/* ============================================================
   Cleveland-Cliffs Brand Tokens on Material Design
   Only override: colors, fonts, brand-specific components
   Let Material handle: layout, elevation, spacing, components
   ============================================================ */

/* --- Font Loading (Google Fonts — Montserrat + Lora) --- */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;700&family=Lora:wght@400;700&family=JetBrains+Mono:wght@400&display=swap');

/* --- Brand Color Tokens → Material CSS Variables --- */
:root,
[data-md-color-scheme="default"] {
  --md-primary-fg-color:              #003478;
  --md-primary-fg-color--light:       #005596;
  --md-primary-fg-color--dark:        #002255;
  --md-primary-bg-color:              #FFFFFF;
  --md-primary-bg-color--light:       #FFFFFF;
  --md-accent-fg-color:               #6A7F10;
  --md-accent-fg-color--transparent:  #6A7F1020;
  --md-default-fg-color:              #333333;
  --md-default-fg-color--light:       #333333b3;
  --md-default-fg-color--lighter:     #33333366;
  --md-default-fg-color--lightest:    #33333322;
  --md-text-font: 'Montserrat', Inter, Arial, sans-serif;
  --md-code-font: 'JetBrains Mono', monospace;
  --md-typeset-a-color:               #003478;
  --md-admonition-fg-color:           #333333;
}

[data-md-color-scheme="slate"] {
  --md-primary-fg-color:   #003478;
  --md-accent-fg-color:    #6A7F10;
  --md-default-bg-color:   #1a1a2e;
  --md-default-bg-color--light: #22223a;
}

/* --- Typography Tuning (brand tracking + weight, Material handles scale) --- */
.md-typeset h1 { font-weight: 500; letter-spacing: -0.04em; }
.md-typeset h2 { font-weight: 500; letter-spacing: -0.02em; margin-top: 2.2em; }
.md-typeset h3 { font-weight: 500; letter-spacing: -0.01em; margin-top: 1.8em; }
.md-typeset p,
.md-typeset li { line-height: 1.65; }

/* --- Reading measure: cap content width for long-form --- */
.md-grid { max-width: 76rem; }
.md-content__inner { max-width: 46rem; margin: 0 auto; padding-top: 1.2rem; }

/* Wide blocks break out of the measure cap */
.md-content__inner > .grid.cards,
.md-content__inner > .hero-section,
.md-content__inner > table,
.md-content__inner > .admonition,
.md-content__inner > details,
.md-typeset > .grid.cards,
.md-typeset > .hero-section {
  max-width: 56rem;
}

/* Chapter eyebrow (small tracked label above H1) */
.chapter-eyebrow {
  font-family: var(--md-code-font);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--md-primary-fg-color);
  margin: 0 0 0.6rem;
  opacity: 0.85;
}
.chapter-eyebrow + h1 { margin-top: 0; }

/* --- Header: white with Royal accent strip on top --- */
.md-header {
  background: #FFFFFF;
  color: var(--md-default-fg-color);
  box-shadow: 0 1px 0 rgba(35, 32, 32, 0.08);
  border-top: 3px solid #003478;
}
.md-header[data-md-state="shadow"] {
  box-shadow: 0 1px 0 rgba(35, 32, 32, 0.08), 0 4px 16px rgba(35, 32, 32, 0.04);
}
/* Hide the site title TEXT but keep the flex spacer so search + icons stay right-aligned */
.md-header__title { color: transparent; }
.md-header__title .md-header__topic,
.md-header__title .md-ellipsis { display: none; }
.md-header .md-icon svg,
.md-header__button { color: var(--md-default-fg-color); }

/* Logo: keep blue variant, sits on white — no hover bubble, nuclear override */
.md-header__button.md-logo img { height: 0.85rem; width: auto; }
a.md-header__button.md-logo,
a.md-header__button.md-logo:hover,
a.md-header__button.md-logo:focus,
a.md-header__button.md-logo:focus-visible,
a.md-header__button.md-logo:active {
  background: transparent !important;
  background-color: transparent !important;
  box-shadow: none !important;
  outline: none !important;
  border-radius: 0 !important;
  transition: opacity 0.15s;
}
a.md-header__button.md-logo::before,
a.md-header__button.md-logo::after {
  content: none !important;
  display: none !important;
  background: transparent !important;
}
a.md-header__button.md-logo:hover {
  opacity: 0.75;
}

