:root {
    --primary-color: #2563eb;
    --secondary-color: #7c3aed;
    --accent-color: #06b6d4;
    --dark-color: #0f172a;
    --light-color: #f8fafc;
    --gray-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    
    --card-bg: rgba(255, 255, 255, 0.95);
    --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

[data-theme="dark"] {
    --dark-color: #f8fafc;
    --light-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.95);
    --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--light-color);
    transition: var(--transition);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
.header {
    background-color: var(--card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.header.scrolled {
    padding: 0;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
    z-index: 1001;
}

.logo:hover {
    transform: scale(1.05);
}

.logo i {
    font-size: 2rem;
    color: var(--primary-color);
}

.logo-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    gap: 0.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu > li {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    padding: 0.75rem 1.25rem;
    border-radius: 10px;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.nav-link:hover {
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.nav-link.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.nav-link i {
    font-size: 1rem;
}

.nav-dropdown {
    position: relative;
}

.dropdown-icon {
    font-size: 0.8rem;
    margin-left: 4px;
    transition: transform 0.3s ease;
}

.nav-dropdown:hover .dropdown-icon {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 0.75rem 0;
    min-width: 220px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 1000;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0.75rem 1.5rem;
    color: var(--dark-color);
    text-decoration: none;
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    padding-left: 2rem;
}

.dropdown-item i {
    width: 20px;
    text-align: center;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.search-container {
    position: relative;
}

.search-box {
    display: flex;
    align-items: center;
    background: rgba(37, 99, 235, 0.05);
    border-radius: 50px;
    padding: 0.5rem 1rem;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.search-box:focus-within {
    border-color: var(--primary-color);
    background: var(--card-bg);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

#searchInput {
    border: none;
    background: transparent;
    padding: 0.25rem 0.5rem;
    width: 200px;
    color: var(--dark-color);
    outline: none;
}

#searchInput::placeholder {
    color: var(--gray-color);
}

.search-btn {
    background: none;
    border: none;
    color: var(--gray-color);
    cursor: pointer;
    padding: 0.25rem;
    transition: color 0.3s ease;
}

.search-btn:hover {
    color: var(--primary-color);
}

.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    margin-top: 0.5rem;
    padding: 0.5rem;
    display: none;
    z-index: 1001;
    max-height: 400px;
    overflow-y: auto;
}

.search-result {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 0.25rem;
    transition: background 0.2s ease;
}

.search-result:hover {
    background: rgba(37, 99, 235, 0.1);
}

.search-result a {
    text-decoration: none;
    color: var(--dark-color);
    display: block;
}

.result-title {
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.result-category {
    font-size: 0.8rem;
    color: var(--gray-color);
}

/* Button Styles */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
}

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

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Hero Section */
.hero {
    padding: 150px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-color);
    margin-bottom: 2rem;
}

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

/* Tabs Styles */
.tabs {
    background: var(--card-bg);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    margin-top: 2rem;
}

.tab-header {
    display: flex;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 0.5rem;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tab-link {
    flex: 1;
    min-width: 150px;
    padding: 1rem;
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 600;
    cursor: pointer;
    border-radius: 12px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.tab-link:hover,
.tab-link.active {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.tab-pane {
    display: none;
    padding: 2rem;
    animation: fadeIn 0.5s ease;
}

.tab-pane.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Project Cards */
.project-card {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 2rem;
    box-shadow: var(--card-shadow);
}

.project-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.project-icon {
    color: var(--primary-color);
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

.tag-lora {
    background-color: #dbeafe;
    color: #1d4ed8;
}

.tag-opensource {
    background-color: #dcfce7;
    color: #166534;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.feature {
    text-align: center;
    padding: 1.5rem;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 12px;
    transition: var(--transition);
}

.feature:hover {
    transform: translateY(-5px);
    background: rgba(37, 99, 235, 0.2);
}

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

/* Tech Cards */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.tech-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.tech-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.tech-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--dark-color), #1e293b);
    color: white;
    padding: 4rem 0 2rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: white;
}

.social-links {
    display: flex;
    gap: 1rem;
    font-size: 1.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--card-bg);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .tab-header {
        flex-direction: column;
    }
    
    .tab-link {
        min-width: 100%;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn-large {
        width: 100%;
        justify-content: center;
    }
}

/* Mesh Animation */
.mesh-animation {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 50%;
    height: 400px;
}

.node {
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.7);
    }
    70% {
        box-shadow: 0 0 0 20px rgba(37, 99, 235, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(37, 99, 235, 0);
    }
}