:root {
    --light-background-primary: rgb(255, 255, 255);
    --light-background-secondary: rgba(230, 230, 230, 0.2);
    --light-text-primary: rgb(52, 52, 52);
    --light-text-secondary: rgb(102, 102, 102);
    --light-accent: rgb(0, 100, 205);
    --light-accent-hover: rgb(0, 80, 165);
    --light-border: rgba(0, 0, 0, 0.2);
    --light-glass-border: rgba(50, 50, 50, 0.2);
    --light-code-background: rgba(248, 248, 248, 0.4);
    --light-card-background: rgba(255, 255, 255, 0.4);
    --light-shadow: rgba(0, 0, 0, 0.4);
    --light-background-gradient-color: rgba(0, 100, 205, 0.8);

    --dark-background-primary: rgb(10, 10, 10);
    --dark-background-secondary: rgba(30, 30, 30, 0.5);
    --dark-text-primary: rgb(225, 225, 225);
    --dark-text-secondary: rgb(160, 160, 160);
    --dark-accent: rgb(61, 130, 209);
    --dark-accent-hover: rgb(80, 160, 255);
    --dark-border: rgba(200, 200, 200, 0.1);
    --dark-glass-border: rgba(150, 150, 150, 0.1);
    --dark-code-background: rgba(40, 45, 50, 0.8);
    --dark-card-background: rgba(30, 30, 30, 0.8);
    --dark-shadow: rgba(0, 0, 0, 0.5);
    --dark-background-gradient-color: rgba(80, 160, 255, 0.4);

    --font-primary: "Roboto";
    --font-code: "Jetbrains Mono";

    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 3rem;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;

    --transition-fast: 0.2s ease;
    --transition-normal: 0.5s ease;
    --transition-slow: 1s ease;

    --blur-sm: 5px;
    --blur-md: 10px;
    --blur-lg: 20px;

    --background-primary: var(--light-background-primary);
    --background-secondary: var(--light-background-secondary);
    --text-primary: var(--light-text-primary);
    --text-secondary: var(--light-text-secondary);
    --accent: var(--light-accent);
    --accent-hover: var(--light-accent-hover);
    --accent-focus: rgb(160, 140, 190);
    --border: var(--light-border);
    --glass-border: var(--light-glass-border);
    --code-background: var(--light-code-background);
    --card-background: var(--light-card-background);
    --shadow: var(--light-shadow);
    --background-gradient-color: var(--light-background-gradient-color);
}

.dark-theme {
    --background-primary: var(--dark-background-primary);
    --background-secondary: var(--dark-background-secondary);
    --text-primary: var(--dark-text-primary);
    --text-secondary: var(--dark-text-secondary);
    --accent: var(--dark-accent);
    --accent-hover: var(--dark-accent-hover);
    --border: var(--dark-border);
    --glass-border: var(--dark-glass-border);
    --code-background: var(--dark-code-background);
    --card-background: var(--dark-card-background);
    --shadow: var(--dark-shadow);
    --background-gradient-color: var(--dark-background-gradient-color);
}

:focus-visible {
    outline: 2px solid var(--accent-focus);
}

* {
    margin: 0;
    padding: 0;

    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

/* #canvas {
    position: fixed;

    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    height: 100vh;

    z-index: -100;

    pointer-events: none;
} */

@property --fadeBackgroundGradientValue {
    syntax: "<percentage>";
    inherits: false;
    initial-value: 30%;
}

body {
    font-family: var(--font-primary);

    color: var(--text-primary);

    line-height: 1.6;

    background-color: var(--background-primary);

    background-image: radial-gradient(circle at 20% 30%, var(--background-gradient-color) 20%, transparent var(--fadeBackgroundGradientValue)),
                      radial-gradient(circle at 80% 70%, var(--background-gradient-color) 20%, transparent var(--fadeBackgroundGradientValue));

    background-attachment: fixed;

    overflow-x: hidden;

    transition: color var(--transition-normal), background-color var(--transition-normal);

    animation: fadeBackgroundGradient 5s infinite alternate;
}

a {
    color: var(--accent);

    text-decoration: none;

    transition: color var(--transition-normal);
}

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

ul {
    list-style: none;
}

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

.container {
    margin: 0 auto;
    padding: 0 var(--space-md);

    max-width: 1200px;
}

.section-title {
    position: relative;

    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);

    font-size: 2.5rem;
    text-align: center;
}

.section-title::after {
    content: "";

    position: absolute;
    left: 50%;
    bottom: 0;
    width: 80px;
    height: 4px;

    transform: translateX(-50%);

    background-color: var(--accent);

    border-radius: 2px;
}

.button {
    display: inline-block;

    padding: 0.75rem 1.5rem;

    font-size: 1rem;
    font-weight: 600;

    background-color: transparent;

    border: 2px solid transparent;
    border-radius: var(--radius-md);

    text-align: center;

    cursor: pointer;

    transition: color var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.primary-button {
    color: white;

    background-color: var(--accent);

