:root {
  --pc-bg: #07111d;
  --pc-bg-elevated: #0c1a2b;
  --pc-card: #0f2138;
  --pc-card-alt: #122844;
  --pc-border: #1e3a56;
  --pc-border-soft: #16283d;
  --pc-accent: #20d4e8;
  --pc-accent-dark: #14a3b3;
  --pc-text: #eaf2f8;
  --pc-text-muted: #8ba3b8;
  --pc-sidebar-width: 260px;

  --pc-status-new: #3b82f6;
  --pc-status-open: #20d4e8;
  --pc-status-waiting-customer: #f5923e;
  --pc-status-waiting-support: #a855f7;
  --pc-status-resolved: #22c55e;
  --pc-status-closed: #6b7d8f;

  --pc-priority-low: #6b7d8f;
  --pc-priority-normal: #3b82f6;
  --pc-priority-high: #f5923e;
  --pc-priority-critical: #ef4444;
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  background-color: var(--pc-bg);
  color: var(--pc-text);
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", Arial, sans-serif;
}

a {
  color: var(--pc-accent);
}

a:hover {
  color: var(--pc-accent-dark);
}

/* ---------- Brand ---------- */
.pc-logo {
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0.5px;
  text-decoration: none;
  white-space: nowrap;
}

.pc-logo .pulse {
  color: #ffffff;
}

.pc-logo .case {
  color: var(--pc-accent);
}

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

.pc-sidebar {
  width: var(--pc-sidebar-width);
  flex-shrink: 0;
  background-color: var(--pc-bg-elevated);
  border-right: 1px solid var(--pc-border-soft);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 1030;
  transition: transform 0.2s ease;
}

.pc-sidebar-header {
  padding: 1.25rem 1.25rem 1rem;
  border-bottom: 1px solid var(--pc-border-soft);
}

.pc-sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 0.75rem 0.75rem;
}

.pc-nav-link {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.6rem 0.85rem;
  border-radius: 0.5rem;
  color: var(--pc-text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  margin-bottom: 0.15rem;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.pc-nav-link:hover {
  background-color: var(--pc-card);
  color: var(--pc-text);
}

.pc-nav-link.active {
  background-color: rgba(32, 212, 232, 0.12);
  color: var(--pc-accent);
  font-weight: 600;
}

.pc-nav-link .bi {
  font-size: 1.05rem;
  width: 1.2rem;
  text-align: center;
}

.pc-nav-section-title {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--pc-text-muted);
  padding: 0.9rem 0.85rem 0.3rem;
}

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

.pc-topbar {
  background-color: var(--pc-bg-elevated);
  border-bottom: 1px solid var(--pc-border-soft);
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  position: sticky;
  top: 0;
  z-index: 1020;
}

.pc-content {
  padding: 1.75rem;
  flex: 1;
}

.pc-sidebar-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--pc-border);
  color: var(--pc-text);
  border-radius: 0.4rem;
  padding: 0.35rem 0.6rem;
}

@media (max-width: 991.98px) {
  .pc-sidebar {
    transform: translateX(-100%);
  }

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

  .pc-main {
    margin-left: 0;
  }

  .pc-sidebar-toggle {
    display: inline-flex;
    align-items: center;
  }

  .pc-content {
    padding: 1.1rem;
  }
}

.pc-sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1025;
}

.pc-sidebar-backdrop.pc-show {
  display: block;
}

/* ---------- Cards & surfaces ---------- */
.pc-card {
  background-color: var(--pc-card);
  border: 1px solid var(--pc-border-soft);
  border-radius: 0.75rem;
}

.pc-card-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--pc-border-soft);
  font-weight: 600;
}

.pc-card-body {
  padding: 1.25rem;
}

.pc-stat-card {
  background-color: var(--pc-card);
  border: 1px solid var(--pc-border-soft);
  border-radius: 0.75rem;
  padding: 1.1rem 1.25rem;
  height: 100%;
}

