/* ==========================================================================
   CSS Variables & Theme Setup
   ========================================================================== */
   :root {
    /* Color Palette - Premium Dark Theme */
    --color-bg: #0a0a0c;
    --color-bg-alt: #111115;
    --color-surface: rgba(255, 255, 255, 0.03);
    --color-surface-hover: rgba(255, 255, 255, 0.06);
    --color-border: rgba(255, 255, 255, 0.08);
    
    --color-primary: #3b82f6; /* Modern Blue */
    --color-primary-glow: rgba(59, 130, 246, 0.4);
    --color-secondary: #10b981; /* Emerald Accent */
    --color-accent: #8b5cf6; /* Violet Accent */
    --color-gold: #f59e0b; /* Premium Amber Gold */
    --color-gold-glow: 0 0 20px rgba(245, 158, 11, 0.4);
    
    --color-text: #e2e8f0;
    --color-text-muted: #94a3b8;
    --color-heading: #ffffff;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-display: 'Space Grotesk', var(--font-sans);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    
    /* Transitions & Shadows */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.3s ease;
    --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --shadow-glow: 0 0 20px var(--color-primary-glow);
    
    /* Layout */
    --max-width: 1200px;
    --nav-height: 80px;
}

[data-theme="light"] {
    --color-bg: #f8fafc;
    --color-bg-alt: #f1f5f9;
    --color-surface: rgba(255, 255, 255, 0.8);
    --color-surface-hover: rgba(255, 255, 255, 1);
    --color-border: rgba(0, 0, 0, 0.1);
    
    --color-primary: #2563eb;
    --color-primary-glow: rgba(37, 99, 235, 0.3);
    
    --color-text: #334155;
    --color-text-muted: #64748b;
    --color-heading: #0f172a;
    
    --shadow-glass: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    color: var(--color-heading);
    font-weight: 700;
    line-height: 1.2;
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* Background Canvas */
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.4;
    pointer-events: none;
}

/* ==========================================================================
   Typography
   ========================================================================== */
.section-subtitle {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
    letter-spacing: 2px;
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-md);
}

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

/* ==========================================================================
   Layout & Components
   ========================================================================== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.section {
    padding: var(--spacing-xl) 0;
}

.bg-alternate {
    background-color: var(--color-bg-alt);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: 4px;
    font-weight: 600;
    font-family: var(--font-display);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 0 15px transparent;
}

.btn-primary:hover {
    background: #2563eb;
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
    color: #fff;
}

.btn-gold {
    background: var(--color-gold);
    color: #0a0a0c;
    box-shadow: 0 0 15px transparent;
}

.btn-gold:hover {
    background: #d97706; /* Slightly darker amber/gold on hover */
    box-shadow: var(--color-gold-glow);
    transform: translateY(-2px);
    color: #0a0a0c;
}

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

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.btn-text {
    background: transparent;
    color: var(--color-text);
}

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

.w-100 {
    width: 100%;
}

/* Glassmorphism Card */
.glass-card {
    background: var(--color-surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 2rem;
    transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.glass-card:hover {
    transform: translateY(-5px);
    background: var(--color-surface-hover);
    box-shadow: var(--shadow-glass);
}

/* ==========================================================================
   Navigation
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background: rgba(10, 10, 12, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: all var(--transition-smooth);
}

[data-theme="light"] .navbar {
    background: rgba(248, 250, 252, 0.8);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-display);
    color: var(--color-heading);
}

.logo-accent {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--color-text-muted);
    font-weight: 500;
    position: relative;
    transition: color var(--transition-smooth), text-shadow var(--transition-smooth);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-smooth), background var(--transition-smooth);
}

.nav-link:hover {
    color: var(--color-heading);
}

.nav-link.active {
    color: var(--color-accent);
    text-shadow: 0 0 10px rgba(139, 92, 246, 0.4);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link.active::after {
    width: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.nav-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

#theme-toggle {
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 1.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    transition: background var(--transition-fast);
}

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

.light-icon { display: none; }
.dark-icon { display: block; }
[data-theme="light"] .light-icon { display: block; }
[data-theme="light"] .dark-icon { display: none; }

