/* Theme Variables */
:root,
[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: #1e293b;
  --bg-card-hover: #273549;
  --bg-input: #0f172a;
  --border-color: #334155;
  --border-focus: #3b82f6;
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --accent-blue: #3b82f6;
  --accent-blue-hover: #2563eb;
  --accent-indigo: #6366f1;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #ef4444;
  --accent-purple: #a855f7;
  --accent-cyan: #06b6d4;

  --navbar-bg: rgba(30, 41, 59, 0.8);
  --modal-bg: #1e293b;
  --table-header-bg: rgba(15, 23, 42, 0.7);
  --panel-bg: rgba(15, 23, 42, 0.5);

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-input: #ffffff;
  --border-color: #e2e8f0;
  --border-focus: #2563eb;
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  
  --accent-blue: #2563eb;
  --accent-blue-hover: #1d4ed8;
  --accent-indigo: #4f46e5;
  --accent-emerald: #059669;
  --accent-amber: #d97706;
  --accent-rose: #dc2626;
  --accent-purple: #9333ea;
  --accent-cyan: #0891b2;

  --navbar-bg: rgba(255, 255, 255, 0.9);
  --modal-bg: #ffffff;
  --table-header-bg: #f8fafc;
  --panel-bg: #f8fafc;

  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.05), 0 1px 2px -1px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.2s ease, color 0.2s ease;
}

a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: color 0.15s ease;
}
a:hover {
  color: var(--accent-blue-hover);
}

/* App Shell */
.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 260px;
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.sidebar-header {
  padding: 1.5rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-indigo));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.2rem;
  color: white;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.35);
}

.logo-text h1 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.logo-text span {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-blue);
  font-weight: 600;
}

.nav-menu {
  list-style: none;
  padding: 1.25rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.nav-item a {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.7rem 0.9rem;
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.nav-item a:hover {
  background-color: var(--bg-card-hover);
  color: var(--text-primary);
}

.nav-item.active a {
  background: linear-gradient(90deg, rgba(59, 130, 246, 0.12), rgba(99, 102, 241, 0.08));
  color: var(--accent-blue);
  font-weight: 600;
  border-left: 3px solid var(--accent-blue);
}

.nav-icon {
  font-size: 1.1rem;
  width: 20px;
  text-align: center;
}

.sidebar-footer {
  margin-top: auto;
  padding: 1.25rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.8rem;
  color: var(--text-muted);
}

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

/* Top Navbar */
.top-navbar {
  height: 64px;
  background-color: var(--navbar-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.75rem;
  position: sticky;
  top: 0;
  z-index: 40;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.search-box-form {
  position: relative;
  width: 380px;
}

.search-input {
  width: 100%;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.55rem 1rem 0.55rem 2.5rem;
  color: var(--text-primary);
  font-size: 0.88rem;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background-color 0.2s ease;
}

.search-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.search-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

/* Theme Toggle Button */
.btn-theme-toggle {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.15s ease;
}
.btn-theme-toggle:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--accent-blue);
}

/* Page Content */
.page-body {
  padding: 1.75rem;
  flex: 1;
}

/* Header Banner */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.75rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.page-subtitle {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-top: 0.2rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.55rem 1.1rem;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-blue-hover));
  color: #fff;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.3);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-blue-hover), #1d4ed8);
  color: #fff;
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--bg-secondary);
  border-color: var(--border-color);
  color: var(--text-primary);
}
.btn-secondary:hover {
  background-color: var(--bg-card-hover);
  color: var(--text-primary);
}

.btn-success {
  background-color: var(--accent-emerald);
  color: #fff;
}
.btn-success:hover {
  background-color: #047857;
}

.btn-danger {
  background-color: var(--accent-rose);
  color: #fff;
}
.btn-danger:hover {
  background-color: #b91c1c;
}

