/* Enterprise Data Architecture - Custom Theme
   Matches sunilprakash.com design language:
   Ma (negative space), Kanso (simplicity), Shibui (subtle refinement) */

/* ---- Fonts ---- */
@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

/* ---- Color Palette ---- */
:root,
[data-md-color-scheme="default"] {
  --md-primary-fg-color: #1a1a1a;
  --md-primary-fg-color--light: #6b6b6b;
  --md-primary-fg-color--dark: #111;
  --md-primary-bg-color: #fafaf8;
  --md-primary-bg-color--light: #fff;
  --md-accent-fg-color: #1a1a1a;
  --md-default-bg-color: #fafaf8;
  --md-default-fg-color: #1a1a1a;
  --md-default-fg-color--light: #6b6b6b;
  --md-default-fg-color--lighter: #999;
  --md-default-fg-color--lightest: #e8e8e8;
  --md-typeset-color: #1a1a1a;
  --md-code-bg-color: #f5f5f3;
  --md-code-fg-color: #1a1a1a;
  --md-footer-bg-color: #1a1a1a;
  --md-footer-fg-color: rgba(255, 255, 255, 0.7);
  --md-footer-fg-color--light: rgba(255, 255, 255, 0.5);
  --md-footer-fg-color--lighter: rgba(255, 255, 255, 0.3);
}

[data-md-color-scheme="slate"] {
  --md-default-bg-color: #141413;
  --md-default-fg-color: rgba(255, 255, 255, 0.87);
  --md-default-fg-color--light: rgba(255, 255, 255, 0.6);
  --md-default-fg-color--lighter: rgba(255, 255, 255, 0.4);
  --md-default-fg-color--lightest: rgba(255, 255, 255, 0.1);
  --md-primary-fg-color: #fafaf8;
  --md-primary-bg-color: #1a1a1a;
  --md-accent-fg-color: rgba(255, 255, 255, 0.87);
  --md-code-bg-color: #1e1e1c;
  --md-code-fg-color: rgba(255, 255, 255, 0.87);
  --md-typeset-color: rgba(255, 255, 255, 0.87);
  --md-footer-bg-color: #111;
}

/* ---- Typography ---- */
:root {
  --md-text-font: "IBM Plex Sans", -apple-system, "Segoe UI", sans-serif;
  --md-code-font: "IBM Plex Mono", "SF Mono", monospace;
}

.md-typeset {
  font-size: 16px;
  line-height: 1.8;
  color: var(--md-typeset-color);
}

.md-typeset h1 {
  font-family: "Fraunces", Georgia, serif;
  font-weight: 500;
  font-size: clamp(26px, 3.5vw, 36px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  margin-bottom: 1.5rem;
  color: var(--md-typeset-color);
}

.md-typeset h2 {
  font-family: "Fraunces", Georgia, serif;
  font-weight: 500;
  font-size: clamp(20px, 2.5vw, 26px);
  line-height: 1.25;
  letter-spacing: -0.005em;
  margin-top: 3rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
}

.md-typeset h3 {
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 600;
  font-size: 18px;
  line-height: 1.35;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.md-typeset h4 {
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 600;
  font-size: 16px;
  line-height: 1.4;
  margin-top: 1.5rem;
}

/* ---- Header / Navigation ---- */
.md-header {
  background-color: var(--md-primary-fg-color);
  box-shadow: none;
}

.md-header[data-md-state="shadow"] {
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.07);
}

.md-tabs {
  background-color: var(--md-primary-fg-color);
}

.md-tabs__link {
  font-size: 13px;
  letter-spacing: 0.02em;
  opacity: 0.7;
}

.md-tabs__link--active,
.md-tabs__link:hover {
  opacity: 1;
}

/* ---- Content Area ---- */
.md-main__inner {
  margin-top: 0;
}

.md-content {
  max-width: 900px;
}

.md-content__inner {
  padding-top: 2.5rem;
  padding-bottom: 4rem;
}

/* Hero diagrams break out of content column for full width */
.md-typeset figure {
  max-width: none;
  margin-left: -2rem;
  margin-right: -2rem;
  width: calc(100% + 4rem);
}

.md-typeset figure img {
  width: 100%;
  height: auto;
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 4px;
  background: #fff;
  padding: 1rem;
}

.md-typeset figcaption {
  text-align: center;
  font-size: 13px;
  color: var(--md-default-fg-color--light);
  margin-top: 0.75rem;
  font-style: italic;
}

@media (min-width: 1440px) {
  .md-typeset figure {
    margin-left: -4rem;
    margin-right: -4rem;
    width: calc(100% + 8rem);
  }
}

/* ---- Sidebar Navigation ---- */
.md-sidebar {
  padding-top: 1.5rem;
}

.md-nav__link {
  font-size: 13px;
  color: var(--md-default-fg-color--light);
}

.md-nav__link--active,
.md-nav__link:hover {
  color: var(--md-default-fg-color);
}

.md-nav__item--active > .md-nav__link {
  font-weight: 500;
  color: var(--md-default-fg-color);
}

/* ---- Tables ---- */
.md-typeset table:not([class]) {
  font-size: 14px;
  border: 1px solid var(--md-default-fg-color--lightest);
  border-collapse: collapse;
}

