/* ===================================
   CSS Variables & Reset
   =================================== */
:root {
    /* Color Palette - Data-Driven Dark Theme */
    --color-bg-primary: #0a0e17;
    --color-bg-secondary: #131820;
    --color-bg-tertiary: #1a1f2e;
    --color-text-primary: #e8eaed;
    --color-text-secondary: #9ca3af;
    --color-accent: #00d9ff;
    --color-accent-dark: #00a8cc;
    --color-accent-glow: rgba(0, 217, 255, 0.3);
    
    /* Typography */
    --font-display: 'Space Mono', monospace;
    --font-body: 'Work Sans', sans-serif;
    
    /* 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;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--color-accent-glow);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
}

/* ===================================
   Scroll Progress Indicator
   =================================== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), #00a8cc);
    z-index: 1000;
    transition: width 0.1s linear;
}

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 14, 23, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    z-index: 999;
    padding: 1rem 0;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    padding: 0.5rem 0;
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo a {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    text-decoration: none;
    letter-spacing: 2px;
}

.accent-dot {
    color: var(--color-accent);
    font-size: 2rem;
    line-height: 0;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    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,
.nav-link.active::after {
    width: 100%;
}

.nav-socials {
    display: flex;
    gap: 1rem;
}

.nav-socials a {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    transition: all var(--transition-fast);
}

.nav-socials a:hover {
    color: var(--color-accent);
    transform: translateY(-2px);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--color-text-primary);
    transition: all var(--transition-fast);
}

/* ===================================
   Resume Button in Navigation
   =================================== */
/* Make Resume Button match "View My Work" button */
.btn-resume {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.9rem 1.5rem; /* Match button size */
    background: var(--color-accent); /* Solid blue */
    color: var(--color-bg-primary); /* Dark text */
    text-decoration: none;
    border-radius: var(--radius-md);
    border: 2px solid transparent; /* No border like primary button */
    font-size: 0.95rem;
    font-weight: 600;
    font-family: var(--font-body);
    transition: all var(--transition-normal);
    margin-right: 1rem;
    box-shadow: 0 4px 15px rgba(0, 217, 255, 0.3); /* Match shadow */
}

.btn-resume:hover {
    background: var(--color-accent-dark); /* Darker blue on hover */
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 217, 255, 0.4); /* Enhanced shadow */
}

.btn-resume i {
    font-size: 0.9rem;
}
/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    overflow: hidden;
}

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

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(0, 217, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 217, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.data-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 1400px;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.hero-text {
    text-align: left;
}

.hero-greeting {
    font-size: 1.2rem;
    color: var(--color-accent);
    font-family: var(--font-display);
    margin-bottom: 1rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

.hero-name {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1rem;
    font-family: var(--font-display);
    display: flex;
    flex-direction: column;
}

.name-part {
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

.name-part:nth-child(1) {
    animation-delay: 0.2s;
}

.name-part:nth-child(2) {
    animation-delay: 0.4s;
    color: var(--color-accent);
}

.hero-title-container {
    min-height: 60px;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 400;
    color: var(--color-text-secondary);
    font-family: var(--font-display);
}

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

.cursor {
    color: var(--color-accent);
    animation: blink 1s step-end infinite;
}

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

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.6s;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.8s;
}

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

.hero-stats {
    display: flex;
    gap: 4rem;
    padding: 2rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 1s;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    font-family: var(--font-display);
    color: var(--color-accent);
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-secondary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 1.2s;
}

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

@keyframes scrollArrow {
    0%, 100% { transform: translateY(0); opacity: 0; }
    50% { transform: translateY(15px); opacity: 1; }
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.9rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-bg-primary);
    box-shadow: 0 4px 15px rgba(0, 217, 255, 0.3);
}

.btn-primary:hover {
    background: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 217, 255, 0.4);
}

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

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

/* ===================================
   Common Section Styles
   =================================== */
section {
    padding: var(--spacing-xl) 2rem;
    position: relative;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

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

.section-label {
    display: inline-block;
    font-size: 0.9rem;
    font-family: var(--font-display);
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    font-family: var(--font-display);
    color: var(--color-text-primary);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--color-accent);
}

/* ===================================
   About Section
   =================================== */
.about {
    background: var(--color-bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    align-items: flex-start;
}

.about-text {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.about-intro {
    font-size: 1.3rem;
    line-height: 1.8;
    color: var(--color-text-primary);
}

.about-text p {
    font-size: 1.05rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.about-text strong {
    color: var(--color-accent);
}

.about-highlights {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2rem;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-accent);
    transition: all var(--transition-normal);
}

.highlight-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-glow);
}

.highlight-item i {
    font-size: 2rem;
    color: var(--color-accent);
}

.highlight-item h4 {
    font-size: 1.1rem;
    color: var(--color-text-primary);
    margin-bottom: 0.25rem;
}

.highlight-item p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
}

.about-image {
    position: relative;
}

.image-container {
    position: relative;
    width: 100%;
    height: 600px;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.image-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--color-bg-tertiary), var(--color-bg-secondary));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    border: 2px dashed rgba(0, 217, 255, 0.3);
}

