/* css for portfolio ...
         ==========================================================================
           COLOR PALETTES & THEMING (Linear & Vercel Inspired)
           ========================================================================== */
        :root {
            /* Common System Variables */
            --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
            --transition-fast: all 0.2s ease;
            --font-headings: 'Sora', sans-serif;
            --font-body: 'Inter', sans-serif;
            --max-width: 1200px;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            
            /* Light Mode Palette */
            --bg-color: #F8FAFC;
            --text-primary: #0F172A;
            --text-secondary: #475569;
            --accent: #3B82F6;
            --accent-glow: rgba(59, 130, 246, 0.15);
            --card-bg: rgba(255, 255, 255, 0.8);
            --card-hover-bg: #FFFFFF;
            --border-color: #E2E8F0;
            --nav-bg: rgba(248, 250, 252, 0.8);
            --glow-color: rgba(59, 130, 246, 0.3);
            --badge-bg: rgba(59, 130, 246, 0.08);
            --shadow-subtle: 0 4px 30px rgba(0, 0, 0, 0.03);
            --shadow-premium: 0 20px 40px rgba(0, 0, 0, 0.05);
        }

        /* Dark Mode Override */
        [data-theme="dark"] {
            --bg-color: #020617;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --accent: #60A5FA;
            --accent-glow: rgba(96, 165, 250, 0.15);
            --card-bg: rgba(15, 23, 42, 0.6);
            --card-hover-bg: #0F172A;
            --border-color: #1E293B;
            --nav-bg: rgba(2, 6, 23, 0.8);
            --glow-color: rgba(96, 165, 250, 0.25);
            --badge-bg: rgba(96, 165, 250, 0.1);
            --shadow-subtle: 0 4px 30px rgba(0, 0, 0, 0.3);
            --shadow-premium: 0 20px 40px rgba(0, 0, 0, 0.6);
        }

        /* ==========================================================================
           RESET & BASIC STYLING
           ========================================================================== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--bg-color);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            transition: background-color 0.5s ease, color 0.5s ease, border-color 0.5s ease;
        }

        /* Custom Scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-color);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: var(--radius-sm);
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--accent);
        }

        /* ==========================================================================
           REUSABLE UTILITIES & REVEAL EFFECTS
           ========================================================================== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 120px 0;
            position: relative;
        }

        .section-header {
            text-align: center;
            margin-bottom: 70px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-tag {
            font-family: var(--font-headings);
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 0.15em;
            color: var(--accent);
            font-weight: 700;
            margin-bottom: 12px;
            display: inline-block;
        }

        .section-title {
            font-family: var(--font-headings);
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
        }

        /* Reveal on scroll animations */
        .reveal-element {
            opacity: 0;
            transform: translateY(40px);
            transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .reveal-element.revealed {
            opacity: 1;
            transform: translateY(0);
        }

        /* Background Gradient Blur elements (Stripe/Linear style) */
        .gradient-blur {
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, var(--accent-glow) 0%, rgba(255,255,255,0) 70%);
            filter: blur(80px);
            z-index: -1;
            pointer-events: none;
            opacity: 0.7;
        }

        /* Premium Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            font-family: var(--font-headings);
            font-weight: 600;
            font-size: 0.95rem;
            text-decoration: none;
            cursor: pointer;
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .btn-primary {
            background-color: var(--accent);
            color: #FFFFFF !important;
            border: 1px solid var(--accent);
            box-shadow: 0 4px 20px var(--accent-glow);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 24px var(--accent-glow);
            filter: brightness(1.1);
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-color);
        }

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

        /* ==========================================================================
           HEADER / NAVIGATION
           ========================================================================== */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 80px;
            background-color: var(--nav-bg);
            -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: var(--transition-smooth);
        }

        .navbar.scrolled {
            height: 70px;
            box-shadow: var(--shadow-subtle);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Logo Area  */
        .logo {
            font-family: var(--font-headings);
            font-weight: 800;
            font-size: 1.4rem;
            color: var(--text-primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: -0.03em;
        }

