/* 
====================================================================
   ROOT VARIABLES & THEME SETUP
====================================================================
*/
:root {
    /* Dark Mode (Default) */
    --bg-color: #0a192f;
    --card-bg: #112240;
    --text-primary: #ccd6f6;
    --text-secondary: #8892b0;
    --accent-color: #64ffda;
    --accent-hover: #4cd4b0;
    --nav-bg: rgba(10, 25, 47, 0.85);

    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'Fira Code', monospace;

    --transition: all 0.25s cubic-bezier(0.645, 0.045, 0.355, 1);
    --shadow-main: 0 10px 30px -10px rgba(2, 12, 27, 0.7);
    --shadow-hover: 0 20px 30px -15px rgba(2, 12, 27, 0.7);

    --border-radius: 4px;
    --nav-height: 100px;
    --nav-scroll-height: 70px;
}

/* Light Mode Overrides */
body.light-mode {
    --bg-color: #ffffff;
    --card-bg: #f7f9fc;
    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    --accent-color: #2563eb;
    /* Royal Blue */
    --accent-hover: #1d4ed8;
    --nav-bg: rgba(255, 255, 255, 0.85);
    --shadow-main: 0 10px 30px -10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 20px 30px -15px rgba(0, 0, 0, 0.15);
}

/* 
====================================================================
   RESET & BASE STYLES
====================================================================
*/
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

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

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

ul {
    list-style: none;
}

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

::selection {
    background-color: var(--accent-color);
    color: var(--bg-color);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background-color: var(--text-secondary);
    border: 3px solid var(--bg-color);
    border-radius: 10px;
}

/* 
====================================================================
   UTILITIES & ANIMATIONS
====================================================================
*/
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 100px 0;
}

.section-title {
    font-size: clamp(26px, 5vw, 32px);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 40px;
    display: flex;
    align-items: center;
}

.section-title::after {
    content: "";
    display: block;
    width: 300px;
    height: 1px;
    background-color: var(--text-secondary);
    margin-left: 20px;
    opacity: 0.3;
}

@media (max-width: 768px) {
    .section-title::after {
        width: 100%;
    }
}

.section-number {
    font-family: var(--font-mono);
    color: var(--accent-color);
    font-size: 20px;
    font-weight: 400;
    margin-right: 10px;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    font-family: var(--font-mono);
    font-size: 14px;
    cursor: pointer;
    text-align: center;
    transition: var(--transition);
}

.btn-primary {
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
    background: transparent;
}

.btn-primary:hover {
    background: rgba(100, 255, 218, 0.1);
}

body.light-mode .btn-primary:hover {
    background: rgba(37, 99, 235, 0.1);
}

.btn-secondary {
    color: var(--text-primary);
    border: 1px solid var(--text-primary);
    margin-left: 15px;
}

.btn-secondary:hover {
    background: var(--text-primary);
    color: var(--bg-color);
}

/* Fade In Animation Classes */
.hidden {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.show {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 {
    transition-delay: 0.1s;
}

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

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

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

/* 
====================================================================
   NAVIGATION
====================================================================
*/
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background-color: var(--nav-bg);
    backdrop-filter: blur(10px);
    z-index: 1000;
    display: flex;
    align-items: center;
    transition: var(--transition), height 0.3s ease;
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0);
    /* Hidden by default */
}

.navbar.scrolled {
    height: var(--nav-scroll-height);
    box-shadow: var(--shadow-main);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 1300px;
    /* Slightly wider nav */
    margin: 0 auto;
    padding: 0 40px;
}

.logo {
    font-family: var(--font-mono);
    font-size: 24px;
    font-weight: 700;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
    padding: 5px 10px;
    border-radius: 5px;
}

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

.nav-links a {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text-secondary);
}

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



#theme-toggle {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 20px;
    cursor: pointer;
    margin-left: 20px;
    transition: var(--transition);
}

#theme-toggle:hover {
    color: var(--accent-color);
}

.mobile-menu-toggle {
    display: none;
    font-size: 30px;
    color: var(--accent-color);
    cursor: pointer;
    transition: var(--transition);
}

.mobile-menu-toggle:hover {
    transform: scale(1.1);
}

.mobile-menu-toggle:active {
    transform: scale(0.95);
}

/* Mobile Menu Backdrop */
.mobile-menu-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
}

.mobile-menu-backdrop.active {
    opacity: 1;
    visibility: visible;
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 75%;
    max-width: 400px;
    height: 100vh;
    background-color: var(--card-bg);
    z-index: 1001;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 30px;
    transform: translateX(100%);
    transition: transform 0.3s ease-in-out;
    box-shadow: -10px 0px 30px -15px rgba(2, 12, 27, 0.7);
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-menu-close {
    position: absolute;
    top: 30px;
    right: 30px;
    font-size: 30px;
    color: var(--accent-color);
    cursor: pointer;
}

.mobile-link {
    font-family: var(--font-mono);
    font-size: 18px;
    color: var(--text-primary);
}

.mobile-link:hover {
    color: var(--accent-color);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

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

/* 
====================================================================
   HERO SECTION
====================================================================
*/
.hero-section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding-top: 0;
    /* Centered vertically */
}

.hero-greeting {
    font-family: var(--font-mono);
    color: var(--accent-color);
    font-size: 16px;
    margin-bottom: 20px;
}

.hero-name {
    font-size: clamp(40px, 8vw, 80px);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.1;
}

.hero-title {
    font-size: clamp(40px, 8vw, 80px);
    font-weight: 700;
    color: var(--text-secondary);
    line-height: 1.1;
    margin-bottom: 20px;
}

.hero-description {
    max-width: 540px;
    margin-bottom: 50px;
    color: var(--text-secondary);
    font-size: 18px;
    line-height: 1.6;
    text-wrap: balance;
}

