/* MedicalTV M3U workspaces — additive presentation/accessibility layer.
   Existing component IDs, event handlers, media elements and processing logic are untouched. */

#upload-m3u-content,
#playlist-maker-content {
  --medtv-m3u-border: rgba(148, 163, 184, .20);
  --medtv-m3u-surface: rgba(15, 23, 42, .82);
  --medtv-m3u-surface-raised: rgba(30, 41, 59, .76);
  --medtv-m3u-accent: #818cf8;
  --medtv-m3u-text: #e2e8f0;
  min-width: 0;
}

#upload-m3u-content > .medtv-m3u-workflow-nav,
#playlist-maker-content > .medtv-m3u-workflow-nav {
  position: sticky;
  top: 0;
  z-index: 24;
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: space-between;
  gap: .85rem;
  min-width: 0;
  padding: .65rem clamp(.85rem, 2vw, 1.35rem);
  border-bottom: 1px solid var(--medtv-m3u-border);
  background: rgba(15, 23, 42, .96);
  box-shadow: 0 8px 22px rgba(2, 6, 23, .16);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.medtv-m3u-workflow-brand {
  display: flex;
  flex: 0 0 auto;
  flex-direction: column;
  gap: .1rem;
  min-width: 8.25rem;
  color: var(--medtv-m3u-text);
}

.medtv-m3u-workflow-brand strong {
  font-size: .82rem;
  font-weight: 750;
  letter-spacing: .01em;
}

.medtv-m3u-workflow-brand span {
  color: #a8b5c8;
  font-size: .68rem;
  line-height: 1.35;
}

.medtv-m3u-workflow-links {
  display: flex;
  flex: 1 1 auto;
  align-items: center;
  justify-content: flex-end;
  gap: .35rem;
  min-width: 0;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: thin;
  scrollbar-color: rgba(129, 140, 248, .45) transparent;
}

.medtv-m3u-workflow-link,
.medtv-m3u-workflow-switch {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  min-height: 40px;
  padding: .52rem .72rem;
  border: 1px solid transparent;
  border-radius: .8rem;
  color: #cbd5e1;
  font-size: .74rem;
  font-weight: 650;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color .16s ease, border-color .16s ease, color .16s ease;
}

.medtv-m3u-workflow-link::before {
  width: .38rem;
  height: .38rem;
  border-radius: 50%;
  background: #64748b;
  content: "";
}

.medtv-m3u-workflow-link:hover,
.medtv-m3u-workflow-link:focus-visible {
  border-color: rgba(129, 140, 248, .40);
  background: rgba(99, 102, 241, .13);
  color: #fff;
}

.medtv-m3u-workflow-link:focus-visible,
.medtv-m3u-workflow-switch:focus-visible,
.medtv-m3u-optional-toggle:focus-visible,
#upload-m3u-content button:focus-visible,
#playlist-maker-content button:focus-visible,
#upload-m3u-content a:focus-visible,
#playlist-maker-content a:focus-visible,
#upload-m3u-content input:focus-visible,
#upload-m3u-content textarea:focus-visible,
#upload-m3u-content select:focus-visible,
#playlist-maker-content input:focus-visible,
#playlist-maker-content textarea:focus-visible,
#playlist-maker-content select:focus-visible {
  outline: 3px solid rgba(129, 140, 248, .9);
  outline-offset: 2px;
}

.medtv-m3u-workflow-switch {
  border-color: rgba(99, 102, 241, .42);
  background: rgba(79, 70, 229, .20);
  color: #e0e7ff;
}

.medtv-m3u-workflow-switch:hover {
  border-color: rgba(129, 140, 248, .72);
  background: rgba(79, 70, 229, .34);
  color: #fff;
}

#upload-m3u-content [data-medtv-m3u-anchor],
#playlist-maker-content [data-medtv-m3u-anchor] {
  scroll-margin-top: 1.25rem;
}

#upload-m3u-content > div:not(.medtv-m3u-workflow-nav),
#playlist-maker-content > div:not(.medtv-m3u-workflow-nav) {
  min-width: 0;
}

#upload-m3u-content aside {
  min-width: 0;
  scrollbar-width: thin;
  scrollbar-color: rgba(100, 116, 139, .55) transparent;
}

#upload-m3u-content > div > section {
  min-width: 0;
  scrollbar-width: thin;
  scrollbar-color: rgba(100, 116, 139, .55) transparent;
}

#upload-m3u-content .glass,
#playlist-maker-content .glass {
  border-color: var(--medtv-m3u-border);
  box-shadow: 0 10px 26px rgba(2, 6, 23, .10);
}

#upload-m3u-content h3,
#playlist-maker-content h2,
#playlist-maker-content h3 {
  text-wrap: pretty;
}

#upload-m3u-content label,
#playlist-maker-content label {
  line-height: 1.45;
}

#upload-m3u-content input:not([type="checkbox"]),
#upload-m3u-content select,
#upload-m3u-content textarea,
#playlist-maker-content input:not([type="checkbox"]),
#playlist-maker-content select,
#playlist-maker-content textarea {
  max-width: 100%;
  border-color: rgba(148, 163, 184, .28);
}

#upload-m3u-content button,
#playlist-maker-content button {
  min-height: 42px;
}