        .logo span {
            color: var(--accent);
        }

        /* Nav links */
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
        }

        .nav-link {
            font-family: var(--font-headings);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            text-decoration: none;
            transition: var(--transition-fast);
            position: relative;
            padding: 8px 0;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--text-primary);
        }

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

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        /* Theme Toggle styles */
        .theme-toggle {
            background: none;
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            padding: 8px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition-fast);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
        }

        .theme-toggle:hover {
            background-color: var(--border-color);
            transform: scale(1.05);
        }

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

        /* Resume Nav Button - LINK RESUME PDF HERE */
        .btn-resume {
            padding: 10px 18px;
            font-size: 0.85rem;
        }

        /* Hamburger Menu */
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: space-between;
            width: 24px;
            height: 18px;
            background: none;
            border: none;
            cursor: pointer;
            z-index: 1001;
        }

        .hamburger span {
            display: block;
            width: 100%;
            height: 2px;
            background-color: var(--text-primary);
            transition: var(--transition-fast);
        }

        /* ==========================================================================
           HERO SECTION
           ========================================================================== */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: 120px;
            position: relative;
            overflow: hidden;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 60px;
            align-items: center;
        }

        .hero-badge {
            background-color: var(--badge-bg);
            border: 1px solid var(--border-color);
            padding: 6px 14px;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 24px;
        }

        .hero-badge i {
            animation: pulse 2s infinite;
        }

        .hero-title {
            font-family: var(--font-headings);
            font-size: 3.5rem;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.03em;
            margin-bottom: 24px;
        }

        .hero-title span {
            background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-description {
            font-size: 1.15rem;
            color: var(--text-secondary);
            margin-bottom: 36px;
            max-width: 580px;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 40px;
        }

        .hero-tag-item {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 6px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .hero-ctas {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* Hero Right Side Graphics */
        .hero-visual {
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        /* Update Profile Image */
        .hero-image-wrapper {
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-glow) 0%, var(--border-color) 100%);
            padding: 6px;
            box-shadow: var(--shadow-premium);
            position: relative;
            z-index: 2;
        }

        .hero-image-wrapper img {
            width: 100%;
            height: 100%;
            border-radius: 50%;
            object-fit: cover;
            background: var(--card-hover-bg);
        }

        /* Elegant SVG/CSS Graphic Fallback for Profile Image */
        .hero-image-placeholder {
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background-color: var(--card-hover-bg);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            border: 1px solid var(--border-color);
            position: relative;
        }

        /* Floating Tech Icons Animation */
        .floating-icon {
            position: absolute;
            background: var(--card-hover-bg);
            border: 1px solid var(--border-color);
            width: 54px;
            height: 54px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-premium);
            font-size: 1.5rem;
            z-index: 5;
            animation: float 6s ease-in-out infinite;
        }

        .floating-icon-1 { top: -10px; left: 10px; animation-delay: 0s; color: #E34F26; }
        .floating-icon-2 { top: 40px; right: -10px; animation-delay: 1.5s; color: #38BDF8; }
        .floating-icon-3 { bottom: 10px; left: -20px; animation-delay: 3s; color: #F7DF1E; }
        .floating-icon-4 { bottom: -20px; right: 20px; animation-delay: 4.5s; color: #61DAFB; }

        /* ==========================================================================
           ABOUT SECTION
           ========================================================================== */
        .about-grid {
            display: grid;
            grid-template-columns: 0.9fr 1.1fr;
            gap: 60px;
            align-items: center;
        }

        /* Update About Me Image Here */
        .about-image-card {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 16px;
            box-shadow: var(--shadow-premium);
            position: relative;
            overflow: hidden;
            aspect-ratio: 4/5;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .about-image-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            box-shadow: inset 0 0 100px var(--accent-glow);
            border-radius: var(--radius-lg);
            pointer-events: none;
        }

        .about-image-placeholder {
            width: 100%;
            height: 100%;
            border-radius: calc(var(--radius-lg) - 8px);
            background: linear-gradient(145deg, var(--card-bg), var(--border-color));
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .about-image-placeholder i {
            font-size: 5rem;
            color: var(--text-secondary);
            opacity: 0.3;
        }

