:root {
    /* Color Palette - Dark Mode Defaults */
    --primary-bg: #0a0a0a;
    --secondary-bg: #0f172a;
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
    --glass-bg: rgba(15, 23, 42, 0.6);
    --glass-border: rgba(255, 255, 255, 0.08);
    --nav-bg: rgba(10, 10, 10, 0.8);
    
    --font-main: 'Inter', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --primary-bg: #f8fafc;
    --secondary-bg: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(0, 0, 0, 0.08);
    --nav-bg: rgba(248, 250, 252, 0.85);
}

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

html {
    scroll-behavior: smooth;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.section-padding {
    padding: 100px 0;
}

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

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

/* Typography & Utilities */
h1 { font-size: 3.5rem; line-height: 1.1; margin-bottom: 20px; font-weight: 800; letter-spacing: -1px; }
h2 { font-size: 2.5rem; margin-bottom: 20px; font-weight: 700; letter-spacing: -0.5px; }
h3 { font-size: 1.5rem; margin-bottom: 15px; font-weight: 600; }
p { color: var(--text-secondary); margin-bottom: 20px; font-size: 1.05rem; }

.accent-text { color: var(--accent-blue); }
.gradient-text {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.eyebrow {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--accent-blue);
    margin-bottom: 15px;
    display: inline-block;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-family: var(--font-main);
    text-align: center;
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    color: #fff;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.5);
}
.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(5px);
}
.btn-outline:hover {
    background: var(--glass-border);
    border-color: var(--accent-purple);
}
.w-100 { width: 100%; }

/* Glassmorphism Classes */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: var(--transition);
}
.glass-card:hover {
    transform: translateY(-5px);
    border-color: rgba(139, 92, 246, 0.4);
    box-shadow: 0 15px 40px rgba(0,0,0,0.2);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0; left: 0; width: 100%;
    padding: 20px 0;
    z-index: 1000;
    transition: var(--transition);
}
.navbar.scrolled {
    padding: 15px 0;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
}
.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo { font-size: 1.5rem; font-weight: 800; color: var(--text-primary); }
.nav-links { display: flex; gap: 30px; }
.nav-links a { color: var(--text-primary); font-weight: 500; transition: var(--transition); font-size: 0.95rem; }
.nav-links a:hover { color: var(--accent-blue); }
.menu-btn { display: none; background: none; border: none; color: var(--text-primary); font-size: 1.5rem; cursor: pointer; }

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    bottom: 30px; right: 30px;
    width: 50px; height: 50px;
    border-radius: 50%;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    cursor: pointer;
    z-index: 999;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}
.theme-toggle:hover {
    transform: scale(1.1);
    border-color: var(--accent-blue);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px;
    overflow: hidden;
}
.hero-bg-glow {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 800px; height: 800px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, rgba(10, 10, 10, 0) 70%);
    z-index: -1;
    pointer-events: none;
}
[data-theme="light"] .hero-bg-glow {
    background: radial-gradient(circle, rgba(139, 92, 246, 0.08) 0%, rgba(248, 250, 252, 0) 70%);
}
.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}
.hero-ctas { display: flex; gap: 15px; margin-top: 40px; }

/* Abstract 3D shape simulation */
.hero-visual {
    position: relative;
    height: 400px;
    display: flex; justify-content: center; align-items: center;
}
.abstract-shape {
    position: relative;
    width: 300px; height: 300px;
    perspective: 1000px;
}
.bar {
    position: absolute;
    bottom: 0;
    width: 60px;
    background: linear-gradient(to top, var(--accent-blue), var(--accent-purple));
    border-radius: 8px 8px 0 0;
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.4);
}
.bar-1 { height: 150px; left: 40px; animation: float 6s ease-in-out infinite; }
.bar-2 { height: 250px; left: 120px; animation: float 6s ease-in-out infinite 1s; }
.bar-3 { height: 100px; left: 200px; animation: float 6s ease-in-out infinite 2s; }
.glow-orb {
    position: absolute; width: 150px; height: 150px;
    border-radius: 50%; background: var(--accent-purple);
    filter: blur(60px); opacity: 0.5;
    top: 20px; left: 80px;
    animation: pulse 8s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}
@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.4; }
    50% { transform: scale(1.2); opacity: 0.7; }
}

/* About Section */
.about-container { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.portrait-placeholder {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
}
.portrait-placeholder img { width: 100%; height: auto; display: block; filter: grayscale(20%); }
.glass-badge {
    position: absolute;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 10px 20px;
    border-radius: 50px;
    font-weight: 600;
    color: #fff;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}
.badge-1 { top: 30px; left: -20px; animation: float 5s ease-in-out infinite; }
.badge-2 { bottom: 40px; right: -20px; animation: float 5s ease-in-out infinite 2s; }

