* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: #303035;
  font-family: Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  background: #eeeeF0;
}

.topbar {
  align-items: center;
  background: #725493;
  color: #fff;
  display: flex;
  justify-content: space-between;
  min-height: 76px;
  padding: 0 max(24px, calc((100% - 1100px) / 2));
}

.brand {
  color: #fff;
  font-size: 20px;
  font-weight: bold;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  border-radius: 5px;
  cursor: pointer;
  min-height: 42px;
  padding: 8px 14px;
}

input,
textarea,
select {
  background: #fff;
  border: 1px solid #c8c8cd;
  border-radius: 5px;
  padding: 9px 10px;
}

input:focus,
textarea:focus,
select:focus,
button:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(114, 84, 147, .35);
  outline-offset: 2px;
}

nav {
  align-items: center;
  display: flex;
  gap: 22px;
}

nav a,
nav button {
  background: transparent;
  border: 0;
  color: #fff;
  cursor: pointer;
  font-size: 15px;
  padding: 9px 0;
  text-decoration: none;
}

nav button {
  border: 1px solid rgba(255, 255, 255, .8);
  border-radius: 4px;
  padding: 9px 14px;
}

nav button:hover,
nav a:hover {
  opacity: .8;
}

main {
  margin: 32px auto 60px;
  max-width: 1150px;
  padding: 0 24px;
}

main > h1,
main > p,
main > section {
  background: rgba(250, 250, 251, .94);
  border-radius: 8px;
  margin-left: auto;
  margin-right: auto;
  max-width: 100%;
}

main > h1,
main > p {
  padding: 12px 22px;
}

main > section {
  margin-top: 20px;
  padding: 26px;
}

h1,
h2,
h3 {
  line-height: 1.25;
}

h1 {
  font-size: clamp(28px, 4vw, 38px);
}

h2 {
  font-size: 24px;
}

form p {
  margin: 0 0 18px;
}

form input:not([type="hidden"]),
form textarea {
  max-width: 100%;
  width: min(100%, 680px);
}

#search {
  min-width: min(100%, 260px);
}

#entry-action {
  align-items: flex-start;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

#entry-action button {
  background: #725493;
  border: 0;
  color: #fff;
  font-weight: bold;
}

#entry-action button:hover {
  background: #614582;
}

#entry-action p {
  color: #66666d;
  font-size: 14px;
  margin: 0;
}

#entry-form {
  border: 1px solid #d1d1d5;
  border-radius: 8px;
  margin-top: 16px;
  padding: 22px;
}

#entries {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

#subject-cards {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.subject-card {
  background: #fdfdfd;
  border: 1px solid #d1d1d5;
  border-radius: 10px;
  cursor: pointer;
  min-height: 120px;
  padding: 20px;
  text-align: left;
}

.subject-card:hover,
.subject-card:focus {
  border-color: #725493;
  box-shadow: 0 4px 12px rgba(0, 0, 0, .1);
}

.subject-card strong {
  color: #39363d;
  display: block;
  font-size: 17px;
  margin-bottom: 8px;
}

.subject-card span {
  color: #66666d;
  font-size: 14px;
}

.entry-card {
  background: #fdfdfd;
  border: 1px solid #d1d1d5;
  border-radius: 10px;
  cursor: pointer;
  min-height: 210px;
  padding: 22px;
  transition: box-shadow .15s, transform .15s;
}

.entry-card:hover,
.entry-card:focus {
  box-shadow: 0 4px 12px rgba(0, 0, 0, .12);
  transform: translateY(-2px);
}

.entry-card h3 {
  color: #39363d;
  font-size: 21px;
  margin: 0 0 14px;
}

.entry-card p {
  color: #55555b;
  font-size: 16px;
}

.entry-card .card-preview {
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

#entry-detail {
  background: #fdfdfd;
  border: 1px solid #d1d1d5;
  margin-top: 24px;
  padding: 28px;
}

#detail-category {
  color: #6b3fa0;
  font-weight: bold;
}

#detail-content {
  color: #44444a;
  font-size: 17px;
  line-height: 1.7;
  white-space: pre-wrap;
}

#back-to-entries {
  margin-bottom: 20px;
}

#entries hr {
  display: none;
}

#entry-message,
#auth-message {
  color: #5a3e70;
  min-height: 24px;
}

@media (max-width: 650px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
    padding-bottom: 18px;
    padding-top: 18px;
  }

  nav {
    flex-wrap: wrap;
    gap: 12px 16px;
  }
}