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

body {
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 50%, #60a5fa 100%);
    min-height: 100vh;
    padding: 20px;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 25% 75%, rgba(59, 130, 246, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 75% 25%, rgba(147, 197, 253, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(30, 58, 138, 0.2) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    padding: 0 10px;
}

.header {
    text-align: center;
    margin-bottom: 40px;
    color: white;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
    letter-spacing: -0.02em;
}

.columns-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
    align-items: start;
}

.column {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(15px);
    border-radius: 20px;
    padding: 25px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    min-height: fit-content;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.column:hover {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.35);
    transform: translateY(-2px);
}

.column-header {
    text-align: center;
    margin-bottom: 20px;
    color: white;
}

.column-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 8px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.folder-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

a.project-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.folder-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 12px;
    padding: 18px;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    min-height: 65px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

a.project-link:hover .folder-card {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 6px 25px rgba(30, 58, 138, 0.15);
    background: rgba(255, 255, 255, 1);
}

.folder-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: #1e40af;
    line-height: 1.3;
    text-transform: capitalize;
    word-break: break-word;
}

.empty-column {
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    padding: 20px;
    font-style: italic;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    border: 1px dashed rgba(255, 255, 255, 0.2);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .columns-container {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 20px;
    }
    
    .container {
        max-width: 100%;
        padding: 0 15px;
    }
    
    .column {
        padding: 20px;
    }
}

@media (max-width: 768px) {
    .columns-container {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .header h1 {
        font-size: 2.2rem;
    }
    
    .column-title {
        font-size: 1.3rem;
    }
    
    .column {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 15px;
    }
    
    .container {
        padding: 0 5px;
    }
    
    .header h1 {
        font-size: 1.8rem;
    }
    
    .column-title {
        font-size: 1.2rem;
    }
    
    .column {
        padding: 15px;
    }
    
    .folder-card {
        padding: 15px;
        min-height: 55px;
    }
    
    .folder-name {
        font-size: 1rem;
    }
}