba(8,12,22,0.7); border-radius: 12px; padding: 6px 14px; min-width: 84px; backdrop-filter: blur(4px); }
.power-bar .power-label { font-size: 10px; letter-spacing: 1px; color: var(--text-dim); }
.power-player strong { color: var(--player-cyan); font-size: 16px; }
.power-enemy strong { color: var(--enemy-orange); font-size: 16px; }
.battle-stage-name { font-weight: 700; font-size: 13px; background: rgba(8,12,22,0.7); padding: 6px 14px; border-radius: 12px; backdrop-filter: blur(4px); }
#battle-canvas { position: absolute; inset: 0; top: 56px; width: 100%; height: calc(100% - 56px); display: block; touch-action: none; }
.battle-countdown {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; z-index: 25;
  font-size: 90px; font-weight: 800; color: #fff; text-shadow: 0 0 30px rgba(255,255,255,0.6); pointer-events: none;
}
.battle-countdown.hidden { display: none; }
.battle-tutorial {
  position: absolute; z-index: 22; background: rgba(8,12,22,0.9); border: 1px solid var(--player-cyan); color: #fff;
  padding: 10px 16px; border-radius: 12px; font-size: 13px; font-weight: 600; max-width: 240px; text-align: center;
  box-shadow: 0 0 20px rgba(127,232,255,0.25);
}
.battle-tutorial.hidden { display: none; }
.battle-controls {
  position: absolute; bottom: 14px; left: 0; right: 0; z-index: 31; display: flex; align-items: center;
  justify-content: center; gap: 14px; padding: 0 14px;
}
.speed-controls { display: flex; background: rgba(8,12,22,0.7); border-radius: 12px; padding: 4px; gap: 4px; backdrop-filter: blur(4px); }
.speed-btn { padding: 8px 14px; border-radius: 9px; border: none; background: transparent; color: var(--text-dim); font-weight: 700; cursor: pointer; }
.speed-btn.active { background: linear-gradient(180deg, #4fa3ff, #2f7fe0); color: #fff; }
.speed-btn[disabled] { opacity: .3; cursor: not-allowed; }

/* ---------- Victory / Defeat ---------- */
#screen-victory, #screen-defeat { align-items: center; justify-content: center; }
.result-panel {
  max-width: 420px; width: 100%; background: var(--panel); border-radius: 22px; padding: 28px 24px; text-align: center;
  border: 1px solid var(--border); box-shadow: var(--shadow); position: relative; z-index: 2;
}
.result-victory { border-top: 4px solid var(--gold); }
.result-defeat { border-top: 4px solid var(--enemy-red); }
.result-title { font-size: 30px; margin: 0 0 6px; letter-spacing: 1px; }
.result-victory .result-title { color: var(--gold); text-shadow: 0 0 24px rgba(255,209,102,0.4); }
.result-defeat .result-title { color: var(--enemy-orange); }
.reward-row { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin: 16px 0; }
.reward-chip { background: var(--panel-2); border-radius: 999px; padding: 8px 14px; font-weight: 700; font-size: 13px; border: 1px solid var(--border); }
.stat-row { display: flex; justify-content: space-around; margin: 14px 0; font-size: 12px; color: var(--text-dim); }
.stat-row strong { display: block; font-size: 18px; color: var(--text); }
.defeat-reset-note { font-size: 12px; color: var(--text-dim); margin: 4px 0 0; }
.result-buttons { display: flex; flex-direction: column; gap: 10px; margin-top: 10px; }
.confetti-canvas { position: absolute; inset: 0; pointer-events: none; z-index: 1; }

/* ---------- Leaderboard ---------- */
.leaderboard-your-rank { background: var(--panel-2); border-radius: var(--radius-sm); padding: 10px 14px; margin-bottom: 10px; font-weight: 700; font-size: 13px; }
.leaderboard-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.leaderboard-table th { text-align: left; color: var(--text-dim); font-size: 11px; padding: 8px; border-bottom: 1px solid var(--border); }
.leaderboard-table td { padding: 9px 8px; border-bottom: 1px solid var(--border); }
.leaderboard-table tr.you { background: rgba(127,232,255,0.08); }
.rank-1 { color: var(--gold); font-weight: 800; }
.rank-2 { color: #d5dbe6; font-weight: 800; }
.rank-3 { color: #e0a56a; font-weight: 800; }
.pagination { display: flex; gap: 6px; justify-content: center; margin: 12px 0; flex-wrap: wrap; }
.pagination button { width: 32px; height: 32px; border-radius: 8px; border: 1px solid var(--border); background: var(--panel-2); color: var(--text); cursor: pointer; }
.pagination button.active { background: var(--player-blue); }

