/* ================================================================
   CASE STUDY — SHARED STYLESHEET
   Merged from all 6 case study files.
   Source files: cs-journey, cs-shapemeup, cs-skateboard,
                 cs-botconference, cs-esa, cs-champfitness
   ================================================================ */

:root {
  --bg: #080809;
  --surface: #0f0f12;
  --surface2: #161619;
  --surface3: #1e1e23;
  --border: #242428;
  --coral: #ff5533;
  --lime: #c8fa64;
  --amber: #ffbe0b;
  --text: #f0ebe3;
  --text2: #a8a8b3;
  --text3: #5c5c68;
  --r: 14px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Plus Jakarta Sans", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: var(--coral);
  text-decoration: none;
}

/* ──  ── */
.nav {
  padding: 18px 48px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 24px;
  background: rgba(8, 8, 9, 0.9);
  backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 50;
}
.nav-logo {
  font-family: "Syne", sans-serif;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.02em;
  color: var(--text);
}
.nav-logo span {
  color: var(--coral);
}
.nav-back {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--coral);
}
.nav-back:hover {
  color: var(--text3);
}
.nav-tag {
  margin-left: auto;
  padding: 5px 14px;
  border-radius: 50px;
  border: 1px solid var(--border);
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text3);
}

/* ── HERO ── */
.hero {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 64px;
  align-items: center;
  padding: 72px 48px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(255, 85, 51, 0.09) 0%,
    transparent 70%
  );
}
.breadcrumb {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--text3);
  margin-bottom: 20px;
  display: flex;
  gap: 8px;
}
.breadcrumb span {
  color: var(--coral);
}
.hero-h1 {
  font-family: "Syne", sans-serif;
  font-size: clamp(36px, 4.5vw, 58px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 18px;
}
.hero-desc {
  font-size: 15px;
  color: var(--text2);
  line-height: 1.78;
  margin-bottom: 32px;
  font-weight: 300;
  max-width: 520px;
}
.meta-row {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}
.meta-item .ml {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 5px;
}
.meta-item .mv {
  font-size: 13.5px;
  font-weight: 500;
}
.hero-img {
  border-radius: var(--r);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface2);
  position: relative;
  z-index: 1;
}
.hero-img img {
  width: 100%;
  display: block;
  max-height: 380px;
  object-fit: contain;
  object-position: top;
}

/* ── SECTION ── */
.section {
  padding: 64px 48px;
  border-bottom: 1px solid var(--border);
}
.sec-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--coral);
  margin-bottom: 10px;
}
.sec-h2 {
  font-family: "Syne", sans-serif;
  font-size: clamp(24px, 2.8vw, 36px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 32px;
}

/* ── PROBLEM / SOLUTION ── */
.ps-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.ps-box {
  padding: 28px;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
}
.ps-box.prob {
  border-top: 2px solid var(--coral);
}
.ps-box.sol {
  border-top: 2px solid var(--lime);
}
.ps-lbl {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.ps-box.prob .ps-lbl {
  color: var(--coral);
}
.ps-box.sol .ps-lbl {
  color: var(--lime);
}
.ps-txt {
  font-size: 14px;
  color: var(--text2);
  line-height: 1.75;
  font-weight: 300;
}

/* ── POPUP CARDS ── */
.popup-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 16px;
}
.popup-card {
  padding: 32px 28px;
  border-radius: var(--r);
  background: var(--surface);
  border: 1px solid var(--border);
  cursor: pointer;
  transition:
    transform 0.22s,
    border-color 0.22s,
    box-shadow 0.22s;
  position: relative;
  overflow: hidden;
}
.popup-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--coral);
  transform: scaleX(0);
  transition: transform 0.22s;
  transform-origin: left;
}
.popup-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 85, 51, 0.4);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
}
.popup-card:hover::before {
  transform: scaleX(1);
}
.pc-icon {
  font-size: 32px;
  margin-bottom: 16px;
  display: block;
}
.pc-num {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 8px;
}
.pc-title {
  font-family: "Syne", sans-serif;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.pc-sub {
  font-size: 13px;
  color: var(--text2);
  line-height: 1.65;
  margin-bottom: 20px;
  font-weight: 300;
}
.pc-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--coral);
}

/* ── OUTCOMES ── */
.outcome-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.outcome-box {
  padding: 28px;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  text-align: center;
}
.outcome-n {
  font-family: "Syne", sans-serif;
  font-size: 40px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--coral), var(--amber));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 6px;
}
.outcome-l {
  font-size: 12px;
  color: var(--text3);
  line-height: 1.5;
}

