:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --bg-color: #ffffff;
    --bg-alt: #f8fafc;
    --text-color: #1e293b;
    --text-light: #64748b;
    --border-color: #e2e8f0;
    --card-bg: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius: 0.75rem;
    --transition: all 0.3s ease;
}

[data-theme="dark"] {
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --secondary-color: #94a3b8;
    --bg-color: #0f172a;
    --bg-alt: #1e293b;
    --text-color: #f8fafc;
    --text-light: #cbd5e1;
    --border-color: #334155;
    --card-bg: #1e293b;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

/* Loader */
.loader-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader {
    width: 48px;
    height: 48px;
    border: 5px solid var(--primary-color);
    border-bottom-color: transparent;
    border-radius: 50%;
    animation: rotation 1s linear infinite;
}

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

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

/* Typography & Utilities */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-light);
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius);
}

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

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

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

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

.btn-outline {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background-color: transparent;
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.btn-block {
    display: block;
    width: 100%;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.1rem;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    padding: 1rem 0;
    transition: background-color 0.3s ease;
}

[data-theme="dark"] .navbar {
    background-color: rgba(15, 23, 42, 0.9);
    border-bottom: 1px solid var(--border-color);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-color);
}

.logo span {
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-color);
    font-size: 0.95rem;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--primary-color);
}

.theme-btn {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition);
}

.theme-btn:hover {
    background-color: var(--bg-alt);
    color: var(--primary-color);
}

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

/* Hero Section */
.hero {
    padding: 8rem 0 4rem;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--bg-alt) 0%, var(--bg-color) 100%);
}

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

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.hero-content .highlight {
    color: var(--primary-color);
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    max-width: 500px;
}

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

.hero-image img {
    width: 100%;
    border-radius: var(--radius);
    box-shadow: var(--shadow-hover);
    animation: float 6s ease-in-out infinite;
}

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

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

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

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.values-list {
    margin-top: 2rem;
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.value-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.value-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    background-color: var(--bg-alt);
    padding: 1rem;
    border-radius: 50%;
}

.value-item h4 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.value-item p {
    font-size: 0.9rem;
    margin-bottom: 0;
}

.about-image img {
    box-shadow: var(--shadow);
}

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

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

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

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-color);
}

.service-card .icon-box {
    width: 60px;
    height: 60px;
    background-color: rgba(37, 99, 235, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.service-card .icon-box i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

/* Portfolio Section */
.portfolio {
    padding: 6rem 0;
    background-color: var(--bg-color);
}

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

.portfolio-item {
    background-color: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

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

.portfolio-img {
    overflow: hidden;
    height: 200px;
}

.portfolio-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.portfolio-item:hover .portfolio-img img {
    transform: scale(1.1);
}

.portfolio-info {
    padding: 1.5rem;
}

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

.portfolio-info .tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.portfolio-info .tags span {
    font-size: 0.75rem;
    background-color: var(--bg-alt);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    color: var(--text-light);
    border: 1px solid var(--border-color);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
}

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

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

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    background-color: var(--card-bg);
    padding: 3rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

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

.info-item i {
    width: 40px;
    height: 40px;
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.info-item h4 {
    font-size: 1rem;
    margin-bottom: 0;
}

.info-item p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background-color: var(--bg-alt);
    color: var(--text-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.social-links a:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
}

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

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Footer */
footer {
    background-color: var(--bg-color);
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 2rem;
}

.footer-logo h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.footer-logo span {
    color: var(--primary-color);
}

.footer-links ul {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

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

.footer-bottom {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    width: 100%;
    font-size: 0.9rem;
    color: var(--text-light);
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero .container,
    .about-grid,
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .hero {
        text-align: center;
        padding-top: 7rem;
    }

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

    .hero-content p {
        margin-left: auto;
        margin-right: auto;
    }

    .about-image {
        order: -1;
    }
}

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

    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background-color: var(--bg-color);
        flex-direction: column;
        padding: 2rem;
        box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        transition: var(--transition);
        border-bottom: 1px solid var(--border-color);
    }

    .nav-links.active {
        left: 0;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-btns {
        flex-direction: column;
    }
    
    .contact-wrapper {
        padding: 1.5rem;
    }
}