:root {
    --bg-color: #8d6e63;
    --container-bg: #fff;
    --card-bg: #ffffff;
    --text-color: #4a3728;
    --secondary-text: #8c7b70;
    --accent-color: #a67c52; /* Warm Brown */
}

body.dark-mode {
    --bg-color: #2c241e;
    --container-bg: #3d322a;
    --card-bg: #4a3d33;
    --text-color: #f5ebe0;
    --secondary-text: #d1bfa7;
    --accent-color: #d4a373;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #8d6e63;
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
    display: flex;
    justify-content: center;
    padding-top: 50px;
}

.container {
    max-width: 1000px;
    width: 90%;
    text-align: center;
    background-color: var(--container-bg);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s;
}

.theme-toggle {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 20px;
}

#theme-btn {
    background: none;
    border: 2px solid var(--accent-color);
    color: var(--text-color);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
}

#theme-btn:hover {
    background-color: var(--accent-color);
    color: #000;
}

h1 {
    font-size: 3rem;
    margin-bottom: 10px;
    color: var(--accent-color);
}

.subtitle {
    font-size: 1.2rem;
    color: var(--secondary-text);
    margin-bottom: 40px;
}

.character-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
}

.character-card {
    background-color: var(--card-bg);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.character-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.character-img {
    width: 100%;
    height: 300px;
    object-fit: contain;
    background-color: #f9f9f9; /* Contrast for images */
}

body.dark-mode .character-img {
    background-color: #333;
}

.character-info {
    padding: 20px;
}

.character-info h2 {
    margin: 0 0 10px 0;
    font-size: 1.5rem;
}

.role {
    font-weight: bold;
    color: var(--accent-color);
    margin-bottom: 15px;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.description {
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--secondary-text);
}

@media (max-width: 600px) {
    .container {
        padding: 20px;
    }
    h1 {
        font-size: 2rem;
    }
}

/* 제휴 문의 섹션 스타일 */
.contact-section {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--secondary-text);
    text-align: left;
}

.contact-section h2 {
    color: var(--accent-color);
    text-align: center;
    margin-bottom: 10px;
}

.contact-section p {
    text-align: center;
    color: var(--secondary-text);
    margin-bottom: 30px;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: var(--text-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 8px;
    background-color: var(--card-bg);
    color: var(--text-color);
    font-family: inherit;
    box-sizing: border-box;
}

body.dark-mode .form-group input,
body.dark-mode .form-group textarea {
    border-color: #444;
}

.submit-btn {
    width: 100%;
    padding: 15px;
    background-color: var(--accent-color);
    color: #000;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.submit-btn:hover {
    opacity: 0.9;
}