:root{--font-heading: "Outfit", sans-serif;--font-body: "Inter", sans-serif;--primary: #6366f1;--primary-glow: rgba(99, 102, 241, .4);--accent: #ec4899;--bg-dark: #0f172a;--bg-panel: rgba(30, 41, 59, .7);--glass-border: rgba(255, 255, 255, .1);--text-main: #f8fafc;--text-muted: #94a3b8;--success: #10b981;--warning: #f59e0b}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-body);background-color:var(--bg-dark);background-image:radial-gradient(at 0% 0%,rgba(99,102,241,.15) 0px,transparent 50%),radial-gradient(at 100% 0%,rgba(236,72,153,.15) 0px,transparent 50%);color:var(--text-main);min-height:100vh;line-height:1.6}.app-container{max-width:1200px;margin:0 auto;padding:2rem}.app-header{text-align:center;margin-bottom:3rem}.app-header h1{font-family:var(--font-heading);font-size:2.5rem;background:linear-gradient(to right,#fff,#94a3b8);background-clip:text;-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:.5rem}.subtitle{color:var(--text-muted)}.panel{background:var(--bg-panel);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:16px;padding:1.5rem;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f}.dashboard{display:grid;grid-template-columns:1fr;gap:1.5rem;margin-bottom:1.5rem}@media(min-width:900px){.dashboard{grid-template-columns:350px 1fr}}.input-panel h2{font-family:var(--font-heading);margin-bottom:1.5rem;display:flex;align-items:center;gap:.5rem;font-size:1.25rem;color:var(--text-main)}.form-group{margin-bottom:1.25rem}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}label{display:block;font-size:.875rem;color:var(--text-muted);margin-bottom:.5rem}input,select{width:100%;padding:.75rem;background:#0f172a99;border:1px solid var(--glass-border);border-radius:8px;color:#fff;font-family:var(--font-body);transition:all .2s}input:focus,select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}.input-wrapper{display:flex;gap:.5rem}.input-wrapper input{flex:2}.input-wrapper select{flex:1}.bulk-payments-section{margin-top:2rem;border-top:1px solid var(--glass-border);padding-top:1rem}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.section-header h3{font-size:1rem;font-weight:500}.btn-small{background:#ffffff1a;border:none;color:#fff;padding:.25rem .75rem;border-radius:6px;cursor:pointer;display:flex;align-items:center;gap:.25rem;font-size:.8rem}.btn-small:hover{background:#fff3}.calculate-btn{width:100%;margin-top:1.5rem;padding:1rem;background:linear-gradient(135deg,var(--primary),#4f46e5);border:none;border-radius:8px;color:#fff;font-weight:600;cursor:pointer;transition:transform .1s}.calculate-btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px var(--primary-glow)}.calculate-btn:active{transform:translateY(1px)}.results-container{display:flex;flex-direction:column;gap:1.5rem}.summary-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1rem}.summary-card{padding:1.25rem;display:flex;flex-direction:column}.card-label{font-size:.8rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.card-value{font-family:var(--font-heading);font-size:1.5rem;margin:.5rem 0;background:linear-gradient(to right,#fff,var(--text-muted));background-clip:text;-webkit-background-clip:text;-webkit-text-fill-color:transparent}.card-sub{font-size:.75rem;color:var(--text-muted)}.chart-panel{flex:1;display:flex;flex-direction:column}.chart-wrapper{flex:1;position:relative;min-height:300px}.table-panel{overflow:hidden}.table-header-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.table-responsive{overflow-x:auto;max-height:500px}table{width:100%;border-collapse:collapse;font-size:.9rem}th{text-align:left;padding:1rem;background:#0f172acc;position:sticky;top:0;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);color:var(--text-muted);font-weight:500;white-space:nowrap}td{padding:1rem;border-bottom:1px solid var(--glass-border);color:var(--text-main)}tbody tr:hover{background:#ffffff08}.text-right{text-align:right}@keyframes slideIn{0%{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:translateY(0)}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:#0003}::-webkit-scrollbar-thumb{background:#fff3;border-radius:4px}.export-actions{display:flex;gap:.5rem}.btn-secondary{background:#ffffff1a;border:1px solid var(--glass-border);color:var(--text-main);padding:.5rem 1rem;border-radius:8px;cursor:pointer;font-size:.9rem;display:flex;align-items:center;gap:.5rem;transition:all .2s}.btn-secondary:hover{background:#fff3;transform:translateY(-1px)}.btn-secondary i{font-size:1.1rem}