@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600;700&family=Noto+Sans+Thai:wght@400;500;600;700&family=JetBrains+Mono:wght@500;600&display=swap');

:root{
  --bg:#F7F8FC;--surface:#fff;--text:#111318;--text-soft:#5C6070;--text-faint:#9AA0AE;
  --border:#E8E9F0;--border-soft:#EFF0F5;
  --primary:#4F5AFA;--primary-dark:#3A44D6;--primary-soft:#EEF0FF;
  --warn:#F5A524;--warn-soft:#FFF6E8;--success:#17B26A;--success-soft:#E7F9EF;
  --danger:#F04452;--danger-soft:#FDECEE;--radius:14px;--radius-sm:10px;
  --revenue:#0EA968;--revenue-soft:#E6F8EF;
  --purple:#8B5CF6;--purple-soft:#F3EEFE;--cyan:#0EA5C4;--cyan-soft:#E6F7FA;
  --font-display:'Space Grotesk','Noto Sans Thai','Segoe UI',sans-serif;
  --font-body:'Inter','Noto Sans Thai','Segoe UI',sans-serif;
  --font-mono:'JetBrains Mono','SFMono-Regular',Consolas,monospace;
  --sidebar-width:236px;
  --shadow-sm:0 1px 2px rgba(17,19,24,.04);
  --shadow-md:0 4px 16px rgba(17,19,24,.06);
  --shadow-lg:0 20px 48px rgba(17,19,24,.14);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:var(--font-body);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;letter-spacing:-0.005em}
#root{display:flex;min-height:100vh;position:relative}

/* ── Icon system (inline SVG, no emoji) ── */
.icon{display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}
.icon svg{width:100%;height:100%}

/* ── Sidebar ── */
.sidebar{width:var(--sidebar-width);flex-shrink:0;background:var(--surface);border-right:1px solid var(--border);padding:20px 12px;display:flex;flex-direction:column;gap:2px;position:sticky;top:0;height:100vh;overflow:auto;z-index:100;transition:transform .25s ease}
.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(17,19,24,.4);z-index:99;backdrop-filter:blur(2px)}
.hamburger-btn{display:none;position:fixed;top:14px;left:14px;z-index:200;background:#fff;border:1px solid var(--border);border-radius:10px;padding:9px 11px;font-size:18px;cursor:pointer;box-shadow:var(--shadow-md);align-items:center;justify-content:center}

.brand{font-family:var(--font-display);font-weight:700;font-size:17px;letter-spacing:-.02em;display:flex;align-items:center;gap:10px;padding:6px 10px 2px}
.brand-mark{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--primary),#8B93FF);display:flex;align-items:center;justify-content:center;color:#fff;font-size:13px;font-weight:700;box-shadow:0 2px 8px rgba(79,90,250,.35)}
.brand-sub{font-size:11px;color:var(--text-faint);padding:0 10px 16px;font-weight:500}

.nav-item{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:10px;font-size:13.5px;font-weight:500;color:var(--text-soft);cursor:pointer;border:0;background:none;text-align:left;width:100%;transition:.15s;position:relative}
.nav-item:hover{background:var(--bg);color:var(--text)}
.nav-item.active{background:var(--primary-soft);color:var(--primary-dark);font-weight:600}
.nav-icon{width:18px;height:18px;flex-shrink:0;display:flex;align-items:center;justify-content:center;color:currentColor;opacity:.85}
.nav-icon svg{width:17px;height:17px}
.nav-sep{height:1px;background:var(--border);margin:10px 8px}
.sidebar-foot{margin-top:auto;font-size:11px;color:var(--text-faint);padding:12px 10px;line-height:1.6;display:flex;align-items:center;gap:6px}
.status-dot{width:7px;height:7px;border-radius:50%;background:var(--success);flex-shrink:0;box-shadow:0 0 0 3px var(--success-soft)}

/* ── Main ── */
.main{flex:1;min-width:0;padding:28px 36px 60px}
.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;gap:16px;flex-wrap:wrap}
.page-title{font-family:var(--font-display);font-size:24px;font-weight:600;letter-spacing:-.02em;display:flex;align-items:center;gap:10px;flex-wrap:wrap;color:var(--text)}
.page-title .icon{width:22px;height:22px;color:var(--primary)}
.page-sub{color:var(--text-soft);font-size:13.5px;margin-top:4px}
.crumbs{font-size:12.5px;color:var(--text-faint);margin-bottom:6px;display:flex;align-items:center;gap:6px}
.crumbs span{color:var(--text-soft);cursor:pointer;display:flex;align-items:center;gap:5px}
.crumbs span .icon{width:13px;height:13px}
.crumbs span:hover{color:var(--primary)}