    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.4);
}

.primary-button:hover {
    background-color: var(--accent-hover);

    color: white;

    transform: translateY(-2px);

    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.6);
}

.secondary-button {
    color: var(--accent);

    border: 2px solid var(--accent);
}

.secondary-button:hover {
    background-color: var(--accent);

    color: white;

    transform: translateY(-2px);

    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.6);
}

.small-button {
    padding: 0.5rem 1rem;

    font-size: 0.8rem;
}

header {
    padding: 1rem 0;

    position: fixed;

    top: 0;
    left: 0;
    width: 100%;

    background-color: var(--background-secondary);

    backdrop-filter: blur(var(--blur-md));
    -webkit-backdrop-filter: blur(var(--blur-md));

    border-bottom: 1px solid var(--border);

    transition: background-color var(--transition-normal), border-color var(--transition-normal);

    z-index: 1000;
}

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

.callsign h1 {
    margin-bottom: 0.2rem;

    font-size: 1.8rem;

    color: var(--accent);
}

.callsign p {
    position: relative;

    font-family: "Jetbrains Mono";
    font-size: 0.8rem;

    color: var(--text-secondary);

    transition: color var(--transition-normal);
}

#typewriter {
    padding-left: var(--space-xs);
    padding-right: var(--space-xs);

    position: absolute;

    min-height: 100%;

    border-right: 4px solid var(--accent);

    white-space: pre;

    transition: border;

    animation: typewriter-blink 2s infinite;
}

#typewriter span {
    animation: typewriter-fadeIn 0.8s ease-out;
}

nav ul {
    display: flex;
    gap: var(--space-lg);
}

nav ul li a {
    position: relative;

    font-weight: 500;

    color: var(--text-primary);
}

nav ul li a::after {
    content: "";

    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;

    background-color: var(--accent);

    transition: width var(--transition-fast);
}

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

nav ul li a.active {
    color: var(--accent);
}

nav ul li a.active::after {
    width: 100%;
}

#theme-toggle-button {
    display: flex;
    align-items: center;
    justify-content: center;

    padding: 0.5rem;

    width: 40px;
    height: 40px;

    background-color: rgba(128, 128, 128, 0.2);

    font-size: 1.2rem;

    color: var(--text-primary);

    border: 1px solid var(--glass-border);
    border-radius: 50%;

    transition: background-color var(--transition-fast), transform var(--transition-fast);

    cursor: pointer;

    text-align: center;
}

#theme-toggle-button:hover {
    background-color: rgba(128, 128, 128, 0.4);
}

#theme-toggle-button.initialized {
    animation: pulse 1s;
}

#theme-toggle-button i {
    vertical-align: middle;
}

.dark-theme #theme-toggle-button .bi-sun-fill {
    display: inline-block;
}

.dark-theme #theme-toggle-button .bi-moon-fill {
    display: none;
}

#theme-toggle-button .bi-sun-fill {
    display: none;
}

#theme-toggle-button .bi-moon-fill {
    display: inline-block;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;

    width: 30px;
    height: 21px;
}

.mobile-menu-toggle span {
    display: block;

    width: 100%;
    height: 3px;

    background-color: var(--text-primary);

    border-radius: 3px;

    transition: transform var(--transition-fast);
}

main {
    backdrop-filter: blur(var(--blur-lg));
    -webkit-backdrop-filter: blur(var(--blur-lg));
}

#home {
    display: flex;
    align-items: center;

    padding: 150px 0 var(--space-xl) 0;

    height: 100vh;
}

#home .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xl);
}

.home-content {
    flex: 1;

    animation: fadeInLeft 1s ease-out;
}

.home-content h2 {
    margin-bottom: var(--space-md);

    font-size: 3.5rem;
    line-height: 1.2;

    position: relative;
    display: inline-block;
}

.home-content p {
    margin-bottom: var(--space-lg);

    font-size: 1.25rem;
    color: var(--text-secondary);

    max-width: 600px;
}

.cta-buttons {
    display: flex;
    gap: var(--space-md);
}

.profile-picture {
    flex: 1;

    display: flex;
    justify-content: center;
    align-items: center;

    animation: fadeInRight 1s ease-out;
}

.profile-picture img {
    border: 2px solid var(--glass-border);
    border-radius: 50%;

    box-shadow: 0 8px 16px var(--shadow);
}

#about {
    position: relative;

    padding: var(--space-xl) 0;

    background-color: transparent;
}

#about::before {
    content: "";

