/* ============================================
   TSA Software Technologies - Main Stylesheet
   ============================================ */

/* CSS Custom Properties (Color Palette) */
:root {
    --primary-blue: #1e3a8a;
    --secondary-blue: #3b82f6;
    --white: #ffffff;
    --light-gray: #f3f4f6;
    --medium-gray: #e5e7eb;
    --dark-gray: #6b7280;
    --text-dark: #1f2937;
    --text-light: #9ca3af;
}

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

body {
    font-family: 'Inter', 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1rem;
    color: var(--dark-gray);
}

/* Navigation */
.navbar {
    background-color: var(--white) !important;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue) !important;
    text-decoration: none;
}

.navbar-nav .nav-link {
    color: var(--text-dark) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    transition: color 0.3s ease;
    position: relative;
}

.navbar-nav .nav-link:hover {
    color: var(--secondary-blue) !important;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary-blue);
    transition: width 0.3s ease;
}

.navbar-nav .nav-link:hover::after {
    width: 100%;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    color: var(--white);
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('https://images.unsplash.com/photo-1522071820081-009f0129c71c?w=1920&q=80') center/cover;
    opacity: 0.2;
    z-index: 0;
}

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

.hero-section h1 {
    font-size: 3rem;
    color: var(--white);
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease;
}

.hero-section p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease;
}

/* Buttons */
.btn-primary {
    background-color: var(--secondary-blue);
    border: none;
    padding: 12px 30px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 5px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary:hover {
    background-color: var(--primary-blue);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(59, 130, 246, 0.4);
}

.btn-outline-primary {
    border: 2px solid var(--white);
    color: var(--white);
    padding: 12px 30px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 5px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

/* Section Styles */
.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.section-title p {
    font-size: 1.1rem;
    color: var(--dark-gray);
    max-width: 600px;
    margin: 0 auto;
}

/* Service Cards */
.service-card {
    background: var(--white);
    border-radius: 10px;
    padding: 2.5rem;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    height: 100%;
    margin-bottom: 2rem;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.service-icon {
    font-size: 3.5rem;
    color: var(--secondary-blue);
    margin-bottom: 1.5rem;
    display: inline-block;
    transition: transform 0.3s ease;
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
}

.service-card h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--dark-gray);
    line-height: 1.8;
}

/* Why Choose Us Cards */
.feature-card {
    background: var(--white);
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    height: 100%;
    margin-bottom: 2rem;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
    border-top: 3px solid var(--secondary-blue);
}

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

.feature-card h4 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

/* About Section */
.about-section {
    background-color: var(--light-gray);
}

.about-content {
    padding: 2rem 0;
}

.about-content h2 {
    color: var(--primary-blue);
    margin-bottom: 1.5rem;
}

.about-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.mission-vision {
    margin-top: 3rem;
}

.mission-card, .vision-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    height: 100%;
    transition: transform 0.3s ease;
}

.mission-card:hover, .vision-card:hover {
    transform: translateY(-5px);
}

.mission-card h3, .vision-card h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.experience-badge {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    color: var(--white);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    margin: 2rem 0;
}

.experience-badge h2 {
    color: var(--white);
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.experience-badge p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.2rem;
    margin: 0;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    color: var(--white);
    padding: 60px 0;
    text-align: center;
}

.cta-section h2 {
    color: var(--white);
    margin-bottom: 1rem;
}

.cta-section p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

/* Contact Form */
.contact-section {
    padding: 80px 0;
    background-color: var(--light-gray);
}

.contact-form {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-control {
    border: 2px solid var(--medium-gray);
    border-radius: 5px;
    padding: 12px 15px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--secondary-blue);
    box-shadow: 0 0 0 0.2rem rgba(59, 130, 246, 0.25);
    outline: none;
}

.form-control.is-invalid {
    border-color: #dc3545;
}

.invalid-feedback {
    display: block;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: #dc3545;
}

.alert-success {
    background-color: #d1e7dd;
    border-color: #badbcc;
    color: #0f5132;
    padding: 1rem;
    border-radius: 5px;
    margin-top: 1rem;
}

.contact-info {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    height: 100%;
}

.contact-info h3 {
    color: var(--primary-blue);
    margin-bottom: 1.5rem;
}

.contact-item {
    margin-bottom: 2rem;
    display: flex;
    align-items: flex-start;
}

.contact-icon {
    font-size: 1.5rem;
    color: var(--secondary-blue);
    margin-right: 1rem;
    margin-top: 0.25rem;
}

.contact-item h5 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: var(--dark-gray);
    margin: 0;
}

/* Google Map */
.map-container {
    margin-top: 3rem;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.map-container iframe {
    width: 100%;
    height: 400px;
    border: none;
}

/* Footer */
.footer {
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 50px 0 20px;
}

.footer h5 {
    color: var(--white);
    margin-bottom: 1.5rem;
}

.footer p, .footer a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: var(--white);
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 5px;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    display: inline-block;
    width: 40px;
    height: 40px;
    background-color: rgba(5, 5, 5, 0.1);
    border-radius: 50%;
    text-align: center;
    line-height: 40px;
    color: #343435;          
    transition: all 0.3s ease;
}

.social-links a:hover {
    background-color: var(--secondary-blue);
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 2rem;
    padding-top: 2rem;
    text-align: center;
}

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

.fade-in-up {
    animation: fadeInUp 0.8s ease;
}

/* Responsive Design */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .hero-section {
        padding: 80px 0 60px;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .hero-section p {
        font-size: 1rem;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title h2 {
        font-size: 2rem;
    }
    
    .service-card, .feature-card {
        margin-bottom: 2rem;
    }
    
    .contact-form, .contact-info {
        margin-bottom: 2rem;
    }
}

@media (max-width: 576px) {
    .hero-section h1 {
        font-size: 1.75rem;
    }
    
    .section-title h2 {
        font-size: 1.75rem;
    }
    
    .service-card, .feature-card {
        padding: 1.5rem;
    }
    
    .contact-form, .contact-info {
        padding: 1.5rem;
    }
}

/* SPA Section Management */
.page-section {
    display: none;
    animation: fadeIn 0.5s ease-in-out;
}

.page-section.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

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

.mt-5 {
    margin-top: 3rem;
}

.mb-5 {
    margin-bottom: 3rem;
}