/* /////////Body///////////// */
html, body {
    margin: 0;
    height: 100%;
    background: linear-gradient(-45deg, #0f0c29, #302b63, #24243e, #1a1a1a);
    background-size: 400% 400%;
    animation: neonFlow 20s ease infinite;
    font-family: 'Orbitron', sans-serif;
    color: white;
    overflow-x: hidden;
}

@keyframes neonFlow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Effet lumineux */
body::after {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: radial-gradient(circle, rgba(0,255,255,0.08) 0%, transparent 70%);
    pointer-events: none;
    mix-blend-mode: screen;
}

/* ////////////Bannière header//////////// */
.banner {
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    gap: 50px;
    padding: 0px 20px;
    background-color: rgba(0, 0, 0, 0.6);
    border-bottom: 2px solid #00ffff;
    box-shadow: 0 0 20px #00ffff80;
}

.logo {
    height: 250px;
    filter: drop-shadow(0 0 5px #0ff);
}

.title-group h1 {
    font-size: 3.5rem;
    margin: 0;
    text-shadow: 0 0 8px #00f0ff;
}

.slogan {
    margin: 0;
    font-size: 1rem;
    color: #ccc;
    text-shadow: 0 0 4px #00ffff;
}

/* /////////Menu de navigation//////////// */
.menu {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10%;
    margin-top: 20px;
}

.btn-nav {
    padding: 10px 18px;
    background: linear-gradient(135deg, #00f0ff, #006eff);
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    font-weight: bold;
    box-shadow: 0 0 10px #00f0ff;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-nav:hover {
    transform: scale(1.05);
    box-shadow: 0 0 15px #00ffff, 0 0 5px #00f0ff inset;
}

.wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1;
}

/* /////////Section de présentation//////////// */
.presentation {
    max-width: 900px;
    margin: 80px auto;
    background-color: rgba(0, 0, 0, 0.6);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 0 20px #00ffff80;
    text-align: center;
    animation: fadeIn 2s ease-in;
}

.presentation h2 {
    font-size: 2.2rem;
    margin-bottom: 20px;
    color: #00f0ff;
    text-shadow: 0 0 8px #00f0ff;
}

.presentation p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #eee;
    margin-bottom: 25px;
}

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

/* /////////Footer//////////// */
.footer {
    background-color: rgba(0, 0, 0, 0.7);
    padding: 20px 0;
    text-align: center;
    border-top: 2px solid #00ffff;
    box-shadow: 0 -0.5px 20px #00ffff40 inset;
    margin-top: 80px;
    margin-bottom: 0;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
    color: #ccc;
    font-size: 0.95rem;
}

.footer-content p {
    margin: 8px 0;
    text-shadow: 0 0 4px #00f0ff80;
}

.footer .designer {
    color: #00ffff;
    font-weight: bold;
    text-shadow: 0 0 5px #00ffff;
}

.footer-link {
    color: #00ffff;
    text-decoration: none;
    margin-left: 8px;
    font-weight: bold;
    transition: text-shadow 0.3s, color 0.3s;
}

.footer-link:hover {
    color: #ffffff;
    text-shadow: 0 0 8px #00ffff;
}

/* ////////////Formulaire de connexion//////////// */
.auth-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(6px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 999;
}

.auth-container {
    background-color: #101020;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 0 25px #00ffff80;
    max-width: 800px;
    width: 90%;
    position: relative;
}

.close-auth {
    position: absolute;
    top: 10px; right: 15px;
    font-size: 1.4rem;
    cursor: pointer;
    color: #00ffff;
    text-shadow: 0 0 6px #00ffff;
}

.auth-box {
    display: flex;
    gap: 40px;
    justify-content: space-between;
    flex-wrap: wrap;
}

.auth-form {
    flex: 1;
    min-width: 300px;
}

.auth-form h2 {
    color: #00f0ff;
    text-shadow: 0 0 4px #00ffff;
    margin-bottom: 15px;
}

