:root{--brand: #6d001b;--brand-dark: #520013;--bg: #f6f7fb;--card: #ffffff;--border: #e5e7eb;--text: #1f2937}*{box-sizing:border-box;font-family:Inter,Segoe UI,Arial}body{margin:0;background:var(--bg);color:var(--text)}.login-box{width:360px;background:#fff;padding:35px;margin:120px auto;border-radius:14px;box-shadow:0 20px 40px #00000026;text-align:center}.login-box h2{color:var(--brand);margin-bottom:20px}.login-box input,.login-box select{width:100%;padding:12px 14px;margin:10px 0;border-radius:10px;border:1px solid var(--border);font-size:14px}.login-box button{width:100%;padding:12px;border:none;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;font-weight:600;cursor:pointer}.sidebar{width:240px;background:linear-gradient(180deg,var(--brand),var(--brand-dark));color:#fff;height:100vh;padding:25px 20px;position:fixed;box-shadow:4px 0 20px #00000040}.sidebar h3{text-align:center;margin-bottom:35px;letter-spacing:1px}.sidebar button{width:100%;padding:14px;border:none;border-radius:12px;margin-bottom:14px;background:#ffffff1f;color:#fff;font-size:14px;font-weight:500;cursor:pointer;transition:.2s}.sidebar button:hover{background:#fff;color:var(--brand)}.main{margin-left:260px;padding:35px}.section{background:var(--card);border-radius:16px;padding:25px;box-shadow:0 15px 35px #0000000f;animation:fade .3s ease}@keyframes fade{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}.section h2{margin-top:0;color:var(--brand)}input,select{padding:12px 14px;border-radius:10px;border:1px solid var(--border);outline:none;width:100%;font-size:14px}input:focus,select:focus{border-color:var(--brand);box-shadow:0 0 0 2px #6d001b26}#stockForm,#challan input,#delivery input,#delivery select{margin-top:12px}button{padding:12px 18px;border:none;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;font-weight:600;cursor:pointer;transition:.2s}button:hover{opacity:.9}table{width:100%;border-collapse:collapse;margin-top:15px}th{background:var(--bg);text-align:left;padding:12px;font-size:13px;color:#6b7280}td{padding:12px;border-bottom:1px solid var(--border);font-size:14px}tr:hover{background:#fafafa}#reports p{background:var(--bg);padding:18px;border-radius:12px;font-size:18px;margin:15px 0}#audit ul{list-style:none;padding:0}#audit li{padding:12px;border-bottom:1px solid var(--border);font-size:14px;color:#444}.hidden{display:none}.section h2{font-size:22px;font-weight:700;color:#6d001b;margin-bottom:18px}th{background:#f1f2f6;color:#4b5563;font-weight:600}input,select{background:#fafafa;border:1.5px solid #d1d5db;color:#1f2937;font-weight:500}::placeholder{color:#6b7280;opacity:1}input:focus,select:focus{border-color:#6d001b;background:#fff;box-shadow:0 0 0 3px #6d001b26}#stockForm input{margin-bottom:10px}#stockForm button{background:#6d001b;margin-top:8px}td{color:#1f2937;font-weight:500}.section{padding:30px}.sidebar button{font-weight:600;letter-spacing:.3px}.modal-backdrop{position:fixed;inset:0;background:#00000073;display:flex;align-items:center;justify-content:center;z-index:999}.modal{background:#fff;width:420px;padding:25px;border-radius:16px;box-shadow:0 25px 60px #00000040;animation:fade .2s ease}.modal h3{margin-top:0;color:var(--brand)}.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:15px}.modal-actions button.secondary{background:#e5e7eb;color:#111}