:root{--primary-color: #6366f1;--primary-hover: #4f46e5;--primary-light: #818cf8;--primary-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);--primary-gradient-hover: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);--accent-cyan: #06b6d4;--accent-pink: #ec4899;--accent-orange: #f97316;--secondary-color: #64748b;--success-color: #22c55e;--success-light: #dcfce7;--warning-color: #eab308;--warning-light: #fef9c3;--danger-color: #ef4444;--danger-light: #fee2e2;--info-color: #0ea5e9;--info-light: #e0f2fe;--bg-primary: #ffffff;--bg-secondary: #f8fafc;--bg-tertiary: #f1f5f9;--bg-dark: #0f172a;--bg-glass: rgba(255, 255, 255, .8);--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #94a3b8;--text-light: #cbd5e1;--border-color: #e2e8f0;--border-light: #f1f5f9;--shadow-xs: 0 1px 2px 0 rgb(0 0 0 / .03);--shadow-sm: 0 1px 3px 0 rgb(0 0 0 / .06), 0 1px 2px -1px rgb(0 0 0 / .06);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .07), 0 2px 4px -2px rgb(0 0 0 / .05);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .08), 0 4px 6px -4px rgb(0 0 0 / .04);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .08), 0 8px 10px -6px rgb(0 0 0 / .04);--shadow-glow: 0 0 20px rgba(99, 102, 241, .15);--shadow-card: 0 1px 3px rgba(0,0,0,.04), 0 4px 12px rgba(0,0,0,.04);--radius-xs: .25rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.25rem;--radius-full: 9999px;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .2s cubic-bezier(.4, 0, .2, 1);--transition-slow: .3s cubic-bezier(.4, 0, .2, 1);--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--safe-area-top: env(safe-area-inset-top);--safe-area-bottom: env(safe-area-inset-bottom);--safe-area-left: env(safe-area-inset-left);--safe-area-right: env(safe-area-inset-right);--sidebar-width: 260px;--mobile-header-height: 56px;--mobile-bottom-nav-height: 64px}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;font-family:var(--font-family);font-size:14px;line-height:1.5;color:var(--text-primary);background-color:var(--bg-secondary)}a{color:var(--primary-color);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--primary-hover);text-decoration:none}button{font-family:inherit;cursor:pointer;border:none;background:none}input,select,textarea{font-family:inherit;font-size:inherit}.container{width:100%;max-width:1400px;margin:0 auto;padding:0 1.5rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1.25rem;font-size:.875rem;font-weight:600;border-radius:var(--radius-lg);border:none;cursor:pointer;transition:all var(--transition-base);text-decoration:none}.btn:link,.btn:visited,.btn:hover,.btn:active{text-decoration:none}.btn .material-icons{font-size:1.125rem}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.btn-primary{background:var(--primary-gradient);color:#fff;box-shadow:0 2px 8px #6366f140}.btn-primary:hover:not(:disabled){background:var(--primary-gradient-hover);color:#fff;box-shadow:0 4px 16px #6366f159;transform:translateY(-1px)}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-secondary{background-color:#fff;color:var(--text-primary);border:1px solid var(--border-color);box-shadow:var(--shadow-xs)}.btn-secondary:hover:not(:disabled){background-color:var(--bg-tertiary);color:var(--text-primary);border-color:var(--text-muted)}.btn-danger{background:linear-gradient(135deg,#ef4444,#dc2626);color:#fff;box-shadow:0 2px 8px #ef444440}.btn-danger:hover:not(:disabled){background:linear-gradient(135deg,#dc2626,#b91c1c);color:#fff;box-shadow:0 4px 16px #ef444459;transform:translateY(-1px)}.btn-success{background:linear-gradient(135deg,#22c55e,#16a34a);color:#fff;box-shadow:0 2px 8px #22c55e40}.btn-success:hover:not(:disabled){background:linear-gradient(135deg,#16a34a,#15803d);color:#fff;box-shadow:0 4px 16px #22c55e59;transform:translateY(-1px)}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover:not(:disabled){background:var(--bg-tertiary);color:var(--text-primary)}.btn-sm{padding:.5rem .875rem;font-size:.8125rem;border-radius:var(--radius-md)}.btn-sm .material-icons{font-size:1rem}.btn-lg{padding:1rem 