/* ==========================================================
   MEEZAN BOOK STORE — Shop management
   Warm paper, forest ink, and gold — like a real bookstore counter.
   ========================================================== */

:root{
  --ink:         #14261F;
  --ink-soft:    #1F3A30;
  --ink-mid:     #2C5346;
  --gold:        #C9A227;
  --gold-bright: #E0B83A;
  --gold-tint:   #F8EFDA;
  --sage:        #3D6B54;
  --sage-tint:   #E6F0EA;
  --clay:        #B45A32;
  --clay-tint:   #F8EBE4;

  --bg:          #F3EBDC;
  --bg-wash:     #E9DFCC;
  --surface:     #FFFCF6;
  --border:      #D9CBB4;
  --text:        #1E2A24;
  --text-soft:   #6A6458;

  --success:     #2F7A52;
  --success-bg:  #E5F3EA;
  --warning:     #B7791F;
  --warning-bg:  #F8EED8;
  --danger:      #B3261E;
  --danger-bg:   #FAEAE8;
  --info:        #2E6E8E;
  --info-bg:     #E8F1F5;

  --shadow:      0 10px 28px rgba(20, 38, 31, 0.08);
  --shadow-sm:   0 2px 8px rgba(20, 38, 31, 0.05);

  --font-body:    'Source Sans 3', -apple-system, Segoe UI, sans-serif;
  --font-heading: 'Fraunces', Georgia, serif;

  --radius:    14px;
  --radius-sm: 9px;
}

*{ box-sizing: border-box; }

html, body{
  margin: 0;
  padding: 0;
  background:
    radial-gradient(1200px 500px at 100% -10%, rgba(201,162,39,0.12), transparent 50%),
    var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

button, input, select{
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

.num-cell, .stat-value, .mono,
.summary-row span:last-child, #cart-total-amount{
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

.app{
  display: flex;
  min-height: 100vh;
}

/* ---------- Sidebar ---------- */
.sidebar{
  width: 258px;
  flex-shrink: 0;
  background:
    linear-gradient(180deg, #1A332A 0%, var(--ink) 42%, #101C18 100%);
  color: #D5DDD6;
  display: flex;
  flex-direction: column;
  padding: 22px 16px;
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: 40;
  box-shadow: 8px 0 28px rgba(20, 38, 31, 0.12);
}

.brand{
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
  padding: 4px 8px 20px;
  border-bottom: 1px solid rgba(224, 184, 58, 0.22);
}
.logo-mark{
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: 11px;
  background: linear-gradient(160deg, rgba(224,184,58,0.28), rgba(201,162,39,0.08));
  color: var(--gold-bright);
  box-shadow: inset 0 0 0 1px rgba(224,184,58,0.25);
}
.logo-mark svg{ width: 22px; height: 22px; }

.brand-text h1{
  font-family: var(--font-heading);
  font-size: 17px;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0;
  font-weight: 700;
  color: #FFF8E8;
}
.brand-tag{
  margin: 4px 0 0;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #B7C4BB;
}

.nav{
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}
.nav-btn{
  display: flex;
  align-items: center;
  gap: 11px;
  width: 100%;
  background: none;
  border: none;
  border-radius: 10px;
  text-align: left;
  color: #B3C0B8;
  padding: 10px 12px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: background .18s ease, color .18s ease, box-shadow .18s ease;
}
.nav-icon{
  display: flex;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}
.nav-icon svg{ width: 100%; height: 100%; }

.nav-btn:hover{ background: rgba(255,255,255,0.06); color: #fff; }
.nav-btn.active{
  background: rgba(224, 184, 58, 0.14);
  color: #FFF8E8;
  box-shadow: inset 0 0 0 1px rgba(224, 184, 58, 0.28);
}
.nav-btn.active .nav-icon{ color: var(--gold-bright); }

.sidebar-footer{
  margin-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 16px 6px 0;
}
.footer-title{
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #9AAB9F;
  margin: 0 0 4px;
}
.footer-note{
  font-size: 12px;
  color: #8A9A8F;
  line-height: 1.5;
  margin: 0 0 12px;
}