#upload-m3u-content .medtv-m3u-optional-toggle {
  display: flex;
  width: 100%;
  min-height: 46px;
  align-items: center;
  justify-content: space-between;
  gap: .85rem;
  padding: .7rem .9rem;
  border: 1px solid rgba(34, 211, 238, .24);
  border-radius: .95rem;
  background: rgba(8, 47, 73, .24);
  color: #cffafe;
  text-align: left;
}

#upload-m3u-content .medtv-m3u-optional-toggle:hover {
  border-color: rgba(34, 211, 238, .48);
  background: rgba(8, 47, 73, .38);
}

#upload-m3u-content .medtv-m3u-optional-toggle span:first-child {
  display: flex;
  flex-direction: column;
  gap: .15rem;
}

#upload-m3u-content .medtv-m3u-optional-toggle strong {
  font-size: .78rem;
}

#upload-m3u-content .medtv-m3u-optional-toggle small {
  color: #a5b7c8;
  font-size: .68rem;
  font-weight: 450;
}

#upload-m3u-content .medtv-m3u-optional-toggle[aria-expanded="true"] .medtv-m3u-toggle-icon {
  transform: rotate(180deg);
}

#upload-m3u-content .medtv-m3u-optional-panel[hidden] {
  display: none !important;
}

#upload-m3u-content #upload-m3u-dropzone {
  min-height: 112px;
}

#upload-m3u-content #upload-m3u-video,
#upload-m3u-content #upload-m3u-audio {
  display: block;
  width: 100%;
}

#upload-m3u-content #upload-m3u-video {
  max-height: min(68vh, 720px);
  object-fit: contain;
}

#playlist-maker-content .max-w-7xl {
  width: 100%;
}

#playlist-maker-content #pm-input {
  min-height: 170px;
  line-height: 1.55;
  tab-size: 2;
}

#playlist-maker-content #pm-bundle-output,
#playlist-maker-content #pm-m3u-output {
  min-height: 150px;
  max-height: 38vh;
  line-height: 1.5;
  resize: vertical;
}

#playlist-maker-content #pm-filter {
  min-width: min(100%, 19rem);
}

#playlist-maker-content table {
  border-collapse: separate;
  border-spacing: 0;
}

#playlist-maker-content table th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: rgba(2, 6, 23, .96);
  color: #dbeafe;
  font-size: .72rem;
  letter-spacing: .025em;
}

#playlist-maker-content table td {
  padding-top: .7rem;
  padding-bottom: .7rem;
  color: #dbe4f0;
  vertical-align: top;
}

#playlist-maker-content #pm-table-body tr:hover {
  background: rgba(99, 102, 241, .075);
}

#upload-m3u-content [role="status"],
#playlist-maker-content [role="status"] {
  overflow-wrap: anywhere;
}

.medtv-m3u-visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* Main app tabs become a true keyboard-operable tablist. */
nav.mobile-nav-tabs[role="tablist"] .tab-button[role="tab"] {
  position: relative;
  min-height: 46px;
  border-bottom: 2px solid transparent;
}

nav.mobile-nav-tabs[role="tablist"] .tab-button[role="tab"][aria-selected="true"] {
  border-bottom-color: #818cf8;
  background: rgba(99, 102, 241, .10);
  color: #fff;
}

nav.mobile-nav-tabs[role="tablist"] .tab-button[role="tab"]:focus-visible {
  z-index: 2;
  outline-offset: -3px;
}

#upload-m3u-content[role="tabpanel"]:focus-visible,
#playlist-maker-content[role="tabpanel"]:focus-visible {
  outline: 2px solid rgba(129, 140, 248, .5);
  outline-offset: -2px;
}

@media (min-width: 1280px) {
  #upload-m3u-content > div:not(.medtv-m3u-workflow-nav) > aside {
    flex: 0 0 clamp(350px, 29vw, 430px);
    width: clamp(350px, 29vw, 430px);
    max-width: 36vw;
  }

  #upload-m3u-content > div:not(.medtv-m3u-workflow-nav) > section {
    flex: 1 1 auto;
    min-width: 0;
  }
}

@media (max-width: 900px) {
  #upload-m3u-content > .medtv-m3u-workflow-nav,
  #playlist-maker-content > .medtv-m3u-workflow-nav {
    align-items: flex-start;
    flex-direction: column;
    gap: .55rem;
    padding: .65rem .85rem;
  }

  .medtv-m3u-workflow-brand {
    min-width: 0;
  }

  .medtv-m3u-workflow-brand span {
    display: none;
  }

  .medtv-m3u-workflow-links {
    width: 100%;
    justify-content: flex-start;
  }

  .medtv-m3u-workflow-link,
  .medtv-m3u-workflow-switch {
    min-height: 42px;
    padding: .55rem .72rem;
  }

  #playlist-maker-content #pm-input {
    min-height: 145px;
  }
}

@media (max-width: 520px) {
  #upload-m3u-content > .medtv-m3u-workflow-nav,
  #playlist-maker-content > .medtv-m3u-workflow-nav {
    padding-right: max(.75rem, env(safe-area-inset-right));
    padding-left: max(.75rem, env(safe-area-inset-left));
  }

  .medtv-m3u-workflow-link,
  .medtv-m3u-workflow-switch {
    font-size: .7rem;
  }

  #playlist-maker-content #pm-bundle-output,
  #playlist-maker-content #pm-m3u-output {
    min-height: 120px;
  }
}

@media (prefers-reduced-motion: reduce) {
  #upload-m3u-content *,
  #playlist-maker-content *,
  nav.mobile-nav-tabs[role="tablist"] * {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}