:root {
    --bg-main: #0a0a0a;
    --bg-section: #121212;
    --bg-card: #171717;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #8b5cf6;
    --accent-hover: #7c3aed;
    --border: #262626;
    --nav-bg: rgba(10, 10, 10, 0.9);
    --sticky-shadow: rgba(139, 92, 246, 0.2);
}

[data-theme="light"] {
    --bg-main: #f8fafc;
    --bg-section: #ffffff;
    --bg-card: #f1f5f9;
    --text-main: #0f172a;
    --text-muted: #475569;
    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --border: #cbd5e1;
    --nav-bg: rgba(248, 250, 252, 0.9);
    --sticky-shadow: rgba(0, 0, 0, 0.1);
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: "Poppins", sans-serif;
    transition: background-color 0.4s ease, color 0.4s ease;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: var(--text-main);
}

header {
    background-color: var(--nav-bg);
    padding: 15px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    transition: all 0.4s ease;
}

header.sticky {
    background-color: var(--bg-main);
    padding: 10px 0;
    box-shadow: 0 4px 20px var(--sticky-shadow);
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.left {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
}

.nav-links {
    display: flex;
    justify-content: center;
    align-items: center;
}

.nav-links li {
    list-style: none;
    margin: 0 15px;
}

.nav-links li a {
    color: var(--text-main);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.theme-btn {
    background-color: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 6px 14px;
    border-radius: 15px;
    font-size: 0.85rem;
    cursor: pointer;
    font-weight: 600;
    font-family: inherit;
    transition: 0.3s ease;
}

.theme-btn:hover {
    background-color: var(--accent);
    color: #ffffff;
}

.hamburger {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
    z-index: 1100;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--accent);
    border-radius: 2px;
    transition: 0.3s ease;
}

.cursor {
    color: var(--accent);
    animation: blink 0.8s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.dynamic-text {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-muted);
    min-height: 35px;
    margin-bottom: 20px;
}

.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 10px;
}

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

.hero-buttons {
    display: flex;
    gap: 15px;
}

.hero-image img {
    width: 300px;
    height: 300px;
    object-fit: cover;
    border-radius: 50%;
    border: 3px solid var(--accent);
    box-shadow: 0 0 25px var(--accent);
}

.btn, .btn-small {
    padding: 10px 25px;
    background-color: var(--accent);
    color: #ffffff;
    border-radius: 5px;
    font-weight: 600;
    transition: 0.3s ease;
    border: none;
    cursor: pointer;
    display: inline-block;
}

.btn-small { padding: 8px 18px; font-size: 0.9rem; }

.btn:hover, .btn-small:hover {
    background-color: var(--accent-hover);
    transform: translateY(-3px);
}

.btn.outline, .btn-small.outline {
    background-color: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
}

.btn.outline:hover, .btn-small.outline:hover {
    background-color: var(--accent);
    color: #ffffff;
    transform: translateY(-3px);
}

.about-section, .certificates-section, .contact-section {
    padding: 100px 20px;
    background-color: var(--bg-section);
    text-align: center;
}

.projects-section {
    padding: 100px 20px;
    background-color: var(--bg-main);
    text-align: center;
}

h2 { font-size: 2.5rem; margin-bottom: 20px; color: var(--text-main); }
p { color: var(--text-muted); line-height: 1.6; }

.about-content p, .contact-section p {
    max-width: 800px;
    margin: 0 auto 30px auto;
    font-size: 1.1rem;
}

.skills-container { display: flex; justify-content: center; gap: 15px; flex-wrap: wrap; }

.skill-tag {
    background-color: var(--bg-card);
    color: var(--accent);
    padding: 10px 20px;
    border: 1px solid var(--accent);
    border-radius: 25px;
    font-weight: 500;
}

.projects-grid, .certificates-grid {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    max-width: 1000px;
    margin: 30px auto 0;
}

.project-card, .cert-card {
    background-color: var(--bg-card);
    padding: 30px;
    border-radius: 10px;
    width: 320px;
    text-align: left;
    transition: all 0.3s ease;
    border: 1px solid var(--border);
}

.cert-card { padding: 20px; width: 300px; }

.project-card:hover, .cert-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px var(--accent);
    border-color: var(--accent);
}

.project-card h3, .cert-card h3 { color: var(--text-main); font-size: 1.4rem; margin-bottom: 15px; }
.cert-card h3 { font-size: 1.2rem; margin-bottom: 10px; }

.project-links, .contact-links { 
    display: flex; 
    gap: 15px; 
    justify-content: center; 
    flex-wrap: wrap;
}

.project-links { justify-content: flex-start; margin-top: 20px; }
.mt-15 { margin-top: 15px; display: inline-block; }

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    nav {
        flex-direction: row;
        justify-content: space-between;
    }

    .nav-links {
        position: fixed;
        right: -100%;
        top: 0;
        height: 100vh;
        width: 70%;
        background-color: var(--bg-section);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 30px;
        transition: 0.5s ease;
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
        z-index: 1050;
    }

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

    .hero {
        flex-direction: column-reverse;
        height: auto;
        padding: 150px 20px 80px;
        text-align: center;
    }

    .hero-image {
        margin-bottom: 30px;
        margin-top: 40px;
    }

    .hero-image img {
        width: 220px;
        height: 220px;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

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

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 6px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -6px);
    }
}
.premium-footer {
    background-color: var(--bg-section);
    border-top: 1px solid var(--border);
    padding: 60px 20px 30px;
    margin-top: 100px;
    position: relative;
    overflow: hidden;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 30px;
}

.footer-brand .logo {
    font-size: 1.8rem;
    font-weight: 800;
    letter-spacing: -1px;
}

.footer-brand .tagline {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 5px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.footer-copyright p {
    font-size: 0.95rem;
    color: var(--text-main);
    font-weight: 300;
}

.highlight-name {
    color: var(--accent);
    font-weight: 600;
    border-bottom: 2px solid var(--accent);
}

.footer-status {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-card);
    padding: 8px 16px;
    border-radius: 50px;
    border: 1px solid var(--border);
}

.status-indicator {
    width: 8px;
    height: 8px;
    background-color: #10b981;
    border-radius: 50%;
    box-shadow: 0 0 10px #10b981;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.footer-status span {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
}

@media (max-width: 768px) {
    .footer-container {
        flex-direction: column;
        text-align: center;
    }
    .footer-status {
        order: -1;
    }
}