:root {
    --bg-deep: #050508;
    --bg-panel: rgba(10, 15, 30, 0.7);
    --gold: #fbc531;
    --gold-glow: rgba(251, 197, 49, 0.45);
    --crimson: #e84118;
    --crimson-glow: rgba(232, 65, 24, 0.55);
    --gem: #9c88ff;
    --gem-glow: rgba(156, 136, 255, 0.55);
    --text-hi: #ffffff;
    --text-mid: #a0b0d0;
    --text-lo: #556080;
    --font-display: 'Cinzel', serif;
    --font-body: 'Outfit', sans-serif;
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-bounce: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

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

html, body {
    width: 100%; height: 100dvh; overflow: hidden;
    user-select: none; -webkit-user-select: none;
    -webkit-tap-highlight-color: transparent;
    background: #050508; font-family: var(--font-body); color: var(--text-hi);
    touch-action: manipulation;
}

@keyframes bgDrift {
    0%, 100% { background-position: 0% 50%; }
    25% { background-position: 50% 0%; }
    50% { background-position: 100% 50%; }
    75% { background-position: 50% 100%; }
}

body {
    background: linear-gradient(-45deg, #050508, #101525, #080515, #150a1a);
    background-size: 400% 400%;
    animation: bgDrift 25s ease infinite;
}
body::before {
    content: ''; position: fixed; inset: 0;
    background: radial-gradient(circle at 50% 50%, rgba(156,136,255,0.04) 0%, transparent 65%);
    pointer-events: none; z-index: 0;
}

.game {
    position: relative; z-index: 10; width: 100vw; height: 100dvh;
    display: flex; flex-direction: column; gap: 10px; padding: 12px 14px;
    background: var(--bg-panel); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.03);
}

.game-title {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3.5vw, 2.2rem); font-weight: 900;
    text-align: center; text-transform: uppercase; letter-spacing: 5px;
    background: linear-gradient(to bottom, #fff, var(--gold));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 18px var(--gold-glow));
    flex-shrink: 0; position: relative;
}
.version-btn {
    position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
    background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12);
    border-radius: 20px; color: var(--text-mid); font-size: 0.65rem;
    padding: 3px 10px; cursor: pointer; font-family: var(--font-body);
    transition: var(--transition-smooth); letter-spacing: 1px;
}
.version-btn:hover {
    background: rgba(255,255,255,0.14); color: #fff;
    border-color: rgba(255,255,255,0.3); box-shadow: 0 0 12px rgba(255,255,255,0.08);
}

.stats { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; flex-shrink: 0; }
.stat {
    background: rgba(0,0,0,0.45); border: 1px solid rgba(255,255,255,0.08);
    border-radius: 50px; padding: 6px 13px;
    font-size: clamp(0.75rem, 1.8vw, 0.9rem); font-weight: 600; color: var(--text-mid);
    display: flex; align-items: center; gap: 5px;
    transition: var(--transition-smooth); white-space: nowrap;
}
.stat:hover { background: rgba(255,255,255,0.06); transform: translateY(-2px); border-color: rgba(255,255,255,0.18); }
.stat-val { color: var(--text-hi); font-weight: 700; transition: color 0.3s; }
.stat-val.bump { animation: colorBump 0.4s ease; color: var(--gold); }
@keyframes colorBump {
    0% { transform: scale(1); } 40% { transform: scale(1.45); color: #fff; } 100% { transform: scale(1); }
}

