/* ==========================================================================
   case-study.css — Immersive case study with compact, readable layout
   ========================================================================== */


/* ── Password Gate ────────────────────────────────────────────────────── */

body.password-locked {
  overflow: hidden;
}

body.password-locked .site-wrapper {
  filter: blur(20px);
  pointer-events: none;
  user-select: none;
}

.password-gate {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.password-gate--unlocked {
  opacity: 0;
  visibility: hidden;
}

.password-gate__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 380px;
  width: 90%;
  text-align: center;
}

.password-gate__icon {
  color: var(--text-tertiary);
  margin-bottom: var(--space-md);
}

.password-gate__title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 1.8rem);
  font-weight: 400;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.password-gate__desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

.password-gate__form {
  width: 100%;
}

.password-gate__input-wrap {
  display: flex;
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  overflow: hidden;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: border-color var(--duration-fast) var(--ease-smooth);
}

.password-gate__input-wrap:focus-within {
  border-color: var(--accent);
}

.password-gate__input {
  flex: 1;
  padding: 0.85rem 1.4rem;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
}

.password-gate__input::placeholder {
  color: var(--text-tertiary);
}

.password-gate__submit {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 1.2rem;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color var(--duration-fast) var(--ease-smooth);
}

.password-gate__submit:hover {
  color: var(--accent);
}

.password-gate__error {
  font-size: 0.85rem;
  color: #e04545;
  margin-top: var(--space-sm);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.password-gate__error--visible {
  opacity: 1;
}

.password-gate__divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
  margin: var(--space-md) 0;
  color: var(--text-tertiary);
  font-size: 0.85rem;
}

.password-gate__divider::before,
.password-gate__divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--glass-border);
}

.password-gate__request {
  font-size: 0.95rem;
  color: var(--accent);
  text-decoration: none;
  padding: 0.6rem 1.6rem;
  border: 1px solid var(--accent);
  border-radius: 50px;
  transition: all var(--duration-fast) var(--ease-smooth);
}

.password-gate__request:hover {
  background: var(--accent);
  color: #fff;
}


/* ── Back Navigation (fixed top-left) ─────────────────────────────────── */

.cs-nav {
  position: fixed;
  top: 1.5rem;
  left: 1.5rem;
  z-index: 100;
}

.cs-nav__back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.2rem;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  transition: all var(--duration-fast) var(--ease-smooth);
}

.cs-nav__theme {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
}

.cs-nav__back:hover {
  color: var(--accent);
  border-color: rgba(201, 131, 78, 0.2);
  transform: translateX(-4px);
}

.cs-nav__back svg {
  transition: transform var(--duration-fast);
}

.cs-nav__back:hover svg {
  transform: translateX(-2px);
}




/* ==========================================================================
   CASE STUDY HERO — Full viewport, massive phone
   ========================================================================== */

.cs-hero {
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 6rem 2rem 4rem;
  text-align: center;
}

.cs-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.cs-hero__gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(201, 131, 78, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 80%, rgba(201, 131, 78, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(140, 90, 50, 0.04) 0%, transparent 60%);
}

.cs-hero__content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.cs-hero__meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: var(--space-lg);
}

.cs-hero__tag {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  padding: 0.35rem 0.9rem;
  border: 1px solid var(--border-light);
  border-radius: 50px;
}

.cs-hero__title {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 10vw, 8rem);
  font-weight: 400;
  color: var(--text-primary);
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-md);
}

.cs-hero__title em {
  color: var(--accent);
  font-style: italic;
}

.cs-hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 550px;
  margin: 0 auto;
}

/* ── ContainerScroll — 3D perspective hero phone ────────────────────── */

.cs-hero__phone-wrapper {
  position: relative;
  z-index: 1;
  margin-top: var(--space-xl);
  perspective: 1200px;
  width: 100%;
  max-width: 900px;
}

.cs-hero__phone {
  position: relative;
  width: 100%;
  transform-style: preserve-3d;
  transform: rotateX(20deg) scale(0.92);
  transform-origin: center top;
  border-radius: 24px;
  overflow: hidden;
  opacity: 0;
  box-shadow: 0 60px 120px rgba(0, 0, 0, 0.25),
              0 30px 60px rgba(201, 131, 78, 0.1);
}

.cs-hero__phone img {
  width: 100%;
  height: auto;
  display: block;
}

/* ── Budget Tracker hero — phone mockup ─────────────────────────────── */

.bt-hero__phone {
  margin: var(--space-xl) auto 0;
  width: 240px;
  border-radius: 32px;
  overflow: hidden;
  background: #000;
  border: 4px solid #333;
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.25),
              0 20px 40px rgba(0, 0, 0, 0.15),
              inset 0 0 0 1px rgba(255, 255, 255, 0.05);
  opacity: 0;
  transform: translateY(20px);
}

.bt-hero__phone img {
  width: 100%;
  height: auto;
  display: block;
}

@media (max-width: 768px) {
  .bt-hero__phone {
    width: 200px;
    border-radius: 28px;
  }
}

@media (max-width: 480px) {
  .bt-hero__phone {
    width: 180px;
    border-radius: 24px;
    border-width: 3px;
  }
}

/* Scroll indicator */
.cs-hero__scroll {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  z-index: 1;
}

