/* Case study: Invoice Platform — layout and typography from design spec */

.case-study-body {
  background: #EEE7E7;
}

.case-study-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: 1600px;
  margin: 0 auto;
  padding: 128px 47px;
  gap: 64px;
  position: relative;
}

.case-study-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  width: 100%;
  max-width: 1200px;
}

.case-study-read-time {
  width: fit-content;
  font-family: var(--font-inter);
  font-weight: 500;
  font-size: 18px;
  line-height: 22px;
  text-align: center;
  letter-spacing: 0.3em;
  color: #808080;
  margin: 0;
  text-transform: uppercase;
}

.case-study-hero-image {
  width: 100%;
  margin: 32px 0 0;
  padding: 0;
}

/* More padding between second header (Beyond Invoice) hero image and text below */
.case-study-header--beyond {
  padding-bottom: 56px;
}

/* More padding between intro text block and "This project focuses..." section */
.case-study-section--after-po-hero {
  margin-bottom: 56px;
}

.case-study-hero-image img {
  width: 100%;
  height: auto;
  display: block;
  vertical-align: top;
  border-radius: 32px;
}

.case-study-title {
  width: 100%;
  max-width: 1200px;
  font-family: var(--font-inter);
  font-weight: 200;
  font-size: 90px;
  line-height: 109px;
  text-align: center;
  color: var(--color-black);
  margin: 0;
}

.case-study-content {
  width: 100%;
  max-width: 1200px;
  display: flex;
  flex-direction: column;
  gap: 64px;
}

.case-study-section {
  width: 100%;
}

.case-study-image {
  margin: 48px 0;
  padding: 0;
}

.case-study-image img {
  width: 100%;
  height: auto;
  display: block;
  vertical-align: top;
  border-radius: 32px;
}

.case-study-iteration-image {
  margin: 48px 0;
  padding: 0;
}

.case-study-iteration-image img {
  width: 100%;
  height: auto;
  display: block;
  vertical-align: top;
  border-radius: 32px;
}

/* H2 = Headline M (64px / 88px) */
.case-study-h2 {
  font-family: var(--font-inter);
  font-weight: 200;
  font-size: 64px;
  line-height: 88px;
  color: var(--color-black);
  margin: 0 0 32px;
}

/* Body text = Headline S (36px), increased line height and spacing */
.case-study-body-text {
  font-family: var(--font-inter);
  font-weight: 200;
  font-size: 36px;
  line-height: 56px;
  color: var(--color-black);
  margin: 0 0 48px;
}

/* Headline M body text (Challenge intro, Design system section, etc.) */
.case-study-challenge-intro,
.case-study-body-text--headline-m {
  font-size: 64px;
  line-height: 88px;
}

.case-study-body-text:last-child {
  margin-bottom: 0;
}

.case-study-list {
  font-family: var(--font-inter);
  font-weight: 200;
  font-size: 36px;
  line-height: 56px;
  color: var(--color-black);
  margin: 0 0 48px;
  padding-left: 1.5em;
}

.case-study-list li {
  margin-bottom: 0.5em;
}

.case-study-list li:last-child {
  margin-bottom: 0;
}

.case-study-list--headline-m {
  font-size: 64px;
  line-height: 77px;
}

.case-study-list--roles {
  list-style: none;
  padding-left: 0;
}

.case-study-list--roles li {
  margin-bottom: 1em;
}

.case-study-section--highlight .case-study-body-text {
  font-weight: 300;
}

.case-study-table-wrap {
  width: 100%;
  overflow-x: auto;
  margin-top: 16px;
}

.case-study-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-inter);
  font-size: 20px;
  line-height: 1.4;
  color: var(--color-black);
}

.case-study-table th,
.case-study-table td {
  padding: 16px 20px;
  text-align: left;
  border: 1px solid var(--color-grey-300);
  background: #fff;
}

.case-study-table thead th {
  font-weight: 600;
  background: var(--color-grey-100);
}

.case-study-table tbody tr:nth-child(even) td {
  background: var(--color-grey-100);
}

.case-study-footer {
  width: 100%;
  max-width: 1200px;
  padding-top: 32px;
  border-top: 1px solid var(--color-grey-300);
}

.case-study-back {
  color: var(--color-black);
  text-decoration: underline;
}

.case-study-back:hover {
  color: var(--color-grey-600);
}

@media (max-width: 900px) {
  .case-study-wrap {
    padding: 64px 24px;
    gap: 48px;
  }

  .case-study-title {
    font-size: 48px;
    line-height: 1.2;
  }

  .case-study-read-time {
    font-size: 14px;
    letter-spacing: 0.2em;
  }

  .case-study-h2 {
    font-size: 40px;
    line-height: 1.35;
  }

  .case-study-body-text,
  .case-study-list {
    font-size: 28px;
    line-height: 1.5;
    margin-bottom: 40px;
  }

  .case-study-challenge-intro,
  .case-study-body-text--headline-m {
    font-size: 40px;
    line-height: 1.35;
  }

  .case-study-list--headline-m {
    font-size: 40px;
    line-height: 1.35;
  }

  .case-study-image,
  .case-study-iteration-image {
    margin: 40px 0;
  }

  .case-study-hero-image img,
  .case-study-image img,
  .case-study-iteration-image img {
    border-radius: 8px;
  }

  .case-study-table {
    font-size: 16px;
  }

  .case-study-table th,
  .case-study-table td {
    padding: 12px 14px;
  }
}