.boss-arena {
    flex-grow: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
    position: relative; overflow: hidden; border-radius: 22px;
    background: radial-gradient(circle at center, rgba(255,255,255,0.025) 0%, transparent 70%);
    box-shadow: inset 0 0 60px rgba(0,0,0,0.5); border: 1px solid rgba(255,255,255,0.03);
    min-height: 220px;
}
.boss-name {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 4.5vw, 3.5rem); font-weight: 900;
    text-shadow: 0 4px 18px rgba(0,0,0,0.85), 0 0 25px var(--crimson-glow);
    z-index: 2; position: absolute; top: 8%; transition: var(--transition-smooth);
    text-align: center; pointer-events: none;
}
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-16px); } }
.boss-click-zone {
    position: relative; cursor: pointer; z-index: 5;
    width: clamp(170px, 40vh, 420px); aspect-ratio: 1;
    display: flex; align-items: center; justify-content: center;
    animation: float 4.5s ease-in-out infinite; will-change: transform;
    transition: transform 0.05s ease;
}
.boss-click-zone:active { transform: scale(0.93); }
.boss-img {
    width: 100%; height: 100%; object-fit: contain;
    filter: drop-shadow(0 18px 35px rgba(0,0,0,0.9));
    transition: transform 0.06s ease, filter 0.06s ease;
    will-change: transform, filter; pointer-events: none;
}
.hit-anim { animation: squish 0.22s cubic-bezier(0.25,0.46,0.45,0.94); }
@keyframes squish {
    0% { transform: scale(1); filter: brightness(1) drop-shadow(0 18px 35px rgba(0,0,0,0.9)); }
    30% { transform: scale(0.82,1.18); filter: brightness(1.9) drop-shadow(0 0 35px var(--crimson)); }
    100% { transform: scale(1); filter: brightness(1) drop-shadow(0 18px 35px rgba(0,0,0,0.9)); }
}
.shake { animation: screenShake 0.2s cubic-bezier(.36,.07,.19,.97) both; }
@keyframes screenShake {
    0%, 100% { transform: translate3d(0,0,0); } 25% { transform: translate3d(-7px,4px,0); }
    50% { transform: translate3d(7px,-4px,0); } 75% { transform: translate3d(-4px,7px,0); }
}

.health-area { width: 88%; max-width: 550px; position: absolute; bottom: 5%; z-index: 10; }
.health-bar-track {
    background: rgba(0,0,0,0.65); border-radius: 20px; height: 28px;
    border: 2px solid rgba(255,255,255,0.08); box-shadow: 0 4px 16px rgba(0,0,0,0.55);
    position: relative; overflow: hidden;
}
.health-bar-fill {
    height: 100%; width: 100%; border-radius: 20px;
    background: linear-gradient(90deg, #c0392b, #ff4757, #ff6b81);
    box-shadow: inset 0 0 12px rgba(255,255,255,0.3);
    transition: width 0.12s cubic-bezier(0.4,0,0.2,1);
}
.hp-text {
    position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 0.9rem; text-shadow: 0 2px 5px rgba(0,0,0,0.8); pointer-events: none;
}

.particle {
    position: absolute; pointer-events: none; border-radius: 50%; z-index: 999; background: #fff;
    box-shadow: 0 0 10px #fff; animation: shoot 0.55s cubic-bezier(0,.9,.57,1) forwards;
    will-change: transform, opacity;
}
@keyframes shoot {
    0% { transform: translate(0,0) scale(1); opacity: 1; }
    100% { transform: translate(var(--tx),var(--ty)) scale(0); opacity: 0; }
}
.damage-number {
    position: absolute; pointer-events: none; z-index: 1000; font-family: var(--font-display);
    font-weight: 900; font-size: clamp(1.3rem, 3.5vw, 2.3rem); color: #fff;
    text-shadow: 0 4px 16px rgba(0,0,0,0.9), 0 0 10px var(--gold);
    animation: floatDmg 0.75s ease-out forwards; will-change: transform, opacity;
}
.damage-number.crit {
    font-size: clamp(2rem, 5.5vw, 3.8rem); color: #ff9f43;
    text-shadow: 0 4px 22px rgba(0,0,0,0.9), 0 0 22px #ff9f43;
    animation: critFloat 0.9s ease-out forwards;
}
@keyframes floatDmg {
    0% { opacity:1; transform: translate(0,0) scale(0.4); }
    20% { transform: translate(var(--dx),-28px) scale(1.25); }
    100% { opacity:0; transform: translate(calc(var(--dx)*2), -95px) scale(0.7); }
}
@keyframes critFloat {
    0% { opacity:1; transform: translate(0,0) scale(0.4) rotate(calc(var(--rot)*-1)); }
    20% { transform: translate(var(--dx),-38px) scale(1.55) rotate(var(--rot)); }
    100% { opacity:0; transform: translate(calc(var(--dx)*2),-115px) scale(0.9) rotate(calc(var(--rot)*2)); }
}

