/* Import Google Font */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600;700&display=swap');

/* CSS Variables */
:root {
    /* HSL base tones */
    --primary-hsl: 250, 84%, 66%;
    --primary-gradient-hsl-end: 238, 83%, 66%;
    
    --bg-hsl: 222, 30%, 7%;
    --bg-sec-hsl: 222, 31%, 5%;
    --card-hsl: 223, 28%, 15%;
    --card-hover-hsl: 223, 28%, 19%;
    --text-hsl: 210, 100%, 98%;
    --text-sec-hsl: 215, 25%, 72%;
    --text-muted-hsl: 217, 18%, 47%;
    
    --background-color: HSL(var(--bg-hsl));
    --background-secondary: HSL(var(--bg-sec-hsl));
    --card-color: HSL(var(--card-hsl));
    --card-hover: HSL(var(--card-hover-hsl));
    --primary-color: HSL(var(--primary-hsl));
    --primary-gradient: linear-gradient(135deg, HSL(var(--primary-hsl)) 0%, HSL(var(--primary-gradient-hsl-end)) 100%);
    --accent-gradient: linear-gradient(135deg, #e5e7eb 0%, #9ca3af 100%);
    --blue-gradient: linear-gradient(135deg, #cbd5e1 0%, #94a3b8 100%);
    --green-gradient: linear-gradient(135deg, #2dd4bf 0%, #10b981 100%);
    --text-color: HSL(var(--text-hsl));
    --text-secondary: HSL(var(--text-sec-hsl));
    --text-muted: HSL(var(--text-muted-hsl));
    
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 25px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 50px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 35px rgba(139, 92, 246, 0.3);
    --transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
    
    --card-inner-bg: rgba(255, 255, 255, 0.03);
    --border-light: rgba(255, 255, 255, 0.05);
    --nav-bg: rgba(26, 31, 53, 0.8);
    --nav-scrolled: rgba(26, 31, 53, 0.95);
}


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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
    width: 100%;
}

body {
    font-family: 'Inter', 'Poppins', sans-serif;
    background: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    width: 100%;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Section Styling */
section {
    padding: 5rem 0;
    position: relative;
}

section h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

@media (max-width: 768px) {
    section h2 {
        font-size: 2rem;
    }
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 3rem;
    font-weight: 400;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 0.5rem 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar.scrolled {
    background: var(--nav-scrolled);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md);
    border-bottom: 1px solid var(--border-light);
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-color);
    text-decoration: none;
    font-family: 'Poppins', sans-serif;
}

.logo span {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-menu li a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
}

.nav-menu li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: width 0.3s ease;
}

.nav-menu li a:hover {
    color: var(--text-color);
}

.nav-menu li a:hover::after {
    width: 100%;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-color);
    border-radius: 3px;
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: var(--background-color);
    padding: 2rem;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.gradient-circle {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
}

.circle-1 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.6), rgba(99, 102, 241, 0.6));
    top: -10%;
    left: -10%;
    animation-delay: 0s;
}

.circle-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.5), rgba(45, 212, 191, 0.5));
    bottom: -10%;
    right: -10%;
    animation-delay: 5s;
}

.circle-3 {
    width: 350px;
    height: 350px;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.4), rgba(14, 165, 233, 0.4));
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(20px, -20px) scale(1.05); }
    50% { transform: translate(30px, -30px) scale(1.1); }
    75% { transform: translate(-20px, 20px) scale(0.9); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
}

.hero-greeting {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-weight: 400;
}

.hero-content h1 {
    font-size: 4.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero .highlight {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.typewriter {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-weight: 500;
    min-height: 2rem;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.btn {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary-gradient);
    color: var(--text-color);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(102, 126, 234, 0.6);
}

.btn-secondary {
    background: transparent;
    color: var(--text-color);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-3px);
}

.btn-download {
    background: var(--green-gradient);
    color: var(--background-color);
}

.btn-download:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(67, 233, 123, 0.4);
}

.btn-linkedin {
    background: #0077b5;
    color: #fff;
    border: none;
    box-shadow: 0 0 15px rgba(0, 119, 181, 0.3);
}

