/* ============================================================
   BUILD. OPERATE. TRANSFER. — Main Styles (SaaS variant)
   v1.0 — April 2026
   ============================================================ */

@import url('design-system-saas.css');

/* ============================================================
   PAGE HEADER BAR
   ============================================================ */

.site-header {
  background: var(--color-bg-subtle);
  border-bottom: 1px solid var(--color-border);
  padding-block: var(--sp-4);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  flex-wrap: wrap;
}

.site-header__descriptor {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-ink-muted);
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.site-header__descriptor::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--color-success);
  border-radius: 50%;
}

.site-header__meta {
  font-size: var(--text-xs);
  color: var(--color-ink-faint);
}

/* ============================================================
   HOMEPAGE LAYOUT — two-column
   ============================================================ */

.homepage-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-12);
  padding-top: var(--sp-12);
  align-items: start;
}

@media (min-width: 1024px) {
  .homepage-layout {
    grid-template-columns: minmax(0, 1fr) 320px;
  }
}

.homepage-content { max-width: 68ch; }

/* ============================================================
   HERO — structured, not flashy
   ============================================================ */

.page-hero {
  margin-bottom: var(--sp-10);
}

.page-hero__meta {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-5);
  flex-wrap: wrap;
}

.page-hero__read-time {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-ink-muted);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.page-hero__read-time::before {
  content: '·';
  color: var(--color-border-strong);
}

.page-hero h1 {
  font-size: var(--text-hero);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.08;
  color: var(--color-ink);
  margin-bottom: var(--sp-6);
}

.page-hero__lead {
  font-size: var(--text-lead);
  color: var(--color-ink-secondary);
  line-height: var(--leading-loose);
  margin-bottom: 0;
}

@media (max-width: 640px) {
  .page-hero h1 { font-size: var(--text-h1); }
}

/* ============================================================
   SECTION STRUCTURE
   ============================================================ */

.homepage-content section {
  scroll-margin-top: 80px;
}

.homepage-content h2 {
  font-size: var(--text-h2);
  font-weight: 700;
  color: var(--color-ink);
  margin-top: var(--sp-16);
  margin-bottom: var(--sp-5);
  padding-bottom: var(--sp-4);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.homepage-content h2 .section-num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--color-ink-faint);
  letter-spacing: 0;
  align-self: flex-end;
  padding-bottom: 2px;
}

/* ============================================================
   PHASE STEPS — base layout (detail in new component block)
   ============================================================ */

.phases {
  display: grid;
  gap: var(--sp-5);
  margin-block: var(--sp-8);
}

/* ============================================================
   SIDEBAR
   ============================================================ */

.homepage-sidebar { display: none; }

@media (min-width: 1024px) {
  .homepage-sidebar {
    display: block;
    position: sticky;
    top: 80px;
  }
}

.sidebar-block {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
  margin-bottom: var(--sp-5);
  background: var(--color-bg);
}

.sidebar-block__label {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-ink-muted);
  margin-bottom: var(--sp-4);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

/* Sidebar TOC */
.sidebar-toc-list {
  list-style: none;
  padding: 0;
}

.sidebar-toc-list li { margin-bottom: var(--sp-1); }

.sidebar-toc-list a {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-ink-muted);
  text-decoration: none;
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius-sm);
  transition: background 0.15s ease, color 0.15s ease;
  line-height: var(--leading-snug);
}

.sidebar-toc-list a::before {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-border-strong);
  flex-shrink: 0;
  transition: background 0.15s ease;
}

.sidebar-toc-list a:hover {
  background: var(--color-bg-subtle);
  color: var(--color-accent);
}

.sidebar-toc-list a:hover::before { background: var(--color-accent); }

/* Sidebar stats */
.sidebar-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
}

.sidebar-stat {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
  padding: var(--sp-4);
  background: var(--color-bg-subtle);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.sidebar-stat__value {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-ink);
  line-height: 1;
}

.sidebar-stat__label {
  font-size: 0.6875rem;
  color: var(--color-ink-muted);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  line-height: var(--leading-snug);
}

/* Sidebar newsletter */
.sidebar-newsletter {
  background: linear-gradient(135deg, #0F172A 0%, #1E3A5F 100%);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
  margin-bottom: var(--sp-5);
}

.sidebar-newsletter__label {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: #60A5FA;
  margin-bottom: var(--sp-3);
}

.sidebar-newsletter h3 {
  font-size: var(--text-md);
  font-weight: 700;
  color: #FFFFFF;
  margin-top: 0;
  margin-bottom: var(--sp-2);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-tight);
  font-style: normal;
}

.sidebar-newsletter p {
  font-size: var(--text-xs);
  color: #94A3B8;
  margin-bottom: var(--sp-4);
  line-height: var(--leading-body);
}

.sidebar-newsletter .newsletter-input {
  width: 100%;
  margin-bottom: var(--sp-2);
  font-size: var(--text-sm);
  padding: 0.6rem var(--sp-4);
  border-radius: var(--radius-sm);
}

