/* General Styles */
:root {
    --background-color: #121212;
    --text-color: #e0e0e0;
    --card-background-color: #1f1f1f;
    --accent-color: #bb86fc;
    
    /* Spacing scale */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 40px;
    --spacing-xxl: 48px;
    
    /* Transition timings - promotes consistency and DRYness */
    --transition-fast: 0.3s ease;
    --transition-medium: 0.6s ease;
    --transition-slow: 1s ease;
    
    /* Theme icon colors */
    --sun-color: #ffd700;
    --moon-color: var(--text-color);
    
    /* Geometric background animation colors */
    --bg-animation-particle: rgba(187, 134, 252, 0.6);
    --bg-animation-line: rgba(187, 134, 252, 0.3);
}

/* ===== Accessibility Styles ===== */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--accent-color);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 1000;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 6px;
}

.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;
}

/* ===== Geometric Background Animation ===== */
#geometric-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    opacity: 1;
    transition: opacity var(--transition-fast);
}

/* Hide animation for users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
    #geometric-bg {
        display: none;
    }
}

/* ===== Initial Hidden States for Animations ===== */
.initial-hidden {
    opacity: 0;
}

.hero-content-hidden {
    opacity: 0 !important;
    transition: opacity var(--transition-slow);
}

.hero-content-hidden.show {
    opacity: 1 !important;
}

.card-hidden {
    opacity: 0;
}

/* ===== Theme Switcher ===== */
.theme-switcher .switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 30px;
}

.theme-switcher input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--card-background-color);
    border: 2px solid var(--text-color);
    transition: var(--transition-fast);
    border-radius: 30px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 3px;
    top: 3px;
    background-color: var(--text-color);
    transition: var(--transition-fast);
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}

input:checked + .slider:before {
    transform: translateX(28px);
    background-color: white;
}

.theme-icon {
    position: absolute;
    top: 50%;
    right: 8px;
    transform: translateY(-50%);
    pointer-events: none;
    z-index: 2;
    font-size: 12px;
    color: var(--moon-color);
    transition: all var(--transition-fast);
}

/* When toggled, move icon to left side and change to sun */
input:checked ~ .theme-icon {
    left: 8px;
    right: auto;
    color: var(--sun-color);
}

input:checked ~ .theme-icon i::before {
    content: "\f185"; /* FontAwesome sun icon unicode */
}

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

/* ===== Light Theme ===== */
body.light-theme {
    --background-color: #ffffff;
    --text-color: #000000;
    --card-background-color: #f0f0f0;
    --accent-color: #6200ee;
    
    /* Light theme animation colors */
    --bg-animation-particle: rgba(98, 0, 238, 0.5);
    --bg-animation-line: rgba(98, 0, 238, 0.25);
}

/* ===== Base Body Styles ===== */
body {
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

/* ===== Header ===== */
header {
    position: sticky;
    top: 0;
    width: 100%;
    background-color: var(--card-background-color);
    color: var(--text-color);
    padding: 15px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    transition: all var(--transition-fast);
    z-index: 100;
}

.logo {
    margin-left: 20px;
    transition: all var(--transition-fast);
}

.logo h1 {
    transition: all var(--transition-fast);
}

/* Compact header state when scrolled */
.header-scrolled {
    padding: 8px 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.header-scrolled .logo {
    margin-left: 15px;
}

.header-scrolled .logo h1 {
    font-size: 0.85em;
}

.header-scrolled nav ul li {
    margin: 0 10px;
}

.header-scrolled nav ul li a {
    padding: 6px 10px;
    font-size: 0.9em;
}

.header-scrolled .social-links {
    gap: 10px;
    margin-right: 12px;
}

.header-scrolled .social-links a {
    width: 30px;
    height: 30px;
    font-size: 1.1rem;
}

.header-scrolled .theme-switcher {
    margin-right: 15px;
}

.header-scrolled .theme-switcher .switch {
    width: 50px;
    height: 25px;
}

.header-scrolled .theme-switcher .slider {
    border-radius: 25px;
}

.header-scrolled .theme-switcher .slider:before {
    height: 17px;
    width: 17px;
    top: 2px;
    left: 2px;
    border-radius: 50%;
}

.header-scrolled .theme-switcher input:checked + .slider:before {
    transform: translateX(23px);
}

