:root {
    --primary-color: #0d6efd;
    --secondary-color: #198754;
    --dark-color: #212529;
    --light-color: #f8f9fa;
    --text-color: #333;
    --transition: all 0.3s ease;
}


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

body {
    font-family: 'Poppins', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
}

/* Navigation */
.navbar {
    background-color: var(--dark-color) !important;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: var(--transition);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 2px;
}

.navbar-nav .nav-link {
    margin: 0 0.5rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.navbar-nav .nav-link:hover {
    color: var(--primary-color) !important;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background-color: var(--primary-color);
    transition: var(--transition);
    transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::after {
    width: 80%;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #18747D 0%, #0d4a52 100%);
    color: white;
    padding-top: 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-section h1 {
    color: white;
    font-weight: 700;
    margin-bottom: 1rem;
}

.hero-section h2 {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

.hero-section .lead {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.25rem;
}

.hero-image {
    animation: float 3s ease-in-out infinite;
}

.hero-image img {
    max-width: 400px;
    width: 100%;
    height: auto;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

.hero-buttons .btn {
    padding: 0.75rem 2rem;
    font-weight: 600;
    border-radius: 50px;
    transition: var(--transition);
}

.hero-buttons .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

/* Section Titles */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.title-underline {
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    margin: 0 auto 2rem;
    border-radius: 2px;
}

/* About Section */
#about {
    padding: 5rem 0;
}

#about .lead {
    font-size: 1.1rem;
    color: var(--text-color);
}

#about ul li {
    padding: 1rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: var(--transition);
}

#about ul li:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

/* Education Section */
#education {
    padding: 5rem 0;
}

.education-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.education-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.education-icon {
    margin-bottom: 1.5rem;
}

.education-content h4 {
    color: var(--text-color);
    font-weight: 600;
    margin-bottom: 1rem;
}

/* Skills Section */
#skills {
    padding: 5rem 0;
}

.skill-card {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: var(--transition);
    height: 100%;
    text-align: center;
}

.skill-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.skill-card h4 {
    color: var(--text-color);
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.skill-card ul {
    text-align: left;
}

.skill-card ul li {
    padding: 0.5rem 0;
    font-size: 1rem;
}

/* Contact Section */
#contact {
    padding: 5rem 0;
    background: linear-gradient(135deg, #18747D 0%, #0d4a52 100%);
    color: white;
}

#contact .section-title {
    color: white;
}

#contact .title-underline {
    background: white;
}

#contact .lead {
    color: rgba(255, 255, 255, 0.9);
}

.contact-item {
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    transition: var(--transition);
    height: 100%;
}

.contact-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-5px);
}

.contact-item h5 {
    color: white;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: rgba(255, 255, 255, 0.8);
}

/* Footer */
footer {
    background-color: var(--dark-color) !important;
}

/* WhatsApp Floating Button */
.whatsapp-float {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 20px;
    right: 20px;
    background-color: #25d366;
    color: white;
    border-radius: 50px;
    text-align: center;
    font-size: 30px;
    box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    text-decoration: none;
}

.whatsapp-float:hover {
    background-color: #20ba5a;
    transform: scale(1.1);
    box-shadow: 2px 2px 15px rgba(0, 0, 0, 0.4);
    color: white;
}

.whatsapp-float i {
    margin-top: 0;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

/* Language Toggle Button */
#lang-toggle {
    border-radius: 25px;
    padding: 0.5rem 1rem;
    transition: var(--transition);
}

#lang-toggle:hover {
    transform: scale(1.05);
}

/* Responsive Design */
@media (max-width: 991.98px) {
    .hero-section {
        padding-top: 120px;
    }
    
    .hero-image {
        margin-top: 2rem;
    }
}

@media (max-width: 768px) {
    .section-title {
        font-size: 2rem;
    }
    
    .hero-section h1 {
        font-size: 2rem;
        margin-top: 1.5rem;
    }
    
    .hero-section .lead {
        font-size: 1rem;
    }
    
    .hero-buttons .btn {
        display: block;
        width: 100%;
        margin-bottom: 1rem;
    }
    
    .education-card,
    .skill-card {
        margin-bottom: 2rem;
    }
}

/* Animation delays for staggered effects */
[data-aos] {
    transition-duration: 0.8s;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0a58ca;
}