:root {
    --navy: #0a192f;
    --light-navy: #112240;
    --lightest-navy: #233554;
    --slate: #8892b0;
    --light-slate: #a8b2d1;
    --lightest-slate: #ccd6f6;
    --white: #e6f1ff;
    --green: #64ffda;
    --font-sans: 'Inter', 'San Francisco', 'SF Pro Text', -apple-system, system-ui, sans-serif;
    --font-mono: 'Roboto Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;
    --fz-xxs: 12px;
    --fz-xs: 13px;
    --fz-sm: 14px;
    --fz-md: 16px;
    --fz-lg: 18px;
    --fz-xl: 20px;
    --fz-xxl: 22px;
    --fz-heading: 32px;
    --border-radius: 4px;
    --nav-height: 100px;
    --nav-scroll-height: 70px;
    --tab-height: 42px;
    --tab-width: 120px;
    --transition: all 0.25s cubic-bezier(0.645, 0.045, 0.355, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--navy);
    color: var(--slate);
    font-family: var(--font-sans);
    font-size: var(--fz-md);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    transition: background-color 0.3s ease, color 0.3s ease; /* Smooth transition for theme change */
}

/* Light Theme */
body.light-theme {
    --navy: #f0f2f5; /* Light gray background */
    --light-navy: #ffffff; /* White for cards/sections */
    --lightest-navy: #e9ecef; /* Slightly darker white for accents */
    --slate: #333333; /* Dark gray text */
    --light-slate: #555555; /* Lighter dark gray text */
    --lightest-slate: #1a1a1a; /* Almost black for headings */
    --white: #0a192f; /* Dark navy for contrast elements if needed */
    --green: #007bff; /* A blue accent for light theme, or keep green */
    /* You might need to adjust other colors like box-shadows too */
}

/* Adjustments for light theme elements */
body.light-theme .noise {
    opacity: 0.01; /* Reduce noise opacity on light theme */
}

body.light-theme header {
    background-color: rgba(240, 242, 245, 0.85); /* Light header background */
}

body.light-theme header.scrolled {
    box-shadow: 0 10px 30px -10px rgba(100, 100, 100, 0.1); /* Lighter shadow */
}

body.light-theme .hero .intro {
    color: var(--green); /* Keep the accent color for intro in light mode */
}

body.light-theme .logo {
    border-color: var(--green);
    color: var(--green);
}

body.light-theme .nav-links a {
    color: var(--slate);
}

body.light-theme .nav-links a:hover,
body.light-theme .nav-links a span {
    color: var(--green);
}

body.light-theme .resume-button,
body.light-theme .theme-toggle-button {
    color: var(--green);
    border-color: var(--green);
}

body.light-theme .resume-button:hover,
body.light-theme .theme-toggle-button:hover {
    background-color: rgba(0, 123, 255, 0.1); /* Adjust hover for new accent */
}

body.light-theme .hamburger .line {
    background-color: var(--green);
}

body.light-theme .section-title::after {
    background-color: var(--lightest-navy);
}

body.light-theme .project-description {
    background-color: var(--light-navy);
    box-shadow: 0 10px 30px -15px rgba(100, 100, 100, 0.2);
}

body.light-theme .image-wrapper::before {
    background-color: var(--navy); /* This will be the light background */
}

body.light-theme .image-wrapper:hover::before {
    background-color: transparent;
}

body.light-theme .tab-button {
    border-left-color: var(--lightest-navy);
    color: var(--slate);
}
body.light-theme .tab-button.active {
    color: var(--green);
    border-left-color: var(--green);
}
body.light-theme .tab-button:hover {
     color: var(--green);
    background-color: rgba(0, 123, 255, 0.05);
}

