:root {
    --primary-color: #2c5e4c;
    --secondary-color: #f2f2f2;
    --background-color: #f9f9f9;
    --text-color: #333;
    --card-bg: #ffffff;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    --font-heading: 'Lora', serif;
    --font-body: 'Gowun Dodum', sans-serif;
    --input-bg: #ffffff;
    --input-border: #ccc;
    --footer-text: #666;
}

body.dark-mode {
    --primary-color: #4ea88a;
    --secondary-color: #2a2a2a;
    --background-color: #121212;
    --text-color: #e0e0e0;
    --card-bg: #1e1e1e;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
    --input-bg: #2d2d2d;
    --input-border: #444;
    --footer-text: #aaa;
}

body {
    font-family: var(--font-body);
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    margin: 0;
    transition: background-color 0.3s, color 0.3s;
}

header {
    background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('https://images.unsplash.com/photo-1525498128493-380d1990a112?q=80&w=2070&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D') no-repeat center center/cover;
    color: white;
    text-align: center;
    padding: 4rem 1rem;
    position: relative;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.header-controls {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    gap: 10px;
    z-index: 10;
}

.theme-toggle, .nav-link-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    backdrop-filter: blur(5px);
    transition: background 0.3s;
    font-family: var(--font-body);
    text-decoration: none;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover, .nav-link-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

header h1 {
    font-family: var(--font-heading);
    font-size: 3rem;
    margin: 0;
}

header p {
    font-size: 1.2rem;
    margin-top: 0.5rem;
}

main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

h2 {
    font-family: var(--font-heading);
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2.2rem;
}

.plant-gallery {
    margin-bottom: 4rem;
}

.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.plant-card {
    background: var(--card-bg);
    border-radius: 15px;
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s, background-color 0.3s;
    display: flex;
    flex-direction: column;
}

.plant-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.plant-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.plant-card-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.plant-card-content h3 {
    font-family: var(--font-heading);
    margin-top: 0;
    color: var(--primary-color);
}

.plant-card-content p {
    flex-grow: 1;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.plant-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--secondary-color);
}

.tag {
    background-color: var(--secondary-color);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--primary-color);
    font-weight: bold;
    transition: background-color 0.3s, color 0.3s;
}

.recommendation-section {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    margin-bottom: 4rem;
    transition: background-color 0.3s;
}

#recommendation-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    align-items: end;
    margin-bottom: 2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: bold;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.form-group select, #recommendation-form button {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--input-border);
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 1rem;
    background-color: var(--input-bg);
    color: var(--text-color);
    transition: background-color 0.3s, border-color 0.3s, color 0.3s;
}

#recommendation-form button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s;
}

#recommendation-form button:hover {
    background-color: #1e4235;
}

body.dark-mode #recommendation-form button:hover {
    background-color: #63d1ae;
}

#recommendation-result h3 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 1.5rem;
}

#recommendation-result .card-container {
    margin-top: 1rem;
}

footer {
    text-align: center;
    padding: 1.5rem;
    background-color: var(--secondary-color);
    color: var(--footer-text);
    margin-top: 2rem;
    transition: background-color 0.3s, color 0.3s;
}

/* 제휴 문의 섹션 스타일 */
.contact-section, .comments-section {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    margin-bottom: 4rem;
    transition: background-color 0.3s;
}

.contact-description {
    text-align: center;
    color: var(--footer-text);
    margin-bottom: 2rem;
}

#contact-form {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 600px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

#contact-form input, #contact-form textarea, #contact-form select {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--input-border);
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 1rem;
    background-color: var(--input-bg);
    color: var(--text-color);
    transition: background-color 0.3s, border-color 0.3s, color 0.3s;
}

#contact-form textarea {
    resize: vertical;
}

#contact-form button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
    margin-top: 1rem;
}

#contact-form button:hover {
    background-color: #1e4235;
    transform: translateY(-2px);
}

body.dark-mode #contact-form button:hover {
    background-color: #63d1ae;
}

#contact-form input:focus, #contact-form textarea:focus, #contact-form select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(44, 94, 76, 0.2);
}

body.dark-mode #contact-form input:focus, 
body.dark-mode #contact-form textarea:focus, 
body.dark-mode #contact-form select:focus {
    box-shadow: 0 0 0 2px rgba(78, 168, 138, 0.2);
}


.section-note {
    text-align: center;
    max-width: 900px;
    margin: -1.2rem auto 2rem;
    color: var(--footer-text);
}

.eng-name {
    margin-top: -0.2rem;
    color: var(--footer-text);
}

.plant-detail-grid {
    margin-top: 1rem;
    display: grid;
    gap: 0.7rem;
}

.plant-detail-group {
    border: 1px solid var(--secondary-color);
    border-radius: 10px;
    background: var(--secondary-color);
    padding: 0.6rem 0.8rem;
}

.plant-detail-group summary {
    cursor: pointer;
    font-weight: bold;
    color: var(--primary-color);
}

.plant-detail-group ul {
    list-style: none;
    padding: 0;
    margin: 0.8rem 0 0;
    display: grid;
    gap: 0.5rem;
}

.plant-detail-group li {
    display: grid;
    grid-template-columns: 115px 1fr;
    gap: 0.6rem;
    font-size: 0.92rem;
}

.plant-detail-group li strong {
    color: var(--primary-color);
}

@media (max-width: 600px) {
    .plant-detail-group li {
        grid-template-columns: 1fr;
        gap: 0.15rem;
    }
}

/* Google AdSense */
.ad-container {
    width: 100%;
    max-width: 1200px;
    margin: 1.5rem auto;
    padding: 0 1rem;
    text-align: center;
    overflow: hidden;
}