.cs-hero__scroll span {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--text-muted);
}

.cs-hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollBounce 2s ease-in-out infinite;
}


/* ==========================================================================
   BLOCK SYSTEM — Compact section spacing
   ========================================================================== */

.cs-block {
  padding: clamp(2.5rem, 5vh, 4rem) 0;
  position: relative;
}

.cs-block__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}


.cs-block--centered {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.cs-block--dark {
  background: var(--bg-contrast);
}

.cs-block--alt {
  background: var(--bg-secondary);
}

.cs-block--accent {
  background: var(--accent);
}


/* ==========================================================================
   TYPOGRAPHY — Case study specific
   ========================================================================== */

.cs-label {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: var(--space-md);
}

.cs-label--light {
  color: rgba(255, 255, 255, 0.6);
}

.cs-heading {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 400;
  color: var(--text-primary);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.cs-heading--light {
  color: #FFFFFF;
}

.cs-body {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 600px;
}

.cs-big-text {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 400;
  color: var(--text-primary);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.cs-big-text em {
  color: var(--accent);
  font-style: italic;
}

.cs-big-text--white {
  color: #FFFFFF;
}

.cs-big-text--white em {
  color: #FFFFFF;
  text-decoration: underline;
  text-decoration-color: rgba(255, 255, 255, 0.4);
  text-underline-offset: 6px;
}

.cs-section-header {
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

.cs-section-header--center {
  text-align: center;
}

.cs-section-header--center .cs-heading {
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cs-section-header--light .cs-label { color: rgba(255, 255, 255, 0.5); }


/* ==========================================================================
   CONTEXT — Problem setup with details grid
   ========================================================================== */

.cs-context {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.cs-context__details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  padding-top: var(--space-sm);
}

.cs-detail {
  padding: var(--space-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
}

.cs-detail__label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.cs-detail__value {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
}


/* ==========================================================================
   STAT HERO — Big number (standalone, no phone)
   ========================================================================== */

.cs-stat-hero {
  text-align: center;
}

.cs-stat-hero__number {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.25rem;
}

.cs-stat-hero__value {
  font-family: var(--font-display);
  font-size: clamp(4rem, 15vw, 12rem);
  color: var(--accent);
  line-height: 1;
}

.cs-stat-hero__unit {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 5rem);
  color: var(--accent);
}

.cs-stat-hero__label {
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.5;
}

.cs-stat-hero__source {
  font-family: monospace;
  font-size: 0.65rem;
  color: rgba(255, 255, 255, 0.3);
  margin-top: var(--space-sm);
  letter-spacing: 0.03em;
}


/* ==========================================================================
   FINDINGS — Side-by-side: phone + content, alternating layout
   ========================================================================== */

.cs-findings {
  display: flex;
  flex-direction: column;
  gap: clamp(2rem, 4vw, 3rem);
}

.cs-finding {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

/* Alternate layout — swap phone to right, keep phone in wider column */
.cs-finding:nth-child(even) {
  grid-template-columns: 1fr 1.5fr;
}

.cs-finding:nth-child(even) .cs-finding__phone {
  order: 2;
}

.cs-finding:nth-child(even) .cs-finding__content {
  order: 1;
}

/* ── Finding phone — fills its grid cell ─────────────────────────────── */

.cs-finding__phone {
  width: 100%;
  border-radius: 16px;
  overflow: hidden;
}

.cs-finding__phone img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 16px;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.1));
}

/* ── Finding content — title, description, callout ───────────────────── */

.cs-finding__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.cs-finding__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.cs-finding__desc {
  font-size: clamp(0.9rem, 1.2vw, 1rem);
  color: var(--text-secondary);
  line-height: 1.7;
}

.cs-finding__callout {
  padding: var(--space-sm) var(--space-md);
  background: var(--accent-deep);
  border: 1px solid rgba(201, 131, 78, 0.12);
  border-radius: 12px;
  margin-top: var(--space-xs);
}

.cs-finding__callout p {
  font-size: clamp(0.85rem, 1.1vw, 0.95rem);
  color: var(--text-secondary);
  line-height: 1.7;
  font-style: italic;
}

.cs-finding__callout em {
  color: var(--accent);
  font-style: italic;
}


/* ==========================================================================
   EVOLUTION — 3-column card grid
   ========================================================================== */

.cs-evolution {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
  max-width: 1300px;
  margin: 0 auto;
}

.cs-evolution__step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.cs-evolution__version {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  background: rgba(201, 131, 78, 0.08);
  border: 1px solid rgba(201, 131, 78, 0.15);
  padding: 0.35rem 1rem;
  border-radius: 50px;
  margin-bottom: var(--space-md);
}

.cs-evolution__version--final {
  background: var(--accent);
  border-color: var(--accent);
  color: #FFFFFF;
}

.cs-evolution__phone {
  width: 100%;
  margin-bottom: var(--space-md);
  border-radius: 16px;
  overflow: hidden;
}

.cs-evolution__phone img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 16px;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.1));
}

.cs-evolution__title {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
  letter-spacing: -0.02em;
}

.cs-evolution__desc {
  font-size: clamp(0.85rem, 1vw, 0.95rem);
  color: var(--text-secondary);
  line-height: 1.6;
}