.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.bar {
    display: block;
    width: 25px;
    height: 2px;
    margin: 5px auto;
    background-color: var(--color-heading);
    transition: all 0.3s ease-in-out;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    padding-top: var(--nav-height);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    text-align: center;
}

.profile-image-container {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
}

.profile-placeholder {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--color-primary);
    border: 2px solid var(--color-gold);
    overflow: hidden;
    position: relative;
    box-shadow: 0 0 15px rgba(245, 158, 11, 0.3);
    padding: 0 !important;
    animation: goldGlowPulse 4s ease-in-out infinite;
}

.profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

@keyframes goldGlowPulse {
    0% {
        box-shadow: 0 0 15px rgba(245, 158, 11, 0.3);
        border-color: rgba(245, 158, 11, 0.8);
    }
    50% {
        box-shadow: 0 0 30px rgba(245, 158, 11, 0.6);
        border-color: rgba(245, 158, 11, 1);
    }
    100% {
        box-shadow: 0 0 15px rgba(245, 158, 11, 0.3);
        border-color: rgba(245, 158, 11, 0.8);
    }
}

.greeting {
    color: var(--color-primary);
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.name {
    font-size: clamp(2.5rem, 8vw, 5rem);
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
}

.title {
    font-size: clamp(1.2rem, 2vw, 1.5rem);
    color: var(--color-text-muted);
    font-weight: 400;
    margin-bottom: 1.5rem;
}

.divider {
    color: var(--color-border);
    margin: 0 0.5rem;
}

.hero-desc {
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto 2.5rem;
    color: var(--color-text);
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ==========================================================================
   Hero Entrance Animations
   ========================================================================== */
.profile-image-container {
    opacity: 0;
    animation: fadeInScaleUp 1.2s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
    animation-delay: 0.3s;
}

.greeting {
    opacity: 0;
    animation: fadeIn 1s ease forwards;
    animation-delay: 0.1s;
}

.name {
    opacity: 0;
    animation: slideUpFadeIn 1s ease forwards;
    animation-delay: 0.3s;
}

.title {
    opacity: 0;
    animation: slideUpFadeIn 1s ease forwards;
    animation-delay: 0.5s;
}

.hero-desc {
    opacity: 0;
    animation: slideUpFadeIn 1s ease forwards;
    animation-delay: 0.6s;
}

.hero-cta {
    opacity: 0;
    animation: fadeIn 1s ease forwards;
    animation-delay: 0.8s;
}

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

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

@keyframes fadeInScaleUp {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0.6;
    transition: opacity var(--transition-fast);
}

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

.mouse {
    width: 26px;
    height: 40px;
    border: 2px solid var(--color-text-muted);
    border-radius: 14px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 1.5s infinite;
}

@keyframes scroll {
    0% { top: 6px; opacity: 1; }
    100% { top: 20px; opacity: 0; }
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.about-text p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.quick-facts {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border);
}

.fact {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    color: var(--color-heading);
}

.fact i {
    color: var(--color-primary);
    font-size: 1.25rem;
}

/* ==========================================================================
   Stats Bar Section
   ========================================================================== */
.stats-section {
    padding: var(--spacing-md) 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    text-align: center;
    padding: 2.5rem 2rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.stat-number-wrapper {
    font-size: clamp(2.5rem, 5vw, 4.2rem);
    font-weight: 700;
    font-family: var(--font-display);
    line-height: 1;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-number {
    color: var(--color-accent);
    text-shadow: 0 0 20px rgba(139, 92, 246, 0.4);
}

.stat-plus {
    color: var(--color-primary);
    text-shadow: 0 0 20px rgba(59, 130, 246, 0.4);
    margin-left: 2px;
}

.stat-label {
    font-size: clamp(0.9rem, 1.5vw, 1.1rem);
    color: var(--color-text-muted);
    font-weight: 500;
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 2rem 1.5rem;
    }
}

/* ==========================================================================
   Core Fields
   ========================================================================== */
.cards-grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
    gap: 2rem;
}

.field-card {
    text-align: center;
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease !important;
}