/* Partner logo (Implementation Engineers) — sits next to Vooban, hairline divider */
.md-header__partner-divider {
  display: inline-block;
  width: 1px;
  height: 1.3rem;
  background: rgba(35, 32, 32, 0.15);
  margin: 0 0.7rem;
  vertical-align: middle;
}
.md-header__partner {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  vertical-align: middle;
  padding: 0.4rem 0;
}
.md-header__partner img {
  height: 1.5rem;
  width: auto;
  display: block;
}
@media screen and (max-width: 60em) {
  .md-header__partner-divider,
  .md-header__partner { display: none; }
}

/* Tabs row — white, Royal underline on active */
.md-tabs {
  background: #FFFFFF;
  color: var(--md-default-fg-color);
  border-bottom: 1px solid rgba(35, 32, 32, 0.08);
  box-shadow: none;
}
.md-tabs__link {
  color: var(--md-default-fg-color--light);
  opacity: 1;
  font-weight: 400;
  font-size: 0.78rem;
  border-bottom: 2px solid transparent;
  margin-top: 1rem;
  padding-bottom: 0.35rem;
  transition: color 0.15s, border-color 0.15s;
}
.md-tabs__link--active {
  color: var(--md-primary-fg-color);
  font-weight: 500;
  border-bottom-color: var(--md-primary-fg-color);
}
.md-tabs__link:hover {
  color: var(--md-primary-fg-color);
}

/* Search on white header — clean input with subtle grey fill */
[data-md-color-scheme="default"] .md-search__input {
  background: #F4F5F7;
  color: var(--md-default-fg-color);
  transition: background 0.15s, box-shadow 0.15s;
}
[data-md-color-scheme="default"] .md-search__input::placeholder {
  color: var(--md-default-fg-color--lighter);
}
[data-md-color-scheme="default"] .md-search__input:hover {
  background: #EEF0F4;
}
[data-md-color-scheme="default"] .md-search__icon {
  color: var(--md-default-fg-color--light);
}
[data-md-toggle="search"]:checked ~ .md-header .md-search__input {
  background: #FFFFFF;
  box-shadow: 0 0 0 1px rgba(20, 88, 228, 0.25);
}

/* ==============================================================
   SIDEBAR — minimal, trust Material, brand only what matters
   Goal: light grey bg, no AI-giveaway accents, clean hierarchy
   ============================================================== */

/* Sidebar: solid soft grey */
.md-sidebar--primary {
  background: #F6F7F9;
}
.md-sidebar--primary .md-sidebar__scrollwrap {
  background: #F6F7F9;
  margin: 0;
  box-sizing: border-box;
  border-right: 1px solid rgba(35, 32, 32, 0.06);
}
.md-sidebar--primary .md-sidebar__inner {
  padding: 0;
}
.md-sidebar--primary .md-nav--primary,
.md-sidebar--primary .md-nav--primary > .md-nav__list {
  margin-top: 0;
  padding-top: 0;
}
/* Drawer title (site_name) — hidden; the active section name serves as sidebar header */
.md-nav--primary > .md-nav__title[for="__drawer"] {
  display: none;
  height: 0;
  padding: 0;
  margin: 0;
}

/* Section title (active tab root, e.g., "Main Report") — bigger, bolder, no built-in border */
.md-sidebar--primary .md-nav--lifted > .md-nav__list > .md-nav__item--active > .md-nav__container > .md-nav__link,
.md-sidebar--primary .md-nav--lifted > .md-nav__list > .md-nav__item--active > .md-nav__link {
  font-size: 1.02rem !important;
  font-weight: 700 !important;
  color: var(--md-default-fg-color) !important;
  padding: 8px 12px 10px !important;
  margin: 0 4px 6px !important;
  letter-spacing: -0.01em;
  border: none !important;
  position: relative;
}

/* Single divider between section title and its children — via ::before on the nested nav */
.md-sidebar--primary .md-nav--lifted > .md-nav__list > .md-nav__item--active > .md-nav[data-md-level="1"] {
  position: relative;
  padding-top: 6px;
}
.md-sidebar--primary .md-nav--lifted > .md-nav__list > .md-nav__item--active > .md-nav[data-md-level="1"]::before {
  content: '';
  display: block;
  height: 1px;
  margin: 0 16px 8px;
  background: rgba(35, 32, 32, 0.1);
}

