/* ============================================================
   dataocean.css — DataOcean by BizFirstAi
   DataOcean-specific component styles with do- prefix.
   Depends on b-index.css (base design system).
   ============================================================ */

/* ── DataOcean Navbar Logo ────────────────────────────────── */
.do-navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--b-space-3);
  text-decoration: none;
  flex-shrink: 0;
}

.do-logo-icon {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.do-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.do-logo-wordmark {
  font-size: var(--b-font-size-lg);
  font-weight: var(--b-font-weight-bold);
  color: var(--b-text-primary);
  letter-spacing: -0.01em;
}

.do-logo-byline {
  font-size: var(--b-font-size-xs);
  color: var(--b-text-muted);
  font-weight: var(--b-font-weight-normal);
  margin-top: 2px;
}

/* ── Footer logo ──────────────────────────────────────────── */
.do-footer-logo {
  display: flex;
  align-items: center;
  gap: var(--b-space-3);
  margin-bottom: var(--b-space-4);
}

.do-footer-logo-text {
  font-size: var(--b-font-size-xl);
  font-weight: var(--b-font-weight-bold);
  color: var(--b-text-primary);
}

/* ── Hero ─────────────────────────────────────────────────── */
.do-hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background: var(--b-bg-base);
  overflow: hidden;
}

.do-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(22, 163, 74, 0.12) 0%, transparent 65%),
    radial-gradient(ellipse 50% 40% at 80% 50%, rgba(34, 197, 94, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse 40% 30% at 10% 70%, rgba(59, 130, 246, 0.05) 0%, transparent 60%);
  pointer-events: none;
}

.do-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to bottom, transparent, var(--b-bg-base));
  pointer-events: none;
}

.do-hero__inner {
  position: relative;
  z-index: 2;
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--b-space-32) var(--b-space-8) var(--b-space-20);
  text-align: center;
}

.do-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--b-space-2);
  padding: var(--b-space-1) var(--b-space-4);
  border-radius: var(--b-radius-full);
  background: var(--b-badge-bg);
  border: 1px solid var(--b-badge-border);
  color: var(--b-badge-text);
  font-size: var(--b-font-size-xs);
  font-weight: var(--b-font-weight-semibold);
  letter-spacing: var(--b-letter-spacing-wide);
  text-transform: uppercase;
  margin-bottom: var(--b-space-8);
}

.do-hero__headline {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: var(--b-font-weight-black);
  color: var(--b-text-primary);
  letter-spacing: var(--b-letter-spacing-tight);
  line-height: var(--b-line-height-tight);
  margin-bottom: var(--b-space-8);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.do-hero__headline em {
  font-style: normal;
  background: linear-gradient(135deg, var(--b-color-primary), var(--b-color-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.do-hero__subheadline {
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  color: var(--b-text-secondary);
  line-height: var(--b-line-height-relaxed);
  max-width: 700px;
  margin: 0 auto var(--b-space-12);
}

.do-hero__ctas {
  display: flex;
  gap: var(--b-space-6);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--b-space-16);
}

.do-hero__trust {
  font-size: var(--b-font-size-sm);
  color: var(--b-text-muted);
}

/* ── Stats Bar ────────────────────────────────────────────── */
.do-stats-bar {
  background: var(--b-bg-raised);
  border-top: 1px solid var(--b-border-subtle);
  border-bottom: 1px solid var(--b-border-subtle);
  padding: var(--b-space-8) 0;
}

.do-stats-bar__inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--b-space-8);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
}

.do-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--b-space-4) var(--b-space-8);
  min-width: 140px;
}

.do-stat__number {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: var(--b-font-weight-black);
  color: var(--b-color-primary-light);
  line-height: 1;
  letter-spacing: var(--b-letter-spacing-tight);
}

.do-stat__label {
  font-size: var(--b-font-size-xs);
  color: var(--b-text-muted);
  font-weight: var(--b-font-weight-medium);
  letter-spacing: var(--b-letter-spacing-wide);
  text-transform: uppercase;
  margin-top: var(--b-space-2);
  text-align: center;
}

