:root {
    --primary: #37c3f1;
    --primary-hover: #29abe2;
    --gray-bg: #f8f9fa;
    --text-dark: #333;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', system-ui, sans-serif;
}

body {
    background-color: #f0f2f5;
    color: var(--text-dark);
    line-height: 1.6;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 30px;
}

.subtitle { color: #666; font-size: 0.9rem; }

.main-container {
    display: flex;
    max-width: 1000px;
    margin: 0 auto;
    gap: 20px;
}

.card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: var(--shadow);
    flex: 1;
}

h2 { margin-bottom: 15px; font-weight: 700; color: var(--primary); }

.form-control { margin-bottom: 15px; }

.form-control label { display: block; font-weight: 600; margin-top: 10px; margin-bottom: 5px; }

input[type="number"] {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    transition: 0.3s;
}

input[type="number"]:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(55, 195, 241, 0.2);
}

.radio-group { display: flex; gap: 15px; margin: 10px 0; }

.button-group { display: flex; gap: 10px; margin-top: 20px; }

button {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: 0.3s;
}

#submit-button { background: var(--primary); color: white; }
#submit-button:hover { background: var(--primary-hover); }

#reset-button { background: #eee; color: #666; }
#reset-button:hover { background: #ddd; }

/* Result Section */

.result-display #btn-download {
    margin-top: 15px;
    background-color: var(--primary);
    color: white;
}

.result-display {
    background: var(--gray-bg);
    padding: 20px;
    border-radius: 12px;
    text-align: center;
    margin-bottom: 20px;
}

#result { font-size: 3rem; color: var(--primary); }

.action-links { display: flex; flex-direction: column; gap: 10px; margin: 20px 0; }

.btn-secondary { background: var(--primary); color: white; text-decoration: none; text-align: center; padding: 10px; border-radius: 8px; }
.btn-outline { border: 1px solid var(--primary); color: var(--primary); text-decoration: none; text-align: center; padding: 10px; border-radius: 8px; }

.info-box ul {
    padding-left: 20px;
    margin-top: 10px;
}

.info-box, .risk-info {
    margin-top: 20px;
    font-size: 0.85rem;
    color: #777;
    border-top: 1px dashed #ddd;
    padding-top: 15px;
}

@media (max-width: 768px) {
    .main-container { flex-direction: column; }
}