.cs-evolution__desc em {
  color: var(--accent);
  font-style: italic;
}


/* ==========================================================================
   FINAL SHOWCASE — Horizontal scroll-snap phone gallery
   ========================================================================== */

.cs-showcase-full {
  overflow: visible;
  padding: 0 var(--space-md);
  max-width: 1400px;
  margin: 0 auto;
}

.cs-showcase-full__track {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(3rem, 6vw, 5rem);
}

.cs-showcase-full__phone {
  width: 100%;
  max-width: 1200px;
  text-align: center;
  transition: transform var(--duration-normal) var(--ease-smooth);
}

.cs-showcase-full__phone:hover {
  transform: translateY(-8px);
}

.cs-showcase-full__phone img {
  width: 100%;
  height: auto;
  border-radius: 16px;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.12));
}

.cs-showcase-full__phone--hero {
  max-width: 1200px;
}

.cs-showcase-full__phone--hero:hover {
  transform: translateY(-8px);
}

.cs-showcase-full__phone--hero img {
  filter: drop-shadow(0 30px 60px rgba(201, 131, 78, 0.1))
          drop-shadow(0 16px 32px rgba(0, 0, 0, 0.08));
}

.cs-showcase-full__caption {
  display: block;
  margin-top: var(--space-sm);
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.cs-showcase-full__desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 600px;
  margin: 0.5rem auto 0;
}


/* ==========================================================================
   QUOTE BLOCK — Dramatic pull quote
   ========================================================================== */

.cs-quote-block {
  text-align: center;
  position: relative;
}

.cs-quote-block__mark {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 10rem);
  color: var(--accent);
  opacity: 0.12;
  line-height: 0.8;
  display: block;
  margin-bottom: -1rem;
}

.cs-quote-block__text {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2.5rem);
  font-weight: 400;
  color: var(--text-primary);
  line-height: 1.3;
  font-style: italic;
  margin-bottom: var(--space-lg);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.cs-quote-block__text em {
  color: var(--accent);
  font-style: italic;
}

.cs-quote-block__source {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-muted);
  font-style: normal;
}


/* ==========================================================================
   METRICS — Impact numbers
   ========================================================================== */

.cs-metrics__note {
  font-family: monospace;
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.4);
  text-align: center;
  margin-bottom: var(--space-md);
  letter-spacing: 0.03em;
}

.cs-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  text-align: center;
}

.cs-metric {
  padding: var(--space-lg);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.cs-metric__number {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.15rem;
  margin-bottom: var(--space-sm);
}

.cs-metric__number span:first-child {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 7vw, 5rem);
  color: var(--accent);
  line-height: 1;
}

.cs-metric__unit {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--accent);
}

.cs-metric__label {
  font-size: 1rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 0.5rem;
}

.cs-metric__context {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.4);
  line-height: 1.5;
}

/* Hero-sized impact numbers */
.cs-metrics--hero .cs-metric {
  background: none;
  border: none;
  padding: var(--space-md);
}

.cs-metrics--hero .cs-metric__number span:first-child {
  font-size: clamp(5rem, 12vw, 9rem);
}

.cs-metrics--hero .cs-metric__unit {
  font-size: clamp(2.5rem, 5vw, 4rem);
}


/* ==========================================================================
   MEASURING SUCCESS — KPI cards
   ========================================================================== */

.cs-kpis {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.cs-kpi {
  padding: var(--space-lg);
  border-radius: 16px;
  background: var(--card-bg, rgba(255, 255, 255, 0.03));
  border: 1px solid var(--border-subtle);
  transition: border-color var(--duration-fast) var(--ease-smooth);
}

.cs-kpi:hover {
  border-color: rgba(201, 131, 78, 0.2);
}

.cs-kpi__name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.cs-kpi__rationale {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.cs-kpis__note {
  font-family: monospace;
  font-size: 0.75rem;
  color: var(--text-muted, rgba(255, 255, 255, 0.35));
  text-align: center;
  margin-top: var(--space-lg);
  letter-spacing: 0.03em;
}


/* ==========================================================================
   REFLECTION — Closing thoughts
   ========================================================================== */

.cs-reflection {
  max-width: 700px;
  margin: 0 auto;
}

.cs-reflection .cs-body {
  max-width: 100%;
}


/* ==========================================================================
   CASE STUDY FOOTER
   ========================================================================== */

.cs-footer {
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md) var(--space-2xl);
  border-top: 1px solid var(--border-subtle);
}

/* ── Nav row: Back to Top + Back to Home ──────────────────────────────── */

.cs-footer__nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.cs-footer__top {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.2rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 50px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--duration-fast) var(--ease-smooth);
}

.cs-footer__top:hover {
  color: var(--accent);
  border-color: rgba(201, 131, 78, 0.2);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.cs-footer__top svg {
  transition: transform var(--duration-fast);
}

.cs-footer__top:hover svg {
  transform: translateY(-2px);
}

/* ── Next Case Study Card ─────────────────────────────────────────────── */

.cs-footer__next {
  display: block;
  text-decoration: none;
  color: inherit;
}

.cs-footer__next-label {
  display: block;
  text-align: center;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-sm);
}

.cs-footer__next-card {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  overflow: hidden;
  transition: all 0.5s var(--ease-smooth);
}

