*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{--purple:#7B61FF;--purple-dark:#6B4FEF;--purple-light:rgba(123,97,255,0.10);--green:#22C55E;--amber:#F59E0B;--red:#EF4444;--blue:#3B82F6;--radius:12px;--radius-sm:8px;--shadow:0 1px 3px rgba(0,0,0,0.06),0 1px 2px rgba(0,0,0,0.04)}
:root[data-theme="light"]{--bg:#F5F6F8;--card:#fff;--card-hover:#FAFBFC;--text:#1A1D1F;--text2:#6F767E;--text3:#9A9FA5;--border:#E8E9EB;--border2:#F0F0F1;--urgent-bg:#FEF2F2;--urgent-border:#FCA5A5;--overdue-bg:#FFF7ED;--overdue-border:#FDBA74}
:root[data-theme="dark"]{--bg:#0A0A0F;--card:#141419;--card-hover:#1A1A20;--text:#F0F0F5;--text2:#A0A0B0;--text3:#6B6B7B;--border:#2A2A35;--border2:#1E1E28;--urgent-bg:rgba(127,29,29,0.25);--urgent-border:#7F1D1D;--overdue-bg:rgba(154,52,18,0.2);--overdue-border:#9A3412}
html,body{height:100%;font-family:Inter,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,select,textarea{font-family:inherit;font-size:13px}
.app{display:flex;height:100vh;overflow:hidden}
.sidebar-backdrop{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.35);z-index:80}
.sidebar-backdrop.active{display:block}
.sidebar{position:fixed;left:0;top:0;bottom:0;width:240px;background:var(--card);border-right:1px solid var(--border);z-index:90;display:flex;flex-direction:column;transform:translateX(-100%);transition:transform 0.25s ease}
.sidebar.open{transform:translateX(0)}
@media(min-width:1024px){.sidebar{position:relative;transform:translateX(0);width:220px;flex-shrink:0}.sidebar-backdrop{display:none!important}}
.sidebar-logo{display:flex;align-items:center;gap:10px;padding:0 16px;height:56px;border-bottom:1px solid var(--border)}
.sidebar-logo-icon{width:32px;height:32px;border-radius:8px;background:var(--purple);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:14px;flex-shrink:0}
.sidebar-logo-text{font-size:15px;font-weight:600}
.sidebar-nav{flex:1;overflow-y:auto;padding:8px}
.sidebar-link{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:var(--radius-sm);font-size:13px;font-weight:500;color:var(--text2);transition:all 0.15s;width:100%}
.sidebar-link:hover{background:var(--card-hover);color:var(--text)}
.sidebar-link.active{background:var(--purple-light);color:var(--purple);font-weight:600}
.sidebar-link svg{width:18px;height:18px;flex-shrink:0}
.sidebar-bottom{padding:8px;border-top:1px solid var(--border)}
.sidebar-user{display:flex;align-items:center;gap:8px;padding:8px}
.main{flex:1;display:flex;flex-direction:column;overflow:hidden;min-width:0}
.header{height:56px;background:var(--card);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 16px;flex-shrink:0}
.header-left{display:flex;align-items:center;gap:12px}
.menu-btn{padding:8px;border-radius:var(--radius-sm);color:var(--text2);display:flex}
.menu-btn:hover{background:var(--card-hover)}
.breadcrumb{font-size:13px}
.breadcrumb span:first-child{color:var(--text3)}
.breadcrumb span:last-child{color:var(--text);font-weight:500}
.header-right{display:flex;align-items:center;gap:4px}
.icon-btn{padding:8px;border-radius:var(--radius-sm);color:var(--text2);position:relative;display:flex}
.icon-btn:hover{background:var(--card-hover)}
.badge{position:absolute;top:4px;right:4px;min-width:16px;height:16px;border-radius:8px;background:var(--red);color:#fff;font-size:9px;font-weight:700;display:flex;align-items:center;justify-content:center;padding:0 4px}
.page{flex:1;overflow-y:auto;padding:16px}
@media(min-width:1024px){.page{padding:24px 28px}}
.page-title{font-size:18px;font-weight:600;margin-bottom:2px}
@media(min-width:1024px){.page-title{font-size:20px}}
.page-subtitle{font-size:12px;color:var(--text2);margin-bottom:16px}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:16px}
.kpi-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:12px 4px;text-align:center;box-shadow:var(--shadow)}
.kpi-icon{width:16px;height:16px;margin:0 auto 4px}
.kpi-value{font-size:16px;font-weight:700}
.kpi-label{font-size:9px;color:var(--text2);margin-top:2px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 14px;border-radius:var(--radius-sm);font-size:12px;font-weight:600;white-space:nowrap}
.btn-purple{background:var(--purple);color:#fff}
.btn-purple:hover{background:var(--purple-dark)}
.btn-outline{background:var(--card);border:1px solid var(--border);color:var(--text)}
.btn-sm{padding:6px 10px;font-size:11px}
.action-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-bottom:16px}
@media(min-width:1024px){.action-grid{grid-template-columns:repeat(4,1fr)}}
.list-item{width:100%;display:flex;align-items:flex-start;gap:10px;padding:12px 14px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);text-align:left;transition:all 0.15s;cursor:pointer}