.field-card:hover {
    transform: translateY(-6px) !important;
    border-color: var(--color-gold) !important;
    box-shadow: var(--color-gold-glow) !important;
}

.card-icon {
    font-size: 3rem;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

.field-card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.field-card ul {
    color: var(--color-text-muted);
}

.field-card ul li {
    margin-bottom: 0.5rem;
}

/* ==========================================================================
   PCB Engineering
   ========================================================================== */
.pcb-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 350px), 1fr));
    gap: 2rem;
}

.card-title-border {
    padding-bottom: 1rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-border);
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-size: 1.05rem;
}

.feature-list i {
    color: var(--color-secondary);
    font-size: 1.25rem;
}

/* ==========================================================================
   Tools & Protocols
   ========================================================================== */
.tools-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.subsection-title {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
}

.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }

.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.tech-tag {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: 0.5rem 1rem;
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 500;
}

.tech-tag.advanced {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(59, 130, 246, 0.1);
}

.hardware-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
}

.tag-outline {
    border: 1px solid var(--color-border);
    padding: 0.4rem 1rem;
    border-radius: 4px;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.protocols-grid {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.protocol-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.protocol-name {
    width: 60px;
    font-weight: 600;
    font-family: var(--font-display);
}

.protocol-bar {
    flex: 1;
    height: 6px;
    background: var(--color-bg);
    border-radius: 3px;
    overflow: hidden;
}

.protocol-bar .fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: 3px;
}

/* ==========================================================================
   Projects
   ========================================================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 350px), 1fr));
    gap: 2rem;
}

.project-card {
    padding: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.project-content {
    padding: 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.project-icon {
    font-size: 2rem;
    color: var(--color-primary);
}

.project-desc {
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
    flex: 1;
}

.project-challenges {
    font-size: 0.9rem;
    background: var(--color-surface);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    border-left: 3px solid var(--color-accent);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.project-tech span {
    font-size: 0.8rem;
    color: var(--color-primary);
    font-family: var(--font-display);
    font-weight: 500;
}

.btn-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-family: var(--font-display);
    margin-top: auto;
}

.btn-link:hover {
    gap: 0.75rem;
}

/* ==========================================================================
   Experience Timeline
   ========================================================================== */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20px;
    height: 100%;
    width: 2px;
    background: var(--color-border);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 60px;
}

.timeline-dot {
    position: absolute;
    top: 24px;
    left: 14px;
    width: 14px;
    height: 14px;
    background: var(--color-primary);
    border-radius: 50%;
    box-shadow: 0 0 0 4px var(--color-bg), 0 0 0 6px var(--color-primary);
}

.timeline-date {
    display: inline-block;
    color: var(--color-primary);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.timeline-title {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.timeline-company {
    color: var(--color-text-muted);
    font-weight: 400;
    font-size: 1rem;
    margin-bottom: 1rem;
}

.timeline-content ul {
    list-style-type: disc;
    padding-left: 1.2rem;
    color: var(--color-text-muted);
}

.timeline-content ul li {
    margin-bottom: 0.5rem;
}

/* ==========================================================================
   Services
   ========================================================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
    gap: 2rem;
}

.service-card {
    transition: transform 0.3s ease;
}

.service-icon {
    font-size: 2.5rem;
    color: var(--color-secondary);
    margin-bottom: 1rem;
}

.service-card h3 {
    margin-bottom: 0.75rem;
}

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

/* ==========================================================================
   Career Objective
   ========================================================================== */
.objective-box {
    text-align: center;
    padding: 4rem 2rem;
    position: relative;
    overflow: hidden;
}

.quote-icon {
    font-size: 3rem;
    color: var(--color-primary);
    opacity: 0.2;
    margin-bottom: 1rem;
}

.objective-box h2 {
    margin-bottom: 1.5rem;
}

.objective-text {
    font-size: 1.25rem;
    font-style: italic;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ==========================================================================
   Contact
   ========================================================================== */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-desc {
    color: var(--color-text-muted);
    margin-bottom: 3rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.info-icon {
    width: 40px;
    height: 40px;
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.info-item h4 {
    margin-bottom: 0.25rem;
    font-size: 1rem;
}