/* ===== Navigation ===== */
nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

nav ul li {
    margin: 0 15px;
    transition: all var(--transition-fast);
}

nav ul li a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: bold;
    padding: 8px 12px;
    border-radius: 6px;
    transition: all var(--transition-fast);
    position: relative;
}

nav ul li a:hover,
nav ul li a:focus {
    color: var(--accent-color);
    background-color: rgba(187, 134, 252, 0.1);
    outline: none;
}

nav ul li a:focus {
    box-shadow: 0 0 0 2px var(--accent-color);
}

/* ===== Social Media Links ===== */
.social-links {
    display: flex;
    gap: 12px;
    margin-right: 15px;
    align-items: center;
}

.social-links a {
    color: var(--text-color);
    font-size: 1.3rem;
    transition: color var(--transition-fast), 
                background-color var(--transition-fast), 
                transform var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 6px;
    text-decoration: none;
}

.social-links a:hover,
.social-links a:focus {
    color: var(--accent-color);
    background-color: rgba(187, 134, 252, 0.1);
    transform: translateY(-2px);
    outline: none;
}

.social-links a:focus {
    box-shadow: 0 0 0 2px var(--accent-color);
}

/* Hamburger Menu Styles */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    margin-left: auto;
    margin-right: 20px;
    z-index: 101;
    transition: all 0.3s ease;
}

.hamburger span {
    width: 100%;
    height: 3px;
    background-color: var(--text-color);
    border-radius: 3px;
    transition: all 0.3s ease;
}

.hamburger:hover span,
.hamburger:focus span {
    background-color: var(--accent-color);
}

.hamburger:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 4px;
}

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

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

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

.theme-switcher {
    margin-right: 20px;
    transition: all 0.3s ease;
}

.theme-switcher .switch {
    transition: all 0.3s ease;
}

main {
    width: 90%;
    max-width: 800px;
    margin: var(--spacing-xl) auto;
    padding: 0 var(--spacing-md);
}

.hero {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    min-height: 240px;
    position: relative;
    padding: 20px 0;
}

.animated-hero h1 {
    font-size: clamp(2rem, 5vw, 2.8rem);
    min-height: 1.5em;
    letter-spacing: 1px;
    color: var(--accent-color);
    margin-bottom: 0.5em;
    font-weight: 700;
}

.hero-name {
    font-size: clamp(1.5rem, 4vw, 2.2rem);
    color: var(--text-color);
    margin-bottom: 0.3em;
    font-weight: 600;
    opacity: 0.9;
}

.cursor {
    opacity: 1;
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.animated-hero h3 {
    font-size: clamp(1rem, 3vw, 1.2rem);
    font-weight: 400;
    margin: 1rem 0;
    opacity: 0.9;
}

.fade-in {
    opacity: 0;
    animation: fadeIn 1s ease forwards;
}

.fade-in-section {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-section.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
    .fade-in-section {
        transform: none;
        transition: opacity 0.3s ease;
    }
}

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

.hero-cta {
    display: inline-block;
    margin-top: 1.5em;
    padding: 0.75em 2em;
    background: var(--accent-color);
    color: #fff;
    border: none;
    border-radius: 25px;
    font-size: 1.1em;
    font-weight: bold;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    cursor: pointer;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s, transform 0.7s;
    text-decoration: none;
}

.hero-cta.visible {
    opacity: 1;
    transform: translateY(0);
}

.card {
    background-color: var(--card-background-color);
    color: var(--text-color);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    width: 100%;
    max-width: 800px;
    box-sizing: border-box;
    transition: all 0.3s ease;
}

.card--clickable {
    cursor: pointer;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

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

h1, h2, h3 {
    color: var(--accent-color);
}

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

a:hover {
    text-decoration: underline;
}

ul {
    list-style-type: none;
    padding: 0;
}

/* Two-column card grid */
.cards-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 20px;
}

.cards-grid .card {
    margin-bottom: 0; /* Remove individual card margins since grid handles spacing */
}

/* Responsive Design - Tablet and below */
@media (max-width: 768px) {
    /* Show hamburger menu on mobile */
    .hamburger {
        display: flex;
    }
    
    /* Ensure header items stay visible above the menu */
    header {
        position: relative;
        z-index: 100;
    }
    
    .logo,
    .theme-switcher {
        position: relative;
        z-index: 102;
    }
    
