@import url('https://fonts.googleapis.com/css2?family=Kantumruy+Pro:wght@300;400;500;600;700&display=swap');

:root{
  --primary:#6C5CE7;
  --primary-dark:#4834d4;
  --accent:#00d2d3;
  --danger:#ff6b6b;
  --success:#1dd1a1;
  --warn:#feca57;
  --bg:#f4f6fb;
  --card:#ffffff;
  --text:#2d3436;
  --radius:16px;
  --shadow:0 8px 24px rgba(108,92,231,.12);
  --trans:.28s cubic-bezier(.4,0,.2,1);
}

*{box-sizing:border-box; margin:0; padding:0;}
body{
  font-family:'Kantumruy Pro', 'Khmer OS', sans-serif;
  background:var(--bg);
  color:var(--text);
  min-height:100vh;
  animation:fadeIn .5s ease;
}

@keyframes fadeIn{from{opacity:0} to{opacity:1}}
@keyframes slideUp{from{opacity:0; transform:translateY(24px)} to{opacity:1; transform:translateY(0)}}
@keyframes slideInLeft{from{opacity:0; transform:translateX(-30px)} to{opacity:1; transform:translateX(0)}}
@keyframes pop{0%{transform:scale(.9); opacity:0} 100%{transform:scale(1); opacity:1}}
@keyframes pulseDot{0%,100%{box-shadow:0 0 0 0 rgba(255,107,107,.5)} 50%{box-shadow:0 0 0 8px rgba(255,107,107,0)}}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes shimmer{0%{background-position:-400px 0} 100%{background-position:400px 0}}

/* ===== Layout ===== */
.app{display:flex; min-height:100vh;}

.sidebar{
  width:250px; background:linear-gradient(160deg,var(--primary),var(--primary-dark));
  color:#fff; padding:24px 16px; position:sticky; top:0; height:100vh;
  animation:slideInLeft .4s ease;
  display:flex; flex-direction:column; gap:6px;
}
.brand{
  font-size:26px; font-weight:700; letter-spacing:1px; margin-bottom:28px;
  display:flex; align-items:center; gap:10px;
}
.brand span{font-size:13px; opacity:.7; font-weight:400; display:block;}
.sidebar a{
  color:#fff; text-decoration:none; padding:12px 16px; border-radius:12px;
  display:flex; align-items:center; gap:12px; font-size:15px;
  transition:background var(--trans), transform var(--trans), padding var(--trans);
  opacity:.85;
}
.sidebar a:hover, .sidebar a.active{
  background:rgba(255,255,255,.18); opacity:1; transform:translateX(4px);
}
.sidebar a.active{box-shadow:inset 0 0 0 1px rgba(255,255,255,.25);}

.main{flex:1; padding:28px 32px; animation:fadeIn .5s ease;}

.topbar{
  display:flex; justify-content:space-between; align-items:center; margin-bottom:24px;
  animation:slideUp .4s ease;
}
.topbar h1{font-size:24px; font-weight:600;}
.user-chip{
  background:var(--card); padding:8px 16px; border-radius:30px; box-shadow:var(--shadow);
  display:flex; align-items:center; gap:10px; transition:var(--trans);
}
.user-chip:hover{transform:translateY(-2px);}

/* ===== Cards ===== */
.grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:20px; margin-bottom:28px;}
.stat-card{
  background:var(--card); border-radius:var(--radius); padding:22px; box-shadow:var(--shadow);
  animation:pop .45s ease; transition:transform var(--trans), box-shadow var(--trans);
  position:relative; overflow:hidden;
}
.stat-card:hover{transform:translateY(-6px); box-shadow:0 14px 30px rgba(108,92,231,.2);}
.stat-card .icon{
  width:48px; height:48px; border-radius:14px; display:flex; align-items:center; justify-content:center;
  font-size:22px; margin-bottom:14px; color:#fff;
}
.stat-card h3{font-size:26px; font-weight:700;}
.stat-card p{color:#888; font-size:14px; margin-top:4px;}
.bg-purple{background:var(--primary);}
.bg-teal{background:var(--accent);}
.bg-orange{background:var(--warn);}
.bg-red{background:var(--danger);}

.card{
  background:var(--card); border-radius:var(--radius); padding:24px; box-shadow:var(--shadow);
  margin-bottom:24px; animation:slideUp .45s ease;
}