.list-item:hover{border-color:rgba(123,97,255,0.25)}
.list-item-body{flex:1;min-width:0}
.list-item-title{font-size:13px;font-weight:500;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.list-item-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:4px;font-size:10px;color:var(--text2)}
.list-item-arrow{width:14px;height:14px;color:var(--text3);flex-shrink:0;align-self:center}
.urgent-card{background:var(--urgent-bg)!important;border-color:var(--urgent-border)!important}
.overdue-card{background:var(--overdue-bg)!important;border-color:var(--overdue-border)!important}
.tag-urgent{display:inline-block;font-size:9px;font-weight:700;padding:2px 6px;border-radius:4px;background:rgba(239,68,68,0.12);color:var(--red);border:1px solid rgba(239,68,68,0.2);flex-shrink:0}
.tag-overdue{display:inline-block;font-size:9px;font-weight:700;padding:2px 6px;border-radius:4px;background:rgba(245,158,11,0.12);color:var(--amber);border:1px solid rgba(245,158,11,0.2);flex-shrink:0}
.tag-status{display:inline-block;font-size:10px;padding:3px 10px;border-radius:20px;background:var(--border2);color:var(--text2)}
.filters{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.pill{padding:6px 14px;border-radius:20px;font-size:12px;font-weight:500;background:var(--card);border:1px solid var(--border);color:var(--text2)}
.pill.active{background:var(--purple);color:#fff;border-color:var(--purple)}
.avatar{width:28px;height:28px;border-radius:50%;background:var(--purple-light);color:var(--purple);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;flex-shrink:0}
.avatar-lg{width:40px;height:40px;font-size:15px}
.cal-grid{display:grid;grid-template-columns:repeat(7,1fr)}
.cal-cell{min-height:44px;padding:4px;border-top:1px solid var(--border2);border-right:1px solid var(--border2);text-align:left;cursor:pointer;background:var(--card)}
.cal-cell:hover{background:var(--card-hover)}
.cal-cell.today{background:rgba(123,97,255,0.04)}
.cal-cell-num{font-size:11px;font-weight:500;width:22px;height:22px;display:flex;align-items:center;justify-content:center;border-radius:50%}
.cal-cell-num.active{background:var(--purple);color:#fff}
.cal-dots{display:flex;flex-wrap:wrap;gap:2px;margin-top:3px}
.cal-dot{width:5px;height:5px;border-radius:50%}
.cal-header{text-align:center;padding:6px 2px;font-size:10px;font-weight:600;color:var(--text3);text-transform:uppercase;background:var(--card)}
.cal-week-day{padding:8px;border-radius:var(--radius-sm);text-align:center;border:1px solid var(--border);background:var(--card);cursor:pointer}
.cal-week-day:hover,.cal-week-day.selected{border-color:var(--purple);background:var(--purple-light)}
.legend{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:12px;font-size:11px;color:var(--text2)}
.legend-item{display:flex;align-items:center;gap:5px}
.legend-dot{width:7px;height:7px;border-radius:50%}
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.3);z-index:100}
.modal{position:fixed;left:0;right:0;bottom:0;background:var(--card);z-index:101;border-radius:16px 16px 0 0;max-height:88vh;overflow-y:auto;animation:slideUp 0.25s ease}
@media(min-width:1024px){.modal{left:auto;right:0;top:0;bottom:0;width:440px;max-height:100vh;border-radius:0;animation:slideRight 0.2s ease}}
@keyframes slideUp{from{transform:translateY(100%)}to{transform:translateY(0)}}
@keyframes slideRight{from{transform:translateX(100%)}to{transform:translateX(0)}}
.modal-header{position:sticky;top:0;background:var(--card);border-bottom:1px solid var(--border);padding:10px 16px;display:flex;align-items:center;justify-content:space-between;z-index:2}
.modal-body{padding:16px}
.field{margin-bottom:14px}
.field-label{display:block;font-size:11px;font-weight:500;color:var(--text3);margin-bottom:5px}
.field-input{width:100%;padding:8px 12px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--card);color:var(--text);outline:none}
.field-input:focus{border-color:var(--purple);box-shadow:0 0 0 3px var(--purple-light)}
textarea.field-input{resize:vertical;min-height:60px}
select.field-input{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239A9FA5' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;padding-right:30px}
.chart-container{position:relative;height:140px}
.reminder-tag{display:inline-flex;align-items:center;gap:4px;font-size:10px;padding:3px 8px;border-radius:12px;background:rgba(59,130,246,0.1);color:var(--blue);border:1px solid rgba(59,130,246,0.15)}
.segment-badge{display:inline-flex;align-items:center;gap:4px;font-size:11px;padding:3px 10px;border-radius:12px;font-weight:500}
.toggle{position:relative;width:40px;height:22px;display:inline-block}
.toggle input{opacity:0;width:0;height:0}
