/* ===========================
   Case Study Page
   mobile-first, BEM
   =========================== */

.page-case .case {
  width: 100%;
  max-width: 100%;
}

/* ---- Title row + Back button ---- */

.case__title-row {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
  position: relative;
}

@media (min-width: 769px) {
  .case__title-row {
    flex-direction: row;
    align-items: center;
    gap: 0;
  }
}

.case__back-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background-color: rgba(23, 22, 36, 0.06);
  border-radius: 0.75rem;
  text-decoration: none;
  color: var(--color-text);
  font-family: var(--font-secondary);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.2;
  transition: opacity var(--transition-base);
  align-self: flex-start;
}

.case__back-btn-text {
  display: inline;
}

@media (min-width: 769px) {
  .case__back-btn {
    position: absolute;
    left: -4rem;
    top: 50%;
    transform: translateY(-50%);
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    gap: 0;
  }

  .case__back-btn-text {
    display: none;
  }
}

.case__back-btn:hover {
  opacity: 0.6;
}

.case__back-btn:focus-visible {
  outline: 2px solid var(--color-text);
  outline-offset: 2px;
  border-radius: 0.75rem;
}

.case__back-btn svg {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

/* ---- Hero ---- */

.case__hero {
  width: 100%;
  padding: 0;
  margin-bottom: 0;
  box-sizing: border-box;
}

.case__hero picture {
  display: block;
  width: 100%;
}

.case__cover {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 0;
  object-fit: cover;
}

/* ---- Content wrapper ---- */

.case__content {
  padding: 0 16px;
  max-width: 50rem; /* 800px */
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 80px;
}

@media (min-width: 769px) {
  .case__content {
    padding: 0;
    gap: 5rem;
  }
}

@media (min-width: 769px) {
  .case__content {
    padding: 0;
  }
}

/* ---- Case title ---- */

.case__title {
  font-family: var(--font-secondary);
  font-weight: 700;
  font-size: 1.5rem; /* 24px mobile */
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin: 0;
}

@media (min-width: 769px) {
  .case__title {
    font-size: 2rem; /* 32px desktop */
    letter-spacing: -0.0175em;
  }
}

/* ---- Section ---- */

.case__section {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

@media (min-width: 769px) {
  .case__section {
    gap: 2rem;
  }
}

/* ---- Heading ---- */

.case__heading {
  font-family: var(--font-secondary);
  font-weight: 700;
  font-size: 24px;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin: 0;
}

@media (min-width: 769px) {
  .case__heading {
    font-size: 1.5rem;
  }
}

/* ---- Body text ---- */

.case__text {
  font-family: var(--font-secondary);
  font-weight: 400;
  font-size: 1rem; /* 16px */
  line-height: 1.6;
  color: var(--color-navy-88);
  margin: 0;
}

/* ---- Sub-heading label ---- */

.case__subheading {
  font-family: var(--font-secondary);
  font-weight: 700;
  font-size: 1.125rem; /* 18px */
  line-height: 1.2;
  color: var(--color-text);
  margin: 0;
}

.case__data-block {
  display: flex;
  flex-direction: column;
  gap: 12px; /* Figma: от подзаголовка до плашек */
}

/* ---- Roles list ---- */

.case__roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem; /* 12px */
}

.case__roles li {
  font-family: var(--font-secondary);
  font-weight: 400;
  font-size: 1rem; /* 16px */
  line-height: 1.3;
  color: var(--color-text);
  padding: 0 0.0625rem; /* 0 1px per Figma */
}

/* ---- Goals ordered list ---- */

.case__goals {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
  counter-reset: goals-counter;
}

@media (min-width: 769px) {
  .case__goals {
    gap: 0.5rem;
  }
}

.case__goals li {
  counter-increment: goals-counter;
  display: block;
  font-family: var(--font-secondary);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-navy-88);
}

.case__goals li::before {
  display: none;
}

.case__goals li strong {
  white-space: nowrap;
  font-weight: 600;
}

@media (min-width: 769px) {
  .case__goals li {
    display: flex;
    align-items: flex-start;
    gap: 0.375rem;
    font-size: 1rem;
  }

