/* ============================================================
   BUSINESS SYSTEMS PAGE — page-scoped styles only.
   Reuses tokens/components from style.css (colors, spacing,
   .section, .btn, .diagram_*, .cta). Nothing here overrides
   the shared stylesheet.
   ============================================================ */

/* ------------------------------------------------------------
   SCROLL REVEAL
   Elements pop in as they enter the viewport. One-time, subtle:
   fade + slight rise, matches the "Fade / Slide" motion allowed
   by the design philosophy. Staggered via nth-child below.
   ------------------------------------------------------------ */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 700ms var(--ease-standard), transform 700ms var(--ease-standard);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    transition: none;
    opacity: 1;
    transform: none;
  }
}

/* Stagger grids and lists so items pop in sequentially rather than all at once */
.bs-systems-grid .reveal:nth-child(2) { transition-delay: 80ms; }
.bs-systems-grid .reveal:nth-child(3) { transition-delay: 160ms; }
.bs-systems-grid .reveal:nth-child(4) { transition-delay: 240ms; }
.bs-systems-grid .reveal:nth-child(5) { transition-delay: 320ms; }
.bs-systems-grid .reveal:nth-child(6) { transition-delay: 400ms; }

.bs-outcomes .reveal:nth-child(2) { transition-delay: 60ms; }
.bs-outcomes .reveal:nth-child(3) { transition-delay: 120ms; }
.bs-outcomes .reveal:nth-child(4) { transition-delay: 180ms; }
.bs-outcomes .reveal:nth-child(5) { transition-delay: 240ms; }
.bs-outcomes .reveal:nth-child(6) { transition-delay: 300ms; }

.bs-transform_col.reveal:nth-child(3) { transition-delay: 120ms; }
.bs-transform_col.reveal:nth-child(5) { transition-delay: 240ms; }

/* ------------------------------------------------------------
   HERO — supporting lead paragraph (in addition to shared
   .hero_description, which carries the shorter line)
   ------------------------------------------------------------ */

.bs-hero {
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}

.bs-hero .hero_inner {
  max-width: var(--max-width);
  gap: clamp(var(--space-4), 5vw, var(--space-12));
  align-items: center;
}

.bs-hero .hero_content {
  max-width: 560px;
}

.bs-hero .hero_title {
  font-size: clamp(2.8rem, 3.7vw, 4rem);
  line-height: 0.98;
  letter-spacing: -0.06em;
}

.bs-hero .hero_description {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  max-width: 520px;
  line-height: 1.35;
}

.bs-hero_lead {
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-top: var(--space-2);
  max-width: 560px;
}

.bs-hero .hero_visual {
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.65);
}

/* ------------------------------------------------------------
   COMPARISON (Tool-Driven vs System-Driven / Without vs With AI)
   ------------------------------------------------------------ */

.bs-compare {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: var(--space-4);
  align-items: stretch;
  max-width: 980px;
  margin: 0 auto;
}

.bs-compare--stacked {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 860px;
}

.bs-compare_col {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
  padding: var(--space-4);
  min-height: 100%;
}

.bs-compare_heading {
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.bs-compare_list {
  list-style: none;
  margin: 0 0 var(--space-3);
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.bs-compare_list li {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  padding: var(--space-1) var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-input);
  background: rgba(255, 255, 255, 0.45);
}

/* Loosely spaced, unconnected items — visually "disconnected" */
.bs-compare_list--loose li {
  border-style: dashed;
}

/* Connected flow — solid, joined by a line */
.bs-compare_list--flow {
  position: relative;
  padding-left: var(--space-3);
}

.bs-compare_list--flow li {
  border: none;
  background-color: var(--color-bg-alt);
  position: relative;
}

.bs-compare_list--flow::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 20px;
  bottom: 20px;
  width: 1px;
  background-color: var(--color-border);
}

.bs-compare_list-highlight {
  background-color: var(--color-text-primary) !important;
  color: var(--color-bg-card) !important;
  opacity: 0.88;
}

.bs-compare_result {
  font-weight: 600;
  font-size: 0.9375rem;
  margin: 0;
}

.bs-compare_result--negative { color: var(--color-text-secondary); }
.bs-compare_result--positive { color: var(--color-accent); }

.bs-compare_divider {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  padding-top: var(--space-8);
  opacity: 0.8;
}

.bs-compare_divider svg { width: 22px; height: 22px; }

/* ------------------------------------------------------------
   VERTICAL FLOW (definition steps, improve cycle, flywheel)
   ------------------------------------------------------------ */

.bs-flow {
  list-style: none;
  margin: 0 auto;
  padding: 0;
  max-width: 440px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: var(--space-3);
}

.bs-flow_step {
  position: relative;
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
  text-align: center;
  font-weight: 500;
}

.bs-flow_step:last-child { margin-bottom: 0; }

.bs-flow_step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: calc(-1 * var(--space-3));
  transform: translateX(-50%);
  width: 1px;
  height: var(--space-3);
  background-color: var(--color-border);
}