.pc-stat-card .pc-stat-value {
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--pc-text);
  line-height: 1.2;
}

.pc-stat-card .pc-stat-label {
  color: var(--pc-text-muted);
  font-size: 0.85rem;
  margin-top: 0.15rem;
}

.pc-stat-card.pc-stat-accent {
  border-color: rgba(32, 212, 232, 0.4);
}

.pc-stat-card.pc-stat-danger {
  border-color: rgba(239, 68, 68, 0.45);
}

/* ---------- Tables ---------- */
.pc-table-wrap {
  background-color: var(--pc-card);
  border: 1px solid var(--pc-border-soft);
  border-radius: 0.75rem;
  overflow: hidden;
}

.table {
  color: var(--pc-text);
  margin-bottom: 0;
}

.table > :not(caption) > * > * {
  background-color: transparent;
  border-bottom-color: var(--pc-border-soft);
  color: var(--pc-text);
}

.table thead th {
  color: var(--pc-text-muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom-color: var(--pc-border);
  font-weight: 600;
}

.table-hover > tbody > tr:hover > * {
  background-color: rgba(32, 212, 232, 0.06);
}

.table-row-link {
  cursor: pointer;
}

/* ---------- Forms ---------- */
.form-control,
.form-select {
  background-color: var(--pc-bg-elevated);
  border: 1px solid var(--pc-border);
  color: var(--pc-text);
}

.form-control:focus,
.form-select:focus {
  background-color: var(--pc-bg-elevated);
  border-color: var(--pc-accent);
  color: var(--pc-text);
  box-shadow: 0 0 0 0.2rem rgba(32, 212, 232, 0.2);
}

.form-control::placeholder {
  color: var(--pc-text-muted);
}

.form-control:disabled, .form-select:disabled {
  background-color: var(--pc-border-soft);
  color: var(--pc-text-muted);
}

.form-label {
  color: var(--pc-text-muted);
  font-size: 0.85rem;
  margin-bottom: 0.35rem;
}

.form-check-input {
  background-color: var(--pc-bg-elevated);
  border-color: var(--pc-border);
}

.form-check-input:checked {
  background-color: var(--pc-accent);
  border-color: var(--pc-accent);
}

.form-text {
  color: var(--pc-text-muted);
}

select.form-select option {
  background-color: var(--pc-bg-elevated);
  color: var(--pc-text);
}

/* ---------- Buttons ---------- */
.btn-accent {
  background-color: var(--pc-accent);
  border-color: var(--pc-accent);
  color: #04222a;
  font-weight: 600;
}

.btn-accent:hover {
  background-color: var(--pc-accent-dark);
  border-color: var(--pc-accent-dark);
  color: #04222a;
}

.btn-outline-accent {
  border-color: var(--pc-accent);
  color: var(--pc-accent);
  background-color: transparent;
}

.btn-outline-accent:hover {
  background-color: rgba(32, 212, 232, 0.12);
  color: var(--pc-accent);
}

.btn-ghost {
  background-color: transparent;
  border: 1px solid var(--pc-border);
  color: var(--pc-text);
}

.btn-ghost:hover {
  background-color: var(--pc-card-alt);
  color: var(--pc-text);
}

/* ---------- Badges ---------- */
.pc-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.28rem 0.65rem;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 600;
  white-space: nowrap;
  border: 1px solid transparent;
}

.pc-badge::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background-color: currentColor;
}

.badge-status-new { color: var(--pc-status-new); background-color: rgba(59, 130, 246, 0.14); border-color: rgba(59, 130, 246, 0.35); }
.badge-status-open { color: var(--pc-status-open); background-color: rgba(32, 212, 232, 0.14); border-color: rgba(32, 212, 232, 0.35); }
.badge-status-waiting-customer { color: var(--pc-status-waiting-customer); background-color: rgba(245, 146, 62, 0.14); border-color: rgba(245, 146, 62, 0.35); }
.badge-status-waiting-support { color: var(--pc-status-waiting-support); background-color: rgba(168, 85, 247, 0.14); border-color: rgba(168, 85, 247, 0.35); }
.badge-status-resolved { color: var(--pc-status-resolved); background-color: rgba(34, 197, 94, 0.14); border-color: rgba(34, 197, 94, 0.35); }
.badge-status-closed { color: var(--pc-status-closed); background-color: rgba(107, 125, 143, 0.16); border-color: rgba(107, 125, 143, 0.35); }

