/* ═══════════════════════════════════════════════
   DRAGON TOWER — PREMIUM DESIGN SYSTEM
   ═══════════════════════════════════════════════ */
@import url('https://fonts.googleapis.com/css2?family=MedievalSharp&family=Cinzel+Decorative:wght@400;700;900&family=Crimson+Pro:wght@300;400;600;700&display=swap');

:root {
  --gold:      #d4a843;
  --gold-lt:   #f5d070;
  --gold-dk:   #8a6420;
  --crimson:   #8b1a1a;
  --crimson-lt:#cc3333;
  --fire:      #ff6600;
  --ember:     #ff3300;
  --obsidian:  #080608;
  --stone:     #181214;
  --parchment: #f0e4c0;
  --parch-dk:  #c8b880;
  --shadow:    rgba(0,0,0,0.85);
  --glass:     rgba(15, 10, 15, 0.85);
}

* { margin:0; padding:0; box-sizing:border-box; -webkit-tap-highlight-color:transparent; user-select:none; }
html, body { width:100%; height:100%; overflow:hidden; background:var(--obsidian); touch-action:none; font-family:'Crimson Pro', serif; color:var(--parchment); }
canvas { position: absolute; inset: 0; z-index: 10; }

/* ── SCREENS ── */
.screen { position:fixed; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:center; z-index:500; transition: opacity 0.5s ease; }
.screen.off { opacity: 0; pointer-events: none; display: none; }

/* ── SPLASH ── */
#splash {
  background: url('../assets/splash_bg.png') no-repeat center center;
  background-size: cover;
}
#splash::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(circle at center, transparent, var(--obsidian));
}

.splash-content { position:relative; z-index:2; display:flex; flex-direction:column; align-items:center; gap:10px; padding:40px; text-align:center; }
.game-title {
  font-family:'Cinzel Decorative',serif;
  font-size:clamp(40px, 12vw, 100px);
  font-weight:900;
  background: linear-gradient(135deg, var(--gold-lt), var(--gold), var(--fire), var(--gold-lt));
  -webkit-background-clip:text; -webkit-text-fill-color:transparent;
  filter: drop-shadow(0 0 30px rgba(255, 102, 0, 0.4));
  letter-spacing: 5px;
}

.splash-btn {
  margin-top: 30px;
  background: linear-gradient(135deg, var(--gold), var(--gold-dk));
  border: none; padding: 18px 50px;
  font-family: 'Cinzel Decorative', serif; font-weight: 700; font-size: 20px;
  color: var(--obsidian); cursor: pointer;
  clip-path: polygon(15px 0%, 100% 0%, calc(100% - 15px) 100%, 0% 100%);
  box-shadow: 0 0 20px rgba(212, 168, 67, 0.4);
  transition: transform 0.2s, filter 0.2s;
}
.splash-btn:hover { transform: scale(1.05); filter: brightness(1.2); }

/* ── GUIDE ── */
#guide { background: rgba(0,0,0,0.9); z-index: 600; padding: 20px; }
.guide-card {
    max-width: 600px; background: var(--glass); border: 1px solid var(--gold-dk);
    padding: 30px; border-radius: 4px; box-shadow: 0 0 50px rgba(0,0,0,1);
    backdrop-filter: blur(10px);
}
.guide-title { font-family: 'Cinzel Decorative', serif; color: var(--gold); text-align: center; margin-bottom: 20px; font-size: 24px; }
.g-section { margin-bottom: 20px; }
.g-section-title { color: var(--gold-dk); font-size: 12px; border-bottom: 1px solid rgba(212,168,67,0.2); margin-bottom: 10px; padding-bottom: 5px; }
.g-row { display: flex; gap: 10px; margin-bottom: 5px; font-size: 14px; }
.g-key { color: var(--gold); font-weight: bold; min-width: 80px; }

/* ── HUD ── */
#hud {
  position:fixed; top:0; left:0; right:0; z-index:100;
  background: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent);
  padding: 15px 25px; display: none; justify-content: space-between; align-items: flex-start;
  pointer-events: none;
}
.hud-block { display: flex; flex-direction: column; }
.hud-label { font-size: 10px; color: var(--parch-dk); text-transform: uppercase; letter-spacing: 2px; }
.hud-val { font-family: 'Cinzel Decorative', serif; font-size: 24px; color: var(--gold); }

.hp-bar-bg { width: 120px; height: 8px; background: rgba(255,255,255,0.1); border-radius: 4px; overflow: hidden; margin-top: 5px; }
.hp-bar-fill { height: 100%; width: 100%; background: linear-gradient(90deg, var(--crimson), var(--crimson-lt)); transition: width 0.3s ease; }

/* ── PALETTE ── */
#tower-palette {
  position:fixed; bottom:0; left:50%; transform: translateX(-50%); z-index:100;
  background: var(--glass); border: 1px solid var(--gold-dk); border-bottom: none;
  padding: 15px 30px; display: none; gap: 15px; border-radius: 12px 12px 0 0;
  backdrop-filter: blur(10px);
}
.tower-btn {
  display: flex; flex-direction: column; align-items: center; gap: 5px;
  padding: 10px; border: 1px solid transparent; border-radius: 8px;
  cursor: pointer; transition: 0.2s; min-width: 80px;
}
.tower-btn:hover { background: rgba(212,168,67,0.1); }
.tower-btn.selected { border-color: var(--gold); background: rgba(212,168,67,0.2); transform: translateY(-5px); }
.tower-emoji { font-size: 28px; }
.tower-btn-name { font-size: 9px; color: var(--parch-dk); text-transform: uppercase; }
.tower-btn-cost { font-size: 12px; color: var(--gold); font-weight: bold; }
.tower-btn.cant-afford { opacity: 0.4; filter: grayscale(1); cursor: not-allowed; }

/* ── OVERLAYS ── */
#game-overlay {
  position:fixed; inset:0; z-index:1000; background: rgba(0,0,0,0.9);
  display: none; flex-direction: column; align-items: center; justify-content: center;
}
.ov-title { font-family: 'Cinzel Decorative', serif; font-size: 48px; color: var(--gold); margin-bottom: 20px; }
.ov-btn {
    background: var(--gold); color: black; border: none; padding: 15px 40px;
    font-family: 'Cinzel Decorative', serif; cursor: pointer; margin: 10px;
    clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
}

/* ── TOAST ── */
.toast-el {
  position: fixed; top: 100px; left: 50%; transform: translateX(-50%);
  background: var(--glass); border: 1px solid var(--gold); padding: 10px 30px;
  border-radius: 20px; font-family: 'Cinzel Decorative', serif; color: var(--gold);
  opacity: 0; transition: 0.3s; pointer-events: none; z-index: 2000;
}
.toast-el.show { opacity: 1; transform: translateX(-50%) translateY(10px); }

/* ── CONTROLS ── */
#ctrl-btns { position: fixed; top: 90px; right: 20px; display: none; gap: 10px; z-index: 200; }
.ctrl-btn {
    width: 44px; height: 44px; background: var(--glass); border: 1px solid var(--gold-dk);
    color: var(--gold); display: flex; align-items: center; justify-content: center;
    border-radius: 50%; cursor: pointer; transition: 0.2s;
}
.ctrl-btn:hover { background: var(--gold); color: black; }
.ctrl-btn.active { background: var(--fire); border-color: var(--fire); color: white; }

@media (max-width: 600px) {
    .hud-val { font-size: 18px; }
    #tower-palette { width: 100%; border-radius: 0; overflow-x: auto; justify-content: flex-start; padding: 10px; }
    .tower-btn { min-width: 70px; }
}