/**
 * Customer Service Portal – Professional theme
 * Responsive, accessible, consistent UI/UX
 */

/* ========== Design tokens ========== */
:root {
  /* Primary – Indigo (trust, support) */
  --cs-primary: #4f46e5;
  --cs-primary-hover: #4338ca;
  --cs-primary-light: #e0e7ff;
  --cs-primary-dark: #312e81;

  /* Neutrals – Slate */
  --cs-bg: #f8fafc;
  --cs-surface: #ffffff;
  --cs-border: #e2e8f0;
  --cs-text: #0f172a;
  --cs-text-muted: #64748b;
  --cs-text-light: #94a3b8;

  /* Semantic */
  --cs-success: #059669;
  --cs-success-bg: #d1fae5;
  --cs-warning: #d97706;
  --cs-warning-bg: #fef3c7;
  --cs-danger: #dc2626;
  --cs-danger-bg: #fee2e2;
  --cs-info: #0284c7;
  --cs-info-bg: #e0f2fe;

  /* Elevation */
  --cs-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --cs-shadow: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --cs-shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
  --cs-radius: 12px;
  --cs-radius-sm: 8px;

  /* Nav */
  --cs-nav-height: 56px;
}

/* ========== Base ========== */
body.cs-portal {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--cs-bg);
  color: var(--cs-text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ========== Navbar ========== */
.cs-navbar {
  background: linear-gradient(135deg, var(--cs-primary) 0%, var(--cs-primary-dark) 100%);
  box-shadow: var(--cs-shadow);
  min-height: var(--cs-nav-height);
  padding: 0 1rem;
}

.cs-navbar .navbar-brand {
  font-weight: 700;
  font-size: 1.125rem;
  color: #fff !important;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.cs-navbar .navbar-brand i {
  font-size: 1.25rem;
  opacity: 0.95;
}

.cs-navbar .cs-user-menu {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.cs-navbar .cs-user-name {
  color: rgba(255,255,255,0.95);
  font-size: 0.875rem;
  font-weight: 500;
}

.cs-navbar .btn-outline-light {
  border-color: rgba(255,255,255,0.5);
  color: #fff;
  font-size: 0.875rem;
  padding: 0.375rem 0.75rem;
}

.cs-navbar .btn-outline-light:hover {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
  color: #fff;
}

@media (max-width: 576px) {
  .cs-navbar .cs-user-name { display: none; }
  .cs-navbar .navbar-brand { font-size: 1rem; }
}

/* ========== Layout ========== */
.cs-main {
  padding: 1.5rem 0;
  min-height: calc(100vh - var(--cs-nav-height));
}

.cs-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 768px) {
  .cs-main { padding: 2rem 0; }
  .cs-container { padding: 0 1.5rem; }
}

/* ========== Cards ========== */
.cs-card {
  background: var(--cs-surface);
  border-radius: var(--cs-radius);
  box-shadow: var(--cs-shadow-sm);
  border: 1px solid var(--cs-border);
  overflow: hidden;
  transition: box-shadow 0.2s;
}

.cs-card:hover {
  box-shadow: var(--cs-shadow);
}

.cs-card-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--cs-border);
  background: #fafbfc;
  font-weight: 600;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

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

@media (min-width: 768px) {
  .cs-card-header,
  .cs-card-body { padding: 1.25rem 1.5rem; }
}

/* ========== Buttons ========== */
.cs-btn-primary {
  background: var(--cs-primary);
  border-color: var(--cs-primary);
  color: #fff;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--cs-radius-sm);
  transition: background 0.2s, transform 0.05s;
}

.cs-btn-primary:hover {
  background: var(--cs-primary-hover);
  border-color: var(--cs-primary-hover);
  color: #fff;
  transform: translateY(-1px);
}

.cs-btn-primary:active { transform: translateY(0); }

.cs-btn-outline {
  border: 1.5px solid var(--cs-border);
  color: var(--cs-text);
  background: var(--cs-surface);
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--cs-radius-sm);
  transition: border-color 0.2s, background 0.2s;
}

