@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap");:root{--primary-50:#eef2ff;--primary-100:#e0e7ff;--primary-200:#c7d2fe;--primary-300:#a5b4fc;--primary-400:#818cf8;--primary-500:#6366f1;--primary-600:#4f46e5;--primary-700:#4338ca;--primary-800:#3730a3;--primary-900:#312e81;--accent-50:#ecfdf5;--accent-100:#d1fae5;--accent-400:#34d399;--accent-500:#10b981;--accent-600:#059669;--accent-700:#047857;--neutral-50:#f8fafc;--neutral-100:#f1f5f9;--neutral-200:#e2e8f0;--neutral-300:#cbd5e1;--neutral-400:#94a3b8;--neutral-500:#64748b;--neutral-600:#475569;--neutral-700:#334155;--neutral-800:#1e293b;--neutral-900:#0f172a;--neutral-950:#020617;--success:#22c55e;--warning:#f59e0b;--error:#ef4444;--info:#3b82f6;--bg-body:#f0f2f8;--bg-card:#fff;--bg-sidebar:var(--neutral-900);--bg-sidebar-hover:var(--neutral-800);--bg-input:#fff;--bg-overlay:rgba(15,23,42,.6);--border-light:var(--neutral-200);--border-medium:var(--neutral-300);--border-focus:var(--primary-500);--text-primary:var(--neutral-900);--text-secondary:var(--neutral-600);--text-muted:var(--neutral-400);--text-inverse:#fff;--text-link:var(--primary-600);--shadow-xs:0 1px 2px rgba(0,0,0,.04);--shadow-sm:0 1px 3px rgba(0,0,0,.06),0 1px 2px rgba(0,0,0,.04);--shadow-md:0 4px 6px -1px rgba(0,0,0,.07),0 2px 4px -2px rgba(0,0,0,.05);--shadow-lg:0 10px 15px -3px rgba(0,0,0,.08),0 4px 6px -4px rgba(0,0,0,.04);--shadow-xl:0 20px 25px -5px rgba(0,0,0,.08),0 8px 10px -6px rgba(0,0,0,.04);--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:20px;--space-6:24px;--space-8:32px;--space-10:40px;--space-12:48px;--space-16:64px;--font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;--font-mono:"SF Mono","Fira Code",monospace;--text-xs:0.75rem;--text-sm:0.875rem;--text-base:1rem;--text-lg:1.125rem;--text-xl:1.25rem;--text-2xl:1.5rem;--text-3xl:1.875rem;--text-4xl:2.25rem;--radius-sm:6px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--radius-full:9999px;--transition-fast:150ms cubic-bezier(0.4,0,0.2,1);--transition-normal:250ms cubic-bezier(0.4,0,0.2,1);--transition-slow:350ms cubic-bezier(0.4,0,0.2,1);--sidebar-width:260px;--sidebar-collapsed:72px}*,:after,:before{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family);color:var(--text-primary);background:var(--bg-body);line-height:1.6;min-height:100vh}a{color:var(--text-link);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;display:block}.login-wrapper{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary-900) 0,var(--neutral-950) 50%,var(--primary-800) 100%);position:relative;overflow:hidden}.login-wrapper:before{width:600px;height:600px;background:radial-gradient(circle,rgba(99,102,241,.15),transparent 70%);top:-200px;right:-200px}.login-wrapper:after,.login-wrapper:before{content:"";position:absolute;border-radius:50%}.login-wrapper:after{width:400px;height:400px;background:radial-gradient(circle,rgba(16,185,129,.1),transparent 70%);bottom:-100px;left:-100px}.login-card{background:hsla(0,0%,100%,.95);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-radius:var(--radius-xl);padding:var(--space-10);width:100%;max-width:420px;box-shadow:var(--shadow-xl),0 0 60px rgba(99,102,241,.1);position:relative;z-index:1;animation:slideUp .5s ease-out}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.login-logo{text-align:center;margin-bottom:var(--space-8)}.login-logo-icon{width:64px;height:64px;background:linear-gradient(135deg,var(--primary-500),var(--primary-700));border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;margin:0 auto var(--space-4);font-size:28px;color:#fff;box-shadow:0 4px 14px rgba(99,102,241,.4)}.login-logo h1{font-size:var(--text-xl);font-weight:700;color:var(--neutral-900);letter-spacing:-.02em}.login-logo p{font-size:var(--text-sm);color:var(--text-secondary);margin-top:var(--space-1)}.form-group{margin-bottom:var(--space-5)}.form-label{display:block;font-size:var(--text-sm);font-weight:600;color:var(--neutral-700);margin-bottom:var(--space-2)}.form-input,.form-select,.form-textarea{width:100%;padding:10px 14px;font-size:var(--text-sm);font-family:var(--font-family);color:var(--text-primary);background:var(--bg-input);border:1.5px solid var(--border-light);border-radius:var(--radius-md);transition:border-color var(--transition-fast),box-shadow var(--transition-fast);outline:none}.