/* 
 * AI Solutions Catalog - Main Stylesheet
 * WCAG 2.2-AA compliant
 */

/* Import fonts */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;700&family=Lato:wght@300;400;700&display=swap');

/* CSS Reset and Base Styles */
:root {
    /* Brand Colors */
    --primary: #0079FF;
    --primary-dark: #0062cc; /* 8% darker for hover states */
    --secondary: #E61354;
    --tertiary: #021A3D;
    --white: #FFFFFF;
    --light-gray: #F5F7FA;
    --mid-gray: #CCD6E0;
    --dark-gray: #1B2735;
    
    /* Typography */
    --heading-font: 'Poppins', sans-serif;
    --body-font: 'Lato', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
    
    /* Border Radius */
    --border-radius: 1rem;
    
    /* Box Shadow */
    --box-shadow: 0 4px 12px rgba(2, 26, 61, 0.08);
    
    /* Transitions */
    --transition: 0.3s ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--body-font);
    line-height: 1.6;
    color: var(--tertiary);
    background-color: var(--white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6, nav, .btn {
    font-family: var(--heading-font);
    font-weight: 500;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 3rem;
    font-weight: 700;
}

h2 {
    font-size: 2.25rem;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

section {
    padding: var(--spacing-xl) 0;
}

/* Button Styles */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    outline: none;
}

.btn:focus-visible {
    outline: 2px dashed var(--mid-gray);
    outline-offset: 2px;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    color: var(--white);
}

.btn-secondary {
    background-color: var(--white);
    color: var(--primary);
    border: 1px solid var(--primary);
}

.btn-secondary:hover {
    background-color: var(--light-gray);
}

/* Header Styles */
.header {
    position: sticky;
    top: 0;
    background-color: var(--white);
    box-shadow: var(--box-shadow);
    padding: var(--spacing-sm) 0;
    z-index: 100;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    font-family: var(--heading-font);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--tertiary);
}

.logo span {
    color: var(--primary);
}

.desktop-nav ul {
    display: flex;
    gap: var(--spacing-md);
}

.desktop-nav a {
    color: var(--tertiary);
    font-weight: 500;
    position: relative;
}

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

.desktop-nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: var(--transition);
}

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

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 24px;
    position: relative;
    z-index: 101;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--tertiary);
    margin: 5px 0;
    transition: var(--transition);
}

.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background-color: var(--white);
    padding: 80px var(--spacing-md) var(--spacing-md);
    transition: var(--transition);
    z-index: 100;
}

.mobile-nav ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.mobile-nav a {
    color: var(--tertiary);
    font-size: 1.5rem;
    font-weight: 500;
}

.mobile-nav.active {
    right: 0;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--tertiary) 0%, var(--primary) 100%);
    color: var(--white);
    text-align: center;
    padding: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.1) 0%, transparent 10%),
                     radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.1) 0%, transparent 10%);
    opacity: 0.6;
}

.hero .container {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero h1 {
    margin-bottom: var(--spacing-sm);
    font-size: 3.5rem;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    font-weight: 300;
}

.hero .btn {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Why Us Section */
.why-us {
    background-color: var(--light-gray);
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.feature {
    background-color: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
    transition: var(--transition);
}

.feature:hover {
    transform: translateY(-5px);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--light-gray);
    border-radius: 50%;
    color: var(--primary);
}

.feature h3 {
    margin-bottom: var(--spacing-sm);
}

/* Catalogue Section */
.catalogue {
    background-color: var(--white);
}

.catalogue-nav {
    margin-bottom: var(--spacing-md);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none; /* Firefox */
}

.catalogue-nav::-webkit-scrollbar {
    display: none; /* Chrome, Safari, Edge */
}

.catalogue-nav ul {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    justify-content: center;
}

.catalogue-nav a {
    display: block;
    padding: 0.5rem 1rem;
    background-color: var(--light-gray);
    border-radius: 2rem;
    white-space: nowrap;
    color: var(--tertiary);
    font-size: 0.9rem;
    transition: var(--transition);
}

.catalogue-nav a:hover, .catalogue-nav a.active {
    background-color: var(--primary);
    color: var(--white);
}

