/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Poppins:wght@300;400;500;600;700;800&display=swap');

/* --- CSS Variables --- */
:root {
    /* Brand Colors */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #7c3aed;
    --accent-color: #06b6d4;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    
    /* Gradients */
    --primary-gradient: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    --secondary-gradient: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --accent-gradient: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
    --hero-gradient: linear-gradient(135deg, #1e40af 0%, #7c3aed 50%, #2563eb 100%);
    
    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Text Colors */
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-muted: var(--gray-500);
    --text-white: var(--white);
    
    /* Background Colors */
    --bg-primary: var(--white);
    --bg-secondary: var(--gray-50);
    --bg-tertiary: var(--gray-100);
    
    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    --space-5xl: 8rem;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

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

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    line-height: 1.5;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 1rem;
    font-weight: 400;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    margin-bottom: var(--space-md);
    letter-spacing: -0.025em;
}

h1 { 
    font-size: clamp(2.5rem, 5vw, 4rem); 
    font-weight: 800;
    line-height: 1.1;
}

h2 { 
    font-size: clamp(2rem, 4vw, 3rem); 
    font-weight: 700;
}

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

h4 { 
    font-size: clamp(1.25rem, 2.5vw, 1.5rem); 
    font-weight: 600;
}

p {
    margin-bottom: var(--space-lg);
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1.1rem;
}

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

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

/* --- Header & Navigation --- */
header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    padding: var(--space-lg) 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    transition: var(--transition-normal);
    border-bottom: 1px solid var(--gray-200);
}

header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
    padding: var(--space-md) 0;
}

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

.logo-link {
    display: flex;
    align-items: center;
    transition: var(--transition-fast);
}

.logo-link:hover {
    transform: scale(1.02);
}

.logo-img {
    height: 48px;
    width: auto;
    transition: var(--transition-fast);
}

/* Navigation */
nav {
    transition: var(--transition-normal);
}

nav ul {
    list-style: none;
    display: flex;
    gap: var(--space-sm);
    align-items: center;
}

nav a {
    color: var(--text-primary);
    font-weight: 500;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-lg);
    position: relative;
    transition: var(--transition-fast);
    font-size: 0.95rem;
}

nav a:hover {
    background: var(--gray-100);
    color: var(--primary-color);
    transform: translateY(-1px);
}

nav a.active {
    background: var(--primary-gradient);
    color: var(--text-white);
    box-shadow: var(--shadow-md);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    background: transparent;
    border: none;
}

.mobile-menu-toggle:hover {
    background: var(--gray-100);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition-fast);
    border-radius: 2px;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

/* --- Hero Section --- */
.hero {
    background: var(--hero-gradient);
    color: var(--text-white);
    text-align: center;
    padding: calc(100px + var(--space-5xl)) var(--space-lg) var(--space-5xl);
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(120, 119, 198, 0.2) 0%, transparent 50%);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.hero .container {
    position: relative;
    z-index: 2;
    max-width: 900px;
}

.hero h1 {
    color: var(--text-white);
    margin-bottom: var(--space-xl);
    font-weight: 800;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: var(--space-2xl);
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--text-white);
    color: var(--primary-color);
    padding: var(--space-lg) var(--space-2xl);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-xl);
    border: none;
    cursor: pointer;
    text-decoration: none;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-2xl);
    background: var(--gray-50);
}

.cta-button svg {
    transition: var(--transition-fast);
}

.cta-button:hover svg {
    transform: translateX(4px);
}

/* --- Services Section --- */
.services-section {
    padding: var(--space-5xl) 0;
    background: var(--bg-secondary);
    position: relative;
}

.services-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gray-200), transparent);
}

.services-section h2 {
    text-align: center;
    margin-bottom: var(--space-md);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-4xl) auto;
    font-size: 1.2rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: var(--space-2xl);
    margin-top: var(--space-4xl);
}

.service-card {
    background: var(--bg-primary);
    padding: var(--space-2xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: var(--transition-normal);
    transform-origin: left;
}

.service-card:hover::before {
    transform: scaleX(1);
}

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

.service-card h3 {
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
}

.service-card p {
    margin-bottom: var(--space-xl);
    line-height: 1.7;
    color: var(--text-secondary);
    flex-grow: 1;
}

.service-card .status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 600;
    color: var(--text-white);
    background: var(--secondary-gradient);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    align-self: flex-start;
    box-shadow: var(--shadow-sm);
}

.service-card .status-badge svg {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* --- Page Header --- */
.page-header {
    background: var(--primary-gradient);
    padding: calc(80px + var(--space-4xl)) var(--space-lg) var(--space-4xl);
    text-align: center;
    color: var(--text-white);
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 70%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    opacity: 0.8;
}

.page-header h1 {
    color: var(--text-white);
    position: relative;
    z-index: 2;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* --- Content Section --- */
.content-section {
    padding: var(--space-5xl) 0;
    background: var(--bg-secondary);
}

.content-section .container {
    background: var(--bg-primary);
    padding: var(--space-3xl);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--gray-200);
    max-width: 900px;
}

.content-section h2 {
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 2px solid var(--gray-200);
    color: var(--text-primary);
}