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--primary-500);box-shadow:0 0 0 3px rgba(99,102,241,.12)}.form-input::placeholder{color:var(--text-muted)}.form-textarea{resize:vertical;min-height:80px}.form-error{color:var(--error)}.form-error,.form-hint{font-size:var(--text-xs);margin-top:var(--space-1)}.form-hint{color:var(--text-muted)}.form-row{grid-template-columns:1fr 1fr;grid-gap:var(--space-4)}.form-row,.form-row-3{display:grid;gap:var(--space-4)}.form-row-3{grid-template-columns:1fr 1fr 1fr;grid-gap:var(--space-4)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:10px 20px;font-size:var(--text-sm);font-weight:600;font-family:var(--font-family);border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);text-decoration:none;white-space:nowrap}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg,var(--primary-500),var(--primary-600));color:#fff;box-shadow:0 2px 8px rgba(99,102,241,.3)}.btn-primary:hover:not(:disabled){background:linear-gradient(135deg,var(--primary-600),var(--primary-700));box-shadow:0 4px 12px rgba(99,102,241,.4);transform:translateY(-1px)}.btn-secondary{background:var(--neutral-100);color:var(--neutral-700);border:1px solid var(--border-light)}.btn-secondary:hover:not(:disabled){background:var(--neutral-200)}.btn-success{background:linear-gradient(135deg,var(--accent-500),var(--accent-600));color:#fff;box-shadow:0 2px 8px rgba(16,185,129,.3)}.btn-success:hover:not(:disabled){background:linear-gradient(135deg,var(--accent-600),var(--accent-700));transform:translateY(-1px)}.btn-danger{background:linear-gradient(135deg,var(--error),#dc2626);color:#fff}.btn-danger:hover:not(:disabled){background:linear-gradient(135deg,#dc2626,#b91c1c);transform:translateY(-1px)}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover{background:var(--neutral-100)}.btn-sm{padding:6px 12px;font-size:var(--text-xs)}.btn-lg{padding:14px 28px;font-size:var(--text-base)}.btn-full{width:100%}.btn-icon{width:36px;height:36px;padding:0;border-radius:var(--radius-md)}.app-layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);background:var(--bg-sidebar);color:var(--text-inverse);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100;transition:width var(--transition-normal);overflow-y:auto;overflow-x:hidden}.sidebar-brand{padding:var(--space-6);border-bottom:1px solid hsla(0,0%,100%,.08);display:flex;align-items:center;gap:var(--space-3)}.sidebar-brand-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--primary-400),var(--primary-600));border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}.sidebar-brand h2{font-size:var(--text-base);font-weight:700;white-space:nowrap;letter-spacing:-.02em}.sidebar-brand small{display:block;font-size:var(--text-xs);color:var(--neutral-400);font-weight:400}.sidebar-nav{flex:1 1;padding:var(--space-4) 0}.sidebar-section{padding:var(--space-2) var(--space-4);margin-top:var(--space-2)}.sidebar-section-title{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--neutral-500);padding:0 var(--space-3);margin-bottom:var(--space-2)}.nav-item{display:flex;align-items:center;gap:var(--space-3);padding:10px var(--space-4);margin:2px var(--space-3);border-radius:var(--radius-md);color:var(--neutral-400);font-size:var(--text-sm);font-weight:500;cursor:pointer;transition:all var(--transition-fast);text-decoration:none;border:none;background:none;width:calc(100% - var(--space-6));text-align:left}.nav-item:hover{background:var(--bg-sidebar-hover);color:var(--text-inverse);text-decoration:none}.nav-item.active{background:rgba(99,102,241,.15);color:var(--primary-300)}.nav-item-icon{width:20px;height:20px;display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0}.sidebar-footer{padding:var(--space-4) var(--space-6);border-top:1px solid hsla(0,0%,100%,.08)}.sidebar-user{display:flex;align-items:center;gap:var(--space-3)}.sidebar-user-avatar{width:36px;height:36px;border-radius:var(--radius-full);background:linear-gradient(135deg,var(--primary-400),var(--accent-400));display:flex;align-items:center;justify-content:center;font-size:var(--text-sm);font-weight:700;flex-shrink:0}.sidebar-user-info{flex:1 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var(--border-light);box-shadow:var(--shadow-xs);overflow:hidden;transition:box-shadow var(--transition-fast)}.card:hover{box-shadow:var(--shadow-sm)}.card-header{padding:var(--space-5) var(--space-6);border-bottom:1px solid var(--border-light);display:flex;align-items:center;justify-content:space-between}.card-header h2,.card-header h3{font-size:var(--text-lg);font-weight:600;letter-spacing:-.01em}.card-body{padding:var(--space-6)}.card-footer{padding:var(--space-4) var(--space-6);border-top:1px solid var(--border-light);background:var(--neutral-50);display:flex;justify-content:flex-end;gap:var(--space-3)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));grid-gap:var(--space-6);gap:var(--space-6);margin-bottom:var(--space-8)}.stat-card{background:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border-light);padding:var(--space-6);display:flex;align-items:flex-start;gap:var(--space-4);transition:all 