/* 
   DESIGN CONCEPT: Isometric Grid Layout with Glassmorphism Elements
   This design uses tilted card elements in an isometric perspective to create depth,
   combined with glassmorphism effects for a modern, tech-forward aesthetic perfect
   for a mobile app and product design studio.
*/

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

:root {
    /* Glassmorphism colour palette with UK design sensibility */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-light: rgba(255, 255, 255, 0.9);
    --backdrop-blur: blur(20px);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--primary-gradient);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Animated background pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 20%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 60%, rgba(79, 172, 254, 0.2) 0%, transparent 50%);
    z-index: -1;
    animation: backgroundShift 20s ease-in-out infinite;
}

@keyframes backgroundShift {
    0%, 100% { transform: translateX(0) translateY(0); }
    33% { transform: translateX(-5px) translateY(-10px); }
    66% { transform: translateX(5px) translateY(5px); }
}

/* Glass container base class */
.glass-container {
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

/* Header styles */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-light);
    text-decoration: none;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: width 0.3s ease;
}

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

/* Main content with isometric grid */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

/* Hero section with isometric tilt */
.hero-section {
    text-align: center;
    margin-bottom: 6rem;
    transform: perspective(1000px) rotateX(5deg);
    transition: transform 0.3s ease;
}

.hero-section:hover {
    transform: perspective(1000px) rotateX(0deg);
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: var(--secondary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--accent-gradient);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(79, 172, 254, 0.4);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(79, 172, 254, 0.6);
}

/* Isometric grid layout */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 4rem 0;
    perspective: 1000px;
}

.service-card {
    padding: 2rem;
    transform: rotateY(-15deg) rotateX(10deg);
    transition: all 0.4s ease;
    position: relative;
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
}

.service-card:nth-child(even) {
    transform: rotateY(15deg) rotateX(10deg);
}

.service-card:hover {
    transform: rotateY(0deg) rotateX(0deg) translateZ(20px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 1.5rem;
    background: var(--accent-gradient);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.service-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Contact form */
.contact-section {
    margin: 6rem 0 4rem;
    padding: 3rem;
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--glass-border);
    border-radius: 30px;
    transform: perspective(800px) rotateX(5deg);
}

.contact-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    background: var(--secondary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    display: grid;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-label {
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.form-input, .form-textarea {
    padding: 1rem;
    border: 2px solid var(--glass-border);
    border-radius: 15px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-input:focus, .form-textarea:focus {
    outline: none;
    border-color: #4facfe;
    background: rgba(255, 255, 255, 0.2);
}

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

.submit-button {
    padding: 1rem 2rem;
    background: var(--secondary-gradient);
    color: white;
    border: none;
    border-radius: 15px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 1rem;
}

.submit-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(245, 87, 108, 0.4);
}

/* Footer */
.footer {
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: var(--backdrop-blur);
    padding: 3rem 2rem 2rem;
    text-align: center;
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    color: var(--text-light);
}

.footer-section h3 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-links a:hover {
    opacity: 1;
}

.footer-bottom {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--glass-border);
    color: var(--text-light);
    opacity: 0.7;
}

/* Cookie banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    border-top: 1px solid var(--glass-border);
    padding: 1.5rem;
    z-index: 1000;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.cookie-banner.show {
    transform: translateY(0);
}

.cookie-banner.minimized {
    transform: translateY(calc(100% - 60px));
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.cookie-text {
    color: var(--text-light);
    flex: 1;
    min-width: 250px;
}

.cookie-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.cookie-btn {
    padding: 0.8rem 1.5rem;
    border: 1px solid var(--glass-border);
    border-radius: 25px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-light);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.cookie-btn.primary {
    background: var(--accent-gradient);
    border-color: transparent;
}

.cookie-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

.cookie-btn.primary:hover {
    background: var(--secondary-gradient);
}

.cookie-toggle {
    position: absolute;
    top: -40px;
    right: 20px;
    background: var(--accent-gradient);
    border: none;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px 20px 0 0;
    cursor: pointer;
    font-size: 0.8rem;
    transition: all 0.3s ease;
}

/* Responsive design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .service-card {
        transform: none;
    }
    
    .service-card:nth-child(even) {
        transform: none;
    }
    
    .hero-section,
    .contact-section {
        transform: none;
    }
    
    .cookie-content {
        flex-direction: column;
        text-align: center;
    }
    
    .cookie-actions {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: 2rem 1rem;
    }
    
    .contact-section {
        padding: 2rem 1rem;
    }
    
    .footer {
        padding: 2rem 1rem 1rem;
    }
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .service-card,
    .hero-section,
    .contact-section {
        transform: none !important;
    }
}

/* Focus styles for accessibility */
.form-input:focus,
.form-textarea:focus,
.cookie-btn:focus,
.submit-button:focus,
.cta-button:focus,
.nav-links a:focus {
    outline: 3px solid rgba(79, 172, 254, 0.6);
    outline-offset: 2px;
}