.cs-btn-outline:hover {
  border-color: var(--cs-primary);
  color: var(--cs-primary);
  background: var(--cs-primary-light);
}

/* ========== Forms ========== */
.cs-form-label {
  font-weight: 500;
  color: var(--cs-text);
  margin-bottom: 0.375rem;
  font-size: 0.875rem;
}

.cs-form-control {
  border: 1.5px solid var(--cs-border);
  border-radius: var(--cs-radius-sm);
  padding: 0.5rem 0.75rem;
  font-size: 0.9375rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.cs-form-control:focus {
  border-color: var(--cs-primary);
  box-shadow: 0 0 0 3px var(--cs-primary-light);
  outline: none;
}

.cs-form-control::placeholder {
  color: var(--cs-text-light);
}

/* ========== Login page ========== */
.cs-login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  background: linear-gradient(160deg, var(--cs-primary) 0%, var(--cs-primary-dark) 50%, #1e1b4b 100%);
}

.cs-login-card {
  background: var(--cs-surface);
  border-radius: 16px;
  box-shadow: var(--cs-shadow-lg);
  width: 100%;
  max-width: 400px;
  padding: 2rem;
}

.cs-login-card h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--cs-text);
  margin-bottom: 0.25rem;
}

.cs-login-card .cs-login-subtitle {
  color: var(--cs-text-muted);
  font-size: 0.9375rem;
  margin-bottom: 1.5rem;
}

.cs-login-card .form-group {
  margin-bottom: 1.25rem;
}

.cs-login-card .btn-block {
  width: 100%;
  padding: 0.625rem 1rem;
  font-weight: 600;
  margin-top: 0.25rem;
}

.cs-login-footer {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--cs-border);
  text-align: center;
  font-size: 0.875rem;
  color: var(--cs-text-muted);
}

.cs-login-footer a {
  color: var(--cs-primary);
  font-weight: 500;
  text-decoration: none;
}

.cs-login-footer a:hover { text-decoration: underline; }

/* ========== Sidebar / nav cards ========== */
.cs-sidebar-card {
  background: var(--cs-surface);
  border-radius: var(--cs-radius);
  box-shadow: var(--cs-shadow-sm);
  border: 1px solid var(--cs-border);
  padding: 1rem;
  margin-bottom: 1rem;
}

.cs-sidebar-card .cs-sidebar-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--cs-text-muted);
  margin-bottom: 0.75rem;
}

.cs-nav-vertical .nav-link {
  color: var(--cs-text);
  padding: 0.5rem 0.75rem;
  border-radius: var(--cs-radius-sm);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: background 0.15s, color 0.15s;
}

.cs-nav-vertical .nav-link:hover {
  background: var(--cs-primary-light);
  color: var(--cs-primary);
}

.cs-nav-vertical .nav-link.active {
  background: var(--cs-primary-light);
  color: var(--cs-primary);
}

.cs-nav-vertical .nav-link i {
  font-size: 1.1rem;
  opacity: 0.9;
}

/* ========== Stats card ========== */
.cs-stat-card {
  background: linear-gradient(135deg, var(--cs-primary) 0%, var(--cs-primary-dark) 100%);
  color: #fff;
  border-radius: var(--cs-radius);
  padding: 1.25rem;
  border: none;
  box-shadow: var(--cs-shadow);
}

.cs-stat-card .cs-stat-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.9;
  margin-bottom: 0.75rem;
}

.cs-stat-card .cs-stat-row {
  display: flex;
  justify-content: space-between;
  padding: 0.35rem 0;
  font-size: 0.9375rem;
}

.cs-stat-card .cs-stat-row strong { font-weight: 600; }

/* ========== Ticket list items ========== */
.cs-ticket-item {
  border-left: 4px solid var(--cs-primary);
  border-radius: var(--cs-radius-sm);
  transition: border-width 0.15s, background 0.15s, transform 0.15s;
  cursor: pointer;
}

