const STYLE_ID = "ytpf-styles";

const CSS = `
.ytpf-wrapper {
  margin: 16px 0;
  font-family: "Roboto", "Arial", sans-serif;
  font-size: 13px;
  color: var(--yt-spec-text-primary, #0f0f0f);
}

html[dark] .ytpf-wrapper {
  color: #f1f1f1;
}

.ytpf-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  cursor: pointer;
  user-select: none;
}

.ytpf-header-title {
  font-size: 14px;
  font-weight: 500;
}

.ytpf-header-meta {
  font-size: 12px;
  color: var(--yt-spec-text-secondary, #606060);
}

html[dark] .ytpf-header-meta {
  color: #aaa;
}

.ytpf-toggle {
  font-size: 12px;
  color: var(--yt-spec-text-secondary, #606060);
  transition: transform 0.2s;
}

html[dark] .ytpf-toggle {
  color: #aaa;
}

.ytpf-toggle--collapsed {
  transform: rotate(-90deg);
}

.ytpf-filters {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 8px 16px;
  flex-wrap: wrap;
}

.ytpf-filter-input {
  flex: 1;
  min-width: 120px;
  height: 32px;
  box-sizing: border-box;
  padding: 0 10px;
  border: 1px solid var(--yt-spec-10-percent-layer, rgba(0,0,0,0.2));
  border-radius: 8px;
  background: transparent;
  color: var(--yt-spec-text-primary, #0f0f0f);
  font-size: 13px;
  font-family: "Roboto", "Arial", sans-serif;
  outline: none;
}

html[dark] .ytpf-filter-input {
  border-color: rgba(255,255,255,0.2);
  color: #f1f1f1;
}

.ytpf-filter-input:focus {
  border-color: var(--yt-spec-call-to-action, #065fd4);
}

html[dark] .ytpf-filter-input:focus {
  border-color: #3ea6ff;
}

.ytpf-filter-input::placeholder {
  color: var(--yt-spec-text-secondary, #606060);
}

html[dark] .ytpf-filter-input::placeholder {
  color: #aaa;
}

.ytpf-tag-input {
  position: relative;
  flex: 1;
  min-width: 160px;
  min-height: 32px;
  box-sizing: border-box;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 3px 8px;
  border: 1px solid var(--yt-spec-10-percent-layer, rgba(0,0,0,0.2));
  border-radius: 8px;
  background: transparent;
  align-items: center;
  cursor: text;
}

html[dark] .ytpf-tag-input {
  border-color: rgba(255,255,255,0.2);
}

.ytpf-tag-input:focus-within {
  border-color: var(--yt-spec-call-to-action, #065fd4);
}

html[dark] .ytpf-tag-input:focus-within {
  border-color: #3ea6ff;
}

.ytpf-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 24px;
  box-sizing: border-box;
  padding: 0 8px;
  border-radius: 4px;
  font-size: 12px;
  line-height: 24px;
  white-space: nowrap;
}

.ytpf-tag-remove {
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  opacity: 0.6;
}

.ytpf-tag-remove:hover {
  opacity: 1;
}

.ytpf-tag-text-input {
  border: none;
  outline: none;
  background: transparent;
  color: var(--yt-spec-text-primary, #0f0f0f);
  font-size: 13px;
  font-family: "Roboto", "Arial", sans-serif;
  flex: 1;
  min-width: 30px;
  height: 24px;
  padding: 0;
}

html[dark] .ytpf-tag-text-input {
  color: #f1f1f1;
}

.ytpf-tag-text-input::placeholder {
  color: var(--yt-spec-text-secondary, #606060);
}

html[dark] .ytpf-tag-text-input::placeholder {
  color: #aaa;
}

.ytpf-autocomplete {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 4px;
  background: #fff;
  border: 1px solid rgba(0,0,0,0.1);
  border-radius: 8px;
  max-height: 200px;
  overflow-y: auto;
  z-index: 2000;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

html[dark] .ytpf-autocomplete {
  background: #282828;
  border-color: rgba(255,255,255,0.1);
}

.ytpf-autocomplete-item {
  padding: 6px 12px;
  cursor: pointer;
  font-size: 13px;
  color: #0f0f0f;
}

html[dark] .ytpf-autocomplete-item {
  color: #f1f1f1;
}

.ytpf-autocomplete-item:hover,
.ytpf-autocomplete-item--active {
  background: #f2f2f2;
}

html[dark] .ytpf-autocomplete-item:hover,
html[dark] .ytpf-autocomplete-item--active {
  background: #3e3e3e;
}

.ytpf-filters--hidden {
  display: none;
}

.ytpf-filter-count {
  font-size: 12px;
  color: var(--yt-spec-text-secondary, #606060);
  align-self: center;
  white-space: nowrap;
}

html[dark] .ytpf-filter-count {
  color: #aaa;
}

.ytpf-body {
  overflow-x: auto;
}

.ytpf-body--hidden {
  display: none;
}

.ytpf-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}

.ytpf-th {
  text-align: left;
  padding: 8px 12px;
  font-weight: 500;
  font-size: 12px;
  color: var(--yt-spec-text-secondary, #606060);
  border-bottom: 1px solid var(--yt-spec-10-percent-layer, rgba(0,0,0,0.1));
  white-space: nowrap;
}

html[dark] .ytpf-th {
  color: #aaa;
  border-bottom-color: rgba(255,255,255,0.1);
}

.ytpf-th--sortable {
  cursor: pointer;
  user-select: none;
}

.ytpf-th--sortable:hover {
  color: var(--yt-spec-text-primary, #0f0f0f);
}

html[dark] .ytpf-th--sortable:hover {
  color: #f1f1f1;
}

.ytpf-th--sortable::after {
  content: "";
  margin-left: 4px;
}

.ytpf-th[data-sort-dir="asc"]::after {
  content: " \\25B2";
}

.ytpf-th[data-sort-dir="desc"]::after {
  content: " \\25BC";
}

.ytpf-td {
  padding: 6px 12px;
  border-bottom: 1px solid var(--yt-spec-10-percent-layer, rgba(0,0,0,0.1));
  vertical-align: middle;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

html[dark] .ytpf-td {
  border-bottom-color: rgba(255,255,255,0.1);
}

.ytpf-tr:hover {
  background: var(--yt-spec-badge-chip-background, #f2f2f2);
}

html[dark] .ytpf-tr:hover {
  background: #272727;
}

.ytpf-col-index { width: 48px; text-align: right; }
.ytpf-col-title { width: auto; }
.ytpf-col-channel { width: 180px; }
.ytpf-col-duration { width: 80px; font-family: "Roboto Mono", monospace; }
.ytpf-col-addedby { width: 140px; }
.ytpf-col-votes { width: 60px; text-align: center; font-family: "Roboto Mono", monospace; }
.ytpf-tr--unplayable {
  opacity: 0.45;
}

.ytpf-tr--unplayable .ytpf-link {
  text-decoration: line-through;
}

.ytpf-link {
  color: var(--yt-spec-text-primary, #0f0f0f);
  text-decoration: none;
}

html[dark] .ytpf-link {
  color: #f1f1f1;
}

.ytpf-link:hover {
  text-decoration: underline;
}

.ytpf-live {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
  background: #c00;
  color: #fff;
}
`;

export function injectStyles(): void {
  if (document.getElementById(STYLE_ID)) return;
  const style = document.createElement("style");
  style.id = STYLE_ID;
  style.textContent = CSS;
  document.head.appendChild(style);
}

export function removeStyles(): void {
  document.getElementById(STYLE_ID)?.remove();
}