/* CSS Custom Properties */
:root {
    --color-primary: #3b82f6;
    --color-primary-light: #60a5fa;
    --color-primary-dark: #2563eb;
    --color-primary-darker: #1d4ed8;
    --color-primary-darkest: #1e40af;
    --color-secondary: #06b6d4;
    --color-accent: #a855f7;
    --color-success: #10b981;
    --color-text: #f1f5f9;
    --color-text-muted: #e2e8f0;
    --color-text-dark: #94a3b8;
    --color-bg: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    --color-bg-dark: linear-gradient(135deg, #020617 0%, #0f172a 100%);
    --color-bg-darker: rgba(15, 23, 42, 0.98);
    --color-bg-darkest: #020617;
    --color-border: rgba(148, 163, 184, 0.1);
    --color-glass: rgba(255, 255, 255, 0.03);
    --color-glass-border: rgba(255, 255, 255, 0.08);
    
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 32px;
    --space-xl: 48px;
    --space-xxl: 96px;
    --space-3xl: 128px;
    
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-xxl: 24px;
    --font-size-3xl: 36px;
    --font-size-4xl: 48px;
    
    --radius: 5px;
    --radius-lg: 10px;
    --transition: 0.3s ease;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 8px 32px rgba(0, 0, 0, 0.16);
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.2);
    --glow: 0 0 10px rgba(59, 130, 246, 0.15);
    --glow-lg: 0 0 20px rgba(59, 130, 246, 0.25);
    --glow-accent: 0 0 15px rgba(168, 85, 247, 0.2);
}

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

html {
    scroll-behavior: smooth;
    background: #0f172a;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    background-attachment: fixed;
    background-color: #0f172a;
    position: relative;
    overflow-x: hidden;
    min-width: 320px;
    min-height: 100vh;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(168, 85, 247, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(6, 182, 212, 0.05) 0%, transparent 50%);
    z-index: -1;
    pointer-events: none;
    animation: float 30s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: scale(1) translate(0, 0); }
    33% { transform: scale(1.05) translate(20px, -20px); }
    66% { transform: scale(0.95) translate(-20px, 20px); }
}


/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Typography */
h1 { 
    font-size: var(--font-size-4xl); 
    font-weight: 700; 
    margin-bottom: var(--space-md); 
}
h2 { 
    font-size: var(--font-size-3xl); 
    font-weight: 700; 
    margin-bottom: var(--space-md);
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    display: inline-block;
    width: 100%;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: 2px;
}
h3 { 
    font-size: var(--font-size-xxl); 
    font-weight: 600; 
    margin-bottom: var(--space-sm); 
}
p { 
    margin-bottom: var(--space-sm);
    line-height: 1.8;
    font-weight: 300;
}

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

a:hover {
    text-decoration: underline;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px var(--space-xl);
    font-weight: 600;
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border: none;
    text-decoration: none;
    position: relative;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
    text-transform: none;
    letter-spacing: 0.2px;
    font-size: 15px;
    font-weight: 500;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.6s;
}

.btn-primary::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 40%, rgba(255, 255, 255, 0.1) 50%, transparent 60%);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary-darker) 100%);
    transform: translateY(-2px);
    text-decoration: none;
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover::after {
    transform: translateX(100%);
}

.btn-primary:active {
    transform: translateY(-1px) scale(1);
}

.btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-primary);
    color: white;
    text-decoration: none;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    background: var(--color-bg-darker);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--color-glass-border);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav {
    display: flex;
    align-items: center;
    height: 80px;
    position: relative;
}

.nav-logo {
    text-decoration: none;
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1001;
    padding-left: var(--space-md);
}

.header-logo {
    height: var(--space-xl);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-lg);
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav-link {
    color: var(--color-text);
    font-weight: 500;
    text-decoration: none;
    position: relative;
    transition: color 0.3s ease;
    padding: 8px 0;
    letter-spacing: 0.5px;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover {
    color: var(--color-primary-light);
    text-decoration: none;
}

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

.mobile-menu {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 4px;
    padding: 10px;
    z-index: 1002;
}

.mobile-menu span {
    width: 25px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
    display: block;
}

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

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

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: var(--color-bg);
    isolation: isolate;
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: url('assets/icon-transparency.png') no-repeat center center;
    background-size: 1000px;
    opacity: 0.30;
    z-index: -1;
    pointer-events: none;
    width: 1000px;
    height: 1000px;
    filter: blur(1px);
}


.hero h1 {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--space-md);
}

.accent {
    color: var(--color-primary);
}

.hero p {
    font-size: var(--font-size-xl);
    color: var(--color-text-dark);
    margin-bottom: var(--space-lg);
    animation: fadeInUp 0.8s ease-out 0.1s both;
}

.hero-logo {
    height: 150px;
    margin-bottom: var(--space-lg);
    filter: brightness(1.2) contrast(1.1) drop-shadow(0 2px 8px rgba(59, 130, 246, 0.3));
    opacity: 0.95;
    animation: fadeInUp 0.8s ease-out;
    transition: all var(--transition);
}

.hero-logo:hover {
    filter: brightness(1.3) contrast(1.15) drop-shadow(0 4px 12px rgba(59, 130, 246, 0.4));
    transform: translateY(-2px);
    opacity: 1;
}

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

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

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

.hero .btn-primary:hover {
    background: var(--color-primary-darkest);
}

/* Services */
.section {
    padding: var(--space-3xl) 0;
    background: var(--color-bg);
    position: relative;
}

.section-dark {
    background: var(--color-bg-dark);
    position: relative;
    overflow: hidden;
}