        .about-heading {
            font-family: var(--font-headings);
            font-size: 2.25rem;
            font-weight: 800;
            margin-bottom: 24px;
            letter-spacing: -0.02em;
        }

        .about-text {
            color: var(--text-secondary);
            font-size: 1.05rem;
            margin-bottom: 40px;
            line-height: 1.7;
        }

        /* Stats Grid */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .stat-card {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: var(--radius-md);
            transition: var(--transition-smooth);
            text-align: left;
        }

        .stat-card:hover {
            transform: translateY(-5px);
            background-color: var(--card-hover-bg);
            border-color: var(--accent);
            box-shadow: var(--shadow-premium);
        }

        .stat-number {
            font-family: var(--font-headings);
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            margin-bottom: 4px;
        }

        .stat-label {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 2px;
        }

        .stat-desc {
            font-size: 0.8rem;
            color: var(--text-secondary);
        }

        /* ==========================================================================
           SKILLS SECTION
           ========================================================================== */
        .skills-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 20px;
        }

        .skill-card {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: var(--radius-md);
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .skill-card:hover {
            transform: translateY(-8px);
            background-color: var(--card-hover-bg);
            border-color: var(--accent);
            box-shadow: 0 10px 30px var(--accent-glow);
        }

        .skill-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
            transform: translateX(-100%);
            transition: transform 0.6s ease;
        }

        .skill-card:hover::before {
            transform: translateX(100%);
        }

        .skill-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 16px;
        }

        .skill-icon {
            font-size: 1.8rem;
            color: var(--accent);
            transition: var(--transition-fast);
        }

        .skill-card:hover .skill-icon {
            transform: scale(1.1);
        }

        .skill-title {
            font-family: var(--font-headings);
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .skill-desc {
            font-size: 0.8rem;
            color: var(--text-secondary);
            line-height: 1.4;
        }

        /* ==========================================================================
           PROJECTS SECTION
           ========================================================================== */
        .projects-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .project-card {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition-smooth);
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-subtle);
        }

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

        /* Customize Project Images here */
        .project-image-container {
            position: relative;
            aspect-ratio: 16/10;
            overflow: hidden;
            background: linear-gradient(135deg, var(--border-color), var(--card-bg));
            border-bottom: 1px solid var(--border-color);
        }

        .project-image-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition-smooth);
        }

        .project-card:hover .project-image-container img {
            transform: scale(1.05);
        }

        .project-image-fallback {
            width: 100%;
            height: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            position: relative;
            padding: 24px;
        }

        .project-image-fallback i {
            font-size: 3.5rem;
            margin-bottom: 12px;
            opacity: 0.5;
            color: var(--accent);
        }

        .project-image-fallback span {
            font-family: var(--font-headings);
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.1em;
            text-transform: uppercase;
        }

        .project-content {
            padding: 32px;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }

        .project-title {
            font-family: var(--font-headings);
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

        .project-desc {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-bottom: 24px;
            line-height: 1.6;
            flex-grow: 1;
        }

        .project-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 28px;
        }

        .project-tag {
            background-color: var(--badge-bg);
            color: var(--accent);
            border: 1px solid rgba(59, 130, 246, 0.1);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-sm);
        }

        .project-links {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .project-btn {
            font-size: 0.85rem;
            padding: 10px 18px;
        }

        /* ==========================================================================
           EDUCATION & EXPERIENCE SECTIONS (Structured layout)
           ========================================================================== */
        .timeline-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
        }

        .timeline-column-title {
            font-family: var(--font-headings);
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 40px;
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text-primary);
        }

        .timeline-column-title i {
            color: var(--accent);
        }

        .timeline-container {
            position: relative;
            border-left: 2px solid var(--border-color);
            padding-left: 32px;
            display: flex;
            flex-direction: column;
            gap: 40px;
        }