.do-stat__divider {
  width: 1px;
  height: 40px;
  background: var(--b-border-subtle);
  flex-shrink: 0;
}

/* ── Domain Grid ──────────────────────────────────────────── */
.do-domains-section {
  padding: var(--b-space-6) 0 0;
}

.do-domains-intro {
  text-align: center;
  color: var(--b-text-secondary);
  font-size: var(--b-font-size-md);
  line-height: var(--b-line-height-relaxed);
  max-width: 700px;
  margin: 0 auto var(--b-space-16);
}

.do-domain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--b-space-6);
}

.do-domain-card {
  background: var(--b-card-bg);
  border: 1px solid var(--b-card-border);
  border-radius: var(--b-radius-xl);
  padding: var(--b-space-6);
  transition: border-color var(--b-transition-normal), box-shadow var(--b-transition-normal), transform var(--b-transition-normal);
  position: relative;
}

.do-domain-card:hover {
  border-color: var(--b-color-primary);
  box-shadow: var(--b-card-shadow-hover);
  transform: translateY(-2px);
}

.do-domain-card--more {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--b-bg-surface);
  border-style: dashed;
}

.do-domain-card--more p {
  color: var(--b-text-muted);
  font-size: var(--b-font-size-sm);
  line-height: var(--b-line-height-relaxed);
}

.do-domain-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--b-space-3);
  margin-bottom: var(--b-space-4);
}

.do-domain-card__name {
  font-size: var(--b-font-size-md);
  font-weight: var(--b-font-weight-semibold);
  color: var(--b-text-primary);
  line-height: var(--b-line-height-tight);
}

.do-domain-card__count {
  display: inline-flex;
  align-items: center;
  padding: var(--b-space-1) var(--b-space-3);
  background: var(--b-badge-bg);
  border: 1px solid var(--b-badge-border);
  border-radius: var(--b-radius-full);
  font-size: var(--b-font-size-xs);
  font-weight: var(--b-font-weight-bold);
  color: var(--b-badge-text);
  white-space: nowrap;
  flex-shrink: 0;
}

.do-domain-card__tables {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--b-space-2);
}

.do-domain-card__tables li {
  font-size: var(--b-font-size-sm);
  color: var(--b-text-muted);
  padding-left: var(--b-space-4);
  position: relative;
}

.do-domain-card__tables li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--b-color-primary);
  opacity: 0.5;
}

/* ── Standard Pattern Section ─────────────────────────────── */
.do-table-pattern {
  background: var(--b-bg-raised);
  border: 1px solid var(--b-border-default);
  border-radius: var(--b-radius-xl);
  overflow: hidden;
  max-width: 900px;
  margin: 0 auto;
}

.do-table-pattern__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--b-space-4) var(--b-space-6);
  background: var(--b-bg-surface);
  border-bottom: 1px solid var(--b-border-subtle);
}

.do-table-pattern__title {
  font-size: var(--b-font-size-sm);
  font-weight: var(--b-font-weight-semibold);
  color: var(--b-text-muted);
  letter-spacing: var(--b-letter-spacing-wide);
  text-transform: uppercase;
}

.do-table-pattern__badge {
  font-size: var(--b-font-size-xs);
  color: var(--b-color-primary-light);
  background: var(--b-badge-bg);
  border: 1px solid var(--b-badge-border);
  padding: 2px var(--b-space-3);
  border-radius: var(--b-radius-full);
  font-weight: var(--b-font-weight-medium);
}

.do-pattern-fields {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--b-border-subtle);
}

.do-pattern-field {
  background: var(--b-bg-raised);
  padding: var(--b-space-5) var(--b-space-6);
  display: flex;
  flex-direction: column;
  gap: var(--b-space-2);
}

.do-pattern-field__name {
  font-family: var(--b-font-family-mono);
  font-size: var(--b-font-size-sm);
  font-weight: var(--b-font-weight-semibold);
  color: var(--b-color-primary-light);
}

