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

body {
    font-family: Arial, sans-serif;

    background:
        radial-gradient(
            circle at 80% 20%,
            rgba(91, 45, 190, 0.35),
            transparent 35%
        ),
        radial-gradient(
            circle at 20% 80%,
            rgba(35, 75, 190, 0.25),
            transparent 35%
        ),
        #050817;

    color: white;
    min-height: 100vh;
}


/* =========================
   الهيدر
========================= */

.topbar {
    height: 75px;

    background: rgba(10, 17, 40, 0.88);

    border-bottom: 1px solid rgba(130, 120, 255, 0.18);

    display: flex;
    align-items: center;
    justify-content: space-between;

    padding: 0 6%;

    backdrop-filter: blur(18px);
}

.title {
    font-size: 22px;
    font-weight: bold;
}

.back-btn {
    border: 1px solid rgba(130, 120, 255, 0.2);

    background: rgba(24, 31, 58, 0.85);

    color: white;

    padding: 10px 17px;

    border-radius: 11px;

    font-size: 15px;

    cursor: pointer;

    transition: 0.2s;
}

.back-btn:hover {
    background: linear-gradient(
        135deg,
        #4267ff,
        #8b3dff
    );

    transform: translateY(-2px);
}


/* =========================
   المحتوى
========================= */

.container {
    width: min(850px, 92%);
    margin: 40px auto;
}


/* =========================
   شاشة اختيار المستوى
========================= */

.level-screen {
    width: 100%;
}

.intro {
    background:
        linear-gradient(
            135deg,
            #4267ff,
            #823cff
        );

    border-radius: 22px;

    padding: 35px;

    text-align: center;

    margin-bottom: 30px;

    box-shadow:
        0 20px 55px rgba(70, 55, 220, 0.25);
}

.intro-icon {
    font-size: 60px;
    margin-bottom: 10px;
}

.intro h1 {
    font-size: 30px;
    margin-bottom: 10px;
}

.intro p {
    opacity: 0.9;
    line-height: 1.7;
}


.level-screen h2 {
    margin-bottom: 16px;
    font-size: 23px;
}


.levels {
    display: grid;

    grid-template-columns: repeat(3, 1fr);

    gap: 16px;
}


.level-card {
    border: 1px solid rgba(130, 120, 255, 0.16);

    background: rgba(10, 17, 40, 0.82);

    color: white;

    border-radius: 18px;

    padding: 20px;

    display: flex;
    align-items: center;

    gap: 14px;

    text-align: right;

    cursor: pointer;

    box-shadow:
        0 10px 35px rgba(0, 0, 0, 0.22);

    transition: 0.2s;

    backdrop-filter: blur(15px);
}

.level-card:hover {
    transform: translateY(-3px);

    border-color:
        rgba(112, 85, 255, 0.55);
}

.level-card.selected {
    border: 2px solid #7657ff;

    background:
        linear-gradient(
            135deg,
            rgba(66, 103, 255, 0.18),
            rgba(139, 61, 255, 0.18)
        );

    box-shadow:
        0 10px 35px rgba(75, 55, 220, 0.25);
}

.level-card strong {
    width: 55px;
    height: 55px;

    border-radius: 15px;

    background:
        linear-gradient(
            135deg,
            #4267ff,
            #8b3dff
        );

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

    flex-shrink: 0;

    font-size: 18px;
}

.level-card h3 {
    margin-bottom: 6px;
}

.level-card p {
    color: #9ca5bd;

    font-size: 13px;

    line-height: 1.4;
}


/* =========================
   زر البداية
========================= */

.start-btn {
    width: 100%;

    border: none;

    border-radius: 16px;

    padding: 17px;

    margin-top: 25px;

    background:
        linear-gradient(
            135deg,
            #4267ff,
            #8b3dff
        );

    color: white;

    font-size: 18px;

    font-weight: bold;

    cursor: pointer;

    transition: 0.2s;

    box-shadow:
        0 12px 30px rgba(75, 55, 220, 0.25);
}

.start-btn:hover:not(:disabled) {
    transform: translateY(-2px);

    box-shadow:
        0 16px 35px rgba(75, 55, 220, 0.35);
}

.start-btn:disabled {
    opacity: 0.4;

    cursor: not-allowed;

    box-shadow: none;
}


/* =========================
   شاشة الاختبار
========================= */

.quiz-screen {
    width: 100%;
}

.quiz-top {
    display: flex;

    justify-content: space-between;

    align-items: center;

    margin-bottom: 12px;

    font-size: 16px;

    color: #cbd2e5;
}

#score {
    color: #b18cff;

    font-weight: bold;
}


/* شريط التقدم */

.progress-bar {
    width: 100%;

    height: 9px;

    background: rgba(255, 255, 255, 0.08);

    border-radius: 20px;

    overflow: hidden;

    margin-bottom: 25px;
}

#progressFill {
    height: 100%;

    width: 0%;

    background:
        linear-gradient(
            90deg,
            #4267ff,
            #9b70ff
        );

    border-radius: 20px;