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rgba(59,130,246,.2);color:#1d4ed8}.modal-overlay{position:fixed;inset:0;background:var(--bg-overlay);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .2s ease;padding:var(--space-6)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal{background:var(--bg-card);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);width:100%;max-width:560px;max-height:90vh;overflow-y:auto;animation:modalSlideUp .3s ease}@keyframes modalSlideUp{0%{opacity:0;transform:translateY(20px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}.modal-header{padding:var(--space-6);border-bottom:1px solid var(--border-light);display:flex;justify-content:space-between;align-items:center}.modal-header h2{font-size:var(--text-lg);font-weight:600}.modal-body{padding:var(--space-6)}.modal-footer{padding:var(--space-4) var(--space-6);border-top:1px solid var(--border-light);display:flex;justify-content:flex-end;gap:var(--space-3)}.search-bar{position:relative}.search-bar input{width:100%;padding:10px 14px 10px 40px;font-size:var(--text-sm);border:1.5px solid var(--border-light);border-radius:var(--radius-md);background:var(--bg-input);outline:none;transition:all var(--transition-fast)}.search-bar input:focus{border-color:var(--primary-500);box-shadow:0 0 0 3px rgba(99,102,241,.12)}.search-bar-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:16px}.checkbox-group{display:flex;flex-wrap:wrap;gap:var(--space-2)}.checkbox-label{display:flex;align-items:center;gap:var(--space-2);font-size:var(--text-sm);cursor:pointer;padding:6px 12px;border-radius:var(--radius-sm);border:1px solid var(--border-light);transition:all var(--transition-fast);-webkit-user-select:none;-moz-user-select:none;user-select:none}.checkbox-label:hover{border-color:var(--primary-300);background:var(--primary-50)}.checkbox-label input[type=checkbox]{accent-color:var(--primary-600);width:16px;height:16px}.checkbox-label.checked{border-color:var(--primary-500);background:var(--primary-50);color:var(--primary-700)}.tabs{display:flex;border-bottom:2px solid var(--border-light);gap:0;margin-bottom:var(--space-6)}.tab{padding:var(--space-3) var(--space-5);font-size:var(--text-sm);font-weight:500;color:var(--text-secondary);background:none;cursor:pointer;border:none;border-bottom:2px solid transparent;margin-bottom:-2px;transition:all var(--transition-fast);font-family:var(--font-family)}.tab.active,.tab:hover{color:var(--primary-600)}.tab.active{border-bottom-color:var(--primary-600);font-weight:600}.empty-state{text-align:center;padding:var(--space-16) var(--space-8);color:var(--text-secondary)}.empty-state-icon{font-size:48px;margin-bottom:var(--space-4);opacity:.5}.empty-state h3{font-size:var(--text-lg);font-weight:600;color:var(--neutral-700);margin-bottom:var(--space-2)}.empty-state p{font-size:var(--text-sm);max-width:400px;margin:0 auto var(--space-6)}.spinner{width:20px;height:20px;border:2.5px solid var(--neutral-200);border-top-color:var(--primary-600);border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}.loading-page{display:flex;align-items:center;justify-content:center;min-height:400px;flex-direction:column;gap:var(--space-4);color:var(--text-secondary)}.ledger-paid{color:var(--accent-600);font-weight:600}.ledger-pending{color:var(--error);font-weight:600}.ledger-partial{color:var(--warning);font-weight:600}.receipt-print{display:none}@media print{body *{visibility:hidden!important}.receipt-print,.receipt-print *{visibility:visible!important}.receipt-print{display:block!important;position:absolute;left:0;top:0;width:80mm;font-family:Courier New,monospace;font-size:12px;color:#000;padding:4mm}@page{size:80mm auto;margin:0}}.receipt-thermal{width:80mm;font-family:Courier New,monospace;font-size:12px;color:#000;padding:4mm;background:#fff;margin:0 auto}.receipt-thermal .r-center{text-align:center}.receipt-thermal .r-bold{font-weight:700}.receipt-thermal .r-divider{border-top:1px dashed #000;margin:4px 0}.receipt-thermal .r-line{display:flex;justify-content:space-between}.receipt-thermal .r-total{font-weight:700;font-size:14px;border-top:2px solid #000;border-bottom:2px solid #000;padding:4px 0;margin:4px 0}@media (max-width:768px){.sidebar{transform:translateX(-100%)}.sidebar.open{transform:translateX(0)}.main-content{margin-left:0}.form-row,.form-row-3,.stats-grid{grid-template-columns:1fr}.page-header{padding:var(--space-4) var(--space-5)}.page-body{padding:var(--space-4)}}