    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;

    background-color: var(--background-secondary);

    z-index: -1;
}

.about-content {
    display: flex;
    gap: var(--space-xl);
}

.about-text {
    flex: 1;
}

.about-text p {
    margin-bottom: var(--space-lg);

    font-size: 1.1rem;
}

.about-text h3 {
    margin-bottom: var(--space-md);

    font-size: 1.8rem;
}

.skills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-lg);
}

.skill-category {
    flex: 1;

    min-width: 200px;
}

.skill-category h4 {
    margin-bottom: var(--space-sm);

    font-size: 1.2rem;

    color: var(--accent);
}

.skill-category ul li {
    padding: var(--space-xs) 0;

    color: var(--text-secondary);

    white-space: nowrap;
}

.code-snippet {
    flex: 1;

    padding: 5px;

    height: min-content;

    background-color: var(--code-background);

    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);

    box-shadow: 0 4px 8px var(--shadow);
}

.code-header {
    padding: var(--space-sm) var(--space-md);

    background-color: var(--background-secondary);

    border-radius: 10px;
}

.code-header span {
    font-family: var(--font-code);
    font-size: 0.9rem;

    color: var(--text-secondary);
}

.code-snippet pre {
    padding: var(--space-md);

    overflow-x: auto;
}

.code-snippet code {
    font-family: var(--font-code);
    font-size: 0.9rem;
    line-height: 1.5;

    color: var(--text-primary);
}

#projects {
    padding: var(--space-xl) 0;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.project-card {
    padding: var(--space-xs);

    background-color: var(--card-background);

    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);

    box-shadow: 0 4px 8px var(--shadow);

    opacity: 0;

    transition: background-color var(--transition-fast), box-shadow var(--transition-fast);

    transform: translateY(20px);
}

.project-card.animate-in {
    animation: fadeInUp 0.6s forwards;
}

.project-card.animate-out {
    animation: fadeOutDown 0.6s forwards;
}

.project-card:hover {
    box-shadow: 0 4px 16px var(--accent-hover);
}

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

    padding: var(--space-md);

    max-height: fit-content;
}

.project-image img {
    background-color: rgba(0, 0, 0, 0.1);

    border-radius: var(--radius-md);

    transition: transform 0.5s;
}

.project-content {
    padding: var(--space-md);
}

.project-content h3 {
    margin-bottom: var(--space-md);

    font-size: 1.4rem;
}

.project-content p {
    margin-bottom: var(--space-md);

    font-size: 0.95rem;

    color: var(--text-secondary);

    /* overflow-wrap: break-word; */
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);

    margin-bottom: var(--space-md);
}

.tech-stack span {
    padding: 0.4rem 0.8rem;

    font-size: 0.8rem;
    font-weight: 500;

    color: var(--accent);
    background-color: rgba(75, 160, 255, 0.2);

    border: 1px solid rgba(75, 160, 255, 0.4);
    border-radius: var(--radius-sm);
}

.project-links {
    display: flex;
    gap: var(--space-sm);

    display: none;
}

#experience {
    position: relative;

    padding: var(--space-xl) 0;
}

#experience::before {
    content: "";

    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;

    background-color: var(--background-secondary);

    z-index: -1;
}

.timeline {
    position: relative;

    margin-bottom: var(--space-xl);

    left: 50%;
    max-width: 800px;

    transform: translateX(-50%);
}

.timeline::before {
    content: "";

    position: absolute;
    top: 0;
    bottom: 0;
    left: 10px;
    width: 4px;

    background-color: var(--accent);

    border-radius: 50px;

    opacity: 0.4;

    transform: translateX(-50%);

    transition: background-color var(--transition-normal);
}

.timeline-item {
    position: relative;

    margin-bottom: var(--space-lg);
    padding-left: 40px;

    opacity: 0;

    transform: translateX(-20px);
}

.timeline-item.animate-in {
    animation: fadeInRight 0.6s forwards;
}

.timeline-item.animate-out {
    animation: fadeOutLeft 0.6s forwards;
}

.timeline-dot {
    position: absolute;

    left: 0;
    top: 5px;
    width: 20px;
    height: 20px;

    background-color: var(--accent);

    border: 4px solid var(--background-secondary);
    border-radius: 50%;

    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.timeline-content {
    padding: var(--space-md);

    background-color: var(--card-background);

    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);

    box-shadow: 0 2px 4px var(--shadow);

    transition: background-color var(--transition-normal);
}

.timeline-content h3 {
    margin-bottom: var(--space-xs);

    font-size: 1.4rem;
}

.timeline-content h4 {
    margin-bottom: var(--space-xs);

    font-size: 1.1rem;
    font-weight: 500;

    color: var(--accent);

    transition: color var(--transition-normal);
}

.timeline-date {
    margin-bottom: var(--space-sm);

    font-size: 0.9rem;
    font-style: italic;

    color: var(--text-secondary);

    transition: color var(--transition-normal);
}

.education {
    margin: 0 auto;

    max-width: 800px;
}

.education h3 {
    margin-bottom: var(--space-md);

    font-size: 1.8rem;

    text-align: center;
}

.education-item {
    margin-bottom: var(--space-md);
    padding: var(--space-md);

    background-color: var(--card-background);

