/* ============================================================
   assets/css/inventra.css — Inventra Design System v3
   ============================================================ */

:root {
  --inv-bg:        #0d0f14;
  --inv-surface:   #151820;
  --inv-surface2:  #1e2130;
  --inv-border:    #2a2f45;
  --inv-primary:   #4f8ef7;
  --inv-primary-h: #6fa2ff;
  --inv-accent:    #f7c948;
  --inv-success:   #3ecf8e;
  --inv-danger:    #f05454;
  --inv-warning:   #f7c948;
  --inv-text:      #e8ecf5;
  --inv-muted:     #7a84a0;
  --inv-radius:    12px;
  --inv-shadow:    0 4px 24px rgba(0,0,0,.4);
  --font-main:     'Space Grotesk', sans-serif;
  --font-mono:     'JetBrains Mono', monospace;
}

*{box-sizing:border-box;margin:0;padding:0}

body{background:var(--inv-bg);color:var(--inv-text);font-family:var(--font-main);font-size:15px;min-height:100vh}

/* ── Navbar ── */
.inv-navbar{background:var(--inv-surface)!important;border-bottom:1px solid var(--inv-border);padding:.5rem 1rem;position:sticky;top:0;z-index:1000}
.inv-brand{font-weight:700;font-size:1.2rem;color:var(--inv-primary)!important;letter-spacing:-.5px}
.inv-navbar .nav-link{color:var(--inv-muted)!important;font-size:.82rem;font-weight:500;padding:.4rem .65rem!important;border-radius:7px;transition:.15s}
.inv-navbar .nav-link:hover,.inv-navbar .nav-link.active{color:var(--inv-text)!important;background:var(--inv-surface2)}
.inv-navbar .nav-link i{margin-right:4px}
.inv-navbar .navbar-toggler{border-color:var(--inv-border)}
.inv-navbar .navbar-toggler-icon{filter:invert(1)}

/* Dropdown */
.inv-dd{background:var(--inv-surface)!important;border:1px solid var(--inv-border)!important;border-radius:10px!important;padding:.4rem!important;min-width:200px!important;box-shadow:var(--inv-shadow)!important}
.inv-dd-item{color:var(--inv-text)!important;border-radius:7px!important;padding:.45rem .85rem!important;font-size:.85rem!important;transition:.12s!important}
.inv-dd-item:hover{background:var(--inv-surface2)!important;color:var(--inv-primary)!important}
.inv-dd-item i{margin-right:8px;width:16px}

/* ── Cards ── */
.inv-card{background:var(--inv-surface);border:1px solid var(--inv-border);border-radius:var(--inv-radius);padding:1.5rem;box-shadow:var(--inv-shadow)}
.inv-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.25rem;padding-bottom:.75rem;border-bottom:1px solid var(--inv-border)}
.inv-card-header h5{font-weight:600;font-size:1rem;color:var(--inv-text);margin:0}

/* ── Stat cards ── */
.stat-card{background:var(--inv-surface);border:1px solid var(--inv-border);border-radius:var(--inv-radius);padding:1.25rem 1.5rem;position:relative;overflow:hidden;transition:transform .2s,border-color .2s}
.stat-card:hover{transform:translateY(-2px);border-color:var(--inv-primary)}
.stat-card .stat-icon{position:absolute;right:1.25rem;top:1.25rem;font-size:2rem;opacity:.15}
.stat-card .stat-label{font-size:.75rem;color:var(--inv-muted);text-transform:uppercase;letter-spacing:.08em;font-weight:600}
.stat-card .stat-value{font-size:1.65rem;font-weight:700;color:var(--inv-text);font-family:var(--font-mono);margin-top:.2rem}
.stat-card.primary{border-left:3px solid var(--inv-primary)}
.stat-card.success{border-left:3px solid var(--inv-success)}
.stat-card.warning{border-left:3px solid var(--inv-warning)}
.stat-card.danger {border-left:3px solid var(--inv-danger)}

/* ── Tables ── */
.inv-table{width:100%;border-collapse:collapse;font-size:.875rem}
.inv-table th{background:var(--inv-surface2);color:var(--inv-muted);font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;font-weight:600;padding:.75rem 1rem;border-bottom:1px solid var(--inv-border)}
.inv-table td{padding:.7rem 1rem;border-bottom:1px solid rgba(42,47,69,.5);color:var(--inv-text);vertical-align:middle}
.inv-table tbody tr:hover{background:var(--inv-surface2)}

