/* ============================================
   NITISH KUMAR - PORTFOLIO WEBSITE STYLES
   Professional Technical Aesthetic
   ============================================ */

/* CSS Variables for Theme Consistency */
:root {
    /* Color Palette - Electric Technical Theme */
    --color-primary: #0a192f;           /* Deep Navy */
    --color-secondary: #112240;         /* Navy Blue */
    --color-accent: #00d9ff;            /* Electric Cyan */
    --color-accent-dim: #0099ff;        /* Dimmer Cyan */
    --color-text: #e6f1ff;              /* Light Blue-White */
    --color-text-dim: #8892b0;          /* Muted Blue-Gray */
    --color-border: #233554;            /* Border Blue */
    --color-success: #00ff88;           /* Success Green */
    --color-warning: #ffa600;           /* Warning Orange */
    
    /* Typography */
    --font-display: 'Manrope', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Effects */
    --shadow-sm: 0 2px 8px rgba(0, 217, 255, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 217, 255, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 217, 255, 0.2);
    --glow: 0 0 20px rgba(0, 217, 255, 0.3);
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-display);
    background-color: var(--color-primary);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Selection Color */
::selection {
    background-color: var(--color-accent);
    color: var(--color-primary);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

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

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); }

p {
    font-size: clamp(1rem, 1.5vw, 1.125rem);
    color: var(--color-text-dim);
    margin-bottom: var(--spacing-sm);
}

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

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

/* ============================================
   UTILITY CLASSES
   ============================================ */

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.section-tag {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-accent);
    letter-spacing: 0.1em;
    display: block;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-md);
}

/* ============================================
   NAVIGATION
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    background: rgba(10, 25, 47, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    padding: var(--spacing-xs) 0;
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    flex-direction: column;
}

.logo-text {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 0.05em;
}

.logo-subtext {
    font-size: 0.75rem;
    color: var(--color-text-dim);
    font-family: var(--font-mono);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-text-dim);
    position: relative;
    padding: 0.5rem 0;
    transition: all var(--transition-fast);
}

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

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--color-accent);
    transition: all var(--transition-fast);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl) 0;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.circuit-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(90deg, var(--color-border) 1px, transparent 1px),
        linear-gradient(var(--color-border) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.1;
    animation: circuitMove 20s linear infinite;
}

@keyframes circuitMove {
    0% { background-position: 0 0; }
    100% { background-position: 50px 50px; }
}

.gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(0, 217, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 70% 80%, rgba(0, 153, 255, 0.08) 0%, transparent 50%);
}

.hero-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    position: relative;
    z-index: 1;
}

.hero-text {
    max-width: 900px;
}

.hero-title {
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

.title-line {
    display: block;
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    animation: fadeInUp 0.8s ease both;
}

.title-accent {
    display: block;
    font-size: clamp(1.5rem, 4vw, 3rem);
    font-weight: 600;
    color: var(--color-accent);
    letter-spacing: 0.05em;
    font-family: var(--font-mono);
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    color: var(--color-text-dim);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.highlight {
    color: var(--color-accent);
    font-weight: 600;
}

.hero-stats {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-mono);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--color-accent);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-dim);
}

.stat-divider {
    width: 2px;
    height: 40px;
    background: var(--color-border);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.8s both;
}

/* Buttons */
.btn {
    padding: 1rem 2rem;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all var(--transition-normal);
    display: inline-block;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

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

.btn-secondary {
    background: transparent;
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
}

.btn-secondary:hover {
    background: rgba(0, 217, 255, 0.1);
    transform: translateY(-2px);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-text-dim);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    animation: fadeIn 1s ease 1s both;
}

.scroll-line {
    width: 2px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-accent), transparent);
    animation: scrollPulse 2s ease infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: translateY(0); }
    50% { opacity: 1; transform: translateY(10px); }
}

/* ============================================
   ABOUT SECTION
   ============================================ */

.about {
    padding: var(--spacing-xl) 0;
    position: relative;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-lg);
    align-items: start;
}

.about-text {
    animation: fadeInUp 0.8s ease both;
}

.lead-text {
    font-size: clamp(1.25rem, 2vw, 1.5rem);
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.about-highlights {
    margin-top: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.highlight-item {
    display: flex;
    gap: var(--spacing-sm);
    align-items: start;
    padding: var(--spacing-sm);
    background: rgba(0, 217, 255, 0.03);
    border-left: 3px solid var(--color-accent);
    border-radius: 4px;
    transition: all var(--transition-normal);
}

