/* Variables */
:root {
    /*--color-accent-primary: #7e57c2;    /* Accent color 1 */
    /*--color-accent-secondary: #9c88ff;    /* Accent color 2, for the gradient */
    --color-accent-primary: #835fcb;    /* Accent color 1 */
    --color-accent-secondary: #a97ce7;    /* Accent color 2, for the gradient */
    --gradient-primary: linear-gradient(45deg, var(--color-accent-primary), var(--color-accent-secondary));
    
    --color-background-primary: #111111; /* Sections background (half of them) */
    --color-background-secondary: #161616; /* Other half */
    --color-banner-alpha: #1f1f1fd0; /* Main presentation banner */
    --color-elements: #2c2c2c;      /* Background color for big elements */
    --color-subelements: #4a4a4a;      /* Background for secondary elements */

    --font-primary: 'Poppins', sans-serif;
    --color-text-primary: #f0f0f0;          /* Main visible text */
    --color-text-secondary: #bdbdbd;    /* Text slighty less */
    --color-text-on-accent: #f0f0f0;    /* Text over accent color */

    --transition: all 0.3s ease;
    --shadow: 0 0px 25px rgba(0, 0, 0, 0.25);
    --shadow-strong: 0 10px 30px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] {
    --color-accent-primary: #7e57c2;    /* Accent color 1 */
    --color-accent-secondary: #9c88ff;    /* Accent color 2, for the gradient */
    --gradient-primary: linear-gradient(45deg, var(--color-accent-primary), var(--color-accent-secondary));
    
    --color-background-primary: #f1f1f1; /* Sections background (half of them) */
    --color-background-secondary: #e8e8e8; /* Other half */
    --color-banner-alpha: #ffffffd7; /* Main presentation banner */
    --color-elements: #f7f7f7;      /* Background color for big elements */
    --color-subelements: #e0e0e0;      /* Background for secondary elements */

    --font-primary: 'Poppins', sans-serif;
    --color-text-primary: rgb(20, 20, 20);          /* Main visible text */
    --color-text-secondary: #3a3a3a;    /* Text slighty less */
    --color-text-on-accent: #f0f0f0;    /* Text over accent color */

    --transition: all 0.3s ease;
    --shadow: 0 0px 15px rgba(0, 0, 0, 0.2);
    --shadow-strong: 0 0px 30px rgba(255, 255, 255, 0.2);
}


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

html {
    scroll-behavior: smooth;
}

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

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: center;
}

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

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

ul {
    list-style: none;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 40px;
    position: relative;
}


.section-title::after {
    content: '';
    position: absolute;
    height: 4px;
    width: 50px;
    background: var(--gradient-primary);
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 10px;
}

section {
    padding: 100px 0;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 30px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    color: var(--color-text-primary);
    background: var(--color-elements);
    box-shadow: var(--shadow);
    border: none;
}

.btn:hover {
    background: var(--gradient-primary);
    color: var(--color-text-on-accent);
    transform: translateY(-3px);
    z-index: 0;
    box-shadow: var(--shadow-strong);
}

.primary-btn {
    background: var(--gradient-primary);
    color: var(--color-text-on-accent);
}





/* Header and Nav */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--color-background-primary);
    backdrop-filter: blur(10px);
    z-index: 999999;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    text-align: center;
}

header.scrolled {
    padding: 10px 0;
    background: var(--color-background-primary);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-accent-primary);
}

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

.nav-links a {
    position: relative;
    font-weight: 500;
}

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

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

.hamburger {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
}

.hamburger span {
    display: block;
    width: 30px;
    height: 3px;
    background-color: var(--color-text-primary);
    border-radius: 3px;
    transition: var(--transition);
}

#theme-toggle {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--color-text-primary);
}

#language-toggle {
    background: none;
    border: none;
    cursor: pointer;
}
.flag-icon {
    height: 30px;
    border-radius: 5px;
    object-fit: cover;
}



/* Banner section */
.hero {
    padding-top: 150px;
    padding-bottom: 100px;
    position: relative;
    overflow: hidden;
    background-color: var(--color-banner-alpha);
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('img/banner.svg');
    background-size: cover;
    background-position: center;
    z-index: -1;
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 50px;
    align-items : center;
}