/* ── Buttons ── */
.btn{font-family:var(--font-body);font-size:13.5px;font-weight:600;padding:9px 16px;border-radius:10px;border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;display:inline-flex;align-items:center;gap:7px;white-space:nowrap;transition:.15s;min-height:40px}
.btn:hover{border-color:var(--text-faint);box-shadow:var(--shadow-sm)}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 2px 8px rgba(79,90,250,.25)}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);box-shadow:0 4px 12px rgba(79,90,250,.35)}
.btn-danger{color:var(--danger)}
.btn-danger:hover{background:var(--danger-soft);border-color:var(--danger)}
.btn-ghost{border-color:transparent;background:none}
.btn-ghost:hover{background:var(--bg);box-shadow:none}
.btn-sm{padding:6px 12px;font-size:12.5px;min-height:34px}
.btn-full{width:100%;justify-content:center}
.btn .icon{width:15px;height:15px}

/* ── Cards ── */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px 22px;margin-bottom:16px;overflow-x:auto;box-shadow:var(--shadow-sm)}
.card-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;flex-wrap:wrap;gap:8px}
.card-title{font-weight:600;font-size:14.5px;display:flex;align-items:center;gap:8px;color:var(--text)}
.card-title .icon{width:16px;height:16px;color:var(--primary)}

/* ── Badges ── */
.badge{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:600;padding:4px 10px;border-radius:99px;border:1px solid transparent;letter-spacing:.01em}
.badge-blue{background:var(--primary-soft);color:var(--primary-dark)}
.badge-amber{background:var(--warn-soft);color:#92600C}
.badge-green{background:var(--success-soft);color:#0D8A54}
.badge-red{background:var(--danger-soft);color:#C22F3B}
.badge-gray{background:#EEF0F4;color:var(--text-soft)}
.badge-purple{background:var(--purple-soft);color:#6D28D9}
.badge-cyan{background:var(--cyan-soft);color:var(--cyan)}

/* ── Tables ── */
.table-wrap{overflow-x:auto;margin:0 -4px;padding:0 4px}
table{width:100%;border-collapse:collapse;font-size:13.5px;min-width:480px}
th{text-align:left;font-size:11px;letter-spacing:.03em;color:var(--text-faint);font-weight:600;padding:10px 12px;border-bottom:1px solid var(--border);white-space:nowrap;text-transform:uppercase}
td{padding:13px 12px;border-bottom:1px solid var(--border-soft);vertical-align:middle}
tr:last-child td{border-bottom:none}
.num{font-family:var(--font-mono);text-align:right;font-size:13px}
.tright{text-align:right}
.row-click{cursor:pointer;transition:background .12s}
.row-click:hover{background:var(--bg)}
.mono{font-family:var(--font-mono)}
.muted{color:var(--text-soft)}
.faint{color:var(--text-faint)}
.text-red{color:var(--danger)}
.line-through{text-decoration:line-through;color:var(--text-faint)}

/* ── Stat cards ── */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:8px}
.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;position:relative;overflow:hidden;box-shadow:var(--shadow-sm)}
.stat-card::before{content:'';position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--primary);border-radius:0 3px 3px 0}
.stat-card.accent-revenue::before{background:var(--revenue)}
.stat-card.accent-purple::before{background:var(--purple)}
.stat-card.accent-cyan::before{background:var(--cyan)}
.stat-card.accent-danger::before{background:var(--danger)}
.stat-label{font-size:12px;color:var(--text-soft);margin-bottom:10px;font-weight:500;display:flex;align-items:center;gap:6px}
.stat-label .icon{width:14px;height:14px;opacity:.7}
.stat-value{font-family:var(--font-display);font-size:26px;font-weight:600;letter-spacing:-.02em}
.stat-foot{font-size:11.5px;color:var(--text-faint);margin-top:5px}

/* ── Stock cards ── */
.stock-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.stock-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:17px 18px;transition:.15s;box-shadow:var(--shadow-sm)}
.stock-card:hover{box-shadow:var(--shadow-md);border-color:#D8DAE8}
.stock-top{display:flex;justify-content:space-between;align-items:flex-start;gap:10px}
.stock-name{font-weight:600;font-size:14px;line-height:1.35;display:flex;align-items:center;gap:8px}
.stock-name .icon{width:16px;height:16px;color:var(--primary);flex-shrink:0}
.stock-cat{font-size:11.5px;color:var(--text-faint);margin-top:3px}
.stock-sku{font-family:var(--font-mono);font-size:11px;color:var(--text-faint)}
.stock-price{font-family:var(--font-mono);font-weight:600;font-size:14.5px;white-space:nowrap}
.gauge-wrap{margin-top:14px}
.gauge-labels{display:flex;justify-content:space-between;font-size:11px;color:var(--text-soft);margin-bottom:6px}
.gauge-track{height:7px;border-radius:99px;background:var(--border-soft);overflow:hidden;display:flex}
.stock-actions{display:flex;gap:8px;margin-top:14px}
.stock-actions .btn{flex:1;justify-content:center}