.highlight-item:hover {
    background: rgba(0, 217, 255, 0.08);
    transform: translateX(8px);
}

.highlight-icon {
    font-size: 2rem;
    line-height: 1;
}

.highlight-item h4 {
    color: var(--color-text);
    margin-bottom: 0.25rem;
}

.highlight-item p {
    margin: 0;
    font-size: 0.875rem;
}

.about-image-container {
    position: relative;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.about-image-placeholder {
    position: relative;
}

.image-frame {
    width: 100%;
    aspect-ratio: 3/4;
    border: 2px solid var(--color-accent);
    border-radius: 8px;
    overflow: hidden;
    position: relative;
    background: var(--color-secondary);
}

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

.profile-photo {
    display: block;
    object-position: center top;
    filter: brightness(1.05) contrast(1.05);
    transition: transform 0.3s ease;
}

.image-frame:hover .profile-photo {
    transform: scale(1.02);
}

.placeholder-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--color-text-dim);
}

.placeholder-content p {
    font-family: var(--font-mono);
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
}

.placeholder-content span {
    font-size: 0.75rem;
}

.about-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--color-accent);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 4px;
    box-shadow: var(--shadow-lg);
}

.badge-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.badge-title {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-primary);
    text-transform: uppercase;
}

.badge-location {
    font-weight: 700;
    color: var(--color-primary);
    font-size: 1.125rem;
}

/* ============================================
   SKILLS SECTION
   ============================================ */

.skills {
    padding: var(--spacing-xl) 0;
    background: var(--color-secondary);
    position: relative;
}

.skills::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}

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

.skill-category {
    background: rgba(0, 217, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-md);
    transition: all var(--transition-normal);
    animation: fadeInUp 0.6s ease both;
}

.skill-category:nth-child(2) { animation-delay: 0.1s; }
.skill-category:nth-child(3) { animation-delay: 0.2s; }
.skill-category:nth-child(4) { animation-delay: 0.3s; }

.skill-category:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
}

.category-header h3 {
    font-size: 1.25rem;
    color: var(--color-text);
}

.category-icon {
    font-size: 1.5rem;
}

.skill-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.skill-list li {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-text-dim);
    padding-left: var(--spacing-sm);
    position: relative;
}

.skill-list li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

/* ============================================
   PROJECTS SECTION
   ============================================ */

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

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-md);
}

.project-card {
    background: var(--color-secondary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    transition: all var(--transition-normal);
    animation: fadeInUp 0.6s ease both;
}

.project-card:nth-child(2) { animation-delay: 0.1s; }
.project-card:nth-child(3) { animation-delay: 0.2s; }
.project-card:nth-child(4) { animation-delay: 0.3s; }
.project-card:nth-child(5) { animation-delay: 0.4s; }

.project-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.project-media {
    position: relative;
    width: 100%;
    aspect-ratio: 16/10;
    overflow: hidden;
    background: rgba(0, 217, 255, 0.05);
}

.media-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
}

.media-placeholder span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-dim);
    text-align: center;
    padding: var(--spacing-sm);
}

.project-media img,
.project-media video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-media img,
.project-card:hover .project-media video {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 25, 47, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.view-details {
    padding: 0.75rem 1.5rem;
    background: var(--color-accent);
    color: var(--color-primary);
    border: none;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.view-details:hover {
    transform: scale(1.05);
    box-shadow: var(--glow);
}

.project-content {
    padding: var(--spacing-md);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--spacing-sm);
    gap: var(--spacing-sm);
}

.project-header h3 {
    font-size: 1.25rem;
    color: var(--color-text);
}

.project-category {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-accent);
    background: rgba(0, 217, 255, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    white-space: nowrap;
}

.project-description {
    font-size: 0.875rem;
    color: var(--color-text-dim);
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

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

.tech-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-dim);
    background: rgba(0, 217, 255, 0.05);
    border: 1px solid var(--color-border);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.tech-tag:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* ============================================
   EXPERIENCE SECTION
   ============================================ */

.experience {
    padding: var(--spacing-xl) 0;
    background: var(--color-secondary);
}

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

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

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.6s ease both;
}

.timeline-item:nth-child(2) { animation-delay: 0.1s; }
.timeline-item:nth-child(3) { animation-delay: 0.2s; }
.timeline-item:nth-child(4) { animation-delay: 0.3s; }
.timeline-item:nth-child(5) { animation-delay: 0.4s; }

