/* 기본 스타일 리셋 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1a1a1a;
    --secondary-color: #333;
    --accent-color: #d4af37;
    --text-color: #333;
    --light-text: #fff;
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'NanumGothic', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
}

/* 공통 스타일 */
.section-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 6rem 0;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    color: var(--primary-color);
}

/* 헤더 스타일 */
header {
    background: #000;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.8rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo, .footer-logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    text-decoration: none;
}

.logo {
    font-size: 1.3rem;
    font-weight: bold;
    color: var(--light-text);
}

.logo-circle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background-color: #00A896;
    border-radius: 50%;
    color: white;
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: lowercase;
}

.footer-logo {
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
    font-weight: bold;
    color: var(--light-text);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav ul li a {
    text-decoration: none;
    color: var(--light-text);
    font-size: 0.95rem;
    font-weight: 400;
    transition: var(--transition);
    position: relative;
}

nav ul li a:hover {
    color: var(--accent-color);
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: var(--transition);
}

nav ul li a:hover::after {
    width: 100%;
}

/* 히어로 섹션 */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.85), rgba(0, 0, 0, 0.85)), url('images/library-bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    height: 100vh;
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--light-text);
    padding-top: 80px;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 2rem;
}

.hero-subtitle {
    font-size: 1.8rem;
    font-weight: 400;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.hero h1 {
    font-size: 2.8rem;
    font-weight: 700;
    line-height: 1.4;
    margin: 2rem 0;
    word-break: keep-all;
}

.hero-price {
    font-size: 1.4rem;
    margin: 2rem 0;
    color: var(--accent-color);
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 3rem;
}

.cta-button, .secondary-button {
    display: inline-block;
    padding: 1.2rem 2.5rem;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
}

.cta-button {
    background: var(--accent-color);
    color: var(--primary-color);
}

.secondary-button {
    background: transparent;
    color: var(--light-text);
    border: 1px solid var(--light-text);
}

.cta-button:hover, .secondary-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

/* 소개 섹션 */
.about {
    background: linear-gradient(to right, #000000, #1a1a1a);
    color: var(--light-text);
    padding: 8rem 0;
}

.about-header {
    text-align: center;
    margin-bottom: 5rem;
}

.about-header h2 {
    color: var(--accent-color);
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.about-subtitle {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
}

.comparison-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.comparison-box {
    padding: 3rem;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease;
}

.comparison-box:hover {
    transform: translateY(-10px);
}

.comparison-box.negative {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 0, 0, 0.1);
}

.comparison-box.positive {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--accent-color);
}

.comparison-box h3 {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    color: var(--light-text);
}

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

.comparison-box.negative ul li {
    margin-bottom: 1.2rem;
    padding-left: 2rem;
    position: relative;
    color: rgba(255, 255, 255, 0.7);
}

.comparison-box.negative ul li::before {
    content: "✗";
    position: absolute;
    left: 0;
    color: #ff4444;
}

.comparison-box.positive ul li {
    margin-bottom: 1.2rem;
    padding-left: 2rem;
    position: relative;
    color: rgba(255, 255, 255, 0.9);
}

.comparison-box.positive ul li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

.testimonial {
    text-align: center;
    padding: 3rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    max-width: 600px;
    margin: 0 auto;
}

.testimonial p {
    font-size: 1.5rem;
    color: var(--accent-color);
    line-height: 1.6;
}

.features {
    list-style: none;
    margin-top: 2rem;
}

.features li {
    margin-bottom: 1rem;
    font-size: 1.1rem;
    color: var(--secondary-color);
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat-item {
    background: var(--primary-color);
    padding: 2rem;
    border-radius: var(--border-radius);
    color: var(--light-text);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
    color: var(--accent-color);
}

.stat-label {
    font-size: 1.1rem;
}

/* 출판 과정 */
.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.step {
    text-align: center;
    padding: 2rem;
    background: #fff;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: var(--transition);
}