.ghost-btn{
  display: block;
  width: 100%;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.18);
  color: #E6EDE8;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  text-align: center;
  margin-bottom: 8px;
  transition: border-color .15s ease, background .15s ease, color .15s ease;
}
.ghost-btn:hover{
  border-color: var(--gold);
  background: rgba(201,162,39,0.12);
  color: #fff;
}
.ghost-btn.light{
  width: auto;
  border-color: var(--border);
  color: var(--ink);
  background: var(--surface);
  margin-bottom: 0;
}
.ghost-btn.light:hover{
  border-color: var(--ink-mid);
  background: var(--gold-tint);
  color: var(--ink);
}
.file-label{ display: inline-block; }

/* ---------- Mobile top bar ---------- */
.mobile-topbar{
  display: none;
  align-items: center;
  gap: 12px;
  background: var(--ink);
  color: #fff;
  padding: 12px 16px;
  position: sticky;
  top: 0;
  z-index: 30;
}
.menu-toggle{
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid rgba(255,255,255,0.28);
  color: #fff;
  border-radius: var(--radius-sm);
  width: 32px;
  height: 32px;
  cursor: pointer;
}
.menu-toggle svg{ width: 18px; height: 18px; }
.mobile-brand{ display: flex; align-items: center; gap: 9px; }
.mobile-brand .logo-mark{ width: 28px; height: 28px; }
.mobile-brand .logo-mark svg{ width: 16px; height: 16px; }
.mobile-brand-text{
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: -0.01em;
}

.sidebar-overlay{
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(16, 28, 24, 0.5);
  z-index: 35;
}

/* ---------- Main ---------- */
.main{
  flex: 1;
  padding: 32px 40px 48px;
  max-width: 1240px;
  min-width: 0;
}

.view{ display: none; }
.view.active{ display: block; }

.view-head{
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.view-head h2{
  font-family: var(--font-heading);
  font-size: 30px;
  margin: 0 0 6px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ink);
}
.subtle{ color: var(--text-soft); font-size: 14px; margin: 0; }

/* ---------- Stat blocks ---------- */
.stat-grid{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}
.stat-block{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}
.stat-block::before{
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--gold);
}
.stat-block.accent-gold::before{ background: var(--gold); }
.stat-block.accent-sage::before{ background: var(--sage); }
.stat-block.accent-ink::before{ background: var(--ink-mid); }
.stat-block.accent-clay::before{ background: var(--clay); }
.stat-block.accent-warn::before{ background: var(--warning); }

.stat-icon{
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: 11px;
  background: var(--gold-tint);
  color: var(--ink-mid);
}
.accent-gold .stat-icon{ background: var(--gold-tint); color: #8A6E16; }
.accent-sage .stat-icon{ background: var(--sage-tint); color: var(--sage); }
.accent-ink .stat-icon{ background: #E4EEE9; color: var(--ink-soft); }
.accent-clay .stat-icon{ background: var(--clay-tint); color: var(--clay); }
.stat-icon.warn{ background: var(--warning-bg); color: var(--warning); }
.stat-icon svg{ width: 19px; height: 19px; }

.stat-info{ display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.stat-label{
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-soft);
}
.stat-value{
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.stat-hint{ font-size: 12px; color: var(--text-soft); }

/* ---------- Panels / tables ---------- */
.panel{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-sm);
}
.panel-head{
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.panel h3{
  font-family: var(--font-heading);
  font-size: 18px;
  margin: 0;
  font-weight: 600;
  color: var(--ink);
}
.filter-row{ display: flex; gap: 8px; flex-wrap: wrap; }

input[type="text"], input[type="number"], input[type="search"], input[type="tel"], select{
  background: #FFFEFA;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}
input[type="search"]{ min-width: 210px; }
input:focus, select:focus{
  border-color: var(--ink-mid);
  box-shadow: 0 0 0 3px rgba(44, 83, 70, 0.14);
}