    /* Hide regular navigation, show as mobile menu */
    nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 0;
        background-color: var(--card-background-color);
        overflow: hidden;
        transition: height 0.3s ease;
        z-index: 99;
        padding-top: 60px;
    }
    
    nav.active {
        height: auto;
        min-height: 100vh;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    }
    
    nav ul {
        flex-direction: column;
        align-items: center;
        padding: var(--spacing-md) 0;
    }
    
    nav ul li {
        margin: var(--spacing-sm) 0;
        width: 100%;
        text-align: center;
    }
    
    nav ul li a {
        display: block;
        padding: var(--spacing-sm);
        font-size: 1.2rem;
        width: 80%;
        margin: 0 auto;
    }
    
    main {
        width: 95%;
        padding: 0 var(--spacing-sm);
        margin: var(--spacing-lg) auto;
    }
    
    .card {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }
    
    .hero {
        margin-bottom: var(--spacing-lg);
    }
    
    .logo {
        margin-left: var(--spacing-sm);
    }
    
    .theme-switcher {
        margin-right: var(--spacing-sm);
    }

    .cards-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .social-links {
        gap: 8px;
        margin-right: var(--spacing-xs);
    }
    
    .social-links a {
        width: 32px;
        height: 32px;
        font-size: 1.1rem;
    }
}

/* Responsive Design - Mobile */
@media (max-width: 480px) {
    main {
        width: 95%;
        padding: 0 var(--spacing-sm);
        margin: var(--spacing-md) auto;
    }
    
    .cards-grid {
        gap: var(--spacing-sm);
    }
    
    .card {
        padding: var(--spacing-sm);
        margin-bottom: var(--spacing-md);
    }
    
    header {
        padding: 12px 0;
    }
    
    .hero {
        margin-bottom: var(--spacing-md);
    }
    
    .animated-hero h1 {
        font-size: 2em;
    }
    
    .logo {
        margin-left: var(--spacing-xs);
    }
    
    .logo h1 {
        font-size: 1.2em;
    }
    
    nav ul {
        flex-wrap: nowrap;
    }
    
    nav ul li {
        margin: 0 var(--spacing-xs);
    }
    
    nav ul li a {
        font-size: 0.75em;
        white-space: nowrap;
    }
    
    .social-links {
        gap: 6px;
        margin-right: var(--spacing-xs);
    }
    
    .social-links a {
        width: 28px;
        height: 28px;
        font-size: 1rem;
    }
    
    .theme-switcher {
        margin-right: var(--spacing-xs);
    }
    
    /* Scrolled header adjustments for mobile */
    .header-scrolled {
        padding: 6px 0;
    }
    
    .header-scrolled .logo h1 {
        font-size: 1em;
    }
    
    .header-scrolled nav ul li {
        margin: 0 6px;
    }
    
    .header-scrolled nav ul li a {
        font-size: 0.7em;
        padding: 4px 6px;
    }
}

/* Responsive Design - Extra Small Mobile */
@media (max-width: 380px) {
    header {
        padding: 8px 0;
    }
    
    .logo {
        margin-left: 4px;
    }
    
    .logo h1 {
        font-size: 1em;
    }
    
    nav ul li {
        margin: 0 4px;
    }
    
    nav ul li a {
        font-size: 0.7em;
    }
    
    .theme-switcher {
        margin-right: 4px;
    }
    
    /* Scrolled header adjustments for extra small mobile */
    .header-scrolled {
        padding: 4px 0;
    }
    
    .header-scrolled .logo h1 {
        font-size: 0.85em;
    }
    
    .header-scrolled nav ul li {
        margin: 0 3px;
    }
    
    .header-scrolled nav ul li a {
        font-size: 0.65em;
        padding: 4px 6px;
    }
}

/* Projects Grid Layout */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 20px;
    width: 100%;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

/* Project Card Styles */
.project-card {
    background-color: var(--card-background-color);
    color: var(--text-color);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    padding: var(--spacing-md);
    box-sizing: border-box;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), #6200ee);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.project-card:hover::before {
    transform: scaleX(1);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

.project-card:focus-within {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

.project-card h3 {
    color: var(--accent-color);
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
    font-size: 1.4rem;
    font-weight: 600;
}

.project-description {
    flex-grow: 1;
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
    color: var(--text-color);
    opacity: 0.9;
}

/* Tech Stack Badges */
.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: var(--spacing-md);
}