.toggle-slider{position:absolute;cursor:pointer;inset:0;background:var(--border);border-radius:22px;transition:0.2s}
.toggle-slider::before{content:"";position:absolute;height:16px;width:16px;left:3px;bottom:3px;background:white;border-radius:50%;transition:0.2s}
.toggle input:checked+.toggle-slider{background:var(--purple)}
.toggle input:checked+.toggle-slider::before{transform:translateX(18px)}
.empty-state{text-align:center;padding:48px 16px;color:var(--text3);font-size:13px}
.grid-2{display:grid;grid-template-columns:1fr;gap:12px}
@media(min-width:1024px){.grid-2{grid-template-columns:1fr 1fr}}
.row-between{display:flex;align-items:center;justify-content:space-between}
.space-y>*+*{margin-top:8px}
.mt-3{margin-top:12px}
.mb-3{margin-bottom:12px}
.mb-4{margin-bottom:16px}
.text-sm{font-size:12px}
.font-semibold{font-weight:600}
.truncate{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ===== Added logic-friendly utility classes; visual theme kept aligned with existing layout ===== */
.grid-2{display:grid;grid-template-columns:1fr;gap:12px}.grid-3{display:grid;grid-template-columns:1fr;gap:12px}.grid-4{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}@media(min-width:900px){.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}}
.mb-2{margin-bottom:8px}.mb-3{margin-bottom:12px}.mb-4{margin-bottom:16px}.mt-2{margin-top:8px}.mt-3{margin-top:12px}.mt-4{margin-top:16px}.space-y>*+*{margin-top:10px}
.flex{display:flex}.flex-between{display:flex;align-items:center;justify-content:space-between;gap:10px}.flex-wrap{display:flex;flex-wrap:wrap;gap:8px}.muted{color:var(--text2)}.tiny{font-size:10px;color:var(--text3)}.text-right{text-align:right}.nowrap{white-space:nowrap}.hidden{display:none!important}
.table-wrap{overflow:auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.data-table{width:100%;border-collapse:collapse;min-width:760px}.data-table th,.data-table td{padding:11px 12px;border-bottom:1px solid var(--border2);font-size:12px;text-align:left;vertical-align:middle}.data-table th{font-size:10px;text-transform:uppercase;letter-spacing:.04em;color:var(--text3);font-weight:700;background:var(--card-hover)}.data-table tr:last-child td{border-bottom:none}.data-table tr:hover td{background:var(--card-hover)}
.field{margin-bottom:10px}.field-label{display:block;font-size:11px;color:var(--text2);font-weight:600;margin-bottom:5px}.field-input{width:100%;height:38px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:0 10px;color:var(--text);outline:none}.field-input:focus{border-color:var(--purple)}textarea.field-input{height:84px;padding:10px;resize:vertical}.field-grid{display:grid;grid-template-columns:1fr;gap:10px}@media(min-width:700px){.field-grid{grid-template-columns:repeat(2,1fr)}}
.filters{display:flex;gap:8px;overflow:auto;padding-bottom:8px;margin-bottom:12px}.pill{border:1px solid var(--border);border-radius:999px;padding:7px 11px;font-size:11px;font-weight:600;color:var(--text2);background:var(--card);white-space:nowrap}.pill.active,.pill:hover{background:var(--purple-light);color:var(--purple);border-color:rgba(123,97,255,.25)}
.tag-status{font-size:10px;font-weight:700;padding:3px 7px;border-radius:999px;background:var(--border2);color:var(--text2);display:inline-flex}.tag-paid{background:rgba(34,197,94,.12);color:var(--green)}.tag-pending{background:rgba(59,130,246,.12);color:var(--blue)}.tag-overdue{background:rgba(239,68,68,.12);color:var(--red)}.tag-partial{background:rgba(245,158,11,.12);color:var(--amber)}.tag-draft{background:rgba(107,114,128,.12);color:var(--text2)}.tag-cancelled{background:rgba(239,68,68,.08);color:var(--text3)}
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.38);z-index:100}.modal{position:fixed;z-index:101;top:50%;left:50%;transform:translate(-50%,-50%);width:min(720px,calc(100vw - 24px));max-height:88vh;overflow:auto;background:var(--card);border:1px solid var(--border);border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,.22)}.modal-header{position:sticky;top:0;background:var(--card);z-index:1;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:14px 16px;border-bottom:1px solid var(--border)}.modal-body{padding:16px}.modal-footer{display:flex;gap:8px;justify-content:flex-end;padding:12px 16px;border-top:1px solid var(--border);position:sticky;bottom:0;background:var(--card)}
.empty-state{padding:24px;text-align:center;color:var(--text3);font-size:13px;background:var(--card);border:1px dashed var(--border);border-radius:var(--radius)}.avatar{width:32px;height:32px;border-radius:50%;background:var(--purple-light);color:var(--purple);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;flex-shrink:0}.danger{color:var(--red)}.success{color:var(--green)}.warning{color:var(--amber)}