/* ===========================
   CSS Variables & Reset
   =========================== */

:root {
    --color-black: #000000;
    --color-white: #ffffff;
    --color-gray-dark: #1a1a1a;
    --color-gray: #333333;
    --color-gray-light: #666666;
    --color-gray-lighter: #999999;
    --color-gray-lightest: #e5e5e5;
    
    --font-primary: 'Spectral', serif;
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    --shadow-small: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.15);
    --shadow-large: 0 8px 30px rgba(0, 0, 0, 0.2);
    
    --max-width: 1200px;
    --section-padding: 100px 0;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-white);
    color: var(--color-black);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

input,
textarea {
    font-family: inherit;
}

/* ===========================
   Utility Classes
   =========================== */

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    position: relative;
    text-transform: uppercase;
    letter-spacing: 3px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background-color: var(--color-black);
}

/* ===========================
   Navigation
   =========================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    padding: 20px 0;
    z-index: 1000;
    transition: var(--transition-normal);
    border-bottom: 1px solid var(--color-gray-lightest);
}

.navbar.scrolled {
    padding: 15px 0;
    box-shadow: var(--shadow-small);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    transition: var(--transition-fast);
}

.logo a:hover {
    color: var(--color-gray);
}

.nav-menu {
    display: flex;
    gap: 40px;
}

.nav-link {
    font-size: 1rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    transition: var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-black);
    transition: var(--transition-normal);
}

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

.nav-link:hover {
    color: var(--color-gray);
}

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

.hamburger span {
    width: 25px;
    height: 2px;
    background-color: var(--color-black);
    transition: var(--transition-normal);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

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

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

/* ===========================
   Hero Section
   =========================== */

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 120px 20px 80px;
    position: relative;
}

.hero-content {
    max-width: var(--max-width);
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text {
    animation: fadeInUp 1s ease;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.highlight {
    position: relative;
    display: inline-block;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 10px;
    left: 0;
    width: 100%;
    height: 15px;
    background-color: var(--color-gray-lightest);
    z-index: -1;
}

.hero-subtitle {
    font-size: 2rem;
    font-weight: 400;
    color: var(--color-gray);
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--color-gray-light);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.btn {
    padding: 15px 35px;
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: 2px solid var(--color-black);
    transition: var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--color-black);
}

.btn-secondary:hover {
    background-color: var(--color-black);
    color: var(--color-white);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-placeholder {
    width: 350px;
    height: 350px;
    border: 3px solid var(--color-black);
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.image-placeholder::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 20px;
    right: -20px;
    bottom: -20px;
    border: 3px solid var(--color-gray-lightest);
    z-index: -1;
}

.image-placeholder i {
    font-size: 150px;
    color: var(--color-gray-lightest);
}

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

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
}

.mouse {
    width: 25px;
    height: 40px;
    border: 2px solid var(--color-black);
    border-radius: 15px;
    position: relative;
}

.mouse::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 8px;
    background-color: var(--color-black);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% {
        top: 8px;
        opacity: 1;
    }
    100% {
        top: 24px;
        opacity: 0;
    }
}

/* ===========================
   About Section
   =========================== */

.about {
    padding: var(--section-padding);
    background-color: var(--color-gray-dark);
    color: var(--color-white);
}

.about .section-title {
    color: var(--color-white);
}

.about .section-title::after {
    background-color: var(--color-white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    align-items: center;
}

.about-image {
    display: flex;
    justify-content: center;
}

.profile-image {
    width: 300px;
    height: 300px;
    border: 3px solid var(--color-white);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.profile-image::before {
    content: '';
    position: absolute;
    top: -15px;
    left: -15px;
    right: -15px;
    bottom: -15px;
    border: 3px solid var(--color-gray);
    border-radius: 50%;
    z-index: -1;
}

.profile-image i {
    font-size: 150px;
    color: var(--color-gray);
}

.profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.about-text {
    max-width: 700px;
}

.about-description {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 20px;
    color: var(--color-gray-lightest);
}

.social-links {
    display: flex;
    gap: 20px;
    margin-top: 30px;
}

.social-link {
    width: 50px;
    height: 50px;
    border: 2px solid var(--color-white);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.3rem;
    transition: var(--transition-normal);
}

.social-link:hover {
    background-color: var(--color-white);
    color: var(--color-black);
    transform: translateY(-5px);
}

/* ===========================
   Projects Section
   =========================== */

.projects {
    padding: var(--section-padding);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.project-card {
    border: 2px solid var(--color-gray-lightest);
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-medium);
    border-color: var(--color-black);
}

.project-image {
    height: 200px;
    background-color: var(--color-gray-lightest);
    display: flex;
    justify-content: center;
    align-items: center;
    border-bottom: 2px solid var(--color-gray-lightest);
}

.project-image i {
    font-size: 80px;
    color: var(--color-gray-light);
}

.project-content {
    padding: 30px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    letter-spacing: 1px;
}

.project-description {
    font-size: 1rem;
    color: var(--color-gray-light);
    line-height: 1.6;
    margin-bottom: 20px;
    flex: 1;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.tag {
    padding: 5px 15px;
    background-color: var(--color-black);
    color: var(--color-white);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.project-links {
    display: flex;
    gap: 20px;
}

