:root {
    --primary-color: #007bff; 
    --secondary-color: #198754; 
    --glass-bg: rgba(255, 255, 255, 0.1); 
    --glass-border: rgba(255, 255, 255, 0.3); 
    --text-color: #f8f9fa;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: #1a1a2e; 
}

#hero {
    position: relative;
    height: 100vh;
    background-image: url('https://wallpapercave.com/wp/wp5686574.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed; 
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden; 
    color: var(--text-color);
    padding-top: 80px; 
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

#hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 3; 
    text-align: center;
}

.hero-content h1 {
    font-size: 4rem; 
    font-weight: 700;
    animation: fadeInDown 1.5s ease-out;
}

.hero-content p {
    font-size: 1.5rem; 
    font-weight: 300;
    margin-bottom: 2rem;
    animation: fadeInUp 1.5s ease-out 0.5s forwards;
    opacity: 0;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    padding: 30px;
    color: var(--text-color);
    transition: all 0.3s ease-in-out;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-50px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(50px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.7); }
    70% { transform: scale(1.05); box-shadow: 0 0 0 10px rgba(255, 255, 255, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(255, 255, 255, 0); }
}

.cta-button {
    animation: pulse 2s infinite;
}

.section-padding {
    padding: 80px 0;
}

#about, #skills, #goals {
    background-color: #1e1e3f; 
    color: #f8f9fa;
}

.card-custom {
    background-color: #2a2a4a; 
    color: #f8f9fa;
    border: none;
    border-radius: 10px;
}

#skills .card-title {
    color: var(--primary-color) !important; 
}
 
.navbar-container {
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1030; 
    padding-top: 20px; 
    transition: padding 0.3s ease-in-out;
}

.navbar-glass {
    background: var(--glass-bg);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid var(--glass-border);
    border-radius: 25px; 
    transition: all 0.5s;
    max-width: 95%; 
    margin: 0 auto;
}

.navbar-container.scrolled {
    padding-top: 0; 
}

.navbar-container.scrolled .navbar-glass {
    max-width: 100%;
    border-radius: 0; 
    background-color: #1e1e3f !important;
    border: none;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
}

.navbar-glass .nav-link, 
.navbar-glass .navbar-brand {
    color: var(--text-color) !important;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
}

@media (max-width: 768px) {
    
    .navbar-container {
        padding-top: 10px; 
    }
    .navbar-glass {
        max-width: 98%; 
        border-radius: 15px; 
    }
    .navbar-container.scrolled .navbar-glass {
        border-radius: 0; 
    }
    #hero {
        height: 85vh; 
        background-attachment: scroll;
    }
    .hero-content h1 {
        font-size: 2.5rem; 
    }
    .hero-content p {
        font-size: 1.1rem; 
    }
    .glass-card {
        padding: 20px; 
    }
    .section-padding {
        padding: 60px 0;
    }
    .lead {
        font-size: 1rem;
    }
}