.table-wrap{ overflow-x: auto; }
table{
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}
thead th{
  text-align: left;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-soft);
  background: var(--bg-wash);
  border-bottom: 1px solid var(--border);
  padding: 11px 12px;
  white-space: nowrap;
}
tbody td{
  padding: 11px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
tbody tr:last-child td{ border-bottom: none; }
tbody tr:hover{ background: #F7F1E6; }
.num-cell{ text-align: right; }
.qty-input{ width: 60px; padding: 5px 6px; text-align: right; }

.empty-row td{
  text-align: center;
  color: var(--text-soft);
  padding: 26px 10px;
}
.empty-note{
  text-align: center;
  color: var(--text-soft);
  font-size: 13px;
  padding: 16px 10px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  border: 1px dashed var(--border);
}

.badge{
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
}
.badge::before{
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.badge-ok::before{ background: var(--success); }
.badge-low::before{ background: var(--warning); }
.badge-out::before{ background: var(--danger); }

/* ---------- Buttons ---------- */
.primary-btn{
  background: linear-gradient(180deg, var(--ink-soft) 0%, var(--ink) 100%);
  color: #FFF8E8;
  border: none;
  padding: 11px 20px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  cursor: pointer;
  font-size: 14px;
  box-shadow: 0 1px 0 rgba(255,255,255,0.12) inset, 0 6px 14px rgba(20,38,31,0.18);
  transition: filter .15s ease, transform .12s ease;
}
.primary-btn:hover{ filter: brightness(1.08); }
.primary-btn:active{ transform: translateY(1px); }
.primary-btn:disabled{
  background: #C5C0B4;
  box-shadow: none;
  cursor: not-allowed;
  filter: none;
}

.icon-btn{
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--ink);
  border-radius: var(--radius-sm);
  padding: 5px 11px;
  cursor: pointer;
  font-size: 12.5px;
  font-weight: 600;
  margin-right: 4px;
}
.icon-btn:hover{ border-color: var(--ink-mid); background: var(--sage-tint); }
.icon-btn.danger{ color: var(--danger); }
.icon-btn.danger:hover{ border-color: var(--danger); background: var(--danger-bg); }

/* ---------- Forms ---------- */
.form-panel{ max-width: 640px; }
.field{ margin-bottom: 15px; display: flex; flex-direction: column; gap: 6px; }
.field label{ font-size: 12.5px; font-weight: 700; color: var(--text-soft); }
.field-row{ display: flex; gap: 14px; flex-wrap: wrap; }
.field-row .field{ flex: 1; min-width: 160px; }

.form-msg{ font-size: 12.5px; min-height: 18px; margin-top: 8px; font-weight: 600; }
.form-msg.success{ color: var(--success); }
.form-msg.error{ color: var(--danger); }

.info-note{
  background: var(--info-bg);
  color: var(--info);
  border-left: 3px solid var(--info);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: 12.5px;
  margin-bottom: 12px;
}

/* ---------- Sell view ---------- */
.sell-grid{
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 16px;
  align-items: start;
}
.sell-item-list{ max-height: 460px; overflow-y: auto; }
.cart-panel{ position: sticky; top: 30px; }

.summary-box{
  border-top: 1px solid var(--border);
  margin-top: 12px;
  padding-top: 12px;
}
.summary-row{
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px 0;
  font-size: 13.5px;
  color: var(--text-soft);
}
.summary-row input[type="number"]{ width: 100px; text-align: right; }
.summary-row.total-row{
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 20px;
  color: var(--ink);
  border-top: 2px solid var(--gold);
  padding-top: 10px;
  margin-top: 6px;
}

#checkout-btn{ width: 100%; margin-top: 14px; }

@media (max-width: 980px){
  .sell-grid{ grid-template-columns: 1fr; }
  .cart-panel{ position: static; }
}

/* ---------- Bill / receipt modal ---------- */
.modal{
  position: fixed;
  inset: 0;
  background: rgba(16, 28, 24, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
  flex-direction: column;
  gap: 16px;
}
.modal.hidden{ display: none; }

