* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Georgia', 'Times New Roman', serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Navigation Styles */
.main-nav {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
    margin-bottom: 20px;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
    margin: 0;
    padding: 0;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 0.5rem 0;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: #3498db;
    border-bottom: 2px solid #3498db;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 5px;
    gap: 4px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: white;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.book-page-container {
    width: 100%;
    max-width: 900px;
    padding: 0 20px;
    margin: 0 auto;
    flex: 1;
    display: flex;
    align-items: center;
}

.book-page {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3),
                0 0 0 1px rgba(255, 255, 255, 0.1) inset,
                0 0 0 2px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    position: relative;
    border: 1px solid rgba(0, 0, 0, 0.1);
    min-height: 90vh;
}

.book-page::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 8px;
    background: linear-gradient(90deg, #3498db 0%, #2980b9 50%, #3498db 100%);
}

.page-content {
    padding: 60px 50px;
    min-height: 90vh;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    background: linear-gradient(to bottom,
        rgba(255, 255, 255, 0.98) 0%,
        rgba(255, 255, 255, 1) 50%,
        rgba(248, 249, 250, 1) 100%);
}

.page-header {
    text-align: center;
    margin-bottom: 50px;
    padding-bottom: 30px;
    border-bottom: 3px solid #e0e0e0;
    position: relative;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 15px;
    letter-spacing: 2px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.page-number {
    position: absolute;
    top: 0;
    right: 0;
    font-size: 0.9rem;
    color: #7f8c8d;
    font-style: italic;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.content-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.section {
    margin-bottom: 30px;
}

.section-title {
    font-size: 1.8rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid #3498db;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    letter-spacing: 1px;
}

.person-card {
    background: #ffffff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border-left: 5px solid #3498db;
    margin-bottom: 25px;
}

.person-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 20px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    letter-spacing: 0.5px;
}

.person-description {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #34495e;
    text-align: justify;
    margin-bottom: 18px;
    text-indent: 25px;
}

.person-description:last-child {
    margin-bottom: 0;
}

.mission-card {
    background: linear-gradient(135deg, #e8f4f8 0%, #f0f7ff 100%);
    padding: 35px;
    border-radius: 8px;
    border-left: 5px solid #3498db;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.mission-text {
    font-size: 1.1rem;
    line-height: 1.85;
    color: #34495e;
    text-align: justify;
    margin-bottom: 20px;
    text-indent: 25px;
}

.mission-text.highlight {
    text-align: center;
    font-size: 1.2rem;
    font-weight: 600;
    font-style: italic;
    color: #2c3e50;
    text-indent: 0;
    padding: 20px;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 8px;
    margin-top: 15px;
}

.page-footer {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 2px solid #e0e0e0;
}

.navigation-links {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.nav-link {
    display: inline-block;
    padding: 12px 25px;
    background: #3498db;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(52, 152, 219, 0.3);
}

.nav-link:hover {
    background: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.4);
}

.footer-note {
    text-align: center;
    padding: 25px;
    background: #f8f9fa;
    border-radius: 8px;
    color: #34495e;
}

.footer-note p {
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 10px;
}

.signature {
    font-style: italic;
    color: #7f8c8d;
    margin-top: 15px;
    font-size: 1.1rem;
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 60px;
        flex-direction: column;
        background: #2c3e50;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
        gap: 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-menu a {
        display: block;
        padding: 1rem;
        width: 100%;
    }

    .mobile-menu-btn {
        display: flex;
    }
    
    .book-page-container {
        padding: 0 8px;
    }
}

/* Tablet styles */
@media (max-width: 1024px) {
    .page-content {
        padding: 50px 40px;
    }
    
    .page-title {
        font-size: 2.2rem;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
}

/* Mobile styles - Book last page appearance */
@media (max-width: 768px) {
    /* Mobile Navigation - already defined above, just add book-page adjustments */
    .book-page-container {
        padding: 0 8px;
    }
    
    body {
        padding: 8px;
    }
    
    .book-page {
        border-radius: 8px;
        min-height: calc(100vh - 16px);
    }
    