.btn-linkedin:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 119, 181, 0.5);
    background: #0088cc;
}

.hero-socials {
    display: flex;
    gap: 2rem;
    justify-content: center;
}

.hero-socials a {
    width: 55px;
    height: 55px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-decoration: none;
    font-size: 1.4rem;
}

/* Branded Hover Effects for Hero Socials */
.hero-socials a:hover {
    transform: translateY(-8px) scale(1.1);
    color: #fff;
    border-color: transparent;
}

.hero-socials a[href*="github"]:hover {
    background: #333;
    box-shadow: 0 0 20px rgba(51, 51, 51, 0.4);
}

.hero-socials a[href*="linkedin"]:hover {
    background: #0077b5;
    box-shadow: 0 0 20px rgba(0, 119, 181, 0.4);
}

.hero-socials a[href*="instagram"]:hover {
    background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
    box-shadow: 0 0 20px rgba(220, 39, 67, 0.4);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    gap: 5px;
    opacity: 0.5;
}

.scroll-indicator span {
    width: 2px;
    height: 15px;
    background: var(--text-secondary);
    animation: scroll 1.5s infinite;
}

.scroll-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}

.scroll-indicator span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes scroll {
    0%, 100% { opacity: 0.3; transform: scaleY(0.5); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    align-items: start;
    gap: 4rem;
}

.profile-section {
    position: relative;
}

.profile-image {
    position: relative;
    width: 320px;
    max-width: 100%;
    margin: 0 auto;
}

.profile-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    display: block;
    border: 1px solid var(--primary-color);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    filter: brightness(1.05) contrast(1.02);
}

.profile-image:hover img {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(139, 92, 246, 0.4);
}

.profile-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.profile-image:hover .profile-overlay {
    opacity: 0.9;
}

.profile-overlay i {
    font-size: 2rem;
    color: var(--text-color);
}

.about-text h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    background: var(--blue-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-text p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 1rem;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    margin: 2.5rem 0;
}

.stat-item {
    background: var(--card-color);
    padding: 1.5rem;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.stat-item:hover {
    background: var(--card-hover);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.stat-item i {
    font-size: 2rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-item h4 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
    color: var(--text-color);
}

.stat-item p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin: 0;
}

/* Skills Section */
.skills-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
    gap: 2.5rem;
}

.skill-category {
    background: var(--card-color);
    padding: 2rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.skill-category:hover {
    background: var(--card-hover);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.skill-category h3 {
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.skill-category h3 i {
    font-size: 1.5rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.skill-box {
    background: var(--card-inner-bg);
    border: 1px solid var(--border-light);
    border-radius: 14px;
    padding: 1.2rem 0.8rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.skill-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, transparent 60%);
    opacity: 0;
    transition: var(--transition);
    transform: scale(0.5);
    z-index: 0;
}

.skill-box:hover::before {
    opacity: 1;
    transform: scale(1);
}

.skill-box:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(139, 92, 246, 0.4);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3), inset 0 0 20px rgba(139, 92, 246, 0.1);
}

/* Skill Icons New Logic: Monochrome to Brand Color on Hover */
.skill-icon {
    font-size: 2.5rem;
    color: var(--text-muted); /* Uniform soft color by default */
    transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 0 5px rgba(255, 255, 255, 0.05));
}

