/* ===============================
   PDC – Design System Global
   =============================== */

/* === Dark theme (default) === */
:root,
[data-theme="dark"] {
  --pdc-bg:         #0d1117;
  --pdc-surface:    #161b22;
  --pdc-surface2:   #21262d;
  --pdc-border:     rgba(255, 255, 255, 0.08);
  --pdc-primary:    #3b82f6;
  --pdc-success:    #22c55e;
  --pdc-danger:     #ef4444;
  --pdc-warning:    #f59e0b;
  --pdc-text:       #e6edf3;
  --pdc-muted:      #8b949e;
  --pdc-radius:     14px;
  --pdc-radius-sm:  8px;
  --pdc-shadow:     0 4px 24px rgba(0, 0, 0, 0.4);
  --pdc-transition: 0.15s ease;
  color-scheme: dark;
}

/* === Light theme === */
[data-theme="light"] {
  --pdc-bg:         #f4f6f9;
  --pdc-surface:    #ffffff;
  --pdc-surface2:   #f0f2f5;
  --pdc-border:     rgba(0, 0, 0, 0.10);
  --pdc-primary:    #2563eb;
  --pdc-success:    #16a34a;
  --pdc-danger:     #dc2626;
  --pdc-warning:    #d97706;
  --pdc-text:       #111827;
  --pdc-muted:      #6b7280;
  --pdc-radius:     14px;
  --pdc-radius-sm:  8px;
  --pdc-shadow:     0 4px 16px rgba(0, 0, 0, 0.08);
  --pdc-transition: 0.15s ease;
  color-scheme: light;
}

/* === Body === */
body {
  background-color: var(--pdc-bg);
  color: var(--pdc-text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* === Header === */
.pdc-header {
  background: var(--pdc-surface);
  border-bottom: 1px solid var(--pdc-border);
  padding: 0.8rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 1030;
}

.pdc-header-brand {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--pdc-text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  letter-spacing: -0.01em;
}
.pdc-header-brand:hover { color: var(--pdc-text); text-decoration: none; }

.pdc-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--pdc-primary);
  flex-shrink: 0;
  display: inline-block;
}

.pdc-header-version {
  font-size: 0.7rem;
  color: var(--pdc-muted);
  background: var(--pdc-surface2);
  border: 1px solid var(--pdc-border);
  border-radius: 20px;
  padding: 0.2rem 0.6rem;
  white-space: nowrap;
}

/* === Footer === */
.pdc-footer {
  background: var(--pdc-surface);
  border-top: 1px solid var(--pdc-border);
  color: var(--pdc-muted);
  text-align: center;
  padding: 0.75rem;
  font-size: 0.72rem;
}

/* === Demo mode === */
.pdc-demo-banner {
  background: #92400e;
  color: #fef3c7;
  text-align: center;
  font-size: 0.8rem;
  padding: 0.35rem 1rem;
  letter-spacing: 0.02em;
}
[data-theme="light"] .pdc-demo-banner {
  background: #fef3c7;
  color: #92400e;
  border-bottom: 1px solid #f59e0b;
}
.pdc-demo-toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(2rem);
  background: #1c1917;
  color: #fef3c7;
  border: 1px solid #f59e0b;
  border-radius: 8px;
  padding: 0.6rem 1.2rem;
  font-size: 0.85rem;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  white-space: nowrap;
}
.pdc-demo-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* === Nav Cards (index, settings) === */
.pdc-nav-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.85rem;
  padding: 1.25rem;
}

@media (min-width: 576px) {
  .pdc-nav-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 992px) {
  .pdc-nav-grid { grid-template-columns: repeat(4, 1fr); padding: 2rem; gap: 1.25rem; }
}

.pdc-nav-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1.4rem 1rem;
  border-radius: var(--pdc-radius);
  color: #fff;
  text-decoration: none;
  min-height: 110px;
  gap: 0.5rem;
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: var(--pdc-shadow);
  transition: transform var(--pdc-transition), filter var(--pdc-transition), box-shadow var(--pdc-transition);
}

.pdc-nav-card:hover {
  color: #fff;
  text-decoration: none;
  transform: translateY(-2px);
  filter: brightness(1.1);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}
.pdc-nav-card:active {
  transform: scale(0.96);
  filter: brightness(0.9);
  color: #fff;
}

.pdc-nav-card i       { font-size: 1.75rem; opacity: 0.95; }
.pdc-card-title       { font-size: 2rem; font-weight: 600; line-height: 1.3; margin: 0; }
.pdc-card-sub         { font-size: 0.7rem; opacity: 0.68; margin: 0; line-height: 1.3; }