.info-item a, .info-item span {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-icon {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.social-icon:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
    transform: translateY(-3px);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-family: var(--font-display);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    color: var(--color-text);
    font-family: var(--font-sans);
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

/* ==========================================================================
   Footer
   ========================================================================== */
footer {
    padding: 2rem 0;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.back-to-top {
    width: 40px;
    height: 40px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.back-to-top:hover {
    background: var(--color-primary);
    color: white;
}

/* ==========================================================================
   Animations
   ========================================================================== */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

/* ==========================================================================
   Modals & Galleries
   ========================================================================== */

/* Project Slideshow Styles */
.project-slider-wrapper {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
}

.project-slider-wrapper .project-gallery-preview {
    display: flex;
    width: 100%;
    height: 100%;
    padding: 0;
    overflow-x: hidden;
    scroll-snap-type: none;
    position: relative;
}

.project-slider-wrapper .project-gallery-preview::-webkit-scrollbar {
    display: none;
}

.project-slider-wrapper .project-gallery-preview img {
    flex: 0 0 100%;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 0;
    border: none;
    opacity: 0;
    visibility: hidden;
    position: absolute;
    top: 0;
    left: 0;
    transition: opacity 0.5s ease, visibility 0.5s ease;
    z-index: 1;
}

.project-slider-wrapper .project-gallery-preview img.active {
    opacity: 1;
    visibility: visible;
    position: relative;
    z-index: 2;
}

/* Slideshow Arrows */
.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(10, 10, 12, 0.6);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: var(--color-gold);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: all var(--transition-fast);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    padding: 0;
}

.slider-arrow:hover {
    background: var(--color-gold);
    color: #0a0a0c;
    border-color: var(--color-gold);
    box-shadow: var(--color-gold-glow);
}

.prev-arrow {
    left: 12px;
}

.next-arrow {
    right: 12px;
}

/* Slideshow Dots */
.slider-dots {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 6px;
    z-index: 10;
}

.slider-dots .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid rgba(0, 0, 0, 0.2);
}

.slider-dots .dot.active {
    background: var(--color-gold);
    box-shadow: 0 0 8px var(--color-gold);
    transform: scale(1.2);
}

.btn-link {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    padding: 0;
    color: var(--color-primary);
}

/* Modal Overlay */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Modal Content Box */
.modal-content {
    position: relative;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 2rem;
    transform: translateY(30px) scale(0.95);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: var(--shadow-glass);
}

.modal-overlay.active .modal-content {
    transform: translateY(0) scale(1);
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.25rem;
    transition: all var(--transition-fast);
    z-index: 10;
}

.modal-close:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    transform: rotate(90deg);
}

.modal-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-right: 3rem;
}

.modal-icon {
    font-size: 2.5rem;
    color: var(--color-primary);
}

.modal-header h2 {
    font-size: 1.75rem;
    margin: 0;
}

/* Modal Gallery */
.modal-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.modal-gallery img {
    width: 100%;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    transition: transform var(--transition-fast);
}

.modal-gallery img:hover {
    transform: scale(1.02);
}

.modal-body h3 {
    font-size: 1.25rem;
    margin: 1.5rem 0 0.75rem;
    color: var(--color-secondary);
}

.modal-body p {
    color: var(--color-text);
    margin-bottom: 1rem;
    line-height: 1.7;
}

.modal-body ul {
    list-style-type: disc;
    padding-left: 1.5rem;
    color: var(--color-text);
    margin-bottom: 1rem;
}

.modal-body ul li {
    margin-bottom: 0.5rem;
}

.modal-tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border);
}

/* ==========================================================================
   Media Queries
   ========================================================================== */
@media (max-width: 992px) {
    .tools-layout {
        grid-template-columns: 1fr;
    }
    .contact-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: var(--nav-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--nav-height));
        background: var(--color-bg);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: left 0.3s ease;
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .hamburger {
        display: block;
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }
    
    .hero-content {
        padding-top: 2rem;
    }
    
    .title {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .divider {
        display: none;
    }
    
    .timeline::before {
        left: 0;
    }
    .timeline-item {
        padding-left: 30px;
    }
    .timeline-dot {
        left: -6px;
    }
}

