:root {
    /* Color Palette - Dark Mode */
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --accent-primary: #3b82f6;
    /* Blue */
    --accent-secondary: #8b5cf6;
    /* Purple */
    --accent-gradient: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    --border-color: #333333;

    /* Typography */
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    width: 100%;
}

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

ul {
    list-style: none;
}

/* Layout Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

section {
    padding: var(--spacing-xl) 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    background: var(--accent-gradient);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

/* Navigation Menu */
.nav-menu {
    position: fixed;
    top: 50%;
    left: var(--spacing-md);
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    z-index: 999;
}

.nav-link {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-left: 2px solid transparent;
    transition: all var(--transition-medium);
    position: relative;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.nav-link:hover {
    color: var(--accent-primary);
    border-left-color: var(--accent-primary);
    padding-left: 1.25rem;
    transform: translateX(5px);
}

/* Hide navigation on small screens */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
}

/* Bio Section */
#bio {
    text-align: center;
    align-items: center;
}

.bio-headline {
    font-size: 4rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
}

.bio-text {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Scroll Indicator */
.scroll-indicator {
    position: fixed;
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    opacity: 0.7;
    transition: opacity var(--transition-medium);
    cursor: pointer;
    z-index: 998;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.scroll-indicator:hover {
    opacity: 1;
}

.scroll-arrow {
    animation: bounce 2s infinite;
}

.scroll-arrow i {
    font-size: 2rem;
    color: var(--accent-primary);
    transition: transform var(--transition-medium);
}

.scroll-indicator.scroll-up .scroll-arrow {
    animation: none;
}

.scroll-indicator.scroll-up .scroll-arrow i {
    transform: rotate(180deg);
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0);
    }

    40% {
        transform: translateY(-10px);
    }

    60% {
        transform: translateY(-5px);
    }
}

/* Connect Section */
.social-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    max-width: 800px;
    margin: 0 auto;
}

.social-card {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: var(--transition-medium);
}

.social-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    background: var(--bg-tertiary);
}

.social-icon {
    font-size: 2rem;
    color: var(--text-secondary);
}

.social-card:hover .social-icon {
    color: var(--accent-primary);
}


/* Career Section */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

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

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

.timeline-dot {
    position: absolute;
    left: -5px;
    top: 0;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-primary);
    box-shadow: 0 0 0 4px var(--bg-primary);
}

.timeline-date {
    font-size: 0.9rem;
    color: var(--accent-secondary);
    margin-bottom: var(--spacing-xs);
    display: block;
}

.timeline-role {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.timeline-company {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.timeline-description {
    list-style-type: disc;
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.timeline-description li {
    margin-bottom: 0.25rem;
}

.timeline-skills {
    font-size: 0.9rem;
    color: var(--accent-secondary);
    font-style: italic;
}

/* Community Section */
.note-form {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-sm);
}

textarea,
input {
    width: 100%;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: var(--spacing-sm);
    border-radius: 0.5rem;
    font-family: var(--font-sans);
    resize: vertical;
}

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

.btn {
    background: var(--accent-gradient);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.btn:hover {
    opacity: 0.9;
}

/* Language Switcher */
.language-switcher {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    gap: 10px;
}

.lang-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 1rem;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: var(--transition-fast);
    padding: 0;
}

.lang-btn:hover {
    color: var(--accent-primary);
}

.lang-active {
    color: var(--accent-primary);
    font-weight: 800;
}

/* Utility Classes */
.community-intro {
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.form-status {
    margin-top: 1rem;
    text-align: center;
    display: none;
}

.contact-intro {
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
}

.highlight-name {
    color: var(--accent-primary);
}

/* Get In Touch */
.contact-wrapper {
    text-align: center;
}

/* Footer */
footer {
    text-align: center;
    padding: var(--spacing-md) 0;
    margin-top: var(--spacing-lg);
    opacity: 0.5;
}

.footer-text {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* ===== RESPONSIVE MEDIA QUERIES ===== */

/* Mobile Devices (< 768px) */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .bio-headline {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .timeline::before {
        left: 0;
    }
}

/* Tablets (< 1024px) */
@media (max-width: 1024px) {
    .social-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .social-left {
        width: 100%;
        justify-content: center;
    }

    .social-right {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
        width: 100%;
    }
}

/* Small Desktops (< 1280px) */
@media (max-width: 1280px) {
    .nav-menu {
        display: none;
    }
}

/* Hamburger Menu */
.hamburger {
    display: none;
    cursor: pointer;
    background: none;
    border: none;
    padding: 10px;
    z-index: 1001;
    position: fixed;
    top: 20px;
    left: 20px;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    -webkit-transition: all 0.3s ease-in-out;
    transition: all 0.3s ease-in-out;
    background-color: var(--text-primary);
}

/* Mobile Menu Styles */
@media (max-width: 768px) {
    .hamburger {
        display: block;
    }

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

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .nav-menu {
        display: flex;
        /* Override display: none */
        position: fixed;
        left: -100%;
        top: 0;
        flex-direction: column;
        background-color: var(--bg-secondary);
        width: 100%;
        height: 100vh;
        /* Full screen */
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        justify-content: center;
        align-items: center;
        padding-top: 0;
        /* Reset padding */
        transform: none;
        /* Reset transform from desktop styles */
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-link {
        font-size: 1.5rem;
        /* Larger font for mobile */
        margin: 1rem 0;
    }

    /* Adjust Language Switcher position for mobile to not overlap hamburger */
    .language-switcher {
        top: 25px;
        right: 25px;
    }
}