.badge-priority-low { color: var(--pc-priority-low); background-color: rgba(107, 125, 143, 0.16); border-color: rgba(107, 125, 143, 0.35); }
.badge-priority-normal { color: var(--pc-priority-normal); background-color: rgba(59, 130, 246, 0.14); border-color: rgba(59, 130, 246, 0.35); }
.badge-priority-high { color: var(--pc-priority-high); background-color: rgba(245, 146, 62, 0.14); border-color: rgba(245, 146, 62, 0.35); }
.badge-priority-critical {
  color: #fff;
  background-color: var(--pc-priority-critical);
  border-color: var(--pc-priority-critical);
  box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.25);
}
.badge-priority-critical::before {
  background-color: #fff;
}

.badge-sla-ontrack { color: var(--pc-accent); background-color: rgba(32, 212, 232, 0.14); border-color: rgba(32, 212, 232, 0.35); }
.badge-sla-met { color: var(--pc-status-resolved); background-color: rgba(34, 197, 94, 0.14); border-color: rgba(34, 197, 94, 0.35); }
.badge-sla-met-late { color: var(--pc-status-waiting-customer); background-color: rgba(245, 146, 62, 0.14); border-color: rgba(245, 146, 62, 0.35); }
.badge-sla-breached {
  color: #fff;
  background-color: var(--pc-priority-critical);
  border-color: var(--pc-priority-critical);
  box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.25);
}
.badge-sla-breached::before {
  background-color: #fff;
}

/* ---------- Alerts ---------- */
.alert {
  border-radius: 0.6rem;
  border: 1px solid transparent;
}

.alert-success {
  background-color: rgba(34, 197, 94, 0.12);
  border-color: rgba(34, 197, 94, 0.35);
  color: #7fe3a6;
}

.alert-danger {
  background-color: rgba(239, 68, 68, 0.12);
  border-color: rgba(239, 68, 68, 0.35);
  color: #f8a3a3;
}

.alert-info {
  background-color: rgba(32, 212, 232, 0.1);
  border-color: rgba(32, 212, 232, 0.3);
  color: var(--pc-accent);
}

/* ---------- Conversation timeline ---------- */
.pc-timeline {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.pc-msg-row {
  display: flex;
  width: 100%;
}

.pc-msg-row.pc-align-right {
  justify-content: flex-end;
}

.pc-msg-bubble {
  max-width: 70%;
  border-radius: 0.85rem;
  padding: 0.75rem 1rem;
  background-color: var(--pc-card-alt);
  border: 1px solid var(--pc-border-soft);
}

.pc-msg-row.pc-align-right .pc-msg-bubble {
  background-color: rgba(32, 212, 232, 0.14);
  border-color: rgba(32, 212, 232, 0.3);
}

.pc-msg-bubble.pc-msg-internal {
  background-color: rgba(168, 85, 247, 0.12);
  border-color: rgba(168, 85, 247, 0.35);
}

.pc-msg-meta {
  font-size: 0.76rem;
  color: var(--pc-text-muted);
  margin-bottom: 0.3rem;
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.pc-msg-text {
  white-space: pre-wrap;
  word-break: break-word;
}

.pc-msg-system {
  text-align: center;
  color: var(--pc-text-muted);
  font-size: 0.82rem;
  padding: 0.35rem 0;
}

.pc-msg-attachments {
  margin-top: 0.6rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.pc-attachment-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background-color: var(--pc-bg-elevated);
  border: 1px solid var(--pc-border);
  border-radius: 0.5rem;
  padding: 0.35rem 0.6rem;
  font-size: 0.8rem;
  text-decoration: none;
  color: var(--pc-text);
}

