/* ============================================================
   PCSAssure Helpdesk Portal — Design System
   Paramount Computer Systems
   Supports: Light mode, Dark mode (via data-bs-theme="dark")
   ============================================================ */

/* ─── CSS Custom Properties ─────────────────────────────────── */
:root {
  /* Brand */
  --pcs-primary:         #0f6cbd;
  --pcs-primary-hover:   #0d5fa3;
  --pcs-primary-light:   #deecf9;
  --pcs-success:         #107c10;
  --pcs-danger:          #c50f1f;
  --pcs-warning:         #c97407;
  --pcs-info:            #0078d4;

  /* Surface (light) */
  --pcs-bg:              #f3f6fa;
  --pcs-surface:         #ffffff;
  --pcs-surface-subtle:  #f0f4f8;
  --pcs-border:          #d1dae6;
  --pcs-border-subtle:   #e8eef4;

  /* Text (light) */
  --pcs-text:            #1a1a2e;
  --pcs-text-muted:      #64748b;
  --pcs-text-inverse:    #ffffff;

  /* Nav */
  --pcs-nav-bg:          #ffffff;
  --pcs-nav-border:      #e2e8f0;
  --pcs-nav-text:        #334155;

  /* Card */
  --pcs-card-bg:         #ffffff;
  --pcs-card-shadow:     0 2px 16px rgba(0,0,0,0.07);
  --pcs-card-shadow-hover: 0 6px 28px rgba(15,108,189,0.12);
  --pcs-card-radius:     16px;

  /* Input */
  --pcs-input-bg:        #ffffff;
  --pcs-input-border:    #c8d5e8;
  --pcs-input-focus:     #0f6cbd;

  /* Radius & spacing */
  --pcs-radius-sm:       8px;
  --pcs-radius:          12px;
  --pcs-radius-lg:       16px;

  /* Transitions */
  --pcs-transition:      0.2s ease;
}

[data-bs-theme="dark"] {
  --pcs-bg:              #0d1117;
  --pcs-surface:         #161b22;
  --pcs-surface-subtle:  #1c2333;
  --pcs-border:          #30363d;
  --pcs-border-subtle:   #21262d;

  --pcs-text:            #e6edf3;
  --pcs-text-muted:      #8b949e;
  --pcs-text-inverse:    #0d1117;

  --pcs-nav-bg:          #161b22;
  --pcs-nav-border:      #30363d;
  --pcs-nav-text:        #c9d1d9;

  --pcs-card-bg:         #161b22;
  --pcs-card-shadow:     0 2px 16px rgba(0,0,0,0.4);
  --pcs-card-shadow-hover: 0 6px 28px rgba(15,108,189,0.2);

  --pcs-input-bg:        #0d1117;
  --pcs-input-border:    #30363d;
  --pcs-primary-light:   #1a3550;
}

/* ─── Base ───────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
}

body {
  background-color: var(--pcs-bg);
  color: var(--pcs-text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: background-color var(--pcs-transition), color var(--pcs-transition);
}

.pcs-main {
  flex: 1;
}

/* ─── Navigation ─────────────────────────────────────────────── */
.pcs-navbar {
  background-color: var(--pcs-nav-bg);
  border-bottom: 1px solid var(--pcs-nav-border);
  padding: 0.75rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: background-color var(--pcs-transition);
}

.pcs-brand-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--pcs-primary) 0%, #1e88e5 100%);
  border-radius: var(--pcs-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.pcs-brand-icon-hero {
  width: 72px;
  height: 72px;
  border-radius: 20px;
  font-size: 1.8rem;
}

.pcs-brand-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--pcs-text);
  line-height: 1.1;
}

.pcs-brand-sub {
  font-size: 0.65rem;
  color: var(--pcs-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.navbar-brand:hover { text-decoration: none; }

.nav-link {
  color: var(--pcs-nav-text) !important;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.4rem 0.75rem !important;
  border-radius: var(--pcs-radius-sm);
  transition: background-color var(--pcs-transition), color var(--pcs-transition);
}

.nav-link:hover {
  background-color: var(--pcs-surface-subtle);
  color: var(--pcs-primary) !important;
}

.pcs-user-pill {
  background-color: var(--pcs-surface-subtle);
  border: 1px solid var(--pcs-border);
  border-radius: 999px;
  padding: 0.3rem 0.85rem !important;
}

.pcs-theme-btn {
  color: var(--pcs-text-muted);
  border: 1px solid var(--pcs-border);
  background: transparent;
  border-radius: var(--pcs-radius-sm);
  padding: 0.3rem 0.6rem;
  line-height: 1;
  transition: all var(--pcs-transition);
}

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

/* ─── Page Hero ──────────────────────────────────────────────── */
.pcs-page-hero {
  background-color: var(--pcs-surface);
  border-bottom: 1px solid var(--pcs-border-subtle);
  padding: 2rem 0;
}

.pcs-hero-success {
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--pcs-success) 8%, var(--pcs-surface)),
    var(--pcs-surface)
  );
  border-bottom-color: color-mix(in srgb, var(--pcs-success) 15%, transparent);
}

