/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-bg: #FFFFFF;
    --color-text: #1A1A1A;
    --color-accent: #1E2A3A;
    --color-border: #E0E0E0;
    --font-serif: 'EB Garamond', serif;
    --font-sans: 'Inter', sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.75;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 40px;
}

/* Navigation */
.navbar {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 25px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    height: 50px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 35px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--color-text);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.5px;
    transition: color 0.2s ease;
}

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

.lang-switcher {
    display: flex;
    align-items: center;
    gap: 8px;
}

.lang-btn {
    background: none;
    border: none;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text);
    cursor: pointer;
    opacity: 0.5;
    transition: opacity 0.2s ease;
}

.lang-btn.active {
    opacity: 1;
    color: var(--color-accent);
}

.lang-btn:hover {
    opacity: 1;
}

.lang-separator {
    color: var(--color-border);
}

/* Hero Section */
.hero {
    padding: 100px 0 80px;
    border-bottom: 1px solid var(--color-border);
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 48px;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 40px;
    line-height: 1.2;
}

.hero-text {
    font-size: 20px;
    line-height: 1.8;
    max-width: 900px;
    font-weight: 300;
}

/* Section Styles */
.section {
    padding: 80px 0;
    border-bottom: 1px solid var(--color-border);
}

.section-title {
    font-family: var(--font-serif);
    font-size: 36px;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 50px;
}

/* Foundation Section */
.foundation-content p {
    margin-bottom: 30px;
    font-size: 17px;
}

.mission-section {
    margin-top: 60px;
    padding-top: 60px;
    border-top: 1px solid var(--color-border);
}

.mission-title {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 35px;
}

.mission-section p {
    margin-bottom: 30px;
    font-size: 17px;
}

.mission-quote {
    font-family: var(--font-serif);
    font-size: 22px;
    font-style: italic;
    color: var(--color-accent);
    margin-top: 40px;
    text-align: center;
}

/* Book Section */
.book-section {
    background: #FAFAF8;
}

.book-content {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 60px;
    align-items: start;
}

.book-cover img {
    width: 100%;
    height: auto;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

.book-title {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 15px;
    line-height: 1.3;
}

.book-subtitle {
    font-size: 16px;
    font-style: italic;
    color: #666;
    margin-bottom: 35px;
}

.book-text p {
    margin-bottom: 25px;
    font-size: 16px;
}

.book-conclusion {
    margin-top: 35px;
    font-size: 17px;
}

.book-publisher {
    margin-top: 40px;
    font-size: 14px;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Bio Section */
.bio-content p {
    margin-bottom: 30px;
    font-size: 17px;
}

/* Contact Section */
.contact-intro {
    font-size: 17px;
    margin-bottom: 30px;
}

.contact-info {
    margin-bottom: 50px;
}

.contact-info p {
    font-size: 16px;
    margin-bottom: 8px;
}

.contact-info strong {
    font-size: 18px;
    color: var(--color-accent);
}

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

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--color-accent);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--color-border);
    font-family: var(--font-sans);
    font-size: 15px;
    transition: border-color 0.2s ease;
}

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

.form-group textarea {
    resize: vertical;
}

.submit-btn {
    background: transparent;
    border: 2px solid var(--color-accent);
    color: var(--color-accent);
    padding: 12px 40px;
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    background: var(--color-accent);
    color: white;
}

/* Footer */
.footer {
    padding: 40px 0;
    text-align: center;
    background: #FAFAF8;
}

.footer p {
    font-size: 13px;
    color: #666;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .book-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .book-cover {
        max-width: 400px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 25px;
    }

    .nav-content {
        flex-direction: column;
        gap: 20px;
    }

    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-text {
        font-size: 18px;
    }

    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 30px;
    }

    .book-cover {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }

    .hero-text {
        font-size: 16px;
    }

    .section-title {
        font-size: 24px;
    }

    .foundation-content p,
    .bio-content p,
    .mission-section p {
        font-size: 15px;
    }
}