@media (max-width: 576px) {
    .glass-card:not(.project-card):not(.profile-placeholder) {
        padding: 1.5rem;
    }
    .project-content {
        padding: 1.5rem;
    }
    .modal-content {
        padding: 1.5rem;
    }
    .hero-cta {
        flex-direction: column;
    }
    .hero-cta .btn {
        width: 100%;
        justify-content: center;
    }
    .modal-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    .profile-placeholder {
        width: 120px;
        height: 120px;
    }
}

/* ==========================================================================
   Lightbox Overlay
   ========================================================================== */
.lightbox-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 10, 12, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.lightbox-overlay.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-content {
    max-width: 90%;
    max-height: 90%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    transform: scale(0.95);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.lightbox-overlay.active .lightbox-content img {
    transform: scale(1);
}

.lightbox-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--color-gold);
    cursor: pointer;
    z-index: 3010;
    transition: transform var(--transition-fast), color var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
}

.lightbox-close:hover {
    transform: rotate(90deg);
    color: #ffffff;
}

/* Lightbox Navigation Arrows */
.lightbox-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(10, 10, 12, 0.6);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: var(--color-gold);
    width: 54px;
    height: 54px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 3010;
    transition: all var(--transition-fast);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    font-size: 1.75rem;
    padding: 0;
}

.lightbox-arrow:hover {
    background: var(--color-gold);
    color: #0a0a0c;
    border-color: var(--color-gold);
    box-shadow: var(--color-gold-glow);
}

.lightbox-prev {
    left: 2.5rem;
}

.lightbox-next {
    right: 2.5rem;
}

@media (max-width: 768px) {
    .lightbox-arrow {
        width: 44px;
        height: 44px;
        font-size: 1.35rem;
    }
    .lightbox-prev {
        left: 1rem;
    }
    .lightbox-next {
        right: 1rem;
    }
}

/* Clickable Project Card Elements */
.project-gallery-preview {
    cursor: pointer;
}

.project-header h3 {
    cursor: pointer;
}

/* How I Work Section */
.steps-container {
    display: flex;
    justify-content: space-between;
    align-items: stretch;
    gap: 0.75rem;
    margin-top: 2rem;
}

.step-card {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 2.25rem 1.75rem;
    text-align: left;
    height: auto;
    transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast) !important;
}

.step-card:hover {
    transform: translateY(-6px) !important;
    border-color: var(--color-gold) !important;
    box-shadow: var(--color-gold-glow) !important;
}

.step-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.step-number {
    font-size: 2.25rem;
    font-family: var(--font-display);
    font-weight: 700;
    color: var(--color-gold);
    opacity: 0.8;
    line-height: 1;
}

.step-icon {
    font-size: 2.5rem;
    color: var(--color-primary);
    display: flex;
    align-items: center;
}

.step-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.75rem;
    line-height: 1.4;
    color: var(--color-heading);
}

.step-card p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin: 0;
}

.step-connector {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gold);
    font-size: 1.5rem;
}

.step-connector i {
    color: var(--color-gold);
    filter: drop-shadow(0 0 5px rgba(245, 158, 11, 0.4));
    animation: bounceConnector 2s infinite ease-in-out;
}

@keyframes bounceConnector {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(4px); }
}

@media (max-width: 992px) {
    .steps-container {
        flex-direction: column;
        align-items: stretch;
        gap: 1.5rem;
    }
    
    .step-connector {
        margin: 0.5rem 0;
    }
    
    .step-connector i {
        animation: bounceConnectorVertical 2s infinite ease-in-out;
    }
}

@keyframes bounceConnectorVertical {
    0%, 100% { transform: translateY(0) rotate(90deg); }
    50% { transform: translateY(4px) rotate(90deg); }
}

/* Hero Availability Badge */
.availability-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.25);
    padding: 0.5rem 1.15rem;
    border-radius: 30px;
    margin-bottom: 1.5rem;
    font-size: 0.85rem;
    font-weight: 600;
    font-family: var(--font-display);
    color: var(--color-secondary); /* Emerald Green Accent */
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    opacity: 0;
    animation: fadeIn 1s ease forwards;
    animation-delay: 0.4s;
    letter-spacing: 0.5px;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--color-secondary);
    border-radius: 50%;
    position: relative;
    display: inline-block;
}

