/* ==========================================================================
   Payflow API — MkDocs Material Theme Enhancements & Polish
   High-contrast typography, dark mode visibility, diagram zoom & tab styles
   ========================================================================== */

/* --------------------------------------------------------------------------
   Light Mode Theme Variables & Typography
   -------------------------------------------------------------------------- */
[data-md-color-scheme="default"] {
  --md-primary-fg-color: #2563eb;
  --md-primary-fg-color--light: #3b82f6;
  --md-primary-fg-color--dark: #1d4ed8;
  --md-accent-fg-color: #2563eb;
  
  --md-typeset-color: #0f172a;
  --md-default-fg-color: #0f172a;
  --md-default-fg-color--light: #334155;
  --md-default-fg-color--lighter: #64748b;
  --md-default-bg-color: #ffffff;
  --md-default-bg-color--light: #f8fafc;
  
  --md-code-bg-color: #f1f5f9;
  --md-code-fg-color: #0f172a;
  
  --diagram-bg: #f8fafc;
  --diagram-border: #e2e8f0;
  --table-border: #e2e8f0;
  --table-head-bg: #f1f5f9;
  --table-even-bg: #f8fafc;
}

/* --------------------------------------------------------------------------
   Dark Mode Theme Variables & Contrast Hardening (Slate)
   -------------------------------------------------------------------------- */
[data-md-color-scheme="slate"] {
  --md-primary-fg-color: #38bdf8;
  --md-primary-fg-color--light: #7dd3fc;
  --md-primary-fg-color--dark: #0284c7;
  --md-accent-fg-color: #38bdf8;
  
  --md-typeset-color: #e2e8f0;
  --md-default-fg-color: #e2e8f0;
  --md-default-fg-color--light: #cbd5e1;
  --md-default-fg-color--lighter: #94a3b8;
  --md-default-bg-color: #0b0f19;
  --md-default-bg-color--light: #111827;
  
  --md-code-bg-color: #0f172a;
  --md-code-fg-color: #38bdf8;
  
  --diagram-bg: #0f172a;
  --diagram-border: #1e293b;
  --table-border: #1e293b;
  --table-head-bg: #1e293b;
  --table-even-bg: #111827;
}

/* --------------------------------------------------------------------------
   Headings & Text Visibility Hardening (Guaranteed Sharp Contrast)
   -------------------------------------------------------------------------- */
.md-typeset h1,
.md-typeset h2,
.md-typeset h3,
.md-typeset h4,
.md-typeset h5,
.md-typeset h6 {
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--md-default-fg-color);
}

[data-md-color-scheme="slate"] .md-typeset h1,
[data-md-color-scheme="slate"] .md-typeset h2,
[data-md-color-scheme="slate"] .md-typeset h3,
[data-md-color-scheme="slate"] .md-typeset h4 {
  color: #f8fafc !important;
}

[data-md-color-scheme="slate"] .md-typeset p,
[data-md-color-scheme="slate"] .md-typeset li,
[data-md-color-scheme="slate"] .md-typeset blockquote {
  color: #cbd5e1;
}

[data-md-color-scheme="slate"] .md-typeset strong {
  color: #f8fafc;
}

/* --------------------------------------------------------------------------
   Readability, List Typography & Content Spacing Polish
   -------------------------------------------------------------------------- */
.md-typeset {
  font-size: 0.92rem;
  line-height: 1.8;
}

.md-typeset p {
  line-height: 1.8;
  margin-bottom: 1.25rem;
}

.md-typeset ul,
.md-typeset ol {
  margin-top: 0.75rem;
  margin-bottom: 1.4rem;
  padding-left: 1.75rem;
}

.md-typeset li {
  margin-bottom: 0.6rem;
  line-height: 1.75;
}

.md-typeset li:last-child {
  margin-bottom: 0;
}

.md-typeset li > p {
  margin-top: 0.45rem;
  margin-bottom: 0.6rem;
}

.md-typeset li > ul,
.md-typeset li > ol {
  margin-top: 0.45rem;
  margin-bottom: 0.6rem;
}

.md-typeset h1 {
  margin-top: 1.5rem;
  margin-bottom: 1.5rem;
  letter-spacing: -0.025em;
}

.md-typeset h2 {
  margin-top: 2.75rem;
  margin-bottom: 1.1rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--diagram-border);
}

.md-typeset h3 {
  margin-top: 2.2rem;
  margin-bottom: 0.9rem;
}

.md-typeset h4 {
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
}

.md-typeset hr {
  margin: 2.75rem 0;
  border-bottom: 1px solid var(--diagram-border);
  opacity: 0.7;
}

/* Admonitions & Callouts Polish */
.md-typeset .admonition {
  border-radius: 8px;
  margin: 1.75rem 0;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.04), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
}

.md-typeset .admonition-title {
  font-weight: 700;
  padding: 0.65rem 1rem;
}

.md-typeset details {
  border-radius: 8px;
  border: 1px solid var(--diagram-border);
  margin: 1.5rem 0;
  background: var(--diagram-bg);
}

.md-typeset details summary {
  cursor: pointer;
  font-weight: 600;
  padding: 0.65rem 1rem;
  color: var(--md-primary-fg-color);
}