.skill-box:hover .skill-icon {
    transform: scale(1.15) translateY(-5px);
}

/* Brand colors on hover */
.skill-box:hover .fa-html5 { color: #E34F26; filter: drop-shadow(0 0 12px rgba(227, 79, 38, 0.6)); }
.skill-box:hover .fa-css3-alt { color: #1572B6; filter: drop-shadow(0 0 12px rgba(21, 114, 182, 0.6)); }
.skill-box:hover .fa-js { color: #F7DF1E; filter: drop-shadow(0 0 12px rgba(247, 223, 30, 0.6)); }
.skill-box:hover .fa-react { color: #61DAFB; filter: drop-shadow(0 0 12px rgba(97, 218, 251, 0.6)); }
.skill-box:hover .fa-bootstrap { color: #7952B3; filter: drop-shadow(0 0 12px rgba(121, 82, 179, 0.6)); }
.skill-box:hover .fa-node-js { color: #339933; filter: drop-shadow(0 0 12px rgba(51, 153, 51, 0.6)); }
.skill-box:hover .fa-database { color: #47A248; filter: drop-shadow(0 0 12px rgba(71, 162, 72, 0.6)); }
.skill-box:hover .fa-java { color: #007396; filter: drop-shadow(0 0 12px rgba(0, 115, 150, 0.6)); }
.skill-box:hover .fa-network-wired { color: #00d2ff; filter: drop-shadow(0 0 12px rgba(0, 210, 255, 0.6)); }
.skill-box:hover .fa-git-alt { color: #F05032; filter: drop-shadow(0 0 12px rgba(240, 80, 50, 0.6)); }
.skill-box:hover .fa-github { color: #ffffff; filter: drop-shadow(0 0 12px rgba(255, 255, 255, 0.6)); }
.skill-box:hover .fa-code { color: #007ACC; filter: drop-shadow(0 0 12px rgba(0, 122, 204, 0.6)); }
.skill-box:hover .fa-python { color: #3776AB; filter: drop-shadow(0 0 12px rgba(55, 118, 171, 0.6)); }

.skill-name {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    z-index: 1;
    transition: var(--transition);
    text-align: center;
}

.skill-box:hover .skill-name {
    color: var(--text-color);
}

/* AI & Data Skills Section */
.ai-skills {
    background: var(--background-secondary);
}

.text-green {
    color: #10b981 !important;
    background: none !important;
    -webkit-text-fill-color: #10b981 !important;
}

.ai-skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.ai-skill-card {
    background: var(--card-inner-bg);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.ai-skill-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: #10b981;
    transition: var(--transition);
}

.ai-skill-card:hover {
    transform: translateY(-10px);
    background: rgba(16, 185, 129, 0.05);
    border-color: rgba(16, 185, 129, 0.5);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3), 0 0 20px rgba(16, 185, 129, 0.15);
}

.ai-skill-card:hover::before {
    width: 100%;
    opacity: 0.05;
}

.ai-icon-wrapper {
    width: 60px;
    height: 60px;
    background: rgba(16, 185, 129, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(16, 185, 129, 0.2);
    transition: var(--transition);
}

.ai-skill-card:hover .ai-icon-wrapper {
    background: #10b981;
    border-color: #10b981;
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 0 15px rgba(16, 185, 129, 0.5);
}

.ai-icon-wrapper i {
    font-size: 1.8rem;
    color: #10b981;
    transition: var(--transition);
}

.ai-skill-card:hover .ai-icon-wrapper i {
    color: #ffffff;
}

.ai-skill-card h3 {
    color: #ffffff;
    font-size: 1.4rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.ai-skill-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
    transition: var(--transition);
}

.ai-skill-card:hover p {
    color: rgba(255, 255, 255, 0.9);
}

/* Projects Section */
.project-filters {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.7rem 1.8rem;
    background: var(--card-color);
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
}

.filter-btn:hover {
    background: var(--card-hover);
    color: var(--text-color);
}

.filter-btn.active {
    background: var(--primary-gradient);
    color: var(--text-color);
    border-color: transparent;
    box-shadow: var(--shadow-glow);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--card-color);
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid var(--border-light);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 0 0 20px rgba(139, 92, 246, 0.1);
    border-color: rgba(139, 92, 246, 0.3);
}

.project-image {
    position: relative;
    overflow: hidden;
    height: 240px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(240, 244, 255, 1));
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    filter: drop-shadow(0 10px 15px rgba(0, 0, 0, 0.1));
}

.project-card:hover .project-image img {
    transform: scale(1.1) rotate(2deg);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    opacity: 0;
    transition: var(--transition);
}

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

.overlay-btn {
    width: 50px;
    height: 50px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    font-size: 1.2rem;
    transition: var(--transition);
}

.overlay-btn:hover {
    transform: scale(1.2);
    box-shadow: var(--shadow-glow);
}