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

.auth-form input {
    padding: 10px;
    background-color: #1b1b2f;
    border: none;
    border-radius: 6px;
    color: white;
    outline: none;
}

.auth-form button {
    padding: 10px;
    background: linear-gradient(135deg, #00f0ff, #006eff);
    border: none;
    border-radius: 6px;
    color: white;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 0 10px #00ffff80;
    transition: transform 0.2s, box-shadow 0.2s;
}

.auth-form button:hover {
    transform: scale(1.05);
    box-shadow: 0 0 15px #00ffff;
}

/* ///////////Selection-quiz//////////// */
.selection-quiz {
    max-width: 1000px;
    margin: 60px auto;
    text-align: center;
    padding: 20px;
}

.selection-quiz h2 {
    font-size: 2rem;
    color: #00f0ff;
    margin-bottom: 40px;
    text-shadow: 0 0 8px #00ffff;
}

.quiz-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    padding: 0 20px;
}

.quiz-card {
    background: linear-gradient(135deg, #1b1b2f, #0f0c29);
    color: white;
    padding: 30px 20px;
    border-radius: 15px;
    font-weight: bold;
    text-decoration: none;
    box-shadow: 0 0 10px #00ffff80;
    transition: transform 0.2s, box-shadow 0.2s;
}

.quiz-card:hover {
    transform: scale(1.05);
    box-shadow: 0 0 15px #00ffff, 0 0 5px #00f0ff inset;
}

/* ///////////Difficulte//////////// */
.difficulty-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-color: rgba(0,0,0,0.85);
    backdrop-filter: blur(4px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 999;
}

.difficulty-box {
    background-color: #101020;
    padding: 40px;
    border-radius: 15px;
    text-align: center;
    max-width: 400px;
    width: 90%;
    box-shadow: 0 0 25px #00ffff80;
    position: relative;
}

.difficulty-box h3 {
    color: #00f0ff;
    font-size: 1.5rem;
    margin-bottom: 20px;
    text-shadow: 0 0 5px #00ffff;
}

.difficulty-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.btn-difficulty {
    padding: 10px 18px;
    background: linear-gradient(135deg, #00f0ff, #006eff);
    border-radius: 8px;
    color: white;
    font-weight: bold;
    text-decoration: none;
    box-shadow: 0 0 10px #00ffff80;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-difficulty:hover {
    transform: scale(1.05);
    box-shadow: 0 0 15px #00ffff;
}

.close-popup {
    position: absolute;
    top: 10px; right: 15px;
    font-size: 1.2rem;
    cursor: pointer;
    color: #00ffff;
    text-shadow: 0 0 5px #00ffff;
}

/* ///////////Score/////////// */
.score-page {
    max-width: 1200px;
    margin: 60px auto;
    padding: 0 20px;
    text-align: center;
}

.score-page h2 {
    font-size: 2.2rem;
    color: #00f0ff;
    margin-bottom: 40px;
    text-shadow: 0 0 8px #00ffff;
}

.score-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.jeu-score {
    background-color: rgba(0, 0, 0, 0.6);
    border-radius: 15px;
    padding: 20px;
    box-shadow: 0 0 15px #00ffff40;
}

.jeu-score h3 {
    color: #00f0ff;
    margin-bottom: 15px;
}

.niveau-group {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.niveau {
    background-color: #1b1b2f;
    border-radius: 10px;
    padding: 10px;
    text-align: left;
}

.niveau h4 {
    color: #fff;
    margin-bottom: 8px;
    font-size: 1rem;
    border-bottom: 1px solid #00ffff40;
    padding-bottom: 4px;
}

.liste-score {
    max-height: 160px;
    overflow-y: auto;
    padding-left: 0;
    margin: 0;
    list-style: none;
}

.liste-score li {
    padding: 5px 10px;
    color: #ddd;
    border-bottom: 1px solid #ffffff10;
}

.liste-score li span {
    font-weight: bold;
    color: #00ffff;
    margin-right: 8px;
}