.cs-footer__next:hover .cs-footer__next-card {
  transform: scale(1.01);
  border-color: rgba(201, 131, 78, 0.25);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.1), 0 8px 24px rgba(201, 131, 78, 0.08);
}

.cs-footer__next-image {
  padding: var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
}

.cs-footer__next-image img {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 12px 32px rgba(0, 0, 0, 0.1));
  transition: transform 0.5s var(--ease-smooth);
}

.cs-footer__next:hover .cs-footer__next-image img {
  transform: scale(1.04) translateY(-4px);
}

.cs-footer__next-info {
  padding: var(--space-lg) var(--space-lg);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.cs-footer__next-title {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.5vw, 2rem);
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: var(--space-xs);
}

.cs-footer__next-title em {
  font-style: italic;
}

.cs-footer__next-desc {
  font-size: clamp(0.85rem, 1.2vw, 0.95rem);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.cs-footer__next-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  transition: gap var(--duration-fast) var(--ease-smooth);
}

.cs-footer__next:hover .cs-footer__next-arrow {
  gap: 0.7rem;
}

.cs-footer__next-arrow svg {
  transition: transform var(--duration-fast);
}

.cs-footer__next:hover .cs-footer__next-arrow svg {
  transform: translateX(3px);
}


/* ==========================================================================
   HERO ANIMATION STATES
   ========================================================================== */

.cs-hero [data-animate] {
  opacity: 0;
  transform: translateY(30px);
}

.cs-hero [data-animate].revealed {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.8s var(--ease-smooth),
              transform 0.8s var(--ease-smooth);
}


/* ==========================================================================
   INITIAL ANIMATION STATES
   ========================================================================== */

.cs-quote-block__mark,
.cs-quote-block__text,
.cs-quote-block__source {
  opacity: 0;
}

.cs-showcase-full__phone {
  opacity: 0;
}

/* CS2 stagger children + pie chart — start hidden */
.cs2-method,
.cs2-findings__quote,
.cs2-findings__list li,
.cs2-pill,
.cs2-arch__node,
.cs2-arch__connector,
.cs2-principle {
  opacity: 0;
}

/* ==========================================================================
   SECTION NAVIGATOR — Fixed bottom-left expandable panel
   ========================================================================== */

.section-nav {
  position: fixed;
  bottom: 1.5rem;
  left: 1.5rem;
  z-index: 100;
  font-family: var(--font-body);
}

.section-nav__toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  transition: all var(--duration-fast) var(--ease-smooth);
  width: 100%;
}

.section-nav__toggle:hover {
  color: var(--text-primary);
  border-color: rgba(201, 131, 78, 0.2);
}

.section-nav__current {
  flex: 1;
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 140px;
}

.section-nav__chevron {
  transition: transform var(--duration-fast) var(--ease-smooth);
  flex-shrink: 0;
}

.section-nav[data-expanded="true"] .section-nav__chevron {
  transform: rotate(180deg);
}

.section-nav__progress {
  font-family: monospace;
  font-size: 0.75rem;
  color: var(--accent);
  flex-shrink: 0;
  min-width: 2.5em;
  text-align: right;
}

.section-nav__list {
  list-style: none;
  margin: 0;
  padding: 0.5rem 0;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  margin-bottom: 0.5rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.3s var(--ease-smooth),
              opacity 0.2s var(--ease-smooth);
  pointer-events: none;
}

.section-nav[data-expanded="true"] .section-nav__list {
  max-height: 400px;
  opacity: 1;
  pointer-events: auto;
  overflow-y: auto;
}

.section-nav__item {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color var(--duration-fast),
              background var(--duration-fast);
  white-space: nowrap;
}

.section-nav__item:hover {
  color: var(--text-primary);
  background: rgba(201, 131, 78, 0.06);
}

.section-nav__item--active {
  color: var(--accent);
  font-weight: 600;
}


/* Reduced motion: show everything immediately */
@media (prefers-reduced-motion: reduce) {
  .cs-quote-block__mark,
  .cs-quote-block__text,
  .cs-quote-block__source,
  .cs-showcase-full__phone,
  .cs-hero__phone,
  .cs2-pie-chart,
  .cs2-method,
  .cs2-findings__quote,
  .cs2-findings__list li,
  .cs2-pill,
  .cs2-arch__node,
  .cs2-arch__connector,
  .cs2-principle {
    opacity: 1 !important;
    transform: none !important;
  }

  .cs2-pie-chart__donut {
    --pie-angle: 223.2deg !important;
  }
}


/* ==========================================================================
   RESPONSIVE
   ========================================================================== */

@media (max-width: 1024px) {
  .cs-context {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .cs-hero__phone-wrapper { max-width: 700px; }

  .cs-evolution {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }
}

@media (max-width: 768px) {
  .cs-nav { top: 1rem; left: 1rem; }
  .cs-nav__back span { display: none; }
  .cs-nav__back { padding: 0.6rem; }
  .cs-nav__theme { top: 1rem; right: 1rem; }

  .cs-hero { padding: 5rem 1.5rem 3rem; }
  .cs-hero__title { font-size: clamp(2.5rem, 12vw, 4rem); }
  .cs-hero__phone-wrapper { max-width: 520px; }
  .cs-hero__phone { transform: rotateX(15deg) scale(0.95); }
  .cs-hero__meta { flex-wrap: wrap; }
  .cs-hero__scroll { position: relative; bottom: auto; left: auto; transform: none; margin-top: var(--space-md); }