@media (max-width: 768px) {
    /* ... existing media queries ... */
    body.light-theme .tab-button {
        border-bottom-color: var(--lightest-navy);
    }
    body.light-theme .tab-button.active {
        border-bottom-color: var(--green);
    }
}


body.light-theme .social-sidebar a,
body.light-theme .email-sidebar .email-link {
    color: var(--slate);
}

body.light-theme .social-sidebar a:hover,
body.light-theme .email-sidebar .email-link:hover {
    color: var(--green);
}

body.light-theme .sidebar-line {
    background-color: var(--light-slate);
}

body.light-theme .mobile-menu {
    background-color: var(--light-navy);
    box-shadow: -10px 0px 30px -15px rgba(100, 100, 100, 0.2);
}

body.light-theme .mobile-nav-links a {
    color: var(--slate);
}

body.light-theme .mobile-nav-links a span {
    color: var(--green);
}


/* Noise overlay effect */
.noise {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 250 250' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.03;
    pointer-events: none;
    z-index: 9999;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--lightest-slate);
    font-weight: 700;
    line-height: 1.1;
    margin: 0 0 20px 0;
}

p {
    margin: 0 0 15px 0;
}

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

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

ul {
    list-style: none;
}

.container {
    max-width: 1000px;
    margin: 0 20px;
    padding: 0 15px;
}

section {
    margin: 0 auto;
    padding: 100px 0;
    max-width: 1000px;
    scroll-margin-top: var(--nav-height); /* Add this line */
}

/* Header & Navigation */
header {
    position: fixed;
    top: 0;
    width: 100%;
    height: var(--nav-height);
    background-color: rgba(10, 25, 47, 0.85);
    backdrop-filter: blur(10px);
    z-index: 11;
    transition: var(--transition);
}

header.scrolled {
    height: var(--nav-scroll-height);
    box-shadow: 0 10px 30px -10px rgba(2, 12, 27, 0.7);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    width: 100%;
    height: 100%;
    padding: 0 50px;
}

.logo-link {
    text-decoration: none; /* Ensures no underline on the logo */
}

.logo {
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--green);
    font-family: var(--font-mono);
    font-size: 24px;
    font-weight: 700;
    width: 42px;
    height: 42px;
    border: 2px solid var(--green);
    border-radius: 50%;
}

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

.nav-links li {
    margin: 0 15px;
}

.nav-links a {
    color: var(--lightest-slate);
    font-family: var(--font-mono);
    font-size: var(--fz-sm);
    padding: 10px;
}

.nav-links a:hover {
    color: var(--green);
}

.nav-links a span {
    color: var(--green);
    margin-right: 5px;
    font-size: var(--fz-xs);
}

.resume-button {
    color: var(--green);
    background-color: transparent;
    border: 1px solid var(--green);
    border-radius: var(--border-radius);
    padding: 10px 16px;
    font-family: var(--font-mono);
    font-size: var(--fz-xs);
    line-height: 1;
    text-decoration: none;
    transition: var(--transition);
}

.resume-button:hover {
    background-color: rgba(100, 255, 218, 0.1);
}

.ios-toggle {
    position: relative;
    display: inline-block;
    width: 51px;
    height: 31px;
    margin-left: 15px;
}

.ios-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.ios-toggle .slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #e9e9ea;
    transition: .4s;
    border-radius: 34px;
}

.ios-toggle .slider:before {
    position: absolute;
    content: "";
    height: 27px;
    width: 27px;
    left: 2px;
    bottom: 2px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.ios-toggle input:checked + .slider {
    background-color: var(--green);
}

.ios-toggle input:checked + .slider:before {
    transform: translateX(20px);
}

/* Light theme styles for the toggle */
body.light-theme .ios-toggle .slider {
    background-color: #e9e9ea;
}

body.light-theme .ios-toggle input:checked + .slider {
    background-color: var(--green);
}

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
    z-index: 10;
}

.hamburger .line {
    width: 100%;
    height: 2px;
    background-color: var(--green);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    display: flex;
    justify-content: flex-start;
    align-items: flex-start;
    flex-direction: column;
    min-height: 100vh;
    padding: 0;
}

.hero .intro {
    color: var(--green);
    font-family: var(--font-mono);
    font-size: var(--fz-md);
    margin: 0 0 20px 4px;
}

.hero .name {
    color: var(--lightest-slate);
    font-size: clamp(40px, 8vw, 60px);
    font-weight: 715;
    margin: 0;
}

.hero .tagline {
    color: var(--slate);
    font-size: clamp(40px, 8vw, 60px);
    font-weight: 500;
    line-height: 0.9;
    margin: 10px 0 30px;
}