/* 
====================================================================
   ABOUT SECTION
====================================================================
*/
.about-content {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 50px;
    align-items: start;
}

.about-text p {
    margin-bottom: 15px;
    color: var(--text-secondary);
}

.about-text a {
    color: var(--accent-color);
    position: relative;
    display: inline-block;
}

.about-text a::after {
    content: '';
    display: block;
    width: 0;
    height: 1px;
    background: var(--accent-color);
    transition: width 0.3s;
}

.about-text a:hover::after {
    width: 100%;
}



@media (max-width: 768px) {
    .about-content {
        grid-template-columns: 1fr;
    }

    
}

/* 
====================================================================
   SKILLS SECTION
====================================================================
*/
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.skill-category h3 {
    font-size: 20px;
    color: var(--text-primary);
    margin-bottom: 20px;
    border-bottom: 1px solid var(--text-secondary);
    padding-bottom: 10px;
    display: inline-block;
}

.skill-list li {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.skill-list li i {
    color: var(--accent-color);
}

/* 
====================================================================
   PROJECTS SECTION
====================================================================
*/
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.project-card {
    background-color: var(--card-bg);
    padding: 2rem 1.75rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-7px);
    box-shadow: var(--shadow-hover);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.folder-icon {
    color: var(--accent-color);
    font-size: 40px;
}

.project-links a {
    color: var(--text-secondary);
    font-size: 20px;
    margin-left: 10px;
}

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

.project-title {
    color: var(--text-primary);
    font-size: 22px;
    margin-bottom: 10px;
}

.project-description {
    color: var(--text-secondary);
    font-size: 15px;
    flex-grow: 1;
    margin-bottom: 20px;
}

.project-tech-list {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 20px;
}

.project-tech-list li {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-secondary);
}

.view-more-container {
    text-align: center;
    margin-top: 50px;
}

/* 
====================================================================
   EXPERIENCE SECTION (Horizontal Tabs turned vertical on desktop)
====================================================================
*/
.experience-tabs {
    display: flex;
    gap: 50px;
    max-width: 800px;
    margin: 0 auto;
}

.tabs-list {
    display: flex;
    flex-direction: column;
    width: max-content;
    border-left: 2px solid var(--card-bg);
}

.tab-button {
    background: transparent;
    border: none;
    text-align: left;
    padding: 15px 20px;
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
    border-left: 2px solid transparent;
    margin-left: -2px;
    transition: var(--transition);
}

.tab-button:hover,
.tab-button.active {
    background-color: var(--card-bg);
    color: var(--accent-color);
}

.tab-button.active {
    border-left-color: var(--accent-color);
}

.tabs-content {
    flex-grow: 1;
}

.tab-pane {
    display: none;
    animation: fadeIn 0.5s ease;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.job-title {
    font-size: 22px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 5px;
}

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

.job-range {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.job-description li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 10px;
    color: var(--text-secondary);
    font-size: 16px;
}

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

@media (max-width: 768px) {
    .experience-tabs {
        flex-direction: column;
    }

    .tabs-list {
        flex-direction: row;
        border-left: none;
        border-bottom: 2px solid var(--card-bg);
        overflow-x: auto;
        width: 100%;
    }

    .tab-button {
        border-left: none;
        border-bottom: 2px solid transparent;
        margin-left: 0;
        margin-bottom: -2px;
        min-width: 120px;
    }

    .tab-button.active {
        border-bottom-color: var(--accent-color);
    }
}

/* 
====================================================================
   SERVICES SECTION
====================================================================
*/
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.service-icon {
    font-size: 42px;
    color: var(--accent-color);
    margin-bottom: 24px;
    display: block;
}

.service-card h3 {
    color: var(--text-primary);
    margin-bottom: 15px;
}

.service-card p {
    color: var(--text-secondary);
}


/* 
====================================================================
   CAREER OBJECTIVE SECTION
====================================================================
*/
.objective-box {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.objective-box h2 {
    font-size: 28px;
    color: var(--text-primary);
    margin-bottom: 30px;
}

.objective-box p {
    font-size: 20px;
    font-style: italic;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 
====================================================================
   CONTACT SECTION
====================================================================
*/
.contact-section {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 100px;
}

.contact-subtitle {
    font-family: var(--font-mono);
    color: var(--accent-color);
    margin-bottom: 20px;
}

.contact-title {
    font-size: clamp(40px, 5vw, 60px);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.contact-desc {
    color: var(--text-secondary);
    font-size: 18px;
    margin-bottom: 50px;
}

.btn-large {
    padding: 1.25rem 1.75rem;
    font-size: 14px;
}

.social-links {
    margin-top: 50px;
    display: flex;
    justify-content: center;
    gap: 30px;
}

.social-links a {
    font-size: 24px;
    color: var(--text-secondary);
}

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

/* Contact Form */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
    text-align: left;
    margin-bottom: 50px;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    background-color: var(--card-bg);
    border: 1px solid var(--card-bg);
    /* No visible border initially, matching bg */
    padding: 15px;
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 14px;
    transition: border-color var(--transition);
}

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

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}

.contact-form button {
    display: block;
    width: 100%;
    margin-top: 20px;
    background-color: transparent;
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
    padding: 15px;
    font-family: var(--font-mono);
    font-size: 14px;
    cursor: pointer;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

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

@media (max-width: 768px) {
    .form-group {
        flex-direction: column;
        gap: 15px;
    }
}

/* 
====================================================================
   FOOTER
====================================================================
*/
footer {
    padding: 20px;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-secondary);
    border-top: 1px solid rgba(136, 146, 176, 0.1);
}

footer p {
    margin-bottom: 5px;
}