  .cs-block { padding: clamp(2rem, 4vh, 3rem) 0; }
  .cs-block__inner { padding: 0 var(--space-sm); }

  /* Findings stack to single column on tablet */
  .cs-finding,
  .cs-finding:nth-child(even) {
    grid-template-columns: 1fr;
    gap: var(--space-md);
    text-align: center;
  }

  .cs-finding__phone {
    max-width: 85%;
    margin: 0 auto;
  }

  /* Reset alternating order — show content first, phone second */
  .cs-finding .cs-finding__phone {
    order: 2;
  }
  .cs-finding .cs-finding__content {
    order: 1;
  }

  .cs-finding__content {
    align-items: center;
  }

  /* Evolution goes to single column */
  .cs-evolution {
    grid-template-columns: 1fr;
    gap: clamp(2rem, 4vw, 3rem);
  }

  .cs-evolution__phone {
    max-width: 85%;
    margin: 0 auto var(--space-md);
  }

  .cs-metrics {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .cs-kpis {
    grid-template-columns: 1fr;
  }

  .cs-showcase-full { padding: 0 var(--space-sm); }

  .cs-showcase-full__phone {
    max-width: 85%;
  }

  .cs-footer__next-card {
    grid-template-columns: 1fr;
  }

  .cs-footer__next-image {
    min-height: 200px;
  }

  .cs-footer__next-info {
    padding: var(--space-md);
  }

  .cs-context__details {
    grid-template-columns: 1fr 1fr;
  }

  .section-nav {
    bottom: 1rem;
    left: 1rem;
  }

  .section-nav__current {
    max-width: 100px;
  }
}

@media (max-width: 480px) {
  .cs-hero { padding: 4rem 1rem 2rem; }
  .cs-hero__meta { gap: 0.5rem; justify-content: center; }
  .cs-hero__phone-wrapper { max-width: 100%; }
  .cs-hero__phone { transform: rotateX(10deg) scale(0.96); }
  .cs-hero__tag { font-size: 0.65rem; padding: 0.25rem 0.6rem; }

  .cs-block__inner { padding: 0 0.75rem; }

  /* Findings: full-width, centered */
  .cs-finding__phone {
    max-width: 100%;
    margin: 0 auto;
    border-radius: 12px;
  }
  .cs-finding__phone img { border-radius: 12px; }

  .cs-evolution__phone { max-width: 100%; }

  /* Showcase: near edge-to-edge */
  .cs-showcase-full { padding: 0 0.75rem; }
  .cs-showcase-full__phone { max-width: 100%; }
  .cs-showcase-full__phone--hero { max-width: 100%; transform: none; }
  .cs-showcase-full__phone img { border-radius: 8px; }

  /* Ensure text below showcase images is visible */
  .cs-showcase-full__caption { margin-top: 0.75rem; }
  .cs-showcase-full__desc { font-size: 0.85rem; margin-top: 0.35rem; }

  .cs-footer__nav {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .cs-context__details { grid-template-columns: 1fr; }

  .cs-finding__callout {
    max-width: 100%;
  }

  .section-nav {
    bottom: 0.75rem;
    left: 0.75rem;
    right: 0.75rem;
  }

  .section-nav__toggle {
    font-size: 0.8rem;
  }

  .section-nav__current {
    max-width: 80px;
  }
}


/* ==========================================================================
   CS2: STATERA — Component Styles
   ========================================================================== */


/* ── Wider body text ─────────────────────────────────────────────────── */

.cs-body--wide {
  max-width: 800px;
}

.cs-body--centered {
  max-width: 650px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}


/* ── Key Impacts Cards ───────────────────────────────────────────────── */

/* ── Problem Statement ──────────────────────────────────────────────── */

.cs2-problem-statement {
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  border-left: 3px solid var(--accent);
  background: var(--bg-surface);
  border-radius: 0 12px 12px 0;
}

.cs2-problem-statement__label {
  display: block;
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: var(--space-sm);
}

.cs2-problem-statement__text {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 400;
  font-style: italic;
  color: var(--text-primary);
  line-height: 1.5;
}


/* ── Role & Collaboration Grid ───────────────────────────────────────── */

.cs2-role-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-subtle);
}

.cs2-role-grid__label {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.cs2-role-grid__text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.cs2-role-grid__text strong {
  color: var(--text-primary);
}


/* ── Compact Metadata Row ────────────────────────────────────────────── */

.cs2-meta-row {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-subtle);
}

.cs2-meta-row__item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  position: relative;
}

.cs2-meta-row__item:not(:last-child)::after {
  content: "";
  position: absolute;
  right: calc(var(--space-lg) / -2);
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--border-subtle);
}

.cs2-meta-row__label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.cs2-meta-row__value {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
}


/* ── CSS Pie Chart ───────────────────────────────────────────────────── */

.cs2-pie-chart {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(2rem, 5vw, 4rem);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  opacity: 0;
}

.cs2-pie-chart__visual {
  position: relative;
  width: 260px;
  height: 260px;
  flex-shrink: 0;
}

