/* Custom Properties & Design System */
:root {
    /* Color Palette */
    --primary-color: #1a2b4a; /* Deep Navy Blue */
    --primary-dark: #0f1f3c;
    --accent-color: #007AFF; /* Bright Azure Blue */
    --accent-hover: #005ce6;
    --light-blue: #E8F4FF;
    --white: #FFFFFF;
    --text-main: #1a1a1a; /* Dark Charcoal */
    --text-muted: #666666;
    --bg-light: #f8fbff;
    
    /* Gradients */
    --grad-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    --grad-accent: linear-gradient(135deg, #007AFF 0%, #00C6FF 100%);
    
    /* Typography */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Easing */
    --ease-standard: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
    
    /* Transition Timings */
    --ts-fast: 300ms;
    --ts-med: 500ms;
    --ts-slow: 800ms;
}

@media (prefers-reduced-motion: reduce) {
    :root {
        --ts-fast: 0ms;
        --ts-med: 0ms;
        --ts-slow: 0ms;
    }
}

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

html {
    scroll-behavior: smooth;
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--primary-color);
    line-height: 1.2;
    font-weight: 700;
}

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

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-padding {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: clamp(32px, 4vw, 42px);
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.75rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--ts-fast) var(--ease-bounce);
    border: none;
    outline: none;
    will-change: transform, box-shadow;
}

.btn-primary {
    background: var(--accent-color);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(0, 122, 255, 0.3);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 122, 255, 0.4);
    color: var(--white);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    border-color: var(--white);
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
}

.glow-effect:hover {
    box-shadow: 0 0 20px rgba(0, 122, 255, 0.6);
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: all var(--ts-fast) var(--ease-standard);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.header.scrolled .logo,
.header.scrolled .nav-links a {
    color: var(--primary-color);
}

.header.scrolled .logo span {
    color: var(--accent-color);
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--white);
    letter-spacing: -0.5px;
}

.logo span {
    color: #80bfff;
    font-weight: 500;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width var(--ts-fast) var(--ease-standard);
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 24px;
    position: relative;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--primary-color);
    position: absolute;
    left: 0;
    transition: all var(--ts-fast) var(--ease-standard);
}

.header:not(.scrolled) .mobile-menu-btn span {
    background: var(--white);
}

.mobile-menu-btn span:nth-child(1) { top: 0; }
.mobile-menu-btn span:nth-child(2) { top: 11px; }
.mobile-menu-btn span:nth-child(3) { top: 22px; }

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg);
    top: 11px;
}
.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}
.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg);
    top: 11px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    background: var(--primary-color);
    overflow: hidden;
    color: var(--white);
    padding-top: 80px;
}

.hero-bg-animated {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--grad-primary);
    z-index: 0;
}

.hero-bg-animated::before {
    content: '';
    position: absolute;
    width: 150%;
    height: 150%;
    background: radial-gradient(circle at center, rgba(0,122,255,0.15) 0%, transparent 60%);
    top: -25%;
    left: -25%;
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.hero-container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: clamp(40px, 5vw, 64px);
    color: var(--white);
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.gradient-text {
    background: var(--grad-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: clamp(16px, 1.5vw, 20px);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2.5rem;
    max-width: 500px;
}

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

.hero-graphics {
    position: relative;
    height: 500px;
    perspective: 1000px;
}

.floating-shape {
    position: absolute;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
    will-change: transform;
}

.shape-1 {
    width: 300px;
    height: 350px;
    top: 50px;
    right: 50px;
    animation: float 6s ease-in-out infinite;
}

.shape-2 {
    width: 200px;
    height: 200px;
    bottom: 50px;
    left: 20px;
    border-radius: 50%;
    animation: float 8s ease-in-out infinite reverse;
}

.shape-3 {
    width: 150px;
    height: 150px;
    top: -20px;
    left: 100px;
    background: var(--grad-accent);
    opacity: 0.5;
    filter: blur(30px);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0); }
    50% { transform: translateY(-20px) rotate(2deg); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.7; }
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--white);
    padding: 3rem 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.03);
    transition: all var(--ts-med) var(--ease-bounce);
    border: 1px solid rgba(0,0,0,0.03);
    position: relative;
    overflow: hidden;
    will-change: transform, box-shadow;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--grad-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--ts-med) var(--ease-standard);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}

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

.service-icon {
    width: 60px;
    height: 60px;
    background: var(--light-blue);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--accent-color);
    transition: all var(--ts-fast) var(--ease-standard);
}

.service-card:hover .service-icon {
    background: var(--accent-color);
    color: var(--white);
    transform: scale(1.1) rotate(5deg);
}

.service-card h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.service-card p {
    color: var(--text-muted);
}

/* Portfolio Section */
.bg-light {
    background-color: var(--bg-light);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.portfolio-item {
    border-radius: 16px;
    overflow: hidden;
    background: var(--white);
    box-shadow: 0 10px 30px rgba(0,0,0,0.04);
    transition: transform var(--ts-med) var(--ease-bounce), box-shadow var(--ts-med) var(--ease-standard);
    will-change: transform, box-shadow;
    cursor: pointer;
}

.portfolio-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 45px rgba(0,0,0,0.1);
}

.portfolio-img-wrapper {
    position: relative;
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.portfolio-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--ts-med) var(--ease-standard);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 43, 74, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all var(--ts-fast) var(--ease-standard);
    backdrop-filter: blur(4px);
}