/* ── MODAL ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.82);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: 24px;
  overflow-y: auto;
}
.modal-overlay.open {
  display: flex;
}
.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  max-width: 900px;
  width: 100%;
  margin: auto;
}
.modal-head {
  padding: 36px 40px 28px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}
.modal-tlbl {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--coral);
  margin-bottom: 8px;
}
.modal-title {
  font-family: "Syne", sans-serif;
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.modal-close {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text2);
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition:
    border-color 0.18s,
    color 0.18s;
}
.modal-close:hover {
  border-color: var(--coral);
  color: var(--coral);
}
.modal-body {
  padding: 36px 40px;
}
.modal-img {
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface2);
  margin-bottom: 28px;
}
.modal-img img {
  width: 100%;
  display: block;
  max-height: 480px;
  object-fit: contain;
  object-position: top;
}
.modal-img-caption {
  padding: 10px 16px;
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text3);
  border-top: 1px solid var(--border);
}
.modal-h3 {
  font-family: "Syne", sans-serif;
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  margin-top: 28px;
  color: var(--text);
}
.modal-h3:first-child {
  margin-top: 0;
}
.modal-p {
  font-size: 14px;
  color: var(--text2);
  line-height: 1.78;
  font-weight: 300;
  margin-bottom: 14px;
}
.modal-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 24px;
}
.modal-2col-item {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface2);
}
.modal-2col-item img {
  width: 100%;
  display: block;
  max-height: 280px;
  object-fit: contain;
  object-position: top;
}
.modal-2col-caption {
  padding: 8px 12px;
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text3);
  border-top: 1px solid var(--border);
}

/* ── PERSONA ── */
.persona-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}
.persona-card {
  padding: 22px;
  border-radius: 10px;
  background: var(--surface2);
  border: 1px solid var(--border);
}
.persona-type {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--coral);
  margin-bottom: 6px;
}
.persona-name {
  font-family: "Syne", sans-serif;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
}
.persona-detail {
  font-size: 12.5px;
  color: var(--text2);
  line-height: 1.7;
  font-weight: 300;
}
.pain-item {
  font-size: 12px;
  color: var(--text2);
  padding: 4px 0;
  border-bottom: 1px solid var(--border);
  line-height: 1.55;
}
.pain-item:last-child {
  border: none;
}

/* ── SCROLL / TILES ── */
.section-scroll {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 12px;
  margin-bottom: 24px;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.section-scroll::-webkit-scrollbar {
  height: 4px;
}
.section-scroll::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}
.section-tile {
  flex-shrink: 0;
  padding: 16px 20px;
  border-radius: 8px;
  background: var(--surface2);
  border: 1px solid var(--border);
  min-width: 160px;
}
.st-icon {
  font-size: 20px;
  margin-bottom: 8px;
}
.st-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 4px;
}
.st-val {
  font-family: "Syne", sans-serif;
  font-size: 13px;
  font-weight: 700;
}

/* ── STEP FLOW ── */
.step-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 28px;
}
.step-box {
  padding: 18px 14px;
  border-radius: 8px;
  background: var(--surface2);
  border: 1px solid var(--border);
  text-align: center;
  position: relative;
}
.step-box::after {
  content: "→";
  position: absolute;
  right: -8px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text3);
  font-size: 12px;
  z-index: 2;
}
.step-box:last-child::after {
  display: none;
}
.step-n {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--coral);
  margin-bottom: 6px;
}
.step-t {
  font-family: "Syne", sans-serif;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 4px;
}
.step-s {
  font-size: 11px;
  color: var(--text3);
  line-height: 1.5;
}

/* ── ANNOTATION ── */
.annotation-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}
.annotation-box {
  padding: 18px 20px;
  border-radius: 8px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--coral);
}
.ann-screen {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--coral);
  margin-bottom: 5px;
}
.ann-title {
  font-family: "Syne", sans-serif;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 6px;
}
.ann-desc {
  font-size: 12.5px;
  color: var(--text2);
  line-height: 1.65;
  font-weight: 300;
}

/* ── DECISION ── */
.decision-block {
  padding: 20px 24px;
  border-radius: 8px;
  background: rgba(255, 85, 51, 0.06);
  border: 1px solid rgba(255, 85, 51, 0.2);
  margin-bottom: 18px;
}
.decision-lbl {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--coral);
  margin-bottom: 6px;
}
.decision-txt {
  font-size: 13.5px;
  color: var(--text2);
  line-height: 1.7;
  font-weight: 300;
}

/* ── SCREEN ANNOTATED ── */
.screen-annotated {
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface2);
  margin-bottom: 20px;
}
.screen-annotated img {
  width: 100%;
  display: block;
  max-height: 500px;
  object-fit: contain;
  object-position: top;
}
.screen-legend {
  padding: 16px 20px;
  background: var(--surface2);
  border-top: 1px solid var(--border);
}
.screen-legend-title {
  font-family: "Syne", sans-serif;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 8px;
}
.sll-item {
  font-size: 12px;
  color: var(--text2);
  line-height: 1.65;
  font-weight: 300;
  padding: 3px 0;
}
.sll-item strong {
  color: var(--coral);
}

