/* ================== BODY ================== */
body{
    margin:0;
    padding:0;
    font-family: Arial, sans-serif;
    background:#0b1d3a;
    color:#fff;
    min-height:100vh;
    overflow-x:hidden;
}
/* ================== CANVAS ================== */
#sparkCanvas{
    position:fixed;
    top:0;
    left:0;
    width:100%;
    height:100%;
    pointer-events:none;
    z-index:1;
    filter: drop-shadow(0 0 5px white);
}
/* ================== CONTAINER ================== */
.container{
    position: relative;
    z-index: 2;
    display:flex;
    flex-direction:column;
    justify-content:center;
    align-items:center;
    width:100%;
    padding-top:80px; /* IMPORTANT FIX */
}
.card,
.questionBlock,
.action-btn,
.lang-btn{
    will-change: transform;
}
.action-btn:active,
.lang-btn:active,
#submitBtn:active{
    transform: scale(0.95);
}
/* ================== HEADER ================== */
.header{
    text-align:center;
    margin-bottom:20px;
}

/* ================== CARD ================== */

/* ================== ANIMATION ================== */
@keyframes fadeIn{
    from{
        opacity:0;
        transform:translateY(20px);
    }
    to{
        opacity:1;
        transform:translateY(0);
    }
}

/* ================== TITLE ================== */
#quizTitle{
    font-size:50px;
    font-weight:bold;
    margin:0;
    text-shadow:0 0 10px #6b6ffb;
}
.card{
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);

  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 20px;

  padding: 25px;
  width: 420px;
  margin: 20px auto;

  box-shadow: 0 10px 35px rgba(0,0,0,0.4);
  transition: 0.3s ease;
}

.card:hover{
  transform: translateY(-5px);
}
/* ================== LOGIN ================== */
#loginBox input{
    width:90%;
    padding:10px;
    border-radius:8px;
    border:none;
    outline:none;
    margin:8px 0;
}

/* ================== BUTTONS ================== */
.lang-btn{
    display:block;
    width:100%;
    margin:10px 0;
    background:#6b6ffb;
    color:#fff;
    border:none;
    padding:14px;
    font-size:18px;
    font-weight:bold;
    border-radius:10px;
    cursor:pointer;
    transition:0.3s;
}
.lang-btn:hover{
    background:#5a5fe0;
    transform:scale(1.05);
}

/* ================== QUESTIONS ================== */
.questionBlock{
    padding:15px;
    margin:15px 0;
    border-radius:12px;
    background:#132b4f;
    text-align:left;
    transition:0.3s;
}
.questionBlock:hover{
    transform: translateY(-5px);
    box-shadow:0 10px 25px rgba(0,0,0,0.4);
}
.questionBlock p{
    font-weight:bold;
    margin-bottom:10px;
}

/* ================== OPTIONS ================== */
.options:hover{
    background:rgba(107,111,251,0.2);
}

/* ================== TIMER ================== */
#timerBox{
    font-size:26px;
    font-weight:bold;
}
.danger{
    color:red !important;
    animation:blink 0.5s infinite;
}
@keyframes blink{
    0%{opacity:1;}
    50%{opacity:0.3;}
    100%{opacity:1;}
}

/* ================== SUBMIT BUTTON ================== */
#submitBtn{
    margin:25px auto;
    padding:12px 35px;
    font-size:18px;
    font-weight:bold;
    border:none;
    border-radius:10px;
    background:linear-gradient(45deg,#6b6ffb,#8f7bff);
    color:white;
    cursor:pointer;
    transition:0.3s;
}
#submitBtn:hover{
    transform:scale(1.05);
}

/* ================== SCORE ================== */
#scoreText{
    font-size:28px;
    margin-bottom:20px;
}

/* ================== REVIEW ================== */
.review-container{
    max-height:350px;
    overflow-y:auto;
    margin-top:20px;
}

.review-box{
    padding:18px;
    margin:15px 0;
    border-radius:15px;
    background:linear-gradient(145deg,#132b4f,#1c3b6b);
    box-shadow:0 6px 20px rgba(0,0,0,0.3);
    text-align:left;
    transition:0.3s;
}
.review-box:hover{
    transform: translateY(-3px) scale(1.02);
}

/* correct / wrong card */
.review-box.correct{
    background: linear-gradient(145deg,#1c3b6b,#244c85);
}
.review-box.wrong{
    background: linear-gradient(145deg,#1a2f57,#233f73);
}

/* options */
.review-box .option{
    display:block;
    padding:10px;
    margin:6px 0;
    border-radius:8px;
    border:1px solid rgba(107,111,251,0.3);
}

.review-box .option.correct{
    background: rgba(0,255,136,0.2);
    color:#00ff88;
    border:1px solid #00ff88;
    font-weight:bold;
}
.review-box .option.wrong{
    background: rgba(255,77,77,0.2);
    color:#ff4d4d;
    border:1px solid #ff4d4d;
    font-weight:bold;
}
.review-box .option.normal{
    color:#ccc;
}