.sidebar-newsletter .newsletter-btn {
  width: 100%;
  font-size: var(--text-sm);
  padding: 0.6rem var(--sp-4);
  border-radius: var(--radius-sm);
}

/* Sidebar pages list */
.sidebar-pages-list {
  list-style: none;
  padding: 0;
}

.sidebar-pages-list li { margin-bottom: var(--sp-1); }

.sidebar-pages-list a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-sm);
  color: var(--color-ink-secondary);
  text-decoration: none;
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius-sm);
  transition: background 0.15s ease, color 0.15s ease;
  gap: var(--sp-3);
}

.sidebar-pages-list a:hover {
  background: var(--color-bg-subtle);
  color: var(--color-accent);
  text-decoration: none;
}

.page-cat {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-ink-faint);
  flex-shrink: 0;
  padding: 2px 7px;
  background: var(--color-bg-muted);
  border-radius: var(--radius-pill);
}

/* ============================================================
   STAT ROW (inline in content)
   ============================================================ */

.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-4);
  margin-block: var(--sp-8);
}

.stat-item {
  padding: var(--sp-5);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
}

.stat-item__value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--color-ink);
  line-height: 1;
  display: block;
  margin-bottom: var(--sp-2);
}

.stat-item__label {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  line-height: var(--leading-snug);
}

@media (max-width: 640px) {
  .stat-row { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================================
   PHASE STRIP — hero overview
   ============================================================ */

.phase-strip {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  margin-top: var(--sp-8);
  padding: var(--sp-5) var(--sp-6);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  flex-wrap: wrap;
}

.phase-strip__item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex: 1;
  min-width: 130px;
}

.phase-strip__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-bg-muted);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-ink-muted);
  flex-shrink: 0;
}

.phase-strip__item--accent .phase-strip__icon {
  background: var(--color-accent-light);
  border-color: var(--color-accent-mid);
  color: var(--color-accent);
}

.phase-strip__label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: var(--tracking-normal);
}

.phase-strip__item--accent .phase-strip__label {
  color: var(--color-accent);
}

.phase-strip__sub {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  margin-top: 1px;
}

.phase-strip__arrow {
  color: var(--color-border-strong);
  flex-shrink: 0;
  display: none;
}

@media (min-width: 640px) {
  .phase-strip__arrow { display: block; }
}

/* ============================================================
   PHASE ITEM — enriched with icons
   ============================================================ */

.phase-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: var(--sp-5);
  align-items: start;
  padding: var(--sp-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.phase-item:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.phase-item--transfer {
  border-color: var(--color-highlight-border);
  background: var(--color-highlight);
}

.phase-item--transfer:hover {
  border-color: var(--color-success);
}

.phase-item__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-accent-light);
  border: 1px solid var(--color-accent-mid);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.phase-item--transfer .phase-item__icon {
  background: #DCFCE7;
  border-color: var(--color-highlight-border);
  color: var(--color-success);
}

.phase-item__content h3 {
  font-size: var(--text-md);
  font-weight: 700;
  color: var(--color-ink);
  margin-top: 0;
  margin-bottom: var(--sp-3);
  letter-spacing: var(--tracking-normal);
}

.phase-item__content p {
  font-size: var(--text-sm);
  color: var(--color-ink-secondary);
  margin-bottom: var(--sp-4);
  line-height: var(--leading-body);
}

.phase-checklist {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-2) var(--sp-4);
}

.phase-checklist li {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-ink-muted);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin-bottom: 0;
}

.phase-checklist li::before {
  content: '';
  display: inline-block;
  width: 14px;
  height: 14px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232563EB' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-size: contain;
  flex-shrink: 0;
}

.phase-item--transfer .phase-checklist li::before {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2316A34A' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
}

/* ============================================================
   TRANSFER GRID — what gets transferred
   ============================================================ */

.transfer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--sp-3);
  margin-block: var(--sp-8);
}

.transfer-card {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  padding: var(--sp-4) var(--sp-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  transition: border-color 0.15s ease;
}

.transfer-card:hover {
  border-color: var(--color-accent);
}

.transfer-card__icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--color-accent-light);
  border: 1px solid var(--color-accent-mid);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.transfer-card__content {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.transfer-card__title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.2;
}

.transfer-card__mech {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  line-height: var(--leading-snug);
}

/* ============================================================
   FIT GRID — when BOT makes sense
   ============================================================ */

.fit-grid {
  display: grid;
  gap: var(--sp-4);
  margin-block: var(--sp-6);
}

.fit-card {
  display: flex;
  gap: var(--sp-4);
  align-items: flex-start;
  padding: var(--sp-5) var(--sp-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  transition: border-color 0.15s ease;
}

.fit-card:hover { border-color: var(--color-accent); }

.fit-card__icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.fit-card__icon--yes {
  background: var(--color-highlight);
  border: 1px solid var(--color-highlight-border);
  color: var(--color-success);
}