/* ===== Table ===== */
table{width:100%; border-collapse:collapse;}
th, td{padding:12px 14px; text-align:left; font-size:14.5px;}
thead th{color:#888; border-bottom:2px solid #eee; font-weight:600;}
tbody tr{transition:background var(--trans);}
tbody tr:hover{background:#f8f7ff;}
tbody tr{animation:fadeIn .4s ease;}
.badge{
  padding:4px 10px; border-radius:20px; font-size:12px; font-weight:600; display:inline-block;
}
.badge-green{background:#d2f8ea; color:#0a9963;}
.badge-red{background:#ffe0e0; color:#d63333;}
.badge-yellow{background:#fff3cd; color:#a9790a;}
.low-stock{position:relative;}
.low-stock::before{
  content:''; width:8px; height:8px; border-radius:50%; background:var(--danger);
  display:inline-block; margin-right:6px; animation:pulseDot 1.5s infinite;
}

/* ===== Buttons ===== */
.btn{
  border:none; padding:10px 18px; border-radius:10px; cursor:pointer; font-size:14.5px;
  font-family:inherit; font-weight:600; transition:transform var(--trans), box-shadow var(--trans), background var(--trans);
  display:inline-flex; align-items:center; gap:8px; text-decoration:none;
}
.btn:active{transform:scale(.96);}
.btn-primary{background:var(--primary); color:#fff;}
.btn-primary:hover{background:var(--primary-dark); box-shadow:0 6px 16px rgba(108,92,231,.35); transform:translateY(-2px);}
.btn-success{background:var(--success); color:#fff;}
.btn-success:hover{transform:translateY(-2px); box-shadow:0 6px 16px rgba(29,209,161,.35);}
.btn-danger{background:var(--danger); color:#fff;}
.btn-danger:hover{transform:translateY(-2px); box-shadow:0 6px 16px rgba(255,107,107,.35);}
.btn-outline{background:transparent; border:1.5px solid var(--primary); color:var(--primary);}
.btn-outline:hover{background:var(--primary); color:#fff;}
.btn-sm{padding:6px 12px; font-size:13px;}

/* ===== Forms ===== */
.form-group{margin-bottom:18px;}
label{display:block; margin-bottom:6px; font-size:14px; font-weight:600; color:#555;}
input, select, textarea{
  width:100%; padding:11px 14px; border:1.5px solid #e3e3ee; border-radius:10px;
  font-family:inherit; font-size:14.5px; transition:border var(--trans), box-shadow var(--trans);
  background:#fbfbfe;
}
input:focus, select:focus, textarea:focus{
  outline:none; border-color:var(--primary); box-shadow:0 0 0 4px rgba(108,92,231,.12);
}
.form-row{display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:16px;}

/* ===== Modal-like alert ===== */
.alert{
  padding:14px 18px; border-radius:12px; margin-bottom:18px; font-weight:500;
  animation:slideUp .35s ease; display:flex; justify-content:space-between; align-items:center;
}
.alert-success{background:#d2f8ea; color:#0a9963;}
.alert-danger{background:#ffe0e0; color:#d63333;}

/* ===== Search bar ===== */
.search-bar{
  display:flex; gap:12px; margin-bottom:20px; align-items:center; flex-wrap:wrap;
}
.search-bar input, .search-bar select{width:auto; min-width:200px;}

/* ===== POS / Invoice builder ===== */
.pos-grid{display:grid; grid-template-columns:2fr 1fr; gap:22px;}
.product-pick{
  background:var(--card); border-radius:14px; padding:14px; box-shadow:var(--shadow);
  cursor:pointer; transition:var(--trans); text-align:center; animation:pop .3s ease;
}
.product-pick:hover{transform:translateY(-4px) scale(1.02); box-shadow:0 10px 22px rgba(108,92,231,.2);}
.product-pick-grid{display:grid; grid-template-columns:repeat(auto-fill,minmax(130px,1fr)); gap:14px;}
.cart-item{
  display:flex; justify-content:space-between; align-items:center; padding:10px 0;
  border-bottom:1px solid #eee; animation:slideInLeft .25s ease;
}
.cart-total{
  display:flex; justify-content:space-between; font-size:18px; font-weight:700; margin-top:14px;
  padding-top:14px; border-top:2px dashed #ddd;
}

.tag-chip{
  display:inline-block; background:#efeafe; color:var(--primary-dark); font-size:11px; font-weight:600;
  padding:3px 9px; border-radius:20px; margin-right:5px; margin-top:3px;
}
.tag-chip-muted{background:#f4f4f4; color:#aaa;}

/* ===== Item detail modal ===== */
.modal-overlay{
  display:none; position:fixed; inset:0; background:rgba(20,15,45,.5); z-index:60;
  align-items:center; justify-content:center; padding:16px;
}
.modal-overlay.show{display:flex;}
.modal-box{
  background:#fff; border-radius:16px; padding:24px; width:100%; max-width:400px;
  max-height:90vh; overflow-y:auto; animation:pop .25s ease;
}