.hero-content {
    flex: 1;
    text-align: center;
}
.hero-content h1 {
    filter: drop-shadow(0px 0px 15px #54545471);
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    position: relative;
}

.hero-image img {
    max-width: 400px;
    border-radius: 50px;
    box-shadow: var(--shadow-strong);
    animation: float 6s ease-in-out infinite;
}

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

.hero-content h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 10px;
}

.hero-content h1 span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content h2 {
    font-size: 1.5rem;
    color: var(--color-text-secondary);
    margin-bottom: 20px;
    font-weight: 500;
}

.hero-content p {
    font-size: 1.1rem;
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
    justify-content: center;
}

.social-icons {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--color-elements);
    box-shadow: var(--shadow);
    color: var(--color-accent-primary);
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-icons a:hover {
    transform: translateY(-5px);
    color: var(--color-text-on-accent);
    background: var(--gradient-primary);
}

/* About me */
.about {
    background: var(--color-background-primary);
}

.about-content {
    display: flex;
    gap: 50px;
    align-items: flex-start;
}

.about-text {
    flex: 1;
    text-align: center;
}

.about-text p {
    margin-bottom: 15px;
    font-size: 1.05rem;
}

.about-stats {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.stat-box {
    background-color: var(--color-elements);
    padding: 25px 20px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.stat-box:hover {
    transform: scale(105%);
    box-shadow: var(--shadow-strong);
}

.stat-box i {
    font-size: 2rem;
    color: var(--color-accent-primary);
    margin-bottom: 15px;
}

.stat-box h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.stat-box p {
    color: var(--color-text-secondary);
}

/* Projects */
.projects {
    background-color: var(--color-background-secondary);
}

.project-filters {
    display: flex;
    justify-content: center;
    gap: 15px;
    padding: 40px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 20px;
    border-radius: 30px;
    background-color: var(--color-elements);
    border: none;
    cursor: pointer;
    font-family: var(--font-primary);
    font-weight: 500;
    transition: var(--transition);
    box-shadow: var(--shadow);
    color: var(--color-text-secondary);
}
.filter-btn:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-strong);
}

.filter-btn.active, .filter-btn:hover {
    background: var(--gradient-primary);
    color: var(--color-text-on-accent);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
    text-align: center;
    
}

.project-card {
    background-color: var(--color-elements);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-strong);
}

.project-image {
    position: relative;
    overflow: hidden;
    height: 200px;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-link, .project-github {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background-color: white;
    border-radius: 50%;
    color: var(--color-accent-primary);
    font-size: 1.2rem;
    transition: var(--transition);
}

.project-link:hover, .project-github:hover {
    background: var(--gradient-primary);
    color: white;
    transform: translateY(-5px);
}

.project-info {
    padding: 20px;
}

.project-info h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.project-info p {
    color: var(--color-text-secondary);
    margin-bottom: 15px;
    font-size: 0.95rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.project-tags span {
    padding: 4px 12px;
    background-color: var(--color-subelements);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.projects-cta {
    text-align: center;
}

/* Skills */
.skills {
    background: var(--color-background-primary);
}

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

.skills-category h3 {
    font-size: 1.3rem;
    margin-bottom: 25px;
    position: relative;
    padding-left: 15px;
}

.skills-category h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 25px;
    background: var(--gradient-primary);
    border-radius: 5px;
}

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

.skill-bar {
    width: 100%;
}

.skill-name {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.skill-progress {
    height: 30px;
    background-color: var(--color-elements);
    border-radius: 10px;
    overflow: hidden;
}

.skill-percentage {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 10px;
    color: var(--color-text-on-accent);
    font-size: 1rem;
    font-weight: 500;
    transition: width 1s ease-in-out;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 20px;
}

.skill-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 8px;
}

.skill-icon i {
    font-size: 2rem;
    color: var(--color-accent-primary);
    transition: var(--transition);
}
.skill-icon span {
    color: var(--color-text-secondary);
}

