img {
    -webkit-user-drag: none;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: transparent;
    color: #fff;
    overflow: auto;
}

.background-gif {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    object-fit: cover;
    opacity: 0.2;
}

.logo-header {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 20px;
    z-index: 0;
    position: relative;
}

.logo-header img {
    max-height: 30vh;
    width: auto;
}

.quiz-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 5vh;
    padding: 20px;
    border-radius: 16px;
    background-color: rgba(0, 0, 0, 0.4);
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    z-index: 1;
    animation: fadeIn 0.8s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

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

.answers {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 30px;
    width: 100%;
    justify-items: center;
}

button.answer-btn {
    border: none;
    background: none;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease, outline 0.3s ease;
    border-radius: 12px;
    overflow: hidden;
    width: 100%;
}

button.answer-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

.answer-btn img {
    max-width: 100%;
    max-height: 180px;
    width: auto;
    height: auto;
    border-radius: 12px;
    display: block;
    transition: filter 0.3s ease;
    filter: grayscale(100%) brightness(90%) contrast(200%) saturate(0%);
    object-fit: contain;
}

.quiz-container > img {
    max-width: 100%;
    max-height: 40vh;
    width: auto;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    margin-top: 10px;
    object-fit: contain;
}

.correct {
    outline: 3px solid #32cd32 !important;
    box-shadow: 0 0 15px #32cd32aa !important;
    filter: none !important;
}

.incorrect {
    outline: 3px solid #ff4c4c !important;
    box-shadow: 0 0 15px #ff4c4c88 !important;
    filter: none !important;
}

.answer-btn:disabled {
    opacity: 1;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.next-question-btn {
    padding: 10px 20px;
    font-size: 18px;
    background-color: #333;
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.next-question-btn:hover {
    background-color: #555;
    transform: scale(1.05);
}

.button-row {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
    flex-wrap: wrap;
}

#stats-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #333;
    color: #fff;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    font-size: 24px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    z-index: 1001;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    transition: background 0.3s ease, transform 0.3s ease;
    animation: fadeInTop 1s ease forwards;
}

#stats-toggle:hover {
    background: #555;
    transform: scale(1.1);
}

#stats-panel {
    position: fixed;
    bottom: 80px;
    right: 20px;
    background: rgba(0, 0, 0, 0.85);
    color: #fff;
    padding: 16px 24px;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.4);
    z-index: 1000;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    max-width: 280px;
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

#stats-panel.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(20px);
}

#stats-panel h3 {
    margin: 0 0 10px;
    font-size: 18px;
}

#stats-panel ul {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 16px;
}

#stats-panel li {
    margin-bottom: 6px;
}

#stats-toggle.rotated {
    transform: rotate(180deg);
}

#logout-form {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1001;
    animation: fadeInTop 1s ease forwards;
}

.logout-btn {
    padding: 8px 16px;
    font-size: 16px;
    background-color: #333;
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none; 
    display: inline-block; 
    margin-bottom: 20px;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.logout-btn:hover {
    background-color: #555;
    transform: scale(1.05);
}


.login-container {
    max-width: 400px;
    margin: 100px auto;
    padding: 30px;
    background-color: #222;
    border-radius: 15px;
    box-shadow: 0 0 20px rgba(0,0,0,0.5);
    color: #fff;
    animation: fadeIn 0.8s ease forwards;
}

.form-box {
    display: flex;
    flex-direction: column;
}

.input-field {
    padding: 10px;
    margin-bottom: 15px;
    background: #333;
    border: 1px solid #555;
    border-radius: 8px;
    color: #fff;
}

.input-field:focus {
    border-color: #888;
    outline: none;
    background: #2b2b2b;
}

.button-row {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    margin-top: 20px;
}

.main-btn {
    flex: 1;
    padding: 10px;
    background-color: #4caf50;
    border: none;
    border-radius: 8px;
    color: white;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
    font-size: 15px;
}

.main-btn:hover {
    background-color: #45a049;
}

.secondary-btn {
    flex: 1;
    padding: 10px;
    background-color: #008cba;
    border: none;
    border-radius: 8px;
    color: white;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
    font-size: 15px;
}

.secondary-btn:hover {
    background-color: #007bb5;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    font-size: 14px;
}

.error-message {
    color: #ff4c4c;
    margin-bottom: 20px;
    font-weight: bold;
    text-align: center;
}

.back-to-quiz {
    top: 10px;
    left: 10px;
    z-index: 1000;
    background-color: #333;
    color: white;
    padding: 10px 14px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 16px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.back-to-quiz:hover {
    background-color: #555;
    transform: scale(1.05);
}

/* Image Modal Styles */
.image-modal {
    display: none;
    position: fixed;
    z-index: 5000;
    left: 0;
    top: 0;
    width: 100vw;
    height: 100vh;
    overflow: auto;
    background-color: rgba(0,0,0,0.85);
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s;
}
.image-modal[style*="display: flex"] {
    display: flex !important;
}
.modal-content {
    max-width: 90vw;
    max-height: 80vh;
    border-radius: 16px;
    box-shadow: 0 0 30px rgba(0,0,0,0.7);
    background: #222;
    padding: 8px;
    object-fit: contain;
}
.close-modal {
    position: absolute;
    top: 30px;
    left: 30px;
    color: #fff;
    font-size: 48px;
    font-weight: bold;
    cursor: pointer;
    z-index: 5100;
    text-shadow: 0 2px 8px #000;
    transition: color 0.2s;
}
.close-modal:hover {
    color: #ff4c4c;
}