.pcs-hero-danger {
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--pcs-danger) 8%, var(--pcs-surface)),
    var(--pcs-surface)
  );
}

.pcs-step-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background-color: var(--pcs-primary-light);
  color: var(--pcs-primary);
}

.pcs-step-badge-success {
  background-color: color-mix(in srgb, var(--pcs-success) 12%, transparent);
  color: var(--pcs-success);
}

/* ─── Sections ───────────────────────────────────────────────── */
.pcs-section { padding: 3rem 0; }

.pcs-section-subtle {
  background-color: var(--pcs-surface-subtle);
  border-top: 1px solid var(--pcs-border-subtle);
  padding: 2.5rem 0;
}

/* ─── Cards ──────────────────────────────────────────────────── */
.pcs-card {
  background-color: var(--pcs-card-bg);
  border: 1px solid var(--pcs-border-subtle);
  border-radius: var(--pcs-card-radius);
  padding: 2rem;
  box-shadow: var(--pcs-card-shadow);
  transition: box-shadow var(--pcs-transition), border-color var(--pcs-transition);
}

.pcs-card-hover:hover {
  box-shadow: var(--pcs-card-shadow-hover);
  border-color: var(--pcs-primary);
}

.pcs-card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--pcs-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.pcs-icon-blue   { background: var(--pcs-primary-light); color: var(--pcs-primary); }
.pcs-icon-purple { background: color-mix(in srgb, #8b5cf6 12%, transparent); color: #8b5cf6; }
.pcs-icon-green  { background: color-mix(in srgb, var(--pcs-success) 12%, transparent); color: var(--pcs-success); }

/* ─── Step Icons ─────────────────────────────────────────────── */
.pcs-step-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
}

.pcs-step-icon-xl {
  width: 96px;
  height: 96px;
  font-size: 2.5rem;
}

.pcs-step-success {
  background: color-mix(in srgb, var(--pcs-success) 12%, transparent);
  color: var(--pcs-success);
}

.pcs-step-danger {
  background: color-mix(in srgb, var(--pcs-danger) 12%, transparent);
  color: var(--pcs-danger);
}

/* ─── Buttons ────────────────────────────────────────────────── */
.btn-primary {
  background-color: var(--pcs-primary);
  border-color: var(--pcs-primary);
}

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

.pcs-btn-lg {
  padding: 0.65rem 1.5rem;
  font-weight: 600;
  border-radius: var(--pcs-radius-sm);
  font-size: 0.925rem;
}

/* ─── Inputs ─────────────────────────────────────────────────── */
.pcs-input {
  background-color: var(--pcs-input-bg);
  border: 1.5px solid var(--pcs-input-border);
  border-radius: var(--pcs-radius-sm);
  color: var(--pcs-text);
  transition: border-color var(--pcs-transition), box-shadow var(--pcs-transition);
}

.pcs-input:focus {
  border-color: var(--pcs-input-focus);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--pcs-primary) 15%, transparent);
  background-color: var(--pcs-input-bg);
  color: var(--pcs-text);
  outline: none;
}

.pcs-input-lg { padding: 0.7rem 1rem; font-size: 1rem; }

.pcs-input-readonly {
  background-color: var(--pcs-surface-subtle);
  color: var(--pcs-text-muted);
  cursor: default;
}

/* ─── Tables ─────────────────────────────────────────────────── */
.pcs-table {
  color: var(--pcs-text);
  border-color: var(--pcs-border-subtle);
}

.pcs-table thead th {
  background-color: var(--pcs-surface-subtle);
  border-color: var(--pcs-border);
  color: var(--pcs-text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.75rem 1rem;
}

.pcs-table tbody td {
  padding: 0.875rem 1rem;
  border-color: var(--pcs-border-subtle);
  vertical-align: middle;
}

.pcs-table tbody tr:hover {
  background-color: var(--pcs-surface-subtle);
}

/* ─── Modals ─────────────────────────────────────────────────── */
.pcs-modal {
  background-color: var(--pcs-card-bg);
  border: 1px solid var(--pcs-border);
  border-radius: var(--pcs-card-radius);
}

.pcs-modal .modal-header {
  border-bottom-color: var(--pcs-border-subtle);
}

.pcs-modal .modal-footer {
  border-top-color: var(--pcs-border-subtle);
}

/* ─── TAP Box ────────────────────────────────────────────────── */
.pcs-tap-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--pcs-text-muted);
}

.pcs-tap-box {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  background-color: var(--pcs-surface-subtle);
  border: 2px solid var(--pcs-border);
  border-radius: var(--pcs-radius);
  padding: 1rem 1.5rem;
  margin: 0.5rem auto;
  max-width: 360px;
}

.pcs-tap-value {
  font-family: 'Courier New', 'Cascadia Code', monospace;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--pcs-text);
  user-select: all;
}

.pcs-tap-copy-btn {
  color: var(--pcs-text-muted);
  border: none;
  background: transparent;
  font-size: 1.1rem;
  padding: 0.25rem;
  border-radius: 4px;
  transition: color var(--pcs-transition);
}

