:root {
    --primary-color: #4F46E5;
    --primary-hover: #4338CA;
    --bg-color: #F3F4F6;
    --card-bg: #FFFFFF;
    --text-main: #1F2937;
    --text-muted: #6B7280;
    --border-color: #E5E7EB;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    display: flex;
    justify-content: center;
    padding: 2rem;
    min-height: 100vh;
}

.container {
    max-width: 800px;
    width: 100%;
    background-color: transparent;
}

header {
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 0.5rem;
}

header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.search-section {
    display: flex;
    gap: 10px;
    margin-bottom: 2rem;
    justify-content: center;
}

input[type="text"] {
    flex: 1;
    max-width: 500px;
    padding: 1rem 1.5rem;
    font-size: 1.1rem;
    border: 2px solid var(--border-color);
    border-radius: 9999px;
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
    font-family: inherit;
}

input[type="text"]:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
}

button {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: white;
    background-color: var(--primary-color);
    border: none;
    border-radius: 9999px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.1s;
    font-family: inherit;
}

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

button:active {
    transform: translateY(2px);
}

.hidden {
    display: none !important;
}

.error-msg {
    text-align: center;
    background-color: #FEE2E2;
    color: #B91C1C;
    padding: 1.5rem;
    border-radius: 1rem;
    margin-bottom: 2rem;
    border: 1px solid #FCA5A5;
}

.available-countries {
    font-size: 0.9rem;
    margin-top: 0.5rem;
    opacity: 0.8;
}

.result-section {
    animation: fadeIn 0.5s ease-out;
}

.country-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.cards-container {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
}

.card {
    background-color: var(--card-bg);
    border-radius: 1rem;
    box-shadow: var(--shadow);
    overflow: hidden;
    flex: 1;
    min-width: 300px;
    max-width: 400px;
    display: flex;
    flex-direction: column;
}

.card-header {
    background-color: #F9FAFB;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.card-header h3 {
    font-size: 1.25rem;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.highlight {
    color: var(--primary-color);
    font-weight: 800;
}

.card-body {
    padding: 1.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1;
    background-color: #ffffff;
}

.card-body img {
    max-width: 100%;
    max-height: 250px;
    object-fit: contain;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

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

@media (max-width: 600px) {
    .search-section {
        flex-direction: column;
    }
    input[type="text"], button {
        width: 100%;
        max-width: none;
    }
}