        .timeline-item {
            position: relative;
        }

        .timeline-dot {
            position: absolute;
            left: -42px;
            top: 6px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background-color: var(--bg-color);
            border: 4px solid var(--accent);
            transition: var(--transition-fast);
        }

        .timeline-item:hover .timeline-dot {
            background-color: var(--accent);
            transform: scale(1.2);
            box-shadow: 0 0 10px var(--accent-glow);
        }

        .timeline-card {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 28px;
            border-radius: var(--radius-md);
            transition: var(--transition-smooth);
        }

        .timeline-card:hover {
            transform: translateX(6px);
            border-color: var(--accent);
            box-shadow: var(--shadow-premium);
            background-color: var(--card-hover-bg);
        }

        .timeline-date {
            font-family: var(--font-headings);
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 8px;
            display: inline-block;
        }

        .timeline-title {
            font-family: var(--font-headings);
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .timeline-subtitle {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            margin-bottom: 12px;
        }

        .timeline-desc {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* ==========================================================================
           SERVICES SECTION
           ========================================================================== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 40px 32px;
            border-radius: var(--radius-lg);
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .service-card:hover {
            transform: translateY(-8px);
            border-color: var(--accent);
            box-shadow: var(--shadow-premium);
            background-color: var(--card-hover-bg);
        }

        .service-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), transparent);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }

        .service-card:hover::after {
            transform: scaleX(1);
        }

        .service-icon-wrapper {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-sm);
            background-color: var(--badge-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            border: 1px solid rgba(59, 130, 246, 0.1);
        }

        .service-icon-wrapper i {
            font-size: 1.6rem;
            color: var(--accent);
            transition: var(--transition-fast);
        }

        .service-card:hover .service-icon-wrapper i {
            transform: rotate(5deg) scale(1.1);
        }

        .service-title {
            font-family: var(--font-headings);
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .service-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ==========================================================================
           CONTACT SECTION
           ========================================================================== */
        .contact-grid {
            display: grid;
            grid-template-columns: 0.85fr 1.15fr;
            gap: 60px;
        }

        .contact-info-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .contact-item-card {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: flex-start;
            gap: 18px;
            text-decoration: none;
            color: inherit;
            transition: var(--transition-smooth);
        }

        .contact-item-card:hover {
            transform: translateX(6px);
            border-color: var(--accent);
            background-color: var(--card-hover-bg);
            box-shadow: var(--shadow-premium);
        }

        .contact-item-icon {
            width: 46px;
            height: 46px;
            border-radius: var(--radius-sm);
            background-color: var(--badge-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--accent);
            font-size: 1.25rem;
        }

        .contact-item-title {
            font-family: var(--font-headings);
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 2px;
        }

        .contact-item-value {
            font-size: 0.85rem;
            color: var(--text-secondary);
            word-break: break-all;
        }

        /* Form Glassmorphism design */
        .contact-form-card {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-premium);
            -webkit-backdrop-filter: blur(10px);
            backdrop-filter: blur(10px);
        }

        .form-group-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }

        .form-group {
            margin-bottom: 20px;
            display: flex;
            flex-direction: column;
        }

        .form-label {
            font-family: var(--font-headings);
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .form-input {
            background-color: rgba(0, 0, 0, 0.02);
            border: 1px solid var(--border-color);
            padding: 14px 18px;
            border-radius: var(--radius-sm);
            font-family: var(--font-body);
            font-size: 0.95rem;
            color: var(--text-primary);
            transition: var(--transition-fast);
        }

        [data-theme="dark"] .form-input {
            background-color: rgba(255, 255, 255, 0.02);
        }

        .form-input:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px var(--accent-glow);
            background-color: var(--card-hover-bg);
        }

        textarea.form-input {
            resize: vertical;
            min-height: 130px;
        }

        .form-btn-submit {
            width: 100%;
            border: none;
        }

        /* Loading spinner styled inside submit button */
        .submit-loader {
            display: none;
            width: 18px;
            height: 18px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            border-top-color: white;
            animation: spin 0.8s linear infinite;
        }