.pulse-dot::after {
    content: '';
    width: 100%;
    height: 100%;
    background-color: var(--color-secondary);
    border-radius: 50%;
    position: absolute;
    top: 0;
    left: 0;
    transform: scale(1);
    opacity: 1;
    animation: pulseGlow 2s infinite ease-out;
}

@keyframes pulseGlow {
    0% {
        transform: scale(1);
        opacity: 0.8;
    }
    100% {
        transform: scale(2.5);
        opacity: 0;
    }
}

/* Service Card Benefit Line */
.service-benefit {
    display: block;
    margin-top: 0.75rem;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    opacity: 0.75;
    border-top: 1px dashed var(--color-border);
    padding-top: 0.75rem;
    line-height: 1.5;
}

/* FAQ Section */
.faq-container {
    max-width: 800px;
    margin: 2.5rem auto 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    border: 1px solid var(--color-border);
    border-radius: 12px;
    overflow: hidden;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast) !important;
}

.faq-item:hover {
    border-color: rgba(245, 158, 11, 0.4) !important;
}

.faq-item.active {
    border-color: var(--color-gold) !important;
    box-shadow: var(--color-gold-glow) !important;
    background: rgba(10, 10, 12, 0.4);
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 1.25rem 1.75rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
    cursor: pointer;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-heading);
    transition: color var(--transition-fast);
    outline: none;
}

.faq-question span {
    font-family: var(--font-display);
    padding-right: 1.5rem;
}

.faq-item.active .faq-question {
    color: var(--color-gold);
}

.faq-icon {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), color 0.3s ease;
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
    color: var(--color-gold);
}

.faq-answer {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.faq-answer > p {
    min-height: 0;
    margin: 0;
    padding: 0 1.75rem 1.5rem 1.75rem;
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.faq-item.active .faq-answer {
    grid-template-rows: 1fr;
}

.faq-item.active .faq-answer > p {
    opacity: 1;
}

/* Animated PCB Background - Full Page Global */
.global-pcb-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1; /* Behind all sections and content */
    pointer-events: none;
    overflow: hidden;
    opacity: 0.15; /* Exact requested opacity */
}

.global-pcb-bg svg {
    width: 100%;
    height: 100%;
}

/* Elevate hero content so it stays on top of the background layer */
.hero-content {
    position: relative;
    z-index: 2;
}

.scroll-indicator {
    z-index: 2;
}

/* Animations for PCB traces using stroke-dasharray & stroke-dashoffset */
.pcb-trace {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    animation: drawTrace 12s infinite linear alternate;
}

.trace-1 { animation-delay: 0s; }
.trace-2 { animation-delay: 2s; }
.trace-3 { animation-delay: 1s; }
.trace-4 { animation-delay: 3s; }
.trace-5 { animation-delay: 1.5s; }
.trace-6 { animation-delay: 2.5s; }
.trace-7 { animation-delay: 0.5s; }
.trace-8 { animation-delay: 3.5s; }
.trace-9 { animation-delay: 4s; }
.trace-10 { animation-delay: 2.2s; }
.trace-11 { animation-delay: 1.8s; }
.trace-12 { animation-delay: 0.8s; }
.trace-13 { animation-delay: 2.8s; }

.pcb-pad {
    opacity: 0;
    transform-origin: center;
    animation: pulsePad 4s infinite ease-in-out;
}

.pad-1 { animation-delay: 3s; }
.pad-2 { animation-delay: 5s; }
.pad-3 { animation-delay: 2.5s; }
.pad-4 { animation-delay: 4.5s; }
.pad-5 { animation-delay: 3.5s; }
.pad-6 { animation-delay: 4s; }
.pad-7 { animation-delay: 2s; }
.pad-8 { animation-delay: 5.5s; }
.pad-9 { animation-delay: 6s; }
.pad-10 { animation-delay: 4.2s; }
.pad-11 { animation-delay: 3.8s; }
.pad-12 { animation-delay: 2.8s; }
.pad-13 { animation-delay: 4.8s; }

