:root {
    --primary-color: #2e8b57;
    --secondary-color: #3cb371;
    --bg-color: #f8faf9;
    --text-color: #2d3436;
    --card-bg: #ffffff;
    --nav-bg: rgba(255, 255, 255, 0.9);
}

body.dark-mode {
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --card-bg: #1e1e1e;
    --nav-bg: rgba(30, 30, 30, 0.9);
}

* {
    box-sizing: border-box;
    transition: background-color 0.3s, color 0.3s;
}

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: var(--nav-bg);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1000px;
    margin: 0 auto;
    padding: 15px 20px;
}

.nav-logo {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-menu {
    list-style: none;
    display: flex;
    gap: 20px;
    margin: 0;
    padding: 0;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-size: 0.9rem;
    font-weight: 500;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

/* Hero Section */
.hero-section {
    padding: 120px 20px 60px;
    text-align: center;
    background: linear-gradient(135deg, #2e8b57 0%, #3cb371 100%);
    color: white;
}

.hero-section h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

/* Content Cards */
.content-card {
    background-color: var(--card-bg);
    margin: 30px 0;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.content-card h2 {
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 10px;
    margin-bottom: 20px;
}

/* Buttons */
.action-btn, .theme-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
}

.action-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

/* Forms */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-form input, .contact-form textarea {
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 10px;
    background-color: var(--bg-color);
    color: var(--text-color);
}

/* Images */
.pepe-viewer {
    margin-top: 20px;
    text-align: center;
}

/* Footer */
footer {
    padding: 60px 0;
    text-align: center;
    background-color: var(--card-bg);
    margin-top: 60px;
    border-top: 1px solid rgba(0,0,0,0.05);
}

.privacy-notice {
    font-size: 0.85rem;
    opacity: 0.8;
}

@media (max-width: 768px) {
    .nav-menu { display: none; }
    .hero-section h1 { font-size: 1.8rem; }
}