.do-pattern-field__type {
  font-family: var(--b-font-family-mono);
  font-size: var(--b-font-size-xs);
  color: var(--b-text-muted);
}

.do-pattern-field__desc {
  font-size: var(--b-font-size-sm);
  color: var(--b-text-secondary);
  line-height: var(--b-line-height-normal);
}

.do-pattern-message {
  text-align: center;
  margin-top: var(--b-space-12);
  font-size: var(--b-font-size-lg);
  font-weight: var(--b-font-weight-semibold);
  color: var(--b-text-muted);
}

/* ── 4-Layer Authorization Stack ──────────────────────────── */
.do-layer-stack {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--b-space-3);
}

.do-layer {
  display: flex;
  align-items: flex-start;
  gap: var(--b-space-6);
  background: var(--b-card-bg);
  border: 1px solid var(--b-card-border);
  border-radius: var(--b-radius-lg);
  padding: var(--b-space-6) var(--b-space-8);
  position: relative;
  transition: border-color var(--b-transition-normal), box-shadow var(--b-transition-normal);
}

.do-layer:hover {
  border-color: var(--b-color-primary);
  box-shadow: var(--b-glow-primary-sm);
}

.do-layer__number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--b-radius-full);
  background: var(--b-color-primary-subtle);
  border: 1px solid var(--b-color-primary);
  color: var(--b-color-primary-light);
  font-size: var(--b-font-size-sm);
  font-weight: var(--b-font-weight-bold);
  flex-shrink: 0;
}

.do-layer__content {
  flex: 1;
}

.do-layer__name {
  font-size: var(--b-font-size-md);
  font-weight: var(--b-font-weight-semibold);
  color: var(--b-text-primary);
  margin-bottom: var(--b-space-2);
}

.do-layer__desc {
  font-size: var(--b-font-size-sm);
  color: var(--b-text-muted);
  line-height: var(--b-line-height-relaxed);
}

.do-layer__connector {
  display: flex;
  justify-content: center;
  height: 24px;
  align-items: center;
}

.do-layer__connector svg {
  color: var(--b-color-primary);
  opacity: 0.4;
}

/* ── Performance Table ────────────────────────────────────── */
.do-perf-section__note {
  text-align: center;
  color: var(--b-text-muted);
  font-size: var(--b-font-size-sm);
  margin-top: var(--b-space-10);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.do-perf-table {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  border-collapse: collapse;
  border-radius: var(--b-radius-xl);
  overflow: hidden;
  border: 1px solid var(--b-border-default);
}

.do-perf-table thead tr {
  background: var(--b-bg-surface);
}

.do-perf-table th {
  padding: var(--b-space-4) var(--b-space-6);
  font-size: var(--b-font-size-xs);
  font-weight: var(--b-font-weight-bold);
  color: var(--b-color-primary);
  text-transform: uppercase;
  letter-spacing: var(--b-letter-spacing-wider);
  text-align: left;
  border-bottom: 1px solid var(--b-border-default);
}

.do-perf-table td {
  padding: var(--b-space-4) var(--b-space-6);
  font-size: var(--b-font-size-sm);
  color: var(--b-text-secondary);
  border-bottom: 1px solid var(--b-border-subtle);
}

.do-perf-table tbody tr:last-child td {
  border-bottom: none;
}

.do-perf-table tbody tr:nth-child(odd) {
  background: var(--b-bg-raised);
}

.do-perf-table tbody tr:nth-child(even) {
  background: var(--b-bg-surface);
}

.do-perf-table tbody tr:hover td {
  background: var(--b-color-primary-subtle);
  color: var(--b-text-primary);
}

.do-perf-table .do-perf-sla {
  font-family: var(--b-font-family-mono);
  font-weight: var(--b-font-weight-bold);
  color: var(--b-color-primary-light);
}

/* ── Use Cases Grid ───────────────────────────────────────── */
.do-use-cases {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--b-space-6);
}