@keyframes drawTrace {
    0% {
        stroke-dashoffset: 1000;
        opacity: 0.2;
    }
    30% {
        opacity: 1;
    }
    70% {
        opacity: 1;
    }
    100% {
        stroke-dashoffset: 0;
        opacity: 0.2;
    }
}

@keyframes pulsePad {
    0%, 100% {
        opacity: 0.1;
        transform: scale(0.8);
    }
    50% {
        opacity: 1;
        transform: scale(1.2);
    }
}

/* Floating Hire Me Button */
.floating-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--color-gold);
    color: #0a0a0c !important;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.95rem;
    padding: 0.75rem 1.25rem;
    border-radius: 50px;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(245, 158, 11, 0.4);
    z-index: 1000;
    transition: transform var(--transition-fast), opacity 0.3s ease, visibility 0.3s ease, box-shadow var(--transition-fast) !important;
    border: 1px solid rgba(245, 158, 11, 0.3);
    opacity: 0;
    visibility: hidden;
    animation: floatingPulse 2.5s infinite ease-in-out;
}

.floating-btn.active {
    opacity: 1;
    visibility: visible;
}

.floating-btn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 6px 25px rgba(245, 158, 11, 0.6);
}

.floating-btn i {
    font-size: 1.15rem;
}

@keyframes floatingPulse {
    0%, 100% {
        box-shadow: 0 4px 20px rgba(245, 158, 11, 0.4);
    }
    50% {
        box-shadow: 0 4px 30px rgba(245, 158, 11, 0.8);
        transform: scale(1.03);
    }
}

/* Adjust floating button position for small screen margins */
@media (max-width: 576px) {
    .floating-btn {
        bottom: 1.5rem;
        right: 1.5rem;
        padding: 0.65rem 1.1rem;
        font-size: 0.9rem;
    }
}

/* Scroll Progress Bar */
#scroll-progress-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: transparent;
    z-index: 9999; /* Higher than navbar and other elements */
    pointer-events: none;
}

#scroll-progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--color-gold), #f59e0b, #fbbf24);
    box-shadow: 0 0 10px var(--color-gold);
    transition: width 0.1s ease-out;
}

/* Navigation Projects Count Badge */
.nav-projects-link {
    display: inline-flex !important;
    align-items: center;
    gap: 0.35rem;
}

.projects-badge {
    background-color: var(--color-gold);
    color: #0a0a0c;
    font-size: 0.7rem;
    font-weight: 700;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    transform: translateY(-1px);
}

/* Footer Copyright & Last Updated styling */
.footer-copyright-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    text-align: center;
}

.footer-last-updated {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    opacity: 0.7;
}

/* ==========================================================================
   FAQ Section Accordion
   ========================================================================== */
.faq-container {
    max-width: 800px;
    margin: 3rem auto 0;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.faq-item {
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: border-color var(--transition-smooth), box-shadow var(--transition-smooth);
    /* Override glass-card padding so button/answer control their own spacing */
    padding: 0 !important;
}

/* Disable the lift hover on FAQ items — accordion handles interaction */
.faq-item.glass-card:hover {
    transform: none;
}

.faq-item.active {
    border-color: var(--color-gold);
    box-shadow: var(--color-gold-glow);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    background: transparent;
    border: none;
    outline: none;
    color: var(--color-heading);
    font-size: 1.1rem;
    font-weight: 600;
    font-family: var(--font-display);
    text-align: left;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.faq-question:hover {
    color: var(--color-gold);
}

.faq-item.active .faq-question {
    color: var(--color-gold);
}

.faq-icon {
    font-size: 1.25rem;
    transition: transform var(--transition-smooth);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
    color: var(--color-gold);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    padding: 0 2rem;
    transition: all var(--transition-smooth);
    opacity: 0;
}

.faq-item.active .faq-answer {
    max-height: 200px;
    padding: 0 2rem 1.5rem;
    opacity: 1;
}

.faq-answer p {
    color: var(--color-text-muted);
    line-height: 1.7;
    margin: 0;
}