        /* Custom notifications toast element */
        .toast {
            position: fixed;
            bottom: -100px;
            right: 24px;
            background-color: var(--card-hover-bg);
            border: 1px solid var(--accent);
            padding: 16px 24px;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-premium);
            z-index: 2000;
            display: flex;
            align-items: center;
            gap: 12px;
            transition: bottom 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        .toast.show {
            bottom: 24px;
        }

        .toast-icon {
            color: #10B981;
            font-size: 1.25rem;
        }

        .toast-text {
            font-family: var(--font-headings);
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-primary);
        }

        /* ==========================================================================
           FOOTER
           ========================================================================== */
        .footer {
            border-top: 1px solid var(--border-color);
            background-color: var(--bg-color);
            padding: 80px 0 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 60px;
            margin-bottom: 50px;
        }

        .footer-brand-title {
            font-family: var(--font-headings);
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .footer-desc {
            color: var(--text-secondary);
            font-size: 0.95rem;
            max-width: 440px;
            line-height: 1.6;
        }

        .footer-socials {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .footer-social-link {
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            background-color: var(--card-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 1.1rem;
            text-decoration: none;
            transition: var(--transition-fast);
        }

        .footer-social-link:hover {
            background-color: var(--accent);
            color: #FFFFFF !important;
            border-color: var(--accent);
            transform: translateY(-3px);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 30px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
        }

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

        .footer-back-to-top {
            font-family: var(--font-headings);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition-fast);
        }

        .footer-back-to-top:hover {
            transform: translateY(-2px);
        }

        /* ==========================================================================
           KEYFRAMES / ANIMATIONS
           ========================================================================== */
        @keyframes float {
            0%, 100% { transform: translateY(0) rotate(0deg); }
            50% { transform: translateY(-10px) rotate(3deg); }
        }

        @keyframes pulse {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.92); }
        }

        @keyframes spin {
            100% { transform: rotate(360deg); }
        }

        /* ==========================================================================
           RESPONSIVE BREAKPOINTS (Mobile-First approach to tablet/desktop styling)
           ========================================================================== */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.8rem;
            }
            .hero-grid {
                gap: 40px;
            }
            .about-grid {
                gap: 40px;
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 80px 0;
            }
            
            /* Responsive Nav Bar */
            .hamburger {
                display: flex;
            }
            
            .nav-menu {
                position: fixed;
                top: 80px;
                left: 100%;
                width: 100%;
                height: calc(100vh - 80px);
                background-color: var(--bg-color);
                flex-direction: column;
                align-items: center;
                justify-content: center;
                gap: 40px;
                transition: left 0.4s cubic-bezier(0.16, 1, 0.3, 1);
                z-index: 999;
                padding-bottom: 80px;
                box-shadow: inset 0 20px 40px rgba(0,0,0,0.05);
            }

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

            .nav-actions {
                margin-right: 40px;
            }

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

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

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

            /* Responsive Hero */
            .hero-grid {
                grid-template-columns: 1fr;
                text-align: center;
                gap: 50px;
            }

            .hero-visual {
                order: -1;
            }

            .hero-description {
                margin-left: auto;
                margin-right: auto;
            }

            .hero-tags {
                justify-content: center;
            }

            .hero-ctas {
                justify-content: center;
            }

            /* Responsive About */
            .about-grid {
                grid-template-columns: 1fr;
                gap: 50px;
            }

            .about-image-card {
                max-width: 360px;
                margin: 0 auto;
            }

            /* Responsive Projects */
            .projects-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            /* Responsive Timeline */
            .timeline-grid {
                grid-template-columns: 1fr;
                gap: 50px;
            }

            /* Responsive Services */
            .services-grid {
                grid-template-columns: 1fr;
            }

            /* Responsive Contact */
            .contact-grid {
                grid-template-columns: 1fr;
                gap: 50px;
            }

            .form-group-row {
                grid-template-columns: 1fr;
                gap: 0;
            }

            /* Responsive Footer */
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            
            .footer-socials {
                justify-content: flex-start;
            }
        }