.portfolio-item:hover .portfolio-image {
    transform: scale(1.05);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.view-project-btn {
    transform: translateY(20px);
    opacity: 0;
    transition: all var(--ts-fast) var(--ease-bounce);
    transition-delay: 100ms;
}

.portfolio-item:hover .view-project-btn {
    transform: translateY(0);
    opacity: 1;
}

.portfolio-info {
    padding: 1.5rem;
}

.portfolio-info .category {
    font-size: 0.875rem;
    color: var(--accent-color);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
    display: inline-block;
}

.portfolio-info h3 {
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.portfolio-info p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* About Section */
.about {
    position: relative;
    color: var(--white);
    background: var(--primary-color);
    overflow: hidden;
}

.parallax-bg {
    background-attachment: fixed;
    background-image: linear-gradient(rgba(26, 43, 74, 0.92), rgba(26, 43, 74, 0.98)), url('data:image/svg+xml;utf8,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><rect width="100" height="100" fill="none"/><circle cx="50" cy="50" r="1.5" fill="rgba(255,255,255,0.15)"/></svg>');
}

.about-container {
    display: flex;
    justify-content: center;
    text-align: center;
}

.about-content {
    max-width: 800px;
}

.about-content h2 {
    color: var(--white);
    margin-bottom: 1.5rem;
    font-size: clamp(32px, 4vw, 42px);
}

.about-content p {
    font-size: 1.125rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 3rem;
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 3rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--accent-color);
    line-height: 1;
    margin-bottom: 0.5rem;
    text-shadow: 0 4px 20px rgba(0, 122, 255, 0.4);
}

.stat-number::after {
    content: '+';
    font-size: 2rem;
    vertical-align: super;
    margin-left: 2px;
}

.stat-item:nth-child(2) .stat-number::after {
    content: '%';
}

.stat-label {
    font-size: 0.95rem;
    color: rgba(255,255,255,0.7);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Contact Section */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.contact-info h2 {
    font-size: clamp(32px, 4vw, 48px);
    margin-bottom: 1.5rem;
}

.contact-info p {
    color: var(--text-muted);
    font-size: 1.125rem;
    margin-bottom: 2.5rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

.contact-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--bg-light);
    border-radius: 50%;
    color: var(--accent-color);
    transition: transform var(--ts-fast) var(--ease-bounce);
}

.contact-item:hover .contact-icon {
    transform: scale(1.1);
    background: var(--primary-color);
    color: var(--white);
}

.contact-item a {
    color: var(--text-color);
    font-size: 1.1rem;
    font-weight: 500;
    transition: color var(--ts-fast) ease;
}

.contact-item a:hover {
    color: var(--accent-color);
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--bg-light);
    border-radius: 50%;
    color: var(--primary-color);
    transition: all var(--ts-fast) var(--ease-bounce);
}

.social-links a:hover {
    background: var(--accent-color);
    color: var(--white);
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 122, 255, 0.2);
}

.contact-form {
    background: var(--white);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.06);
}

.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-main);
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    background: #fcfcfc;
    transition: all var(--ts-fast) ease;
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    background: var(--white);
    border-color: transparent;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.focus-border {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--grad-accent);
    transition: width var(--ts-fast) var(--ease-standard);
    border-radius: 0 0 8px 8px;
}

.form-group input:focus + .focus-border,
.form-group textarea:focus + .focus-border {
    width: 100%;
}

.btn-submit {
    width: 100%;
    margin-top: 1rem;
}

/* Footer */
.footer {
    background: var(--primary-dark);
    color: rgba(255,255,255,0.6);
    padding: 2rem 0;
    text-align: center;
}

/* Animations & Interaction Classes */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--ts-slow) var(--ease-standard), transform var(--ts-slow) var(--ease-standard);
    will-change: opacity, transform;
}

.fade-in {
    opacity: 0;
    transition: opacity var(--ts-slow) var(--ease-standard);
    will-change: opacity;
}

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

.staggered-1 { transition-delay: 100ms; }
.staggered-2 { transition-delay: 200ms; }
.staggered-3 { transition-delay: 300ms; }
.staggered-4 { transition-delay: 400ms; }

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-content {
        order: 2;
    }
    .hero-content p {
        margin: 0 auto 2.5rem;
    }
    .hero-actions {
        justify-content: center;
    }
    .hero-graphics {
        order: 1;
        height: 350px;
    }
    .shape-1 { right: 20%; top: 20px; }
    .shape-2 { left: 20%; bottom: 20px; }
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .contact-info {
        text-align: center;
    }
    .social-links {
        justify-content: center;
    }
    .portfolio-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    .nav-links, .nav-cta {
        display: none;
    }
    .mobile-menu-btn {
        display: block;
    }
    .section-padding {
        padding: 4rem 0;
    }
    .stats-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .contact-form {
        padding: 2rem;
    }
    .portfolio-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
    
    /* Mobile Menu Active State */
    .nav-links.active {
        display: flex !important;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--white);
        padding: 2rem;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        text-align: center;
        gap: 1.5rem;
    }
    .nav-links.active a {
        color: var(--primary-color);
        font-size: 1.125rem;
        width: 100%;
        display: block;
    }
    .nav-links.active a::after {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    .btn {
        width: 100%;
    }
    .section-header h2 {
        font-size: 28px;
    }
    .hero-graphics {
        height: 250px;
    }
    .shape-1 { width: 150px; height: 180px; }
    .shape-2 { width: 120px; height: 120px; }
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
}