:root {
    /* Light Mode (Default) */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #f1f3f5;
    --primary-cyan: #0396B0;
    --cyan-light: #00D9FF;
    --cyan-dark: #0396B0;
    --accent-primary: #0396B0;
    --accent-secondary: #00D9FF;
    --accent-tertiary: #0396B0;
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(0, 0, 0, 0.5);
    --text-primary: #0a0a0a;
    --text-secondary: rgba(0, 0, 0, 0.75);
    --text-muted: rgba(0, 0, 0, 0.5);
    --success: #4caf50;
    --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 40px rgba(0, 217, 255, 0.2);
    --transition: cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --bg-primary: #000000;
    --bg-secondary: #141414;
    --bg-tertiary: #1a1a1a;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --success: #66bb6a;
    --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px rgba(0, 217, 255, 0.3);
    --primary-cyan: #00D9FF;
    --accent-primary: #00D9FF;
    --accent-secondary: #00D9FF;
    --accent-tertiary: #0396B0;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    transition: background-color 0.3s var(--transition), color 0.3s var(--transition);
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(0, 217, 255, 0.03) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(0, 217, 255, 0.02) 0%, transparent 50%),
                radial-gradient(circle at 40% 20%, rgba(0, 217, 255, 0.01) 0%, transparent 50%);
    pointer-events: none;
    z-index: 1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

/* Tablet and Mobile - Container Padding */
@media (max-width: 768px) {
    .container {
        padding: 0 12px;
    }
}

/* Desktop - Container Padding */
@media (min-width: 769px) {
    .container {
        padding: 0 24px;
    }
}

/* Glass Effect */
.glass {
    border-radius: 0;
    position: relative;
}

/* Futuristic glow effect for glass elements */
.glass::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent, rgba(0, 217, 255, 0.05), transparent);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s;
}

.glass-button {
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.1) 0%, rgba(0, 217, 255, 0.05) 100%);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 217, 255, 0.3);
    border-radius: 9999px;
    transition: all 0.3s var(--transition);
    padding: 12px 24px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.glass-button:hover {
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.2) 0%, rgba(0, 217, 255, 0.1) 100%);
    border-color: var(--primary-cyan);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

/* Social Links */
.social-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    background: transparent;
    transition: all 0.3s var(--transition);
    border-radius: 9999px;
}

.social-link:hover {
    color: var(--primary-cyan);
    border-color: var(--primary-cyan);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all 0.3s var(--transition);
}

.navbar.scrolled {
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.nav-brand a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 800;
    font-size: 1.5rem;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 30px;
    flex: 1;
    justify-content: flex-end;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s var(--transition);
}

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

/* Language Toggle */
.lang-toggle {
    background: none;
    border: 1px solid var(--glass-border);
    cursor: pointer;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6px 12px;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
    border-radius: 6px;
    transition: all 0.3s var(--transition);
}

.nav-controls {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

.lang-toggle:hover {
    border-color: var(--primary-cyan);
    color: var(--primary-cyan);
}

/* Language visibility controls */
[data-lang="en"] .lang-en { display: block; }
[data-lang="en"] .lang-ta { display: none; }
[data-lang="ta"] .lang-en { display: none; }
[data-lang="ta"] .lang-ta { display: block; }

/* Inline elements need inline display */
[data-lang="en"] .lang-en-inline { display: inline; }
[data-lang="en"] .lang-ta-inline { display: none; }
[data-lang="ta"] .lang-en-inline { display: none; }
[data-lang="ta"] .lang-ta-inline { display: inline; }

/* Flex elements need flex display */
[data-lang="en"] .lang-en-flex { display: flex; }
[data-lang="en"] .lang-ta-flex { display: none; }
[data-lang="ta"] .lang-en-flex { display: none; }
[data-lang="ta"] .lang-ta-flex { display: flex; }

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
}

.theme-toggle .theme-icon {
    width: 20px;
    height: 20px;
}

[data-theme="dark"] .theme-toggle .sun-icon {
    display: block;
}

[data-theme="dark"] .theme-toggle .moon-icon {
    display: none;
    flex-shrink: 0;
}

[data-theme="light"] .theme-toggle .sun-icon {
    display: none;
    flex-shrink: 0;
}

[data-theme="light"] .theme-toggle .moon-icon {
    display: block;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    margin-bottom: 30px;
    font-size: 14px;
    font-weight: 600;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 9999px;
}

.hero-title {
    font-size: clamp(48px, 8vw, 96px);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 30px;
}

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

.hero-description {
    font-size: clamp(18px, 2vw, 24px);
    color: var(--text-secondary);
    margin: 0 auto 40px;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

