/* Variables */
:root {
    --color-background: #0A0A0A;
    --color-text-primary: #E6E6E6;
    --color-text-secondary: #8892B0;
    --color-accent: #00FFFF;
    --color-accent-rgb: 0, 255, 255;
    --color-card-bg: #111111;
    --color-border: #232323;

    --font-sans: 'Open Sans', sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', monospace;
    --font-size-xl: 3rem;
    --font-size-lg: 2rem;
    --font-size-md: 1.25rem;
    --font-size-sm: 1rem;
    --font-size-xs: 0.875rem;

    --spacing-unit: 1rem;
    --section-padding: 6rem 0;
}

/* General */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--color-background);
    color: var(--color-text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    min-height: 100vh;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--color-text-primary);
    font-family: var(--font-sans);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-unit);
}

h1 { font-size: var(--font-size-xl); }
h2 { font-size: var(--font-size-lg); }
h3 { font-size: var(--font-size-md); }

p {
    margin-bottom: var(--spacing-unit);
    color: var(--color-text-secondary);
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.3s ease, border-color 0.3s ease;
}

a:hover, a:focus {
    color: rgba(var(--color-accent-rgb), 0.8);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

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

.section-header {
    margin-bottom: 3rem;
    text-align: center;
}

.section-header h2 {
    font-size: var(--font-size-lg);
    position: relative;
    display: inline-block;
    margin-bottom: 0.5rem;
}

.section-header p {
    font-size: var(--font-size-md);
    color: var(--color-text-secondary);
}

.cta-button {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--color-accent);
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.cta-button:hover, .cta-button:focus {
    background-color: rgba(var(--color-accent-rgb), 0.1);
    box-shadow: 0 0 10px rgba(var(--color-accent-rgb), 0.5);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.icon {
    width: 1em;
    height: 1em;
    fill: currentColor;
    vertical-align: -0.125em;
    flex: none;
}

:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
}

:focus:not(:focus-visible) {
    outline: none;
}

:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background-color: rgba(10, 10, 10, 0.95); 
    backdrop-filter: blur(5px);
    border-bottom: 1px solid var(--color-border);
    height: 60px;
    display: flex;
    align-items: center;
}

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

.logo a {
    font-family: var(--font-mono);
    font-size: var(--font-size-md);
    color: var(--color-accent);
    letter-spacing: 2px;
}

.nav-menu ul {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
}

.nav-menu ul li {
    margin-left: 2rem;
}

.nav-menu a {
    color: var(--color-text-primary);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    padding: 0.5rem 0;
    position: relative;
}

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

.nav-menu a::after {
    content: '';
    display: block;
    width: 0;
    height: 1px;
    background: var(--color-accent);
    transition: width 0.3s ease;
    position: absolute;
    bottom: 0;
    left: 0;
}

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

.social-nav a {
    font-size: 1.5rem;
    margin-left: 1rem;
    color: var(--color-text-secondary);
}

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

/* Mobile Menu */
#mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-accent);
    font-size: 1.5rem;
    cursor: pointer;
    transition: 0.3s;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 4px;
}

@media (max-width: 768px) {
    .header .container {
        gap: 1rem;
    }

    .header .logo {
        max-width: 60%;
        overflow: hidden;
        white-space: nowrap;
        text-overflow: ellipsis;
    }

    #mobile-nav-toggle {
        display: flex;
        z-index: 1000;
        position: relative;
        margin-left: auto;
    }

    body.mobile-nav-active #mobile-nav-toggle {
        border: 1px solid var(--color-accent);
    }

    .nav-menu {
        position: fixed;
        top: 60px; 
        right: -300px; 
        width: 250px;
        height: calc(100vh - 60px);
        overflow-y: auto;
        background-color: var(--color-card-bg);
        visibility: hidden;
        transition: right 0.3s ease, visibility 0s linear 0.3s;
        z-index: 90;
        padding: 2rem 0;
        border-left: 1px solid var(--color-border);
        display: block; 
    }

    .nav-menu ul {
        flex-direction: column;
    }

    .nav-menu ul li {
        margin: 0;
    }

    .nav-menu a {
        display: block;
        padding: 0.75rem 1.5rem;
        border-bottom: 1px solid var(--color-border);
    }

    .nav-menu a:hover::after {
        width: 0; 
    }

    .social-nav {
        display: none;
    }

    body.mobile-nav-active .nav-menu {
        right: 0;
        visibility: visible;
        transition: right 0.3s ease, visibility 0s linear 0s;
    }

    #mobile-body-overly {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.7);
        z-index: 80;
        display: none; 
    }
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 40px;
    height: 40px;
    background: rgba(var(--color-accent-rgb), 0.1);
    border: 1px solid var(--color-accent);
    color: var(--color-accent);
    text-align: center;
    line-height: 40px;
    border-radius: 50%;
    z-index: 99;
    display: none; 
    transition: background 0.3s ease;
}

.back-to-top:hover {
    background: rgba(var(--color-accent-rgb), 0.2);
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 60px; 
}

/* Credentials */
.credentials {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin: 0.5rem 0 1.75rem;
}

.credential-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    border: 1px solid rgba(var(--color-accent-rgb), 0.4);
    background-color: rgba(var(--color-accent-rgb), 0.07);
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    letter-spacing: 0.5px;
    color: var(--color-accent);
}

.credential-badge .icon {
    font-size: var(--font-size-sm);
}

/* About Content */
.about-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
}

@media (max-width: 992px) {
    .about-content {
        grid-template-columns: 1fr;
    }
}

.about-image {
    text-align: center;
}

.about-image img {
    width: 100%;
    height: auto;
    aspect-ratio: 1;
    object-fit: cover;
    max-width: 300px;
    border-radius: 50%;
    border: 2px solid var(--color-accent);
    box-shadow: 0 0 20px rgba(var(--color-accent-rgb), 0.2);
}

