/* Apple-inspired CSS for Version 5 */
/* Smooth and appealing design with glassmorphism and fluid animations */

:root {
    /* Apple-inspired color palette */
    --apple-blue: #007AFF;
    --apple-green: #34C759;
    --apple-orange: #FF9500;
    --apple-purple: #5856D6;
    --apple-pink: #FF2D92;
    --apple-red: #FF3B30;
    --apple-yellow: #FFCC00;
    --apple-teal: #5AC8FA;
    
    /* Neutral colors */
    --white: #FFFFFF;
    --gray-50: #F2F2F7;
    --gray-100: #E5E5EA;
    --gray-200: #D1D1D6;
    --gray-300: #C7C7CC;
    --gray-400: #AEAEB2;
    --gray-500: #8E8E93;
    --gray-600: #636366;
    --gray-700: #48484A;
    --gray-800: #3A3A3C;
    --gray-900: #1C1C1E;
    --black: #000000;
    
    /* Apple Typography */
    --font-system: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Inter', system-ui, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', monospace;
    
    /* Apple-inspired spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* Apple-inspired border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-3xl: 2rem;
    --radius-full: 9999px;
    
    /* Apple-inspired shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px 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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Apple-inspired glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    
    /* Smooth animations */
    --transition-fast: 0.15s ease-out;
    --transition-smooth: 0.3s ease-out;
    --transition-slow: 0.5s ease-out;
    --transition-bounce: 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --transition-apple: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

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

body {
    font-family: var(--font-system), sans-serif;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--gray-900);
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--gray-900);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    letter-spacing: -0.01em;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 600;
}

p {
    color: var(--gray-600);
    line-height: 1.7;
}

a {
    color: var(--apple-blue);
    text-decoration: none;
    transition: var(--transition-smooth);
}

a:hover {
    color: var(--apple-purple);
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition-smooth);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--gray-900);
}

.logo img {
    border-radius: var(--radius-sm);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-link {
    font-weight: 500;
    color: var(--gray-700);
    transition: var(--transition-smooth);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--apple-blue);
    transition: var(--transition-smooth);
}

.nav-link:hover {
    color: var(--apple-blue);
}

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

.version-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.version-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--gray-100);
    color: var(--gray-600);
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition-smooth);
}

.version-link:hover {
    background: var(--gray-200);
    color: var(--gray-900);
}

.version-link.active {
    background: var(--apple-blue);
    color: var(--white);
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--gray-900);
    color: var(--white);
    padding: 8px;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    z-index: 100;
    transition: var(--transition-fast);
}

.skip-link:focus {
    top: 6px;
}

/* Main Content */
.main {
    padding-top: 80px;
}

/* Hero Section */
.hero {
    padding: var(--spacing-4xl) 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><radialGradient id="a"><stop offset="0" stop-color="%23ffffff" stop-opacity="0.1"/><stop offset="1" stop-color="%23ffffff" stop-opacity="0"/></radialGradient></defs><circle cx="200" cy="200" r="180" fill="url(%23a)"/><circle cx="800" cy="300" r="120" fill="url(%23a)"/><circle cx="400" cy="700" r="160" fill="url(%23a)"/></svg>');
    background-size: 100% 100%;
    opacity: 0.3;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    color: var(--white);
}

.hero-title {
    margin-bottom: var(--spacing-lg);
    color: var(--white);
}

.title-line {
    display: block;
    animation: fadeInUp 0.8s ease-out forwards;
    opacity: 0;
    transform: translateY(30px);
}

.title-line:nth-child(2) {
    animation-delay: 0.2s;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
    color: rgba(255, 255, 255, 0.9);
    animation: fadeInUp 0.8s ease-out 0.4s forwards;
    opacity: 0;
    transform: translateY(30px);
}

.hero-actions {
    display: flex;
    gap: var(--spacing-lg);
    animation: fadeInUp 0.8s ease-out 0.6s forwards;
    opacity: 0;
    transform: translateY(30px);
}

.cta-primary {
    background: var(--white);
    color: var(--gray-900);
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-lg);
}

.cta-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.cta-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    padding: var(--spacing-md) var(--spacing-xl);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.cta-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    height: 800px;
}

.floating-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--glass-shadow);
    transition: var(--transition-smooth);
    animation: float 6s ease-in-out infinite;
    /* Ensure cards don't overflow container */
    z-index: 2;
}

.floating-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-2xl);
}

.card-1 {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.card-2 {
    top: 50%;
    right: 20%;
    animation-delay: 2s;
}