.question-title{
    font-size:18px;
    font-weight:bold;
    margin-bottom:10px;
}

/* ================== BUTTON ================== */
#reviewBtn{
    margin:8px auto;
    padding:12px 30px;
    font-size:18px;
    width:220px;
    border:none;
    border-radius:50px;
    background:linear-gradient(45deg,#6b6ffb,#8f7bff);
    color:white;
    cursor:pointer;
    transition:0.3s;
    box-shadow:0 0 15px rgba(107,111,251,0.5);
}
#reviewBtn:hover{
    transform:scale(1.08);
}

/* ACTION BUTTON */
.action-btn{
    display:block;
    margin:6px auto;
    padding:12px 30px;
    font-size:18px;
    font-weight:bold;
    border:none;
   border-radius:50px;
    background:linear-gradient(45deg,#6b6ffb,#8f7bff);
    color:white;
    cursor:pointer;
    transition:0.3s;
    box-shadow:0 0 15px rgba(107,111,251,0.5);
}
.action-btn:hover{
    transform:scale(1.08);
    box-shadow:0 0 25px rgba(107,111,251,0.8);
}

#scoreBox .action-btn{
    width:220px;
    border-radius:50px;
    padding:12px 20px;
    white-space: nowrap;
}

/* ================== LEADERBOARD ================== */
#leaderboardBox{
    margin-top:20px;
    animation: fadeIn 0.4s ease;
}

#leaderboardList{
    list-style:none;
    padding:0;
    margin-top:20px;
}

#leaderboardList li{
    background:#132b4f;
    margin:10px 0;
    padding:14px;
    border-radius:10px;
    font-size:18px;
    transition:0.3s;
}

#leaderboardList li:hover{
    transform:scale(1.03);
    background:#1b3a66;
}

#leaderboardList li:first-child{
    color:gold;
    font-weight:bold;
    box-shadow:0 0 15px rgba(255,215,0,0.5);
}

/* ================== MOBILE RESPONSIVE ================== */
@media(max-width:500px){

    

    #quizTitle{
        font-size:35px;
    }

.action-btn,
    .lang-btn,
    #submitBtn{
        width:100%;
        font-size:16px;
    }

#timerBox{
        font-size:20px;
    }
}
.progress-bar{
  width: 100%;
  height: 6px;
  background: rgba(255,255,255,0.2);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 10px;
}

#progress{
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg,#00f5ff,#7c3aed);
  transition: width 0.3s;
}
.action-btn, .lang-btn{
  transition: all 0.2s ease;
}

.action-btn:hover, .lang-btn:hover{
  transform: scale(1.05);
  box-shadow: 0 0 15px rgba(124,58,237,0.6);
  cursor: pointer;
}

.action-btn:active, .lang-btn:active{
  transform: scale(0.95);
}
@media (hover: hover){
  .questionBlock:hover{
    transform: translateY(-5px);
    box-shadow:0 10px 25px rgba(0,0,0,0.4);
  }
}
#progress{
  border-radius: 10px;
}
#loginBox{
    text-align: center;
}
.review-box.correct{
    border: 2px solid #00ff88;
    box-shadow: 0 0 15px rgba(0,255,136,0.3);
}

.review-box.wrong{
    border: 2px solid #ff4d4d;
    box-shadow: 0 0 15px rgba(255,77,77,0.3);
}
#reviewBox h2{
    text-align: center;
    margin-bottom: 20px;
}

.options{
    display:flex;
    flex-direction:column;
    gap:10px;
}

.option{
    display:flex;
    align-items:center;
    gap:10px;
    padding:12px;
    background:#1c3a66;
    border-radius:8px;
    cursor:pointer;
    color:white;
}

.option input{
    margin:0;
}
.correctOption{
    background: rgba(0,255,136,0.2) !important;
    border: 2px solid #00ff88 !important;
    color: #00ff88 !important;
}

.wrongOption{
    background: rgba(255,77,77,0.2) !important;
    border: 2px solid #ff4d4d !important;
    color: #ff4d4d !important;
}

.correctOption span,
.wrongOption span{
    font-weight:bold;
}
.review-options{
    display:flex;
    flex-direction:column;
    gap:10px;
    margin-top:10px;
}

.review-options .option{
    display:flex;
    align-items:center;
    gap:10px;
    padding:12px;
    background:#1c3a66;
    border-radius:8px;
}

.correctOption{
    background:rgba(0,255,136,0.2) !important;
    border:1px solid #00ff88;
    color:#00ff88;
}

.wrongOption{
    background:rgba(255,77,77,0.2) !important;
    border:1px solid #ff4d4d;
    color:#ff4d4d;
}
.review-options{
    display:flex;
    flex-direction:column;
    gap:10px;
    margin-top:10px;
}

.review-options .option{
    display:flex;
    align-items:center;
    gap:10px;
    padding:12px;
    border-radius:8px;
    background:#1c3a66;
}