.btn-sm {
  padding: 0.35rem 0.7rem;
  font-size: 0.8rem;
}

.btn-call {
  background: rgba(16, 185, 129, 0.15);
  color: #059669;
  border: 1px solid rgba(16, 185, 129, 0.3);
}
[data-theme="dark"] .btn-call {
  color: #34d399;
}
.btn-call:hover {
  background: rgba(16, 185, 129, 0.25);
}

/* Verification Badges & Actions */
.btn-verify-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: all 0.15s ease;
}

.verify-badge-verified {
  background: rgba(16, 185, 129, 0.15);
  color: #059669;
  border: 1px solid rgba(16, 185, 129, 0.3);
}
[data-theme="dark"] .verify-badge-verified {
  color: #34d399;
}

.verify-badge-unverified {
  background: rgba(245, 158, 11, 0.12);
  color: #d97706;
  border: 1px solid rgba(245, 158, 11, 0.25);
}
[data-theme="dark"] .verify-badge-unverified {
  color: #fbbf24;
}

.btn-verify-toggle:hover {
  transform: scale(1.03);
  filter: brightness(1.1);
}

/* Cards & Grid */
.grid-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, border-color 0.15s ease, background-color 0.2s ease;
}
.stat-card:hover {
  transform: translateY(-2px);
  border-color: rgba(99, 102, 241, 0.4);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
}

.stat-icon.blue { background: rgba(59, 130, 246, 0.15); color: var(--accent-blue); }
.stat-icon.red { background: rgba(239, 68, 68, 0.15); color: var(--accent-rose); }
.stat-icon.amber { background: rgba(245, 158, 11, 0.15); color: var(--accent-amber); }
.stat-icon.green { background: rgba(16, 185, 129, 0.15); color: var(--accent-emerald); }
.stat-icon.purple { background: rgba(168, 85, 247, 0.15); color: var(--accent-purple); }
.stat-icon.cyan { background: rgba(6, 182, 212, 0.15); color: var(--accent-cyan); }

.stat-info h3 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  font-weight: 600;
}
.stat-number {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
  overflow: hidden;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.card-header {
  padding: 1.1rem 1.4rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-body {
  padding: 1.4rem;
}

/* Filters bar */
.filters-bar {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.form-select, .form-control {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 0.5rem 0.85rem;
  font-size: 0.88rem;
  outline: none;
  transition: border-color 0.15s ease, background-color 0.2s ease;
}

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

.form-group {
  margin-bottom: 1.1rem;
}
.form-label {
  display: block;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
}
.form-help {
  font-size: 0.76rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.data-table th {
  background-color: var(--table-header-bg);
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.data-table td {
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  vertical-align: middle;
}

.data-table tbody tr {
  transition: background-color 0.12s ease;
}

.data-table tbody tr:hover {
  background-color: var(--bg-card-hover);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 9999px;
  line-height: 1.2;
}

.badge-danger { background: rgba(239, 68, 68, 0.15); color: #dc2626; border: 1px solid rgba(239, 68, 68, 0.3); }
[data-theme="dark"] .badge-danger { color: #f87171; }

.badge-warning { background: rgba(245, 158, 11, 0.15); color: #d97706; border: 1px solid rgba(245, 158, 11, 0.3); }
[data-theme="dark"] .badge-warning { color: #fbbf24; }

.badge-info { background: rgba(59, 130, 246, 0.15); color: #2563eb; border: 1px solid rgba(59, 130, 246, 0.3); }
[data-theme="dark"] .badge-info { color: #60a5fa; }

.badge-success { background: rgba(16, 185, 129, 0.15); color: #059669; border: 1px solid rgba(16, 185, 129, 0.3); }
[data-theme="dark"] .badge-success { color: #34d399; }

.badge-secondary { background: rgba(100, 116, 139, 0.12); color: #475569; border: 1px solid rgba(100, 116, 139, 0.25); }
[data-theme="dark"] .badge-secondary { color: #cbd5e1; }