  .case__goals li::before {
    display: inline;
    content: counter(goals-counter) ".";
    flex-shrink: 0;
    color: var(--color-navy-88);
  }
}

/* ---- Results ---- */

.case__results {
  display: flex;
  flex-direction: column;
  gap: 0.75rem; /* 12px */
}

.case__results-row {
  display: flex;
  flex-direction: column;
  gap: 0.75rem; /* 12px */
}

@media (min-width: 769px) {
  .case__results-row {
    flex-direction: row;
  }
}

.case__result-item {
  display: flex;
  flex-direction: column;
  gap: 1rem; /* 16px */
  padding: 1rem; /* 16px */
  background-color: #F6F6F6;
  border-radius: 1rem; /* 16px */
  flex: 1;
}

.case__result-num {
  font-family: var(--font-secondary);
  font-weight: 500;
  font-size: 1.25rem; /* 20px */
  line-height: 1.19;
  letter-spacing: -0.02em;
  color: #ADACBA;
}

.case__result-text {
  font-family: var(--font-secondary);
  font-weight: 600;
  font-size: 1.125rem; /* 18px */
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: #171624;
  margin: 0;
}

.case__result-text--light {
  font-weight: 500;
}

/* ---- Bullet list ---- */

.case__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  counter-reset: list-counter;
}

.case__list li {
  counter-increment: list-counter;
  display: flex;
  gap: 0.375rem;
  font-family: var(--font-secondary);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-navy-88);
}

.case__list li::before {
  content: counter(list-counter) ".";
  flex-shrink: 0;
  color: var(--color-navy-88);
}

/* ---- Data / Feedback cards ---- */

.case__data-cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.625rem; /* 10px */
}

.case__data-card {
  display: flex;
  flex-direction: column;
  gap: 1rem; /* 16px */
  padding: 1rem; /* 16px */
  background-color: #F6F6F6;
  border-radius: 1rem;
  font-family: var(--font-secondary);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.4;
  color: var(--color-navy-88);
}

.case__data-num {
  font-family: var(--font-secondary);
  font-weight: 500;
  font-size: 1.25rem; /* 20px */
  line-height: 1.19;
  letter-spacing: -0.02em;
  color: #ADACBA;
}

/* ---- Figure / Image ---- */

.case__figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem; /* 8px */
}

.case__figure picture {
  display: block;
}

.case__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 0.875rem;
}

.case__figure--mock img {
  border-radius: 1rem;
  border: 1px solid var(--color-border);
}

.case__figure--mobile-only {
  display: block;
}

@media (min-width: 769px) {
  .case__figure--mobile-only {
    display: none;
  }
}

/* ---- Figure hover: лёгкое «подрагивание» карточки (без пёстрых эффектов) ---- */
.case__content .case__figure {
  transform-origin: center center;
  transition: transform 0.35s ease;
}

@keyframes case-figure-wiggle {
  0% {
    transform: translate3d(0, 0, 0) rotate(0deg);
  }
  20% {
    transform: translate3d(0, -2px, 0) rotate(-0.38deg);
  }
  40% {
    transform: translate3d(0, -1px, 0) rotate(0.32deg);
  }
  60% {
    transform: translate3d(0, -2px, 0) rotate(-0.18deg);
  }
  80%,
  100% {
    transform: translate3d(0, -2px, 0) rotate(0deg);
  }
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .case__content .case__figure:hover,
  .case__content .case__figure:focus-within {
    animation: case-figure-wiggle 0.55s ease-out forwards;
  }
}

/* ---- Image caption ---- */

.case__caption {
  font-family: var(--font-secondary);
  font-weight: 500;
  font-size: 0.875rem; /* 14px */
  line-height: 1.3;
  color: var(--color-navy-88);
  padding: 0 0.25rem;
}

/* ---- Hypothesis blocks ---- */

.case__hypothesis {
  display: flex;
  flex-direction: column;
  gap: 0.75rem; /* 12px */
}

.case__hypothesis-title {
  font-family: var(--font-secondary);
  font-weight: 600;
  font-size: 1.125rem; /* 18px */
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin: 0;
}