.section-dark::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 25% 25%, rgba(59, 130, 246, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 75% 75%, rgba(168, 85, 247, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(6, 182, 212, 0.03) 0%, transparent 50%);
    pointer-events: none;
    animation: rotate 40s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.section-center {
    text-align: center;
}

.subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    margin-bottom: var(--space-xl);
    letter-spacing: 0.3px;
    line-height: 1.8;
    font-weight: 300;
}

.grid {
    display: grid;
    gap: var(--space-lg);
}

.grid-auto {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
    background: var(--color-glass);
    backdrop-filter: blur(10px) saturate(180%);
    -webkit-backdrop-filter: blur(10px) saturate(180%);
    padding: var(--space-xl);
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--color-glass-border);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent,
        var(--color-primary-light) 20%,
        var(--color-secondary) 50%,
        var(--color-primary-light) 80%,
        transparent
    );
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), 
        rgba(59, 130, 246, 0.1),
        transparent 40%
    );
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl), inset 0 0 0 1px rgba(59, 130, 246, 0.2);
    border-color: rgba(59, 130, 246, 0.2);
}

.card:hover::before {
    transform: translateX(100%);
}

.card:hover::after {
    opacity: 1;
}

.card h3 {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-sm);
    font-weight: 600;
}

.card-list {
    list-style: none;
    padding-left: 0;
}

.card-list li {
    padding: 5px 0;
    padding-left: var(--space-md);
    position: relative;
}

.card-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
    transition: transform 0.3s ease;
}

.card:hover .card-list li::before {
    transform: translateX(5px);
}

/* About - uses utility classes */


/* Footer */
footer {
    background: var(--color-bg-darkest);
    color: var(--color-text-muted);
    padding: var(--space-xxl) 0 var(--space-xl);
    border-top: 1px solid var(--color-glass-border);
    position: relative;
    margin-top: var(--space-3xl);
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
    text-align: left;
}

.footer-section h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.footer-logo {
    height: 50px;
    margin-bottom: var(--space-sm);
    filter: brightness(3) contrast(1.2) drop-shadow(0 2px 8px rgba(59, 130, 246, 0.6));
    opacity: 0.9;
    transition: all var(--transition);
}

.footer-logo:hover {
    filter: brightness(4) contrast(1.3) drop-shadow(0 4px 12px rgba(59, 130, 246, 0.8));
    transform: translateY(-2px);
    opacity: 1;
}

.footer-tagline {
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text-dark);
}

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

.footer-links li {
    margin-bottom: var(--space-xs);
}

.footer-links a {
    color: var(--color-text-muted);
    font-size: 14px;
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--color-primary);
    text-decoration: none;
}


.footer-bottom {
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    text-align: center;
}

.footer-links-bottom a {
    color: var(--color-text-muted);
    transition: color var(--transition);
}

.footer-links-bottom a:hover {
    color: var(--color-primary);
    text-decoration: none;
}

/* Responsive */
@media (max-width: 768px) {
    :root {
        --font-size-4xl: 32px;
        --font-size-3xl: 24px;
        --font-size-xxl: 20px;
        --font-size-xl: 18px;
        --space-xxl: 60px;
        --space-xl: 30px;
        --space-lg: 20px;
        --space-md: 15px;
    }
    
    .container {
        padding: 0 var(--space-sm);
    }
    
    .nav {
        height: 60px;
        padding: 0;
    }
    
    .nav-logo {
        padding-left: var(--space-sm);
    }
    
    .header-logo {
        height: 30px;
    }
    
    .nav-menu {
        position: fixed;
        top: 60px;
        right: -100%;
        width: 100%;
        height: calc(100vh - 60px);
        background: var(--color-bg-darker);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: var(--space-lg);
        transition: var(--transition);
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.3);
        left: auto;
        transform: none;
        gap: var(--space-md);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .mobile-menu {
        display: flex;
        position: absolute;
        right: var(--space-sm);
        top: 50%;
        transform: translateY(-50%);
    }
    
    .hero {
        min-height: 100vh;
        padding-top: 80px;
        padding-bottom: var(--space-xl);
        overflow: hidden;
        background: var(--color-bg);
        isolation: isolate;
    }
    
    .hero::before {
        background-size: 600px;
        width: 600px;
        height: 600px;
    }
    
    .hero-logo {
        height: 80px;
        margin-bottom: var(--space-md);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-sm);
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
    }
    
    .hero-buttons .btn {
        width: 100%;
        text-align: center;
    }
    
    .section {
        padding: var(--space-xl) 0;
    }
    
    .grid-auto {
        grid-template-columns: 1fr;
    }
    
    
    .card {
        padding: var(--space-md);
    }
    
    .subtitle {
        margin-bottom: var(--space-lg);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-sm);
    }
}

/* Loader */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg-darkest);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-spinner {
    width: 40px;
    height: 40px;
    position: relative;
}

.loader-spinner::before,
.loader-spinner::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 2px solid transparent;
    border-top-color: var(--color-primary);
    animation: spin 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
}

.loader-spinner::after {
    inset: 6px;
    border-top-color: var(--color-secondary);
    animation-delay: 0.4s;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Extra small devices */
@media (max-width: 480px) {
    :root {
        --font-size-4xl: 28px;
        --font-size-3xl: 22px;
        --font-size-xxl: 18px;
        --font-size-xl: 16px;
        --font-size-base: 14px;
    }
    
    .hero {
        padding-top: 70px;
    }
    
    .hero-logo {
        height: 60px;
    }
    
    .btn {
        padding: 10px var(--space-md);
        font-size: var(--font-size-base);
    }
    
    h2 {
        font-size: var(--font-size-xxl);
    }
    
    h3 {
        font-size: var(--font-size-lg);
    }
}