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

:root {
    --primary-color: #1a5490;
    --secondary-color: #e63946;
    --accent-color: #f77f00;
    --text-dark: #2b2d42;
    --text-light: #6c757d;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

.nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background: var(--bg-white);
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
    list-style: none;
    display: flex;
    flex-direction: column;
    padding: 5rem 2rem 2rem;
    transition: var(--transition);
    z-index: 999;
}

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

.nav-menu li {
    margin-bottom: 1.5rem;
}

.nav-link {
    color: var(--text-dark);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 500;
    transition: var(--transition);
    display: block;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
}

.nav-link:hover {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, #2a6ba0 100%);
    padding: 6rem 1.5rem 2rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23ffffff" fill-opacity="0.05"><path d="M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z"/></g></g></svg>');
    opacity: 0.3;
}

.hero-content {
    text-align: center;
    color: white;
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.8s ease-out;
}

.hero-image-container {
    margin-bottom: 2rem;
    display: inline-block;
    border-radius: 50%;
    padding: 0.5rem;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-lg);
    animation: fadeInScale 1s ease-out;
}

.hero-image {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid white;
    display: block;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 1.2rem;
    opacity: 0.95;
    font-weight: 300;
}

/* Sections */
.section {
    padding: 4rem 0;
}

.section-alt {
    background-color: var(--bg-light);
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 1rem;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--accent-color);
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

/* About Section */
.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.fun-fact {
    background: linear-gradient(135deg, var(--accent-color), #ff9500);
    color: white;
    padding: 1.5rem;
    border-radius: 12px;
    margin-top: 2rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    box-shadow: var(--shadow);
}

.fun-fact-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.fun-fact-text {
    margin: 0;
    font-size: 1rem;
    line-height: 1.6;
}

/* Interests Grid */
.interests-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: 2rem;
}

.interest-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
    border: 2px solid transparent;
}

.interest-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.interest-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.interest-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.interest-description {
    color: var(--text-light);
    line-height: 1.7;
}

/* Jokes Section */
.joke-container {
    max-width: 700px;
    margin: 0 auto;
}

.joke-display {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    min-height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-left: 4px solid var(--accent-color);
}

.joke-text {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--text-dark);
    text-align: center;
    margin: 0;
}

.joke-button {
    width: 100%;
    padding: 1.2rem 2rem;
    background: linear-gradient(135deg, var(--primary-color), #2a6ba0);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.joke-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.joke-button:active {
    transform: translateY(0);
}

.button-icon {
    font-size: 1.5rem;
}

/* Books Section */
.book-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    margin-bottom: 2rem;
}

.filter-button {
    padding: 0.75rem 1.5rem;
    background: var(--bg-white);
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.filter-button:hover {
    background: var(--primary-color);
    color: white;
}

.filter-button.active {
    background: var(--primary-color);
    color: white;
}

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

.book-card {
    background: var(--bg-white);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-left: 4px solid var(--primary-color);
}

.book-card:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-lg);
}

.book-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.book-author {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 1rem;
    font-style: italic;
}

.book-description {
    color: var(--text-dark);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.book-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.book-tag {
    padding: 0.25rem 0.75rem;
    background: var(--bg-light);
    color: var(--primary-color);
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 2rem 0;
    text-align: center;
}

.footer-text {
    margin: 0;
    opacity: 0.9;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Tablet Styles */
@media (min-width: 768px) {
    .nav-toggle {
        display: none;
    }

    .nav-menu {
        position: static;
        width: auto;
        height: auto;
        flex-direction: row;
        background: transparent;
        box-shadow: none;
        padding: 0;
        gap: 2rem;
    }

    .nav-link {
        border-bottom: none;
        padding: 0;
    }

    .hero-title {
        font-size: 3.5rem;
    }

    .hero-subtitle {
        font-size: 1.5rem;
    }

    .hero-image {
        width: 250px;
        height: 250px;
    }

    .interests-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .books-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .section-title {
        font-size: 2.5rem;
    }
}

/* Desktop Styles */
@media (min-width: 1024px) {
    .hero-title {
        font-size: 4rem;
    }

    .interests-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .books-grid {
        grid-template-columns: repeat(3, 1fr);
    }

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