/* ============================================
   Visesh Infosystems — Corporate Website
   ============================================ */

:root {
    --primary: #1e40af;
    --primary-dark: #1e3a8a;
    --primary-light: #3b82f6;
    --accent: #f59e0b;
    --accent-dark: #d97706;
    --text: #111827;
    --text-light: #6b7280;
    --text-lighter: #9ca3af;
    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --border: #e5e7eb;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1), 0 6px 10px rgba(0,0,0,0.08);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---- Header / Navigation ---- */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.header.scrolled {
    border-bottom-color: var(--border);
    box-shadow: var(--shadow);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary);
}

.nav-logo .logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 800;
    font-size: 1.1rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 0.925rem;
    font-weight: 500;
    color: var(--text-light);
    transition: color var(--transition);
    position: relative;
}

.nav-links a:hover { color: var(--primary); }

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width var(--transition);
}

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

.nav-cta {
    background: var(--primary) !important;
    color: white !important;
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    font-weight: 600 !important;
    transition: background var(--transition), transform var(--transition) !important;
}

.nav-cta:hover {
    background: var(--primary-dark) !important;
    transform: translateY(-1px);
}

.nav-cta::after { display: none !important; }

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
    background: none;
    border: none;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: var(--transition);
    border-radius: 2px;
}

/* ---- Hero Section ---- */

.hero {
    padding: 160px 0 100px;
    background: linear-gradient(135deg, #f0f5ff 0%, #e0e7ff 50%, #f5f3ff 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59,130,246,0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(245,158,11,0.06) 0%, transparent 70%);
    border-radius: 50%;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(30,64,175,0.08);
    border: 1px solid rgba(30,64,175,0.15);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 24px;
}

.hero-badge .dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    max-width: 700px;
    margin-bottom: 20px;
}

.hero h1 .highlight {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 560px;
    margin-bottom: 36px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 14px rgba(30,64,175,0.3);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30,64,175,0.4);
}

.btn-outline {
    background: white;
    color: var(--text);
    border: 1.5px solid var(--border);
}

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

.hero-stats {
    display: flex;
    gap: 48px;
    margin-top: 64px;
    padding-top: 40px;
    border-top: 1px solid rgba(0,0,0,0.08);
}

.hero-stat .number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
}

.hero-stat .label {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-top: 2px;
}

/* ---- Section Shared ---- */

.section {
    padding: 100px 0;
}

.section-alt {
    background: var(--bg-alt);
}

.section-dark {
    background: var(--bg-dark);
    color: white;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-header .overline {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--primary);
    margin-bottom: 12px;
}

.section-dark .section-header .overline {
    color: var(--accent);
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-light);
    line-height: 1.7;
}

.section-dark .section-header p {
    color: var(--text-lighter);
}

/* ---- Services Section ---- */

.services-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.service-card {
    background: white;
    border-radius: var(--radius);
    padding: 48px 40px;
    border: 1px solid var(--border);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    opacity: 0;
    transition: opacity var(--transition);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.service-card:hover::before { opacity: 1; }

.service-card .icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    font-size: 1.5rem;
}

.service-card.software .icon {
    background: rgba(59,130,246,0.1);
    color: var(--primary-light);
}

.service-card.events .icon {
    background: rgba(245,158,11,0.1);
    color: var(--accent);
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.service-card > p {
    color: var(--text-light);
    margin-bottom: 24px;
    line-height: 1.7;
}

.service-card .features {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.service-card .features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: var(--text-light);
}

.service-card .features li .check {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: rgba(34,197,94,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.service-card .features li .check svg {
    width: 12px;
    height: 12px;
    color: #22c55e;
}

/* ---- Products Grid ---- */

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius);
    padding: 32px 28px;
    transition: all var(--transition);
}

.product-card:hover {
    background: rgba(255,255,255,0.08);
    transform: translateY(-4px);
    border-color: rgba(255,255,255,0.2);
}

.product-card .product-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.3rem;
}

.product-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.product-card p {
    font-size: 0.925rem;
    color: var(--text-lighter);
    line-height: 1.6;
    margin-bottom: 16px;
}

.product-card .tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.product-card .tech-tags span {
    font-size: 0.75rem;
    padding: 3px 10px;
    background: rgba(255,255,255,0.08);
    border-radius: 100px;
    color: var(--text-lighter);
    border: 1px solid rgba(255,255,255,0.06);
}

/* ---- Events Section ---- */

.events-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.events-text h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.events-text > p {
    color: var(--text-light);
    margin-bottom: 32px;
    line-height: 1.7;
}