.skill-icon:hover i {
    transform: translateY(-5px);
}

/* Education/Experience */
.education {
    background-color: var(--color-background-secondary);
}

.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    width: 2px;
    background-color: var(--color-accent-primary);
    top: 0;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

.timeline-item {
    padding: 20px 0;
    position: relative;
    width: 100%;
    display: flex;
    justify-content: center;
}

.timeline-date {
    width: 120px;
    padding: 10px 0;
    text-align: center;
    background: var(--gradient-primary);
    color: var(--color-text-on-accent);
    border-radius: 30px;
    font-weight: 500;
    box-shadow: var(--shadow);
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.timeline-content {
    width: 50%;
    padding: 30px;
    background-color: var(--color-elements);
    border-radius: 10px;
    box-shadow: var(--shadow);
    position: relative;
    margin-top: 30px;
    transition: var(--transition);
}

.timeline-content:hover {
    transform: scale(105%);
    box-shadow: var(--shadow-strong);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: 300px;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-right: 300px;
}

.timeline-content h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.timeline-content h4 {
    color: var(--color-accent-primary);
    font-size: 1rem;
    margin-bottom: 15px;
    font-weight: 500;
}
.timeline-content p {
    color: var(--color-text-secondary);
}

/* Contact */
.contact {
    background: var(--color-background-primary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

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

.contact-item i {
    width: 50px;
    height: 50px;
    min-width: 50px;
    background: var(--gradient-primary);
    color: var(--color-text-on-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 1.2rem;
}

.contact-item h3 {
    font-size: 1.1rem;
    margin-bottom: 5px;
    color: var(--color-text-secondary);
}
.contact-item p {
    color: var(--color-text-primary);
}

.contact-social {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.contact-social a {
    box-shadow: var(--shadow);
    width: 45px;
    height: 45px;
    background-color: var(--color-elements);
    color: var(--color-accent-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 1.2rem;
    transition: var(--transition);
}

.contact-social a:hover {
    background: var(--gradient-primary);
    color: var(--color-text-on-accent);
    transform: translateY(-5px);
}

.contact-form {
    background-color: var(--color-elements);
    padding: 40px 40px 25px 40px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
}
.contact-form button {
    font-size: 1rem;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: none;
    border-radius: 5px;
    background-color: var(--color-subelements);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition);
    color: var(--color-text-primary);
    text-align: center;
}

.form-group textarea {
    height: 150px;
    resize: none;
}

.form-group input:focus,
.form-group textarea:focus {
    box-shadow: 0 0 0 2px var(--color-accent-primary);
    outline: none;
}

/* Footer */
footer {
    background-color: var(--color-accent-primary);
    color: var(--color-text-primary);
    padding: 20px 0;
}

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

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

.footer-links a:hover {
    color: var(--color-text-secondary);
}

/* Animation on load */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(100px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content, .about-text, .skills-category, .timeline-item, .contact-item, .project-card {
    animation: fadeInUp 0.75s ease forwards;
    opacity: 0;
    text-align: center;

}

.contact-item {
    text-align: left;
}


/*  Responsive Media Queries */
@media (max-width: 1190px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 35%;
        height: 100vh;
        background-color: var(--color-elements);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: var(--transition);
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .hamburger {
        display: flex;
        z-index: 101;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }

    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .project-filters {
        overflow-x: auto;
        padding-bottom: 10px;
    }
}

@media (max-width: 992px) {
    .nav-links {
        width: 45%;
    }
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-buttons, .social-icons {
        justify-content: center;
    }
    
    .about-content {
        flex-direction: column;
    }
    
    .skills-content {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 30px;
    }
    
    .timeline-date {
        left: 10px;
        transform: none;
    }
    
    .timeline-content {
        width: calc(100% - 80px);
        margin-left: 50px !important;
    }
    .timeline-item:nth-child(even) .timeline-content {
        margin-right: 0px;
    }
}

@media (max-width: 600px) {
    .nav-links {
        width: 65%;
    }
    .hero-buttons {
        flex-direction: column;
        gap: 10px;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-content h2 {
        font-size: 1.2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
        margin-bottom: 40px;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
}