/* Enterprise SaaS Design System - Business Insights Dashboard */
:root {
  --bg-main: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-sidebar: #0F172A;
  --bg-sidebar-hover: #1E293B;
  --bg-sidebar-active: #334155;
  
  --primary: #1E293B;
  --primary-hover: #0F172A;
  --primary-light: #F1F5F9;
  --accent: #2563EB;
  
  --text-main: #0F172A;
  --text-muted: #64748B;
  --text-light: #94A3B8;
  --text-on-dark: #F8FAFC;
  
  --border-color: #E2E8F0;
  --border-dark: #334155;
  
  --severity-high-bg: #FEF2F2;
  --severity-high-text: #991B1B;
  --severity-high-border: #FCA5A5;

  --severity-medium-bg: #FFFBEB;
  --severity-medium-text: #92400E;
  --severity-medium-border: #FCD34D;

  --severity-low-bg: #F0FDF4;
  --severity-low-text: #166534;
  --severity-low-border: #86EFAC;

  --status-open-bg: #FEF2F2;
  --status-open-text: #991B1B;
  
  --status-reviewed-bg: #EFF6FF;
  --status-reviewed-text: #1E40AF;

  --status-resolved-bg: #F0FDF4;
  --status-resolved-text: #166534;

  --status-dismissed-bg: #F1F5F9;
  --status-dismissed-text: #475569;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  font-size: 14px;
  min-height: 100vh;
  overflow-x: hidden;
}

/* App Layout */
#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-shell {
  display: flex;
  min-height: 100vh;
  width: 100%;
  position: relative;
}

/* Sidebar Overlay for Mobile */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(15, 23, 42, 0.5);
  z-index: 45;
  backdrop-filter: blur(2px);
}

.sidebar-overlay.active {
  display: block;
}

/* Sidebar */
.sidebar {
  width: 260px;
  background-color: var(--bg-sidebar);
  color: var(--text-on-dark);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: transform 0.3s ease;
  z-index: 50;
}

.sidebar-brand {
  padding: 18px 20px;
  font-size: 17px;
  font-weight: 700;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border-dark);
  background-color: #090D16;
}

.sidebar-logo-img {
  height: 38px;
  width: auto;
  max-width: 120px;
  object-fit: contain;
  background: #FFFFFF;
  padding: 3px 6px;
  border-radius: 6px;
}

.sidebar-brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.sidebar-brand-title {
  font-size: 16px;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: -0.3px;
}

.sidebar-brand-sub {
  font-size: 10px;
  color: #94A3B8;
  font-weight: 500;
  text-transform: uppercase;
}

.sidebar-menu {
  list-style: none;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.nav-item a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  color: #94A3B8;
  text-decoration: none;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.nav-item a:hover {
  background-color: var(--bg-sidebar-hover);
  color: #FFFFFF;
}

.nav-item.active a {
  background-color: var(--bg-sidebar-active);
  color: #FFFFFF;
  font-weight: 600;
}

.nav-item a svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  flex-shrink: 0;
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border-dark);
}

/* Main Content Layout */
.main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  background-color: var(--bg-main);
}

/* Topbar Header */
.topbar {
  height: 64px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 40;
  gap: 16px;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
  max-width: 500px;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text-main);
  border-radius: var(--radius-md);
}

.menu-toggle:hover {
  background-color: var(--primary-light);
}

.topbar-search {
  position: relative;
  width: 100%;
  max-width: 340px;
}

.topbar-search input {
  width: 100%;
  padding: 8px 12px 8px 36px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-main);
  font-size: 13px;
  outline: none;
  transition: border-color 0.2s;
}

.topbar-search input:focus {
  border-color: var(--primary);
  background-color: #FFFFFF;
}

.topbar-search svg {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  stroke: var(--text-muted);
  fill: none;
  stroke-width: 2;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.nav-bell {
  position: relative;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text-muted);
  border-radius: 50%;
  transition: background 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-bell:hover {
  background-color: var(--primary-light);
  color: var(--text-main);
}

.bell-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  background-color: #EF4444;
  color: #FFFFFF;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 10px;
  min-width: 18px;
  text-align: center;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--primary);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
  flex-shrink: 0;
}

.user-info {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-weight: 600;
  font-size: 13px;
  color: var(--text-main);
  white-space: nowrap;
}

.user-role-badge {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: capitalize;
}

.btn-logout {
  background: none;
  border: 1px solid var(--border-color);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  cursor: pointer;
  font-weight: 500;
  font-size: 13px;
  transition: all 0.2s;
  white-space: nowrap;
}

.btn-logout:hover {
  background-color: var(--severity-high-bg);
  color: var(--severity-high-text);
  border-color: var(--severity-high-border);
}

/* Page Content Body */
.page-container {
  padding: 28px 32px;
  flex: 1;
}

.page-header {
  margin-bottom: 24px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 16px;
}

.page-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.5px;
}

.page-subtitle {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Buttons & Controls */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 16px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary);
  color: #FFFFFF;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background-color: #FFFFFF;
  border-color: var(--border-color);
  color: var(--text-main);
}

.btn-secondary:hover {
  background-color: var(--primary-light);
}

.btn-danger {
  background-color: #EF4444;
  color: #FFFFFF;
}

.btn-danger:hover {
  background-color: #DC2626;
}

.btn-sm {
  padding: 5px 10px;
  font-size: 12px;
}

/* Cards & Grid Layouts */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.grid-kpi {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.kpi-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.kpi-title {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.kpi-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.2;
}

.kpi-meta {
  font-size: 12px;
  color: var(--text-muted);
}

/* Tables & Responsive Wrapper */
.table-container {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  width: 100%;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.table-toolbar {
  padding: 16px 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--border-color);
  background-color: #FFFFFF;
}