2rem;font-size:1rem;border-radius:var(--radius-xl)}.btn-icon{padding:.5rem;border-radius:var(--radius-md)}.btn-icon .material-icons{font-size:1.25rem}.card{background:var(--bg-primary);border:1px solid var(--border-light);border-radius:var(--radius-xl);box-shadow:var(--shadow-card);overflow:hidden;transition:box-shadow var(--transition-base),transform var(--transition-base)}.card:hover{box-shadow:var(--shadow-md)}.card-header{padding:1.25rem 1.5rem;border-bottom:1px solid var(--border-light);background:linear-gradient(180deg,var(--bg-primary) 0%,var(--bg-secondary) 100%)}.card-header h2,.card-header h3{font-size:1rem;font-weight:600;color:var(--text-primary);letter-spacing:-.01em}.card-body{padding:1.5rem}.form-group{margin-bottom:1.25rem}.form-label{display:block;margin-bottom:.5rem;font-size:.8125rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.025em}.form-control{width:100%;padding:.75rem 1rem;font-size:.9375rem;border:2px solid var(--border-color);border-radius:var(--radius-lg);background-color:var(--bg-primary);transition:all var(--transition-base)}.form-control:hover{border-color:var(--text-muted)}.form-control:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 4px #6366f11a;background-color:#fff}.form-control::placeholder{color:var(--text-muted)}.form-control.is-invalid{border-color:var(--danger-color)}.form-control.is-invalid:focus{box-shadow:0 0 0 4px #ef44441a}select.form-control{cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");background-position:right .75rem center;background-repeat:no-repeat;background-size:1.25em 1.25em;padding-right:2.5rem}textarea.form-control{resize:vertical;min-height:120px}.form-error{margin-top:.5rem;font-size:.8125rem;color:var(--danger-color);display:flex;align-items:center;gap:.25rem}.table{width:100%;border-collapse:separate;border-spacing:0}.table th,.table td{padding:1rem 1.25rem;text-align:left}.table th{font-size:.75rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;background-color:var(--bg-tertiary);border-bottom:1px solid var(--border-color)}.table td{border-bottom:1px solid var(--border-light);color:var(--text-primary)}.table tbody tr{transition:background-color var(--transition-fast)}.table tbody tr:hover{background-color:var(--bg-secondary)}.table tbody tr:last-child td{border-bottom:none}.badge{display:inline-flex;align-items:center;padding:.375rem .75rem;font-size:.75rem;font-weight:600;border-radius:var(--radius-full);letter-spacing:.01em}.badge-success{background:linear-gradient(135deg,#dcfce7,#bbf7d0);color:#166534}.badge-warning{background:linear-gradient(135deg,#fef9c3,#fef08a);color:#854d0e}.badge-danger{background:linear-gradient(135deg,#fee2e2,#fecaca);color:#991b1b}.badge-info{background:linear-gradient(135deg,#e0f2fe,#bae6fd);color:#0c4a6e}.badge-secondary{background-color:var(--bg-tertiary);color:var(--text-secondary)}.status-draft{background:linear-gradient(135deg,#f3f4f6,#e5e7eb);color:var(--text-secondary)}.status-sent{background:linear-gradient(135deg,#dbeafe,#bfdbfe);color:#1e40af}.status-viewed{background:linear-gradient(135deg,#e0e7ff,#c7d2fe);color:#3730a3}.status-paid{background:linear-gradient(135deg,#dcfce7,#bbf7d0);color:#166534}.status-partial{background:linear-gradient(135deg,#fef9c3,#fef08a);color:#854d0e}.status-overdue{background:linear-gradient(135deg,#fee2e2,#fecaca);color:#991b1b}.status-cancelled{background:linear-gradient(135deg,#f3f4f6,#e5e7eb);color:#6b7280}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.page-header h1{font-size:1.875rem;font-weight:700;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.page-actions{display:flex;gap:.75rem}.loading-spinner{display:flex;justify-content:center;align-items:center;padding:4rem}.loading-spinner:after{content:"";width:2.5rem;height:2.5rem;border:3px solid var(--border-light);border-top-color:var(--primary-color);border-radius:50%;animation:spin .7s cubic-bezier(.6,0,.4,1) infinite}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:4rem 2rem;text-align:center;color:var(--text-secondary);animation:fadeIn .4s ease}.empty-state .material-icons{font-size:4rem;margin-bottom:1.5rem;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;opacity:.6}.empty-state h3{font-size:1.25rem;font-weight:700;color:var(--text-primary);margin-bottom:.5rem}.empty-state p{margin-bottom:1.5rem;max-width:400px;line-height:1.6}.modal-backdrop{position:fixed;inset:0;width:100vw;height:100vh;background-color:#0f172a99;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;justify-content:center;align-items:center;z-index:9999;animation:fadeIn .2s ease}.modal{background:#fff;border-radius:var(--radius-xl);box-shadow:0 25px 50px -12px #00000040;max-width:520px;width:90%;max-height:90vh;overflow-y:auto;animation:slideUp .3s ease}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem;border-bottom:1px solid var(--border-light)}.modal-header h2{font-size:1.25rem;font-weight:700;color:var(--text-primary)}.modal-header button{background:none;border:none;padding:.5rem;color:var(--text-muted);border-radius:var(--radius-md);transition:all var(--transition-fast)}.modal-header button:hover{color:var(--text-primary);background-color:var(--bg-secondary)}.modal-body{padding:1.5rem}.modal-footer{display:flex;justify-content:flex-end;gap:.75rem;padding:1.25rem 1.5rem;border-top:1px solid var(--border-light);background-color:var(--bg-tertiary);border-radius:0 0 var(--radius-xl) var(--radius-xl)}.alert{padding:1rem 1.25rem;border-radius:var(--radius-lg);margin-bottom:1rem;display:flex;align-items:center;gap:.75rem;animation:slideUp .3s ease}.alert .material-icons{font-size:1.25rem}.alert-success{background:linear-gradient(135deg,#dcfce7,#bbf7d0);color:#166534;border:1px solid #86efac}.alert-error{background:linear-gradient(135deg,#fee2e2,#fecaca);color:#991b1b;border:1px solid #fca5a5}.alert-warning{background:linear-gradient(135deg,#fef9c3,#fef08a);color:#854d0e;border:1px solid #fde047}.alert-info{background:linear-gradient(135deg,#e0f2fe,#bae6fd);color:#0c4a6e;border:1px solid #7dd3fc}.d-flex{display:flex}.flex-column{flex-direction:column}.align-items-center{align-items:center}.justify-content-between{justify-content:space-between}.justify-content-end{justify-content:flex-end}.flex-wrap{flex-wrap:wrap}.gap-1{gap:.25rem}.gap-2{gap:.5rem}.gap-3{gap:.75rem}.gap-4{gap:1rem}.gap-5{gap:1.25rem}.mt-1{margin-top:.25rem}.mt-2{margin-top:.5rem}.mt-3{margin-top:.75rem}.mt-4{margin-top:1rem}.mt-5{margin-top:1.25rem}.mb-1{margin-bottom:.25rem}.mb-2{margin-bottom:.5rem}.mb-3{margin-bottom:.75rem}.mb-4{margin-bottom:1rem}.mb-5{margin-bottom:1.25rem}.mx-auto{margin-left:auto;margin-right:auto}.p-0{padding:0}.p-1{padding:.25rem}.p-2{padding:.5rem}.p-3{padding:.75rem}.p-4{padding:1rem}.text-muted{color:var(--text-muted)}.text-secondary{color:var(--text-secondary)}.text-success{color:var(--success-color)}.text-danger{color:var(--danger-color)}.text-right{text-align:right}.text-center{text-align:center}.text-left{text-align:left}.font-medium{font-weight:500}.font-semibold{font-weight:600}.font-bold{font-weight:700}.text-sm{font-size:.875rem}.text-xs{font-size:.75rem}.text-lg{font-size:1.125rem}.w-full{width:100%}.w-auto{width:auto}.hidden{display:none}.visible{visibility:visible}.invisible{visibility:hidden}.divider{height:1px;background:linear-gradient(90deg,transparent,var(--border-color),transparent);margin:1.5rem 0}.tooltip{position:relative}.tooltip:after{content:attr(data-tooltip);position:absolute;bottom:100%;left:50%;transform:translate(-50%) translateY(-.5rem);padding:.5rem .75rem;background:var(--text-primary);color:#fff;font-size:.75rem;border-radius:var(--radius-md);white-space:nowrap;opacity:0;visibility:hidden;transition:all var(--transition-fast);pointer-events:none}.tooltip:hover:after{opacity:1;visibility:visible}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary);border-radius:4px}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}:focus-visible{outline:2px solid var(--primary-color);outline-offset:2px}::selection{background:#6366f133;color:var(--text-primary)}@media (max-width: 767px){.hide-mobile{display:none!important}}@media (min-width: 768px){.hide-desktop{display:none!important}}.show-mobile{display:none!important}@media (max-width: 767px){.show-mobile{display:block!important}}.show-desktop{display:none!important}@media (min-width: 768px){.show-desktop{display:block!important}}.container{width:100%;padding:0 1rem;margin:0 auto}@media (min-width: 576px){.container{max-width:540px}}@media (min-width: 768px){.container{max-width:720px;padding:0 1.5rem}}@media (min-width: 992px){.container{max-width:960px}}@media (min-width: 1200px){.container{max-width:1140px}}@media (min-width: 1400px){.container{max-width:1320px}}.responsive-grid{display:grid;grid-template-columns:1fr;gap:1rem}@media (min-width: 576px){.responsive-grid{grid-template-columns:repeat(2,1fr)}}@media (min-width: 992px){.responsive-grid{grid-template-columns:repeat(3,1fr);gap:1.5rem}}@media (min-width: 1200px){.responsive-grid{grid-template-columns:repeat(4,1fr)}}@media (max-width: 767px){.card{border-radius:var(--radius-lg);margin:0 -.5rem}.card .card-header,.card .card-body{padding:1rem}}.table-responsive{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}.table-responsive .table{min-width:600px}.mobile-card-list{display:none}@media (max-width: 767px){.mobile-card-list{display:block}}.mobile-card-list .mobile-card-item{background:#fff;border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:1rem;margin-bottom:.75rem}.mobile-card-list .mobile-card-item .mobile-card-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:.75rem}.mobile-card-list .mobile-card-item .mobile-card-title{font-weight:600;color:var(--text-primary)}.mobile-card-list .mobile-card-item .mobile-card-subtitle{font-size:.875rem;color:var(--text-muted)}.mobile-card-list .mobile-card-item .mobile-card-row{display:flex;justify-content:space-between;padding:.5rem 0;border-top:1px solid var(--border-light);font-size:.875rem}.mobile-card-list .mobile-card-item .mobile-card-row .label{color:var(--text-muted)}.mobile-card-list .mobile-card-item .mobile-card-row .value{font-weight:500;color:var(--text-primary)}.mobile-card-list .mobile-card-item .mobile-card-actions{display:flex;gap:.5rem;margin-top:.75rem;padding-top:.75rem;border-top:1px solid var(--border-light)}@media (max-width: 767px){.desktop-table{display:none}}@media (max-width: 767px){.btn{padding:.875rem 1rem;font-size:.9375rem}}@media (max-width: 767px){.btn-block-mobile{width:100%}}@media (max-width: 767px){.page-header{flex-direction:column;align-items:flex-start;gap:1rem;margin-bottom:1.5rem}.page-header h1{font-size:1.5rem}.page-header .page-actions{width:100%}.page-header .page-actions .btn{flex:1}}@media (max-width: 767px){.touch-target{min-height:44px;min-width:44px}}.safe-area-bottom{padding-bottom:calc(var(--spacing-md) + var(--safe-area-bottom))}.safe-area-top{padding-top:calc(var(--spacing-md) + var(--safe-area-top))}@media (max-width: 767px){.mat-mdc-dialog-container{max-width:100vw!important;max-height:100vh!important;border-radius:0!important}}@media (max-width: 767px){.mat-mdc-snack-bar-container{margin-bottom:calc(var(--mobile-bottom-nav-height) + 8px)!important}}.fab-button{position:fixed;bottom:calc(var(--mobile-bottom-nav-height) + 16px);right:16px;z-index:90}@media (min-width: 768px){.fab-button{display:none}}.pull-to-refresh{text-align:center;padding:1rem;color:var(--text-muted);font-size:.875rem}.swipe-container{overflow:hidden;position:relative}.bottom-sheet{position:fixed;bottom:0;left:0;right:0;background:#fff;border-radius:var(--radius-2xl) var(--radius-2xl) 0 0;box-shadow:0 -4px 20px #00000026;z-index:1000;padding:1rem;padding-bottom:calc(1rem + var(--safe-area-bottom))}.bottom-sheet .bottom-sheet-handle{width:40px;height:4px;background:var(--border-color);border-radius:2px;margin:0 auto 1rem}.overlay{position:fixed;inset:0;background:#00000080;z-index:999;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}@media (max-width: 767px){html{font-size:15px}h1{font-size:1.5rem}h2{font-size:1.25rem}h3{font-size:1.125rem}}.no-select{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}.scroll-container{-webkit-overflow-scrolling:touch;scroll-behavior:smooth}