.hero .description {
    color: var(--slate);
    max-width: 540px;
    margin-bottom: 30px;
}

.cta-button {
    color: var(--green);
    background-color: transparent;
    border: 1px solid var(--green);
    border-radius: var(--border-radius);
    padding: 20px 28px;
    font-family: var(--font-mono);
    font-size: var(--fz-sm);
    line-height: 1;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 50px;
    display: inline-block;
}

.cta-button:hover {
    background-color: rgba(100, 255, 218, 0.1);
}

/* Section Titles */
.section-title {
    display: flex;
    align-items: center;
    position: relative;
    margin: 10px 0 40px;
    width: 100%;
    font-size: clamp(26px, 5vw, var(--fz-heading));
    white-space: nowrap;
}

.section-title span {
    color: var(--green);
    font-family: var(--font-mono);
    font-size: clamp(var(--fz-md), 3vw, var(--fz-xl));
    font-weight: 400;
    margin-right: 10px;
}

.section-title::after {
    content: '';
    display: block;
    position: relative;
    width: 300px;
    height: 1px;
    margin-left: 20px;
    background-color: var(--lightest-navy);
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 50px;
}

.about-text p {
    margin-bottom: 15px;
}

.skills-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(140px, 200px));
    gap: 0 10px;
    padding: 0;
    margin: 20px 0 0 0;
    overflow: hidden;
}

.skills-list li {
    position: relative;
    margin-bottom: 10px;
    padding-left: 20px;
    font-family: var(--font-mono);
    font-size: var(--fz-xs);
}

.skills-list li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--green);
    font-size: var(--fz-sm);
    line-height: 12px;
}

.about-image {
    position: relative;
    max-width: 300px;
}

.image-wrapper {
    position: relative;
    border-radius: var(--border-radius);
    background-color: var(--green);
    transition: var(--transition);
}

.image-wrapper::before {
    content: '';
    display: block;
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: var(--border-radius);
    transition: var(--transition);
    background-color: var(--navy);
    mix-blend-mode: screen;
}

.image-wrapper img {
    max-width: 100%;
    border-radius: var(--border-radius);
    mix-blend-mode: multiply;
    filter: grayscale(100%) contrast(1);
    transition: var(--transition);
}

.image-wrapper:hover::before {
    background-color: transparent;
}

.image-wrapper:hover img {
    filter: none;
    mix-blend-mode: normal;
}

/* Experience Section */
.experience-content {
    display: flex;
    min-height: 340px;
}

.tabs {
    display: flex;
    flex-direction: column;
    position: relative;
    width: var(--tab-width);
    height: var(--tab-height);
    margin-right: 25px;
}

.tab-button {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    width: 100%;
    height: var(--tab-height);
    padding: 0 20px;
    border: none;
    border-left: 2px solid var(--lightest-navy);
    background-color: transparent;
    color: var(--slate);
    font-family: var(--font-mono);
    font-size: var(--fz-xs);
    text-align: left;
    white-space: nowrap;
    cursor: pointer;
    transition: var(--transition);
}

.tab-button:hover {
    color: var(--green);
    background-color: rgba(100, 255, 218, 0.1);
}

.tab-button.active {
    color: var(--green);
    border-left: 2px solid var(--green);
}

.tab-content {
    position: relative;
    width: 100%;
    height: auto;
    padding-top: 10px;
    margin-top: 50px; /* Add margin to push content below horizontal tabs */
}

.tab-panel {
    width: 100%;
    height: auto;
    padding: 10px 5px;
    display: none;
}

.tab-panel.active {
    display: block;
}

.tab-panel h3 {
    margin-bottom: 5px;
    font-size: var(--fz-xxl);
    font-weight: 500;
    line-height: 1.3;
}

.company {
    color: var(--green);
}

.job-duration {
    margin-bottom: 25px;
    color: var(--light-slate);
    font-family: var(--font-mono);
    font-size: var(--fz-xs);
}

.job-description {
    padding: 0;
    margin: 0;
    list-style: none;
}

.job-description li {
    position: relative;
    padding-left: 30px;
    margin-bottom: 10px;
}

.job-description li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--green);
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 10px;
}

/* Services section specific styling for smaller margins */
#services .container {
    margin: 0 10px;
    padding: 0 10px;
}