.project-info {
    padding: 2rem;
}

.project-info h3 {
    font-size: 1.4rem;
    margin-bottom: 0.8rem;
    color: var(--text-color);
}

.project-info p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin: 1.5rem 0;
}

.tech-stack span {
    padding: 0.5rem 1.2rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    text-transform: uppercase;
}

/* Violet Theme Tech Stack */
.tech-stack-violet span {
    background: rgba(139, 92, 246, 0.1);
    color: #a78bfa;
    border: 1px solid rgba(139, 92, 246, 0.2);
}

.project-card:hover .tech-stack-violet span {
    background: rgba(139, 92, 246, 0.2);
    border-color: rgba(139, 92, 246, 0.4);
    color: #c4b5fd;
}

/* Green Theme Tech Stack (Agriculture/Environment) */
.tech-stack-green span {
    background: rgba(16, 185, 129, 0.1);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.project-card:hover .tech-stack-green span {
    background: rgba(16, 185, 129, 0.2);
    border-color: rgba(16, 185, 129, 0.4);
    color: #6ee7b7;
}

/* Blue Theme Tech Stack (Tools/Utilities) */
.tech-stack-blue span {
    background: rgba(14, 165, 233, 0.1);
    color: #38bdf8;
    border: 1px solid rgba(14, 165, 233, 0.2);
}

.project-card:hover .tech-stack-blue span {
    background: rgba(14, 165, 233, 0.2);
    border-color: rgba(14, 165, 233, 0.4);
    color: #7dd3fc;
}

/* Orange Theme Tech Stack (E-Commerce/Business) */
.tech-stack-orange span {
    background: rgba(245, 158, 11, 0.1);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.project-card:hover .tech-stack-orange span {
    background: rgba(245, 158, 11, 0.2);
    border-color: rgba(245, 158, 11, 0.4);
    color: #fcd34d;
}

.btn-demo {
    background: var(--primary-gradient);
    color: var(--text-color) !important;
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
    transition: all 0.3s ease;
}

.btn-demo:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.5);
    color: #fff !important;
}

.project-links {
    display: flex;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.project-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.project-links a:hover {
    color: var(--text-color);
    transform: translateX(3px);
}

/* Green Theme additions for Projects Section */
.tech-stack.tech-stack-green span {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.project-links .btn-demo, .project-links .btn-github {
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-decoration: none;
}

.project-links .btn-demo {
    background: var(--primary-gradient);
    color: white !important;
    border: none;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.project-links .btn-demo:hover {
    transform: translateY(-3px) !important;
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.5);
}

.project-links .btn-github {
    background: transparent;
    color: white !important;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.project-links .btn-github:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
    transform: translateY(-3px) !important;
}

/* Experience Section - Timeline */
/* Experience Section - Timeline Continued */
.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 2px;
    background: rgba(255, 255, 255, 0.1);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1px;
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    width: 50%;
}

.timeline-item::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 200px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

/* Timeline Dot Replacement */
.timeline-item::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--background-color);
    border: 3px solid #818cf8;
    border-radius: 50%;
    z-index: 2;
    top: 25px;
    box-shadow: 0 0 15px rgba(129, 140, 248, 0.6);
}

.timeline-item:nth-child(odd) {
    left: 0;
    text-align: right;
}

.timeline-item:nth-child(even) {
    left: 50%;
    text-align: left;
}

.timeline-item:nth-child(odd)::before {
    right: -10px;
}

.timeline-item:nth-child(even)::before {
    left: -10px;
}

.timeline-content {
    padding: 2rem;
    background: var(--card-color);
    border-radius: 15px;
    border: 1px solid var(--border-light);
    transition: var(--transition);
}

.timeline-content:hover {
    transform: translateY(-5px);
    background: var(--card-hover);
    border-color: rgba(129, 140, 248, 0.3);
}

.timeline-content h3 {
    color: #818cf8;
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
}

.timeline-content .company {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 0.3rem;
}

.timeline-content .date {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.timeline-content p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
}

.exp-description {
    max-height: 4.8em; /* Roughly 3 lines */
    overflow: hidden;
    transition: max-height 0.5s ease-in-out;
    position: relative;
    margin-bottom: 1.5rem;
}