/* ── Buttons ── */
.btn-inv{font-family:var(--font-main);font-weight:600;font-size:.85rem;padding:.45rem 1.1rem;border-radius:8px;border:none;cursor:pointer;transition:.15s;display:inline-flex;align-items:center;gap:6px;text-decoration:none}
.btn-inv-primary{background:var(--inv-primary);color:#fff}
.btn-inv-primary:hover{background:var(--inv-primary-h);color:#fff}
.btn-inv-success{background:var(--inv-success);color:#061a0e}
.btn-inv-success:hover{filter:brightness(1.1);color:#061a0e}
.btn-inv-danger{background:var(--inv-danger);color:#fff}
.btn-inv-danger:hover{filter:brightness(1.1);color:#fff}
.btn-inv-warning{background:var(--inv-warning);color:#1a1000}
.btn-inv-warning:hover{filter:brightness(1.1);color:#1a1000}
.btn-inv-outline{background:transparent;border:1px solid var(--inv-border);color:var(--inv-text)}
.btn-inv-outline:hover{border-color:var(--inv-primary);color:var(--inv-primary)}
.btn-inv:disabled{opacity:.5;cursor:not-allowed}
.btn-sm{padding:.25rem .6rem!important;font-size:.78rem!important}

/* ── Forms ── */
.inv-input{background:var(--inv-surface2);border:1px solid var(--inv-border);color:var(--inv-text);border-radius:8px;padding:.5rem .875rem;font-family:var(--font-main);font-size:.875rem;width:100%;transition:.15s}
.inv-input:focus{outline:none;border-color:var(--inv-primary);box-shadow:0 0 0 3px rgba(79,142,247,.15)}
.inv-input::placeholder{color:var(--inv-muted)}
select.inv-input option{background:var(--inv-surface2)}
textarea.inv-input{resize:vertical;min-height:70px}
.inv-label{display:block;font-size:.75rem;font-weight:600;color:var(--inv-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.3rem}

/* ── POS layout ── */
.pos-layout{display:grid;grid-template-columns:1fr 420px;gap:1rem;height:calc(100vh - 60px);padding:1rem}
.pos-left{display:flex;flex-direction:column;gap:.85rem;overflow:hidden}
.pos-right{display:flex;flex-direction:column;gap:.75rem;overflow-y:auto}
.barcode-input-wrap{position:relative}
.barcode-input-wrap i{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--inv-muted);font-size:1.1rem}
#barcode-input{padding-left:42px;font-size:1.05rem;font-family:var(--font-mono);background:var(--inv-surface2);border:2px solid var(--inv-primary);color:var(--inv-text);border-radius:10px;height:50px;width:100%;transition:.2s}
#barcode-input:focus{box-shadow:0 0 0 4px rgba(79,142,247,.2);outline:none}
.cart-table-wrap{flex:1;overflow-y:auto;border-radius:var(--inv-radius);border:1px solid var(--inv-border)}
.pos-total-bar{background:var(--inv-surface);border:1px solid var(--inv-border);border-radius:var(--inv-radius);padding:1rem 1.25rem}
.pos-total-bar .grand-total{font-size:1.9rem;font-weight:700;color:var(--inv-accent);font-family:var(--font-mono)}

/* ── Badges ── */
.inv-badge{display:inline-block;padding:.2em .65em;border-radius:20px;font-size:.72rem;font-weight:600}
.badge-success{background:rgba(62,207,142,.15);color:var(--inv-success)}
.badge-danger {background:rgba(240,84,84,.15); color:var(--inv-danger)}
.badge-warning{background:rgba(247,201,72,.15);color:var(--inv-warning)}
.badge-primary{background:rgba(79,142,247,.15);color:var(--inv-primary)}

/* ── Alerts ── */
.inv-alert{padding:.8rem 1rem;border-radius:8px;font-size:.875rem;display:flex;align-items:center;gap:10px;margin-bottom:.75rem}
.inv-alert-danger {background:rgba(240,84,84,.1); border:1px solid rgba(240,84,84,.3); color:var(--inv-danger)}
.inv-alert-success{background:rgba(62,207,142,.1);border:1px solid rgba(62,207,142,.3);color:var(--inv-success)}
.inv-alert-warning{background:rgba(247,201,72,.1);border:1px solid rgba(247,201,72,.3);color:var(--inv-warning)}

/* ── Modal ── */
.modal-content{background:var(--inv-surface)!important;border:1px solid var(--inv-border)!important;color:var(--inv-text)!important;border-radius:var(--inv-radius)!important}
.modal-header{border-bottom:1px solid var(--inv-border)!important}
.modal-footer{border-top:1px solid var(--inv-border)!important}
.btn-close-white{filter:invert(1) grayscale(100%) brightness(200%)}

