/* ═══════════════════════════════════════════════════
   SPARK CCTV — Billing System CSS
   Design: Dark sidebar + Clean white content area
════════════════════════════════════════════════════ */
:root {
  --primary: #0057FF;
  --primary-dark: #003EC4;
  --primary-light: #EEF2FF;
  --accent: #00D4FF;
  --dark: #0A0E1A;
  --dark2: #111827;
  --sidebar-bg: #0F172A;
  --sidebar-width: 260px;
  --white: #FFFFFF;
  --light: #F8FAFF;
  --border: #E5E9F2;
  --text: #1E293B;
  --text-muted: #64748B;
  --success: #10B981;
  --warning: #F59E0B;
  --danger: #EF4444;
  --info: #3B82F6;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
  --radius: 10px;
  --radius-lg: 16px;
  --transition: 0.2s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,-apple-system,sans-serif;background:var(--light);color:var(--text);line-height:1.6;font-size:14px}
a{text-decoration:none;color:inherit}
ul{list-style:none}
img{max-width:100%}
input,select,textarea,button{font-family:inherit;font-size:14px}

/* ── SIDEBAR ── */
.sidebar{position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-width);background:var(--sidebar-bg);display:flex;flex-direction:column;z-index:100;overflow-y:auto;overflow-x:hidden}
.sidebar-brand{padding:20px 20px 16px;border-bottom:1px solid rgba(255,255,255,0.06);flex-shrink:0}
.brand-logo{display:flex;align-items:center;gap:10px}
.brand-icon{width:36px;height:36px;background:var(--primary);border-radius:8px;display:flex;align-items:center;justify-content:center;color:white;font-size:16px}
.brand-name{font-size:16px;font-weight:700;color:white;letter-spacing:0.3px}
.brand-sub{font-size:10px;color:rgba(255,255,255,0.35);letter-spacing:1.5px;text-transform:uppercase;margin-top:1px}
.sidebar-nav{padding:12px 12px;flex:1}
.nav-section-label{font-size:10px;font-weight:600;letter-spacing:1.5px;text-transform:uppercase;color:rgba(255,255,255,0.25);padding:12px 8px 6px}
.nav-item{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:8px;color:rgba(255,255,255,0.55);font-size:13px;font-weight:500;transition:all var(--transition);margin-bottom:1px;cursor:pointer}
.nav-item:hover{background:rgba(255,255,255,0.06);color:rgba(255,255,255,0.9)}
.nav-item.active{background:var(--primary);color:white}
.nav-item i{width:18px;text-align:center;font-size:14px;flex-shrink:0}
.nav-item .badge{margin-left:auto;background:var(--danger);color:white;font-size:10px;padding:2px 7px;border-radius:10px;font-weight:600}
.nav-item .badge.green{background:var(--success)}
.sidebar-footer{padding:16px;border-top:1px solid rgba(255,255,255,0.06)}
.sidebar-user{display:flex;align-items:center;gap:10px}
.user-avatar{width:34px;height:34px;background:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;color:white;font-weight:700;font-size:14px;flex-shrink:0}
.user-info strong{display:block;font-size:13px;color:white;font-weight:600}
.user-info span{font-size:11px;color:rgba(255,255,255,0.4)}

/* ── MAIN LAYOUT ── */
.main-wrapper{margin-left:var(--sidebar-width);min-height:100vh;display:flex;flex-direction:column}
.topbar{background:white;height:60px;padding:0 28px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50}
.topbar-left{display:flex;align-items:center;gap:12px}
.page-title{font-size:17px;font-weight:700;color:var(--text)}
.topbar-right{display:flex;align-items:center;gap:12px}
.topbar-btn{width:36px;height:36px;border-radius:8px;border:1px solid var(--border);background:white;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--text-muted);transition:all var(--transition);position:relative}
.topbar-btn:hover{background:var(--light);color:var(--primary)}
.topbar-btn .dot{position:absolute;top:6px;right:6px;width:7px;height:7px;background:var(--danger);border-radius:50%;border:1.5px solid white}
.main-content{padding:24px 28px;flex:1}

/* ── CARDS ── */
.card{background:white;border-radius:var(--radius-lg);border:1px solid var(--border);overflow:hidden}
.card-header{padding:18px 24px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.card-title{font-size:15px;font-weight:700;color:var(--text)}
.card-body{padding:24px}

/* ── STAT CARDS ── */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px}
.stat-card{background:white;border-radius:var(--radius-lg);padding:20px;border:1px solid var(--border);display:flex;align-items:center;gap:16px;transition:all var(--transition)}
.stat-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.stat-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.stat-icon.blue{background:#EEF2FF;color:var(--primary)}
.stat-icon.green{background:#ECFDF5;color:var(--success)}
.stat-icon.orange{background:#FFFBEB;color:var(--warning)}
.stat-icon.red{background:#FEF2F2;color:var(--danger)}
.stat-icon.purple{background:#F5F3FF;color:#7C3AED}
.stat-info strong{display:block;font-size:24px;font-weight:800;color:var(--text);line-height:1}
.stat-info span{font-size:12px;color:var(--text-muted);margin-top:4px;display:block}
.stat-trend{margin-left:auto;font-size:12px;font-weight:600;padding:3px 8px;border-radius:6px}
.stat-trend.up{background:#ECFDF5;color:var(--success)}
.stat-trend.down{background:#FEF2F2;color:var(--danger)}

