:root {
    --primary: #2d3436;
    --secondary: #636e72;
    --accent: #0984e3;
    --bg: #ffffff;
    --text: #2d3436;
    --light-bg: #f8f9fa;
    --border: #dfe6e9;
    --shadow: rgba(0, 0, 0, 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: system-ui, -apple-system, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg);
    box-shadow: 0 2px 10px var(--shadow);
    z-index: 1000;
    padding: 15px 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo svg {
    width: 40px;
    height: 40px;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    font-size: 1rem;
    color: var(--secondary);
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s ease;
}

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

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary);
    transition: all 0.3s ease;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 80px;
    background: linear-gradient(135deg, var(--light-bg) 0%, var(--bg) 100%);
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    color: var(--primary);
}

.hero-content h1 span {
    color: var(--accent);
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--secondary);
    margin-bottom: 30px;
}

.hero-avatar {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    margin: 0 auto 30px;
    overflow: hidden;
    border: 4px solid var(--accent);
}

.hero-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background: var(--accent);
    color: white;
}

.btn-primary:hover {
    background: #0773c7;
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(9, 132, 227, 0.3);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--accent);
    color: var(--accent);
}

.btn-outline:hover {
    background: var(--accent);
    color: white;
}

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 10px;
}

.section-title p {
    color: var(--secondary);
}

.grid {
    display: grid;
    gap: 30px;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.card {
    background: var(--bg);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px var(--shadow);
}

.card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card-content {
    padding: 20px;
}

.card-content h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--primary);
}

.card-content p {
    color: var(--secondary);
    font-size: 0.95rem;
}

.skill-item {
    background: var(--light-bg);
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s ease;
}

.skill-item:hover {
    background: var(--accent);
    color: white;
}

.skill-item i {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: var(--accent);
}

.skill-item:hover i {
    color: white;
}

.skill-item h4 {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 10px;
}

.progress-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 4px;
    transition: width 0.5s ease;
}

.blog-card {
    display: flex;
    gap: 20px;
    background: var(--bg);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px var(--shadow);
    margin-bottom: 30px;
}

.blog-card img {
    width: 300px;
    height: 200px;
    object-fit: cover;
}

.blog-content {
    padding: 20px;
    flex: 1;
}

.blog-content h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--primary);
}

.blog-content p {
    color: var(--secondary);
    margin-bottom: 15px;
}

.blog-meta {
    display: flex;
    gap: 20px;
    color: var(--secondary);
    font-size: 0.9rem;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.contact-info {
    display: grid;
    gap: 20px;
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: var(--light-bg);
    border-radius: 10px;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--accent);
}

.footer {
    background: var(--primary);
    color: white;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: white;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 10px;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--accent);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--accent);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--primary);
    color: white;
    padding: 15px 25px;
    border-radius: 10px;
    box-shadow: 0 5px 20px var(--shadow);
    transform: translateX(150%);
    transition: transform 0.3s ease;
    z-index: 2000;
}

.toast.show {
    transform: translateX(0);
}

.page-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    padding: 120px 0 60px;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.page-header p {
    opacity: 0.8;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 50px;
    align-items: start;
}

.about-image {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px var(--shadow);
}

.about-image img {
    width: 100%;
    height: auto;
}

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--primary);
}

.about-text p {
    color: var(--secondary);
    margin-bottom: 20px;
    line-height: 1.8;
}

.timeline {
    position: relative;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
}

.timeline-item {
    position: relative;
    padding-bottom: 30px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -34px;
    top: 5px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent);
}

.timeline-item h4 {
    font-size: 1.2rem;
    color: var(--primary);
    margin-bottom: 5px;
}

.timeline-item span {
    color: var(--accent);
    font-size: 0.9rem;
}

.timeline-item p {
    color: var(--secondary);
    margin-top: 10px;
}

@media (max-width: 1024px) {
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
        box-shadow: 0 5px 20px var(--shadow);
        transform: translateY(-150%);
        transition: transform 0.3s ease;
    }

    .nav-links.active {
        transform: translateY(0);
    }

    .hamburger {
        display: flex;
    }

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

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

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }

    .blog-card {
        flex-direction: column;
    }

    .blog-card img {
        width: 100%;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.8rem;
    }

    .section-title h2 {
        font-size: 2rem;
    }

    .btn {
        padding: 10px 25px;
    }
}