.cs-ticket-item:hover {
  border-left-width: 6px;
  background: #f8fafc;
  transform: translateX(2px);
}

/* ========== Badges ========== */
.cs-badge {
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
}

/* ========== Messages / conversation ========== */
.cs-message {
  border-radius: var(--cs-radius-sm);
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
  max-width: 85%;
}

.cs-message-customer {
  background: var(--cs-primary-light);
  margin-right: auto;
  border-bottom-right-radius: 4px;
}

.cs-message-admin {
  background: var(--cs-info-bg);
  margin-left: auto;
  border-bottom-left-radius: 4px;
}

@media (max-width: 576px) {
  .cs-message { max-width: 95%; }
}

/* ========== Onboarding ========== */
.cs-onboarding-wrap {
  min-height: 100vh;
  padding: 2rem 1rem;
  background: linear-gradient(160deg, var(--cs-primary) 0%, var(--cs-primary-dark) 50%, #1e1b4b 100%);
}

.cs-onboarding-card {
  background: var(--cs-surface);
  border-radius: 16px;
  box-shadow: var(--cs-shadow-lg);
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem;
}

.cs-step-indicator {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.cs-step {
  flex: 1;
  text-align: center;
  padding: 1rem 0.5rem;
  border-radius: var(--cs-radius);
  background: var(--cs-bg);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--cs-text-muted);
  transition: all 0.2s;
}

.cs-step.active {
  background: linear-gradient(135deg, var(--cs-primary) 0%, var(--cs-primary-dark) 100%);
  color: #fff;
}

.cs-step.completed {
  background: var(--cs-success);
  color: #fff;
}

.cs-system-card {
  border: 2px solid var(--cs-border);
  border-radius: var(--cs-radius);
  padding: 1rem 1.25rem;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, transform 0.15s;
}

.cs-system-card:hover {
  border-color: var(--cs-primary);
  background: var(--cs-primary-light);
  transform: translateY(-2px);
}

.cs-system-card.selected {
  border-color: var(--cs-primary);
  background: var(--cs-primary-light);
  color: var(--cs-primary-dark);
}

.cs-toggle-option {
  padding: 1rem 1.25rem;
  border: 2px solid var(--cs-border);
  border-radius: var(--cs-radius);
  background: var(--cs-surface);
  cursor: pointer;
  transition: all 0.2s;
}

.cs-toggle-option:hover {
  border-color: var(--cs-primary);
  background: var(--cs-primary-light);
}

.cs-toggle-option.active {
  border-color: var(--cs-primary);
  background: var(--cs-primary);
  color: #fff;
}

/* ========== Code block ========== */
.cs-code-block {
  background: #1e293b;
  color: #e2e8f0;
  padding: 1.25rem 1.5rem;
  border-radius: var(--cs-radius-sm);
  font-family: 'JetBrains Mono', 'Fira Code', ui-monospace, monospace;
  font-size: 0.8125rem;
  overflow-x: auto;
  position: relative;
}

/* ========== Alerts ========== */
.cs-alert {
  border-radius: var(--cs-radius-sm);
  padding: 1rem 1.25rem;
  border: 1px solid transparent;
}

.cs-alert-info {
  background: var(--cs-info-bg);
  color: var(--cs-info);
  border-color: rgba(2, 132, 199, 0.2);
}

.cs-alert-warning {
  background: var(--cs-warning-bg);
  color: #92400e;
  border-color: rgba(217, 119, 6, 0.2);
}

.cs-alert-danger {
  background: var(--cs-danger-bg);
  color: var(--cs-danger);
  border-color: rgba(220, 38, 38, 0.2);
}

/* ========== Status timeline (track tickets) ========== */
.status-timeline {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

/* ========== Utilities ========== */
.cs-text-muted { color: var(--cs-text-muted); }
.cs-page-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--cs-text);
  margin-bottom: 0.5rem;
}

@media (min-width: 768px) {
  .cs-page-title { font-size: 1.5rem; }
}