.do-use-case {
  background: var(--b-card-bg);
  border: 1px solid var(--b-card-border);
  border-radius: var(--b-radius-xl);
  padding: var(--b-space-8);
  transition: border-color var(--b-transition-normal), box-shadow var(--b-transition-normal), transform var(--b-transition-normal);
}

.do-use-case:hover {
  border-color: var(--b-color-primary);
  box-shadow: var(--b-card-shadow-hover);
  transform: translateY(-2px);
}

.do-use-case__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--b-radius-lg);
  background: var(--b-color-primary-subtle);
  border: 1px solid var(--b-border-primary);
  color: var(--b-color-primary-light);
  margin-bottom: var(--b-space-6);
}

.do-use-case__vertical {
  display: inline-block;
  font-size: var(--b-font-size-xs);
  font-weight: var(--b-font-weight-bold);
  color: var(--b-color-primary);
  text-transform: uppercase;
  letter-spacing: var(--b-letter-spacing-wide);
  margin-bottom: var(--b-space-3);
}

.do-use-case__title {
  font-size: var(--b-font-size-xl);
  font-weight: var(--b-font-weight-bold);
  color: var(--b-text-primary);
  margin-bottom: var(--b-space-3);
}

.do-use-case__scenario {
  font-size: var(--b-font-size-base);
  color: var(--b-text-secondary);
  line-height: var(--b-line-height-relaxed);
  margin-bottom: var(--b-space-4);
}

.do-use-case__benefit {
  font-size: var(--b-font-size-sm);
  color: var(--b-color-primary-light);
  font-weight: var(--b-font-weight-medium);
}

/* ── Industry Verticals Grid ──────────────────────────────── */
.do-verticals-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--b-space-6);
}

.do-vertical-card {
  background: var(--b-card-bg);
  border: 1px solid var(--b-card-border);
  border-radius: var(--b-radius-xl);
  padding: var(--b-space-8) var(--b-space-6);
  text-align: center;
  transition: border-color var(--b-transition-normal), box-shadow var(--b-transition-normal);
}

.do-vertical-card:hover {
  border-color: var(--b-color-primary);
  box-shadow: var(--b-card-shadow-hover);
}

.do-vertical-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: var(--b-radius-lg);
  background: var(--b-color-primary-subtle);
  border: 1px solid var(--b-border-primary);
  color: var(--b-color-primary-light);
  margin: 0 auto var(--b-space-5);
}

.do-vertical-card__name {
  font-size: var(--b-font-size-md);
  font-weight: var(--b-font-weight-bold);
  color: var(--b-text-primary);
  margin-bottom: var(--b-space-4);
}

.do-vertical-card__uses {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--b-space-2);
}

.do-vertical-card__uses li {
  font-size: var(--b-font-size-sm);
  color: var(--b-text-muted);
}

/* ── Problem Cards ────────────────────────────────────────── */
.do-problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--b-space-6);
  margin-top: var(--b-space-8);
}

.do-problem-card {
  background: var(--b-card-bg);
  border: 1px solid var(--b-card-border);
  border-radius: var(--b-radius-xl);
  padding: var(--b-space-8);
  border-left: 3px solid rgba(239, 68, 68, 0.4);
}

.do-problem-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--b-radius-lg);
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: #EF4444;
  margin-bottom: var(--b-space-5);
}

.do-problem-card__title {
  font-size: var(--b-font-size-md);
  font-weight: var(--b-font-weight-bold);
  color: var(--b-text-primary);
  margin-bottom: var(--b-space-3);
}

.do-problem-card__body {
  font-size: var(--b-font-size-base);
  color: var(--b-text-muted);
  line-height: var(--b-line-height-relaxed);
}

/* ── Features Page: Design Pattern Cards ─────────────────── */
.do-pattern-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--b-space-6);
}

.do-pattern-card {
  background: var(--b-card-bg);
  border: 1px solid var(--b-card-border);
  border-radius: var(--b-radius-xl);
  padding: var(--b-space-8);
  transition: border-color var(--b-transition-normal), box-shadow var(--b-transition-normal);
}