.highlights { display: flex; flex-direction: column; gap: 15px; margin-top: 30px; }
.highlight-item { display: flex; align-items: center; gap: 15px; }
.highlight-item i { color: var(--accent-blue); font-size: 1.5rem; }
.highlight-item span { font-weight: 600; font-size: 1.1rem; }

/* Tools Section (Sanklesh AI Style) */
.tools-pills {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-top: 40px;
    max-width: 900px;
    margin-inline: auto;
}
.tool-pill {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    backdrop-filter: blur(10px);
}
[data-theme="light"] .tool-pill {
    background: rgba(0, 0, 0, 0.03);
    border-color: rgba(0, 0, 0, 0.1);
}
.tool-pill span {
    font-size: 0.8rem;
    opacity: 0.6;
}
.tool-pill:hover, .tool-pill.active {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(139, 92, 246, 0.2));
    color: var(--text-primary);
    border-color: rgba(139, 92, 246, 0.5);
    transform: scale(1.05);
}

.tools-display {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 20px;
    margin-top: 40px;
    max-width: 1000px;
    margin-inline: auto;
}
.tool-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 20px 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    backdrop-filter: blur(10px);
    transition: var(--transition);
    cursor: default;
    position: relative;
}
[data-theme="light"] .tool-card {
    background: rgba(0, 0, 0, 0.02);
    border-color: rgba(0, 0, 0, 0.1);
}
.tool-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(139, 92, 246, 0.4);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}
.tool-card img {
    width: 36px;
    height: 36px;
    object-fit: contain;
}
.tool-card span {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    text-align: center;
}
.tool-fallback-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 14px;
}
.tool-tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
    margin-bottom: 10px;
    z-index: 10;
}
.tool-card:hover .tool-tooltip {
    opacity: 1;
}

/* Services Section */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; margin-top: 50px; }
.service-card { padding: 40px 30px; }
.card-icon { font-size: 2.5rem; color: var(--accent-purple); margin-bottom: 20px; }
.service-card h3 { margin-bottom: 20px; }
.card-content p { font-size: 0.95rem; margin-bottom: 10px; }
.card-content strong { color: var(--text-primary); font-weight: 600; }

.power-closing {
    padding: 30px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
    border-radius: 16px;
    border: 1px solid rgba(139, 92, 246, 0.3);
}
.highlight-quote {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin: 0;
}

/* Portfolio Section */
.portfolio-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
.portfolio-card { overflow: hidden; display: flex; flex-direction: column; }
.portfolio-img { position: relative; height: 180px; overflow: hidden; }
.portfolio-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.portfolio-card:hover .portfolio-img img { transform: scale(1.05); }
.portfolio-overlay {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
    display: flex; align-items: flex-end; padding: 15px;
}
.portfolio-overlay h4 { color: #fff; font-size: 1.1rem; margin: 0; }
.portfolio-info { padding: 20px; flex-grow: 1; }
.portfolio-info p { font-size: 0.85rem; margin-bottom: 10px; line-height: 1.5; }
.result-text { color: var(--accent-blue); font-weight: 600; font-size: 0.85rem; }

@media (max-width: 900px) {
    .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
    .portfolio-grid { grid-template-columns: 1fr; }
}

/* Skills */
.skills-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px; margin-top: 50px;
}
.skill-item {
    padding: 25px; display: flex; flex-direction: column; align-items: center; gap: 15px;
}
.skill-item i { font-size: 2.5rem; color: var(--text-primary); transition: var(--transition); }
.skill-item:hover i { color: var(--accent-blue); transform: scale(1.1); }
.skill-item span { font-weight: 600; }

/* Testimonials */
.testimonial-carousel { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; margin-top: 50px; }
.testimonial-card { padding: 40px; }
.stars { color: #fbbf24; margin-bottom: 20px; font-size: 1.2rem; }
.quote { font-style: italic; font-size: 1.1rem; color: var(--text-primary); margin-bottom: 30px; }
.client-info { display: flex; align-items: center; gap: 15px; }
.client-avatar { width: 50px; height: 50px; border-radius: 50%; background: var(--accent-purple); display: flex; align-items: center; justify-content: center; font-weight: 700; color: #fff; }
.client-details h4 { font-size: 1rem; margin-bottom: 5px; }
.client-details p { font-size: 0.85rem; margin-bottom: 0; }

/* Blog */
.blog-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; margin-top: 50px; }
.blog-card { display: block; padding: 30px; }
.blog-tag { background: rgba(59, 130, 246, 0.1); color: var(--accent-blue); padding: 5px 12px; border-radius: 20px; font-size: 0.8rem; font-weight: 600; margin-bottom: 15px; display: inline-block; }
.blog-content h3 { font-size: 1.3rem; margin-bottom: 15px; transition: var(--transition); }
.blog-card:hover h3 { color: var(--accent-blue); }
.read-more { color: var(--text-primary); font-weight: 600; font-size: 0.9rem; display: flex; align-items: center; gap: 5px; transition: var(--transition); }
.blog-card:hover .read-more { color: var(--accent-purple); gap: 10px; }