.badge-muted { background: rgba(100, 116, 139, 0.1); color: #64748b; border: 1px solid rgba(100, 116, 139, 0.2); }
.badge-dark { background: rgba(30, 41, 59, 0.8); color: #94a3b8; border: 1px solid rgba(71, 85, 105, 0.4); }

/* Category Tags */
.cat-badge {
  font-size: 0.72rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  background: rgba(99, 102, 241, 0.12);
  color: #4f46e5;
  border: 1px solid rgba(99, 102, 241, 0.25);
}
[data-theme="dark"] .cat-badge {
  color: #a5b4fc;
}

.cat-direct { background: rgba(59, 130, 246, 0.12); color: #2563eb; }
[data-theme="dark"] .cat-direct { color: #93c5fd; }

.cat-partner { background: rgba(168, 85, 247, 0.12); color: #9333ea; }
[data-theme="dark"] .cat-partner { color: #d8b4fe; }

.cat-si { background: rgba(6, 182, 212, 0.12); color: #0891b2; }
[data-theme="dark"] .cat-si { color: #67e8f9; }

.cat-msp { background: rgba(16, 185, 129, 0.12); color: #059669; }
[data-theme="dark"] .cat-msp { color: #6ee7b7; }

.cat-consultant { background: rgba(245, 158, 11, 0.12); color: #d97706; }
[data-theme="dark"] .cat-consultant { color: #fde68a; }

/* Company Transition Badge */
.badge-company-change {
  background: rgba(168, 85, 247, 0.12);
  color: #9333ea;
  border: 1px solid rgba(168, 85, 247, 0.3);
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
}
[data-theme="dark"] .badge-company-change {
  color: #c084fc;
}

/* Timeline Interaction Logs */
.timeline {
  position: relative;
  padding-left: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 9px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: var(--border-color);
}

.timeline-item {
  position: relative;
}

.timeline-dot {
  position: absolute;
  left: -2rem;
  top: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 2px solid var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
}

.timeline-card {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
}

.timeline-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.timeline-author {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.88rem;
}

.timeline-date {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.timeline-notes {
  font-size: 0.86rem;
  color: var(--text-secondary);
  white-space: pre-wrap;
  line-height: 1.5;
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}

.modal-overlay.active {
  display: flex;
}

.modal-content {
  background: var(--modal-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 520px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: modalFadeIn 0.2s ease;
}

@keyframes modalFadeIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}
.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Toast Messages */
.messages-container {
  margin-bottom: 1.5rem;
}

.alert {
  padding: 0.9rem 1.2rem;
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  font-size: 0.88rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.alert-success { background: rgba(16, 185, 129, 0.12); border: 1px solid rgba(16, 185, 129, 0.3); color: #059669; }
[data-theme="dark"] .alert-success { color: #34d399; }

.alert-error { background: rgba(239, 68, 68, 0.12); border: 1px solid rgba(239, 68, 68, 0.3); color: #dc2626; }
[data-theme="dark"] .alert-error { color: #f87171; }

.alert-warning { background: rgba(245, 158, 11, 0.12); border: 1px solid rgba(245, 158, 11, 0.3); color: #d97706; }
[data-theme="dark"] .alert-warning { color: #fbbf24; }

.alert-info { background: rgba(59, 130, 246, 0.12); border: 1px solid rgba(59, 130, 246, 0.3); color: #2563eb; }
[data-theme="dark"] .alert-info { color: #60a5fa; }

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.pagination-links {
  display: flex;
  gap: 0.35rem;
}

.page-btn {
  padding: 0.35rem 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
}
.page-btn.active {
  background: var(--accent-blue);
  color: #fff;
  border-color: var(--accent-blue);
}
.page-btn:hover:not(.active) {
  background: var(--bg-card-hover);
}

/* Responsive */
@media (max-width: 900px) {
  .app-container {
    flex-direction: column;
  }
  .sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }
  .nav-menu {
    flex-direction: row;
    overflow-x: auto;
    padding: 0.75rem;
  }
  .search-box-form {
    width: 180px;
  }
}