:root {
    color-scheme: light;
    --bg-color: #f4f7f9;
    --text-color: #1f2a33;
    --primary-color: #1e6cff;
    --primary-hover: #0e4fe0;
    --container-bg: #ffffff;
    --shadow: 0 10px 30px rgba(12, 24, 36, 0.12);
    --border-radius: 16px;
    --font-family: 'Helvetica Neue', Arial, sans-serif;
    --muted: #6a7580;
    --border-color: #d7dde2;
    --card-bg: #ffffff;
    --progress-bg: #e4e9ee;
    --answer-bg: #f7f9fb;
    --toggle-bg: #f0f3f7;
    --toggle-text: #1f2a33;
}

body[data-theme="dark"] {
    color-scheme: dark;
    --bg-color: #0f141a;
    --text-color: #e7edf3;
    --primary-color: #5aa2ff;
    --primary-hover: #3a86f7;
    --container-bg: #151b22;
    --shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
    --muted: #98a7b5;
    --border-color: #2a3440;
    --card-bg: #1a212b;
    --progress-bg: #233042;
    --answer-bg: #1c2430;
    --toggle-bg: #1f2833;
    --toggle-text: #e7edf3;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    padding: 4.5rem 1rem 2rem;
}

.container {
    background-color: var(--container-bg);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    width: 90%;
    max-width: 550px;
    overflow: hidden;
}

.theme-toggle {
    position: fixed;
    top: 1.25rem;
    right: 1.5rem;
    background-color: var(--toggle-bg);
    color: var(--toggle-text);
    border: 1px solid var(--border-color);
    padding: 0.55rem 1rem;
    border-radius: 999px;
    cursor: pointer;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    z-index: 10;
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.theme-toggle:hover {
    border-color: var(--primary-color);
}

.theme-icon {
    font-size: 1rem;
    line-height: 1;
}

.screen {
    display: none;
}

.screen.active {
    display: block;
    animation: fadeIn 0.5s ease-in-out;
}

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

h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

p {
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 2rem;
    color: var(--muted);
}

#start-btn, #restart-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.2s;
}

#start-btn:hover, #restart-btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
}

.progress-bar {
    width: 100%;
    height: 10px;
    background-color: var(--progress-bg);
    border-radius: 5px;
    margin-bottom: 2rem;
    overflow: hidden;
}

.progress {
    height: 100%;
    background-color: var(--primary-color);
    width: 0;
    transition: width 0.3s ease-in-out;
}

#question-text {
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.answers-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.answer-btn {
    background-color: var(--answer-bg);
    color: var(--primary-color);
    border: 2px solid var(--border-color);
    padding: 1rem;
    font-size: 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.answer-btn:hover {
    background-color: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

#result-type {
    color: var(--primary-color);
    font-size: 2.7rem;
    margin: 0.75rem 0 1rem;
}

#result-description {
    font-size: 1.1rem;
    text-align: left;
    margin-bottom: 2rem;
    color: var(--muted);
}

.result-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    padding: 1.75rem 1.75rem 1.5rem;
    text-align: left;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.result-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    background-color: var(--toggle-bg);
    color: var(--toggle-text);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

@media (max-width: 600px) {
    .theme-toggle {
        right: 1rem;
        top: 1rem;
    }

    .container {
        padding: 2rem 1.5rem;
    }
}