.card-3 {
    left: 20%;
    animation-delay: 4s;
}

.card-content {
    text-align: center;
    color: var(--white);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.card-content h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
    color: var(--white);
}

.card-content p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
}

/* Sections */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-4xl);
}

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

.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray-500);
    max-width: 600px;
    margin: 0 auto;
}

/* Services Section */
.services {
    padding: var(--spacing-4xl) 0;
    background: var(--white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    background: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
    border: 1px solid var(--gray-100);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.service-icon {
    margin-bottom: var(--spacing-lg);
}

.service-title {
    margin-bottom: var(--spacing-md);
    color: var(--gray-900);
}

.service-description {
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.service-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.feature-tag {
    background: var(--gray-50);
    color: var(--gray-700);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
}

/* About Section */
.about {
    padding: var(--spacing-4xl) 0;
    background: var(--gray-50);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.about-description {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--apple-blue);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-600);
    font-weight: 500;
}

.visual-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.visual-item {
    aspect-ratio: 1;
    background: var(--white);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
}

.visual-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.visual-content {
    text-align: center;
}

.visual-icon {
    font-size: clamp(2.75rem, 4.5vw, 3.5rem);
    margin-bottom: var(--spacing-sm);
}

.visual-content span {
    font-weight: 600;
    color: var(--gray-900);
    font-size: clamp(1.125rem, 1.8vw, 1.5rem);
}

/* Work Section */
.work {
    padding: var(--spacing-4xl) 0;
    background: var(--white);
}

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

.work-item {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
    border: 1px solid var(--gray-100);
}

.work-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.work-item.featured {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

.work-image {
    background: var(--gray-50);
    aspect-ratio: 16/10;
    display: flex;
    align-items: center;
    justify-content: center;
}

.work-placeholder {
    position: relative;
    width: 100%;
    text-align: center;
}

/* Ensure images fill and stretch within the placeholder */
.work-placeholder > img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: fill;
    display: block;
}

/* Height variants for placeholders */
.work-placeholder--lg { height: 460px; }
.work-placeholder--md { height: 320px; }

.placeholder-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.work-content {
    padding: var(--spacing-xl);
}

.work-title {
    margin-bottom: var(--spacing-md);
    color: var(--gray-900);
}

.work-description {
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.work-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.work-tag {
    background: var(--gray-50);
    color: var(--gray-700);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
}

/* Testimonials Section */
.testimonials {
    padding: var(--spacing-4xl) 0;
    background: var(--gray-50);
}

.testimonials-slider {
    position: relative;
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
}

.testimonial-card {
    display: none;
    background: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.testimonial-card.active {
    display: block;
    animation: fadeIn 0.5s ease-in-out;
}

.testimonial-content blockquote {
    font-size: 1.25rem;
    line-height: 1.6;
    color: var(--gray-700);
    margin-bottom: var(--spacing-xl);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

.author-avatar {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    overflow: hidden;
    background: var(--apple-blue);
    display: flex;
    align-items: center;
    justify-content: center;
}

.avatar-placeholder {
    color: var(--white);
    font-weight: 600;
    font-size: 1.25rem;
}

.author-info {
    text-align: left;
}

.author-info h4 {
    margin-bottom: var(--spacing-xs);
    color: var(--gray-900);
}

.author-info span {
    color: var(--gray-600);
    font-size: 0.875rem;
}

.testimonial-dots {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    background: var(--gray-300);
    border: none;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.dot.active,
.dot:hover {
    background: var(--apple-blue);
}

/* Contact Section */
.contact {
    padding: var(--spacing-4xl) 0;
    background: var(--white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: start;
}

.contact-description {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.contact-icon {
    font-size: 1.5rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-xs);
}

.contact-value {
    font-weight: 600;
    color: var(--gray-900);
}

.contact-form-container {
    overflow: hidden;
    background: var(--gray-50);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-2xl);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--spacing-lg);
    width: 100%;

}

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

.form-group label {
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--gray-900);
}

.form-group input,
.form-group textarea {
    padding: var(--spacing-md);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: var(--transition-smooth);
    background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--apple-blue);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

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

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: var(--spacing-2xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-4xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand .logo {
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.footer-description {
    color: var(--gray-400);
    line-height: 1.7;
}

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

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

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    color: var(--gray-400);
    transition: var(--transition-smooth);
}

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

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: var(--spacing-xl);
}

.footer-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--gray-400);
    font-size: 0.875rem;
}