.do-pattern-card:hover {
  border-color: var(--b-color-primary);
  box-shadow: var(--b-card-shadow-hover);
}

.do-pattern-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--b-radius-lg);
  background: var(--b-color-primary-subtle);
  border: 1px solid var(--b-border-primary);
  color: var(--b-color-primary-light);
  margin-bottom: var(--b-space-5);
}

.do-pattern-card__title {
  font-size: var(--b-font-size-md);
  font-weight: var(--b-font-weight-bold);
  color: var(--b-text-primary);
  margin-bottom: var(--b-space-3);
}

.do-pattern-card__how {
  font-size: var(--b-font-size-sm);
  color: var(--b-text-secondary);
  line-height: var(--b-line-height-relaxed);
  margin-bottom: var(--b-space-4);
}

.do-pattern-card__why {
  font-size: var(--b-font-size-sm);
  color: var(--b-color-primary-light);
  font-weight: var(--b-font-weight-medium);
  padding-top: var(--b-space-4);
  border-top: 1px solid var(--b-border-subtle);
}

/* ── Features Page: Domain Deep-dive ─────────────────────── */
.do-domain-deep-grid {
  display: flex;
  flex-direction: column;
  gap: var(--b-space-10);
}

.do-domain-deep-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--b-space-12);
  background: var(--b-card-bg);
  border: 1px solid var(--b-card-border);
  border-radius: var(--b-radius-2xl);
  padding: var(--b-space-12);
  align-items: start;
  transition: border-color var(--b-transition-normal);
}

.do-domain-deep-card:hover {
  border-color: var(--b-border-strong);
}

.do-domain-deep-card__label {
  display: inline-block;
  font-size: var(--b-font-size-xs);
  font-weight: var(--b-font-weight-bold);
  color: var(--b-color-primary);
  text-transform: uppercase;
  letter-spacing: var(--b-letter-spacing-wider);
  margin-bottom: var(--b-space-3);
}

.do-domain-deep-card__count-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--b-space-1) var(--b-space-3);
  background: var(--b-badge-bg);
  border: 1px solid var(--b-badge-border);
  border-radius: var(--b-radius-full);
  font-size: var(--b-font-size-xs);
  font-weight: var(--b-font-weight-bold);
  color: var(--b-badge-text);
  margin-left: var(--b-space-3);
  vertical-align: middle;
}

.do-domain-deep-card__title {
  font-size: var(--b-font-size-2xl);
  font-weight: var(--b-font-weight-bold);
  color: var(--b-text-primary);
  margin-bottom: var(--b-space-5);
  line-height: var(--b-line-height-tight);
}

.do-domain-deep-card__desc {
  font-size: var(--b-font-size-base);
  color: var(--b-text-secondary);
  line-height: var(--b-line-height-relaxed);
  margin-bottom: var(--b-space-6);
}

.do-domain-deep-card__concepts {
  display: flex;
  flex-direction: column;
  gap: var(--b-space-3);
}

.do-domain-deep-card__concept-label {
  font-size: var(--b-font-size-xs);
  font-weight: var(--b-font-weight-bold);
  color: var(--b-text-muted);
  text-transform: uppercase;
  letter-spacing: var(--b-letter-spacing-wide);
  margin-bottom: var(--b-space-3);
}

.do-domain-deep-card__concept-tag {
  display: inline-flex;
  align-items: center;
  padding: var(--b-space-1) var(--b-space-3);
  background: var(--b-bg-surface);
  border: 1px solid var(--b-border-subtle);
  border-radius: var(--b-radius-md);
  font-size: var(--b-font-size-xs);
  color: var(--b-text-secondary);
  font-family: var(--b-font-family-mono);
  margin: 2px;
}

.do-domain-deep-card__left {
  display: flex;
  flex-direction: column;
  gap: var(--b-space-4);
}

