:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --background: #111827;
    --card: #1f2937;
    --card-hover: #374151;
    --text: #ffffff;
    --text-secondary: #9ca3af;
}

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

body {
    font-family: system-ui, -apple-system, sans-serif;
    background-color: var(--background);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.5;
}

.screen {
    min-height: 100vh;
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hidden {
    display: none;
}

.content {
    max-width: 32rem;
    width: 100%;
    text-align: center;
    z-index: 1;
}

img {
    max-width: 100px; /* Adjust logo size */
    height: auto;
    position: absolute;
    top: 15px; /* Keep logo at the top */
    left: 15px; /* Position logo on the left */
    margin-right: 1rem; /* Optional, adjust as needed */
}

h1, h2, h3 {
    margin: 0; /* Remove margin for tighter spacing */
}

h1 {
    font-size: 30px;
    font-weight: bold;
    margin-bottom: 1px; /* Reduce the gap between lines */
}

h2 {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 1px; /* Reduce the gap between lines */
}

h3 {
    font-size: 15px;
    font-weight: bold;
    margin-bottom: 20px; /* Small gap under h3 */
}

p {
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.level-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.btn-primary, .btn-secondary {
    width: 100%;
    padding: 1rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

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

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

.btn-secondary {
    background-color: var(--card);
    color: var(--text);
}

.btn-secondary:hover {
    background-color: var(--card-hover);
}

.quiz-header {
    text-align: center;
    margin-bottom: 2rem;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 1rem;
    background-color: var(--background);
    z-index: 10;
}

.level {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.progress {
    font-size: 1.25rem;
    color: var(--text);
}

.total-time {
    color: var(--primary);
    font-size: 1.25rem;
    margin-top: 0.5rem;
}

.quiz-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    margin-top: 6rem;
}

.question {
    font-size: 2.5rem;
    font-weight: bold;
}

.options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    width: 100%;
    max-width: 24rem;
}

.timer {
    font-size: 1.25rem;
    color: var(--primary);
}

.results-card {
    background-color: var(--card);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 24rem;
}

.results-content {
    background-color: var(--background);
    padding: 1.5rem;
    border-radius: 0.5rem;
    margin: 1.5rem 0;
}

.level-display {
    font-size: 1.5rem;
    color: var(--text);
    margin-bottom: 0.5rem;
}

.score {
    font-size: 1.875rem;
    font-weight: bold;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.percentage {
    font-size: 1.5rem;
    color: var(--primary);
}

.time {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.floating-calculators {
    position: fixed;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

@keyframes float {
    0% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(10px, 10px) rotate(5deg); }
    50% { transform: translate(0, 20px) rotate(0deg); }
    75% { transform: translate(-10px, 10px) rotate(-5deg); }
    100% { transform: translate(0, 0) rotate(0deg); }
}