/* ===== Mobile sticky checkout bar (invoice_new.php) ===== */
.mobile-checkout-bar{display:none;}
@media (max-width:900px){
  .mobile-checkout-bar{
    display:flex; align-items:center; justify-content:space-between; gap:12px;
    position:fixed; left:0; right:0; bottom:64px; z-index:39;
    background:#fff; padding:12px 16px; box-shadow:0 -4px 16px rgba(0,0,0,.1);
  }
  .desktop-save-btn{display:none;}
  .pos-grid{padding-bottom:70px;}
}

/* ===== Loader ===== */
.loader{
  width:20px; height:20px; border:3px solid #eee; border-top-color:var(--primary);
  border-radius:50%; animation:spin .7s linear infinite; display:inline-block;
}

/* ===== Print Invoice / Warranty card ===== */
.invoice-wrap{max-width:820px; margin:18px auto; padding:0 14px;}
.invoice-actions-bar{
  display:flex; gap:10px; justify-content:center; align-items:center; padding:16px 0; flex-wrap:wrap;
}
.copy-divider{
  display:flex; align-items:center; gap:10px; color:#aaa; font-size:12px; margin:22px 0;
}
.copy-divider::before, .copy-divider::after{content:''; flex:1; border-top:2px dashed #ddd;}

.invoice-box{
  max-width:760px; margin:0 auto 22px; background:#fff; padding:28px 30px; border-radius:14px; box-shadow:var(--shadow);
  animation:slideUp .4s ease; border:1px solid #eee;
}
.invoice-copy-label{
  text-align:center; font-weight:700; font-size:13px; letter-spacing:1px; color:#fff;
  background:var(--primary); border-radius:20px; padding:6px 18px; display:inline-block; margin-bottom:14px;
}
.invoice-copy-label.warranty{background:var(--danger);}
.inv-head{
  display:flex; justify-content:space-between; align-items:flex-start; gap:14px;
  border-bottom:2px dashed #ddd; padding-bottom:14px; flex-wrap:wrap;
}
.inv-shop-name{
  font-family:'Kantumruy Pro','Khmer OS',sans-serif; font-weight:700; font-size:30px;
  color:var(--primary-dark); text-align:center; width:100%;
}
.inv-contact{display:flex; flex-direction:column; gap:4px; font-size:13.5px; color:#555;}
.inv-contact b{color:var(--text);}
.inv-qr-block{text-align:center;}
.inv-qr-block img{width:96px; height:96px; border-radius:8px; border:1px solid #eee; object-fit:contain; background:#fff;}
.inv-qr-block .aba{font-weight:700; color:#1c7ed6; font-size:13px; margin-top:4px;}
.inv-qr-block .brand-tag{font-weight:700; font-size:11px; color:#888; letter-spacing:1px;}

.inv-meta{
  display:grid; grid-template-columns:1fr 1fr; gap:6px 24px; margin-top:14px; font-size:14px;
}
.inv-meta div{border-bottom:1px dotted #ddd; padding:4px 0;}
.inv-meta b{color:#555; margin-right:6px;}

.inv-table{width:100%; border-collapse:collapse; margin-top:16px; border:1px solid #ddd;}
.inv-table th{
  padding:10px 12px; font-size:13.5px; color:#333; border:1px solid #ddd;
}
.inv-table th:nth-child(1){background:#c9c3f7;}
.inv-table th:nth-child(2){background:#e3ddfb;}
.inv-table th:nth-child(3){background:#f4d7ea;}
.inv-table th:nth-child(4){background:#f7c9d8;}
.inv-table td{padding:9px 12px; font-size:13.5px; border:1px solid #ddd; vertical-align:top;}
.inv-table td.desc-line{border-top:none; border-bottom:none; color:#555;}
.inv-table tr.item-total td{border-top:1px solid #ddd;}

.inv-total-row{
  display:flex; justify-content:flex-end; margin-top:4px;
}
.inv-total-box{
  display:flex; width:280px; max-width:100%; border:1px solid #1c1c4a; border-radius:6px; overflow:hidden;
}
.inv-total-box .label{
  flex:1; background:linear-gradient(90deg,#b7aef4,#f3c8e0); padding:10px 14px; font-weight:700; color:#2c2c50;
}
.inv-total-box .amount{padding:10px 14px; font-weight:700; background:#f9d3e2; min-width:90px; text-align:right;}

.inv-terms{margin-top:18px;}
.inv-terms h4{font-size:14px; color:var(--primary-dark); margin-bottom:8px;}
.inv-terms ul{padding-left:18px; font-size:12.5px; color:#555; line-height:1.7;}
.inv-terms .pct-line{margin-top:6px; font-size:12.5px; color:#333; font-weight:600;}

.inv-sign-row{
  display:flex; justify-content:space-between; align-items:flex-end; margin-top:30px; font-size:14px;
}
.inv-sign-row .sig{border-top:1px dotted #999; padding-top:4px; min-width:160px; text-align:center;}