/* Puck thickness — warm shadow ring offset behind the donut */
.cs2-pie-chart__visual::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: rgba(140, 95, 50, 0.18);
  mask: radial-gradient(circle at center, transparent 54%, black 55%);
  -webkit-mask: radial-gradient(circle at center, transparent 54%, black 55%);
  transform: translateY(6px);
  filter: blur(2px);
}

/* Floating shadow beneath the puck */
.cs2-pie-chart__visual::after {
  content: '';
  position: absolute;
  bottom: -16px;
  left: 12%;
  right: 12%;
  height: 24px;
  background: radial-gradient(ellipse, rgba(0, 0, 0, 0.10) 0%, transparent 70%);
  z-index: -1;
}

.cs2-pie-chart__donut {
  --pie-angle: 0deg;
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: conic-gradient(var(--accent) 0deg var(--pie-angle), #B8B0A8 var(--pie-angle) 360deg);
  mask: radial-gradient(circle at center, transparent 55%, black 56%);
  -webkit-mask: radial-gradient(circle at center, transparent 55%, black 56%);
  filter: drop-shadow(0 4px 3px rgba(0, 0, 0, 0.07))
          drop-shadow(0 10px 12px rgba(0, 0, 0, 0.05));
}

[data-theme="dark"] .cs2-pie-chart__donut {
  background: conic-gradient(var(--accent) 0deg var(--pie-angle), #4A4540 var(--pie-angle) 360deg);
  filter: drop-shadow(0 4px 3px rgba(0, 0, 0, 0.15))
          drop-shadow(0 10px 12px rgba(0, 0, 0, 0.12));
}

[data-theme="dark"] .cs2-pie-chart__visual::before {
  background: rgba(100, 70, 30, 0.3);
}

[data-theme="dark"] .cs2-pie-chart__visual::after {
  background: radial-gradient(ellipse, rgba(0, 0, 0, 0.25) 0%, transparent 70%);
}

.cs2-pie-chart__center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

.cs2-pie-chart__center-value {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--accent);
  line-height: 1;
}

.cs2-pie-chart__center-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.cs2-pie-chart__legend {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.cs2-pie-chart__legend-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.cs2-pie-chart__legend-dot {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  flex-shrink: 0;
  margin-top: 3px;
}

.cs2-pie-chart__legend-dot--primary { background: var(--accent); }
.cs2-pie-chart__legend-dot--secondary { background: #B8B0A8; }

[data-theme="dark"] .cs2-pie-chart__legend-dot--secondary { background: #4A4540; }

.cs2-pie-chart__legend-value {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--text-primary);
  display: block;
  line-height: 1;
}

.cs2-pie-chart__legend-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 0.25rem;
}

.cs2-pie-chart__legend-sub {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}


/* ── Method Cards (2x2 Grid) ────────────────────────────────────────── */

.cs2-methods {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  max-width: 900px;
  margin: var(--space-md) auto 0;
}

.cs2-method {
  padding: var(--space-lg);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  transition: box-shadow var(--duration-fast) var(--ease-smooth),
              transform var(--duration-fast) var(--ease-smooth);
}

.cs2-method:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);
  transform: translateY(-2px);
}

.cs2-method__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(201, 131, 78, 0.12);
  border-radius: 14px;
  color: var(--accent);
  margin-bottom: var(--space-sm);
  box-shadow: 0 4px 12px rgba(201, 131, 78, 0.15);
}

.cs2-method__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.cs2-method__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}


/* ── Findings Comparison ─────────────────────────────────────────────── */

.cs2-findings {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-md);
  align-items: start;
}

.cs2-findings__col {
  min-width: 0;
  padding: var(--space-lg);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
}

.cs2-findings__header {
  padding: 0.85rem 1.5rem;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  text-align: center;
  margin-bottom: var(--space-md);
}

.cs2-findings__header--dark {
  background: var(--bg-contrast);
  color: #FFFFFF;
}

.cs2-findings__header--accent {
  background: var(--accent);
  color: #FFFFFF;
}

.cs2-findings__arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 0.75rem;
  color: var(--text-muted);
}

.cs2-findings__quotes {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.cs2-findings__quote {
  padding: 0;
  border: none;
}

.cs2-findings__quote p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  font-style: italic;
}

.cs2-findings__quote cite {
  display: block;
  font-size: 0.75rem;
  font-style: normal;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

.cs2-findings__list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.cs2-findings__list li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  padding-left: 1rem;
  position: relative;
}

.cs2-findings__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}


/* ── Problem Theme Pills ─────────────────────────────────────────────── */

.cs2-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-top: var(--space-2xl);
}

.cs2-pill {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--accent-deep);
  border: 1px solid rgba(201, 131, 78, 0.15);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  box-shadow: 0 1px 4px rgba(201, 131, 78, 0.1);
}


/* ── Yellow Callout Box ──────────────────────────────────────────────── */

.cs2-callout {
  background: #FEF3C7;
  border: 1px solid #F59E0B;
  border-radius: 16px;
  padding: var(--space-xl);
}

.cs2-callout__label {
  display: block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: #92400E;
  margin-bottom: var(--space-md);
}

.cs2-callout__text {
  font-size: 0.95rem;
  color: #78350F;
  line-height: 1.7;
  margin-bottom: var(--space-sm);
}

