/* Base styles and variables */
:root {
    /* Light theme colors */
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --accent-color: #14b8a6;
    --accent-dark: #0d9488;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --background: #ffffff;
    --background-alt: #f8fafc;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --error-color: #ef4444;
    --card-background: #ffffff;
    --navbar-background: rgba(255, 255, 255, 0.9);
    --footer-background: #1f2937;
    --footer-text: #ffffff;
    --hero-gradient-start: var(--background-alt);
    --hero-gradient-end: white;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

/* Dark theme colors */
[data-theme="dark"] {
    --primary-color: #818cf8;
    --primary-dark: #6366f1;
    --primary-light: #a5b4fc;
    --text-color: #f3f4f6;
    --text-light: #9ca3af;
    --background: #111827;
    --background-alt: #1f2937;
    --border-color: #374151;
    --card-background: #1f2937;
    --navbar-background: rgba(17, 24, 39, 0.9);
    --footer-background: #0f172a;
    --footer-text: #f3f4f6;
    --hero-gradient-start: #1f2937;
    --hero-gradient-end: #111827;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.4);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4);
}

/* Reset and base styles */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--background);
}

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

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Space Grotesk', sans-serif;
    line-height: 1.2;
    margin-bottom: 1rem;
}

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

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.01em;
}

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

/* Navigation */
#navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--navbar-background);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

#navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
}

/* Logo Animation */
@keyframes logoSpin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo:hover .logo-svg {
    animation: logoSpin 1s ease-in-out;
}

.logo-svg {
    height: 2rem;
    width: auto;
    transition: var(--transition);
}

.nav-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    position: relative;
}

.nav-links a:not(.nav-cta):hover {
    color: var(--primary-color);
    background: var(--background-alt);
}

.nav-links .nav-cta {
    background: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
}

.nav-links .nav-cta:hover {
    background: var(--primary-dark);
    color: white;
}

/* Hero Section */
.hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, var(--hero-gradient-start) 0%, var(--hero-gradient-end) 100%);
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 600px;
    margin-bottom: 3rem;
    position: relative;
    z-index: 2;
}

.hero h1 {
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

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

.cta-button {
    display: inline-flex;
    align-items: center;
    padding: 1rem 2rem;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 0.5rem;
    font-weight: 600;
    transition: var(--transition);
}

.cta-button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

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

.cta-button.secondary:hover {
    background: var(--background-alt);
    border-color: var(--text-color);
}

.hero-image {
    position: relative;
    z-index: 2;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.hero-image img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

.hero-pattern {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background-image: radial-gradient(var(--primary-light) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.1;
    z-index: 1;
}

/* Services Section */
.services {
    padding: 6rem 0;
    background: var(--background);
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 4rem;
}

.section-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--background-alt);
    color: var(--primary-color);
    border-radius: 2rem;
    font-weight: 500;
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--card-background);
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    border-color: var(--primary-light);
}

.service-icon {
    width: 3rem;
    height: 3rem;
    background: var(--primary-color);
    color: white;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.service-icon i {
    font-size: 1.5rem;
}

.service-features {
    list-style: none;
    margin-top: 1rem;
}

.service-features li {
    padding: 0.5rem 0;
    color: var(--text-light);
    font-size: 0.875rem;
}

.service-features li::before {
    content: "•";
    color: var(--primary-color);
    font-weight: bold;
    margin-right: 0.5rem;
}

/* About Section */
.about {
    padding: 6rem 0;
    background: var(--background-alt);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-image {
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.expertise-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--background);
    border-radius: 1rem;
    transition: var(--transition);
}

.expertise-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.expertise-item i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.expertise-item h4 {
    margin-bottom: 0.5rem;
}

.expertise-item p {
    color: var(--text-light);
    font-size: 0.875rem;
}

/* Projects Section */
.projects {
    padding: 6rem 0;
    background: var(--background);
}

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

.project-card {
    background: var(--background);
    border-radius: 1rem;
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.project-image {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(99, 102, 241, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.project-overlay i {
    font-size: 3rem;
    color: white;
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-content {
    padding: 2rem;
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    margin: 1rem 0;
}

.project-tags span {
    padding: 0.25rem 0.75rem;
    background: var(--background-alt);
    color: var(--primary-color);
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 500;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.project-link:hover {
    gap: 0.75rem;
}

/* Contact Section */
.contact {
    padding: 6rem 0;
    background: var(--background-alt);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info p {
    color: var(--text-light);
    margin-bottom: 2rem;
}

.contact-details {
    display: grid;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-item i {
    width: 2.5rem;
    height: 2.5rem;
    background: var(--primary-color);
    color: white;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-form {
    background: var(--card-background);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-family: inherit;
    transition: var(--transition);
    background: var(--background);
    color: var(--text-color);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

.submit-button {
    width: 100%;
    padding: 1rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.submit-button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.submit-button i {
    transition: var(--transition);
}

.submit-button:hover i {
    transform: translateX(4px);
}

/* Footer */
.footer {
    background: var(--footer-background);
    color: var(--footer-text);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand p {
    color: var(--text-light);
    margin-top: 1rem;
}

.footer h4 {
    margin-bottom: 1.5rem;
    color: var(--footer-text);
}

.footer-links ul,
.footer-services ul {
    list-style: none;
}

.footer-links a,
.footer-services a {
    color: var(--text-light);
    text-decoration: none;
    padding: 0.5rem 0;
    display: block;
    transition: var(--transition);
}

.footer-links a:hover,
.footer-services a:hover {
    color: var(--footer-text);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 2.5rem;
    height: 2.5rem;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate {
    animation: fadeIn 0.6s ease-out forwards;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--background);
        padding: 1rem;
        flex-direction: column;
        text-align: center;
        box-shadow: var(--shadow);
    }

    .nav-links.active {
        display: flex;
    }

    .hero {
        padding: 6rem 0 3rem;
    }

    .hero-content {
        text-align: center;
        margin: 0 auto 3rem;
    }

    .hero-cta {
        justify-content: center;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    .services-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }

    .expertise-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

/* Add smooth transition for color scheme changes */
body * {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Dark mode toggle button */
.theme-toggle {
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-right: 1rem;
    border-radius: 0.5rem;
    transition: var(--transition);
}

.theme-toggle:hover {
    background: var(--background-alt);
}