/* ── BUTTONS ── */
.btn{display:inline-flex;align-items:center;gap:7px;padding:9px 18px;border-radius:8px;font-weight:600;font-size:13px;cursor:pointer;border:1.5px solid transparent;transition:all var(--transition);white-space:nowrap}
.btn-primary{background:var(--primary);color:white;border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 4px 12px rgba(0,87,255,0.3)}
.btn-success{background:var(--success);color:white;border-color:var(--success)}
.btn-success:hover{background:#059669}
.btn-warning{background:var(--warning);color:white;border-color:var(--warning)}
.btn-danger{background:var(--danger);color:white;border-color:var(--danger)}
.btn-danger:hover{background:#DC2626}
.btn-outline{background:white;color:var(--text);border-color:var(--border)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}
.btn-sm{padding:6px 14px;font-size:12px}
.btn-icon{width:34px;height:34px;padding:0;justify-content:center;border-radius:8px}

/* ── FORMS ── */
.form-group{margin-bottom:18px}
.form-label{display:block;font-size:13px;font-weight:600;color:var(--text);margin-bottom:6px}
.form-label span{color:var(--danger)}
.form-control{width:100%;padding:9px 13px;border:1.5px solid var(--border);border-radius:8px;color:var(--text);background:white;transition:border-color var(--transition)}
.form-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,87,255,0.08)}
.form-control::placeholder{color:#CBD5E1}
select.form-control{cursor:pointer}
textarea.form-control{resize:vertical;min-height:90px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-row-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}
.form-hint{font-size:11px;color:var(--text-muted);margin-top:4px}
.form-error{font-size:11px;color:var(--danger);margin-top:4px}
.input-group{display:flex}
.input-group-text{padding:9px 12px;background:var(--light);border:1.5px solid var(--border);border-right:none;border-radius:8px 0 0 8px;color:var(--text-muted);font-size:13px;white-space:nowrap}
.input-group .form-control{border-radius:0 8px 8px 0}

/* ── TABLE ── */
.table-wrap{overflow-x:auto}
table.data-table{width:100%;border-collapse:collapse}
.data-table th{background:#F8FAFF;padding:11px 16px;text-align:left;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:0.5px;color:var(--text-muted);border-bottom:1px solid var(--border);white-space:nowrap}
.data-table td{padding:13px 16px;border-bottom:1px solid #F1F5F9;font-size:13px;color:var(--text);vertical-align:middle}
.data-table tr:hover td{background:#FAFBFF}
.data-table tr:last-child td{border-bottom:none}
.action-group{display:flex;gap:6px;align-items:center}

/* ── BADGES ── */
.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:20px;font-size:11px;font-weight:600;white-space:nowrap}
.badge-blue{background:#EEF2FF;color:var(--primary)}
.badge-green{background:#ECFDF5;color:#059669}
.badge-orange{background:#FFFBEB;color:#D97706}
.badge-red{background:#FEF2F2;color:var(--danger)}
.badge-gray{background:#F1F5F9;color:#475569}
.badge-purple{background:#F5F3FF;color:#7C3AED}

/* ── ALERTS ── */
.alert{padding:12px 16px;border-radius:8px;font-size:13px;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.alert-success{background:#ECFDF5;color:#065F46;border:1px solid #A7F3D0}
.alert-danger{background:#FEF2F2;color:#991B1B;border:1px solid #FECACA}
.alert-warning{background:#FFFBEB;color:#92400E;border:1px solid #FDE68A}
.alert-info{background:#EFF6FF;color:#1E40AF;border:1px solid #BFDBFE}

