body {
  background: #181a1b;
  color: #f1f1f1;
  font-family: 'Segoe UI', Arial, sans-serif;
  margin: 0;
  padding: 0;
}

header {
  background: #23272a;
  padding: 1rem 2rem;
  text-align: center;
  font-size: 1.5rem;
  font-weight: bold;
  letter-spacing: 1px;
  box-shadow: 0 2px 8px #0002;
  position: relative;
}


.container {
  max-width: 700px;
  margin: 2rem auto;
  background: #222426;
  border-radius: 12px;
  box-shadow: 0 4px 24px #0004;
  padding: 2rem 1.5rem;
}

form, .paper-list {
  margin-top: 2rem;
}

input, select, button, textarea {
  background: #23272a;
  color: #f1f1f1;
  border: 1px solid #333;
  border-radius: 6px;
  padding: 0.7rem 1rem;
  margin-bottom: 1rem;
  width: 100%;
  font-size: 1rem;
  box-sizing: border-box;
}

button {
  background: #5865f2;
  color: #fff;
  border: none;
  cursor: pointer;
  font-weight: bold;
  transition: background 0.2s;
}
button:hover {
  background: #4752c4;
}

.paper-list {
  list-style: none;
  padding: 0;
}
.paper-list li {
  background: #23272a;
  margin-bottom: 0.5rem;
  padding: 0.5rem;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  box-shadow: 0 2px 8px #0002;
}
.paper-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.paper-title {
  font-size: 1rem;
  font-weight: 500;
  display: flex;
  align-items: center;
}
.pdf-icon {
  width: 16px;
  height: 16px;
  margin-right: 0.4rem;
}
.delete-icon {
  width: 16px;
  height: 16px;
  margin-left: 0.4rem;
}
.paper-title a {
  color: #fff;
  text-decoration: none;
  font-weight: normal;
}
.paper-title a:hover {
  text-decoration: underline;
}
.paper-meta {
  font-size: 0.95rem;
  color: #b9bbbe;
}
.paper-actions a {
  color: #57f287;
  text-decoration: none;
  font-weight: bold;
  margin-right: 1rem;
}
.paper-actions a:hover {
  text-decoration: underline;
}

@media (max-width: 600px) {
  .container {
    padding: 1rem 0.5rem;
  }
  header {
    font-size: 1.1rem;
    padding: 0.7rem 0.5rem;
  }
} .pagination {
  margin-top: 1rem;
  text-align: center;
}
.pagination a {
  color: #57f287;
  margin: 0 0.3rem;
  text-decoration: none;
}
.pagination strong {
  margin: 0 0.3rem;
}
.year-heading {
  margin-top: 2rem;
  font-size: 1.2rem;
  font-weight: bold;
}

.download-link {
  color: #57f287;
  text-decoration: none;
  font-weight: bold;
}
.download-link:hover {
  text-decoration: underline;
}

.contact-btn {
  color: #57f287;
  font-weight: bold;
  text-decoration: none;
}
.contact-btn:hover {
  text-decoration: underline;
}

.drop-area {
  border: 2px dashed #333;
  padding: 1rem;
  text-align: center;
  margin-bottom: 1rem;
  cursor: pointer;
}
.drop-area.dragover {
  background: #2a2c2e;
}

.error-message {
  background: #3a1f1f;
  border: 1px solid #ff6b6b;
  border-radius: 8px;
  color: #ffdede;
  margin-top: 1rem;
  padding: 1rem;
  line-height: 1.4;
}