@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');



:root {
    /* Colors */
    --primary: #3b82f6;
    --primary-dark: #1d4ed8;
    --secondary: #8b5cf6;
    --accent: #f43f5e;
    --background: #ffffff;
    --surface: #f8fafc;
    --text-primary: #1e293b;
    --text-secondary: #64748b;

    /* Transitions */
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --background: #0f172a;
    --surface: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--background);
    color: var(--text-primary);
    transition: background-color var(--transition-normal);
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(15px);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-normal);
}

[data-theme="dark"] .nav {
    background: rgba(15, 23, 42, 0.8);
}

.nav-scrolled {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

/* Hero Section */
.hero {
    padding: 8rem 2rem 4rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    opacity: 0.1;
    transform: skewY(-6deg);
    transform-origin: top left;
}

.title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    position: relative;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: titleAnimation 1.5s ease-out;
}

.subtitle {
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 3rem;
    font-size: 1.25rem;
    line-height: 1.8;
    animation: fadeIn 1s ease-out 0.5s backwards;
}

/* Search and Filter */
.filters {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 3rem;
    animation: fadeIn 1s ease-out 0.7s backwards;
}

.search-bar {
    flex: 1;
    max-width: 400px;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid transparent;
    border-radius: 1rem;
    background: var(--surface);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-normal);
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.75rem;
    background: var(--surface);
    color: var(--text-primary);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
}

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

.filter-btn:hover:not(.active) {
    background: var(--primary-dark);
    color: white;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    padding: 1rem;
}

.project-card {
    background: var(--surface);
    border-radius: 1.5rem;
    padding: 2rem;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
    cursor: pointer;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

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

.project-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary);
    transition: all var(--transition-normal);
}

.project-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: 0.75rem;
    font-weight: 500;
    transition: all var(--transition-normal);
}

.project-link:hover {
    background: var(--primary-dark);
    transform: translateX(4px);
}

.project-stats {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.stat {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Theme Toggle */
.theme-toggle {
    padding: 0.75rem;
    border-radius: 0.75rem;
    background: var(--surface);
    border: none;
    cursor: pointer;
    color: var(--text-primary);
    transition: all var(--transition-normal);
}

.theme-toggle:hover {
    background: var(--primary);
    color: white;
    transform: rotate(180deg);
}

/* Animations */
@keyframes titleAnimation {
    0% {
        opacity: 0;
        transform: translateY(-20px);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .title {
        font-size: 2.5rem;
    }

    .subtitle {
        font-size: 1.1rem;
        padding: 0 1rem;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .filters {
        flex-direction: column;
        align-items: stretch;
    }

    .search-bar {
        max-width: none;
    }
}

/* Loading Animation */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--background);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    transition: opacity var(--transition-normal);
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--surface);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}