.event-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.event-feature {
    padding: 20px;
    background: white;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.event-feature:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.event-feature .ef-icon {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.event-feature h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.event-feature p {
    font-size: 0.85rem;
    color: var(--text-light);
    line-height: 1.5;
}

.events-visual {
    position: relative;
}

.events-visual .visual-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.visual-card {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--radius);
    padding: 32px 24px;
    color: white;
    text-align: center;
}

.visual-card:nth-child(2) {
    background: linear-gradient(135deg, var(--accent-dark), var(--accent));
    margin-top: 32px;
}

.visual-card:nth-child(3) {
    background: linear-gradient(135deg, #7c3aed, #a78bfa);
    margin-top: -32px;
}

.visual-card:nth-child(4) {
    background: linear-gradient(135deg, #059669, #34d399);
}

.visual-card .vc-number {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 4px;
}

.visual-card .vc-label {
    font-size: 0.85rem;
    opacity: 0.9;
}

/* ---- Process Section ---- */

.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 15%;
    right: 15%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-light), var(--accent));
    opacity: 0.3;
}

.process-step {
    text-align: center;
    position: relative;
}

.process-step .step-num {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    color: var(--primary);
    margin: 0 auto 20px;
    position: relative;
    z-index: 1;
}

.process-step h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.process-step p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* ---- Tech Stack ---- */

.tech-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin-top: 40px;
}

.tech-pill {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition);
}

.tech-pill:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* ---- Testimonials ---- */

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    background: white;
    border-radius: var(--radius);
    padding: 32px;
    border: 1px solid var(--border);
}

.testimonial-card .stars {
    color: var(--accent);
    font-size: 1rem;
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.testimonial-card blockquote {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-card .author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.testimonial-card .author-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 0.9rem;
}

.testimonial-card .author-info .name {
    font-weight: 600;
    font-size: 0.9rem;
}

.testimonial-card .author-info .role {
    font-size: 0.8rem;
    color: var(--text-lighter);
}

/* ---- Contact Section ---- */

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.contact-info > p {
    color: var(--text-light);
    margin-bottom: 32px;
    line-height: 1.7;
}

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

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-item .ci-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(30,64,175,0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--primary);
}

.contact-item .ci-label {
    font-size: 0.85rem;
    color: var(--text-lighter);
    margin-bottom: 2px;
}

.contact-item .ci-value {
    font-weight: 600;
    font-size: 0.95rem;
}

.contact-item .ci-value a {
    color: var(--primary);
    transition: color var(--transition);
}

.contact-item .ci-value a:hover { color: var(--primary-dark); }

.contact-form {
    background: white;
    border-radius: var(--radius);
    padding: 40px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.95rem;
    transition: border-color var(--transition);
    outline: none;
    background: var(--bg);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30,64,175,0.1);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.btn-submit {
    width: 100%;
    padding: 14px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
}

/* ---- Footer ---- */

.footer {
    background: var(--bg-darker);
    color: white;
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand p {
    color: var(--text-lighter);
    font-size: 0.9rem;
    margin-top: 16px;
    line-height: 1.7;
    max-width: 300px;
}

.footer-col h4 {
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 20px;
    color: var(--text-lighter);
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
    transition: color var(--transition);
}

.footer-col ul li a:hover { color: white; }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-lighter);
}

.footer-bottom a {
    color: var(--text-lighter);
    transition: color var(--transition);
}

.footer-bottom a:hover { color: white; }

/* ---- Mobile Responsive ---- */

@media (max-width: 1024px) {
    .hero h1 { font-size: 2.8rem; }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 24px;
        gap: 20px;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
    }

    .nav-links.active { display: flex; }

    .hamburger { display: flex; }

    .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    .hamburger.active span:nth-child(2) { opacity: 0; }
    .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

    .hero { padding: 120px 0 60px; }
    .hero h1 { font-size: 2.2rem; }
    .hero p { font-size: 1.05rem; }
    .hero-stats { gap: 24px; flex-wrap: wrap; }
    .hero-stat .number { font-size: 1.5rem; }

    .section { padding: 60px 0; }
    .section-header h2 { font-size: 1.8rem; }
    .section-header { margin-bottom: 40px; }

    .services-grid { grid-template-columns: 1fr; }
    .products-grid { grid-template-columns: 1fr; }
    .events-content { grid-template-columns: 1fr; gap: 40px; }
    .event-features { grid-template-columns: 1fr; }
    .process-steps { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .process-steps::before { display: none; }
    .testimonials-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.8rem; }
    .hero-buttons { flex-direction: column; }
    .hero-buttons .btn { width: 100%; justify-content: center; }
    .visual-grid { grid-template-columns: 1fr !important; }
    .visual-card:nth-child(2),
    .visual-card:nth-child(3) { margin-top: 0; }
}