:root {
    --primary-color: #0ea5e9;
    --primary-dark: #0284c7;
    --primary-light: #38bdf8;
    --primary-50: #f0f9ff;
    --primary-100: #e0f2fe;
}

html {
    scroll-behavior: smooth;
    font-size: 14px;
}

@media (min-width: 768px) {
    html {
        font-size: 16px;
    }
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    color: #333;
    line-height: 1.6;
}

/* Navigation */
#mainNav {
    transition: all 0.3s ease;
    padding: 1rem 0;
}

#mainNav.scrolled {
    background-color: rgba(255, 255, 255, 0.98) !important;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.navbar-brand {
    font-size: 1.5rem;
    color: var(--primary-color) !important;
    text-decoration: none;
}

.navbar-brand img {
    transition: transform 0.3s ease;
}

.navbar-brand:hover img {
    transform: scale(1.05);
}

.nav-link {
    color: #333 !important;
    font-weight: 500;
    margin: 0 0.5rem;
    transition: color 0.3s ease;
}

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

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-50) 0%, #ffffff 50%, var(--primary-50) 100%);
    padding-top: 80px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #64748b;
    margin-bottom: 2rem;
}

/* Buttons */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    padding: 0.75rem 2rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
}

.btn-outline-primary {
    border-color: var(--primary-color);
    color: var(--primary-color);
    padding: 0.75rem 2rem;
    font-weight: 600;
}

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

/* Section Styling */
.section {
    padding: 5rem 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1rem;
    text-align: center;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #64748b;
    text-align: center;
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Feature Cards */
.feature-card {
    background: linear-gradient(135deg, var(--primary-50) 0%, #ffffff 100%);
    border: 1px solid var(--primary-100);
    border-radius: 1rem;
    padding: 2rem;
    height: 100%;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 24px rgba(14, 165, 233, 0.15);
}

.feature-icon {
    color: var(--primary-color);
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.75rem;
}

.feature-description {
    color: #64748b;
}

/* Technology List */
.tech-item {
    background: white;
    padding: 1.5rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    display: flex;
    align-items: start;
}

.tech-item:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transform: translateX(5px);
}

.tech-bullet {
    width: 8px;
    height: 8px;
    background-color: var(--primary-color);
    border-radius: 50%;
    margin-top: 0.5rem;
    margin-right: 1rem;
    flex-shrink: 0;
}

/* Capabilities Section */
.capabilities-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
}

.capability-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.capability-card:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

.capability-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    color: white;
}

/* Specs Section */
.spec-category {
    background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
    border: 1px solid #e2e8f0;
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.spec-category-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--primary-100);
}

.spec-item {
    background: white;
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 0.75rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
}

.spec-label {
    font-weight: 600;
    color: #1e293b;
    margin-right: 1rem;
    min-width: 200px;
}

.spec-value {
    color: #64748b;
}

/* Contact Form */
.contact-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 5rem 0;
}

.contact-form {
    background: white;
    border-radius: 1.5rem;
    padding: 3rem;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(14, 165, 233, 0.25);
}

/* Image Placeholder */
.image-placeholder {
    background: linear-gradient(135deg, var(--primary-100) 0%, var(--primary-50) 100%);
    border-radius: 1.5rem;
    padding: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.image-placeholder-inner {
    text-align: center;
    color: #64748b;
}

.image-placeholder-icon {
    font-size: 5rem;
    color: var(--primary-light);
    margin-bottom: 1rem;
}

/* Slogan */
.slogan {
    text-align: center;
    margin-top: 4rem;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-dark);
    font-style: italic;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .spec-label {
        min-width: 100%;
        margin-bottom: 0.5rem;
    }
}

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

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}