.pc-attachment-chip:hover {
  border-color: var(--pc-accent);
  color: var(--pc-accent);
}

.pc-attachment-thumb {
  width: 96px;
  height: 96px;
  object-fit: cover;
  border-radius: 0.5rem;
  border: 1px solid var(--pc-border);
  cursor: pointer;
}

/* ---------- File dropzone ---------- */
.pc-dropzone {
  border: 2px dashed var(--pc-border);
  border-radius: 0.75rem;
  padding: 1.5rem;
  text-align: center;
  color: var(--pc-text-muted);
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.pc-dropzone.pc-dragover {
  border-color: var(--pc-accent);
  background-color: rgba(32, 212, 232, 0.06);
  color: var(--pc-accent);
}

.pc-file-list {
  margin-top: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.pc-file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--pc-bg-elevated);
  border: 1px solid var(--pc-border);
  border-radius: 0.5rem;
  padding: 0.4rem 0.65rem;
  font-size: 0.85rem;
}

/* ---------- Login page ---------- */
.pc-login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at 15% 20%, rgba(32, 212, 232, 0.14), transparent 45%),
    radial-gradient(circle at 85% 80%, rgba(32, 212, 232, 0.08), transparent 45%),
    var(--pc-bg);
  padding: 1.5rem;
}

.pc-login-card {
  width: 100%;
  max-width: 420px;
  background-color: var(--pc-card);
  border: 1px solid var(--pc-border-soft);
  border-radius: 1rem;
  padding: 2.5rem 2.25rem;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.pc-login-logo {
  text-align: center;
  margin-bottom: 0.5rem;
  font-size: 1.75rem;
}

.pc-login-subtitle {
  text-align: center;
  color: var(--pc-text-muted);
  margin-bottom: 2rem;
  font-size: 0.9rem;
}

.pc-login-footer {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.78rem;
  color: var(--pc-text-muted);
}

/* ---------- Pagination ---------- */
.page-link {
  background-color: var(--pc-card);
  border-color: var(--pc-border-soft);
  color: var(--pc-text);
}

.page-link:hover {
  background-color: var(--pc-card-alt);
  color: var(--pc-accent);
}

.page-item.active .page-link {
  background-color: var(--pc-accent);
  border-color: var(--pc-accent);
  color: #04222a;
}

.page-item.disabled .page-link {
  background-color: var(--pc-bg-elevated);
  color: var(--pc-text-muted);
}

/* ---------- Misc ---------- */
.pc-muted {
  color: var(--pc-text-muted);
}

.pc-divider {
  border-color: var(--pc-border-soft);
}

.pc-avatar {
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  background-color: rgba(32, 212, 232, 0.15);
  color: var(--pc-accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
}

.modal-content {
  background-color: var(--pc-card);
  color: var(--pc-text);
  border: 1px solid var(--pc-border-soft);
}

.modal-header, .modal-footer {
  border-color: var(--pc-border-soft);
}

.dropdown-menu {
  background-color: var(--pc-card);
  border-color: var(--pc-border-soft);
}

.dropdown-item {
  color: var(--pc-text);
}

.dropdown-item:hover, .dropdown-item:focus {
  background-color: var(--pc-card-alt);
  color: var(--pc-accent);
}

.nav-tabs {
  border-bottom-color: var(--pc-border-soft);
}

.nav-tabs .nav-link {
  color: var(--pc-text-muted);
  border: none;
  border-bottom: 2px solid transparent;
}

.nav-tabs .nav-link.active {
  background-color: transparent;
  color: var(--pc-accent);
  border-bottom-color: var(--pc-accent);
}

.pc-empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--pc-text-muted);
}

.pc-empty-state .bi {
  font-size: 2.5rem;
  display: block;
  margin-bottom: 0.75rem;
  color: var(--pc-border);
}