/* Nuclear: kill every border + shadow on nested nav elements */
.md-sidebar--primary .md-nav--lifted .md-nav,
.md-sidebar--primary .md-nav--lifted .md-nav__list,
.md-sidebar--primary .md-nav--lifted .md-nav__item,
.md-sidebar--primary .md-nav--lifted .md-nav__title,
.md-sidebar--primary .md-nav--lifted .md-nav__container,
.md-sidebar--primary .md-nav--lifted .md-nav__link {
  border: none !important;
  box-shadow: none !important;
}

/* Counter for Main Report chapters */
.md-sidebar--primary .md-nav--lifted > .md-nav__list > .md-nav__item--active .md-nav[data-md-level="1"] > .md-nav__list {
  counter-reset: chapter;
}
.md-sidebar--primary .md-nav--lifted > .md-nav__list > .md-nav__item--active .md-nav[data-md-level="1"] > .md-nav__list > .md-nav__item > .md-nav__link {
  counter-increment: chapter;
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.md-sidebar--primary .md-nav--lifted > .md-nav__list > .md-nav__item--active .md-nav[data-md-level="1"] > .md-nav__list > .md-nav__item > .md-nav__link::before {
  content: counter(chapter, decimal-leading-zero);
  font-family: var(--md-code-font);
  font-size: 0.62rem;
  font-weight: 400;
  color: var(--md-default-fg-color--lighter);
  letter-spacing: 0.06em;
  min-width: 1.4em;
  flex-shrink: 0;
}

/* All nav links — breathing room + micro-interactions */
.md-sidebar--primary .md-nav__link {
  padding: 9px 12px;
  border-radius: 5px;
  margin: 1px 4px;
  font-size: 0.78rem;
  transition: background 0.15s ease, color 0.15s ease, transform 0.15s ease, padding 0.15s ease;
  position: relative;
}

/* Hover — warm neutral tint + subtle right shift */
.md-sidebar--primary .md-nav__link:hover {
  background: rgba(35, 32, 32, 0.04);
  color: var(--md-default-fg-color);
  padding-left: 14px;
}

/* Selected — Royal text, tint bg, bold */
.md-sidebar--primary .md-nav__link--active,
.md-sidebar--primary .md-nav__item--active > .md-nav__link--active {
  background: rgba(20, 88, 228, 0.06) !important;
  color: var(--md-primary-fg-color) !important;
  font-weight: 600 !important;
}

/* Hide all label toggles in sidebar nav (duplicates the <a> link) + chevron icons */
.md-sidebar--primary .md-nav__icon,
.md-sidebar--primary label.md-nav__link {
  display: none !important;
}

/* Hide the duplicate section title inside the lifted active nav
   (the active tab's root link already shows the section name at the top) */
.md-sidebar--primary .md-nav--lifted .md-nav__item--active > .md-nav > .md-nav__title {
  display: none !important;
}

/* Kill Material's white pill on the active section's root link (lifted-nav halo) */
.md-sidebar--primary .md-nav--lifted .md-nav__item--active > .md-nav__link,
.md-sidebar--primary .md-nav--lifted .md-nav__item--active > .md-nav__container,
.md-sidebar--primary .md-nav--lifted .md-nav__item--active > .md-nav__container > .md-nav__link {
  background: transparent !important;
  box-shadow: none !important;
}

/* Section titles — lose the white bg + shadow that creates the halo */
.md-sidebar--primary .md-nav__title {
  background: transparent !important;
  box-shadow: none !important;
}

/* Soft hover: Royal text, no bg pill */
.md-nav__link:hover {
  color: var(--md-primary-fg-color);
}

/* Secondary (TOC) — transparent, minimal */
.md-sidebar--secondary,
.md-sidebar--secondary .md-sidebar__scrollwrap,
.md-sidebar--secondary .md-nav,
.md-sidebar--secondary .md-nav__list { background: transparent; }
.md-sidebar--secondary .md-nav__link { margin: 0; padding: 3px 8px; }
.md-sidebar--secondary .md-nav__title {
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--md-default-fg-color--light);
  font-weight: 500;
  padding-bottom: 0.4rem;
}