.score-table {
    width: 100%;
    min-height: 300px;
    display: block;
    display: inline-table;
    text-align: center;
    font-family: Orbitron, sans-serif;
    table-layout: auto;
}

.score-table th,
.score-table td {
    padding: 20px;
    border: 1px solid #ccc;
    text-align: center;
    vertical-align: top; 
}

.score-table th {
    background-color: #222;
    color: #fff;
}

/* /////////Quiz//////////// */
.quiz-container {
    max-width: 800px;
    margin: 60px auto;
    padding: 20px;
    background: rgba(0, 0, 0, 0.85);
    border: 2px solid cyan;
    border-radius: 15px;
    color: #fff;
    font-family: 'Orbitron', sans-serif;
    text-align: center;
    box-shadow: 0 0 25px cyan;
}

.question-block {
    margin-top: 30px;
}

.question {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.btn-reponse {
    display: block;
    margin: 10px auto;
    padding: 12px 24px;
    background-color: #111;
    border: 2px solid cyan;
    border-radius: 10px;
    color: white;
    font-size: 1rem;
    cursor: pointer;
    transition: 0.2s ease;
}

.btn-reponse:hover {
    background-color: cyan;
    color: black;
}

.quiz-message {
    margin: 20px auto;
    padding: 10px;
    max-width: 500px;
    font-size: 1.2rem;
    color: #fff;
    background-color: rgba(0, 255, 255, 0.2);
    border: 2px solid cyan;
    border-radius: 10px;
    animation: fadeOut 3s forwards;
}

@keyframes fadeOut {
    0%   { opacity: 1; }
    70%  { opacity: 1; }
    100% { opacity: 0; display: none; }
}

.feedback {
    font-size: 1.2rem;
    margin-top: 10px;
    font-weight: bold;
    text-shadow: 0 0 5px #000;
}

/* /////////Forum//////////// */
.forum-container {
    max-width: 1000px;
    margin: auto;
    margin-top: 5%;
    padding: 2rem;
    background: #0a0a0a;
    color: #f0f0f0;
    border-radius: 15px;
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.3);
    font-family: 'Orbitron', sans-serif;
}

/* Formulaire création de sujet */
.nouveau-sujet {
    background: #121212;
    padding: 1.5rem;
    border: 1px solid #00ffff50;
    border-radius: 10px;
    margin-bottom: 2rem;
}

.nouveau-sujet h3 {
    margin-bottom: 1rem;
    color: #00ffff;
}

.nouveau-sujet input,
.nouveau-sujet textarea {
    width: 100%;
    background: #1e1e1e;
    color: #ffffff;
    border: 1px solid #00ffff30;
    padding: 0.8rem;
    margin-bottom: 1rem;
    border-radius: 5px;
    font-family: inherit;
}

.nouveau-sujet button {
    background: #00ffff;
    color: #000;
    border: none;
    padding: 0.7rem 1.5rem;
    font-weight: bold;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

.nouveau-sujet button:hover {
    background: #00cccc;
}

/* Tableau des sujets */
.forum-table {
    width: 100%;
    border-collapse: collapse;
    background-color: #101010;
    border-radius: 10px;
    overflow: hidden;
    margin-top: 1rem;
}

.forum-table thead {
    background: #00ffff20;
    color: #00ffff;
    text-transform: uppercase;
}

.forum-table th,
.forum-table td {
    padding: 1rem;
    text-align: center;
    border-bottom: 1px solid #00ffff10;
}

.forum-table tbody tr:hover {
    background: #1e1e1e;
}

.forum-table a {
    color: #00ffff;
    text-decoration: none;
}

.forum-table a:hover {
    text-decoration: underline;
}

.reponse {
    background: #1a1a1a;
    padding: 1rem;
    margin: 1rem 0;
    border-left: 3px solid #00ffff;
    border-radius: 8px;
    color: #fff;
}

.reponse p {
    font-weight: bold;
    color: #00ffff;
    margin-bottom: 0.5rem;
}