    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);

    box-shadow: 0 2px 4px var(--shadow);

    opacity: 0;

    transform: translate(20px);
}

.education-item.animate-in {
    animation: fadeInUp 0.6s forwards;
}

.education-item.animate-out {
    animation: fadeOutDown 0.6s forwards;
}

.education-item h4 {
    margin-bottom: var(--space-xs);

    font-size: 1.2rem;
}

.education-item h5 {
    margin-bottom: var(--space-xs);

    color: var(--text-secondary);
}

.education-item p {
    margin-bottom: var(--space-xs);

    font-size: 0.9rem;
    font-style: italic;

    color: var(--text-secondary);
}

#contact {
    padding: var(--space-xl) 0;
}

.contact-content {
    display: flex;
    gap: var(--space-xl);
}

.contact-info {
    flex: 1;

    padding: var(--space-md);

    background-color: var(--card-background);

    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);

    box-shadow: 0 4px 8px var(--shadow);

    opacity: 0;
}

.contact-info.animate-in {
    animation: fadeInRight 0.6s forwards;
}

.contact-info.animate-out {
    animation: fadeOutLeft 0.6s forwards;
}

.contact-item {
    display: flex;
    align-items: center;

    margin-bottom: var(--space-md);
}

.contact-item i {
    width: 40px;

    font-size: 1.5rem;

    color: var(--accent);
}

.contact-item p {
    color: var(--text-secondary);
}

.social-links {
    display: flex;
    gap: var(--space-md);

    margin-top: var(--space-lg);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;

    width: 50px;
    height: 50px;

    font-size: 1.5rem;

    color: var(--accent);

    background-color: var(--background-secondary);

    border: 1px solid var(--glass-border);
    border-radius: 50%;

    transition: color var(--transition-fast), background-color var(--transition-fast), transform var(--transition-fast);
}

.social-link:hover {
    color: white;

    background-color: var(--accent);

    transform: translateY(-5px);
}

.contact-form {
    flex: 1;

    padding: var(--space-md);

    background-color: var(--card-background);

    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);

    box-shadow: 0 4px 8px var(--shadow);

    opacity: 0;
}

.contact-form.animate-in {
    animation: fadeInLeft 0.6s forwards;
}

.contact-form.animate-out {
    animation: fadeOutRight 0.6s forwards;
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-group label {
    display: block;

    margin-bottom: var(--space-xs);

    font-weight: 500;
}

.form-group input,
.form-group textarea {
    padding: 0.8rem 1rem;

    width: 100%;

    color: var(--text-primary);

    background-color: rgba(0, 0, 0, 0.05);

    border: 1px solid var(--border);
    border-radius: var(--radius-md);

    resize: none;
    outline: none;

    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent);
}

footer {
    padding: var(--space-lg) 0;

    background-color: var(--background-secondary);

    border-top: 1px solid var(--glass-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer-content p {
    color: var(--text-secondary);
}

.footer-links {
    display: flex;
    gap: var(--space-md);
}

.footer-links a {
    font-size: 0.9rem;

    color: var(--text-secondary);
}

@keyframes fadeBackgroundGradient {
    0% {
        --fadeBackgroundGradientValue: 30%;
    }

    100% {
        --fadeBackgroundGradientValue: 40%;
    }
}


@keyframes typewriter-fadeIn {
    from {
        opacity: 0;
    }

    50% {
        padding-left: 2px;

        color: var(--accent);
        text-shadow: 0 10px 2px var(--accent);
    }

    to {
        opacity: 1;
    }
}

@keyframes typewriter-blink {
    0% {
        border-color: var(--accent);
    }

    50% {
        border-color: transparent;
    }

    100% {
        border-color: var(--accent);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;

        transform: translateY(20px);
    }

    to {
        opacity: 1;

        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;

        transform: translateX(20px);
    }

    to {
        opacity: 1;

        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;

        transform: translateX(-20px);
    }

    to {
        opacity: 1;

        transform: translateX(0);
    }
}

@keyframes fadeOutDown {
    from {
        opacity: 1;

        transform: translateY(0);
    }

    to {
        opacity: 0;

        transform: translateY(20px);
    }
}

@keyframes fadeOutLeft {
    from {
        opacity: 1;

        transform: translateX(0);
    }

    to {
        opacity: 0;

        transform: translateX(-20px);
    }
}

@keyframes fadeOutRight {
    from {
        opacity: 1;

        transform: translateX(0);
    }

    to {
        opacity: 0;

        transform: translateX(20px);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.4);
    }

    100% {
        transform: scale(1);
    }
}