.btn-primary,
.btn-secondary {
    padding: 16px 32px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s var(--transition);
    text-decoration: none;
    border-radius: 9999px;
}

.btn-primary {
    background: var(--primary-cyan);
    color: #000000;
}

/* Theme-specific button text colors */
[data-theme="light"] .btn-primary {
    color: #ffffff;
}

[data-theme="dark"] .btn-primary {
    color: #000000;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 217, 255, 0.4);
}

.btn-secondary {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--glass-bg);
    border-color: var(--primary-cyan);
}

/* Sections */
section {
    padding: 80px 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-block;
    padding: 8px 20px;
    font-size: 14px;
    font-weight: 600;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 9999px;
    margin-bottom: 20px;
}

.section-title {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

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

.section-description {
    font-size: clamp(16px, 2vw, 20px);
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* About Section */
#about {
    border: 1px solid var(--glass-border);
    border-radius: 0;
    margin: 0 12px;
}

#about .container {
    padding: 0 20px;
}

/* Footer */
.footer {
    padding: 60px 0 30px;
    border-top: 1px solid var(--glass-border);
}

.footer-content-new {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
}

.footer-logo-section {
    text-align: center;
}

.footer-links-line {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links-line a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links-line a:hover {
    color: var(--primary-cyan);
}

.footer-powered-by-line {
    text-align: center;
}

.powered-by-u {
    color: var(--primary-cyan);
    text-decoration: none;
    font-weight: 600;
}

.footer-copyright-line {
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .nav-container {
        gap: 8px;
    }
    .nav-menu {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .theme-toggle {
        margin-left: auto;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

/* Features Grid Layout */
.features-grid {
    display: grid;
    grid-template-columns: 1fr;  /* Single column for cleaner timeline */
    gap: 24px;
    margin-top: 40px;
}

@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

.feature-card {
    display: flex;
    flex-direction: row-reverse;
    align-items: center;
    gap: 16px;
    padding: 24px;
    border-radius: 0;
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    transition: all 0.3s var(--transition);
}

.feature-card:hover {
    border-color: var(--primary-cyan);
    box-shadow: var(--shadow-glow);
}

.feature-icon-wrapper {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    /* NO background - wrapper is transparent */
}

.feature-icon-wrapper svg {
    width: 64px;
    height: 64px;
}

/* Icon wrapper classes - NO backgrounds, used only for identification */
.feature-icon-wrapper.generic-icon { /* No background */ }
.feature-icon-wrapper.brand-icon { /* No background */ }
.feature-icon-wrapper.geo-icon { /* No background */ }

/* Icon colors - light theme (default) */
.feature-icon-wrapper svg {
    color: #000000;
}

/* Icon colors - dark theme */
[data-theme="dark"] .feature-icon-wrapper svg {
    color: rgba(255, 255, 255, 0.21);
}

.feature-content {
    flex: 1;
}

.feature-content h4 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.feature-content h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.feature-content p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* Vision section styling */
.vision {
    padding: 80px 0;
    position: relative;
}

/* Mobile Menu Active State */
.nav-menu.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    padding: 20px;
    gap: 15px;
}

.nav-menu.active .nav-link {
    padding: 10px 0;
    border-bottom: 1px solid var(--glass-border);
}

.nav-menu.active .theme-toggle {
    margin-top: 10px;
}

/* Nav Toggle (Hamburger) */
.nav-toggle {
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 10;
}

.nav-toggle span {
    width: 30px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 3px;
    transition: all 0.3s ease;
}

.nav-toggle:hover span {
    background: var(--primary-cyan);
}

/* Desktop nav - ensure proper spacing */
@media (min-width: 769px) {
    .nav-container {
        flex-wrap: nowrap;
    }

    .nav-toggle {
        display: none !important;
    }

    .nav-menu {
        flex-shrink: 0;
    }

    .nav-brand {
        flex-shrink: 0;
    }
}

/* Theme-based logo switching */
.theme-logo {
    display: none;
}

[data-theme="dark"] .logo-dark {
    display: block;
}

[data-theme="light"] .logo-light {
    display: block;
}
/* Social Cards Grid */
.social-cards-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 21px;
    margin-bottom: 40px;
}

@media (max-width: 768px) {
    .social-cards-grid {
        grid-template-columns: 1fr;
    }
}

.social-card {
    padding: 25px;
    border-radius: 0;
    transition: all 0.3s ease;
    border: 1px solid var(--glass-border);
    position: relative;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    display: block;
}

.social-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(204, 153, 51, 0.1);
}

.social-card-content {
    position: relative;
    z-index: 2;
}

.social-card h4 {
    font-size: 1.2rem;
    margin-bottom: 8px;
    font-weight: 700;
}

