:root{--primary: #0E2A47;--primary-light: #EEF2FF;--secondary: #8C8F94;--secondary-light: #F1F5F9;--accent: #F59E0B;--text: #1E293B;--text-muted: #64748B;--bg: #F8FAFC;--white: #FFFFFF;--border: #E2E8F0;--shadow: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--header-height: 80px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,system-ui,-apple-system,sans-serif;background-color:var(--background);color:var(--text-main);line-height:1.5;-webkit-font-smoothing:antialiased}.app-container{min-height:100vh;display:flex;flex-direction:column}.header{background:var(--surface);box-shadow:var(--shadow-sm);padding:1rem 2rem;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:10}.header-logo{font-size:1.5rem;font-weight:700;color:var(--primary);text-decoration:none;display:flex;align-items:center;gap:.5rem}.main-content{flex:1;padding:2rem;max-width:1200px;margin:0 auto;width:100%}.page-title{font-size:2rem;font-weight:800;margin-bottom:.5rem;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.page-subtitle{color:var(--text-muted);margin-bottom:2rem;font-size:1.1rem}.card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow-md);padding:1.5rem;transition:transform .2s ease,box-shadow .2s ease}.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.dnd-container{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem;margin-top:2rem}.dnd-column{background:#f9fafb;border-radius:var(--radius);padding:1.5rem;min-height:400px;border:2px dashed var(--border)}.dnd-column-title{font-size:1.25rem;font-weight:600;margin-bottom:1rem;color:var(--text-main);display:flex;align-items:center;gap:.5rem}.dnd-item{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:1rem;margin-bottom:1rem;box-shadow:var(--shadow-sm);cursor:grab;display:flex;align-items:flex-start;gap:1rem;transition:box-shadow .2s ease}.dnd-item:active{cursor:grabbing}.dnd-item:hover{box-shadow:var(--shadow-md);border-color:var(--primary)}.dnd-item-icon{color:var(--primary);background:#eef2ff;padding:.5rem;border-radius:8px;display:flex;align-items:center;justify-content:center}.dnd-item-content h4{font-weight:600;margin-bottom:.25rem}.dnd-item-content p{font-size:.875rem;color:var(--text-muted);margin:0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1.5rem;border-radius:8px;font-weight:600;cursor:pointer;transition:all .2s ease;border:none;font-size:1rem}.btn-primary{background-color:var(--primary);color:#fff}.btn-primary:hover{background-color:#0a1f35;transform:translateY(-1px)}.file-upload-area{border:2px dashed var(--primary);background:#eef2ff;border-radius:var(--radius);padding:3rem 2rem;text-align:center;cursor:pointer;transition:all .2s ease}.file-upload-area:hover,.file-upload-area.active{background:#e0e7ff;border-color:var(--primary-hover)}.file-upload-icon{color:var(--primary);width:48px;height:48px;margin-bottom:1rem}.file-upload-text{font-size:1.125rem;font-weight:500;color:var(--primary)}.file-upload-subtext{font-size:.875rem;color:var(--text-muted);margin-top:.5rem}