/* ── INVOICE / QUOTATION PRINT ── */
.invoice-wrap{max-width:800px;margin:0 auto;background:white;padding:48px;border-radius:var(--radius-lg);border:1px solid var(--border)}
.invoice-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:40px;padding-bottom:32px;border-bottom:2px solid var(--primary)}
.invoice-company strong{font-size:22px;font-weight:800;color:var(--primary)}
.invoice-company p{font-size:13px;color:var(--text-muted);margin-top:6px;line-height:1.8}
.invoice-meta{text-align:right}
.invoice-title{font-size:28px;font-weight:900;color:var(--text);letter-spacing:-0.5px}
.invoice-number{font-size:13px;color:var(--text-muted);margin-top:6px}
.invoice-number strong{color:var(--primary)}
.invoice-parties{display:grid;grid-template-columns:1fr 1fr;gap:32px;margin-bottom:32px}
.invoice-party h4{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:var(--text-muted);margin-bottom:8px}
.invoice-party strong{display:block;font-size:15px;font-weight:700;color:var(--text)}
.invoice-party p{font-size:13px;color:var(--text-muted);line-height:1.7}
.invoice-table{width:100%;border-collapse:collapse;margin-bottom:24px}
.invoice-table th{background:#F8FAFF;padding:10px 14px;text-align:left;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:0.5px;color:var(--text-muted);border:1px solid var(--border)}
.invoice-table td{padding:12px 14px;border:1px solid var(--border);font-size:13px;vertical-align:top}
.invoice-table tr:nth-child(even) td{background:#FAFBFF}
.invoice-totals{display:flex;justify-content:flex-end}
.invoice-totals-box{width:280px}
.total-row{display:flex;justify-content:space-between;padding:8px 0;font-size:13px;border-bottom:1px solid var(--border)}
.total-row.grand{font-size:16px;font-weight:800;color:var(--primary);border-bottom:none;padding-top:12px;border-top:2px solid var(--primary)}
.invoice-footer{margin-top:40px;padding-top:24px;border-top:1px solid var(--border);text-align:center;font-size:12px;color:var(--text-muted)}
.invoice-terms{margin-top:24px;font-size:12px;color:var(--text-muted)}
.invoice-terms h5{font-weight:700;color:var(--text);margin-bottom:6px}

/* ── CUSTOMER ESTIMATE PORTAL ── */
.portal-wrap{min-height:100vh;background:linear-gradient(135deg,#0A0E1A 0%,#111827 100%);padding:40px 20px}
.portal-card{max-width:900px;margin:0 auto;background:white;border-radius:24px;overflow:hidden;box-shadow:0 32px 80px rgba(0,0,0,0.3)}
.portal-header{background:linear-gradient(135deg,var(--primary),var(--primary-dark));padding:40px;color:white;text-align:center}
.portal-header h1{font-size:28px;font-weight:800;margin-bottom:8px}
.portal-header p{opacity:0.8;font-size:15px}
.portal-body{padding:40px}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:32px}
.product-item{border:2px solid var(--border);border-radius:var(--radius);padding:16px;cursor:pointer;transition:all var(--transition);position:relative}
.product-item:hover{border-color:var(--primary);background:var(--primary-light)}
.product-item.selected{border-color:var(--primary);background:var(--primary-light)}
.product-item.selected::after{content:'✓';position:absolute;top:10px;right:10px;width:22px;height:22px;background:var(--primary);color:white;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700}
.product-item i{font-size:28px;color:var(--primary);margin-bottom:10px;display:block}
.product-item h4{font-size:14px;font-weight:700;margin-bottom:4px}
.product-item p{font-size:12px;color:var(--text-muted)}
.product-item .price{font-size:15px;font-weight:800;color:var(--primary);margin-top:8px}
.estimate-summary{background:var(--light);border-radius:var(--radius);padding:24px;margin-top:24px}

/* ── LOGIN PAGE ── */
.login-wrap{min-height:100vh;background:linear-gradient(135deg,#0A0E1A,#1a237e);display:flex;align-items:center;justify-content:center;padding:20px}
.login-card{background:white;border-radius:24px;padding:48px;width:100%;max-width:420px;box-shadow:0 32px 80px rgba(0,0,0,0.4)}
.login-logo{text-align:center;margin-bottom:32px}
.login-logo strong{font-size:24px;font-weight:800;color:var(--primary)}
.login-logo p{font-size:13px;color:var(--text-muted);margin-top:4px}

/* ── UTILITIES ── */
.flex{display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-2{gap:8px}.gap-3{gap:12px}.gap-4{gap:16px}
.mt-1{margin-top:4px}.mt-2{margin-top:8px}.mt-3{margin-top:12px}.mt-4{margin-top:16px}.mt-6{margin-top:24px}
.mb-4{margin-bottom:16px}.mb-6{margin-bottom:24px}
.text-muted{color:var(--text-muted)}.text-primary{color:var(--primary)}.text-success{color:var(--success)}.text-danger{color:var(--danger)}
.text-right{text-align:right}.text-center{text-align:center}
.font-bold{font-weight:700}.font-semibold{font-weight:600}
.w-full{width:100%}
.divider{height:1px;background:var(--border);margin:20px 0}
.empty-state{text-align:center;padding:60px 20px;color:var(--text-muted)}
.empty-state i{font-size:48px;margin-bottom:16px;display:block;opacity:0.3}
.empty-state p{font-size:15px}

/* ── RESPONSIVE ── */
@media(max-width:768px){
  .sidebar{transform:translateX(-260px)}
  .main-wrapper{margin-left:0}
  .stats-grid{grid-template-columns:1fr 1fr}
  .form-row,.form-row-3{grid-template-columns:1fr}
  .product-grid{grid-template-columns:1fr 1fr}
  .invoice-parties{grid-template-columns:1fr}
  .invoice-wrap{padding:24px}
}

/* ── PRINT STYLES ── */
@media print{
  .sidebar,.topbar,.no-print{display:none!important}
  .main-wrapper{margin-left:0}
  .invoice-wrap{border:none;box-shadow:none;padding:0}
  body{background:white}
}