.md-typeset table:not([class]) th {
  background-color: var(--md-code-bg-color);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 12px 16px;
  border-bottom: 2px solid var(--md-default-fg-color--lightest);
}

.md-typeset table:not([class]) td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
  vertical-align: top;
}

.md-typeset table:not([class]) tr:last-child td {
  border-bottom: none;
}

/* ---- Lists ---- */
.md-typeset ul li,
.md-typeset ol li {
  margin-bottom: 0.4em;
}

/* ---- Blockquotes ---- */
.md-typeset blockquote {
  border-left: 2px solid var(--md-default-fg-color);
  padding-left: 1.25rem;
  color: var(--md-default-fg-color--light);
  font-style: normal;
}

/* ---- Code ---- */
.md-typeset code {
  font-size: 13px;
  padding: 2px 6px;
  border-radius: 3px;
  background-color: var(--md-code-bg-color);
  border: 1px solid var(--md-default-fg-color--lightest);
}

.md-typeset pre {
  border-radius: 4px;
  border: 1px solid var(--md-default-fg-color--lightest);
}

.md-typeset pre code {
  border: none;
  font-size: 13px;
  line-height: 1.6;
}

/* ---- Horizontal Rules ---- */
.md-typeset hr {
  border: none;
  border-top: 1px solid var(--md-default-fg-color--lightest);
  margin: 3rem 0;
}

/* ---- Admonitions ---- */
.md-typeset .admonition,
.md-typeset details {
  border: 1px solid var(--md-default-fg-color--lightest);
  border-left: 3px solid var(--md-default-fg-color);
  border-radius: 4px;
  box-shadow: none;
  background: var(--md-default-bg-color);
}

/* ---- Footer ---- */
.md-footer {
  border-top: 1px solid var(--md-default-fg-color--lightest);
}

.md-footer-meta {
  background-color: var(--md-footer-bg-color);
}

/* ---- Mermaid Diagrams ---- */
.mermaid {
  margin: 2rem 0;
  padding: 1.5rem;
  background: var(--md-default-bg-color);
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 4px;
}

/* ---- Executive Summary Styling ---- */
/* First ul after h2 "Executive Summary" gets special treatment */
.md-typeset h2#executive-summary + ul {
  background: var(--md-code-bg-color);
  border-left: 3px solid var(--md-default-fg-color);
  padding: 20px 24px 20px 32px;
  border-radius: 0 4px 4px 0;
  list-style: none;
  margin: 1.5rem 0 2rem;
}

.md-typeset h2#executive-summary + ul li {
  padding: 4px 0;
  position: relative;
  padding-left: 0;
}

.md-typeset h2#executive-summary + ul li::before {
  content: none;
}

/* ---- Search ---- */
.md-search__input {
  background-color: rgba(255, 255, 255, 0.08);
  font-family: var(--md-text-font);
}

/* ---- Proof Strip ---- */
.proof-strip {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--md-default-fg-color--light);
  border-top: 1px solid var(--md-default-fg-color--lightest);
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
  padding: 10px 0;
  margin: 1.5rem 0;
  text-align: center;
}

/* ---- Smooth Transitions ---- */
a,
.md-nav__link,
.md-tabs__link {
  transition: color 0.2s ease, opacity 0.2s ease, border-color 0.2s ease;
}

/* ---- Diagram Viewer Modal ---- */
.diagram-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.92);
}

.diagram-modal--open {
  display: flex;
  flex-direction: column;
}

.diagram-modal__toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: #1a1a1a;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  flex-shrink: 0;
}

.diagram-modal__title {
  font-size: 14px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  font-family: var(--md-text-font);
}

.diagram-modal__controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.diagram-modal__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  background: transparent;
  color: rgba(255, 255, 255, 0.7);
  cursor: pointer;
  transition: all 0.2s ease;
}

.diagram-modal__btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
}

.diagram-modal__close {
  width: 40px;
  height: 40px;
  margin-left: 12px;
}

.diagram-modal__zoom-level {
  font-size: 12px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.5);
  min-width: 44px;
  text-align: center;
  font-family: var(--md-code-font);
}

.diagram-modal__viewer {
  flex: 1;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: grab;
  position: relative;
}

.diagram-modal__img {
  max-width: 95%;
  max-height: 90%;
  transform-origin: center center;
  transition: transform 0.1s ease;
  user-select: none;
  -webkit-user-drag: none;
  background: #fff;
  border-radius: 6px;
  padding: 16px;
}

/* Expand hint on figures */
.diagram-expand-hint {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: rgba(26, 26, 26, 0.85);
  color: rgba(255, 255, 255, 0.8);
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.02em;
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
  font-family: var(--md-text-font);
}

.md-typeset figure:hover .diagram-expand-hint {
  opacity: 1;
}

.md-typeset figure:hover img[src$=".svg"] {
  border-color: var(--md-default-fg-color--light);
}

/* ---- Print ---- */
@media print {
  .md-typeset {
    font-size: 14px;
    line-height: 1.6;
  }

  .md-typeset h1 {
    font-size: 28px;
  }

  .md-typeset h2 {
    font-size: 22px;
  }
}