/* --------------------------------------------------------------------------
   Tables Styling & Responsive Layout
   -------------------------------------------------------------------------- */
.md-typeset table:not([class]) {
  width: 100%;
  display: table;
  border-collapse: collapse;
  border: 1px solid var(--table-border);
  border-radius: 6px;
  overflow: hidden;
  margin: 1.5rem 0;
  font-size: 0.88rem;
}

.md-typeset table:not([class]) th {
  background: var(--table-head-bg);
  color: var(--md-default-fg-color);
  font-weight: 600;
  padding: 0.85rem 1rem;
  border: 1px solid var(--table-border);
  text-align: left;
}

.md-typeset table:not([class]) td {
  padding: 0.85rem 1rem;
  border: 1px solid var(--table-border);
  line-height: 1.6;
}

.md-typeset table:not([class]) tr:nth-child(even) {
  background: var(--table-even-bg);
}

/* --------------------------------------------------------------------------
   Shields.io Badges & Header Image Elements
   -------------------------------------------------------------------------- */
.md-typeset p a img,
.md-typeset div a img {
  display: inline-block;
  margin: 2px 3px;
  vertical-align: middle;
  border-radius: 3px;
  transition: transform 0.15s ease;
}

.md-typeset p a img:hover,
.md-typeset div a img:hover {
  transform: translateY(-1px);
}

/* Center all standalone content images & architecture diagrams */
.md-typeset p > img:only-child {
  display: block;
  margin: 1.5rem auto;
  max-width: 100%;
  height: auto;
}

/* --------------------------------------------------------------------------
   Mermaid Diagrams & Interactive Zoom Controls
   -------------------------------------------------------------------------- */
.mermaid-wrapper,
.diagram-wrapper {
  position: relative;
  background: var(--diagram-bg);
  border: 1px solid var(--diagram-border);
  border-radius: 8px;
  margin: 2rem 0;
  padding: 1.5rem 1rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  overflow: hidden;
}

.mermaid-viewport,
.diagram-viewport {
  overflow: auto;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 380px;
  max-height: 680px;
  cursor: grab;
  user-select: none;
  padding: 1rem 0;
}

.mermaid-viewport:active,
.diagram-viewport:active {
  cursor: grabbing;
}

.mermaid-viewport .mermaid {
  transform-origin: center top;
  transition: transform 0.15s ease-out;
  display: flex;
  justify-content: center;
  width: 100%;
}

.mermaid-viewport .mermaid svg,
.diagram-viewport img,
.diagram-viewport svg {
  max-width: 100% !important;
  height: auto;
  transform-origin: center top;
  transition: transform 0.15s ease-out;
  display: block;
  margin: 0 auto;
}

/* Diagram Interactive Toolbar */
.diagram-controls {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  gap: 6px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  padding: 4px 8px;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 10;
  box-shadow: 0 2px 4px rgba(0,0,0,0.15);
}

.zoom-btn {
  background: transparent;
  color: #f8fafc;
  border: none;
  cursor: pointer;
  padding: 4px 8px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 4px;
  transition: background 0.15s, color 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.zoom-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #38bdf8;
}

/* Fullscreen Modal for Diagrams */
.mermaid-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(11, 15, 25, 0.95);
  backdrop-filter: blur(12px);
  z-index: 99999;
  flex-direction: column;
  box-sizing: border-box;
}

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

.mermaid-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: rgba(15, 23, 42, 0.85);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.mermaid-modal-controls {
  display: flex;
  gap: 8px;
}

.modal-zoom-btn {
  background: #1e293b;
  color: #f8fafc;
  border: 1px solid #475569;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.modal-zoom-btn:hover {
  background: #334155;
  color: #38bdf8;
}

.mermaid-modal-close {
  background: #1e293b;
  color: #f8fafc;
  border: 1px solid #475569;
  font-size: 14px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s;
}

.mermaid-modal-close:hover {
  background: #ef4444;
  color: #ffffff;
}

.mermaid-modal-viewport {
  flex: 1;
  overflow: auto;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 2rem;
}

.mermaid-modal-content {
  transform-origin: center center;
  transition: transform 0.15s ease-out;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 90vw;
  height: 80vh;
}

.mermaid-modal-content svg,
.mermaid-modal-content img {
  max-width: 95% !important;
  max-height: 80vh !important;
  height: auto;
  object-fit: contain;
}

/* --------------------------------------------------------------------------
   Content Tabs Polish
   -------------------------------------------------------------------------- */
.md-typeset .tabbed-set {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--diagram-border);
  margin: 1.5rem 0;
}

.md-typeset .tabbed-labels {
  background: var(--table-head-bg);
  border-bottom: 1px solid var(--diagram-border);
  padding: 0 0.5rem;
}

.md-typeset .tabbed-content {
  padding: 1.25rem 1.5rem;
}

/* --------------------------------------------------------------------------
   Code Block Borders & Inline Code
   -------------------------------------------------------------------------- */
.md-typeset code {
  border-radius: 4px;
  padding: 0.18em 0.45em;
  font-size: 0.86em;
}

[data-md-color-scheme="default"] .md-typeset code {
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  color: #0f172a;
}

[data-md-color-scheme="slate"] .md-typeset code {
  background: #1e293b;
  border: 1px solid #334155;
  color: #7dd3fc;
}

.highlight {
  border-radius: 8px;
  border: 1px solid var(--diagram-border);
  overflow: hidden;
  margin: 1.5rem 0;
}