:root {
  --crm-bg: #f3f5f8;
  --crm-sidebar: #1e293b;
  --crm-sidebar-text: #cbd5e1;
  --crm-accent: #0f766e;
  --crm-accent-hover: #0d9488;
  --crm-card: #ffffff;
  --crm-border: #e2e8f0;
  --crm-text: #0f172a;
  --crm-muted: #64748b;
  --sidebar-width: 260px;
}

* { box-sizing: border-box; }

body.app-body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--crm-bg);
  color: var(--crm-text);
  min-height: 100vh;
}

a { color: var(--crm-accent); text-decoration: none; }
a:hover { color: var(--crm-accent-hover); }

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

.sidebar {
  width: var(--sidebar-width);
  background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
  color: var(--crm-sidebar-text);
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 1040;
  display: flex;
  flex-direction: column;
  transition: transform .2s ease;
}

.sidebar-brand {
  padding: 1.25rem 1.25rem 1rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.sidebar-brand .brand-name {
  color: #fff;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: .02em;
}
.sidebar-brand .brand-sub {
  font-size: .75rem;
  opacity: .7;
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: .75rem 0;
}
.sidebar-nav .nav-label {
  padding: .75rem 1.25rem .25rem;
  font-size: .7rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  opacity: .5;
}
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: .65rem;
  padding: .55rem 1.25rem;
  color: var(--crm-sidebar-text);
  border-left: 3px solid transparent;
  font-size: .92rem;
}
.sidebar-nav a:hover,
.sidebar-nav a.active {
  background: rgba(15, 118, 110, .18);
  color: #fff;
  border-left-color: var(--crm-accent);
}

.main-wrap {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.topbar {
  background: var(--crm-card);
  border-bottom: 1px solid var(--crm-border);
  padding: .75rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  position: sticky;
  top: 0;
  z-index: 1020;
}
.topbar .search-box {
  flex: 1;
  max-width: 420px;
}
.topbar .search-box input {
  border-radius: 999px;
  border: 1px solid var(--crm-border);
  padding-left: 1rem;
}

.content {
  padding: 1.25rem;
}

.page-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: .75rem;
  margin-bottom: 1.25rem;
}
.page-header h1 {
  font-size: 1.45rem;
  margin: 0;
  font-weight: 700;
}
.page-header .breadcrumb {
  margin: 0;
  font-size: .85rem;
}

.stat-card {
  background: var(--crm-card);
  border: 1px solid var(--crm-border);
  border-radius: .75rem;
  padding: 1rem 1.15rem;
  height: 100%;
  box-shadow: 0 1px 2px rgba(15, 23, 42, .04);
}
.stat-card .stat-label {
  color: var(--crm-muted);
  font-size: .8rem;
  margin-bottom: .35rem;
}
.stat-card .stat-value {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0;
}
.stat-card.accent { border-top: 3px solid var(--crm-accent); }
.stat-card.warn { border-top: 3px solid #f59e0b; }
.stat-card.danger { border-top: 3px solid #ef4444; }
.stat-card.success { border-top: 3px solid #16a34a; }
.stat-card.info { border-top: 3px solid #2563eb; }

.card-panel {
  background: var(--crm-card);
  border: 1px solid var(--crm-border);
  border-radius: .75rem;
  box-shadow: 0 1px 2px rgba(15, 23, 42, .04);
  margin-bottom: 1.25rem;
}
.card-panel .card-panel-header {
  padding: .9rem 1.15rem;
  border-bottom: 1px solid var(--crm-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
}
.card-panel .card-panel-body { padding: 1.15rem; }

.table-responsive { overflow-x: auto; }
.table thead th {
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--crm-muted);
  border-bottom-width: 1px;
  white-space: nowrap;
}
.table td { vertical-align: middle; font-size: .92rem; }

.btn-accent {
  background: var(--crm-accent);
  border-color: var(--crm-accent);
  color: #fff;
}
.btn-accent:hover {
  background: var(--crm-accent-hover);
  border-color: var(--crm-accent-hover);
  color: #fff;
}

.badge.text-bg-warning { color: #7c2d12 !important; }
.filter-bar {
  background: var(--crm-card);
  border: 1px solid var(--crm-border);
  border-radius: .75rem;
  padding: 1rem;
  margin-bottom: 1rem;
}

.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at top left, rgba(15,118,110,.18), transparent 40%),
    linear-gradient(160deg, #0f172a, #1e293b 50%, #0f766e);
  padding: 1.5rem;
}
.auth-card {
  width: 100%;
  max-width: 420px;
  background: #fff;
  border-radius: 1rem;
  padding: 2rem;
  box-shadow: 0 20px 50px rgba(0,0,0,.25);
}
.auth-card h1 { font-size: 1.4rem; margin-bottom: .25rem; }
.auth-card .subtitle { color: var(--crm-muted); margin-bottom: 1.5rem; }

.nav-tabs .nav-link.active {
  color: var(--crm-accent);
  border-color: var(--crm-border) var(--crm-border) #fff;
  font-weight: 600;
}

.invoice-print {
  background: #fff;
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem;
}
.invoice-print .header-img { max-width: 100%; max-height: 120px; }
.invoice-print table { width: 100%; }

.dropzone {
  border: 2px dashed var(--crm-border);
  border-radius: .75rem;
  padding: 2rem;
  text-align: center;
  background: #f8fafc;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.dropzone.dragover {
  border-color: var(--crm-accent);
  background: rgba(15,118,110,.06);
}

.sidebar-toggle { display: none; }

@media (max-width: 991.98px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-wrap { margin-left: 0; }
  .sidebar-toggle { display: inline-flex; }
  .sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15,23,42,.45);
    z-index: 1035;
  }
  .sidebar-backdrop.show { display: block; }
}

@media print {
  .sidebar, .topbar, .no-print { display: none !important; }
  .main-wrap { margin: 0 !important; }
  .content { padding: 0 !important; }
}