/* ========================================
   CSS Variables & Root Styles
   ======================================== */

:root {
    /* Colors */
    --primary-blue: #1E88E5;
    --accent-primary: #8B5CF6; 
    --dark-gray: #4A4A4A;
    --black: #1A1A1A;
    --light-bg: #F5F7FA;
    --white: #FFFFFF;
    --text-dark: #2C2C2C;
    --text-light: #666666;
    
    /* Typography */
    --font-display: 'Poppins', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(26, 26, 26, 0.08);
    --shadow-md: 0 8px 24px rgba(26, 26, 26, 0.12);
    --shadow-lg: 0 16px 40px rgba(26, 26, 26, 0.16);

    --color-background: #ffffff;
    --color-text: #1a1a1a;
    --color-primary: #007bff;
    --color-secondary-bg: #f8f9fa;
    --color-border: #dee2e6;
    --color-card-bg: #ffffff;
}

/* ========================================
   Global Styles
   ======================================== */

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

html {
    scroll-behavior: smooth;
}

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

    background-color: var(--color-background);
    color: var(--color-text);
    transition: background-color 0.3s, color 0.3s; /* Smooth transition */

}

/* Dark Mode Styles */
body.dark {
    --bg-color: #1e1e1e;
    --text-color: #e0e0e0;
    --nav-bg: #2d2d2d;
    --link-color: #bbbbbb;
    --border-color: #444444;
}

/* ========================================
   Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: clamp(2.5rem, 8vw, 4.5rem); }
h2 { font-size: clamp(1.8rem, 5vw, 3.2rem); }
h3 { font-size: clamp(1.3rem, 3vw, 1.8rem); }
h4 { font-size: 1.1rem; }

p {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--accent-primary);
}

/* ========================================
   Buttons
   ======================================== */

.cta-button {
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: 8px;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-base);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.cta-button.primary {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-primary) 100%);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.cta-button.primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.cta-button.primary:active {
    transform: translateY(-1px);
}

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

.cta-button.secondary:hover {
    background: var(--primary-blue);
    color: var(--white);
}

/* ========================================
   Navigation
   ======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(30, 136, 229, 0.1);
    padding: var(--spacing-md) 0;
    animation: slideDown 0.5s ease;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--black);
    transition: transform var(--transition-base), color var(--transition-base);
    cursor: pointer;
    text-decoration: none;
}

.logo:hover {
    transform: scale(1.05);
    color: var(--primary-blue);
}

.logo svg,
.logo-svg {
    width: 40px;
    height: 40px;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
    transition: filter var(--transition-base);
}

.logo:hover .logo-svg {
    filter: drop-shadow(0 2px 8px rgba(30, 136, 229, 0.3));
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-2xl);
}

.nav-menu a {
    font-weight: 500;
    color: var(--text-dark);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-blue), var(--accent-primary));
    transition: width var(--transition-base);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--black);
    border-radius: 2px;
    transition: all var(--transition-base);
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
    background: linear-gradient(135deg, var(--light-bg) 0%, #FFFFFF 50%, #F0F7FF 100%);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.geometric-layer {
    position: absolute;
    opacity: 0.08;
}

.layer-1 {
    width: 600px;
    height: 600px;
    background: linear-gradient(45deg, var(--primary-blue), transparent);
    border-radius: 50%;
    top: -200px;
    right: -100px;
    animation: float 8s ease-in-out infinite;
}

.layer-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--accent-primary), transparent);
    border-radius: 50%;
    bottom: 100px;
    left: -50px;
    animation: float 10s ease-in-out infinite;
    animation-delay: 0.5s;
}

.layer-3 {
    width: 500px;
    height: 500px;
    background: linear-gradient(90deg, var(--dark-gray), transparent);
    clip-path: polygon(0 0, 100% 0, 80% 100%, 0% 100%);
    top: 50%;
    right: 10%;
    animation: slide 12s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(30px); }
}

@keyframes slide {
    0%, 100% { transform: translateX(0px); }
    50% { transform: translateX(-40px); }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    text-align: center;
    padding: var(--spacing-2xl);
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    color: var(--black);
    margin-bottom: var(--spacing-lg);
}

.hero-title .accent {
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.8;
}

.hero-shapes {
    position: absolute;
    z-index: 1;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.shape {
    position: absolute;
    border: 2px solid var(--primary-blue);
    opacity: 0.1;
    animation: rotateShape 15s linear infinite;
}

.shape-1 {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    top: 10%;
    left: 5%;
}

.shape-2 {
    width: 150px;
    height: 150px;
    clip-path: polygon(50% 0%, 100% 38%, 82% 100%, 18% 100%, 0% 38%);
    bottom: 15%;
    right: 10%;
    animation-delay: 0.5s;
}