    .page-content {
        padding: 35px 25px;
        min-height: calc(100vh - 16px);
        gap: 30px;
    }
    
    .page-header {
        margin-bottom: 30px;
        padding-bottom: 25px;
    }
    
    .page-title {
        font-size: 1.8rem;
        letter-spacing: 1px;
    }
    
    .page-number {
        position: static;
        display: block;
        margin-top: 10px;
        font-size: 0.85rem;
    }
    
    .content-section {
        gap: 30px;
    }
    
    .section {
        margin-bottom: 25px;
    }
    
    .section-title {
        font-size: 1.5rem;
        margin-bottom: 20px;
        padding-bottom: 12px;
    }
    
    .person-card {
        padding: 22px 18px;
        margin-bottom: 20px;
    }
    
    .person-name {
        font-size: 1.3rem;
        margin-bottom: 15px;
    }
    
    .person-description {
        font-size: 0.98rem;
        line-height: 1.75;
        text-indent: 20px;
        margin-bottom: 15px;
        word-wrap: break-word;
        overflow-wrap: break-word;
    }
    
    .mission-card {
        padding: 25px 20px;
    }
    
    .mission-text {
        font-size: 1rem;
        line-height: 1.75;
        text-indent: 20px;
        margin-bottom: 18px;
    }
    
    .mission-text.highlight {
        font-size: 1.1rem;
        padding: 18px 15px;
        margin-top: 10px;
    }
    
    .page-footer {
        margin-top: 30px;
        padding-top: 25px;
    }
    
    .navigation-links {
        flex-direction: column;
        gap: 12px;
    }
    
    .nav-link {
        width: 100%;
        text-align: center;
        padding: 14px 20px;
    }
    
    .footer-note {
        padding: 20px 15px;
    }
    
    .footer-note p {
        font-size: 0.95rem;
    }
    
    .signature {
        font-size: 1rem;
    }
}

/* Small mobile styles */
@media (max-width: 480px) {
    body {
        padding: 5px;
    }
    
    .book-page {
        border-radius: 6px;
        min-height: calc(100vh - 10px);
    }
    
    .page-content {
        padding: 25px 18px;
        min-height: calc(100vh - 10px);
        gap: 25px;
    }
    
    .page-header {
        margin-bottom: 25px;
        padding-bottom: 20px;
    }
    
    .page-title {
        font-size: 1.6rem;
    }
    
    .page-number {
        font-size: 0.8rem;
    }
    
    .content-section {
        gap: 25px;
    }
    
    .section-title {
        font-size: 1.3rem;
        margin-bottom: 18px;
    }
    
    .person-card {
        padding: 18px 15px;
        margin-bottom: 18px;
    }
    
    .person-name {
        font-size: 1.2rem;
        margin-bottom: 12px;
    }
    
    .person-description {
        font-size: 0.92rem;
        text-indent: 18px;
        margin-bottom: 12px;
    }
    
    .mission-card {
        padding: 20px 15px;
    }
    
    .mission-text {
        font-size: 0.95rem;
        text-indent: 18px;
        margin-bottom: 15px;
    }
    
    .mission-text.highlight {
        font-size: 1.05rem;
        padding: 15px 12px;
    }
    
    .page-footer {
        margin-top: 25px;
        padding-top: 20px;
    }
    
    .footer-note {
        padding: 18px 12px;
    }
    
    .footer-note p {
        font-size: 0.9rem;
    }
    
    .signature {
        font-size: 0.95rem;
    }
}

/* Extra small devices */
@media (max-width: 360px) {
    .page-content {
        padding: 20px 15px;
    }
    
    .page-title {
        font-size: 1.4rem;
    }
    
    .section-title {
        font-size: 1.2rem;
    }
    
    .person-name {
        font-size: 1.1rem;
    }
    
    .person-description {
        font-size: 0.9rem;
        text-indent: 15px;
    }
    
    .mission-text {
        font-size: 0.9rem;
        text-indent: 15px;
    }
}