.cs2-callout__text strong {
  color: #451A03;
}

.cs2-callout__list {
  list-style: none;
  padding: 0;
  margin: var(--space-sm) 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.cs2-callout__list li {
  font-size: 0.9rem;
  color: #78350F;
  line-height: 1.6;
  padding-left: 1.25rem;
  position: relative;
}

.cs2-callout__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #F59E0B;
}

.cs2-callout__list li strong {
  color: #451A03;
}


/* ── Architecture Comparison ─────────────────────────────────────────── */

.cs2-arch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.cs2-arch__col {
  text-align: center;
}

.cs2-arch__badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
}

.cs2-arch__badge--before {
  background: rgba(239, 68, 68, 0.1);
  color: #EF4444;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.cs2-arch__badge--after {
  background: rgba(34, 197, 94, 0.1);
  color: #22C55E;
  border: 1px solid rgba(34, 197, 94, 0.2);
}

.cs2-arch__flow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.cs2-arch__node {
  padding: 0.75rem 1.25rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
  width: 100%;
  max-width: 280px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.cs2-arch__node--end {
  background: var(--bg-contrast);
  color: #FFFFFF;
  border-color: var(--border-light);
}

.cs2-arch__node--active {
  background: rgba(34, 197, 94, 0.08);
  border-color: rgba(34, 197, 94, 0.25);
  color: #22C55E;
}

.cs2-arch__connector {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.5rem 0;
}

.cs2-arch__connector::before {
  content: "";
  width: 1px;
  height: 20px;
  background: var(--border-light);
}

.cs2-arch__connector::after {
  content: "";
  width: 1px;
  height: 20px;
  background: var(--border-light);
}

.cs2-arch__connector--active::before,
.cs2-arch__connector--active::after {
  background: rgba(34, 197, 94, 0.4);
}

.cs2-arch__connector-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.5rem;
}


/* ── Current Flow Columns ────────────────────────────────────────────── */

.cs2-flow-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.cs2-flow-col {
  display: flex;
  flex-direction: column;
}

.cs2-flow-col__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  text-align: center;
}

.cs2-flow-col__desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  text-align: center;
  margin-bottom: var(--space-md);
}

.cs2-flow-col__image {
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: var(--space-md);
}

.cs2-flow-col__image img {
  width: 100%;
  height: auto;
  display: block;
}

.cs2-flow-col__image--placeholder {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cs2-flow-col__placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-muted);
  padding: var(--space-lg);
}

.cs2-flow-col__placeholder span {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.cs2-flow-col__steps {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: var(--space-md);
  width: 100%;
}

.cs2-flow-col__step {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.cs2-flow-col__step span {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-deep);
  border-radius: 50%;
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--accent);
  flex-shrink: 0;
}

.cs2-flow-col__gaps {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.cs2-flow-col__gap {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
  padding: 0.5rem 0.75rem;
  background: var(--bg-surface);
  border-radius: 8px;
  border: 1px solid var(--border-subtle);
}

.cs2-flow-col__gap span {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(239, 68, 68, 0.1);
  border-radius: 50%;
  font-size: 0.65rem;
  font-weight: 700;
  color: #EF4444;
  flex-shrink: 0;
}


/* ── Design Principles ───────────────────────────────────────────────── */

.cs2-principles {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-md);
  max-width: 1100px;
  margin: 0 auto;
}

.cs2-principle {
  text-align: center;
  padding: var(--space-lg) var(--space-sm);
}

.cs2-principle__num {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--accent);
  opacity: 0.3;
  margin-bottom: var(--space-xs);
}

.cs2-principle__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.cs2-principle__desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}


/* ── Before/After Comparison ─────────────────────────────────────────── */

.cs2-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.cs2-compare__side {
  display: flex;
  flex-direction: column;
}

.cs2-compare__badge {
  display: inline-block;
  align-self: flex-start;
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-md);
}

.cs2-compare__badge--before {
  background: rgba(239, 68, 68, 0.08);
  color: #EF4444;
  border: 1px solid rgba(239, 68, 68, 0.15);
}

.cs2-compare__badge--after {
  background: rgba(34, 197, 94, 0.08);
  color: #22C55E;
  border: 1px solid rgba(34, 197, 94, 0.15);
}

.cs2-compare__image {
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: var(--space-md);
  border: 1px solid var(--border-subtle);
}

.cs2-compare__image img {
  width: 100%;
  height: auto;
  display: block;
}

.cs2-compare__points {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.cs2-compare__points li {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
  padding-left: 1rem;
  position: relative;
}

.cs2-compare__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

/* Stacked variant — full-width before/after */
.cs2-compare--stacked {
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

.cs2-compare--stacked .cs2-compare__image img {
  border-radius: 16px;
}


/* ── Status Legend ────────────────────────────────────────────────────── */

.cs2-status-legend {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  margin-top: var(--space-lg);
  flex-wrap: wrap;
}

.cs2-status-legend__item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.cs2-status-legend__item strong {
  font-weight: 700;
  letter-spacing: 0.05em;
}

.cs2-status-legend__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.cs2-status-legend__item--losing .cs2-status-legend__dot { background: #EF4444; }
.cs2-status-legend__item--losing strong { color: #EF4444; }