.do-domain-deep-card__right {
  display: flex;
  flex-direction: column;
  gap: var(--b-space-5);
}

.do-domain-deep-card__right-label {
  font-size: var(--b-font-size-xs);
  font-weight: var(--b-font-weight-bold);
  color: var(--b-text-muted);
  text-transform: uppercase;
  letter-spacing: var(--b-letter-spacing-wide);
  margin-bottom: var(--b-space-3);
}

.do-domain-deep-card__tables-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--b-space-2);
  margin-bottom: var(--b-space-8);
}

.do-domain-deep-card__tables-list li {
  display: flex;
  align-items: center;
  gap: var(--b-space-3);
  font-size: var(--b-font-size-sm);
  color: var(--b-text-secondary);
  font-family: var(--b-font-family-mono);
}

.do-domain-deep-card__tables-list li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--b-color-primary);
  flex-shrink: 0;
}

.do-domain-deep-card__use-label {
  font-size: var(--b-font-size-xs);
  font-weight: var(--b-font-weight-bold);
  color: var(--b-text-muted);
  text-transform: uppercase;
  letter-spacing: var(--b-letter-spacing-wide);
  margin-bottom: var(--b-space-3);
}

.do-domain-deep-card__use-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--b-space-2);
}

.do-domain-deep-card__use-list li {
  display: flex;
  align-items: center;
  gap: var(--b-space-3);
  font-size: var(--b-font-size-sm);
  color: var(--b-text-muted);
}

.do-domain-deep-card__use-list li::before {
  content: '';
  width: 16px;
  height: 2px;
  background: var(--b-color-primary);
  flex-shrink: 0;
  opacity: 0.6;
}

/* ── Architecture Stack (features page) ──────────────────── */
.do-arch-stack {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--b-space-3);
}

.do-arch-layer {
  background: var(--b-card-bg);
  border: 1px solid var(--b-card-border);
  border-radius: var(--b-radius-lg);
  padding: var(--b-space-5) var(--b-space-8);
  display: flex;
  align-items: center;
  gap: var(--b-space-6);
  transition: border-color var(--b-transition-normal);
}

.do-arch-layer:hover {
  border-color: var(--b-color-primary);
}

.do-arch-layer--primary {
  border-color: var(--b-color-primary);
  background: var(--b-color-primary-subtle);
}

.do-arch-layer__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--b-radius-md);
  background: var(--b-color-primary-subtle);
  border: 1px solid var(--b-border-primary);
  color: var(--b-color-primary-light);
  flex-shrink: 0;
}

.do-arch-layer--primary .do-arch-layer__icon {
  background: rgba(22, 163, 74, 0.25);
}

.do-arch-layer__name {
  font-size: var(--b-font-size-base);
  font-weight: var(--b-font-weight-semibold);
  color: var(--b-text-primary);
}

.do-arch-layer__detail {
  font-size: var(--b-font-size-sm);
  color: var(--b-text-muted);
  margin-left: auto;
}

.do-arch-arrow {
  display: flex;
  justify-content: center;
  color: var(--b-color-primary);
  opacity: 0.35;
}

/* ── Compliance Cards ─────────────────────────────────────── */
.do-compliance-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--b-space-6);
}

.do-compliance-card {
  background: var(--b-card-bg);
  border: 1px solid var(--b-card-border);
  border-radius: var(--b-radius-xl);
  padding: var(--b-space-8);
  transition: border-color var(--b-transition-normal), box-shadow var(--b-transition-normal);
}

.do-compliance-card:hover {
  border-color: var(--b-color-primary);
  box-shadow: var(--b-card-shadow-hover);
}

.do-compliance-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--b-radius-lg);
  background: var(--b-color-primary-subtle);
  border: 1px solid var(--b-border-primary);
  color: var(--b-color-primary-light);
  margin-bottom: var(--b-space-5);
}

.do-compliance-card__title {
  font-size: var(--b-font-size-md);
  font-weight: var(--b-font-weight-bold);
  color: var(--b-text-primary);
  margin-bottom: var(--b-space-3);
}