.social-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0;
}

.social-icon-wrapper {
    position: absolute;
    right: 30px;
    top: 50%;
    transform: translateY(-50%) rotate(-30deg) scale(6.336);
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.33;
    pointer-events: none;
    z-index: 1;
}

.social-icon-wrapper svg, .social-icon-wrapper svg * {
    stroke: currentColor !important;
}

[data-theme="dark"] .social-icon-wrapper {
    opacity: 0.15;
}

/* Platform-specific colors */
/* X/Twitter */
.twitter-card { --social-color: #1DA1F2; }
.twitter-card .social-icon-wrapper { color: #1DA1F2; }
[data-theme="dark"] .twitter-card { border-color: rgba(29, 161, 242, 0.3); }
[data-theme="light"] .twitter-card { border-color: rgba(29, 161, 242, 0.5); }

/* Facebook */
.facebook-card { --social-color: #1877F2; }
.facebook-card .social-icon-wrapper { color: #1877F2; }
[data-theme="dark"] .facebook-card { border-color: rgba(24, 119, 242, 0.3); }
[data-theme="light"] .facebook-card { border-color: rgba(18, 100, 180, 0.5); }

/* LinkedIn */
.linkedin-card { --social-color: #0A66C2; }
.linkedin-card .social-icon-wrapper { color: #0A66C2; }
[data-theme="dark"] .linkedin-card { border-color: rgba(10, 102, 194, 0.3); }
[data-theme="light"] .linkedin-card { border-color: rgba(8, 80, 150, 0.5); }

/* Instagram */
.instagram-card { --social-color: #E4405F; }
.instagram-card .social-icon-wrapper { color: #E4405F; }
[data-theme="dark"] .instagram-card { border-color: rgba(228, 64, 95, 0.3); }
[data-theme="light"] .instagram-card { border-color: rgba(200, 50, 75, 0.5); }

/* GitHub */
.github-card { --social-color: #333333; }
.github-card .social-icon-wrapper { color: #333333; }
[data-theme="dark"] .github-card { border-color: rgba(50, 50, 50, 0.5); }
[data-theme="light"] .github-card { border-color: rgba(20, 20, 20, 0.5); }

/* YouTube */
.youtube-card { --social-color: #FF0000; }
.youtube-card .social-icon-wrapper { color: #FF0000; }
[data-theme="dark"] .youtube-card { border-color: rgba(255, 0, 0, 0.3); }
[data-theme="light"] .youtube-card { border-color: rgba(200, 0, 0, 0.5); }

/* TikTok */
.tiktok-card { --social-color: #00f2ea; }
.tiktok-card .social-icon-wrapper { color: #00f2ea; }
[data-theme="dark"] .tiktok-card { border-color: rgba(0, 242, 234, 0.3); }
[data-theme="light"] .tiktok-card { border-color: rgba(0, 180, 175, 0.5); }

/* Reddit */
.reddit-card { --social-color: #FF4500; }
.reddit-card .social-icon-wrapper { color: #FF4500; }
[data-theme="dark"] .reddit-card { border-color: rgba(255, 69, 0, 0.3); }
[data-theme="light"] .reddit-card { border-color: rgba(200, 50, 0, 0.5); }

/* Send Message (Purple) */
.message-card { --social-color: #8B5CF6; cursor: pointer; }
.message-card .social-icon-wrapper { color: #8B5CF6; }
[data-theme="dark"] .message-card { border-color: rgba(139, 92, 246, 0.3); }
[data-theme="light"] .message-card { border-color: rgba(120, 70, 220, 0.5); }

/* Book Meeting (Teal) */
.meeting-card { --social-color: #14B8A6; }
.meeting-card .social-icon-wrapper { color: #14B8A6; }
[data-theme="dark"] .meeting-card { border-color: rgba(20, 184, 166, 0.3); }
[data-theme="light"] .meeting-card { border-color: rgba(15, 150, 135, 0.5); }

/* Contact Modal */
.contact-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    max-width: 500px;
    width: 100%;
    padding: 40px;
    z-index: 1;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 217, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    font-size: 28px;
    color: var(--text-secondary);
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    color: var(--text-primary);
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    padding: 12px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    font-size: 16px;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-cyan);
}

.submit-btn {
    padding: 14px 28px;
    background: var(--primary-cyan);
    color: #000;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: rgba(10, 10, 20, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 217, 255, 0.3);
    border-radius: 8px;
    padding: 16px 24px;
    z-index: 100000;
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-primary);
}

#toast-icon {
    color: #00D9FF;
    font-size: 20px;
}