/* ── Forms ── */
.form-row{margin-bottom:14px}
.form-row label{display:block;font-size:12.5px;font-weight:600;color:var(--text-soft);margin-bottom:6px}
.form-grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}
input,select,textarea{width:100%;font-family:var(--font-body);font-size:14px;padding:10px 13px;border:1px solid var(--border);border-radius:9px;background:var(--bg);color:var(--text);transition:.15s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px var(--primary-soft)}

/* ── Modals ── */
.modal-overlay{position:fixed;inset:0;background:rgba(17,19,24,.5);backdrop-filter:blur(2px);display:flex;align-items:flex-start;justify-content:center;padding:40px 20px;overflow-y:auto;z-index:999}
.modal{background:#fff;border-radius:18px;width:100%;max-width:760px;padding:26px 28px 22px;box-shadow:var(--shadow-lg);margin:auto;max-height:90vh;overflow-y:auto}
.modal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}
.modal-title{font-family:var(--font-display);font-size:19px;font-weight:600;display:flex;align-items:center;gap:10px}
.modal-title .icon{width:18px;height:18px;color:var(--primary)}
.modal-close{background:none;border:0;font-size:22px;cursor:pointer;color:var(--text-faint);padding:6px 10px;border-radius:8px;transition:.15s;line-height:1}
.modal-close:hover{background:var(--bg);color:var(--text)}
.picker-list{max-height:260px;overflow-y:auto;border:1px solid var(--border);border-radius:11px}
.picker-row{display:flex;align-items:center;justify-content:space-between;padding:11px 13px;border-bottom:1px solid var(--border-soft);gap:10px;flex-wrap:wrap;transition:.12s}
.picker-row:hover{background:var(--bg)}
.picker-row:last-child{border-bottom:none}
.picker-info{display:flex;flex-direction:column;flex:1;min-width:120px}
.picker-name{font-size:13.5px;font-weight:600;display:flex;align-items:center;gap:6px}
.picker-name .icon{width:14px;height:14px;color:var(--primary)}
.picker-meta{font-size:11.5px;color:var(--text-faint)}
.item-line{display:flex;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid var(--border-soft);flex-wrap:wrap}
.item-line:last-child{border-bottom:none}
.item-line .name{flex:1;font-size:13.5px;font-weight:500;min-width:130px;display:flex;align-items:center;gap:6px}
.item-line .name .icon{width:14px;height:14px;color:var(--primary)}

/* ── Detail layout ── */
.detail-grid{display:grid;grid-template-columns:1fr 320px;gap:18px;align-items:start}
.timeline-item{display:flex;gap:12px;padding:11px 0}
.timeline-dot{width:28px;height:28px;border-radius:50%;background:var(--primary-soft);color:var(--primary-dark);display:flex;align-items:center;justify-content:center;font-size:12px;flex-shrink:0}
.timeline-dot .icon{width:13px;height:13px}
.timeline-body{flex:1}
.timeline-title{font-size:13.5px;font-weight:600}
.timeline-meta{font-size:11.5px;color:var(--text-faint);margin-top:2px}
.timeline-date{font-size:11.5px;color:var(--text-faint);white-space:nowrap}
.timeline-row{display:flex;justify-content:space-between;align-items:flex-start;gap:10px;flex-wrap:wrap}

/* ── Filters ── */
.filter-bar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.filter-group{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.filter-group-label{font-size:11.5px;color:var(--text-faint);font-weight:600;margin-right:2px}
.chip{font-family:var(--font-body);font-size:12.5px;font-weight:600;padding:7px 14px;border-radius:99px;border:1px solid var(--border);background:#fff;color:var(--text-soft);cursor:pointer;white-space:nowrap;transition:.15s}
.chip:hover{border-color:var(--text-faint)}
.chip.active{background:var(--primary);border-color:var(--primary);color:#fff}
.chip.active.chip-green{background:var(--success);border-color:var(--success)}
.chip.active.chip-amber{background:var(--warn);border-color:var(--warn);color:#5A3800}
.chip.active.chip-gray{background:var(--text-soft);border-color:var(--text-soft)}
.chip.active.chip-red{background:var(--danger);border-color:var(--danger)}

.empty{text-align:center;padding:56px 20px;color:var(--text-faint)}
.empty-icon{width:36px;height:36px;margin:0 auto 14px;color:var(--text-faint);opacity:.6}
.empty-icon .icon{width:100%;height:100%}
.search-input-wrap{position:relative;margin-bottom:10px}
.loading-overlay{position:fixed;inset:0;background:rgba(255,255,255,.9);display:flex;align-items:center;justify-content:center;z-index:9999;font-size:15px;color:var(--text-soft);flex-direction:column}
.loading-spinner{width:38px;height:38px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite;margin-bottom:16px}
@keyframes spin{to{transform:rotate(360deg)}}