.project-link {
    display: flex;
    align-items: center;
    gap: 5px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
    transition: var(--transition-fast);
    border-bottom: 2px solid transparent;
}

.project-link:hover {
    color: var(--color-gray);
    border-bottom-color: var(--color-black);
}

.project-date {
    font-size: 0.9rem;
    color: var(--color-gray-light);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-item a {
    color: var(--color-gray-light);
    transition: var(--transition-fast);
}

.contact-item a:hover {
    color: var(--color-black);
}

/* ===========================
   Skills Section
   =========================== */

.skills {
    padding: var(--section-padding);
    background-color: var(--color-gray-lightest);
}

.skills-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 50px;
}

.skill-category {
    background-color: var(--color-white);
    padding: 40px;
    border: 2px solid var(--color-black);
}

.category-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 30px;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-align: center;
}

.skill-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.skill-item {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.skill-name {
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.skill-percentage {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-gray-light);
}

.skill-bar {
    height: 10px;
    background-color: var(--color-gray-lightest);
    border: 1px solid var(--color-black);
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background-color: var(--color-black);
    width: 0;
    transition: width 1.5s ease;
}

/* ===========================
   Certificates Section
   =========================== */

.certificates {
    padding: var(--section-padding);
    background-color: var(--color-white);
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
}

.certificate-card {
    background-color: var(--color-white);
    border: 2px solid var(--color-gray-lightest);
    padding: 25px;
    text-align: center;
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
}

.certificate-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
    border-color: var(--color-black);
}

.certificate-image {
    width: 100%;
    height: 180px;
    background-color: var(--color-gray-lightest);
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 20px;
    border: 2px solid var(--color-gray-lightest);
    transition: var(--transition-normal);
}

.certificate-card:hover .certificate-image {
    border-color: var(--color-black);
}

.certificate-image i {
    font-size: 60px;
    color: var(--color-gray-light);
}

.certificate-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.certificate-info h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
    line-height: 1.4;
}

.certificate-info p {
    font-size: 0.9rem;
    color: var(--color-gray-light);
    font-weight: 400;
}

/* ===========================
   Contact Section
   =========================== */

.contact {
    padding: var(--section-padding);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.contact-info p {
    font-size: 1.1rem;
    color: var(--color-gray-light);
    line-height: 1.8;
    margin-bottom: 30px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 25px;
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.contact-item i {
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    border: 2px solid var(--color-black);
    display: flex;
    justify-content: center;
    align-items: center;
}

.contact-item h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-item p {
    font-size: 1rem;
    color: var(--color-gray-light);
    margin: 0;
}

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

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group input,
.form-group textarea {
    padding: 15px;
    font-size: 1rem;
    border: 2px solid var(--color-gray-lightest);
    background-color: var(--color-white);
    transition: var(--transition-fast);
}

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

.form-group textarea {
    resize: vertical;
}

.contact-form .btn {
    width: fit-content;
    justify-content: center;
}

.form-message {
    padding: 15px;
    margin-top: 20px;
    border: 2px solid;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
}

.form-message.success {
    background-color: var(--color-white);
    border-color: var(--color-black);
    color: var(--color-black);
}

.form-message.error {
    background-color: var(--color-black);
    border-color: var(--color-black);
    color: var(--color-white);
}

/* ===========================
   Footer
   =========================== */

.footer {
    background-color: var(--color-black);
    color: var(--color-white);
    padding: 40px 0;
    position: relative;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-text p {
    font-size: 1rem;
    letter-spacing: 1px;
}

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

.footer-links a {
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition-fast);
    border-bottom: 2px solid transparent;
}

.footer-links a:hover {
    color: var(--color-gray-lightest);
    border-bottom-color: var(--color-white);
}

.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--color-black);
    color: var(--color-white);
    border: 2px solid var(--color-white);
    font-size: 1.2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 999;
}

.scroll-top.show {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background-color: var(--color-white);
    color: var(--color-black);
    transform: translateY(-5px);
}

/* ===========================
   Animations
   =========================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===========================
   Responsive Design
   =========================== */

@media (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        font-size: 1.5rem;
    }
    
    .hero-content {
        gap: 40px;
    }
    
    .image-placeholder {
        width: 300px;
        height: 300px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background-color: var(--color-white);
        width: 100%;
        padding: 40px 20px;
        gap: 30px;
        box-shadow: var(--shadow-medium);
        transition: var(--transition-normal);
        border-top: 1px solid var(--color-gray-lightest);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text {
        order: 2;
    }
    
    .hero-image {
        order: 1;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.3rem;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .profile-image {
        width: 250px;
        height: 250px;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    :root {
        --section-padding: 60px 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .btn {
        padding: 12px 25px;
        font-size: 0.9rem;
    }
    
    .image-placeholder {
        width: 250px;
        height: 250px;
    }
    
    .profile-image {
        width: 200px;
        height: 200px;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .skill-category {
        padding: 25px;
    }
    
    .certificates-grid {
        grid-template-columns: 1fr;
    }
    
    .certificate-image {
        height: 150px;
    }
}