:root {
    --primary: #2c3e50;
    --secondary: #3498db;
    --accent: #e74c3c;
    --light: #ecf0f1;
    --dark: #2c3e50;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f5f7fa;
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
}

header {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 2rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('/assets/header.jpg') center/cover;
    opacity: 0.2;
    z-index: 1;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 2;
}

.logo {
    width: 100px;
    height: 100px;
    background-color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.logo i {
    font-size: 3rem;
    color: var(--primary);
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
}

.nav-container {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    transition: all 0.3s;
    position: relative;
    padding-bottom: 5px;
}

.nav-links a:hover {
    color: var(--secondary);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary);
    transition: width 0.3s;
}

.nav-links a:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    cursor: pointer;
    font-size: 1.5rem;
    transition: transform 0.3s;
}

.hamburger:hover {
    transform: rotate(90deg);
}

.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}

section {
    margin-bottom: 3rem;
    background-color: white;
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: all 0.5s ease;
    opacity: 0;
    transform: translateY(20px);
}

section.visible {
    opacity: 1;
    transform: translateY(0);
}

section:hover {
    transform: translateY(-5px) !important;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

h2 {
    color: var(--primary);
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 10px;
}

h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--secondary);
    transition: width 0.5s;
}

h2:hover::after {
    width: 120px;
}

.definition-box {
    background-color: #f8f9fa;
    border-left: 4px solid var(--secondary);
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
    transition: all 0.3s;
    transform-origin: left center;
}

.definition-box:hover {
    transform: scale(1.02);
    box-shadow: 5px 5px 15px rgba(0,0,0,0.1);
}

.highlight {
    color: var(--accent);
    font-weight: bold;
}

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

.card {
    background-color: white;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    transition: all 0.5s;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--secondary), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s;
}

.card:hover::before {
    transform: scaleX(1);
}

.card:hover {
    transform: translateY(-10px) rotate(1deg);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.card h3 {
    color: var(--primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
}

.card h3 i {
    margin-right: 10px;
    color: var(--secondary);
}

.card-img {
    height: 200px;
    width: 100%;
    object-fit: cover;
    border-radius: 6px;
    margin-bottom: 1rem;
    transition: transform 0.5s;
}

.card:hover .card-img {
    transform: scale(1.05);
}

.quote {
    font-style: italic;
    text-align: center;
    padding: 2rem;
    background-color: #f8f9fa;
    border-radius: 8px;
    margin: 2rem 0;
    position: relative;
    transition: all 0.5s;
}

.quote:hover {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    transform: scale(1.02);
}

.quote::before, .quote::after {
    content: '"';
    font-size: 3rem;
    color: var(--secondary);
    opacity: 0.3;
    position: absolute;
    transition: all 0.3s;
}

.quote:hover::before, .quote:hover::after {
    color: white;
    opacity: 0.7;
}

.quote::before {
    top: 10px;
    left: 20px;
}

.quote::after {
    bottom: 10px;
    right: 20px;
}

footer {
    background-color: var(--primary);
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 3rem;
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://images.unsplash.com/photo-1450101499163-c8848c66ca85?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80') center/cover;
    opacity: 0.1;
    z-index: 1;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.social-links {
    margin: 1rem 0;
}

.social-links a {
    color: white;
    margin: 0 10px;
    font-size: 1.5rem;
    transition: all 0.3s;
    display: inline-block;
}

.social-links a:hover {
    color: var(--secondary);
    transform: translateY(-5px) scale(1.2);
}

.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--secondary);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    z-index: 99;
    transform: scale(0.8);
}

.back-to-top:hover {
    transform: scale(1) !important;
    background-color: var(--accent);
}

.back-to-top.active {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
}

.floating-shapes {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.shape {
    position: absolute;
    opacity: 0.1;
    border-radius: 50%;
    animation: float 15s infinite linear;
}

@keyframes float {
    0% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-100px) rotate(180deg); }
    100% { transform: translateY(0) rotate(360deg); }
}

.parallax-img {
    width: 100%;
    height: 400px;
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    margin: 2rem 0;
    border-radius: 8px;
    position: relative;
    overflow: hidden;
}

.parallax-img::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.3);
}

.parallax-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    text-align: center;
    z-index: 2;
    width: 80%;
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: white;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: left 0.3s;
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .nav-links li {
        margin: 1rem 0;
    }
    
    .hamburger {
        display: block;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .parallax-img {
        background-attachment: scroll;
        height: 300px;
    }
}