.image-placeholder i {
    font-size: 4rem;
    color: var(--color-accent);
}

.image-placeholder p {
    color: var(--color-text-secondary);
    font-size: 1rem;
}

.image-decoration {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 200px;
    height: 200px;
    border: 3px solid var(--color-accent);
    border-radius: var(--radius-lg);
    z-index: -1;
}

/* ===================================
   Experience Section - Timeline
   =================================== */
.timeline {
    position: relative;
    padding: 2rem 0;
}

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

.timeline-item {
    position: relative;
    padding-left: 80px;
    margin-bottom: 4rem;
}

.timeline-dot {
    position: absolute;
    left: 22px;
    top: 0;
    width: 18px;
    height: 18px;
    background: var(--color-accent);
    border: 3px solid var(--color-bg-primary);
    border-radius: 50%;
    box-shadow: var(--shadow-glow);
}

.timeline-date {
    position: absolute;
    left: 80px;
    top: -30px;
    font-family: var(--font-display);
    font-size: 0.85rem;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.timeline-content {
    background: var(--color-bg-secondary);
    padding: 2rem;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-normal);
}

.timeline-content:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-glow);
    transform: translateY(-5px);
}

.timeline-content h3 {
    font-size: 1.5rem;
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
    font-family: var(--font-display);
}

.timeline-content h4 {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

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

.timeline-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.timeline-list li {
    position: relative;
    padding-left: 1.5rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

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

.timeline-list strong {
    color: var(--color-accent);
    font-weight: 600;
}

/* ===================================
   Projects Section
   =================================== */
.projects {
    background: var(--color-bg-secondary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.project-card {
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-normal);
}

.project-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-glow);
}

.project-image {
    position: relative;
    width: 100%;
    height: 250px;
    overflow: hidden;
}

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

.project-placeholder i {
    font-size: 4rem;
    color: var(--color-accent);
    opacity: 0.5;
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 217, 255, 0.95);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

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

.project-overlay h3 {
    font-size: 1.5rem;
    color: var(--color-bg-primary);
    font-family: var(--font-display);
    margin-bottom: 0.5rem;
    text-align: center;
}

.project-overlay p {
    color: var(--color-bg-primary);
    text-align: center;
    font-weight: 500;
}

.project-content {
    padding: 2rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tag {
    padding: 0.4rem 1rem;
    background: rgba(0, 217, 255, 0.1);
    color: var(--color-accent);
    border-radius: 20px;
    font-size: 0.8rem;
    font-family: var(--font-display);
    border: 1px solid rgba(0, 217, 255, 0.3);
}

.project-content h3 {
    font-size: 1.4rem;
    color: var(--color-text-primary);
    margin-bottom: 1rem;
    font-family: var(--font-display);
}

.project-content > p {
    color: var(--color-text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.project-metrics {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
    padding: 1rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.metric {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.metric strong {
    font-size: 1.8rem;
    color: var(--color-accent);
    font-family: var(--font-display);
}

.metric span {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

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

.project-highlights li {
    position: relative;
    padding-left: 1.5rem;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.project-highlights li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

/* ===================================
   Project Link Buttons
   =================================== */
.project-links {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.project-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 1.25rem;
    font-size: 0.88rem;
    font-weight: 600;
    font-family: var(--font-display);
    text-decoration: none;
    border-radius: 30px;
    border: 1.5px solid var(--color-accent);
    color: var(--color-accent);
    background: rgba(0, 217, 255, 0.06);
    transition: all var(--transition-normal);
    letter-spacing: 0.5px;
}

.project-link-btn:hover {
    background: var(--color-accent);
    color: var(--color-bg-primary);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 217, 255, 0.35);
}

.project-link-btn--live {
    border-color: #00e676;
    color: #00e676;
    background: rgba(0, 230, 118, 0.06);
}

.project-link-btn--live:hover {
    background: #00e676;
    color: var(--color-bg-primary);
    box-shadow: 0 6px 20px rgba(0, 230, 118, 0.35);
}

/* Project overlay link */
.overlay-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
    padding: 0.5rem 1.25rem;
    background: var(--color-bg-primary);
    color: var(--color-accent);
    text-decoration: none;
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 700;
    font-family: var(--font-display);
    transition: all var(--transition-normal);
    border: 1.5px solid transparent;
}

.overlay-link:hover {
    background: var(--color-accent);
    color: var(--color-bg-primary);
    transform: scale(1.05);
}

/* Colored placeholder variants for new projects */
.project-placeholder--f1 {
    background: linear-gradient(135deg, #0d0d1a, #1a0a2e) !important;
}

.project-placeholder--f1 i {
    color: #ff1e00 !important;
    opacity: 0.7 !important;
}

.project-placeholder--sentiment {
    background: linear-gradient(135deg, #0a1a0d, #0d1a1a) !important;
}

.project-placeholder--sentiment i {
    color: #00e676 !important;
    opacity: 0.7 !important;
}

.project-placeholder--automation {
    background: linear-gradient(135deg, #1a1200, #0d1a1a) !important;
}

.project-placeholder--automation i {
    color: #ffd600 !important;
    opacity: 0.7 !important;
}

