:root {
    --bg: #f4f6f9;
    --card-bg: #ffffff;
    --primary: #2c5ea8;
    --primary-hover: #1e4580;
    --accent: #e8f0fa;
    --text: #2d3436;
    --text-secondary: #5a6270;
    --border: #dce3ea;
    --success: #1a8a4a;
    --warning: #e07b39;
    --radius: 10px;
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    --transition: 0.2s ease;
    --font: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
}

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    line-height: 1.5;
}

.container {
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: var(--shadow), 0 8px 32px rgba(0, 0, 0, 0.05);
    padding: 32px 28px;
    max-width: 620px;
    width: 100%;
}

.header {
    text-align: center;
    margin-bottom: 28px;
}
.header h1 {
    font-size: 1.55rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.3px;
}
.subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 6px;
    color: var(--text);
}
.required {
    color: #d63031;
    margin-left: 2px;
}
.form-group select,
.form-group input[type="number"] {
    width: 100%;
    padding: 11px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-family: var(--font);
    background: #fafbfc;
    color: var(--text);
    transition: all var(--transition);
    outline: none;
}
.form-group select {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235a6270' stroke-width='1.8' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
    cursor: pointer;
}
.form-group input[type="number"] {
    cursor: text;
}
.form-group select:focus,
.form-group input[type="number"]:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(44, 94, 168, 0.08);
    background: #fff;
}

.uniqueness-hint {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.additional-fields {
    background: var(--accent);
    border-radius: var(--radius);
    padding: 16px 18px;
    margin-bottom: 20px;
    display: none;
    animation: fadeSlideIn 0.25s ease;
}
.additional-fields.active {
    display: block;
}
.inner-label {
    font-weight: 600;
    font-size: 0.85rem;
    margin-bottom: 6px;
    color: var(--text);
}
.row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}
.col {
    flex: 1;
    min-width: 100px;
}
.col label {
    font-size: 0.8rem;
    font-weight: 500;
}
.additional-fields input[type="number"] {
    width: 100%;
    padding: 9px 12px;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-size: 0.9rem;
    font-family: var(--font);
    background: #fff;
    outline: none;
    transition: all var(--transition);
}
.additional-fields input[type="number"]:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(44, 94, 168, 0.07);
}
.radio-group {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 4px;
}
.radio-group label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    color: var(--text);
    background: #fff;
    padding: 8px 14px;
    border-radius: 8px;
    border: 1.5px solid var(--border);
    transition: all var(--transition);
}
.radio-group label:hover {
    border-color: var(--primary);
    background: #f8fafe;
}
.radio-group input[type="radio"] {
    accent-color: var(--primary);
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.result {
    margin-top: 22px;
    padding: 18px 20px;
    border-radius: var(--radius);
    display: none;
    animation: fadeSlideIn 0.3s ease;
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
}
.result.active {
    display: block;
}
.result.price-result {
    background: #eaf7ee;
    border: 1.5px solid #c3e6cf;
    color: #14522f;
}
.result.inquiry-result {
    background: #fef9ee;
    border: 1.5px solid #f5e0b7;
    color: #7a5d20;
}
.price-amount {
    font-size: 2rem;
    font-weight: 800;
    display: block;
    margin: 4px 0;
    letter-spacing: -0.5px;
}
.price-details {
    font-weight: 400;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

.note {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-top: 16px;
    text-align: center;
    line-height: 1.4;
}

@keyframes fadeSlideIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 500px) {
    .container {
        padding: 20px 16px;
        border-radius: 12px;
    }
    .header h1 {
        font-size: 1.3rem;
    }
    .row {
        flex-direction: column;
        gap: 8px;
    }
    .radio-group {
        flex-direction: column;
        gap: 8px;
    }
    .price-amount {
        font-size: 1.6rem;
    }
}