/* ---- Prioritization table ---- */

.case__table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: 0.75rem;
}

.case__table {
  width: 100%;
  min-width: 36rem; /* prevent collapse on mobile */
  border-collapse: separate;
  border-spacing: 0;
  font-family: var(--font-secondary);
  font-size: 0.875rem; /* 14px */
  line-height: 1.2;
}

.case__table thead tr th {
  padding: 0.875rem 0.75rem; /* 14px 12px */
  background-color: #000000;
  color: #FFFFFF;
  font-weight: 400;
  font-size: 0.75rem; /* 12px */
  text-align: left;
  white-space: nowrap;
}

.case__table thead tr th:first-child {
  border-radius: 0.75rem 0 0 0;
}

.case__table thead tr th:last-child {
  border-radius: 0 0.75rem 0 0;
}

.case__table tbody tr td {
  padding: 0.875rem 0.75rem;
  background-color: #F8F8F8;
  color: var(--color-text);
  font-weight: 400;
  font-size: 0.875rem;
  border: 1px solid #E6E6E7;
  border-top: none;
  border-right: none;
}

.case__table tbody tr td:first-child {
  border-left: 1px solid #E6E6E7;
}

.case__table tbody tr td:last-child {
  border-right: 1px solid #E6E6E7;
}

.case__table tbody tr:last-child td:first-child {
  border-radius: 0 0 0 0.75rem;
}

.case__table tbody tr:last-child td:last-child {
  border-radius: 0 0 0.75rem 0;
}

.case__table tbody tr:last-child td {
  border-bottom: 1px solid #E6E6E7;
}

/* ---- Scoping card ---- */

.case__scoping-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem;
  background-color: #F6F6F6;
  border-radius: 1rem;
}

.case__scoping-label {
  font-family: var(--font-secondary);
  font-weight: 500;
  font-size: 0.875rem;
  line-height: 1.2;
  color: #FF3B30;
}

.case__scoping-text {
  font-family: var(--font-secondary);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.3;
  color: var(--color-text);
  margin: 0;
}

/* ---- HI-FI sub-sections ---- */

.case__hifi-sub {
  display: flex;
  flex-direction: column;
  gap: 1.5rem; /* 24px */
}

.case__hifi-title {
  font-family: var(--font-secondary);
  font-weight: 600;
  font-size: 1.25rem; /* 20px */
  line-height: 1.3;
  color: var(--color-text);
  margin: 0;
}

.case__hifi-sub + .case__hifi-sub {
  margin-top: 1rem; /* 48px total (32px gap + 16px margin) */
}

/* ---- A/B test result cards ---- */

.case__ab-results {
  display: flex;
  flex-direction: column;
  gap: 0.75rem; /* 12px */
}

.case__ab-row {
  display: flex;
  flex-direction: column;
  gap: 0.75rem; /* 12px */
}

@media (min-width: 769px) {
  .case__ab-row {
    flex-direction: row;
    gap: 0.625rem; /* 10px */
  }
}

.case__ab-card {
  display: flex;
  flex-direction: column;
  gap: 1.25rem; /* 20px */
  padding: 1.25rem; /* 20px */
  border-radius: 1rem; /* 16px */
  flex: 1;
}

.case__ab-card--green-light {
  background-color: rgba(114, 204, 42, 0.1);
}

.case__ab-card--green {
  background-color: #F1FAEA;
}

.case__ab-card--orange {
  background-color: rgba(255, 154, 0, 0.1);
}

.case__ab-num {
  font-family: var(--font-secondary);
  font-weight: 400;
  font-size: 1rem; /* 16px */
  line-height: 1.2;
}

.case__ab-num--green {
  color: #72CC2A;
}

.case__ab-num--orange {
  color: #FF9A00;
}

.case__ab-text {
  font-family: var(--font-secondary);
  font-weight: 400;
  font-size: 1rem; /* 16px */
  line-height: 1.3;
  color: #171624;
  margin: 0;
}

/* ---- Insight blocks ---- */

.case__insight-block {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.case__insight-label {
  font-family: var(--font-secondary);
  font-weight: 500;
  font-size: 1.125rem; /* 18px */
  line-height: 1.3;
  color: var(--color-text);
  margin: 0;
}