@media (max-width: 768px) {
    #services .container {
        margin: 0 5px;
        padding: 0 5px;
    }
}

@media (max-width: 480px) {
    #services .container {
        margin: 0 5px;
        padding: 0 5px;
    }
}

.project-card {
    position: relative;
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    align-items: center;
    margin-bottom: 100px;
}

.project-content {
    position: relative;
    grid-column: 1 / -1;
    z-index: 2;
    padding: 30px 25px 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.project-content .service-image {
    width: 100%;
    max-width: 500px;
    height: auto;
    border-radius: var(--border-radius);
    margin: 15px 0;
    transition: var(--transition);
}

.project-content .service-image:hover {
    transform: scale(1.03);
}

.project-card.reverse .project-content {
    text-align: right;
    align-items: flex-end;
}

.project-overline {
    margin: 10px 0;
    color: var(--green);
    font-family: var(--font-mono);
    font-size: var(--fz-xs);
    font-weight: 400;
}

.project-title {
    color: var(--lightest-slate);
    font-size: clamp(24px, 5vw, 28px);
    margin-bottom: 20px;
}

.project-description {
    position: relative;
    z-index: 2;
    padding: 20px;
    border-radius: var(--border-radius);
    background-color: var(--light-navy);
    color: var(--light-slate);
    font-size: var(--fz-md);
    box-shadow: 0 10px 30px -15px rgba(2, 12, 27, 0.7);
}

.project-tech-list {
    display: flex;
    flex-wrap: wrap;
    position: relative;
    z-index: 2;
    margin: 25px 0 10px;
    padding: 0;
    list-style: none;
}

.project-card.reverse .project-tech-list {
    justify-content: flex-end;
}

.project-tech-list li {
    margin: 0 20px 5px 0;
    color: var(--light-slate);
    font-family: var(--font-mono);
    font-size: var(--fz-xs);
    white-space: nowrap;
}

.project-card.reverse .project-tech-list li {
    margin: 0 0 5px 20px;
}

.project-links {
    display: flex;
    align-items: center;
    position: relative;
    margin-top: 10px;
    color: var(--lightest-slate);
}

.project-card.reverse .project-links {
    justify-content: flex-end;
}

.project-links a {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 10px;
    color: var(--lightest-slate);
}

.project-links a:hover {
    color: var(--green);
}

/* Contact Section */
.contact {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact-title {
    font-size: clamp(40px, 5vw, 60px);
    margin-bottom: 20px;
}

.contact-description {
    color: var(--slate);
    margin-bottom: 50px;
}

/* Footer */
footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 15px;
    text-align: center;
    height: auto;
    min-height: 70px;
}

.social-links {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 10px;
}

.social-links a {
    padding: 10px;
    color: var(--light-slate);
    font-size: var(--fz-md);
}

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

.footer-text {
    color: var(--light-slate);
    font-family: var(--font-mono);
    font-size: var(--fz-xs);
    line-height: 1.5;
}

/* Enhanced Responsive Design */
/* Large screens */
@media (max-width: 1400px) {
    .container {
        padding: 0 50px;
    }
    
    .social-sidebar {
        left: 30px;
    }
    
    .email-sidebar {
        right: 30px;
    }
}

@media (max-width: 1200px) {
    .container {
        padding: 0 40px;
    }
    
    nav {
        padding: 0 40px;
    }
    
    .about-content {
        gap: 40px;
    }
    
    .project-card {
        margin-bottom: 80px;
    }
    
    .social-sidebar {
        left: 25px;
    }
    
    .email-sidebar {
        right: 25px;
    }
}

@media (max-width: 1080px) {
    .container {
        padding: 0 30px;
    }
    
    nav {
        padding: 0 30px;
    }
    
    .hero .name {
        font-size: clamp(36px, 7vw, 56px);
    }
    
    .hero .tagline {
        font-size: clamp(32px, 6vw, 52px);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .about-image {
        max-width: 280px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 30px;
    }
    
    section {
        padding: 80px 0;
    }
    
    .nav-links {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero .name {
        font-size: clamp(40px, 8vw, 60px);
    }
    
