:root {
    --primary-color: #FF6B6B;
    --secondary-color: #4ECDC4;
    --accent-color: #FFE66D;
    --dark-color: #2C3E50;
    --light-color: #F7F9FC;
    --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    font-family: var(--font-main);
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0;
    color: var(--dark-color);
}

.container {
    background: rgba(255, 255, 255, 0.95);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    width: 90%;
    max-width: 500px;
    text-align: center;
    animation: popIn 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

h1 {
    color: var(--primary-color);
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 0px rgba(0,0,0,0.1);
}

.btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    font-size: 1.2rem;
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    font-weight: bold;
    width: 100%;
    margin-top: 1rem;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(255, 107, 107, 0.4);
}

.btn:active {
    transform: translateY(-1px);
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    border: 2px solid #ddd;
    border-radius: 10px;
    font-size: 1rem;
    box-sizing: border-box; /* Fix padding issue */
    transition: border-color 0.3s;
}

input:focus {
    border-color: var(--secondary-color);
    outline: none;
}

/* Animations */
@keyframes popIn {
    0% { transform: scale(0.8); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

.quiz-option {
    background-color: white;
    border: 2px solid #ddd;
    padding: 15px;
    margin: 10px 0;
    border-radius: 15px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 1.1rem;
    font-weight: 500;
}

.quiz-option:hover {
    background-color: var(--light-color);
    border-color: var(--secondary-color);
    transform: translateX(5px);
}