@media print{
  .no-print{display:none !important;}
  body{background:#fff;}
  .invoice-wrap{max-width:100%; margin:0; padding:0;}
  .invoice-box{box-shadow:none; margin:0 auto 0; border:1px solid #999; page-break-inside:avoid;}
  .copy-divider{display:none;}
  .invoice-copy{page-break-after:always;}
  .invoice-copy:last-child{page-break-after:auto;}
}

/* ===== Mobile top bar + hamburger (hidden on desktop) ===== */
.mobile-topbar{
  display:none; align-items:center; justify-content:space-between;
  background:linear-gradient(160deg,var(--primary),var(--primary-dark)); color:#fff;
  padding:12px 14px; position:sticky; top:0; z-index:40; box-shadow:0 4px 14px rgba(0,0,0,.12);
}
.mobile-brand{font-weight:700; font-size:16px;}
.hamburger{
  width:40px; height:40px; border:none; background:rgba(255,255,255,.15); border-radius:10px;
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:4px; cursor:pointer;
}
.hamburger span{width:20px; height:2px; background:#fff; border-radius:2px; transition:var(--trans);}
.sidebar-overlay{
  display:none; position:fixed; inset:0; background:rgba(0,0,0,.45); z-index:45;
  opacity:0; transition:opacity var(--trans);
}
.sidebar-overlay.show{display:block; opacity:1;}

/* ===== Bottom nav (mobile only) ===== */
.bottom-nav{
  display:none; position:fixed; left:0; right:0; bottom:0; z-index:40;
  background:#fff; box-shadow:0 -4px 18px rgba(0,0,0,.1);
  padding:6px 4px calc(6px + env(safe-area-inset-bottom));
  justify-content:space-around; align-items:center;
}
.bottom-nav a{
  flex:1; display:flex; flex-direction:column; align-items:center; gap:2px;
  color:#999; text-decoration:none; font-size:11px; padding:4px 2px; border-radius:10px;
}
.bottom-nav a span{font-size:19px;}
.bottom-nav a.active{color:var(--primary); font-weight:700;}
.bottom-nav a.bottom-nav-main{
  color:#fff; background:var(--primary); border-radius:50%; width:52px; height:52px;
  justify-content:center; margin-top:-22px; box-shadow:0 6px 16px rgba(108,92,231,.4);
}
.bottom-nav a.bottom-nav-main span{font-size:22px;}
.bottom-nav a.bottom-nav-main.active{color:#fff;}

/* ===== Responsive tables ===== */
.table-scroll{width:100%; overflow-x:auto; -webkit-overflow-scrolling:touch;}
.table-scroll table{min-width:560px;}

/* ===== Responsive ===== */
@media (max-width:900px){
  .mobile-topbar{display:flex;}
  .app{flex-direction:column;}
  .sidebar{
    position:fixed; top:0; left:0; height:100vh; width:78vw; max-width:280px; z-index:50;
    transform:translateX(-100%); transition:transform var(--trans); flex-direction:column;
    overflow-y:auto; box-shadow:8px 0 30px rgba(0,0,0,.2);
  }
  .sidebar.open{transform:translateX(0);}
  .sidebar .brand{display:flex;}
  .main{padding:16px 14px 84px;}
  .topbar{margin-bottom:16px; flex-wrap:wrap; gap:10px;}
  .topbar h1{font-size:19px;}
  .grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:12px;}
  .stat-card{padding:16px;}
  .stat-card h3{font-size:21px;}
  .card{padding:16px; border-radius:14px;}
  .pos-grid{grid-template-columns:1fr; gap:16px;}
  .form-row{grid-template-columns:1fr; gap:12px;}
  .search-bar{flex-direction:column; align-items:stretch;}
  .search-bar input, .search-bar select{width:100%; min-width:0;}
  .btn{padding:12px 16px; font-size:14px;}
  table{font-size:13.5px;}
  th, td{padding:9px 10px;}
  .bottom-nav{display:flex;}
  .invoice-actions-bar{flex-direction:column;}
}

@media (max-width:420px){
  .grid{grid-template-columns:repeat(2,1fr);}
  .product-pick-grid{grid-template-columns:repeat(2,1fr);}
}

@media (max-width:640px){
  .invoice-box{padding:18px 14px;}
  .inv-shop-name{font-size:24px;}
  .inv-head{flex-direction:column; align-items:center; text-align:center;}
  .inv-meta{grid-template-columns:1fr;}
  .inv-table th, .inv-table td{padding:7px 8px; font-size:12px;}
  .inv-total-box{width:100%;}
  .inv-sign-row{flex-direction:column; align-items:flex-start; gap:26px;}
}