:root {
  color-scheme: light;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  color: #1a1a1a;
  background: #f7f7f8;
  margin: 0;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 1rem 1.25rem 1.5rem;
}

h1 { font-size: 1.6rem; margin: 0.6em 0; }
h2 { font-size: 1.3rem; }
h3 { font-size: 1.1rem; }

a { color: #1558d6; }

img { max-width: 100%; height: auto; }

.box {
  border: 1px solid #d0d0d5;
  background: #fff;
  margin: 10px 0;
  padding: 0.5rem 1rem;
  border-radius: 10px;
}

ul.nav {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 0.5rem;
  margin: 0 0 1rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid #d0d0d5;
}

ul.nav li {
  display: inline-block;
  margin: 0;
  padding: 0;
}

ul.nav a {
  display: inline-block;
  padding: 0.35rem 0.6rem;
}

ul.nav form {
  display: inline;
  margin: 0;
}

.paste-form .field {
  margin: 0 0 0.55rem;
}

.paste-form label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.paste-form input[type=text],
.paste-form input[type=password],
.paste-form input[type=file],
.paste-form textarea {
  width: 100%;
  max-width: 640px;
  box-sizing: border-box;
  padding: 0.4rem 0.5rem;
  border: 1px solid #b8b8c0;
  border-radius: 6px;
  font: inherit;
}

.paste-form textarea {
  min-height: 140px;
  resize: vertical;
}

.paste-form .checkboxes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  margin: 0 0 0.55rem;
}

.paste-form .checkboxes .field.checkbox {
  margin: 0;
}

.paste-form .field.checkbox label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 400;
  cursor: pointer;
  margin: 0;
}

.paste-form .field.checkbox input[type=checkbox] {
  width: auto;
  margin: 0;
}

.actions {
  margin-top: 1rem;
}

button,
input[type=submit] {
  font: inherit;
  padding: 0.45rem 0.9rem;
  border: 1px solid #1558d6;
  background: #1558d6;
  color: #fff;
  border-radius: 6px;
  cursor: pointer;
}

button:hover,
input[type=submit]:hover {
  background: #1148b0;
}

.flash {
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  margin: 0 0 1rem;
}

.flash.notice { background: #e6f4ea; color: #16653a; border: 1px solid #b7dfc2; }
.flash.error  { background: #fdecec; color: #b71c1c; border: 1px solid #f3b5b5; }
.flash.alert  { background: #fff6e5; color: #8a5a00; border: 1px solid #f0d59a; }