*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:Segoe UI,Arial,sans-serif;
}

body{
    background:#050816;
    color:white;
    overflow-y:auto;
}

/* =========================
   TŁO
========================= */

#stars,
#particles{
    position:fixed;
    inset:0;
    pointer-events:none;
}

#stars{
    background:
    radial-gradient(circle at 20% 20%,white 1px,transparent 1px),
    radial-gradient(circle at 80% 30%,white 1px,transparent 1px),
    radial-gradient(circle at 60% 70%,white 1px,transparent 1px),
    radial-gradient(circle at 30% 80%,white 1px,transparent 1px);
    background-size:250px 250px;
    opacity:.4;
}

#particles{
    background:
    radial-gradient(circle,#00ffff22,transparent 70%);
    animation:pulseBg 8s infinite linear;
}

@keyframes pulseBg{
    0%{transform:scale(1);}
    50%{transform:scale(1.2);}
    100%{transform:scale(1);}
}

/* =========================
   UKRYWANIE
========================= */

.hidden{
    display:none !important;
}

/* =========================
   LOGIN
========================= */

#loginScreen{
    width:100vw;
    height:100vh;
    display:flex;
    justify-content:center;
    align-items:center;
}

.login-card{
    width:420px;
    padding:40px;
    border-radius:25px;
    background:rgba(255,255,255,.05);
    backdrop-filter:blur(20px);
    border:1px solid rgba(255,255,255,.1);
    box-shadow:
    0 0 30px rgba(0,255,255,.3),
    inset 0 0 20px rgba(255,255,255,.05);
}

.logo{
    font-size:42px;
    margin-bottom:20px;
    text-shadow:
    0 0 10px cyan,
    0 0 30px cyan;
}

.subtitle{
    margin-bottom:20px;
    opacity:.8;
}

#passwordInput{
    width:100%;
    padding:15px;
    border:none;
    border-radius:12px;
    background:#0b1020;
    color:white;
    font-size:18px;
    margin-bottom:15px;
}

#loginBtn{
    width:100%;
}

/* =========================
   PRZYCISKI
========================= */

button{
    cursor:pointer;
    border:none;
    color:white;
    font-weight:bold;
    transition:.25s;
    border-radius:12px;
    background:
    linear-gradient(
    135deg,
    #0066ff,
    #00b7ff
    );
}

button:hover{
    transform:translateY(-3px);
    box-shadow:
    0 0 20px #00b7ff;
}

button:active{
    transform:scale(.95);
}

/* =========================
   MENU
========================= */

#menuScreen{
    height:100vh;
    display:flex;
    justify-content:center;
    align-items:center;
}

.menu-card{
    width:450px;
    background:rgba(255,255,255,.05);
    backdrop-filter:blur(20px);
    border-radius:25px;
    padding:40px;
}

.menu-card h1{
    margin-bottom:30px;
}

.menu-card button{
    width:100%;
    padding:18px;
    margin-bottom:12px;
}

/* =========================
   HEADER
========================= */

header{
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:15px 25px;
}

.top-left{
    display:flex;
    gap:25px;
    font-size:18px;
}

.top-right{
    display:flex;
    gap:10px;
}

.top-right button{
    padding:12px 18px;
}

/* =========================
   BOSS HP
========================= */

#bossSection{
    width:100%;
    text-align:center;
}

#bossName{
    margin-top:10px;
    margin-bottom:10px;
    font-size:34px;
}

#bossHpContainer{
    width:70%;
    height:35px;
    margin:auto;
    background:#111;
    border-radius:999px;
    overflow:hidden;
    border:2px solid #444;
}

#bossHpBar{
    width:100%;
    height:100%;
    background:
    linear-gradient(
    90deg,
    #00ff55,
    #ffee00,
    #ff0000
    );
    transition:.3s;
}

#bossHpText{
    margin-top:10px;
    font-size:20px;
}

/* =========================
   ARENA
========================= */

#arena{
    width:95%;
    max-width:1200px;
    height:620px;
    margin:20px auto;
    position:relative;
    overflow:hidden;
    border-radius:20px;
    border:3px solid rgba(255,255,255,.2);

    background:
    linear-gradient(
    180deg,
    #0a1830,
    #050816
    );

    box-shadow:
    0 0 50px rgba(0,255,255,.15);
}

#boss{
    position:absolute;
    width:180px;
    left:50%;
    top:50%;
    transform:translate(-50%,-50%);
    transition:
    left 1s,
    top 1s;
    z-index:10;
}