.shop {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px; flex-shrink: 0; max-height: 22vh; overflow-y: auto; padding-right: 4px;
}
.shop::-webkit-scrollbar { width: 4px; }
.shop::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.18); border-radius: 4px; }
.upgrade {
    background: rgba(255,255,255,0.025); border: 1px solid rgba(255,255,255,0.05);
    border-radius: 16px; padding: 10px; text-align: center; cursor: pointer;
    transition: var(--transition-smooth); position: relative; overflow: hidden;
}
.upgrade::before {
    content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 60%);
    opacity: 0; transition: opacity 0.35s; transform: scale(0.5);
}
.upgrade:hover {
    background: rgba(255,255,255,0.07); border-color: var(--gold-glow);
    transform: translateY(-4px); box-shadow: 0 14px 28px rgba(0,0,0,0.5);
}
.upgrade:hover::before { opacity: 1; transform: scale(1); }
.upgrade:active { transform: translateY(0); }
.upgrade.cant-afford { opacity: 0.38; filter: grayscale(1); cursor: not-allowed; pointer-events: none; }
.upgrade-icon { font-size: 1.8rem; display: block; margin-bottom: 4px; filter: drop-shadow(0 2px 6px rgba(0,0,0,0.5)); }
.upgrade h3 { font-family: var(--font-display); font-size: 0.9rem; color: var(--gold); margin: 2px 0; }
.upgrade-desc { font-size: 0.7rem; color: var(--text-mid); margin: 3px 0; }
.upgrade-level { background: rgba(0,0,0,0.5); border-radius: 10px; padding: 3px 9px; font-size: 0.7rem; color: var(--text-mid); display: inline-block; margin-bottom: 4px; }
.upgrade-cost { background: rgba(251,197,49,0.1); border: 1px solid var(--gold-glow); border-radius: 10px; padding: 4px 9px; color: var(--gold); font-weight: 800; display: inline-flex; align-items: center; gap: 3px; font-size: 0.8rem; }

.footer {
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 8px; padding-top: 8px;
    border-top: 1px solid rgba(255,255,255,0.04); flex-shrink: 0;
}
.footer-buttons { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; flex: 1; }
.btn {
    background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.09);
    border-radius: 12px; padding: 9px 16px; color: #fff; font-family: var(--font-body);
    font-weight: 700; cursor: pointer; transition: var(--transition-smooth);
    font-size: clamp(0.75rem, 1.7vw, 0.9rem); text-shadow: 0 2px 4px rgba(0,0,0,0.5); white-space: nowrap;
}
.btn:hover { background: rgba(255,255,255,0.13); border-color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,0.3); }
.btn:active { transform: translateY(0); }
.btn.gem-btn { background: rgba(156,136,255,0.1); border-color: var(--gem-glow); color: var(--gem); }
.btn.gem-btn:hover { background: var(--gem); color: #fff; box-shadow: 0 0 22px var(--gem-glow); border-color: var(--gem); }
.btn.gold-btn { background: rgba(251,197,49,0.1); border-color: var(--gold-glow); color: var(--gold); }
.btn.gold-btn:hover { background: var(--gold); color: #000; box-shadow: 0 0 22px var(--gold-glow); text-shadow: none; border-color: var(--gold); }
.btn.prestige-btn {
    background: rgba(232,65,24,0.12); border-color: var(--crimson-glow); color: #ff6b81;
    animation: prestigePulse 2s ease-in-out infinite;
}
@keyframes prestigePulse {
    0%,100% { box-shadow: 0 0 8px var(--crimson-glow); }
    50% { box-shadow: 0 0 25px var(--crimson-glow),0 0 40px rgba(232,65,24,0.3); }
}
.btn.prestige-btn:hover { background: var(--crimson); color: #fff; box-shadow: 0 0 30px var(--crimson-glow); border-color: var(--crimson); }
.btn.reset-btn {
    font-size: 0.7rem; padding: 6px 10px; opacity: 0.5;
    background: rgba(255,80,80,0.06); border-color: rgba(255,80,80,0.2); color: #ff6b6b; border-radius: 20px;
}
.btn.reset-btn:hover { opacity: 1; background: rgba(255,60,60,0.25); border-color: #ff4444; color: #fff; box-shadow: 0 0 18px rgba(255,50,50,0.3); }
.music-toggle {
    width: 42px; height: 42px; border-radius: 14px; background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.09); color: #fff; font-size: 1.1rem;
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    transition: var(--transition-smooth); flex-shrink: 0;
}
.music-toggle.playing { background: var(--gold); border-color: var(--gold); color: #000; box-shadow: 0 0 20px var(--gold-glow); }

