:root {
    --primary-color: #0056b3;
    --primary-hover: #004494;
    --bg-color: #f8f9fa;
    --text-color: #333;
    --text-light: #666;
    --white: #ffffff;
    --border-color: #dee2e6;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 480px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background-color: var(--white);
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--primary-color);
    cursor: pointer;
}

.header-links {
    font-size: 0.8rem;
    color: var(--text-light);
}

/* Screen Management */
.screen {
    display: none;
    padding: 40px 0 100px;
    animation: fadeIn 0.3s ease;
}

.screen.active {
    display: block;
}

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

/* Hero Section */
.hero {
    text-align: center;
    padding: 20px 0;
}

.headline {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 15px;
    word-break: keep-all;
}

.subcopy {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 30px;
    word-break: keep-all;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s;
    border: none;
    font-size: 1rem;
}

.btn-lg {
    padding: 18px 30px;
    font-size: 1.1rem;
}

.btn-full {
    display: block;
    width: 100%;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.9rem;
}

.cta-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.secondary-ctas {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

/* Quick Selection & Tags */
.quick-selection {
    margin-top: 40px;
}

.quick-selection h3 {
    font-size: 1rem;
    margin-bottom: 15px;
}

.tag-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    background-color: #e9ecef;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-light);
}

/* Info Box */
.info-box {
    margin-top: 30px;
    background-color: #e7f1ff;
    padding: 20px;
    border-radius: 12px;
}

.info-box ul {
    list-style: none;
}

.info-box li {
    font-size: 0.9rem;
    color: #004085;
    margin-bottom: 8px;
}

/* Form & Selection */
h2 {
    font-size: 1.4rem;
    margin-bottom: 10px;
}

.description {
    color: var(--text-light);
    margin-bottom: 30px;
    font-size: 0.95rem;
}

.form-group {
    margin-bottom: 30px;
}

.form-group h3 {
    font-size: 1rem;
    margin-bottom: 12px;
}

.selection-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.select-item {
    background-color: var(--white);
    border: 1px solid var(--border-color);
    padding: 12px;
    border-radius: 8px;
    text-align: center;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.select-item.selected {
    background-color: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.btn-back {
    background: none;
    border: none;
    color: var(--text-light);
    margin-bottom: 20px;
    cursor: pointer;
    font-size: 0.9rem;
}

/* Notice & Cards */
.notice-card {
    background-color: #fff3cd;
    color: #856404;
    padding: 15px;
    border-radius: 8px;
    font-size: 0.85rem;
    margin: 20px 0;
}

.question-card {
    background-color: var(--white);
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 15px;
    border: 1px solid var(--border-color);
}

.question-card p {
    margin-bottom: 15px;
    font-weight: 600;
}

.yn-btns {
    display: flex;
    gap: 10px;
}

.recommendation-box {
    background-color: #d1ecf1;
    color: #0c5460;
    padding: 20px;
    border-radius: 12px;
    margin: 30px 0;
}

.recommendation-box h4 {
    margin-bottom: 10px;
}

/* Input Fields */
.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.9rem;
}

.input-group input, .input-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
}

.notice-small {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-bottom: 20px;
}

/* Footer Nav */
.footer-nav {
    background-color: var(--white);
    padding: 20px 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    font-size: 0.75rem;
    color: var(--text-light);
}

.footer-btns {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--white);
    padding: 15px 20px;
    border-top: 1px solid var(--border-color);
    max-width: 480px;
    margin: 0 auto;
}

/* Language Switcher */
.header-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 5px;
}

.lang-switcher {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--text-light);
}

.lang-btn {
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    font-weight: 400;
    padding: 0;
    transition: color 0.2s;
}

.lang-btn.active {
    color: var(--primary-color);
    font-weight: 700;
}

.lang-btn:hover {
    color: var(--primary-color);
}