/* ── FOOTER ── */
.footer {
  padding: 36px 48px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}
.foot-logo {
  font-family: "Syne", sans-serif;
  font-size: 16px;
  font-weight: 800;
}
.foot-logo span {
  color: var(--coral);
}
.foot-copy {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  color: var(--text3);
}
.nav-links-foot {
  display: flex;
  gap: 20px;
}
.nav-links-foot a {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--text3);
}
.nav-links-foot a:hover {
  color: var(--coral);
}

/* ── UTILITIES ── */
.caption-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 6px;
}
.text-sm {
  font-size: 14px;
  color: var(--text2);
  margin-bottom: 8px;
  font-weight: 300;
}

/* ── ADDITIONAL ── */
.modal-tag {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--coral);
  margin-bottom: 8px;
}
.modal-tag-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.mtag {
  padding: 5px 12px;
  border-radius: 6px;
  background: var(--surface2);
  border: 1px solid var(--border);
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  color: var(--text3);
  letter-spacing: 0.04em;
}
.wf-scroll {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 12px;
  margin-bottom: 24px;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.wf-scroll::-webkit-scrollbar {
  height: 4px;
}
.wf-scroll::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}
.wf-thumb {
  flex-shrink: 0;
  width: 160px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface2);
}
.wf-thumb img {
  width: 100%;
  display: block;
  height: 280px;
  object-fit: cover;
  object-position: top;
}
.wf-thumb-label {
  padding: 7px 10px;
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text3);
  border-top: 1px solid var(--border);
}
.persona-pain {
  margin-top: 12px;
}
.persona-pain-lbl {
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 6px;
}
.tenet-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 24px;
}
.tenet-card {
  padding: 20px;
  border-radius: 8px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--coral);
}
.tenet-n {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--coral);
  margin-bottom: 6px;
}
.tenet-title {
  font-family: "Syne", sans-serif;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 6px;
}
.tenet-desc {
  font-size: 12.5px;
  color: var(--text2);
  line-height: 1.65;
  font-weight: 300;
}
.modal-tag-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--coral);
  margin-bottom: 8px;
}

/* ── RESPONSIVE ── */
@media (max-width: 860px) {
  .nav {
    padding: 14px 20px;
  }
  .hero {
    grid-template-columns: 1fr;
    padding: 40px 20px;
    gap: 32px;
  }
  .hero-img {
    display: none;
  }
  .section {
    padding: 48px 20px;
  }
  .ps-grid,
  .popup-grid,
  .modal-2col,
  .persona-grid {
    grid-template-columns: 1fr;
  }
  .outcome-grid {
    grid-template-columns: 1fr 1fr;
  }
  .modal-head,
  .modal-body {
    padding: 24px 20px;
  }
  .footer {
    padding: 24px 20px;
  }
}
@media (max-width: 860px) {
  .step-flow {
    grid-template-columns: 1fr 1fr;
  }
  .annotation-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 860px) {
  .nav {
    padding: 14px 20px;
  }
  .hero {
    grid-template-columns: 1fr;
    padding: 40px 20px;
    gap: 32px;
  }
  .hero-img {
    display: none;
  }
  .section {
    padding: 48px 20px;
  }
  .ps-grid {
    grid-template-columns: 1fr;
  }
  .popup-grid {
    grid-template-columns: 1fr;
  }
  .outcome-grid {
    grid-template-columns: 1fr 1fr;
  }
  .modal-head {
    padding: 24px 20px 20px;
  }
  .modal-body {
    padding: 24px 20px;
  }
  .modal-2col {
    grid-template-columns: 1fr;
  }
  .persona-grid {
    grid-template-columns: 1fr;
  }
  .footer {
    padding: 24px 20px;
  }
}
@media (max-width: 860px) {
  .nav {
    padding: 14px 20px;
  }
  .hero {
    grid-template-columns: 1fr;
    padding: 40px 20px;
    gap: 32px;
  }
  .hero-img {
    display: none;
  }
  .section {
    padding: 48px 20px;
  }
  .ps-grid,
  .popup-grid,
  .tenet-grid,
  .persona-grid {
    grid-template-columns: 1fr;
  }
  .outcome-grid {
    grid-template-columns: 1fr 1fr;
  }
  .modal-head,
  .modal-body {
    padding: 24px 20px;
  }
  .footer {
    padding: 24px 20px;
  }
}
@media (max-width: 860px) {
  .step-flow {
    grid-template-columns: 1fr 1fr;
  }
  .annotation-grid,
  .tenet-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 860px) {
  .nav {
    padding: 14px 20px;
  }
  .hero {
    grid-template-columns: 1fr;
    padding: 40px 20px;
    gap: 32px;
  }
  .hero-img {
    display: none;
  }
  .section {
    padding: 48px 20px;
  }
  .ps-grid,
  .popup-grid,
  .modal-2col {
    grid-template-columns: 1fr;
  }
  .outcome-grid {
    grid-template-columns: 1fr 1fr;
  }
  .modal-head,
  .modal-body {
    padding: 24px 20px;
  }
  .footer {
    padding: 24px 20px;
  }
}