.modal {
    position: fixed; inset: 0; background: rgba(0,0,0,0.82); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
    display: flex; align-items: center; justify-content: center; z-index: 10000;
    animation: fadeIn 0.2s ease-out forwards; padding: 16px;
}
@keyframes fadeIn { from { opacity:0; } to { opacity:1; } }
@keyframes popIn { from { transform: scale(0.88); opacity:0; } to { transform: scale(1); opacity:1; } }
.modal-content {
    background: #0f1423; border: 1px solid rgba(255,255,255,0.1); border-radius: 24px;
    padding: 22px; width: 100%; max-width: 580px; max-height: 82vh; overflow-y: auto;
    box-shadow: 0 30px 60px rgba(0,0,0,0.9), inset 0 0 0 1px rgba(255,255,255,0.04);
    animation: popIn 0.35s cubic-bezier(0.175,0.885,0.32,1.275) forwards;
}
.modal-content::-webkit-scrollbar { width: 6px; }
.modal-content::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.2); border-radius: 4px; }
.modal-close {
    float: right; background: rgba(255,255,255,0.04); border: none; color: #fff;
    border-radius: 12px; width: 34px; height: 34px; cursor: pointer; font-size: 1.1rem;
    transition: var(--transition-smooth); display: flex; align-items: center; justify-content: center;
}
.modal-close:hover { background: var(--crimson); transform: rotate(90deg); }
.list-item {
    background: rgba(0,0,0,0.4); border: 1px solid rgba(255,255,255,0.05); border-radius: 16px;
    padding: 12px 16px; margin-bottom: 10px; display: flex; justify-content: space-between;
    align-items: center; transition: var(--transition-smooth); gap: 10px;
}
.list-item:hover { border-color: rgba(255,255,255,0.2); background: rgba(255,255,255,0.04); }
.achievement-bar-wrap {
    background: rgba(0,0,0,0.5); border-radius: 14px; height: 20px; margin-bottom: 16px;
    overflow: hidden; border: 1px solid rgba(255,255,255,0.08);
}
.achievement-bar-fill { height: 100%; border-radius: 14px; background: linear-gradient(90deg, var(--gem), var(--gold)); transition: width 0.5s ease; }

.toast-container {
    position: fixed; top: 18px; right: 18px; z-index: 99999; display: flex; flex-direction: column;
    gap: 8px; pointer-events: none; max-width: 320px; width: 100%;
}
.toast {
    background: rgba(10,15,30,0.94); border: 1px solid var(--gold-glow); color: var(--gold);
    padding: 12px 18px; border-radius: 14px; font-weight: 700; font-size: 0.85rem;
    box-shadow: 0 8px 25px rgba(0,0,0,0.7); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
    animation: toastIn 0.4s cubic-bezier(0.175,0.885,0.32,1.275) forwards,
               toastOut 0.35s ease-in 2.4s forwards;
    pointer-events: auto; word-break: break-word;
}
@keyframes toastIn { from { opacity:0; transform: translateX(80px) scale(0.85); } to { opacity:1; transform: translateX(0) scale(1); } }
@keyframes toastOut { from { opacity:1; transform: translateX(0) scale(1); } to { opacity:0; transform: translateX(40px) scale(0.8); } }

@media (max-width: 600px) {
    .game { padding: 8px; gap: 7px; }
    .shop { grid-template-columns: repeat(2, 1fr); gap: 7px; max-height: 20vh; }
    .upgrade { padding: 7px; }
    .upgrade-icon { font-size: 1.4rem; }
    .btn { padding: 7px 11px; font-size: 0.7rem; }
    .boss-name { font-size: 1.4rem; top: 5%; }
    .health-bar-track { height: 22px; }
    .hp-text { font-size: 0.75rem; }
}
@media (max-width: 380px) {
    .stats { gap: 4px; }
    .stat { padding: 4px 8px; font-size: 0.65rem; gap: 3px; }
    .shop { grid-template-columns: repeat(2, 1fr); gap: 5px; max-height: 18vh; }
    .upgrade { padding: 5px; }
    .upgrade h3 { font-size: 0.7rem; }
    .upgrade-desc { font-size: 0.6rem; }
}