/* === Modals === */
.modal-content {
  background-color: var(--pdc-surface);
  border: 1px solid var(--pdc-border);
  border-radius: var(--pdc-radius);
  color: var(--pdc-text);
}
.modal-header { border-bottom: 1px solid var(--pdc-border); }
.modal-footer { border-top:    1px solid var(--pdc-border); }

/* === Alerts === */
.alert {
  border-radius: var(--pdc-radius);
  border: none;
}

/* === Forms === */
.form-control,
.form-select {
  background-color: var(--pdc-surface2);
  border: 1px solid var(--pdc-border);
  color: var(--pdc-text);
  border-radius: var(--pdc-radius-sm);
}
.form-control:focus,
.form-select:focus {
  background-color: var(--pdc-surface2);
  border-color: var(--pdc-primary);
  color: var(--pdc-text);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}
.form-control::placeholder { color: var(--pdc-muted); }
textarea.form-control      { resize: vertical; }

/* === Bootstrap cards === */
.card {
  background-color: var(--pdc-surface);
  border: 1px solid var(--pdc-border);
  border-radius: var(--pdc-radius);
  color: var(--pdc-text);
}

/* === Tables === */
.table {
  --bs-table-color: var(--pdc-text);
  --bs-table-bg: transparent;
  --bs-table-border-color: var(--pdc-border);
  --bs-table-striped-bg: rgba(255,255,255,0.03);
  --bs-table-hover-bg: rgba(255,255,255,0.05);
}

/* === Buttons – min tap target on mobile === */
@media (max-width: 767.98px) {
  .btn    { min-height: 40px; }
  .btn-lg { min-height: 52px; font-size: 1rem; }
}

/* === Back link === */
.pdc-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--pdc-muted);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.5rem 0;
  transition: color var(--pdc-transition);
}
.pdc-back:hover,
.pdc-back:active { color: var(--pdc-text); text-decoration: none; }

/* === Badges === */
.badge { border-radius: 6px; }

/* === List groups === */
.list-group-item-dark {
  background-color: var(--pdc-surface2);
  border-color: var(--pdc-border);
  color: var(--pdc-text);
}
.list-group-item-light {
  background-color: var(--pdc-surface);
  border-color: var(--pdc-border);
  color: var(--pdc-text);
}

/* === Bootstrap overrides to kill hard white backgrounds === */
.list-group-item {
  background-color: var(--pdc-surface2);
  border-color: var(--pdc-border);
  color: var(--pdc-text);
}
.modal-backdrop { opacity: 0.7 !important; }
.btn-close { filter: var(--bs-btn-close-filter, invert(1)); }
[data-theme="light"] .btn-close { filter: none; }

/* Inline sub_section (used in general.php) */
.sub_section {
  background-color: var(--pdc-surface2) !important;
  border-color: var(--pdc-border) !important;
  color: var(--pdc-text) !important;
  padding: 1rem;
  margin-bottom: 1rem;
  border-radius: var(--pdc-radius-sm);
}

/* Any remaining Bootstrap light bg helpers */
.bg-light, .bg-white {
  background-color: var(--pdc-surface2) !important;
  color: var(--pdc-text) !important;
}
.text-muted { color: var(--pdc-muted) !important; }
[data-theme="light"] .text-muted { color: var(--pdc-muted) !important; }

/* Section / container default bg */
section, .container, .container-fluid {
  background-color: transparent;
}

/* Input-group addon */
.input-group-text {
  background-color: var(--pdc-surface2);
  border-color: var(--pdc-border);
  color: var(--pdc-text);
}

/* === Index hero (full-height cards) === */
.pdc-index-hero {
  display: flex;
  flex-direction: column;
  min-height: calc(100dvh - 56px); /* subtract header */
  padding: 1rem;
}

.pdc-index-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  flex: 1;
}

.pdc-index-card {
  min-height: 140px;
  font-size: 2rem;
  flex: 1;
}

.pdc-index-card i { font-size: 3rem; }

@media (min-width: 576px) {
  .pdc-index-card {
    min-height: 0;
    height: 100%;
  }
}

/* === Theme toggle button === */
.pdc-theme-toggle {
  background: none;
  border: 1px solid var(--pdc-border);
  color: var(--pdc-muted);
  border-radius: 20px;
  padding: 0.25rem 0.65rem;
  font-size: 0.8rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: color var(--pdc-transition), border-color var(--pdc-transition);
  white-space: nowrap;
}
.pdc-theme-toggle:hover {
  color: var(--pdc-text);
  border-color: var(--pdc-muted);
}