/* ===================================
   Skills Section
   =================================== */
.skills-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.skills-subtitle {
    font-size: 1.8rem;
    font-family: var(--font-display);
    color: var(--color-text-primary);
    margin-bottom: 2rem;
}

.skills-bars {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.skill-item {
    margin-bottom: 1.5rem;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.skill-name {
    font-weight: 500;
    color: var(--color-text-primary);
    font-size: 1rem;
}

.skill-percentage {
    color: var(--color-accent);
    font-family: var(--font-display);
    font-weight: 600;
}

.skill-bar {
    height: 8px;
    background: var(--color-bg-tertiary);
    border-radius: 10px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-dark));
    border-radius: 10px;
    width: 0;
    transition: width 1.5s ease;
    box-shadow: 0 0 10px var(--color-accent-glow);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1.5rem;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-normal);
    cursor: default;
}

.tech-item:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-glow);
    transform: translateY(-5px);
}

.tech-item i {
    font-size: 2.5rem;
    color: var(--color-accent);
}

.tech-item span {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    text-align: center;
    font-weight: 500;
}

.certifications {
    margin-top: 4rem;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.cert-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-normal);
}

.cert-item:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-glow);
    transform: translateX(5px);
}

.cert-item i {
    font-size: 2rem;
    color: var(--color-accent);
}

.cert-content h4 {
    color: var(--color-text-primary);
    font-size: 1rem;
    font-weight: 500;
}

/* ===================================
   Education Section
   =================================== */
.education {
    background: var(--color-bg-secondary);
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2.5rem;
}

.education-card {
    display: flex;
    gap: 2rem;
    padding: 2rem;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-normal);
}

.education-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-glow);
    transform: translateY(-5px);
}

.edu-icon {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    background: rgba(0, 217, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--color-accent);
}

.edu-icon i {
    font-size: 2rem;
    color: var(--color-accent);
}

.edu-content h3 {
    font-size: 1.4rem;
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
    font-family: var(--font-display);
}

.edu-content h4 {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: 0.75rem;
}

.edu-year {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: 1rem;
}

.edu-achievement {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(0, 217, 255, 0.1);
    border-radius: 20px;
    border: 1px solid var(--color-accent);
}

.edu-achievement i {
    color: var(--color-accent);
}

.edu-achievement span {
    color: var(--color-accent);
    font-weight: 600;
    font-size: 0.9rem;
}

/* ===================================
   Contact Section
   =================================== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
}

.contact-intro {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 2.5rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    align-items: start;
}

.contact-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: rgba(0, 217, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--color-accent);
}

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

.contact-text h4 {
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
    font-family: var(--font-display);
}

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

.contact-text a:hover {
    color: var(--color-accent-dark);
}

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

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

.social-links a {
    width: 50px;
    height: 50px;
    background: rgba(0, 217, 255, 0.1);
    border: 2px solid var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
    font-size: 1.2rem;
    transition: all var(--transition-normal);
}

.social-links a:hover {
    background: var(--color-accent);
    color: var(--color-bg-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 500;
    color: var(--color-text-primary);
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    padding: 1rem;
    background: var(--color-bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: all var(--transition-normal);
}

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

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

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--color-bg-secondary);
    padding: 3rem 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-content p {
    color: var(--color-text-secondary);
}

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

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--color-accent);
    color: var(--color-bg-primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-glow);
    z-index: 100;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 217, 255, 0.5);
}

/* ===================================
   Responsive Design
   =================================== */

/* Tablet */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .skills-content {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .hero-stats {
        gap: 2rem;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 100%;
        max-width: 300px;
        height: calc(100vh - 70px);
        background: rgba(10, 14, 23, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        transition: right var(--transition-normal);
        border-left: 1px solid rgba(255, 255, 255, 0.05);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 1.5rem;
    }
    
    .stat-item {
        flex: 1 1 calc(50% - 0.75rem);
        min-width: 120px;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-dot {
        left: 12px;
    }
    
    .timeline-item {
        padding-left: 60px;
    }
    
    .timeline-date {
        position: static;
        margin-bottom: 1rem;
    }
    
    .education-grid {
        grid-template-columns: 1fr;
    }
    
    .education-card {
        flex-direction: column;
        text-align: center;
    }
    
    .edu-icon {
        margin: 0 auto;
    }
    
    .tech-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    }
}

@media (max-width: 480px) {
    section {
        padding: var(--spacing-lg) 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-cta .btn {
        width: 100%;
        justify-content: center;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .about-highlights {
        gap: 1rem;
    }
    
    .highlight-item {
        padding: 1rem;
    }
}

/* Animation on scroll */
[data-aos] {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate {
    opacity: 1;
}

[data-aos="fade-up"] {
    transform: translateY(30px);
}

[data-aos="fade-up"].aos-animate {
    transform: translateY(0);
}

[data-aos="fade-right"] {
    transform: translateX(-30px);
}

[data-aos="fade-right"].aos-animate {
    transform: translateX(0);
}

[data-aos="zoom-in"] {
    transform: scale(0.9);
}

[data-aos="zoom-in"].aos-animate {
    transform: scale(1);
}