.step:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.step-number {
    width: 50px;
    height: 50px;
    line-height: 50px;
    background: var(--primary-color);
    color: var(--accent-color);
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    font-weight: bold;
}

.step h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

/* 가격 섹션 */
.pricing {
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    color: var(--light-text);
}

.pricing h2 {
    color: var(--light-text);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.pricing-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: 3rem 2rem;
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.pricing-card.featured {
    background: rgba(255, 255, 255, 0.15);
    transform: scale(1.05);
}

.pricing-card:hover {
    transform: translateY(-5px);
}

.pricing-header h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.price {
    margin-bottom: 2rem;
}

.price .amount {
    font-size: 3rem;
    font-weight: bold;
    color: var(--accent-color);
}

.price .unit {
    font-size: 1.2rem;
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.8);
}

.pricing-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--accent-color);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    transition: var(--transition);
}

.pricing-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

/* 연락처 섹션 */
.contact {
    background: linear-gradient(rgba(0, 0, 0, 0.90), rgba(0, 0, 0, 0.90)), url('images/library-bg.jpg');
    background-size: cover;
    background-position: top;
    background-attachment: fixed;
    color: var(--light-text);
    padding: 6rem 0;
}

.contact h2 {
    color: var(--light-text);
    text-align: center;
    margin-bottom: 1rem;
}

.contact-desc {
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 3rem;
    font-size: 1.2rem;
}

.google-form-container {
    max-width: 800px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.google-form-container iframe {
    width: 100%;
    height: 800px;
    border-radius: 10px;
    background: #fff;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.contact-details {
    list-style: none;
}

.contact-details li {
    margin-bottom: 1.5rem;
}

.contact-details strong {
    display: block;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.contact-form {
    background: #fff;
    padding: 3rem;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.form-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 1rem;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

.contact-form textarea {
    height: 200px;
    resize: vertical;
}

.contact-form button {
    width: 100%;
    padding: 1rem;
    background: var(--primary-color);
    color: var(--light-text);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
}

.contact-form button:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* 푸터 */
footer {
    background: #000;
    color: var(--light-text);
    padding: 4rem 0;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.3rem;
    font-weight: bold;
    color: var(--light-text);
    text-decoration: none;
    margin-bottom: 1.5rem;
}

.footer-logo img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
}

.footer-desc {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.footer-center h3,
.footer-right h3 {
    color: var(--light-text);
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

.footer-center ul,
.contact-info {
    list-style: none;
}

.footer-center ul li {
    margin-bottom: 0.8rem;
}

.footer-center ul a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.95rem;
    transition: var(--transition);
}

.footer-center ul a:hover {
    color: var(--accent-color);
}

.contact-info li {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    margin-bottom: 0.8rem;
}

.copyright {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.85rem;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    nav {
        flex-direction: column;
        padding: 1rem;
    }

    nav ul {
        margin-top: 1rem;
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero-subtitle {
        font-size: 1.4rem;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero-price {
        font-size: 1.2rem;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
    }

    .cta-button, .secondary-button {
        width: 100%;
        text-align: center;
    }

    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .stats {
        grid-template-columns: 1fr;
    }

    .pricing-card.featured {
        transform: none;
    }

    .form-group {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .footer-logo {
        justify-content: center;
    }

    .contact {
        padding: 4rem 0;
    }

    .google-form-container {
        padding: 1rem;
        margin: 0 1rem;
    }

    .google-form-container iframe {
        height: 600px;
    }

    .about-header h2 {
        font-size: 2.2rem;
    }

    .about-subtitle {
        font-size: 1.2rem;
    }

    .comparison-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .comparison-box {
        padding: 2rem;
    }

    .testimonial {
        padding: 2rem;
        margin: 0 1rem;
    }

    .testimonial p {
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    section {
        padding: 4rem 0;
    }

    .hero {
        padding: 0 1rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .contact-form {
        padding: 1.5rem;
    }
}