.cs2-status-legend__item--scaling .cs2-status-legend__dot { background: #22C55E; }
.cs2-status-legend__item--scaling strong { color: #22C55E; }

.cs2-status-legend__item--profitable .cs2-status-legend__dot { background: #3B82F6; }
.cs2-status-legend__item--profitable strong { color: #3B82F6; }

.cs2-status-legend__item--paused .cs2-status-legend__dot { background: #8B8FA3; }
.cs2-status-legend__item--paused strong { color: #8B8FA3; }


/* ── Wizard Steps ────────────────────────────────────────────────────── */

.cs2-wizard-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-md);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.cs2-wizard-step {
  text-align: center;
  padding: var(--space-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
}

.cs2-wizard-step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--accent);
  color: #FFFFFF;
  border-radius: 50%;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.cs2-wizard-step__title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.cs2-wizard-step__desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
}




/* ── Adoption Metrics (below Impact) ─────────────────────────────────── */

/* ── Outcome Section ────────────────────────────────────────────────── */

.cs2-outcome__honest {
  max-width: 700px;
  margin: 0 auto var(--space-xl);
  text-align: center;
}

.cs2-outcome__honest p {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.cs2-outcome__honest p:last-child {
  margin-bottom: 0;
  font-style: italic;
  color: rgba(255, 255, 255, 0.5);
}

.cs2-validated__title {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: var(--space-lg);
  text-align: center;
}

.cs2-validated__items {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-width: 650px;
  margin: 0 auto;
}

.cs2-validated__item {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.cs2-validated__icon {
  color: var(--accent);
  font-size: 1.2rem;
  flex-shrink: 0;
  margin-top: 0.15rem;
}

.cs2-validated__item strong {
  display: block;
  font-size: 0.95rem;
  color: #fff;
  margin-bottom: 0.25rem;
}

.cs2-validated__item p {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
  margin: 0;
}


/* ── Constraints ───────────────────────────────────────────────────── */

.cs2-constraints {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  max-width: 700px;
  margin: 0 auto;
}

.cs2-constraint {
  padding: var(--space-md) var(--space-lg);
  border-left: 2px solid var(--text-muted);
  background: var(--bg-surface);
  border-radius: 0 10px 10px 0;
}

.cs2-constraint__title {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.cs2-constraint__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}


/* ── Learnings Grid ──────────────────────────────────────────────────── */

.cs2-learnings {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
}

.cs2-learnings__heading {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
}

.cs2-learning {
  margin-bottom: var(--space-lg);
}

.cs2-learning__title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.cs2-learning__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}


/* ── Dark theme: stronger icon bg ────────────────────────────────────── */

[data-theme="dark"] .cs2-method__icon {
  background: rgba(201, 131, 78, 0.15);
}



/* ==========================================================================
   CS2: RESPONSIVE
   ========================================================================== */

@media (max-width: 1024px) {
  .cs2-principles {
    grid-template-columns: repeat(3, 1fr);
  }

  .cs2-flow-cols {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
}

@media (max-width: 768px) {

  .cs2-meta-row {
    flex-wrap: wrap;
    gap: var(--space-md);
  }

  .cs2-meta-row__item::after {
    display: none;
  }

  .cs2-role-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .cs2-pie-chart {
    flex-direction: column;
  }

  .cs2-pie-chart__visual {
    width: 200px;
    height: 200px;
  }

  .cs2-methods {
    grid-template-columns: 1fr;
  }

  .cs2-findings {
    grid-template-columns: 1fr;
  }

  .cs2-findings__arrow {
    transform: rotate(90deg);
    padding: 0;
  }

  .cs2-arch {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .cs2-principles {
    grid-template-columns: repeat(2, 1fr);
  }

  .cs2-compare {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .cs2-wizard-steps {
    grid-template-columns: 1fr;
  }


  .cs2-learnings {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .cs2-status-legend {
    gap: var(--space-sm);
  }
}

@media (max-width: 480px) {
  .cs2-principles {
    grid-template-columns: 1fr;
  }
}


/* ==========================================================================
   PROJECT FEATURE (side projects page)
   ========================================================================== */

.project-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
  margin-bottom: var(--space-xl);
}

.project-feature--reverse {
  direction: rtl;
}

.project-feature--reverse > * {
  direction: ltr;
}

.project-feature__name {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  font-weight: 400;
  margin-bottom: var(--space-sm);
}

.project-feature__text p {
  font-size: clamp(0.95rem, 1.2vw, 1.05rem);
  color: var(--text-secondary);
  line-height: 1.7;
}

.project-feature__screens {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
}

.project-feature__screens img {
  width: 180px;
  height: auto;
  border-radius: 16px;
  border: 1px solid var(--border-light);
  object-fit: cover;
}

/* Footer back link for project pages */
.cs-footer {
  padding: var(--space-xl) 0 var(--space-lg);
  text-align: center;
}

.cs-footer__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.cs-footer__back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.cs-footer__back-link:hover {
  color: var(--accent);
}

@media (max-width: 768px) {
  .project-feature {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .project-feature--reverse {
    direction: ltr;
  }

  .project-feature__screens {
    justify-content: center;
  }

  .project-feature__screens img {
    width: 150px;
  }
}

@media (max-width: 480px) {
  .project-feature__screens img {
    width: 130px;
  }
}