.content-section h2:first-child {
    margin-top: 0;
}

.content-section p, 
.content-section ul {
    margin-bottom: var(--space-lg);
    color: var(--text-secondary);
    line-height: 1.7;
}

.content-section ul {
    padding-left: var(--space-xl);
}

.content-section li {
    margin-bottom: var(--space-sm);
}

.content-section strong {
    color: var(--text-primary);
    font-weight: 600;
}

.content-section a {
    color: var(--primary-color);
    font-weight: 500;
    text-decoration: underline;
    text-decoration-color: transparent;
    transition: var(--transition-fast);
}

.content-section a:hover {
    text-decoration-color: var(--primary-color);
}

/* --- Footer --- */
footer {
    background: var(--gray-900);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--space-4xl) 0 var(--space-2xl);
    text-align: center;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gray-700), transparent);
}

.footer-links {
    margin-bottom: var(--space-2xl);
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-xl);
}

.footer-links a {
    color: var(--text-white);
    font-weight: 500;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-lg);
    transition: var(--transition-fast);
    text-decoration: none;
}

.footer-links a:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-white);
    transform: translateY(-2px);
}

.copyright {
    margin-bottom: var(--space-lg);
    font-size: 0.9rem;
    opacity: 0.8;
    color: var(--gray-400);
}

.footer-contact {
    font-size: 0.95rem;
}

.footer-contact a {
    color: var(--text-white);
    font-weight: 600;
    text-decoration: underline;
    text-decoration-color: transparent;
    transition: var(--transition-fast);
}

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

/* --- Modal Styles --- */
.modal {
    display: none;
    position: fixed;
    z-index: var(--z-modal);
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: var(--bg-primary);
    margin: 10% auto;
    padding: var(--space-3xl);
    border: none;
    width: 90%;
    max-width: 500px;
    border-radius: var(--radius-2xl);
    text-align: center;
    position: relative;
    animation: slideIn 0.4s ease;
    box-shadow: var(--shadow-2xl);
}

.close-button {
    color: var(--text-muted);
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    font-size: 24px;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition-fast);
    border-radius: var(--radius-full);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
}

.close-button:hover {
    background: var(--gray-100);
    color: var(--text-primary);
}

.modal-content h2 {
    margin-bottom: var(--space-lg);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.modal-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* --- Animations --- */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from { 
        transform: translateY(-50px);
        opacity: 0;
    }
    to { 
        transform: translateY(0);
        opacity: 1;
    }
}

/* --- Responsive Design --- */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--space-lg);
    }
    
    .services-grid {
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
        gap: var(--space-xl);
    }
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-normal);
        border-top: 1px solid var(--gray-200);
    }
    
    nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    nav ul {
        flex-direction: column;
        padding: var(--space-lg) 0;
        gap: 0;
    }
    
    nav li {
        width: 100%;
    }
    
    nav a {
        display: block;
        padding: var(--space-lg) var(--space-xl);
        border-radius: 0;
        border-bottom: 1px solid var(--gray-200);
        margin: 0;
    }
    
    nav a:last-child {
        border-bottom: none;
    }
    
    .hero {
        padding: calc(80px + var(--space-3xl)) var(--space-lg) var(--space-3xl);
        min-height: 80vh;
    }
    
    .hero h1 {
        font-size: clamp(2rem, 8vw, 3rem);
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .services-section {
        padding: var(--space-4xl) 0;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .service-card {
        padding: var(--space-xl);
    }
    
    .page-header {
        padding: calc(80px + var(--space-3xl)) var(--space-lg) var(--space-3xl);
    }
    
    .content-section {
        padding: var(--space-4xl) 0;
    }
    
    .content-section .container {
        padding: var(--space-xl);
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--space-lg);
    }
    
    .modal-content {
        margin: 20% auto;
        padding: var(--space-xl);
        width: 95%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .hero {
        padding: calc(80px + var(--space-2xl)) var(--space-md) var(--space-2xl);
    }
    
    .hero h1 {
        font-size: clamp(1.75rem, 8vw, 2.5rem);
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .cta-button {
        padding: var(--space-md) var(--space-xl);
        font-size: 1rem;
    }
    
    .services-section {
        padding: var(--space-3xl) 0;
    }
    
    .service-card {
        padding: var(--space-lg);
    }
    
    .content-section .container {
        padding: var(--space-lg);
    }
    
    .modal-content {
        padding: var(--space-lg);
        margin: 15% auto;
    }
    
    .page-header {
        padding: calc(80px + var(--space-2xl)) var(--space-md) var(--space-2xl);
    }
}

/* --- Utility Classes --- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

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

/* --- Focus States for Accessibility --- */
a:focus,
button:focus,
.mobile-menu-toggle:focus,
.service-card:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* --- Smooth Scrolling Enhancement --- */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

/* --- Print Styles --- */
@media print {
    header,
    footer,
    .modal,
    .mobile-menu-toggle {
        display: none !important;
    }
    
    .hero,
    .page-header {
        background: none !important;
        color: black !important;
    }
    
    .service-card {
        break-inside: avoid;
    }
}

/* --- High Contrast Mode --- */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #0000ff;
        --text-primary: #000000;
        --text-secondary: #000000;
        --bg-primary: #ffffff;
        --bg-secondary: #ffffff;
    }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}