    transition: width 0.3s;
}


/* بطاقة السؤال */

.question-card {
    background:
        rgba(10, 17, 40, 0.86);

    border: 1px solid rgba(130, 120, 255, 0.16);

    border-radius: 22px;

    padding: 25px;

    text-align: center;

    box-shadow:
        0 15px 45px rgba(0, 0, 0, 0.25);

    backdrop-filter: blur(15px);
}


/* الصورة */

.question-image {
    width: 100%;

    height: 330px;

    display: flex;

    align-items: center;

    justify-content: center;

    overflow: hidden;

    border-radius: 18px;

    margin-bottom: 25px;

    background:
        rgba(255, 255, 255, 0.035);
}

.question-image img {
    width: 100%;
    height: 100%;

    object-fit: contain;

    border-radius: 18px;
}


.question-card h2 {
    font-size: 21px;

    margin-bottom: 20px;
}


/* =========================
   الخيارات
========================= */

.answers {
    display: grid;

    grid-template-columns: repeat(2, 1fr);

    gap: 14px;
}

.answer-btn {
    min-height: 65px;

    border-radius: 15px;

    border: 1px solid rgba(130, 120, 255, 0.18);

    background:
        rgba(24, 31, 58, 0.85);

    color: white;

    font-size: 17px;

    font-weight: bold;

    cursor: pointer;

    padding: 12px;

    transition: 0.2s;
}

.answer-btn:hover {
    transform: translateY(-2px);

    border-color: #7657ff;

    background:
        linear-gradient(
            135deg,
            rgba(66, 103, 255, 0.2),
            rgba(139, 61, 255, 0.2)
        );
}


/* إجابة صحيحة */

.answer-btn.correct {
    background:
        linear-gradient(
            135deg,
            #246b45,
            #31815a
        );

    border-color: #49c47d;
}


/* إجابة خاطئة */

.answer-btn.wrong {
    background:
        linear-gradient(
            135deg,
            #7c2935,
            #9d3342
        );

    border-color: #e35b6b;
}


/* تعطيل الخيار */

.answer-btn:disabled {
    cursor: default;
}


/* =========================
   التالي
========================= */

.next-btn {
    width: 100%;

    border: none;

    border-radius: 16px;

    padding: 16px;

    margin-top: 18px;

    background:
        linear-gradient(
            135deg,
            #4267ff,
            #8b3dff
        );

    color: white;

    font-size: 17px;

    font-weight: bold;

    cursor: pointer;

    transition: 0.2s;
}

.next-btn:hover {
    transform: translateY(-2px);
}


/* =========================
   النتيجة
========================= */

.result-screen {
    text-align: center;

    background:
        rgba(10, 17, 40, 0.86);

    border:
        1px solid rgba(130, 120, 255, 0.18);

    border-radius: 22px;

    padding: 45px 30px;

    box-shadow:
        0 15px 45px rgba(0, 0, 0, 0.25);
}

.result-icon {
    font-size: 75px;

    margin-bottom: 15px;
}

.result-screen h1 {
    font-size: 30px;

    margin-bottom: 12px;
}

.result-screen p {
    color: #9ca5bd;

    margin-bottom: 8px;
}

#finalScore {
    display: block;

    font-size: 40px;

    background:
        linear-gradient(
            135deg,
            #4965ff,
            #9b70ff
        );

    -webkit-background-clip: text;

    background-clip: text;

    color: transparent;

    margin-bottom: 20px;
}

.result-buttons {
    display: flex;

    gap: 12px;
}

.result-buttons .start-btn {
    margin-top: 0;
}

.home-result-btn {
    width: 100%;

    border: 1px solid rgba(130, 120, 255, 0.2);

    border-radius: 16px;

    background:
        rgba(24, 31, 58, 0.85);

    color: white;

    font-size: 17px;

    font-weight: bold;

    cursor: pointer;

    transition: 0.2s;
}

.home-result-btn:hover {
    background:
        linear-gradient(
            135deg,
            #4267ff,
            #8b3dff
        );
}


/* =========================
   الجوال
========================= */

@media (max-width: 700px) {

    .topbar {
        padding: 0 4%;

        height: 68px;
    }

    .title {
        font-size: 18px;
    }

    .back-btn {
        padding: 9px 12px;

        font-size: 14px;
    }

    .container {
        width: 92%;

        margin: 25px auto;
    }

    .intro {
        padding: 25px 18px;
    }

    .intro-icon {
        font-size: 50px;
    }

    .intro h1 {
        font-size: 26px;
    }

    .levels {
        grid-template-columns: 1fr;
    }

    .level-card {
        padding: 16px;
    }

    .question-card {
        padding: 15px;
    }

    .question-image {
        height: 270px;

        margin-bottom: 20px;
    }

    .question-card h2 {
        font-size: 19px;
    }

    .answers {
        grid-template-columns: repeat(2, 1fr);

        gap: 10px;
    }

    .answer-btn {
        min-height: 62px;

        font-size: 15px;

        padding: 10px 6px;
    }

    .result-buttons {
        flex-direction: column;
    }
}