:root {
    --primary-color: #1e3a8a;
    --secondary-color: #3b82f6;
    --accent-color: #f59e0b;
    --dark-color: #0f172a;
    --light-color: #f8fafc;
    --gradient-primary: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    --box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    margin: 0;
    padding: 0;
    color: #333;
}

/* Hero Section */
.hero-section {
    padding: 60px 0;
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
    flex-grow: 1;
    margin-bottom: 30px;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23ffffff' fill-opacity='0.05' fill-rule='evenodd'/%3E%3C/svg%3E");
    opacity: 0.5;
    z-index: 0;
}

Profile Image Styling
.profile-img-wrapper {
    position: relative;
    padding: 10px;
    text-align: center;
}

.profile-img {
    width: 100%;
    max-width: 280px;
    border-radius: 15px;
    box-shadow: var(--box-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 5px solid white;
    position: relative;
    z-index: 2;
}

.profile-img:hover {
    transform: scale(1.02);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.profile-img-wrapper::before {
    content: '';
    position: absolute;
    width: 100%;
    max-width: 280px;
    height: 100%;
    /* background: var(--accent-color); */
    border-radius: 15px;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

/* Hero Content Styling */
.hero-content {
    position: relative;
    z-index: 1;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    color: var(--light-color);
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #ffffff, #f0f0f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
    text-align: center;
}

.hero-subtitle {
    font-size: 1.6rem;
    font-weight: 500;
    color: var(--light-color);
    margin-bottom: 1.5rem;
    position: relative;
    display: inline-block;
    text-align: center;
}

.hero-subtitle::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--accent-color);
}

.hero-text {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.9);
    text-align: justify;
}

/* Contact Information Styling */
.contact-info {
    margin: 1.5rem 0;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 0.8rem;
    font-size: 1rem;
    color: var(--light-color);
    transition: transform 0.3s ease;
}

.contact-item:hover {
    transform: translateX(5px);
}

.contact-icon {
    width: 36px;
    height: 36px;
    background-color: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 12px;
    color: white;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
}

.contact-icon i {
    font-size: 1rem;
}

.contact-item:hover .contact-icon {
    background-color: #e69009;
    transform: scale(1.1);
}

/* Social Icons Styling */
.social-icons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 1.5rem;
}

.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    background-color: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(5px);
}

.social-icon:hover {
    transform: translateY(-5px) rotate(10deg);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.social-icon i {
    font-size: 1.2rem;
}

/* Custom social media colors */
.social-icon.github:hover { background: #333; }
.social-icon.linkedin:hover { background: #0077b5; }
.social-icon.twitter:hover { background: #1da1f2; }
.social-icon.instagram:hover { 
    background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%); 
}

/* Download Button Styling */
.btn-download {
    padding: 12px 25px;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 30px;
    background: var(--accent-color);
    border: none;
    color: white;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(245, 158, 11, 0.3);
    text-decoration: none;
}

.btn-download:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(245, 158, 11, 0.4);
    background: #e69009;
    color: white;
}

.btn-download i {
    font-size: 1.1rem;
}

/* Footer Styling */
footer {
    background-color: var(--dark-color);
    color: white;
    padding: 20px 0;
    text-align: center;
}

.footer-text {
    margin-bottom: 0;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-title {
    animation: fadeIn 0.8s ease forwards;
    animation-delay: 0.2s;
    opacity: 0;
}

.hero-subtitle {
    animation: fadeIn 0.8s ease forwards;
    animation-delay: 0.4s;
    opacity: 0;
}

.hero-text {
    animation: fadeIn 0.8s ease forwards;
    animation-delay: 0.6s;
    opacity: 0;
}

.contact-info {
    animation: fadeIn 0.8s ease forwards;
    animation-delay: 0.8s;
    opacity: 0;
}

.social-icons {
    animation: fadeIn 0.8s ease forwards;
    animation-delay: 1s;
    opacity: 0;
}

.btn-download {
    animation: fadeIn 0.8s ease forwards;
    animation-delay: 1.2s;
    opacity: 0;
}

.profile-img-wrapper {
    animation: fadeIn 0.8s ease forwards;
    animation-delay: 0.2s;
    opacity: 0;
}

/* Responsive Styles */
@media (max-width: 767.98px) {
    .profile-img-wrapper {
        margin-bottom: 2rem;
    }

    .profile-img {
        max-width: 220px;
    }

    .profile-img-wrapper::before {
        max-width: 220px;
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 1.3rem;
    }

    .hero-text {
        font-size: 1rem;
    }

    .contact-item {
        justify-content: flex-start;
    }

    .social-icons {
        justify-content: center;
    }

    .btn-download {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}

.presentation-container {
    width: 100%;
    max-width: 1600px;
    margin: 0 auto;
    padding: 20px;
}

.presentation-container iframe {
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .presentation-container {
        padding: 10px;
    }
    
    .presentation-container iframe {
        height: 400px;
    }
}