:root {
    --primary: #2d6a4f;
    /* Modern deep green */
    --primary-light: #52b788;
    /* Soft green */
    --primary-dark: #1b4332;
    --secondary: #74c69d;
    /* Accenting green */
    --accent: #d8f3dc;
    /* Very light green background */
    --bg-gradient: linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%);
    --card-bg: #ffffff;
    --glass-border: rgba(226, 232, 240, 0.8);
    --text-main: #334155;
    /* Neutral dark gray */
    --text-muted: #64748b;
    /* Neutral gray */
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.01);
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-gradient);
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.main-header {
    padding: 20px 0;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--primary);
}

.logo span {
    color: var(--secondary);
}

main {
    padding: 40px 0;
}

.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 40px;
    box-shadow: var(--shadow);
}

.btn {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(79, 70, 229, 0.39);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.progress-container {
    margin-bottom: 30px;
}

.progress-bar {
    height: 8px;
    background: #e2e8f0;
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.question-group {
    display: none;
}

.question-group.active {
    display: block;
    animation: fadeIn 0.5s ease-out;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.options-grid {
    display: grid;
    gap: 15px;
    margin-top: 20px;
}

.option-item {
    position: relative;
}

.option-item input {
    position: absolute;
    opacity: 0;
}

.option-label {
    display: block;
    padding: 20px;
    background: white;
    border: 2px solid transparent;
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 500;
}

.option-item input:checked+.option-label {
    border-color: var(--primary);
    background: rgba(79, 70, 229, 0.05);
    color: var(--primary);
}

.option-label:hover {
    background: #f1f5f9;
}

.main-footer {
    text-align: center;
    padding: 40px 0;
    color: var(--text-muted);
}

/* Modern Footer Styles */
.modern-footer {
    background: #0f172a;
    color: #94a3b8;
    padding: 80px 0 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.modern-footer .container {
    max-width: 1100px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-brand .footer-logo {
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 800;
}

.footer-logo-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    box-shadow: 0 0 10px #22c55e;
}

.footer-brand .footer-desc {
    font-size: 0.95rem;
    line-height: 1.7;
    max-width: 320px;
}

.footer-col h4 {
    color: #ffffff;
    font-size: 0.85rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    margin-bottom: 25px;
    text-transform: uppercase;
}

.footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.footer-col ul li a:hover {
    color: #22c55e;
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    font-size: 0.85rem;
}

.footer-socials {
    display: flex;
    gap: 20px;
}

.footer-socials a {
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    transition: color 0.2s;
}

.footer-socials a:hover {
    color: #ffffff;
}

@media (max-width: 900px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .footer-brand {
        grid-column: span 2;
        margin-bottom: 20px;
    }
}

@media (max-width: 600px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .footer-brand {
        grid-column: span 1;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}