.tech-badge {
    background-color: rgba(187, 134, 252, 0.15);
    color: var(--accent-color);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
}

.tech-badge:hover {
    background-color: rgba(187, 134, 252, 0.25);
    transform: scale(1.05);
}

.tech-badge i {
    font-size: 0.9em;
}

/* Project Links */
.project-links {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: auto;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 16px;
    background-color: var(--accent-color);
    color: #fff;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.project-link:hover {
    background-color: #6200ee;
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(187, 134, 252, 0.4);
    text-decoration: none;
}

.project-link i {
    font-size: 1em;
}

/* Case Study Toggle Button */
.case-study-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    margin: var(--spacing-md) 0;
    background-color: transparent;
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    justify-content: center;
}

.case-study-toggle:hover {
    background-color: rgba(187, 134, 252, 0.1);
    transform: translateY(-2px);
}

.case-study-toggle:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

.case-study-toggle[aria-expanded="true"] i {
    transform: rotate(180deg);
}

.case-study-toggle i {
    transition: transform 0.3s ease;
}

/* Case Study Content */
.case-study-content {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 2px solid rgba(187, 134, 252, 0.2);
    animation: slideDown 0.4s ease-out;
}

.case-study-content[hidden] {
    display: none;
}

@keyframes slideDown {
    from {
        opacity: 0;
        max-height: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        max-height: 5000px;
        transform: translateY(0);
    }
}

.case-study-section {
    margin-bottom: var(--spacing-lg);
}

.case-study-section:last-child {
    margin-bottom: var(--spacing-md);
}

.case-study-section h4 {
    color: var(--accent-color);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: 10px;
}

.case-study-section h4 i {
    font-size: 1em;
    opacity: 0.9;
}

.case-study-section p {
    line-height: 1.7;
    color: var(--text-color);
    opacity: 0.9;
    margin-bottom: var(--spacing-sm);
}

.case-study-section ul {
    list-style: none;
    padding-left: 0;
    margin: var(--spacing-sm) 0;
}

.case-study-section ul li {
    padding-left: 24px;
    margin-bottom: var(--spacing-sm);
    position: relative;
    line-height: 1.6;
    color: var(--text-color);
    opacity: 0.9;
}

.case-study-section ul li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.case-study-section ul li strong {
    color: var(--accent-color);
    font-weight: 600;
}


/* Responsive Design for Projects Grid */
@media (max-width: 1200px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
}

@media (max-width: 768px) {
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .project-card h3 {
        font-size: 1.3rem;
    }
    
    .tech-badge {
        font-size: 0.8rem;
        padding: 5px 10px;
    }
    
    .project-link {
        font-size: 0.85rem;
        padding: 8px 14px;
    }
    
    .case-study-toggle {
        font-size: 0.9rem;
        padding: 10px 16px;
    }
    
    .case-study-section h4 {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .projects-grid {
        gap: var(--spacing-sm);
    }
    
    .project-card {
        padding: var(--spacing-sm);
    }
    
    .project-card h3 {
        font-size: 1.2rem;
    }
    
    .tech-stack {
        gap: 6px;
    }
    
    .tech-badge {
        font-size: 0.75rem;
        padding: 4px 8px;
    }
    
    .project-links {
        gap: 8px;
    }
    
    .project-link {
        font-size: 0.8rem;
        padding: 8px 12px;
    }
}


/* Professional Timeline Styles */
.timeline {
    position: relative;
    margin: var(--spacing-lg) 0;
    padding: 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--accent-color);
}

.timeline-item {
    position: relative;
    padding-left: 70px;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-icon {
    position: absolute;
    left: 18px;
    top: 5px;
    width: 24px;
    height: 24px;
    background: var(--card-background-color);
    border: 2px solid var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-color);
    font-size: 0.8rem;
    z-index: 1;
}

.timeline-content {
    background: rgba(187, 134, 252, 0.05);
    border-left: 3px solid var(--accent-color);
    padding: var(--spacing-md);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.timeline-content:hover {
    background: rgba(187, 134, 252, 0.1);
    transform: translateX(5px);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    cursor: pointer;
    user-select: none;
}

.timeline-title {
    flex: 1;
}

.timeline-title h3 {
    margin: 0 0 var(--spacing-xs) 0;
    color: var(--accent-color);
    font-size: 1.3rem;
}

.timeline-company {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: var(--spacing-xs);
}