/* ---------- Modals ---------- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(4,6,12,0.72); display: flex; align-items: center; justify-content: center;
  z-index: 50; padding: 16px; backdrop-filter: blur(3px);
}
.modal-overlay.hidden { display: none; }
.modal-box { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; width: 100%; max-width: 360px; box-shadow: var(--shadow); }
.modal-wide { max-width: 480px; }
.modal-box h3 { margin: 0 0 6px; }
.modal-box p { color: var(--text-dim); font-size: 13px; margin: 0 0 12px; }
#nickname-input, .modal-box input[type="text"] {
  width: 100%; padding: 12px 14px; border-radius: 10px; border: 1px solid var(--border); background: var(--bg-0);
  color: var(--text); font-size: 15px; margin-bottom: 6px;
}
.input-hint { font-size: 11px; }
.modal-buttons { display: flex; gap: 10px; margin-top: 10px; }
.modal-error { color: var(--enemy-orange); font-size: 12px; min-height: 16px; }
.switch-row { display: flex; align-items: center; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.switch-row select { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); border-radius: 8px; padding: 6px 8px; }
.achievements-list { display: flex; flex-direction: column; gap: 8px; max-height: 50vh; overflow-y: auto; margin-bottom: 12px; }
.achievement-row { display: flex; align-items: center; gap: 10px; background: var(--panel-2); border-radius: 10px; padding: 10px 12px; }
.achievement-row.unlocked { border-left: 3px solid var(--gold); }
.achievement-row.locked { opacity: .45; }
.daily-reward-row { display: flex; gap: 6px; justify-content: center; margin: 14px 0; flex-wrap: wrap; }
.daily-day { width: 52px; padding: 8px 4px; border-radius: 10px; background: var(--panel-2); text-align: center; font-size: 11px; font-weight: 700; border: 1px solid var(--border); }
.daily-day.today { border-color: var(--gold); background: #2a2410; }
.daily-day.claimed { opacity: .4; }

/* ---------- Toasts ---------- */
.toast-container { position: fixed; top: 70px; right: 14px; z-index: 60; display: flex; flex-direction: column; gap: 8px; }
.toast {
  background: var(--panel); border: 1px solid var(--gold); border-radius: 12px; padding: 10px 14px; font-size: 13px;
  font-weight: 700; box-shadow: var(--shadow); animation: toastIn .25s ease, toastOut .3s ease 3.2s forwards; max-width: 260px;
}
@keyframes toastIn { from { opacity: 0; transform: translateX(30px);} to { opacity: 1; transform: translateX(0);} }
@keyframes toastOut { to { opacity: 0; transform: translateX(30px);} }

/* ---------- Orientation hint ---------- */
.orientation-hint { display: none; position: fixed; inset: 0; z-index: 999; background: var(--bg-0); color: var(--text); align-items: center; justify-content: center; text-align: center; padding: 30px; font-size: 16px; font-weight: 700; }
@media (max-width: 760px) and (orientation: portrait) {
  .orientation-hint { display: flex; }
}

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .army-columns { grid-template-columns: 1fr; }
  .game-logo { letter-spacing: 1px; }
}
@media (max-width: 480px) {
  .topbar-stat { font-size: 12px; margin-right: 8px; }
  .btn-lg { font-size: 15px; padding: 13px 20px; }
  .result-title { font-size: 24px; }
}

/* Short-height screens (phones in landscape, where the battle is actually
   played — portrait shows the rotate hint instead): the pause/speed bar
   used to float over the bottom of the battlefield, covering exactly the
   ground band units now stand on. Move it up onto the topbar's own row,
   next to sound/music/fullscreen/settings, so the canvas's full height
   stays clear for watching the battle. */
@media (max-height: 500px) {
  .battle-controls {
    top: 8px; bottom: auto; left: auto; right: 180px;
    justify-content: flex-end; gap: 6px; padding: 0;
  }
  .speed-controls { padding: 3px; gap: 3px; }
  .speed-btn { padding: 5px 9px; font-size: 11px; }
  .battle-controls .btn-secondary { padding: 6px 10px; font-size: 12px; border-radius: 10px; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .screen.active { animation: none; }
  .toast { animation: none; }
}
body.reduced-motion .screen.active { animation: none; }
body.reduced-motion .toast { animation: none; }

/* Below-fold SEO content: real, crawlable copy that sits after the full-
   viewport app shell. Not shown to players during normal play (the app is
   position:fixed and covers the viewport), but present in the DOM for
   search engines and for anyone who scrolls past a broken/unsupported app. */
.seo-content { position: relative; z-index: 0; margin-top: 100vh; margin-top: 100dvh; max-width: 880px; margin-left: auto; margin-right: auto; padding: 40px 20px 80px; color: var(--text-dim); line-height: 1.7; }
.seo-content h1, .seo-content h2 { color: var(--text); font-size: 22px; margin-top: 36px; }
.seo-content h3 { color: var(--text); font-size: 17px; }
.seo-content a { color: var(--player-cyan); }
.seo-content ul { padding-left: 20px; }