.shape-3 {
    width: 250px;
    height: 250px;
    clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
    top: 50%;
    right: 5%;
    animation-delay: 1s;
}

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

/* ========================================
   Section Styling
   ======================================== */

section {
    padding: var(--spacing-2xl) var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    animation: fadeInUp 0.8s ease both;
}

.section-header h2 {
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--accent-primary));
    border-radius: 2px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-top: var(--spacing-lg);
}

/* ========================================
   Services Section
   ======================================== */

.services {
    background: var(--light-bg);
    position: relative;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.service-card {
    background: var(--color-card-bg);
    padding: var(--spacing-2xl);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.6s ease both;
    border: 1px solid var(--color-border);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--accent-primary));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

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

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

.service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, rgba(30, 136, 229, 0.1), rgba(0, 188, 212, 0.1));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    transition: all var(--transition-base);
}

.service-card:hover .service-icon {
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-primary));
    transform: rotate(10deg) scale(1.1);
}

.service-card:hover .service-icon svg {
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

.service-card h3 {
    color: var(--black);
    margin-bottom: var(--spacing-md);
}

.service-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
    margin: 0;
}

/* ========================================
   Portfolio Section
   ======================================== */

.portfolio {
    background: var(--white);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    aspect-ratio: 1 / 1;
    animation: fadeInUp 0.6s ease both;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.portfolio-item:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow-lg);
}

.portfolio-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.portfolio-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 30%, rgba(26, 26, 26, 0.1) 60%, transparent 100%);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(26, 26, 26, 0.8) 0%, rgba(30, 136, 229, 0.5) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-align: center;
    padding: var(--spacing-lg);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.portfolio-overlay h4 {
    margin: 0 0 var(--spacing-sm) 0;
}

.portfolio-overlay p {
    margin: 0;
    font-size: 0.9rem;
}

/* ========================================
   CTA Section
   ======================================== */

.cta {
    background: linear-gradient(135deg, var(--black) 0%, #2A2A2A 50%, var(--dark-gray) 100%);
    color: var(--white);
    position: relative;
    overflow: hidden;
    padding: var(--spacing-2xl) var(--spacing-lg);
    text-align: center;
}

.cta-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    margin: 0 auto;
    animation: fadeInUp 0.8s ease both;
}

.cta h2 {
    color: var(--white);
    margin-bottom: var(--spacing-lg);
    font-size: clamp(1.8rem, 5vw, 2.8rem);
}

.cta p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-2xl);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

.cta-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.shape-4 {
    position: absolute;
    width: 300px;
    height: 300px;
    border: 2px solid rgba(0, 188, 212, 0.2);
    border-radius: 50%;
    top: -100px;
    right: -100px;
    animation: float 8s ease-in-out infinite;
}

.shape-5 {
    position: absolute;
    width: 250px;
    height: 250px;
    border: 2px solid rgba(30, 136, 229, 0.2);
    clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
    bottom: -50px;
    left: 10%;
    animation: rotateShape 12s linear infinite;
}

/* ========================================
   Footer
   ======================================== */

.footer {
    background: var(--black);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-2xl) var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    position: relative;
    z-index: 2;
}

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

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

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

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-base);
}

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

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    border-top: 1px solid rgba(30, 136, 229, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
    position: relative;
    z-index: 2;
}

.geometric-footer-decoration {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--primary-blue), transparent);
    margin-bottom: var(--spacing-md);
}

/* ========================================
   Animations
   ======================================== */

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Scroll-triggered animations */
.fade-in-on-scroll {
    opacity: 0;
    transform: translateY(30px);
}

.fade-in-on-scroll.visible {
    animation: fadeInUp 0.6s ease forwards;
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    section {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .hero {
        padding-top: 70px;
        min-height: auto;
        padding-bottom: var(--spacing-2xl);
    }

    .hero-content {
        padding: var(--spacing-lg);
    }

    .services-grid,
    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    .service-card {
        padding: var(--spacing-xl);
    }

    .cta-buttons {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .cta-button {
        width: 100%;
        text-align: center;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

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

    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
        --spacing-2xl: 2.5rem;
    }

    h1 { font-size: 1.8rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.1rem; }

    .nav-container {
        padding: 0 var(--spacing-md);
    }

    .logo {
        font-size: 1.2rem;
    }

    .logo svg {
        width: 30px;
        height: 30px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .cta-button {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 0.9rem;
    }

    .section-header p {
        font-size: 1rem;
    }

    .service-card {
        padding: var(--spacing-lg);
    }

    .shape {
        display: none;
    }

    .layer-1, .layer-2, .layer-3 {
        opacity: 0.04;
    }
}

/* ========================================
   Print Styles
   ======================================== */

@media print {
    .navbar,
    .cta-shapes,
    .hero-shapes {
        display: none;
    }

    body {
        background: var(--white);
    }
}