/* Custom CSS for TechnoIoT Landing Page */

:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --text-dark: #1f2937;
    --text-muted: #6b7280;
    --bg-light: #f8fafc;
    --white: #ffffff;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* Global Styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    scroll-behavior: smooth;
}

/* Navbar Styles */
.navbar {
    transition: all 0.3s ease;
    padding: 1rem 0;
}

.navbar-brand {
    font-size: 1.5rem;
    color: var(--primary-color) !important;
}

.nav-link {
    font-weight: 500;
    color: var(--text-dark) !important;
    transition: color 0.3s ease;
    padding: 0.5rem 1rem !important;
}

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

/* Hero Section */
.hero-section {
    min-height: 100vh;
    padding-top: 100px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.hero-icon {
    font-size: 8rem;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* Feature Cards */
.feature-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e5e7eb;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 3rem;
}

/* Technology Cards */
.tech-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e5e7eb;
}

.tech-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.tech-icon {
    font-size: 2.5rem;
}

/* Contact Section */
.contact-info {
    border: 1px solid #e5e7eb;
}

.contact-item {
    margin-bottom: 1.5rem;
}

.contact-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #eff6ff;
    border-radius: 50%;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 1.2rem;
}

/* Utility Classes */
.text-primary {
    color: var(--primary-color) !important;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    transition: all 0.3s ease;
}

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

.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
    transition: all 0.3s ease;
}

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

.bg-light {
    background-color: var(--bg-light) !important;
}

.shadow-sm {
    box-shadow: var(--shadow) !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section {
        padding-top: 80px;
        text-align: center;
    }
    
    .hero-icon {
        font-size: 4rem;
        margin-top: 2rem;
    }
    
    .display-4 {
        font-size: 2rem;
    }
    
    .display-5 {
        font-size: 1.75rem;
    }
    
    .feature-icon,
    .tech-icon {
        font-size: 2rem;
    }
}

@media (max-width: 576px) {
    .hero-section {
        padding-top: 60px;
    }
    
    .display-4 {
        font-size: 1.75rem;
    }
    
    .lead {
        font-size: 1rem;
    }
    
    .btn-lg {
        font-size: 1rem;
        padding: 0.75rem 1.5rem;
    }
}

/* Smooth scrolling enhancement */
html {
    scroll-padding-top: 80px;
}

/* Loading animation */
.loading {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.loading.loaded {
    opacity: 1;
    transform: translateY(0);
}

/* Focus styles for accessibility */
.btn:focus,
.nav-link:focus {
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.25);
}

/* Print styles */
@media print {
    .navbar,
    .btn,
    .hero-icon {
        display: none !important;
    }
    
    .hero-section {
        min-height: auto;
        padding-top: 0;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
}