/* ── Layout ── */
.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem;flex-wrap:wrap;gap:.75rem}
.page-header h2{font-weight:700;font-size:1.35rem;color:var(--inv-text)}
.inv-container{padding:1.25rem 1.5rem;max-width:1700px;margin:0 auto}

/* ── Search ── */
.inv-search{position:relative}
.inv-search i{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--inv-muted)}
.inv-search input{padding-left:36px}

/* ── Stock rows ── */
.low-stock-row{background:rgba(247,201,72,.04)!important}
.out-stock-row{background:rgba(240,84,84,.05)!important}

/* ── Nav tabs (Bootstrap override) ── */
.nav-tabs .nav-link{color:var(--inv-muted)!important;border:none!important;border-bottom:2px solid transparent!important;padding:.6rem 1rem!important;font-size:.875rem!important;font-weight:500}
.nav-tabs .nav-link.active{color:var(--inv-primary)!important;border-bottom-color:var(--inv-primary)!important;background:transparent!important}
.nav-tabs{border-bottom:1px solid var(--inv-border)!important}
.tab-content{padding-top:1.25rem}

/* ── Progress bars ── */
.inv-progress{background:var(--inv-surface2);border-radius:4px;height:6px;overflow:hidden}
.inv-progress-bar{height:100%;border-radius:4px;background:var(--inv-primary);transition:width .3s}

/* ── Scrollbars ── */
::-webkit-scrollbar{width:5px;height:5px}
::-webkit-scrollbar-track{background:var(--inv-bg)}
::-webkit-scrollbar-thumb{background:var(--inv-border);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--inv-muted)}

/* ── Landing page ── */
.landing-hero{min-height:100vh;background:linear-gradient(135deg,#0d0f14 0%,#151c35 50%,#0d0f14 100%);display:flex;align-items:center;justify-content:center;text-align:center;position:relative;overflow:hidden}
.landing-hero::before{content:'';position:absolute;width:600px;height:600px;background:radial-gradient(circle,rgba(79,142,247,.15) 0%,transparent 70%);top:50%;left:50%;transform:translate(-50%,-50%);pointer-events:none}
.hero-title{font-size:clamp(2.5rem,6vw,5rem);font-weight:700;line-height:1.1;letter-spacing:-2px}
.hero-accent{color:var(--inv-primary)}
.feature-card{background:var(--inv-surface);border:1px solid var(--inv-border);border-radius:var(--inv-radius);padding:2rem 1.5rem;text-align:center;transition:.2s}
.feature-card:hover{transform:translateY(-4px);border-color:var(--inv-primary)}
.feature-icon{font-size:2.5rem;margin-bottom:1rem}

/* ── Print ── */
@media print{
  .no-print{display:none!important}
  body{background:#fff;color:#000;font-family:monospace;font-size:12px}
  .thermal-bill{width:80mm;margin:0 auto;padding:5mm}
  .inv-navbar,.pos-right{display:none!important}
}

/* ── Responsive ── */
@media(max-width:768px){
  .pos-layout{grid-template-columns:1fr;height:auto}
  .inv-container{padding:.75rem}
  .stat-card .stat-value{font-size:1.3rem}
  .pos-right{order:-1}
}

/* ── Animations ── */
@keyframes fadeIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
.fade-in{animation:fadeIn .2s ease}

/* ── Day session status strip ── */
.day-status-strip{background:var(--inv-surface2);border-bottom:1px solid var(--inv-border);padding:3px 1rem;font-size:.75rem;display:flex;justify-content:space-between;align-items:center;color:var(--inv-muted)}

/* ── Notification panel ── */
.notif-item{display:flex;gap:12px;padding:.65rem .75rem;border-radius:8px;margin-bottom:.5rem;align-items:flex-start;transition:.15s}
.notif-item:hover{background:var(--inv-surface2)}
.notif-icon{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:.85rem}

/* ── Price override highlight ── */
.price-overridden{background:rgba(247,201,72,.1);border:1px dashed var(--inv-warning)!important}

/* ── Table of contents ── */
.toc-item{display:flex;align-items:center;padding:.5rem .75rem;border-radius:8px;cursor:pointer;transition:.15s;font-size:.875rem}
.toc-item:hover{background:var(--inv-surface2);color:var(--inv-primary)}
.toc-item i{width:20px;margin-right:10px;color:var(--inv-muted)}