.timeline-marker {
    position: absolute;
    left: calc(-1 * var(--spacing-lg) - 6px);
    top: 0;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-accent);
    border: 3px solid var(--color-primary);
    box-shadow: 0 0 0 4px rgba(0, 217, 255, 0.2);
}

.timeline-content {
    background: rgba(0, 217, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-md);
    transition: all var(--transition-normal);
}

.timeline-content:hover {
    border-color: var(--color-accent);
    transform: translateX(8px);
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-accent);
    display: block;
    margin-bottom: 0.5rem;
}

.timeline-content h3 {
    font-size: 1.5rem;
    color: var(--color-text);
    margin-bottom: 0.25rem;
}

.timeline-content h4 {
    font-size: 1rem;
    color: var(--color-text-dim);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.timeline-content ul {
    list-style: none;
    margin-top: var(--spacing-sm);
}

.timeline-content li {
    font-size: 0.875rem;
    color: var(--color-text-dim);
    padding-left: var(--spacing-sm);
    position: relative;
    margin-bottom: 0.5rem;
}

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

.academic-highlights {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
    flex-wrap: wrap;
}

.highlight-badge {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 0.5rem 1rem;
    background: rgba(0, 217, 255, 0.1);
    border: 1px solid var(--color-accent);
    border-radius: 4px;
    color: var(--color-accent);
    font-weight: 600;
}

/* ============================================
   CONTACT SECTION
   ============================================ */

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

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.contact-info {
    animation: fadeInUp 0.6s ease both;
}

.contact-lead {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.contact-method {
    display: flex;
    gap: var(--spacing-sm);
    align-items: start;
    padding: var(--spacing-sm);
    background: rgba(0, 217, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    transition: all var(--transition-normal);
}

.contact-method:hover {
    border-color: var(--color-accent);
    transform: translateX(8px);
    background: rgba(0, 217, 255, 0.08);
}

.method-icon {
    font-size: 1.5rem;
}

.contact-method h4 {
    font-size: 0.875rem;
    color: var(--color-accent);
    margin-bottom: 0.25rem;
}

.contact-method p {
    margin: 0;
    color: var(--color-text);
}

.social-links h4 {
    font-size: 1rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.social-grid {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.social-link {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: 1px solid var(--color-accent);
    color: var(--color-accent);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    transition: all var(--transition-normal);
}

.social-link:hover {
    background: var(--color-accent);
    color: var(--color-primary);
}

.contact-form-container {
    animation: fadeInUp 0.6s ease 0.2s both;
}

.contact-form {
    background: var(--color-secondary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-md);
}

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

.form-group label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    background: rgba(0, 217, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    color: var(--color-text);
    font-family: var(--font-display);
    font-size: 1rem;
    transition: all var(--transition-normal);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    background: rgba(0, 217, 255, 0.08);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    padding: var(--spacing-lg) 0;
    background: var(--color-secondary);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-brand h3 {
    font-size: 1.5rem;
    color: var(--color-accent);
    margin-bottom: 0.25rem;
}

.footer-brand p {
    margin: 0;
    font-size: 0.875rem;
}

.footer-copyright {
    text-align: right;
}

.footer-copyright p {
    margin: 0;
    font-size: 0.75rem;
    color: var(--color-text-dim);
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-image-container {
        max-width: 400px;
        margin: 0 auto;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 100%;
        max-width: 300px;
        height: calc(100vh - 70px);
        background: var(--color-secondary);
        flex-direction: column;
        padding: var(--spacing-md);
        transition: right var(--transition-normal);
        border-left: 1px solid var(--color-border);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .hero-stats {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .stat-divider {
        display: none;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-copyright {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
}

/* Experience Page Link */
.section-description {
    text-align: center;
    margin-top: 1rem;
    font-size: 1.125rem;
    color: var(--color-text-dim);
}

.experience-link {
    display: inline-block;
    margin-left: 1rem;
    color: var(--color-accent);
    text-decoration: none;
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 1rem;
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--color-accent);
    border-radius: 4px;
    transition: all var(--transition-normal);
    margin-top: 0.5rem;
}

.experience-link:hover {
    background: var(--color-accent);
    color: var(--color-primary);
    transform: translateX(4px);
}