.bs-flow_step--result {
  background-color: var(--color-text-primary);
  border-color: var(--color-text-primary);
  color: var(--color-bg-main);
}

.bs-flow_loop-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  margin-top: var(--space-3);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.bs-flow_loop-note svg { width: 16px; height: 16px; }

.bs-flow--flywheel { max-width: 480px; }

/* ------------------------------------------------------------
   MONOLITH MODEL diagram wrapper
   ------------------------------------------------------------ */

.bs-model {
  position: relative;
  max-width: 760px;
  height: 500px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-image);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  isolation: isolate;
}

.bs-model::before {
  content: "";
  position: absolute;
  inset: 8% 18%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(17, 17, 17, 0.08), rgba(17, 17, 17, 0.02) 50%, transparent 72%);
  filter: blur(10px);
  z-index: 0;
}

.bs-model::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(17, 17, 17, 0.04) 50%,
    transparent 100%
  );
  opacity: 0.5;
  z-index: 0;
}

.bs-model_core {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: min(220px, 46%);
  min-height: 100px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-4);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(17, 17, 17, 0.97), rgba(17, 17, 17, 0.92));
  color: var(--color-bg-main);
  box-shadow: 0 18px 40px rgba(17, 17, 17, 0.18);
  z-index: 2;
  transition: transform 240ms var(--ease-standard), box-shadow 240ms var(--ease-standard), background 240ms var(--ease-standard);
}

.bs-model_core-label {
  font-family: var(--font-heading);
  font-size: clamp(1.1rem, 1.2vw, 1.35rem);
  font-weight: 600;
  line-height: 1.2;
  text-align: center;
}

.bs-model_core-sub {
  font-size: 0.72rem;
  color: rgba(250, 250, 248, 0.7);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-top: 6px;
  text-align: center;
}

.bs-model_node {
  position: absolute;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 150px;
  min-height: 62px;
  padding: 0.85rem 1.2rem;
  border: 1px solid rgba(17, 17, 17, 0.08);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.86);
  color: var(--color-text-primary);
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  box-shadow: 0 10px 25px rgba(17, 17, 17, 0.06);
  transition: transform 220ms var(--ease-standard), box-shadow 220ms var(--ease-standard), border-color 220ms var(--ease-standard), background 220ms var(--ease-standard), color 220ms var(--ease-standard);
  cursor: pointer;
}

.bs-model_node:hover,
.bs-model_node:focus-visible,
.bs-model_node.is-active {
  transform: translateY(-3px) scale(1.02);
  border-color: rgba(17, 17, 17, 0.18);
  background: var(--color-text-primary);
  color: var(--color-bg-main);
  box-shadow: 0 18px 35px rgba(17, 17, 17, 0.12);
}

.bs-model_node[data-node="ai"] {
  left: 50%;
  top: 14%;
  transform: translateX(-50%);
}

.bs-model_node[data-node="automation"] {
  left: 9%;
  top: 42%;
}

.bs-model_node[data-node="analytics"] {
  right: 9%;
  top: 42%;
}

.bs-model_node[data-node="software"] {
  left: 50%;
  bottom: 16%;
  transform: translateX(-50%);
}

.bs-model_node[data-node="processes"] {
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) scale(1.06);
  border-color: rgba(17, 17, 17, 0.2);
  background: rgba(17, 17, 17, 0.05);
}

.bs-model[data-active="ai"] .bs-model_node[data-node="ai"],
.bs-model[data-active="automation"] .bs-model_node[data-node="automation"],
.bs-model[data-active="analytics"] .bs-model_node[data-node="analytics"],
.bs-model[data-active="software"] .bs-model_node[data-node="software"],
.bs-model[data-active="processes"] .bs-model_node[data-node="processes"] {
  background: var(--color-text-primary);
  color: var(--color-bg-main);
  border-color: rgba(17, 17, 17, 0.18);
  box-shadow: 0 18px 35px rgba(17, 17, 17, 0.14);
}

.bs-model[data-active="ai"] .bs-model_core,
.bs-model[data-active="automation"] .bs-model_core,
.bs-model[data-active="analytics"] .bs-model_core,
.bs-model[data-active="software"] .bs-model_core,
.bs-model[data-active="processes"] .bs-model_core {
  transform: translate(-50%, -50%) scale(1.02);
  box-shadow: 0 22px 48px rgba(17, 17, 17, 0.2);
}

.bs-model[data-active="ai"] .bs-model_core {
  background: linear-gradient(180deg, rgba(17, 17, 17, 0.97), rgba(17, 17, 17, 0.92));
}

.bs-model[data-active="automation"] .bs-model_core {
  background: linear-gradient(180deg, rgba(34, 34, 34, 0.98), rgba(17, 17, 17, 0.92));
}