.exp-description::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 30%;
    height: 1.6em;
    background: linear-gradient(to right, transparent, #1a1f2e);
    pointer-events: none;
    transition: opacity 0.3s;
}

.exp-description.expanded {
    max-height: 500px; /* Large enough for full text */
}

.exp-description.expanded::after {
    opacity: 0;
}

.btn-view-more {
    display: inline-block;
    padding: 0.8rem 2rem;
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    color: var(--text-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
}

.btn-view-more:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

@media (max-width: 768px) {
    .timeline::after {
        left: 31px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
        text-align: left !important;
    }
    
    .timeline-item::before {
        left: 21px !important;
    }
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 3rem;
}

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

.contact-form input,
.contact-form textarea {
    padding: 1rem 1.5rem;
    background: var(--card-color);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    color: var(--text-color);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(139, 92, 246, 0.2);
}

.contact-form button {
    padding: 1rem 2rem;
    background: var(--primary-gradient);
    color: var(--text-color);
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.contact-form button:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.contact-form button:disabled {
    background: var(--text-muted);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
    opacity: 0.6;
}

#responseMsg {
    margin-top: 1rem;
    font-weight: 500;
    text-align: center;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--card-color);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.info-item:hover {
    transform: translateX(10px);
    background: var(--card-hover);
}

.info-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(139, 92, 246, 0.1);
    border-radius: 50%;
}

/* Footer & Other UI Elements */
footer {
    padding: 40px 0;
    background: var(--background-secondary);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-section h3, .footer-section h4 {
    margin-bottom: 1.5rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.8rem;
}

.footer-section ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-icons {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2.5rem;
}

.footer-icons a {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-decoration: none;
    font-size: 1.2rem;
}

/* Individual Brand Hover Effects */
.footer-icons a:hover {
    transform: translateY(-8px) scale(1.1);
    color: #fff;
    border-color: transparent;
}

/* GitHub Hover */
.footer-icons a[href*="github"]:hover {
    background: #333;
    box-shadow: 0 0 20px rgba(51, 51, 51, 0.4);
}

/* LinkedIn Hover */
.footer-icons a[href*="linkedin"]:hover {
    background: #0077b5;
    box-shadow: 0 0 20px rgba(0, 119, 181, 0.4);
}

/* Instagram Hover */
.footer-icons a[href*="instagram"]:hover {
    background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
    box-shadow: 0 0 20px rgba(220, 39, 67, 0.4);
}

.footer-bottom {
    text-align: center;
    padding: 3rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 992px) {
    .about-content, .contact-content, .footer-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .projects {
        background: var(--background-secondary);
    }
    .hero-content h1 {
        font-size: 3rem;
    }
    .about-text {
        text-align: center;
    }
    .about-buttons {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 0.8rem 0;
    }
    .logo {
        font-size: 1.5rem;
    }
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 0;
        flex-direction: column;
        background: rgba(8, 10, 15, 0.98);
        backdrop-filter: blur(20px);
        width: 100%;
        height: 100vh;
        justify-content: center;
        align-items: center;
        text-align: center;
        transition: 0.5s cubic-bezier(0.77,0.2,0.05,1.0);
        padding: 2rem 0;
        z-index: 999;
    }
    .nav-menu.active {
        left: 0;
    }
    .nav-menu li {
        margin: 1.2rem 0;
    }
    .nav-menu li a {
        font-size: 1.3rem;
    }
    .hamburger {
        display: flex;
        z-index: 1001;
    }
    .hero {
        padding: 4rem 1rem;
    }
    .hero-content h1 {
        font-size: 2rem;
        word-break: break-word;
    }
    .hero-greeting {
        font-size: 1rem;
    }
    .typewriter {
        font-size: 1.1rem;
    }
    .hero-description {
        font-size: 1rem;
        padding: 0 1rem;
    }
    
    .about-text h3 {
        font-size: 1.5rem;
    }
    .profile-image {
        width: 240px;
    }

