/* ===== CSS Variables ===== */
:root {
    --bg-primary: #0f0f1e;
    --bg-secondary: #1a1a2e;
    --bg-card: #16213e;
    --text-primary: #ffffff;
    --text-secondary: #b8b8b8;
    --text-muted: #6c6c6c;
    
    /* Age category colors */
    --color-green: #10b981;
    --color-green-bg: rgba(16, 185, 129, 0.15);
    --color-blue: #3b82f6;
    --color-blue-bg: rgba(59, 130, 246, 0.15);
    --color-orange: #f59e0b;
    --color-orange-bg: rgba(245, 158, 11, 0.15);
    --color-red: #ef4444;
    --color-red-bg: rgba(239, 68, 68, 0.15);
    
    /* Risk levels */
    --risk-high: #ef4444;
    --risk-medium: #f59e0b;
    --risk-low: #10b981;
    
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

/* ===== Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

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

/* ===== Header ===== */
.header {
    text-align: center;
    padding: 30px 0 40px;
}

.logo {
    font-size: 4rem;
    margin-bottom: 15px;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--color-blue), var(--color-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* ===== Age Selection ===== */
.age-selection {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 30px;
    margin-bottom: 30px;
}

.age-selection h2 {
    text-align: center;
    font-size: 1.2rem;
    font-weight: 500;
    margin-bottom: 25px;
    color: var(--text-secondary);
}

.age-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

.age-btn {
    background: var(--bg-card);
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    padding: 20px 10px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.age-btn:hover {
    transform: translateY(-5px);
}

.age-btn[data-color="green"]:hover,
.age-btn[data-color="green"].active {
    border-color: var(--color-green);
    background: var(--color-green-bg);
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
}

.age-btn[data-color="blue"]:hover,
.age-btn[data-color="blue"].active {
    border-color: var(--color-blue);
    background: var(--color-blue-bg);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

.age-btn[data-color="orange"]:hover,
.age-btn[data-color="orange"].active {
    border-color: var(--color-orange);
    background: var(--color-orange-bg);
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.3);
}

.age-btn[data-color="red"]:hover,
.age-btn[data-color="red"].active {
    border-color: var(--color-red);
    background: var(--color-red-bg);
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.3);
}

.age-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.age-icon {
    font-size: 2rem;
}

.age-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ===== Results Section ===== */
.results {
    display: none;
    animation: fadeIn 0.5s ease;
}

.results.visible {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== Result Cards ===== */
.result-card {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 25px;
    margin-bottom: 20px;
    border-left: 4px solid var(--color-blue);
}

.result-card h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Description Card */
.description-card {
    border-left-color: var(--color-blue);
}

.description-text {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.7;
}

/* Risks Card */
.risks-card {
    border-left-color: var(--risk-high);
}

.risks-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.risk-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 15px;
    background: var(--bg-card);
    border-radius: 8px;
    transition: var(--transition);
}

.risk-item:hover {
    transform: translateX(5px);
}

.risk-level {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 5px;
}

.risk-level.high { background: var(--risk-high); box-shadow: 0 0 10px var(--risk-high); }
.risk-level.medium { background: var(--risk-medium); box-shadow: 0 0 10px var(--risk-medium); }
.risk-level.low { background: var(--risk-low); box-shadow: 0 0 10px var(--risk-low); }

.risk-content {
    flex: 1;
}

.risk-title {
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--text-primary);
}

.risk-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.risk-badge {
    font-size: 0.75rem;
    padding: 3px 8px;
    border-radius: 4px;
    font-weight: 500;
}

.risk-badge.high { background: rgba(239, 68, 68, 0.2); color: var(--risk-high); }
.risk-badge.medium { background: rgba(245, 158, 11, 0.2); color: var(--risk-medium); }
.risk-badge.low { background: rgba(16, 185, 129, 0.2); color: var(--risk-low); }

/* Actions Card */
.actions-card {
    border-left-color: var(--color-green);
}

.actions-list {
    list-style: none;
}

.actions-list li {
    padding: 12px 0;
    padding-left: 30px;
    position: relative;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.actions-list li:last-child {
    border-bottom: none;
}

.actions-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-green);
    font-weight: bold;
}

/* Explain Card */
.explain-card {
    border-left-color: var(--color-blue);
}

.explain-quote {
    background: var(--bg-card);
    padding: 20px;
    border-radius: 8px;
    font-style: italic;
    color: var(--text-secondary);
    position: relative;
}

.explain-quote::before {
    content: '"';
    font-size: 3rem;
    color: var(--color-blue);
    position: absolute;
    top: -10px;
    left: 10px;
    opacity: 0.5;
}

/* Rules Card */
.rules-card {
    border-left-color: var(--color-orange);
}

.rules-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.rule-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: var(--bg-card);
    border-radius: 8px;
}

.rule-number {
    width: 30px;
    height: 30px;
    background: var(--color-orange);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.rule-text {
    color: var(--text-secondary);
}

/* Download Section */
.download-section {
    text-align: center;
    padding: 30px 0;
}

.download-btn {
    background: linear-gradient(135deg, var(--color-blue), var(--color-green));
    border: none;
    color: white;
    padding: 15px 40px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
}

.download-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
}

.download-hint {
    margin-top: 10px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ===== Footer ===== */
.footer {
    text-align: center;
    padding: 40px 0 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: 20px;
}

.footer-slogan {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 10px;
}

.footer-project {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ===== Responsive ===== */
@media (max-width: 600px) {
    .container {
        padding: 15px;
    }
    
    .header h1 {
        font-size: 1.5rem;
    }
    
    .logo {
        font-size: 3rem;
    }
    
    .age-buttons {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .age-btn {
        padding: 15px 10px;
    }
    
    .age-number {
        font-size: 1.3rem;
    }
    
    .age-icon {
        font-size: 1.5rem;
    }
    
    .result-card {
        padding: 20px 15px;
    }
    
    .risk-item {
        flex-direction: column;
        gap: 10px;
    }
    
    .risk-level {
        margin-top: 0;
    }
}

/* ===== Print Styles ===== */
@media print {
    body {
        background: white;
        color: black;
    }
    
    .age-selection,
    .download-section,
    .footer {
        display: none;
    }
    
    .result-card {
        break-inside: avoid;
        border: 1px solid #ccc;
    }
}