.timeline-duration {
    color: var(--text-color);
    opacity: 0.7;
    font-size: 0.9rem;
}

.timeline-toggle {
    font-size: 1.2rem;
    color: var(--accent-color);
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.timeline-toggle.expanded {
    transform: rotate(180deg);
}

.timeline-details {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.timeline-details.expanded {
    max-height: 1000px;
}

.timeline-details ul {
    list-style: none;
    padding: 0;
    margin: var(--spacing-md) 0 0 0;
}

.timeline-details li {
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    position: relative;
    line-height: 1.6;
}

.timeline-details li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.tech-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: var(--spacing-sm);
}

.tech-item {
    background-color: rgba(187, 134, 252, 0.15);
    color: var(--accent-color);
    padding: 4px 10px;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* Education and Certifications */
.education-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.education-item,
.certification-item {
    background: rgba(187, 134, 252, 0.05);
    border-left: 3px solid var(--accent-color);
    padding: var(--spacing-md);
    border-radius: 8px;
}

.education-item h3,
.certification-item h3 {
    margin: 0 0 var(--spacing-xs) 0;
    color: var(--accent-color);
    font-size: 1.2rem;
}

.education-institution,
.certification-issuer {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: var(--spacing-xs);
}

.education-date,
.certification-date {
    color: var(--text-color);
    opacity: 0.7;
    font-size: 0.9rem;
}

.education-details,
.certification-details {
    margin-top: var(--spacing-sm);
    line-height: 1.6;
}

/* Responsive Timeline */
@media (max-width: 768px) {
    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        padding-left: 55px;
    }

    .timeline-icon {
        left: 8px;
    }

    .timeline-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .timeline-title h3 {
        font-size: 1.1rem;
    }

    .timeline-content {
        padding: var(--spacing-sm);
    }
    
    .case-study-toggle {
        font-size: 0.85rem;
        padding: 10px 14px;
    }
    
    .case-study-section h4 {
        font-size: 0.95rem;
        gap: 8px;
    }
    
    .case-study-section p,
    .case-study-section ul li {
        font-size: 0.9rem;
    }
}

/* Skills Section Styles */
.skills-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
    justify-content: center;
}

.filter-btn {
    background-color: var(--card-background-color);
    color: var(--text-color);
    border: 2px solid var(--accent-color);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.filter-btn:hover {
    background-color: rgba(187, 134, 252, 0.1);
    transform: translateY(-2px);
}

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

.filter-btn.active {
    background-color: var(--accent-color);
    color: white;
}

.skills-container {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.skill-category {
    opacity: 1;
    transition: opacity 0.3s ease, max-height 0.3s ease;
}

.skill-category.hidden {
    display: none;
}

.skill-category h3 {
    color: var(--accent-color);
    margin-bottom: 20px;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.skill-category h3 i {
    font-size: 1.2rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.skill-item {
    background-color: rgba(187, 134, 252, 0.05);
    padding: 15px;
    border-radius: 8px;
    border: 1px solid rgba(187, 134, 252, 0.2);
    transition: all 0.3s ease;
}

.skill-item:hover {
    background-color: rgba(187, 134, 252, 0.1);
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(187, 134, 252, 0.2);
}

.skill-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.skill-name {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-color);
}

.skill-years {
    font-size: 0.85rem;
    color: var(--accent-color);
    font-weight: 500;
}

.skill-bar {
    background-color: rgba(0, 0, 0, 0.3);
    height: 8px;
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), #6200ee);
    border-radius: 10px;
    transition: width 0.5s ease;
    position: relative;
}

.skill-progress::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

/* Light theme adjustments for skills */
body.light-theme .skill-item {
    background-color: rgba(98, 0, 238, 0.05);
    border-color: rgba(98, 0, 238, 0.2);
}

body.light-theme .skill-item:hover {
    background-color: rgba(98, 0, 238, 0.1);
    border-color: #6200ee;
    box-shadow: 0 4px 12px rgba(98, 0, 238, 0.2);
}

body.light-theme .skill-bar {
    background-color: rgba(0, 0, 0, 0.1);
}

/* Enhanced skill item styling with icons */
.skill-name i {
    margin-right: 8px;
    color: var(--accent-color);
    font-size: 1.1em;
}

/* Add a subtle pulse animation on hover for skill items */
.skill-item:hover .skill-progress {
    animation: pulse-bar 1s ease-in-out;
}

