:root {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --html-color: #e34c26;
    --css-color: #264de4;
    --javascript-color: #f0db4f;
    --jquery-color: #0769AD;
    --bootstrap-color: #7952B3;
    --vue-color: #42B883;
    --php-color: #777BB4;
    --oop-color: #4f46e5;
    --database-color: #00758F;
    --success-color: #2ecc71;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --border-radius: 10px;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

body {
    background-color: #f5f7ff;
    color: #212529;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
}

/* Start Controls Element */
.controls-row {
    margin-bottom: 30px;
}

.search-box {
    position: relative;
}

.search-box input {
    width: 100%;
    padding: 12px 45px 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.search-box input:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

.search-box i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #777;
}

/* Filter With Language */
.language-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 15px;
}

.lang-filter {
    padding: 8px 15px;
    background-color: white;
    border: 2px solid #e0e0e0;
    border-radius: 30px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    font-size: 0.9rem;
}

.lang-filter:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.lang-filter.active {
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.lang-filter.all.active {
    background-color: var(--secondary-color);
}

.lang-filter.html.active {
    background-color: var(--html-color);
}

.lang-filter.css.active {
    background-color: var(--css-color);
}

.lang-filter.javascript.active {
    background-color: var(--javascript-color);
    color: #333;
}

.lang-filter.jquery.active {
    background-color: var(--jquery-color);
    color: white;
}

.lang-filter.bootstrap.active {
    background-color: var(--bootstrap-color);
    color: white;
}

.lang-filter.vue.active {
    background-color: var(--vue-color);
    color: white;
}

.lang-filter.php.active {
    background-color: var(--php-color);
    color: white;
}

.lang-filter.oop.active {
    background-color: var(--oop-color);
    color: white;
}

.lang-filter.database.active {
    background-color: var(--database-color);
    color: white;
}

/* End Controls Element */

/* Start Quize Card */
.quiz-card {
    background-color: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    height: 100%;
    margin-bottom: 25px;
    border-top: 5px solid var(--primary-color);
}

.quiz-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

/* Colors of languages */
.quiz-card.html {
    border-top-color: var(--html-color);
}

.quiz-card.css {
    border-top-color: var(--css-color);
}

.quiz-card.javascript {
    border-top-color: var(--javascript-color);
}

.quiz-card.jquery {
    border-top-color: var(--jquery-color);
}

.quiz-card.bootstrap {
    border-top-color: var(--bootstrap-color);
}

.quiz-card.vue {
    border-top-color: var(--vue-color);
}

.quiz-card.php {
    border-top-color: var(--php-color);
}

.quiz-card.oop {
    border-top-color: var(--oop-color);
}

.quiz-card.database {
    border-top-color: var(--database-color);
}

.quiz-header {
    padding: 20px;
    background-color: #f8f9fa;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.quiz-language {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    color: white;
}

.quiz-language.html {
    background-color: var(--html-color);
}

.quiz-language.css {
    background-color: var(--css-color);
}

.quiz-language.javascript {
    background-color: var(--javascript-color);
    color: #333;
}

.quiz-language.jquery {
    background-color: var(--jquery-color);
}

.quiz-language.bootstrap {
    background-color: var(--bootstrap-color);
}

.quiz-language.vue {
    background-color: var(--vue-color);
}

.quiz-language.php {
    background-color: var(--php-color);
}

.quiz-language.oop {
    background-color: var(--oop-color);
}

.quiz-language.database {
    background-color: var(--database-color);
}

.quiz-body {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.quiz-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: #212529;
}

.quiz-description {
    color: #666;
    margin-bottom: 20px;
    flex-grow: 1;
}

.quiz-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    font-size: 0.85rem;
    color: #777;
}

.quiz-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.quiz-difficulty {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.difficulty-easy {
    background-color: rgba(46, 204, 113, 0.2);
    color: var(--success-color);
}

.difficulty-medium {
    background-color: rgba(243, 156, 18, 0.2);
    color: var(--warning-color);
}

.difficulty-hard {
    background-color: rgba(231, 76, 60, 0.2);
    color: var(--danger-color);
}

.quiz-footer {
    padding: 15px 20px;
    background-color: #f9f9f9;
    border-top: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.btn-start {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.btn-start:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    color: white;
}

/* Quize Page */
.quiz-container {
    display: none;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 30px;
    margin-top: 20px;
}

/* Result Page */
.results-container {
    display: none;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 30px;
    margin-top: 20px;
    text-align: center;
}

.container {
    max-width: 1400px;
}

.row {
    margin-left: -10px;
    margin-right: -10px;
}

.col-md-6 {
    padding-left: 10px;
    padding-right: 10px;
}

/* End Quize Card */

@media (max-width: 768px) {
    .language-filters {
        justify-content: center;
    }

    .lang-filter {
        padding: 6px 12px;
        font-size: 0.85rem;
    }

    .quiz-card {
        margin-bottom: 20px;
    }
}

@media (max-width: 576px) {
    .col-md-6 {
        padding-left: 5px;
        padding-right: 5px;
    }

    .quiz-header {
        padding: 15px;
    }

    .quiz-body {
        padding: 15px;
    }

    .quiz-footer {
        padding: 12px 15px;
    }

    .btn-start {
        padding: 8px 15px;
        font-size: 0.9rem;
    }
}

@media (max-width: 992px) {
    .col-md-6 {
        flex: 0 0 100% !important;
        max-width: 100% !important;
        margin-bottom: 30px;
    }

    .question-title {
        font-size: 12px !important;
    }

    .question-timer {
        font-size: 20px !important;
    }
}

.sticky-top {
    top: 80px !important;
}

.navbar-toggler {
    z-index: 1050 !important;
}

.navbar {
    position: relative !important;
    z-index: 1050 !important;
}

main,
section {
    position: relative;
    z-index: 1;
}

.modal-backdrop {
    z-index: 1040 !important;
}

.modal {
    z-index: 1050 !important;
}


.quiz-question-box {
    padding: 20px;
}

.question-text {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 20px;
}

.options-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.option {
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    cursor: pointer;
    transition: .2s;
}

.option:hover {
    background: #f8f9fa;
}

.option.selected {
    background: #0d6efd;
    color: #fff;
    border-color: #0d6efd;
}

.quiz-options .btn {
    white-space: normal;
    word-wrap: break-word;
    overflow-wrap: break-word;
    text-align: start;
    font-weight: bold;
}

.results-container {
    display: none;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 30px;
    margin-top: 20px;
    text-align: center;
}

.results-header {
    margin-bottom: 30px;
}

.score-circle {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    margin: 0 auto 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    background: conic-gradient(var(--success-color) 0% 75%, #e0e0e0 75% 100%);
}

.score-text {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.results-details {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.result-item {
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: var(--border-radius);
    text-align: center;
}

.btn-back {
    padding: 12px 30px;
    margin: 20px 10px;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    background-color: #f8f9fa;
    color: var(--dark-color);
    border: 2px solid #e0e0e0;
}

#yourBranche {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background: url('data:image/svg+xml;utf8,<svg fill="%23333" height="24" viewBox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"><path d="M7 10l5 5 5-5z"/></svg>') no-repeat;
    background-position: left 10px center;
    background-size: 1em;
    padding-left: 2.5em;
    cursor: pointer;
    text-align: right;
    border-radius: 0.5rem;
    border: 1px solid #ccc;
    height: 50px;
}

#yourBranche option {
    direction: rtl;
    unicode-bidi: plaintext;
}