.bs-model[data-active="analytics"] .bs-model_core {
  background: linear-gradient(180deg, rgba(22, 22, 22, 0.98), rgba(17, 17, 17, 0.9));
}

.bs-model[data-active="software"] .bs-model_core {
  background: linear-gradient(180deg, rgba(17, 17, 17, 0.99), rgba(17, 17, 17, 0.88));
}

.bs-model[data-active="processes"] .bs-model_core {
  background: linear-gradient(180deg, rgba(17, 17, 17, 0.99), rgba(17, 17, 17, 0.88));
}

.bs-model_note {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  margin-top: var(--space-4);
}

/* ------------------------------------------------------------
   CHIPS (One System, Many Technologies)
   ------------------------------------------------------------ */

.bs-chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
  max-width: 640px;
  margin: 0 auto;
}

.bs-chip {
  font-size: 0.875rem;
  font-weight: 500;
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background-color: var(--color-bg-card);
  color: var(--color-text-primary);
}

.bs-chips_arrow {
  display: flex;
  justify-content: center;
  margin: var(--space-3) 0;
  color: var(--color-text-secondary);
}

.bs-chips_arrow svg { width: 20px; height: 20px; }

.bs-chips_result {
  max-width: 360px;
  margin: 0 auto;
  text-align: center;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.125rem;
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-text-primary);
  color: var(--color-bg-main);
  border-radius: var(--radius-card);
}

/* ------------------------------------------------------------
   EXPANDABLE SYSTEM CARDS
   ------------------------------------------------------------ */

.bs-systems-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}

.bs-system-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition: box-shadow var(--duration-standard) var(--ease-standard),
              transform var(--duration-standard) var(--ease-standard);
}

.bs-system-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(17, 17, 17, 0.06), 0 12px 24px rgba(17, 17, 17, 0.06);
}

.bs-system-card_toggle {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  background: none;
  border: none;
  text-align: left;
  padding: var(--space-4);
  font-family: inherit;
  color: inherit;
}

.bs-system-card_number {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-accent);
  font-size: 0.9375rem;
  flex-shrink: 0;
  padding-top: 2px;
}

.bs-system-card_head {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.bs-system-card_title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.0625rem;
}

.bs-system-card_text {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.bs-system-card_icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-text-primary);
  transition: transform var(--duration-standard) var(--ease-standard),
              border-color var(--duration-standard) var(--ease-standard);
}

.bs-system-card_icon svg { width: 14px; height: 14px; }

.bs-system-card.is-open .bs-system-card_icon {
  transform: rotate(45deg);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.bs-system-card_detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-standard) var(--ease-standard);
}

.bs-system-card_detail ul {
  list-style: none;
  margin: 0;
  padding: 0 var(--space-4) var(--space-4) calc(var(--space-3) + 20px + var(--space-3));
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.bs-system-card_detail li {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  position: relative;
  padding-left: var(--space-3);
}

.bs-system-card_detail li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--color-accent);
}

/* ------------------------------------------------------------
   TRANSFORMATION (Fragmented → Connected → Intelligent)
   ------------------------------------------------------------ */

.bs-transform {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: var(--space-3);
  align-items: start;
}

.bs-transform_col {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
  padding: var(--space-3);
}

.bs-transform_heading {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
  text-align: center;
}

.bs-transform_list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.bs-transform_list li {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  text-align: center;
  padding: var(--space-1);
  border-radius: var(--radius-input);
  background-color: var(--color-bg-alt);
}

.bs-transform_arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  padding-top: var(--space-6);
}

.bs-transform_arrow svg { width: 18px; height: 18px; }

/* ------------------------------------------------------------
   OUTCOMES (How We Measure a System)
   ------------------------------------------------------------ */

.bs-outcomes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}

.bs-outcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  text-align: center;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
  padding: var(--space-4) var(--space-3);
  font-weight: 500;
  font-size: 0.9375rem;
  transition: transform var(--duration-standard) var(--ease-standard);
}

.bs-outcome:hover {
  transform: translateY(-2px);
}

.bs-outcome svg {
  width: 36px;
  height: 36px;
  color: var(--color-accent);
}

.text-main{
    font-size: 1.08rem;
    font-weight: 500;
}

/* ------------------------------------------------------------
   RESPONSIVE
   ------------------------------------------------------------ */

@media (max-width: 1024px) {
  .bs-compare { grid-template-columns: 1fr; }
  .bs-compare_divider { padding-top: 0; transform: rotate(90deg); }
  .bs-compare--stacked { grid-template-columns: 1fr; }

  .bs-transform { grid-template-columns: 1fr; }
  .bs-transform_arrow { padding-top: 0; transform: rotate(90deg); }
}

@media (max-width: 768px) {
  .bs-systems-grid { grid-template-columns: 1fr; }
  .bs-outcomes { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .bs-outcomes { grid-template-columns: 1fr; }
  .bs-chips { gap: var(--space-1); }
}