.catalogue-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.category {
    border: 1px solid var(--mid-gray);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.category-header {
    background-color: var(--light-gray);
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.category-header h3 {
    margin-bottom: 0;
}

.chevron {
    width: 20px;
    height: 20px;
    position: relative;
    transition: var(--transition);
}

.chevron::before, .chevron::after {
    content: '';
    position: absolute;
    background-color: var(--tertiary);
    width: 2px;
    height: 10px;
    top: 5px;
}

.chevron::before {
    left: 5px;
    transform: rotate(45deg);
}

.chevron::after {
    right: 5px;
    transform: rotate(-45deg);
}

.category-header[aria-expanded="true"] .chevron {
    transform: rotate(180deg);
}

.category-content {
    padding: var(--spacing-md);
    display: none;
}

.category-header[aria-expanded="true"] + .category-content {
    display: block;
}

.solution {
    margin-bottom: var(--spacing-md);
}

.solution:last-child {
    margin-bottom: 0;
}

.solution h4 {
    color: var(--tertiary);
    margin-bottom: 0.5rem;
}

.solution p {
    margin-bottom: 0;
}

.solution em {
    color: var(--primary);
    font-style: normal;
    font-weight: 500;
}

.solution-tech {
    font-size: 0.9rem;
    color: #5a6477;
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px dotted #e1e8f0;
}

.solution p:not(.solution-tech) {
    margin-bottom: 0.5rem;
}

/* Pricing Section */
.pricing {
    background-color: var(--light-gray);
}

.solution-tiers {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.solution-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: var(--spacing-md);
    text-align: center;
    position: relative;
    transition: var(--transition);
}

.solution-card:hover {
    transform: translateY(-5px);
}

.solution-card.featured {
    border: 2px solid var(--secondary);
    transform: scale(1.05);
}

.solution-card.featured:hover {
    transform: scale(1.05) translateY(-5px);
}

.ribbon {
    position: absolute;
    top: 20px;
    right: -30px;
    background-color: var(--secondary);
    color: var(--white);
    padding: 0.25rem 2rem;
    transform: rotate(45deg);
    font-size: 0.8rem;
    font-weight: 700;
}

.solution-card h3 {
    margin-bottom: var(--spacing-sm);
}

.tier-description {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
}

.solution-card ul {
    text-align: left;
    margin-bottom: var(--spacing-md);
}

.solution-card li {
    margin-bottom: 0.5rem;
    position: relative;
    padding-left: 1.5rem;
}

.solution-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
}

/* Testimonials Section */
.testimonials {
    background-color: var(--white);
}

.testimonial-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.testimonial {
    background-color: var(--light-gray);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    text-align: center;
}

.avatar {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-sm);
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

blockquote {
    font-style: italic;
    margin-bottom: var(--spacing-sm);
}

cite {
    font-style: normal;
    font-weight: 700;
    color: var(--tertiary);
}

/* Contact Section */
.contact {
    background-color: var(--light-gray);
}

.catalogue .container {
    max-width: 800px;
}

.section-intro {
    text-align: center;
    color: #4A5568;
    max-width: 700px;
    margin: 0 auto var(--spacing-md);
    font-size: 1.1rem;
    line-height: 1.6;
}

.contact .container {
    max-width: 800px;
}

.contact h2, .contact p {
    text-align: center;
}

.contact p {
    margin-bottom: var(--spacing-md);
}

.contact-form {
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--box-shadow);
}

.form-group {
    margin-bottom: var(--spacing-sm);
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

input, select, textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--mid-gray);
    border-radius: 0.5rem;
    font-family: var(--body-font);
    font-size: 1rem;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(0, 121, 255, 0.2);
}

.recaptcha {
    margin-bottom: var(--spacing-md);
}

.recaptcha-placeholder {
    background-color: var(--light-gray);
    border: 1px dashed var(--mid-gray);
    padding: var(--spacing-sm);
    text-align: center;
    color: var(--dark-gray);
    border-radius: 0.5rem;
}

/* Footer */
.footer {
    background-color: var(--tertiary);
    color: var(--white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.footer-logo a {
    color: var(--white);
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--heading-font);
}

.footer-logo span {
    color: var(--primary);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.footer-column h4 {
    color: var(--white);
    margin-bottom: var(--spacing-sm);
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-column a {
    color: var(--mid-gray);
}

