:root {
    --primary: #3498db;
    --primary-dark: #2980b9;
    --secondary: #2c3e50;
    --success: #27ae60;
    --danger: #e74c3c;
    --light: #ecf0f1;
    --dark: #2c3e50;
    --gray: #95a5a6;
    --shadow: 0 4px 12px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f0f4f8, #d9e4f5);
    color: var(--dark);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    line-height: 1.6;
}

.container {
    max-width: 600px;
    width: 100%;
    margin: 0 auto;
}

.screen {
    background: white;
    border-radius: 16px;
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

/* Menu-Specific Enhancements */
#menu {
    background: linear-gradient(135deg, white 0%, rgba(52, 152, 219, 0.05) 100%);
    padding: 40px 30px;
    position: relative;
    overflow: hidden;
}

#menu::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--success));
}

.menu-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    animation: bounceIn 1s ease-out;
}

@keyframes bounceIn {
    0% { transform: scale(0.3); opacity: 0; }
    50% { transform: scale(1.05); }
    70% { transform: scale(0.9); }
    100% { transform: scale(1); opacity: 1; }
}

h1 {
    color: var(--secondary);
    margin-bottom: 15px;
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: slideInDown 0.8s ease-out;
}

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

.menu-subtitle {
    color: var(--gray);
    margin-bottom: 30px;
    font-size: 1.1rem;
    max-width: 80%;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

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

.menu-footer {
    margin-top: 25px;
    opacity: 0.7;
}

.menu-footer small {
    color: var(--gray);
    font-size: 0.85rem;
}

.btn {
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 12px 25px;
    margin: 10px;
    border-radius: 50px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 8px rgba(52, 152, 219, 0.3);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 4px 8px rgba(52, 152, 219, 0.3); }
    50% { box-shadow: 0 4px 12px rgba(52, 152, 219, 0.5); }
    100% { box-shadow: 0 4px 8px rgba(52, 152, 219, 0.3); }
}

.btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(52, 152, 219, 0.4);
    animation: none;
}

.btn-primary {
    background-color: var(--primary);
}

.btn-success {
    background-color: var(--success);
    box-shadow: 0 4px 8px rgba(39, 174, 96, 0.3);
}

.btn-success:hover {
    background-color: #219653;
    box-shadow: 0 6px 12px rgba(39, 174, 96, 0.4);
}

.btn-danger {
    background-color: var(--danger);
    box-shadow: 0 4px 8px rgba(231, 76, 60, 0.3);
}

.btn-danger:hover {
    background-color: #c0392b;
    box-shadow: 0 6px 12px rgba(231, 76, 60, 0.4);
}

h2 {
    color: var(--secondary);
    margin-bottom: 15px;
    font-size: 1.8rem;
}

p {
    color: var(--gray);
    margin-bottom: 20px;
    font-size: 1.1rem;
}

#loading {
    color: var(--primary);
    font-size: 1.2rem;
    font-weight: 500;
    padding: 20px;
}

#news-card {
    background: var(--light);
    padding: 25px;
    margin: 25px 0;
    border-radius: 12px;
    border-left: 6px solid var(--primary);
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    transition: var(--transition);
}

#headline {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--secondary);
    line-height: 1.5;
}

.progress-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.progress-bar {
    flex-grow: 1;
    height: 10px;
    background-color: #e0e0e0;
    border-radius: 5px;
    margin: 0 15px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--success));
    border-radius: 5px;
    transition: width 0.5s ease;
}

#score {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--secondary);
    margin: 15px 0;
}

#feedback {
    margin: 15px 0;
    padding: 15px;
    border-radius: 10px;
    font-weight: 600;
    transition: var(--transition);
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.correct { 
    background-color: rgba(39, 174, 96, 0.15); 
    color: var(--success); 
    border-left: 4px solid var(--success);
}

.incorrect { 
    background-color: rgba(231, 76, 60, 0.15); 
    color: var(--danger); 
    border-left: 4px solid var(--danger);
}

.explanation {
    font-size: 0.9rem;
    font-weight: normal;
    margin-top: 8px;
    color: var(--gray);
}

.buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 20px 0;
}

.result-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.win { color: var(--success); }
.lose { color: var(--danger); }

@media (max-width: 600px) {
    .screen {
        padding: 20px;
    }
    
    #menu {
        padding: 30px 20px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        margin: 5px 0;
    }
    
    .menu-icon {
        font-size: 3rem;
    }
    
    .menu-subtitle {
        font-size: 1rem;
        max-width: 95%;
    }
}