.pcs-tap-copy-btn:hover { color: var(--pcs-primary); }

/* ─── QR Code ────────────────────────────────────────────────── */
.pcs-qr-wrapper {
  position: relative;
  width: 220px;
  padding: 12px;
  background: #ffffff;
  border-radius: var(--pcs-radius);
  box-shadow: 0 2px 16px rgba(0,0,0,0.08);
}

.pcs-qr-img {
  width: 100%;
  height: auto;
  display: block;
}

.pcs-qr-corner {
  position: absolute;
  width: 20px;
  height: 20px;
  border-color: var(--pcs-primary);
  border-style: solid;
}

.pcs-qr-tl { top: 6px;  left: 6px;  border-width: 2px 0 0 2px; border-radius: 4px 0 0 0; }
.pcs-qr-tr { top: 6px;  right: 6px; border-width: 2px 2px 0 0; border-radius: 0 4px 0 0; }
.pcs-qr-bl { bottom: 6px; left: 6px;  border-width: 0 0 2px 2px; border-radius: 0 0 0 4px; }
.pcs-qr-br { bottom: 6px; right: 6px; border-width: 0 2px 2px 0; border-radius: 0 0 4px 0; }

/* ─── Info Boxes ─────────────────────────────────────────────── */
.pcs-info-box {
  background-color: var(--pcs-surface-subtle);
  border: 1px solid var(--pcs-border-subtle);
  border-radius: var(--pcs-radius-sm);
  padding: 0.875rem 1rem;
}

.pcs-info-chip {
  display: inline-block;
  padding: 0.35rem 0.875rem;
  background-color: var(--pcs-surface-subtle);
  border: 1px solid var(--pcs-border-subtle);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--pcs-text-muted);
}

/* ─── Waiting Indicator ──────────────────────────────────────── */
.pcs-waiting-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

/* ─── Pulse dot ──────────────────────────────────────────────── */
.pcs-pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  animation: pcs-pulse 1.8s ease-in-out infinite;
}

@keyframes pcs-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

/* ─── Feature list ───────────────────────────────────────────── */
.pcs-feature-list {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.pcs-feature-list li {
  padding: 0.3rem 0;
  font-size: 0.9rem;
  color: var(--pcs-text-muted);
}

/* ─── OR Divider ─────────────────────────────────────────────── */
.pcs-or-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
}

.pcs-or-divider span {
  background-color: var(--pcs-surface-subtle);
  color: var(--pcs-text-muted);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--pcs-border);
  border-radius: 999px;
}

/* ─── Success checklist ──────────────────────────────────────── */
.pcs-success-checklist {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.pcs-check-item {
  font-size: 0.9rem;
  color: var(--pcs-text);
}

/* ─── Badge items (security row) ─────────────────────────────── */
.pcs-badge-item {
  padding: 1.25rem;
  border-radius: var(--pcs-radius);
  background-color: var(--pcs-surface);
  border: 1px solid var(--pcs-border-subtle);
}

/* ─── Attempt bar ────────────────────────────────────────────── */
.pcs-attempt-bar {
  background-color: var(--pcs-surface-subtle);
  border: 1px solid var(--pcs-border-subtle);
  border-radius: var(--pcs-radius-sm);
  padding: 0.75rem;
}

/* ─── Empty state ────────────────────────────────────────────── */
.pcs-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  color: var(--pcs-text-muted);
  border: 2px dashed var(--pcs-border);
  border-radius: var(--pcs-card-radius);
}

/* ─── Link box (shareable link display) ──────────────────────── */
.pcs-link-box {
  display: flex;
  align-items: center;
  background-color: var(--pcs-surface-subtle);
  border: 1px solid var(--pcs-border);
  border-radius: var(--pcs-radius-sm);
  padding: 0.5rem 0.75rem;
  word-break: break-all;
}

.pcs-link-text {
  font-size: 0.8rem;
  font-family: monospace;
  color: var(--pcs-text-muted);
  flex: 1;
}

/* ─── Footer ─────────────────────────────────────────────────── */
.pcs-footer {
  background-color: var(--pcs-nav-bg);
  border-top: 1px solid var(--pcs-nav-border);
  font-size: 0.875rem;
  color: var(--pcs-text);
  margin-top: auto;
}

.pcs-footer-muted { color: var(--pcs-text-muted); }
.pcs-footer-sep   { color: var(--pcs-border); }

/* ─── Utility ─────────────────────────────────────────────────── */
.pcs-muted    { color: var(--pcs-text-muted); }
.pcs-link     { color: var(--pcs-primary); }
.pcs-link:hover { color: var(--pcs-primary-hover); }

/* ─── Responsive ──────────────────────────────────────────────── */
@media (max-width: 768px) {
  .pcs-card { padding: 1.5rem; }
  .pcs-tap-value { font-size: 1.2rem; }
  .pcs-qr-wrapper { width: 180px; }
  .pcs-section { padding: 2rem 0; }
}