/* =========================
   EFEKTY
========================= */

#effectsLayer,
#damageLayer,
#projectileLayer,
#enemyProjectileLayer{
    position:absolute;
    inset:0;
}

.damageText{
    position:absolute;
    font-weight:bold;
    color:#ff4d4d;
    font-size:30px;
    animation:damageFly 1s forwards;
}

@keyframes damageFly{

    from{
        opacity:1;
        transform:translateY(0);
    }

    to{
        opacity:0;
        transform:translateY(-80px);
    }

}

.critical{
    color:gold;
    text-shadow:
    0 0 15px gold;
}

/* =========================
   BRONIE
========================= */

#weaponPanel{
    width:95%;
    margin:auto;
    display:grid;
    grid-template-columns:
    repeat(auto-fit,minmax(150px,1fr));
    gap:10px;
}

.weapon{
    padding:16px;
    font-size:16px;
}

/* =========================
   COMBO
========================= */

#comboSection{
    margin-top:15px;
    text-align:center;
}

#comboText{
    font-size:38px;
    font-weight:bold;
    color:#ffd700;
    text-shadow:
    0 0 15px gold;
}

/* =========================
   SKLEP
========================= */

.shop-card,
.achievement-card,
.stats-card,
.victory-card{

    width:1000px;
    max-width:95%;

    margin:40px auto;

    background:
    rgba(255,255,255,.05);

    backdrop-filter:blur(20px);

    border-radius:25px;

    padding:35px;

}

.shop-grid{
    margin-top:20px;

    display:grid;

    grid-template-columns:
    repeat(auto-fit,minmax(220px,1fr));

    gap:20px;
}

.shop-item{
    padding:20px;

    border-radius:15px;

    background:
    rgba(255,255,255,.05);

    border:
    1px solid rgba(255,255,255,.08);
}

.shop-item h3{
    margin-bottom:10px;
}

.shop-item p{
    margin-bottom:10px;
}

.buy{
    width:100%;
    padding:12px;
}

/* =========================
   ACHIEVEMENTS
========================= */

#achievementList{
    margin-top:25px;

    display:grid;

    grid-template-columns:
    repeat(auto-fit,minmax(250px,1fr));

    gap:15px;
}

.achievement{
    padding:15px;

    border-radius:15px;

    background:
    rgba(255,255,255,.05);
}

/* =========================
   STATS
========================= */

#statsContent{
    margin-top:25px;
}

#statsContent p{
    font-size:24px;
    margin-bottom:10px;
}

/* =========================
   WYGRANA
========================= */

#victoryScreen{
    position:fixed;
    inset:0;

    background:
    rgba(0,0,0,.85);

    display:flex;
    justify-content:center;
    align-items:center;
}

.victory-card{
    text-align:center;
}

.victory-card h1{
    font-size:60px;
    color:gold;

    text-shadow:
    0 0 30px gold;
}

.victory-card h2{
    margin:20px 0;
}

/* =========================
   POWIADOMIENIA
========================= */

#notificationContainer{

    position:fixed;

    right:20px;
    top:20px;

    z-index:9999;
}

.notification{

    background:
    rgba(0,0,0,.8);

    border-left:
    4px solid cyan;

    padding:15px;

    margin-bottom:10px;

    border-radius:10px;

    animation:
    notifShow .3s ease;
}

@keyframes notifShow{

    from{
        opacity:0;
        transform:translateX(100px);
    }

    to{
        opacity:1;
        transform:translateX(0);
    }

}

/* =========================
   RAGE MODE
========================= */

.rage{

    animation:
    rageGlow .6s infinite alternate;

}

@keyframes rageGlow{

    from{
        box-shadow:
        0 0 20px red;
    }

    to{
        box-shadow:
        0 0 60px red;
    }

}

/* =========================
   SHAKE
========================= */

.shake{

    animation:
    shake .3s;

}

@keyframes shake{

    0%{transform:translateX(0);}
    25%{transform:translateX(-10px);}
    50%{transform:translateX(10px);}
    75%{transform:translateX(-5px);}
    100%{transform:translateX(0);}

}