/* Skills */
.skills-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.5rem 1rem;
    margin-top: 1.5rem;
}

.skills-list li {
    position: relative;
    padding-left: 1.5rem;
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.skills-list li::before {
    content: '>';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

/* Experience */
.experience-item {
    background-color: var(--color-card-bg);
    padding: 2rem;
    margin-bottom: 2rem;
    border-left: 2px solid var(--color-accent);
    transition: background-color 0.3s ease;
}

.experience-item:hover {
    background-color: #181818;
}

.experience-item h3 {
    color: var(--color-accent);
    margin-bottom: 0.25rem;
}

.experience-item .role {
    font-size: var(--font-size-md);
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
}

.experience-item .duration {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    margin-bottom: 1rem;
}

.experience-item ul {
    list-style: none;
    padding-left: 1rem;
}

.experience-item li {
    position: relative;
    margin-bottom: 0.5rem;
    color: var(--color-text-secondary);
}

.experience-item li strong {
    color: var(--color-text-primary);
    font-weight: 700;
}

.experience-item li::before {
    content: '•';
    position: absolute;
    left: -1rem;
    color: var(--color-accent);
}

.experience-item .stack {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-accent);
    margin-top: 1rem;
    display: block;
}

/* Projects */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

a.project-card {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
}

.project-card {
    background-color: var(--color-card-bg);
    padding: 1.5rem;
    border: 1px solid var(--color-border);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px -15px rgba(var(--color-accent-rgb), 0.2);
}

.project-card h3 {
    color: var(--color-accent);
    font-size: var(--font-size-md);
    margin-bottom: 0.5rem;
}

.project-card.expandable {
    display: flex;
    flex-direction: column;
    cursor: pointer;
}

.project-card .stack {
    margin-bottom: 1rem;
}

.project-more {
    align-self: flex-start;
    margin-top: auto;
    padding: 0.4rem 0.9rem;
    background: transparent;
    border: 1px solid var(--color-accent);
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover .project-more,
.project-more:focus-visible {
    background-color: rgba(var(--color-accent-rgb), 0.1);
    box-shadow: 0 0 10px rgba(var(--color-accent-rgb), 0.5);
}

/* Project Modal */
.project-modal {
    position: fixed;
    inset: 0;
    margin: auto;
    width: min(760px, calc(100% - 2rem));
    max-height: 85vh;
    padding: 2rem;
    border: 1px solid var(--color-border);
    border-left: 2px solid var(--color-accent);
    background-color: var(--color-card-bg);
    color: var(--color-text-primary);
    overflow-y: auto;
}

.project-modal::backdrop {
    background-color: rgba(0, 0, 0, 0.8);
}

.project-modal h3 {
    color: var(--color-accent);
    font-size: var(--font-size-md);
    margin-bottom: 0.5rem;
    padding-right: 2.5rem;
}

.project-modal .stack {
    display: block;
    margin-top: 1rem;
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-accent);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 34px;
    height: 34px;
    line-height: 1;
    font-size: 1.5rem;
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: color 0.3s ease, border-color 0.3s ease;
}

.modal-close:hover, .modal-close:focus {
    color: var(--color-accent);
    border-color: var(--color-accent);
}

body.modal-open {
    overflow: hidden;
}

.project-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--color-accent);
    border: 1px solid rgba(var(--color-accent-rgb), 0.4);
    border-radius: 999px;
    padding: 0.2rem 0.7rem;
    margin-bottom: 0.75rem;
}

.project-detail {
    list-style: none;
    padding-left: 1rem;
    margin-bottom: 1rem;
}

.project-detail li {
    position: relative;
    margin-bottom: 0.5rem;
    color: var(--color-text-secondary);
}

.project-detail li::before {
    content: '\2022';
    position: absolute;
    left: -1rem;
    color: var(--color-accent);
}

.project-detail li strong {
    color: var(--color-text-primary);
    font-weight: 700;
}

/* Contact */
.contact-info {
    text-align: center;
}

.contact-info p {
    font-size: var(--font-size-md);
    margin-bottom: 0.5rem;
}

.contact-info a {
    font-family: var(--font-mono);
    font-size: var(--font-size-md);
}

.contact-socials {
    margin-top: 2rem;
}

.contact-socials a {
    font-size: 2rem;
    margin: 0 1rem;
    color: var(--color-text-secondary);
}

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

/* Footer */
.footer {
    padding: 3.5rem 0 1.5rem;
    border-top: 1px solid var(--color-border);
    margin-top: 4rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1.3fr;
    gap: 3rem;
    padding-bottom: 2.5rem;
}

.footer-logo {
    display: block;
    font-family: var(--font-mono);
    font-size: var(--font-size-md);
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--color-accent);
    margin-bottom: 0.75rem;
}

.footer-name {
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.footer-brand p:last-child {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    max-width: 38ch;
    margin-bottom: 0;
}

.footer h4 {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-accent);
    margin-bottom: 1.25rem;
}

.footer-col ul {
    list-style: none;
}

.footer-col li {
    margin-bottom: 0.6rem;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

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

.footer-col a:hover, .footer-col a:focus {
    color: var(--color-accent);
}

.footer-socials {
    margin-top: 1.5rem;
}

.footer-socials a {
    font-size: 1.35rem;
    margin-right: 1.25rem;
    color: var(--color-text-secondary);
}

.footer-socials a:hover, .footer-socials a:focus {
    color: var(--color-accent);
}

.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 0.5rem 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    margin-bottom: 0;
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2.25rem;
        padding-bottom: 2rem;
    }

    .footer-bottom {
        justify-content: center;
        text-align: center;
    }
}