/* ── Calendar ── */
.calendar-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:3px;text-align:center}
.calendar-grid .day-name{font-size:11px;font-weight:600;color:var(--text-faint);padding:8px 0;text-transform:uppercase}
.calendar-grid .day-cell{border-radius:10px;padding:3px;min-height:62px;display:flex;flex-direction:column;align-items:center;cursor:pointer;transition:.12s}
.calendar-grid .day-cell:hover{background:var(--primary-soft)}
.calendar-grid .day-cell.empty{cursor:default}
.calendar-grid .day-cell.empty:hover{background:transparent}
.day-number{font-size:13.5px;font-weight:500;width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center}
.day-cell.today .day-number{background:var(--primary);color:#fff;font-weight:700}
.day-cell.selected .day-number{background:var(--primary-dark);color:#fff;font-weight:700}
.event-badge{width:100%;padding:2px 5px;border-radius:5px;font-size:8px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px;line-height:1.5}
.event-badge.paid{background:var(--success);color:#fff}
.event-badge.partial{background:var(--warn);color:#5A3800}
.event-badge.unpaid{background:var(--danger);color:#fff}
.calendar-legend{display:flex;gap:14px;margin-top:14px;font-size:11.5px;color:var(--text-soft);flex-wrap:wrap}
.calendar-legend .dot{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:5px}
.dot.green{background:var(--success)}
.dot.amber{background:var(--warn)}
.dot.red{background:var(--danger)}

.monthly-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}
.monthly-card{background:var(--bg);border-radius:10px;padding:12px 8px;text-align:center;border:1px solid transparent;transition:.15s}
.monthly-card .month-label{font-size:10px;color:var(--text-faint);font-weight:600;text-transform:uppercase}
.monthly-card .month-count{font-family:var(--font-display);font-size:19px;font-weight:600;margin:5px 0 2px}
.monthly-card.highlight{background:var(--revenue-soft);border-color:rgba(14,169,104,.25)}
.check-result{margin-top:12px;padding:13px 15px;border-radius:11px;font-size:13.5px;display:flex;align-items:flex-start;gap:8px}
.check-result.ok{background:var(--success-soft);color:#0D8A54;border:1px solid rgba(23,178,106,.25)}
.check-result.warn{background:var(--warn-soft);color:#92600C;border:1px solid rgba(245,165,36,.3)}
.check-result.bad{background:var(--danger-soft);color:#C22F3B;border:1px solid rgba(240,68,82,.25)}
.discount-row{display:flex;align-items:center;gap:10px;padding:8px 0;border-top:1px solid var(--border);margin-top:6px;flex-wrap:wrap}
.discount-row label{font-size:13px;color:var(--text-soft);font-weight:600}
.discount-row input{width:80px;padding:6px 9px;text-align:right}

/* ── Signature pad ── */
.sig-canvas-wrap{border:1px solid var(--border);border-radius:11px;overflow:hidden;background:var(--bg);touch-action:none}
#sig-canvas{width:100%;height:180px;display:block;cursor:crosshair;touch-action:none}
.sig-preview{display:flex;align-items:center;gap:12px;padding:12px;border:1px solid var(--border);border-radius:11px;background:var(--bg);margin-bottom:14px}
.sig-preview img{height:50px;max-width:160px;object-fit:contain;background:#fff;border:1px solid var(--border);border-radius:7px;padding:4px}
.sig-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}

@media(max-width:1024px){
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .detail-grid{grid-template-columns:1fr}
  .main{padding:22px 24px 40px}
}
@media(max-width:768px){
  .hamburger-btn{display:flex!important}
  .sidebar{position:fixed;top:0;left:0;transform:translateX(-100%);width:280px;height:100vh;z-index:150;box-shadow:6px 0 30px rgba(0,0,0,.15);padding:18px 14px;border-radius:0 18px 18px 0}
  .sidebar.open{transform:translateX(0)}
  .sidebar-overlay.show{display:block}
  .main{padding:72px 14px 40px;margin-left:0}
  .page-title{font-size:19px}
  .topbar{flex-direction:column;align-items:stretch;gap:12px}
  .topbar .btn{width:100%;justify-content:center}
  .stock-grid,.form-grid2,.form-grid3{grid-template-columns:1fr}
  .modal{padding:20px 16px;max-height:95vh;border-radius:14px}
  .modal-overlay{padding:16px 12px}
  .picker-row{flex-direction:column;align-items:stretch}
  .monthly-grid{grid-template-columns:repeat(3,1fr)}
}
@media print{
  .no-print,.sidebar,.hamburger-btn,.sidebar-overlay{display:none!important}
  .main{padding:0}
  .card{border:0;box-shadow:none}
  .detail-grid{display:block}
}