/* 패키지 섹션 */
.packages {
    position: relative;
    background: linear-gradient(rgba(0, 0, 0, 0.95), rgba(0, 0, 0, 0.95));
    color: var(--light-text);
    padding: 8rem 0;
}

.packages h2 {
    color: var(--light-text);
    text-align: center;
    margin-bottom: 4rem;
    font-size: 2.8rem;
}

.packages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
    justify-items: center;
}

.package-card {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 20px;
    padding: 3.5rem 2.5rem;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    width: 100%;
    max-width: 350px;
}

.package-card:hover {
    transform: translateY(-10px);
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.05);
}

.package-card h3 {
    font-size: 2rem;
    margin-bottom: 1.2rem;
    color: var(--light-text);
}

.package-desc {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 2.5rem;
    font-size: 1.1rem;
    line-height: 1.6;
}

.package-price {
    margin-bottom: 2.5rem;
    position: relative;
    display: inline-block;
}

.package-price .price {
    font-size: 2.8rem;
    font-weight: bold;
    color: var(--accent-color);
    display: block;
    margin-bottom: 0.5rem;
}

.package-features {
    list-style: none;
    margin-bottom: 2.5rem;
    text-align: left;
}

.package-features li {
    margin-bottom: 1.2rem;
    color: rgba(255, 255, 255, 0.85);
    font-size: 1rem;
    line-height: 1.5;
    padding-left: 1.8rem;
    position: relative;
}

.package-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

.package-note {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 2.5rem;
    font-style: italic;
}

.package-button {
    display: inline-block;
    padding: 1rem 2rem;
    color: var(--light-text);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    transition: all 0.3s ease;
}

.package-button:hover {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: var(--primary-color);
}

.package-card.featured {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--accent-color);
    transform: none;
    width: 100%;
    max-width: 350px;
}

.package-card.featured::before {
    content: "추천";
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: var(--accent-color);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: bold;
}

@media (max-width: 1024px) {
    .packages-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
        padding: 0 2rem;
    }

    .package-card.featured {
        grid-column: auto;
        transform: none;
    }
}

@media (max-width: 768px) {
    .packages {
        padding: 6rem 0;
    }

    .packages h2 {
        font-size: 2.2rem;
    }

    .packages-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .package-card, 
    .package-card.featured {
        padding: 2.5rem 2rem;
        max-width: 350px;
        width: 100%;
    }
}

/* 프로세스 섹션 */
.process {
    background: linear-gradient(rgba(0, 0, 0, 0.92), rgba(0, 0, 0, 0.92)), url('images/library-bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--light-text);
    padding: 6rem 0;
}

.process h2 {
    color: var(--light-text);
    text-align: center;
    margin-bottom: 4rem;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.step {
    text-align: left;
    padding: 2rem;
    background: transparent;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.step-number {
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    background: var(--accent-color);
    color: var(--primary-color);
    border-radius: 50%;
    margin-bottom: 1.5rem;
    font-weight: bold;
    font-size: 1.2rem;
}

.step h3 {
    color: var(--light-text);
    margin-bottom: 1rem;
    font-size: 1.4rem;
}

.step p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* CTA 섹션 */
.cta {
    background: linear-gradient(rgba(0, 0, 0, 0.88), rgba(0, 0, 0, 0.88)), url('images/library-bg.jpg');
    background-size: cover;
    background-position: bottom;
    background-attachment: fixed;
    color: var(--light-text);
    text-align: center;
    padding: 6rem 0;
}

.cta h2 {
    color: var(--light-text);
    margin-bottom: 1rem;
}

.cta p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 2rem;
    font-size: 1.2rem;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .packages-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .process-steps {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }

    .process, .cta, .contact {
        background-attachment: scroll;
    }
}

@media (max-width: 480px) {
    .process-steps {
        grid-template-columns: 1fr;
    }

    .package-card {
        padding: 2rem 1.5rem;
    }
}