.modal-card{
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  max-height: 82vh;
  overflow-y: auto;
}

.modal-card.receipt{
  width: 330px;
  padding: 24px 22px 30px;
}
.receipt-header{ text-align: center; margin-bottom: 12px; }
.receipt-header .r-name{
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  margin: 0;
  color: var(--ink);
}
.receipt hr{ border: none; border-top: 1px dashed var(--border); margin: 10px 0; }
.receipt .r-meta{ font-size: 12px; }
.receipt .r-row{ display: flex; justify-content: space-between; margin: 2px 0; }

.receipt-table{ width: 100%; border-collapse: collapse; font-size: 12px; margin: 8px 0; }
.receipt-table th{
  text-align: left;
  font-size: 10.5px;
  font-weight: 600;
  color: var(--text-soft);
  border-bottom: 1px dashed var(--border);
  padding: 4px 2px;
}
.receipt-table th:nth-child(2), .receipt-table td:nth-child(2),
.receipt-table th:nth-child(3), .receipt-table td:nth-child(3),
.receipt-table th:last-child, .receipt-table td:last-child{ text-align: right; }
.receipt-table td{ padding: 4px 2px; vertical-align: top; }

.receipt .r-summary .r-row{ font-size: 12.5px; }
.receipt .r-total{
  font-weight: 700;
  font-size: 14.5px;
  color: var(--ink);
  border-top: 1px solid var(--gold);
  padding-top: 6px;
  margin-top: 4px;
}
.receipt .r-thanks{
  text-align: center;
  margin-top: 16px;
  font-size: 11.5px;
  color: var(--text-soft);
  line-height: 1.5;
}

.modal-actions{ display: flex; gap: 10px; }

.modal-card.form-card{
  width: 420px;
  padding: 22px;
}
.modal-card.form-card h3{
  margin-top: 0;
  font-family: var(--font-heading);
  color: var(--ink);
}

@media print{
  body *{ visibility: hidden; }
  .modal-card.receipt, .modal-card.receipt *{ visibility: visible; }
  .modal-card.receipt{
    position: fixed; top: 0; left: 0; width: 100%;
    border: none; box-shadow: none; max-height: none;
  }
  .modal-card.receipt, .modal-card.receipt *{
    color: #000 !important;
    background: #fff !important;
    border-color: #000 !important;
  }
  .no-print{ display: none !important; }
}

/* ---------- Toasts ---------- */
.toast-container{
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 200;
}
.toast{
  background: var(--ink);
  color: #FFF8E8;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 8px 22px rgba(20,38,31,0.28);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .2s ease, transform .2s ease;
}
.toast.show{ opacity: 1; transform: translateY(0); }
.toast-success{ background: var(--success); }
.toast-error{ background: var(--danger); }

/* ---------- Responsive ---------- */
@media (max-width: 900px){
  .main{ padding: 22px 18px; }
}

@media (max-width: 780px){
  .mobile-topbar{ display: flex; }
  .sidebar{
    position: fixed;
    left: 0; top: 0;
    height: 100vh;
    transform: translateX(-100%);
    transition: transform .2s ease;
  }
  .sidebar.open{ transform: translateX(0); }
  .sidebar-overlay.open{ display: block; }
  .app{ flex-direction: column; }
  .field-row{ flex-direction: column; }
  .stat-grid{ grid-template-columns: repeat(2, 1fr); }
  .modal-card.receipt, .modal-card.form-card{ width: 100%; max-width: 360px; }
}

@media (max-width: 480px){
  .stat-grid{ grid-template-columns: 1fr; }
  input[type="search"]{ min-width: 0; width: 100%; }
  .panel-head{ flex-direction: column; align-items: stretch; }
  .filter-row{ flex-direction: column; }
}

::-webkit-scrollbar{ width: 9px; height: 9px; }
::-webkit-scrollbar-thumb{ background: var(--border); border-radius: 8px; }
::-webkit-scrollbar-track{ background: transparent; }