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

:root {
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --bg-primary: #ffffff;
    --bg-secondary: #f3f4f6;
    --bg-card: #ffffff;
    --border: #e5e7eb;
    --accent: #059669;
    --accent-hover: #047857;
    --accent-light: #d1fae5;
    --nav-bg: #0f172a;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--text-primary);
    background: var(--bg-secondary);
    line-height: 1.6;
}

.nav {
    background: var(--nav-bg);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand {
    font-weight: 600;
    font-size: 1.125rem;
    color: white;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: white;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
}

.section {
    animation: fadeIn 0.4s ease-in;
}

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

.hero {
    text-align: center;
    margin-bottom: 4rem;
    padding: 2rem 0;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.5;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.hero-features span {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.intro-content {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.intro-content h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.intro-content p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 1.0625rem;
}

.intro-content p:last-child {
    margin-bottom: 0;
}

.btn-primary {
    background: var(--accent);
    color: white;
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    display: inline-block;
    text-decoration: none;
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-large {
    width: 100%;
    padding: 1rem;
    font-size: 1.125rem;
}

.btn-secondary {
    background: var(--bg-primary);
    color: var(--accent);
    padding: 0.75rem 2rem;
    border: 2px solid var(--accent);
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-block;
    text-decoration: none;
}

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

.btn-text {
    background: none;
    border: none;
    color: var(--accent);
    font-size: 0.9375rem;
    cursor: pointer;
    padding: 0.5rem;
    margin-top: 2rem;
}

.btn-text:hover {
    text-decoration: underline;
}

.form-header {
    text-align: center;
    margin-bottom: 3rem;
}

.form-header h2 {
    font-size: 1.875rem;
    margin-bottom: 0.5rem;
}

.form-header p {
    color: var(--text-secondary);
    font-size: 1.0625rem;
}

.form-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.form-card h3 {
    font-size: 1.375rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-size: 0.9375rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.875rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s;
    background: var(--bg-primary);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.1);
}

.question-group {
    margin-bottom: 2.5rem;
    padding-bottom: 2.5rem;
    border-bottom: 1px solid var(--border);
}

.question-group:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.question-group label {
    display: block;
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    line-height: 1.4;
}

.q-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--accent);
    color: white;
    border-radius: 50%;
    font-size: 0.875rem;
    font-weight: 700;
    margin-right: 0.75rem;
}

.question-help {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-style: italic;
    padding-left: 2.25rem;
}

.question-group textarea {
    width: 100% !important;
    min-height: 200px !important;
    max-height: 400px !important;
    padding: 1rem !important;
    border: 1px solid var(--border) !important;
    border-radius: 6px !important;
    font-size: 1rem !important;
    font-family: inherit !important;
    line-height: 1.6 !important;
    resize: vertical !important;
    background: var(--bg-primary) !important;
    transition: border-color 0.2s !important;
}

.question-group textarea:focus {
    outline: none !important;
    border-color: var(--accent) !important;
    box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.1) !important;
}

.char-count {
    text-align: right;
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.score-display {
    text-align: center;
    margin: 3rem 0;
}

.score-circle {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.score-value {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1;
}

.score-label {
    font-size: 0.875rem;
    opacity: 0.9;
    margin-top: 0.5rem;
}

.urgency-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.875rem;
    color: white;
}

.summary-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    text-align: center;
}

.stat-value {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.results-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

#waste-zones {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.zone-card {
    background: var(--bg-card);
    padding: 1.75rem;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    border-left: 4px solid var(--accent);
}

.zone-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.zone-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.zone-score {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
}

.zone-details {
    display: flex;
    gap: 2rem;
    margin-bottom: 1rem;
}

.zone-detail {
    flex: 1;
}

.detail-label {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.detail-value {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.zone-recommendation {
    background: var(--accent-light);
    padding: 1rem;
    border-radius: 6px;
    border-left: 3px solid var(--accent);
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.next-steps-card, .contact-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    text-align: center;
    margin-bottom: 2rem;
}

.next-steps-card h3, .contact-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.next-steps-card p, .contact-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 1.0625rem;
}

.footer {
    border-top: 1px solid var(--border);
    padding: 2rem;
    margin-top: 4rem;
    background: var(--bg-card);
}

.footer-content {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
}

.footer-links a:hover {
    color: var(--text-primary);
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-features {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .summary-stats {
        grid-template-columns: 1fr;
    }
    
    .zone-details {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .question-help {
        padding-left: 0;
    }
}