/* Contact Section */
.contact-container { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.contact-methods { margin-top: 30px; }
.method { display: flex; align-items: center; gap: 15px; margin-bottom: 15px; font-size: 1.1rem; }
.method i { color: var(--accent-purple); font-size: 1.3rem; }
.contact-form { padding: 40px; }
.form-group { margin-bottom: 25px; }
.form-group label { display: block; margin-bottom: 10px; font-weight: 500; }
.form-group input, .form-group textarea {
    width: 100%; padding: 15px; border-radius: 8px;
    background: rgba(0,0,0,0.2); border: 1px solid var(--glass-border);
    color: var(--text-primary); font-family: var(--font-main);
    transition: var(--transition);
}
[data-theme="light"] .form-group input, [data-theme="light"] .form-group textarea {
    background: rgba(255,255,255,0.5);
}
.form-group input:focus, .form-group textarea:focus {
    outline: none; border-color: var(--accent-blue); background: rgba(0,0,0,0.4);
}

/* Footer */
.footer { padding: 60px 0 20px; border-top: 1px solid var(--glass-border); }
.footer-top { display: grid; grid-template-columns: 2fr 2fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; align-items: center; }
.footer-socials { display: flex; gap: 20px; justify-content: flex-end; align-items: center; }
.footer-socials a { font-size: 1.5rem; transition: var(--transition); }
.footer-socials a:hover { color: var(--accent-purple); }
.footer-bottom { text-align: center; padding-top: 20px; border-top: 1px solid var(--glass-border); font-size: 0.9rem; }

/* Popup */
.popup-modal {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.8); backdrop-filter: blur(5px);
    display: flex; align-items: center; justify-content: center;
    z-index: 2000; opacity: 0; pointer-events: none; transition: var(--transition);
}
.popup-modal.active { opacity: 1; pointer-events: auto; }
.popup-content { padding: 40px; max-width: 450px; width: 90%; position: relative; transform: translateY(50px); transition: transform 0.4s; text-align: center;}
.popup-modal.active .popup-content { transform: translateY(0); }
.close-btn { position: absolute; top: 15px; right: 20px; background: none; border: none; font-size: 1.5rem; color: var(--text-primary); cursor: pointer; }
#popup-form input { width: 100%; padding: 15px; margin-bottom: 15px; border-radius: 8px; border: 1px solid var(--glass-border); background: rgba(0,0,0,0.2); color: var(--text-primary); }

/* Animations & Reveal */
.animate-fade-in { opacity: 0; animation: fadeIn 1s forwards; }
.animate-slide-down { opacity: 0; animation: slideDown 0.8s forwards; }
@keyframes fadeIn { to { opacity: 1; } }
@keyframes slideDown { from { transform: translateY(-20px); opacity: 0;} to { transform: translateY(0); opacity: 1; } }

.reveal { opacity: 0; transform: translateY(30px); transition: all 0.8s ease-out; }
.reveal.active { opacity: 1; transform: translateY(0); }

/* About Extended Section */
.about-features-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; margin-top: 60px; margin-bottom: 40px; }
.feature-card { padding: 35px 30px; display: flex; flex-direction: column; }
.mt-50 { margin-top: 50px; }
.about-subhead { margin-top: 30px; font-size: 1.3rem; color: var(--accent-blue); display: flex; align-items: center; gap: 10px; }
.about-subhead.mt-0 { margin-top: 0; margin-bottom: 25px; }
.about-list { margin-bottom: 25px; padding-left: 10px; flex-grow: 1; }
.about-list li { margin-bottom: 12px; display: flex; align-items: baseline; gap: 12px; font-size: 1.05rem; }
.about-list li i { color: var(--accent-purple); font-size: 0.9rem; }
.expertise-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 30px; }
.expertise-tags .tag { background: rgba(59, 130, 246, 0.1); border: 1px solid var(--accent-blue); color: var(--text-primary); padding: 8px 16px; border-radius: 50px; font-size: 0.9rem; font-weight: 500; }
.highlight-box { padding: 30px; border-left: 4px solid var(--accent-blue); margin-top: 40px; }
.highlight-box p { margin-bottom: 0; font-size: 1.15rem; color: var(--text-primary); }

/* Responsive */
@media (max-width: 900px) {
    .hero-content, .about-container, .contact-container, .about-features-grid { grid-template-columns: 1fr; }
    .hero-text { text-align: center; }
    .hero-visual { display: none; }
    .hero-ctas { justify-content: center; flex-direction: column; }
    .nav-links, .nav-cta { display: none; }
    .menu-btn { display: block; }
    h1 { font-size: 2.8rem; }
    .testimonial-carousel { grid-template-columns: 1fr; }
    .footer-top { grid-template-columns: 1fr; text-align: center; }
    .footer-socials { justify-content: center; }
    .badge-1, .badge-2 { position: static; display: inline-block; margin: 10px; animation: none;}
}