/* ---- Final results (all green) ---- */

.case__final-results {
  display: flex;
  flex-direction: column;
  gap: 0.625rem; /* 10px */
}

.case__final-row {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

@media (min-width: 769px) {
  .case__final-row {
    flex-direction: row;
    flex: 1;
    gap: 0.625rem;
  }

  .case__final-row .case__final-card {
    flex: 1;
  }

  .case__final-card--wide {
    flex: 1 1 100%;
  }
}

.case__final-card {
  display: flex;
  flex-direction: column;
  gap: 1.25rem; /* 20px */
  padding: 1.25rem; /* 20px */
  border-radius: 1rem; /* 16px */
  flex: 1;
}

.case__final-card--green-light {
  background-color: rgba(114, 204, 42, 0.1);
}

.case__final-card--green {
  background-color: #F1FAEA;
}

.case__final-num {
  font-family: var(--font-secondary);
  font-weight: 400;
  font-size: 1rem; /* 16px */
  line-height: 1.2;
  color: #72CC2A;
}

.case__final-text {
  font-family: var(--font-secondary);
  font-weight: 400;
  font-size: 1rem; /* 16px */
  line-height: 1.3;
  color: #171624;
  margin: 0;
}

/* ---- My role list ---- */

.case__role-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  counter-reset: role-counter;
}

.case__role-list li {
  counter-increment: role-counter;
  display: flex;
  gap: 0.375rem;
  font-family: var(--font-secondary);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-navy-88);
}

.case__role-list li::before {
  content: counter(role-counter) ".";
  flex-shrink: 0;
  color: var(--color-navy-88);
}

/* ---- Thanks + navigation ---- */

.case__thanks {
  max-width: 50rem;
  margin: 5rem auto 0;
  padding: 0 1rem 5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

@media (min-width: 769px) {
  .case__thanks {
    padding: 0 0 5rem;
  }
}

.case__thanks-title {
  font-family: var(--font-secondary);
  font-weight: 500;
  font-size: 1.5rem; /* 24px */
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin: 0;
}

.case__nav-buttons {
  display: flex;
  gap: 0.75rem;
  flex-direction: column;
}

@media (min-width: 769px) {
  .case__nav-buttons {
    flex-direction: row;
  }
}

.case__nav-btn {
  display: flex;
  align-items: center;
  gap: 0.625rem; /* 10px */
  padding: 0.875rem 1.25rem; /* 14px 20px */
  border-radius: 0.75rem;
  font-family: var(--font-secondary);
  font-weight: 400;
  font-size: 1.125rem; /* 18px */
  line-height: 1.2;
  text-decoration: none;
  transition: opacity var(--transition-base);
}

.case__nav-btn:hover {
  opacity: 0.75;
}

.case__nav-btn:focus-visible {
  outline: 2px solid var(--color-text);
  outline-offset: 2px;
}

.case__nav-btn--back {
  background-color: rgba(23, 22, 36, 0.06);
  color: var(--color-text);
  justify-content: center;
}

.case__nav-btn--next {
  background-color: #171624;
  color: #FFFFFF;
  justify-content: center;
}

@media (min-width: 769px) {
  .case__nav-btn--back {
    flex: 1;
  }

  .case__nav-btn--next {
    flex: 1;
  }
}

/* ---- Lightbox ---- */

.case__figure img {
  cursor: zoom-in;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(0, 0, 0, 0.85);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  padding: 1.5rem;
}

.lightbox--open {
  opacity: 1;
  visibility: visible;
}

.lightbox__img {
  max-width: 90vw;
  max-height: 90vh;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 8px;
  transform: scale(0.92);
  transition: transform 0.3s ease;
}

.lightbox--open .lightbox__img {
  transform: scale(1);
}

.lightbox__close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.15);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  transition: background 0.2s ease;
  line-height: 1;
}

.lightbox__close:hover,
.lightbox__close:focus-visible {
  background: rgba(255, 255, 255, 0.3);
}

.lightbox__close:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}