/* --- Confidential Chip (fixed lower-right, doesn't collide with header) --- */
.confidential-chip {
  position: fixed;
  bottom: 14px;
  right: 16px;
  z-index: 5;
  font-family: var(--md-code-font);
  font-size: 0.58rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #232020;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(35, 32, 32, 0.1);
  backdrop-filter: saturate(180%) blur(8px);
  -webkit-backdrop-filter: saturate(180%) blur(8px);
  padding: 5px 10px 5px 22px;
  border-radius: 999px;
  box-shadow: 0 1px 2px rgba(35, 32, 32, 0.04), 0 4px 12px rgba(35, 32, 32, 0.06);
  pointer-events: none;
}
.confidential-chip::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 50%;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #DC2626;
  transform: translateY(-50%);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.15);
}

[data-md-color-scheme="slate"] .confidential-chip {
  color: #ffffffcc;
  background: rgba(30, 30, 46, 0.9);
  border-color: rgba(255, 255, 255, 0.12);
}

/* --- Footer: Royal background --- */
.md-footer { background: #003478; }
.md-footer-meta { background: #002255; }
.md-footer__link { color: #FFFFFFcc; }
.md-footer__link:hover { color: #FFFFFF; }

/* Prev/Next nav — editorial, generous */
.md-footer__inner {
  padding: 1.5rem 0.8rem;
  gap: 1rem;
}
.md-footer__link {
  border-radius: 6px;
  padding: 0.8rem 1rem;
  transition: background 0.15s;
  flex: 1;
  max-width: 48%;
}
.md-footer__link:hover {
  background: rgba(255, 255, 255, 0.08);
}
.md-footer__direction {
  font-family: var(--md-code-font);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #6A7F10;
  opacity: 1;
  margin-bottom: 0.2rem;
}
.md-footer__title {
  font-size: 0.95rem;
  font-weight: 500;
  color: #FFFFFF;
}
.md-footer__link--prev .md-footer__title { padding-left: 0.5rem; }
.md-footer__link--next .md-footer__title { padding-right: 0.5rem; }
.md-footer__button.md-icon {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  padding: 0.4rem;
  transition: background 0.15s, transform 0.15s;
}
.md-footer__link:hover .md-footer__button.md-icon {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.05);
}

/* --- Admonitions: semantic variants with left accent --- */
:root {
  --md-admonition-icon--info: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M13 9h-2V7h2m0 10h-2v-6h2m-1-9A10 10 0 0 0 2 12a10 10 0 0 0 10 10 10 10 0 0 0 10-10A10 10 0 0 0 12 2Z"/></svg>');
}

.md-typeset .admonition,
.md-typeset details {
  border-radius: 6px;
  font-size: 0.85rem;
  border: 1px solid rgba(35, 32, 32, 0.08);
  border-left-width: 3px;
  box-shadow: none;
  background: #FFFFFF;
}

.md-typeset .admonition > .admonition-title,
.md-typeset details > summary {
  font-weight: 500;
  padding-top: 0.6rem;
  padding-bottom: 0.6rem;
}

/* Info / Note — Royal blue */
.md-typeset .admonition.info,
.md-typeset .admonition.note,
.md-typeset details.info,
.md-typeset details.note {
  border-left-color: #003478;
  background: #F2F6FE;
}
.md-typeset .info > .admonition-title,
.md-typeset .note > .admonition-title,
.md-typeset details.info > summary,
.md-typeset details.note > summary { background: transparent; color: #002255; }
.md-typeset .info > .admonition-title::before,
.md-typeset .note > .admonition-title::before { background-color: #003478; }

/* Warning — amber */
.md-typeset .admonition.warning,
.md-typeset .admonition.caution,
.md-typeset details.warning {
  border-left-color: #D97706;
  background: #FEF6EC;
}
.md-typeset .warning > .admonition-title,
.md-typeset .caution > .admonition-title,
.md-typeset details.warning > summary { background: transparent; color: #92400E; }
.md-typeset .warning > .admonition-title::before,
.md-typeset .caution > .admonition-title::before { background-color: #D97706; }

/* Success / Tip — green */
.md-typeset .admonition.success,
.md-typeset .admonition.tip,
.md-typeset details.success,
.md-typeset details.tip {
  border-left-color: #059669;
  background: #ECFDF5;
}
.md-typeset .success > .admonition-title,
.md-typeset .tip > .admonition-title,
.md-typeset details.success > summary,
.md-typeset details.tip > summary { background: transparent; color: #065F46; }
.md-typeset .success > .admonition-title::before,
.md-typeset .tip > .admonition-title::before { background-color: #059669; }

