/*
  Burning Cost course site — custom theme
  Matches the main landing page palette exactly.

  Landing page palette:
    --navy:         #080b14
    --navy-mid:     #0d1121
    --navy-card:    #111828
    --navy-border:  #1c2338
    --accent:       #4f7ef8   (primary blue)
    --accent-2:     #7c5cfc   (purple)
    --text-primary: #eef0f6
    --text-secondary: #8b93ac
*/

/* === Override MkDocs Material primary palette === */
:root,
[data-md-color-scheme="default"] {
  /* Primary colour — matches landing page --accent */
  --md-primary-fg-color:          #4f7ef8;
  --md-primary-fg-color--light:   #6690f9;
  --md-primary-fg-color--dark:    #3a6af0;

  /* Accent — matches landing page --accent-2 */
  --md-accent-fg-color:           #7c5cfc;
  --md-accent-fg-color--light:    #9476fd;
  --md-accent-fg-color--dark:     #6344e8;

  /* Typeset links */
  --md-typeset-a-color:           #4f7ef8;
}

/* Dark scheme colours */
[data-md-color-scheme="slate"] {
  --md-primary-fg-color:          #4f7ef8;
  --md-primary-fg-color--light:   #6690f9;
  --md-primary-fg-color--dark:    #3a6af0;
  --md-accent-fg-color:           #7c5cfc;
  --md-typeset-a-color:           #6690f9;

  /* Match the landing page dark navy as background */
  --md-default-bg-color:          #0d1121;
  --md-default-fg-color:          #eef0f6;
  --md-default-fg-color--light:   #8b93ac;
  --md-default-fg-color--lighter: #4d5670;
  --md-default-fg-color--lightest: #1c2338;

  /* Code blocks */
  --md-code-bg-color:             #111828;
  --md-code-fg-color:             #eef0f6;
}

/* === Header === */
.md-header {
  background-color: #080b14;
  box-shadow: 0 1px 0 0 #1c2338;
}

/* Header title */
.md-header__title {
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* === Navigation tabs === */
.md-tabs {
  background-color: #0d1121;
  border-bottom: 1px solid #1c2338;
}

.md-tabs__link {
  color: #8b93ac;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.md-tabs__link--active,
.md-tabs__link:hover {
  color: #eef0f6;
}

/* Active tab underline — use the blue accent */
.md-tabs__link--active::after {
  background-color: #4f7ef8;
}

/* === Sidebar === */
.md-nav__title {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #4d5670;
}

/* === "Back to Burning Cost" breadcrumb link in header === */
.bc-back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  font-weight: 600;
  color: #8b93ac;
  text-decoration: none;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.5rem;
  border: 1px solid #1c2338;
  border-radius: 4px;
  transition: color 0.15s, border-color 0.15s;
  margin-right: 0.5rem;
}

.bc-back-link:hover {
  color: #eef0f6;
  border-color: #4f7ef8;
  text-decoration: none;
}

/* === Typography — match Inter from landing page === */
.md-typeset {
  font-size: 0.9rem;
  line-height: 1.75;
}

.md-typeset h1 {
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #eef0f6;
}

.md-typeset h2 {
  font-weight: 700;
  letter-spacing: -0.01em;
  border-bottom: 1px solid #1c2338;
  padding-bottom: 0.4rem;
}

/* Code font — matches JetBrains Mono from landing page */
.md-typeset code,
.md-typeset pre code {
  font-family: 'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular, monospace;
  font-size: 0.83rem;
}

/* === Buttons / CTAs — use landing page primary === */
.md-button {
  background-color: #4f7ef8;
  border-color: #4f7ef8;
  color: #fff;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.01em;
  transition: background-color 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.md-button:hover {
  background-color: #3a6af0;
  border-color: #3a6af0;
  color: #fff;
  box-shadow: 0 0 16px rgba(79, 126, 248, 0.35);
}

.md-button--secondary {
  background-color: transparent;
  border-color: #4f7ef8;
  color: #4f7ef8;
}

.md-button--secondary:hover {
  background-color: rgba(79, 126, 248, 0.08);
  color: #6690f9;
}

/* === Admonitions — tip/note accent colour === */
.md-typeset .admonition.tip,
.md-typeset details.tip {
  border-color: #4f7ef8;
}

.md-typeset .admonition.tip > .admonition-title,
.md-typeset details.tip > summary {
  background-color: rgba(79, 126, 248, 0.08);
}

.md-typeset .admonition.tip > .admonition-title::before,
.md-typeset details.tip > summary::before {
  color: #4f7ef8;
}

/* === Footer === */
.md-footer {
  background-color: #080b14;
  border-top: 1px solid #1c2338;
}

.md-footer-meta {
  background-color: #080b14;
}