:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --border: #d6dce4;
  --text: #111a2e;
  --muted: #5a677c;
  --primary: #0f65c3;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Source Sans 3", Arial, sans-serif;
}

.page {
  width: min(980px, 94%);
  margin: 28px auto;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
}

.header h1 {
  margin: 0;
  font-size: clamp(30px, 4vw, 44px);
}

.back-home {
  color: var(--primary);
  font-size: 18px;
}

.card {
  margin-top: 18px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
}

.card h2 {
  margin: 0 0 8px;
  font-size: 30px;
}

.hint {
  margin: 4px 0 16px;
  color: var(--muted);
  font-size: 16px;
}

.form-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

label {
  font-size: 18px;
  font-weight: 600;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 17px;
  font: inherit;
}

textarea {
  resize: vertical;
}

.rich-editor-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px;
  background: #f8fbff;
}

.rich-editor-toolbar .btn-secondary {
  padding: 7px 10px;
  font-size: 15px;
}

.rich-editor-toolbar input[type="color"] {
  width: 44px;
  min-width: 44px;
  height: 34px;
  border-radius: 8px;
  padding: 2px;
}

.color-picker-label {
  font-size: 14px;
  color: var(--muted);
  font-weight: 600;
}

.rich-editor {
  min-height: 260px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #ffffff;
  padding: 12px;
  font-size: 17px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.rich-editor:focus {
  outline: 2px solid #99c7fb;
  outline-offset: 1px;
}

.rich-editor p {
  margin: 0 0 10px;
}

.rich-editor img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 8px 0;
  border-radius: 6px;
}

.editor-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.selectors {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 14px 0;
}

.manage-box {
  margin: 10px 0 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  background: #f8fbff;
}

.manage-box h3 {
  margin: 0 0 8px;
  font-size: 22px;
}

.manage-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 8px;
}

.manage-row input {
  flex: 1 1 280px;
}

.upload-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.upload-row input[type="file"] {
  max-width: 440px;
  background: #ffffff;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 8px;
}

.btn-primary,
.btn-secondary {
  border: 0;
  border-radius: 10px;
  cursor: pointer;
  font: inherit;
  font-size: 17px;
  padding: 10px 14px;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
}

.btn-secondary {
  background: #e8eef8;
  color: var(--text);
}

.btn-link {
  display: inline-flex;
  align-items: center;
  color: var(--primary);
  font-size: 18px;
}

.message {
  min-height: 24px;
  margin: 10px 0 0;
  font-size: 17px;
  color: #0c5132;
}

.hidden {
  display: none;
}

@media (max-width: 760px) {
  .selectors {
    grid-template-columns: 1fr;
  }

  .header {
    flex-direction: column;
    align-items: flex-start;
  }
}