/* Danger / Failure — red */
.md-typeset .admonition.danger,
.md-typeset .admonition.failure,
.md-typeset .admonition.error,
.md-typeset details.danger {
  border-left-color: #DC2626;
  background: #FEF2F2;
}
.md-typeset .danger > .admonition-title,
.md-typeset .failure > .admonition-title,
.md-typeset .error > .admonition-title,
.md-typeset details.danger > summary { background: transparent; color: #991B1B; }
.md-typeset .danger > .admonition-title::before,
.md-typeset .failure > .admonition-title::before,
.md-typeset .error > .admonition-title::before { background-color: #DC2626; }

/* Quote / Abstract — neutral grey */
.md-typeset .admonition.quote,
.md-typeset .admonition.abstract,
.md-typeset .admonition.example {
  border-left-color: #6B7280;
  background: #F6F7F9;
}
.md-typeset .quote > .admonition-title,
.md-typeset .abstract > .admonition-title,
.md-typeset .example > .admonition-title { background: transparent; color: #374151; }
.md-typeset .quote > .admonition-title::before,
.md-typeset .abstract > .admonition-title::before,
.md-typeset .example > .admonition-title::before { background-color: #6B7280; }

/* --- Tables: editorial, zebra striping, generous rhythm --- */
.md-typeset table:not([class]) {
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid rgba(35, 32, 32, 0.1);
  font-size: 0.78rem;
}
.md-typeset table:not([class]) th {
  background: #EEF0F4;
  color: var(--md-default-fg-color);
  font-weight: 500;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid rgba(35, 32, 32, 0.12);
  min-width: 0;
  vertical-align: bottom;
}
.md-typeset table:not([class]) td {
  padding: 0.75rem 1rem;
  border-top: 1px solid rgba(35, 32, 32, 0.06);
  vertical-align: top;
}
.md-typeset table:not([class]) tbody tr:nth-child(even) > td {
  background: #FAFBFC;
}
.md-typeset table:not([class]) tbody tr:hover > td {
  background: #F2F6FE;
}

/* --- Blockquotes: brand left-border --- */
.md-typeset blockquote {
  border-left-color: #00347830;
}

/* --- Grid cards: use Material's grid with brand touch --- */
.md-typeset .grid.cards > ul > li {
  border: 1px solid rgba(35, 32, 32, 0.08);
  border-radius: 6px;
  background: #FFFFFF;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.md-typeset .grid.cards > ul > li:hover {
  border-color: rgba(20, 88, 228, 0.3);
  box-shadow: 0 2px 12px rgba(20, 88, 228, 0.08);
}

/* --- Home Page Hero --- */
.hero-section {
  background: linear-gradient(135deg, #003478 0%, #005596 100%);
  margin: -1rem -0.8rem 2rem -0.8rem;
  padding: 72px 48px;
  border-radius: 4px;
  position: relative;
}

.hero-section > * { position: relative; z-index: 1; }

.hero-section h1 {
  color: #FFFFFF !important;
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 500;
  letter-spacing: -0.04em;
  margin: 0 0 8px 0;
  line-height: 1.05;
}

.hero-section .subtitle {
  color: #FFFFFFcc;
  font-size: clamp(14px, 1.6vw, 17px);
  font-weight: 400;
  margin: 0;
  max-width: 560px;
  line-height: 1.5;
}

.hero-section .hero-logo {
  height: 36px;
  margin-bottom: 24px;
  filter: brightness(0) invert(1);
  opacity: 0.9;
}

.hero-section .eyebrow {
  font-family: var(--md-code-font);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #6A7F10;
  margin-bottom: 16px;
}

/* --- Status badges --- */
.badge-active,
.badge-launched,
.badge-sequenced,
.badge-planned {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  font-family: var(--md-code-font);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 4px;
  line-height: 1.6;
  white-space: nowrap;
}
.badge-active::before,
.badge-launched::before,
.badge-sequenced::before,
.badge-planned::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  display: inline-block;
}

/* Active — in flight, POV/pilot running */
.badge-active { background: #E8F0FE; color: #002255; }
.badge-active::before { background: #003478; box-shadow: 0 0 0 3px #00347820; }

/* Launched — live in production */
.badge-launched { background: #ECFDF5; color: #065F46; }
.badge-launched::before { background: #059669; }

/* Sequenced — charter in queue, next up */
.badge-sequenced { background: #F3F4F6; color: #374151; }
.badge-sequenced::before { background: #6B7280; }

/* Planned — further horizon */
.badge-planned { background: #FEF6EC; color: #92400E; }
.badge-planned::before { background: #D97706; }