.do-compliance-card__body {
  font-size: var(--b-font-size-sm);
  color: var(--b-text-muted);
  line-height: var(--b-line-height-relaxed);
}

/* ── Observability Cards ──────────────────────────────────── */
.do-observability-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--b-space-6);
}

.do-obs-card {
  background: var(--b-card-bg);
  border: 1px solid var(--b-card-border);
  border-radius: var(--b-radius-xl);
  padding: var(--b-space-6);
  transition: border-color var(--b-transition-normal);
}

.do-obs-card:hover {
  border-color: var(--b-color-primary);
}

.do-obs-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--b-radius-lg);
  background: var(--b-color-primary-subtle);
  color: var(--b-color-primary-light);
  margin-bottom: var(--b-space-4);
}

.do-obs-card__title {
  font-size: var(--b-font-size-base);
  font-weight: var(--b-font-weight-bold);
  color: var(--b-text-primary);
  margin-bottom: var(--b-space-2);
}

.do-obs-card__body {
  font-size: var(--b-font-size-sm);
  color: var(--b-text-muted);
  line-height: var(--b-line-height-relaxed);
}

/* ── Hero Page Variants ───────────────────────────────────── */
.do-page-hero {
  position: relative;
  background: var(--b-bg-base);
  padding: var(--b-space-32) 0 var(--b-space-20);
  text-align: center;
  overflow: hidden;
}

.do-page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 50% 0%, rgba(22, 163, 74, 0.10) 0%, transparent 60%),
    radial-gradient(ellipse 40% 30% at 80% 80%, rgba(59, 130, 246, 0.04) 0%, transparent 50%);
  pointer-events: none;
}

.do-page-hero__inner {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--b-space-8);
}

.do-page-hero__headline {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: var(--b-font-weight-black);
  color: var(--b-text-primary);
  letter-spacing: var(--b-letter-spacing-tight);
  line-height: var(--b-line-height-tight);
  margin-bottom: var(--b-space-6);
}

.do-page-hero__sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--b-text-secondary);
  line-height: var(--b-line-height-relaxed);
}

/* ── Table Scroll Wrapper ─────────────────────────────────── */
.do-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 1024px) {
  .do-domain-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .do-use-cases {
    grid-template-columns: repeat(2, 1fr);
  }

  .do-verticals-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .do-pattern-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .do-compliance-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .do-observability-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .do-domain-deep-card {
    grid-template-columns: 1fr;
    gap: var(--b-space-8);
  }

  .do-pattern-fields {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .do-arch-layer {
    flex-wrap: wrap;
  }

  .do-arch-layer__detail {
    margin-left: 0;
    width: 100%;
    padding-top: var(--b-space-1);
  }

  .do-hero__inner {
    padding: var(--b-space-20) var(--b-space-6) var(--b-space-16);
  }

  .do-stats-bar__inner {
    gap: var(--b-space-2);
    padding: 0 var(--b-space-4);
  }

  .do-stat {
    padding: var(--b-space-3) var(--b-space-4);
    min-width: 100px;
  }

  .do-stat__divider {
    display: none;
  }

  .do-domain-grid {
    grid-template-columns: 1fr;
  }

  .do-problem-grid {
    grid-template-columns: 1fr;
  }

  .do-use-cases {
    grid-template-columns: 1fr;
  }

  .do-verticals-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .do-pattern-grid {
    grid-template-columns: 1fr;
  }

  .do-compliance-grid {
    grid-template-columns: 1fr;
  }

  .do-observability-grid {
    grid-template-columns: 1fr;
  }

  .do-layer {
    padding: var(--b-space-5) var(--b-space-5);
  }
}

@media (max-width: 480px) {
  .do-hero__ctas {
    flex-direction: column;
    align-items: center;
  }

  .do-verticals-grid {
    grid-template-columns: 1fr;
  }

  .do-domain-deep-card {
    padding: var(--b-space-6);
  }
}