    .hero .tagline {
        font-size: clamp(30px, 6vw, 50px);
    }
    
    .about-content {
        display: block;
    }
    
    .about-image {
        margin: 50px auto 0;
        width: 70%;
    }
    
    .experience-content {
        display: block;
    }
    
    .tabs {
        display: flex;
        flex-direction: row;
        overflow-x: auto;
        width: 100%;
        margin-bottom: 30px;
    }
    
    .tab-button {
        flex-shrink: 0;
        width: auto;
        padding: 0 20px;
        height: var(--tab-height);
        border-left: 0;
        border-bottom: 2px solid var(--lightest-navy);
    }
    
    .tab-button.active {
        border-left: 0;
        border-bottom: 2px solid var(--green);
    }
    
    .tab-content {
        margin-top: 50px; /* Add margin to push content below horizontal tabs */
    }
      .project-content {
        grid-column: 1 / -1;
        padding: 25px 15px 20px;
        text-align: left;
        align-items: flex-start;
    }

    .project-card.reverse .project-content {
        grid-column: 1 / -1;
        text-align: left;
        align-items: flex-start;
    }

    .project-content .service-image {
        max-width: 100%;
        margin: 10px 0;
    }

    .project-card {
        display: flex;
        flex-direction: column;
        margin-bottom: 70px; /* Reduced margin for better mobile spacing */
    }

    .projects-grid {
        display: flex;
        flex-direction: column;
        gap: 0;
    }

    .project-description {
        padding: 20px;
        margin-bottom: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .section-title::after {
        width: 100px;
    }
    
    .hero .intro {
        font-size: var(--fz-sm);
    }
    
    .hero .name {
        font-size: clamp(35px, 8vw, 50px);
    }
    
    .hero .tagline {
        font-size: clamp(25px, 5vw, 40px);
    }
    
    .hero .description {
        font-size: var(--fz-md);
    }
    
    .about-image {
        width: 80%;
    }
    
    .tab-button {
        padding: 0 15px;
    }
      .project-content {
        padding: 20px 10px 15px;
    }
    
    .project-description {
        padding: 20px;
    }
    
    .project-title {
        font-size: 24px;
    }
    
    .contact-title {
        font-size: clamp(30px, 8vw, 40px);
    }
}

/* Mobile Navigation Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 75vw;
    height: 100vh;
    outline: 0;
    background-color: var(--light-navy);
    box-shadow: -10px 0px 30px -15px rgba(2, 12, 27, 0.7);
    z-index: 9;
    transform: translateX(100%);
    visibility: hidden;
    transition: var(--transition);
    display: flex;
    justify-content: center;
    align-items: center;
}

.mobile-menu.open {
    transform: translateX(0);
    visibility: visible;
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    padding: 0;
    margin: 0;
}

.mobile-nav-links li {
    margin: 15px 0;
    position: relative;
    counter-increment: item 1;
    font-size: var(--fz-lg);
    width: 100%;
    text-align: center;
}

.mobile-nav-links a {
    display: inline-block;
    padding: 10px;
    width: 100%;
    color: var(--lightest-slate);
    font-family: var(--font-mono);
}

.mobile-nav-links a span {
    color: var(--green);
    margin-right: 5px;
    font-size: var(--fz-sm);
}

.mobile-resume-button {
    margin-top: 20px;
    padding: 15px 20px;
    font-size: var(--fz-sm);
}

/* Hamburger Animation */
.hamburger.active .line:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

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

.hamburger.active .line:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* Overlay for Mobile Menu */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(10, 25, 47, 0.7);
    z-index: 8;
    visibility: hidden;
    opacity: 0;
    transition: var(--transition);
}

.overlay.open {
    visibility: visible;
    opacity: 1;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

.fade-in-up {
    animation: fadeInUp 0.5s ease forwards;
}

/* Animation Delays */
.delay-1 {
    animation-delay: 0.1s;
}

.delay-2 {
    animation-delay: 0.2s;
}

.delay-3 {
    animation-delay: 0.3s;
}

.delay-4 {
    animation-delay: 0.4s;
}

.delay-5 {
    animation-delay: 0.5s;
}

main {
    padding-top: var(--nav-height);
}

.hero {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    flex-direction: column;
    min-height: 100vh;
    padding: 0;
}