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

body {
  font-family: "JetBrains Mono", monospace;
  background-color: #dcebeb;
  color: black;
}

button {
  color: black;
  -webkit-appearance: none;
  appearance: none;
  -webkit-tap-highlight-color: transparent;
}

a {
  color: black;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

/* ===================== */
/* MAIN CARD.            */
/* ===================== */

.card {
  padding: 32px;
  width: 98%;
  position: relative;
}

.card-inner {
  background-color: #dcebeb;
  padding: 24px;
  border: 1px solid black;
  border-radius: 8px;
  font-size: 0.7rem;

  overflow: hidden;
  max-height: 250px;
}

.card-inner.is-open {
  max-height: 2000px; /* hack */
}

/* ===================== */
/* BASE CONTENT  (HEADER)*/
/* ===================== */

.card-inner > div:first-child {
  display: flex;
  gap: 24px;
  margin-bottom: 24px;
}

.photo {
  display: flex;
  align-items: center;
  justify-content: center;
}

.subtitle {
  margin-bottom: 12px;
}

hr {
  margin: 12px 0;
}

.info__list {
  display: flex;
  gap: 48px;
}

/* ===================== */
/* TABS                  */
/* ===================== */

.tabs {
  position: absolute;
  right: 16px;
  top: 60px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.tabs button {
  height: 28px;
  padding: 0 6px;
  border: 1px solid black;
  border-radius: 6px;
  background-color: #dcebeb;
  cursor: pointer;
}

.tabs button.active {
  background: black;
  color: white;
}

/* ===================== */
/* EXPANDED CONTENT.     */
/* ===================== */

.card-expand {
  margin-top: 24px;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.card-inner.is-open .card-expand {
  opacity: 1;
}

.content-inner {
  border: 1px solid black;
  padding: 24px;
}

/* ===================== */
/* CONTACT LIST          */
/* ===================== */
.contact-list {
  list-style: none;
  padding: 0;
  margin-top: 16px;
}

.contact-list li {
  margin-bottom: 8px;
}

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

@media (max-width: 768px) {
  .card {
    width: 100%;
    padding: 2px;
  }
  .card-inner {
    max-height: 524px;
    padding: 0 18px 18px 18px;
  }
  .card-inner > div:first-child {
    flex-direction: column;
    gap: 4px;
  }

  .info__list {
    flex-direction: column;
    gap: 16px;
  }

  .tabs {
    flex-direction: row;
    top: 510px;
  }

  .content-inner {
    margin: -10px -18px -18px -18px;
    border: 0;
    border-top: 1px solid black;
  }

  .device {
    width: 100%;
  }

  .barter-app {
    max-width: 100%;
  }
}

/* ===================== */
/* BARTER APP CONCEPT    */
/* ===================== */

.barter-app {
  --bg-main: #fff;
  --bg-card: #f2f2f2;
  --bg-soft: #eee;
  --bg-inner: #fff;
  --text-muted: #777;
  --radius-lg: 32px;
  --radius-md: 12px;
  --radius-sm: 8px;
}

@font-face {
  font-family: "Morris Roman";
  src: url("assets/MorrisRoman-Black.ttf") format("truetype");
  font-weight: 900;
  font-style: normal;
}

.barter-app {
  font-family: system-ui, sans-serif;
  background: var(--bg-main);
  padding: 16px;
  border: 1px solid #ccc;
  border-radius: var(--radius-lg);
  max-width: 300px;
}

.device {
  width: 330px;
  padding: 16px;
  background: #111;
  border-radius: 32px;
  margin-top: 40px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

/* Header */
.barter-app h1 {
  font-family: "Morris Roman", serif;
  font-size: 1.5rem;
}
.barter-app header > div {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
}

.barter-app .avatar {
  width: 48px;
  height: 48px;
  background: #ddd;
  border-radius: 50%;
}

/* Cards */
.barter-app .card {
  background: var(--bg-card);
  padding: 12px;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
}

.barter-app .inner-card {
  background: var(--bg-inner);
  padding: 12px;
  border-radius: var(--radius-md);
  margin-top: 8px;
}

/* Items */
.barter-app .card__item {
  background: var(--bg-inner);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  margin-top: 6px;
}

/* Columns */
.barter-app .cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* Match */
.barter-app .match-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.barter-app .exchange {
  margin-top: 8px;
  font-size: 0.9rem;
  color: #555;
}

/* Text */
.barter-app .muted {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.barter-app button {
  background: none;
  border: none;
  padding: 4px 8px;
  font: inherit;
  cursor: default;
}