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

.footer-social h4 {
    margin-bottom: var(--spacing-sm);
}

.social-icons {
    display: flex;
    gap: var(--spacing-sm);
}

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--white);
    transition: var(--transition);
}

.social-icons a:hover {
    background-color: var(--primary);
    transform: translateY(-3px);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.privacy-link {
    color: var(--mid-gray);
    font-size: 0.9rem;
}

.privacy-link:hover {
    color: var(--white);
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Technology Capabilities Section */
.capabilities-section {
    background-color: var(--light-gray);
    padding: var(--spacing-xl) 0;
}

.capabilities-section h2 {
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.capabilities-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: var(--spacing-md);
}

.capabilities-tab {
    background-color: var(--white);
    color: var(--tertiary);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 2rem;
    font-family: var(--heading-font);
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.capabilities-tab:hover {
    background-color: rgba(0, 121, 255, 0.1);
}

.capabilities-tab.active {
    background-color: var(--primary);
    color: var(--white);
}

.capabilities-tab.ai-tab.active,
.capabilities-tab.cloud-tab.active,
.capabilities-tab.cyber-tab.active,
.capabilities-tab.digital-tab.active,
.capabilities-tab.apps-tab.active { 
    background-color: #0079FF; 
}

.capabilities-content {
    max-width: 900px;
    margin: 0 auto;
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.capability-area {
    display: none;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.capability-area.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.capability-header {
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

.capability-header::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 150px;
    height: 150px;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="150" height="150" viewBox="0 0 150 150" fill="none"><path d="M0 0L150 0L150 150C67.1573 150 0 82.8427 0 0Z" fill="white" fill-opacity="0.1"/></svg>');
    background-size: contain;
    background-repeat: no-repeat;
}

.capability-header h3 {
    color: var(--white);
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 1;
}

.capability-header p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    margin: 0;
    max-width: 90%;
    position: relative;
    z-index: 1;
}

.ai-header,
.cloud-header,
.cyber-header,
.digital-header,
.apps-header { 
    background: linear-gradient(135deg, #0079FF 0%, #00A3FF 100%); 
}

.capability-items {
    padding: 1.5rem 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
}

.capability-item {
    background-color: var(--light-gray);
    border-radius: 12px;
    padding: 1.25rem;
    border-top: 4px solid;
    box-shadow: 0 4px 12px rgba(0,0,0,0.03);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.capability-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
}

.ai-capability,
.cloud-capability,
.cyber-capability,
.digital-capability,
.apps-capability { 
    border-color: #0079FF; 
}

.capability-item strong {
    display: block;
    color: var(--tertiary);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.capability-item p {
    color: #4A5568;
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

@media (max-width: 768px) {
    .capabilities-tab {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
    
    .capability-header h3 {
        font-size: 1.5rem;
    }
    
    .capability-header p {
        font-size: 1rem;
    }
    
    .capability-items {
        grid-template-columns: 1fr;
        padding: 1.25rem;
    }
    
    .capability-item {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .capabilities-tab {
        padding: 0.5rem 0.8rem;
        font-size: 0.8rem;
    }
    
    .capability-header {
        padding: 1.5rem;
    }
    
    .capability-header h3 {
        font-size: 1.3rem;
    }
    
    .capability-header p {
        font-size: 0.9rem;
    }
}

/* Media Queries */
@media (max-width: 1024px) {
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .footer-links {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .desktop-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .mobile-nav {
        display: block;
    }
    
    .features, .solution-tiers, .testimonial-cards {
        grid-template-columns: 1fr;
    }
    
    .solution-card.featured {
        transform: none;
    }
    
    .solution-card.featured:hover {
        transform: translateY(-5px);
    }
    
    .footer-links {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    section {
        padding: var(--spacing-lg) 0;
    }
    
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
}

/* Accessibility Enhancements */
:focus-visible {
    outline: 2px dashed var(--primary);
    outline-offset: 2px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Skip to content link for keyboard users */
.skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary);
    color: white;
    padding: 8px;
    z-index: 100;
    transition: top 0.3s;
}

.skip-to-content:focus {
    top: 0;
}