.table-filters {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  width: 100%;
}

.filter-input, .filter-select {
  padding: 7px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 13px;
  outline: none;
  background-color: #FFFFFF;
}

.filter-input:focus, .filter-select:focus {
  border-color: var(--primary);
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
  min-width: 680px;
}

table.data-table th {
  background-color: #F8FAFC;
  padding: 12px 16px;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
  user-select: none;
  white-space: nowrap;
}

table.data-table th.sortable {
  cursor: pointer;
}

table.data-table th.sortable:hover {
  color: var(--text-main);
  background-color: #F1F5F9;
}

table.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
  vertical-align: middle;
}

table.data-table tr:last-child td {
  border-bottom: none;
}

table.data-table tr:hover td {
  background-color: #F8FAFC;
}

/* Badges & Status Pills */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: capitalize;
  line-height: 1;
  white-space: nowrap;
}

.badge-high {
  background-color: var(--severity-high-bg);
  color: var(--severity-high-text);
  border: 1px solid var(--severity-high-border);
}

.badge-medium {
  background-color: var(--severity-medium-bg);
  color: var(--severity-medium-text);
  border: 1px solid var(--severity-medium-border);
}

.badge-low {
  background-color: var(--severity-low-bg);
  color: var(--severity-low-text);
  border: 1px solid var(--severity-low-border);
}

.status-open {
  background-color: var(--status-open-bg);
  color: var(--status-open-text);
}

.status-reviewed {
  background-color: var(--status-reviewed-bg);
  color: var(--status-reviewed-text);
}

.status-resolved {
  background-color: var(--status-resolved-bg);
  color: var(--status-resolved-text);
}

.status-dismissed {
  background-color: var(--status-dismissed-bg);
  color: var(--status-dismissed-text);
}

/* Modals */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(15, 23, 42, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  backdrop-filter: blur(2px);
  padding: 16px;
}

.modal-card {
  background-color: var(--bg-surface);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 620px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: modalIn 0.2s ease-out;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 18px;
  font-weight: 700;
}

.modal-close {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--text-muted);
  padding: 4px;
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  background-color: #F8FAFC;
  flex-wrap: wrap;
}

/* Forms */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 13px;
  outline: none;
  font-family: inherit;
}

.form-control:focus {
  border-color: var(--primary);
}

textarea.form-control {
  resize: vertical;
  min-height: 80px;
}

/* Login Page Styling */
.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-main);
  padding: 20px;
}

.login-card {
  width: 100%;
  max-width: 440px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: var(--shadow-md);
}

.login-brand {
  text-align: center;
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.login-logo-img {
  height: 64px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  margin-bottom: 12px;
}

.login-brand h1 {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  margin-top: 4px;
}

.login-brand p {
  color: var(--text-muted);
  font-size: 13px;
  margin-top: 4px;
}

.demo-credentials-box {
  background-color: #F1F5F9;
  border: 1px solid #CBD5E1;
  border-radius: var(--radius-md);
  padding: 14px 16px;
  margin-bottom: 20px;
  font-size: 12px;
}

.demo-credentials-box h4 {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.demo-cred-row {
  display: flex;
  justify-content: space-between;
  margin-top: 6px;
  font-family: monospace;
  padding: 4px 6px;
  border-radius: 4px;
  transition: background 0.2s;
}

.demo-cred-row:hover {
  background-color: #E2E8F0;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 200;
  max-width: calc(100vw - 48px);
}

.toast {
  background-color: var(--bg-sidebar);
  color: #FFFFFF;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: 13px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  animation: toastIn 0.3s ease-out;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Tabs */
.tabs-nav {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 20px;
  overflow-x: auto;
  white-space: nowrap;
}

.tab-btn {
  padding: 10px 16px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  font-weight: 600;
  font-size: 13px;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text-main);
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* Not Authorized State */
.unauthorized-card {
  text-align: center;
  padding: 60px 20px;
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  max-width: 500px;
  margin: 40px auto;
}

.unauthorized-card svg {
  width: 54px;
  height: 54px;
  stroke: #EF4444;
  margin-bottom: 16px;
}

.unauthorized-card h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.unauthorized-card p {
  color: var(--text-muted);
  margin-bottom: 20px;
}

/* =========================================================
   FULL RESPONSIVENESS & MOBILE LAYOUT BREAKPOINTS
   ========================================================= */

@media (max-width: 1024px) {
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    transform: translateX(-100%);
    box-shadow: var(--shadow-lg);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .topbar {
    padding: 0 16px;
  }

  .topbar-search {
    max-width: 220px;
  }

  .page-container {
    padding: 20px;
  }
}

@media (max-width: 640px) {
  .topbar-search {
    display: none; /* Hide global search on tiny screens or replace with icon toggle */
  }

  .user-info {
    display: none; /* Show avatar only on mobile topbar */
  }

  .topbar-right {
    gap: 10px;
  }

  .btn-logout {
    padding: 5px 8px;
    font-size: 12px;
  }

  .page-container {
    padding: 16px 12px;
  }

  .page-header {
    flex-direction: column;
    align-items: stretch;
  }

  .page-title {
    font-size: 20px;
  }

  .grid-kpi {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .kpi-value {
    font-size: 22px;
  }

  .table-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .table-filters {
    flex-direction: column;
    align-items: stretch;
  }

  .filter-input, .filter-select {
    width: 100% !important;
  }

  .modal-card {
    max-height: 95vh;
  }

  .modal-header, .modal-body, .modal-footer {
    padding: 16px;
  }
}