@keyframes pulse-bar {
    0%, 100% {
        transform: scaleX(1);
    }
    50% {
        transform: scaleX(1.02);
    }
}

/* Enhanced hover effect with scale */
.skill-item:hover .skill-name i {
    transform: scale(1.2);
    transition: transform 0.3s ease;
}

/* Add a glowing effect to progress bars on hover */
.skill-item:hover .skill-bar {
    box-shadow: 0 0 8px rgba(187, 134, 252, 0.5);
}

/* Responsive adjustments for skills section */
@media (max-width: 768px) {
    .skills-filter {
        gap: 8px;
    }
    
    .filter-btn {
        font-size: 0.85rem;
        padding: 6px 12px;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .skill-category h3 {
        font-size: 1.1rem;
    }
}

/* ===== Activity Feed Styles ===== */
.activity-feed-header {
    margin-bottom: var(--spacing-md);
}

.activity-feed-header p {
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--accent-color);
}

.activity-filters {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    margin-top: var(--spacing-sm);
}

.filter-chip {
    background-color: var(--card-background-color);
    color: var(--text-color);
    border: 1px solid var(--text-color);
    border-radius: 20px;
    padding: 6px 16px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    outline: none;
}

.filter-chip:hover {
    background-color: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
}

.filter-chip.active {
    background-color: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
}

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

.activity-timeline {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
}

.activity-item {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background-color: rgba(187, 134, 252, 0.05);
    border-radius: 8px;
    border-left: 3px solid var(--accent-color);
    transition: all var(--transition-fast);
}

.activity-item:hover {
    background-color: rgba(187, 134, 252, 0.1);
    transform: translateX(4px);
}

.activity-icon {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
}

.activity-icon .fab {
    font-size: 1.8rem;
    color: var(--accent-color);
}

.activity-type-icon {
    position: absolute;
    bottom: -2px;
    right: -2px;
    background-color: var(--card-background-color);
    border-radius: 50%;
    padding: 2px;
    font-size: 0.75rem;
    color: var(--accent-color);
}

.activity-type-icon i {
    display: block;
}

.activity-content {
    flex: 1;
    min-width: 0; /* Allows text to wrap properly */
}

.activity-title {
    margin-bottom: 4px;
}

.activity-title a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    display: block;
    word-wrap: break-word;
}

.activity-title a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

.activity-meta {
    display: flex;
    gap: var(--spacing-sm);
    font-size: 0.8rem;
    color: var(--text-color);
    opacity: 0.7;
}

.activity-time {
    display: flex;
    align-items: center;
    gap: 4px;
}

.activity-footer {
    margin-top: var(--spacing-md);
    text-align: center;
    padding-top: var(--spacing-sm);
    border-top: 1px solid rgba(187, 134, 252, 0.2);
}

.activity-footer a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.activity-footer a:hover {
    text-decoration: underline;
}

.activity-status {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    background-color: rgba(187, 134, 252, 0.05);
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.activity-status i {
    color: var(--accent-color);
    font-size: 1.2rem;
}

.activity-error {
    background-color: rgba(255, 107, 107, 0.1);
    border-left: 3px solid #ff6b6b;
}

.activity-error i {
    color: #ff6b6b;
}

/* Light theme adjustments */
.light-theme .filter-chip {
    background-color: #f0f0f0;
    border-color: #333;
}

.light-theme .filter-chip:hover,
.light-theme .filter-chip.active {
    background-color: var(--accent-color);
    color: #fff;
}

.light-theme .activity-item {
    background-color: rgba(187, 134, 252, 0.08);
}

.light-theme .activity-item:hover {
    background-color: rgba(187, 134, 252, 0.15);
}

.light-theme .activity-status {
    background-color: rgba(187, 134, 252, 0.1);
}

/* Mobile responsive adjustments */
@media (max-width: 768px) {
    .activity-filters {
        gap: 6px;
    }
    
    .filter-chip {
        padding: 4px 12px;
        font-size: 0.8rem;
    }
    
    .activity-item {
        padding: var(--spacing-sm);
        gap: 10px;
    }
    
    .activity-icon {
        min-width: 36px;
        height: 36px;
    }
    
    .activity-icon .fab {
        font-size: 1.5rem;
    }
    
    .activity-title a {
        font-size: 0.9rem;
    }
    
    .activity-meta {
        font-size: 0.75rem;
    }
}