.fit-card strong {
  display: block;
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: var(--sp-2);
}

.fit-card p {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  margin-bottom: 0;
  line-height: var(--leading-body);
}

/* ============================================================
   NO-FIT LIST — when BOT doesn't fit
   ============================================================ */

.nofit-list {
  display: grid;
  gap: var(--sp-3);
  margin-block: var(--sp-6);
}

.nofit-item {
  display: flex;
  gap: var(--sp-4);
  align-items: flex-start;
  padding: var(--sp-5) var(--sp-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
}

.nofit-item__icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #FEF2F2;
  border: 1px solid #FECACA;
  color: var(--color-error);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.nofit-item strong {
  display: block;
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: var(--sp-2);
}

.nofit-item p {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  margin-bottom: 0;
  line-height: var(--leading-body);
}

/* ============================================================
   RISK GRID
   ============================================================ */

.risk-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--sp-4);
  margin-block: var(--sp-6);
}

.risk-card {
  padding: var(--sp-5) var(--sp-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
}

.risk-card--high {
  border-color: #FECACA;
  background: #FFF5F5;
}

.risk-card__header {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-3);
  flex-wrap: wrap;
}

.risk-card__header strong {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-ink);
  flex: 1;
}

.risk-card__icon {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  background: #FEF2F2;
  border: 1px solid #FECACA;
  color: var(--color-error);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.risk-card p {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  margin-bottom: 0;
  line-height: var(--leading-body);
}

.risk-badge {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  background: #FEE2E2;
  color: var(--color-error);
  flex-shrink: 0;
}

.risk-badge--med {
  background: #FEF9C3;
  color: #854D0E;
}

.risk-badge--low {
  background: var(--color-highlight);
  color: var(--color-success);
}

/* ============================================================
   BREADCRUMB
   ============================================================ */

.breadcrumb {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  margin-bottom: var(--sp-6);
  display: flex;
  gap: var(--sp-2);
  flex-wrap: wrap;
  align-items: center;
}

.breadcrumb a { color: var(--color-ink-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--color-accent); text-decoration: none; }
.breadcrumb__sep { color: var(--color-border-strong); }
.breadcrumb__current { color: var(--color-ink-secondary); font-weight: 500; }

/* ============================================================
   TECHNOLOGY SECTIONS — IT delivery center positioning
   ============================================================ */

/* --- Section identity band -------------------------------- */

.section-identity {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius-sm);
  margin-top: var(--sp-16);
  margin-bottom: var(--sp-3);
}

.section-identity--enterprise {
  background: var(--color-violet-light);
  border-left: 3px solid var(--color-violet);
}

.section-identity--cloud {
  background: var(--color-sky-light);
  border-left: 3px solid var(--color-sky);
}

.section-identity--data {
  background: var(--color-teal-light);
  border-left: 3px solid var(--color-teal);
}

.section-identity--legacy {
  background: var(--color-slate-warm-light);
  border-left: 3px solid var(--color-slate-warm);
}

.section-identity__icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.section-identity--enterprise .section-identity__icon { color: #5B21B6; }
.section-identity--cloud      .section-identity__icon { color: #0369A1; }
.section-identity--data       .section-identity__icon { color: var(--color-teal-dark); }
.section-identity--legacy     .section-identity__icon { color: var(--color-slate-warm); }

.section-identity__category {
  font-size: var(--text-xs);
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.section-identity--enterprise .section-identity__category { color: #5B21B6; }
.section-identity--cloud      .section-identity__category { color: #0369A1; }
.section-identity--data       .section-identity__category { color: var(--color-teal-dark); }
.section-identity--legacy     .section-identity__category { color: var(--color-slate-warm); }

.section-identity__desc {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  margin-left: auto;
}

/* Section identity h2 inherit top margin from identity band */
.section-identity + h2,
.section-identity + section > h2:first-child {
  margin-top: 0;
  padding-bottom: var(--sp-4);
  border-bottom: 1px solid var(--color-border);
}

@media (max-width: 640px) {
  .section-identity__desc { display: none; }
  .section-identity { padding: var(--sp-2) var(--sp-3); }
}

/* --- Sidebar technology categories ----------------------- */

.sidebar-tech-categories {
  margin-bottom: var(--sp-5);
}

.sidebar-tech-cats__label {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  margin-bottom: var(--sp-3);
}

.sidebar-tech-cats__pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

/* Sidebar stat accent variant */
.sidebar-stat--accent {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.sidebar-stat--accent .sidebar-stat__value { color: white; }
.sidebar-stat--accent .sidebar-stat__label { color: rgba(255, 255, 255, 0.75); }

/* --- Section number refinement --------------------------- */

.section-num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--color-ink-faint);
  letter-spacing: 0;
  align-self: flex-end;
  padding-bottom: 2px;
  min-width: 28px;
}

/* --- Further reading section top border ------------------ */

.further-reading {
  border-top: 3px solid var(--color-ink);
}