    .timeline::after {
        left: 31px;
    }
    .timeline-item {
        width: 100%;
        padding-left: 60px;
        padding-right: 1rem;
        text-align: left !important;
    }
    .timeline-item::after {
        left: 31px;
    }
    .timeline-item::before {
        left: 21px !important;
    }
    .timeline-item:nth-child(even) {
        left: 0;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.8rem;
    }
    .about-text h3 {
        font-size: 1.3rem;
    }
    .btn {
        width: 100%;
        justify-content: center;
        padding: 0.8rem 1.2rem;
    }
    .info-item p {
        word-break: break-all;
    }
    .contact-info {
        gap: 1rem;
    }
    .info-item {
        padding: 1rem;
        gap: 1rem;
    }
    .info-item i {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    .info-item h3 {
        font-size: 1.1rem;
    }
    .contact-form input, .contact-form textarea {
        padding: 0.8rem 1rem;
    }
    .hero-socials {
        gap: 0.8rem;
    }
    .hero-socials a {
        width: 42px;
        height: 42px;
        font-size: 1.1rem;
    }
    .section-subtitle {
        font-size: 0.95rem;
    }
    .stat-item h4 {
        font-size: 1.5rem;
    }
    .skill-category, .ai-skill-card, .project-info, .timeline-content, .info-item, .cert-info {
        padding: 1.2rem 1rem;
    }
    .project-image, .certificate-image {
        height: 180px;
    }
    .skills-grid {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
        gap: 0.8rem;
    }
    .projects-grid, .certificates-grid {
        gap: 1.5rem;
    }
    .footer-bottom {
        padding: 2rem 0;
    }
    .footer-icons {
        gap: 1rem;
    }
    .footer-icons a {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}

.scroll-to-top {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 45px;
    height: 45px;
    background: var(--primary-gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

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

.scroll-to-top:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: var(--shadow-glow);
}

/* Certificates Section */
.certificates {
    padding: 100px 0;
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.certificate-card {
    background: var(--card-color);
    padding: 0; /* Remove padding for image layout */
    border-radius: 20px;
    border: 1px solid var(--border-light);
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.certificate-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.certificate-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #000;
    transition: var(--transition);
}

.certificate-card:hover .certificate-image img {
    transform: scale(1.1);
}

.certificate-card:hover {
    transform: translateY(-10px);
    background: var(--card-hover);
    border-color: rgba(139, 92, 246, 0.3);
    box-shadow: var(--shadow-lg);
}

.cert-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.certificate-card:hover .cert-overlay {
    opacity: 1;
}

.cert-info {
    padding: 1.5rem;
    flex-grow: 1;
}

.cert-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.certificate-card h3 {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.issuer {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.certificate-card .date {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.cert-link {
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    background: rgba(255, 255, 255, 0.05);
}

.cert-link:hover {
    background: var(--primary-gradient);
    color: var(--text-color);
    transform: scale(1.05);
}


/* ==========================================================================
   Scroll Reveal Animations
   ========================================================================== */
.reveal {
    position: relative;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   Certificates Page: Filter Tabs & Gallery Styles
   ========================================================================== */
.filter-container {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    border: 1px solid var(--border-light);
    background: var(--card-color);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
    background: var(--primary-gradient);
    color: #ffffff;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

/* Certificate Cards Filter Transition */
.certificate-card {
    transition: opacity 0.4s ease, transform 0.4s ease, display 0.4s ease;
}

.certificate-card.hidden {
    display: none;
    opacity: 0;
    transform: scale(0.95) translateY(20px);
}

/* ==========================================================================
   Lightbox Image Modal
   ========================================================================== */
.lightbox-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(8, 10, 15, 0.95);
    backdrop-filter: blur(15px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}


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

.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 85%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-img {
    max-width: 100%;
    max-height: 80vh;
    border-radius: 8px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-lg);
    transform: scale(0.9);
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

.lightbox-close {
    position: absolute;
    top: -50px;
    right: 0;
    background: transparent;
    border: none;
    color: var(--text-color);
    font-size: 2rem;
    cursor: pointer;
    transition: var(--transition);
}

.lightbox-close:hover {
    color: var(--primary-color);
    transform: scale(1.1);
}