:root {
  color-scheme: dark;
  --bg: #101214;
  --panel: #181c20;
  --panel-2: #20262b;
  --line: #343c44;
  --text: #f4f0e8;
  --muted: #aeb7b2;
  --accent: #57c7a2;
  --accent-2: #f3b35a;
  --progress: var(--accent-2);
  --marker-a: #35e0c2;
  --marker-b: #41dfff;
  --danger: #ff6f61;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.36);
  --time-col: 46px;
  --slider-thumb-size: 16px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    linear-gradient(120deg, rgba(87, 199, 162, 0.12), transparent 34%),
    linear-gradient(240deg, rgba(243, 179, 90, 0.11), transparent 32%),
    var(--bg);
  color: var(--text);
}

button,
input,
select {
  font: inherit;
}

button {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #242a30;
  color: var(--text);
  cursor: pointer;
  transition: border-color 140ms ease, background 140ms ease, transform 140ms ease;
}

button:hover {
  border-color: var(--accent);
  background: #2a3338;
}

button:active {
  transform: translateY(1px);
}

button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid rgba(87, 199, 162, 0.3);
  outline-offset: 2px;
}

.player-workspace:focus {
  outline: none;
}

.app-shell {
  width: min(1440px, 100%);
  min-height: 100vh;
  margin: 0 auto;
  padding: 24px;
  display: flex;
}

.player-workspace {
  width: 100%;
  min-height: calc(100vh - 48px);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.topbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  align-items: end;
}

.field-label {
  display: none;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.88rem;
}

.url-row {
  display: grid;
  grid-template-columns: minmax(148px, auto) minmax(0, 1fr);
  gap: 10px;
}

#videoUrl {
  min-width: 0;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 14px;
  background: #15191d;
  color: var(--text);
}

.primary-button,
.secondary-button {
  padding: 0 18px;
  font-weight: 700;
}

.primary-button {
  min-width: 148px;
  padding: 0 14px;
  border-color: rgba(87, 199, 162, 0.65);
  background: var(--accent);
  color: #07110e;
}

.primary-button:hover {
  background: #6bd5b2;
  color: #07110e;
}

.content-grid {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(290px, 360px);
  gap: 18px;
  align-items: stretch;
}

.stage-panel,
.shortcuts-panel {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(24, 28, 32, 0.92);
  box-shadow: var(--shadow);
}

.stage-panel {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.video-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  margin-bottom: 8px;
  overflow: hidden;
  border-radius: 8px;
  background: #060708;
}

#player,
#player iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.empty-state {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 8px;
  text-align: center;
  padding: 24px;
  color: var(--muted);
  background:
    linear-gradient(135deg, rgba(87, 199, 162, 0.12), transparent),
    #080a0b;
}

.empty-state strong {
  color: var(--text);
  font-size: clamp(1.2rem, 3vw, 2rem);
  letter-spacing: 0;
}

.empty-state.hidden {
  display: none;
}

.timebar {
  position: relative;
  display: grid;
  grid-template-columns: var(--time-col) minmax(0, 1fr) var(--time-col);
  column-gap: 0;
  align-items: end;
  padding-bottom: 0;
  margin-top: 6px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.timebar > :first-child {
  position: relative;
  left: auto;
  top: auto;
  z-index: 4;
  align-self: end;
  margin-bottom: 10px;
  padding: 2px 0;
  border-radius: 6px;
  background: rgba(24, 28, 32, 0.92);
  text-align: left;
  transform: none;
  pointer-events: none;
}

.timebar > :last-child {
  position: relative;
  right: auto;
  top: auto;
  z-index: 4;
  align-self: end;
  margin-bottom: 10px;
  padding: 2px 0;
  border-radius: 6px;
  background: rgba(24, 28, 32, 0.92);
  text-align: right;
  transform: none;
  pointer-events: none;
}

.timeline-shell {
  position: relative;
  min-width: 0;
  width: 100%;
  height: 64px;
  display: flex;
  align-items: flex-end;
}

#seekSlider {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 42px;
  margin: 0;
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  accent-color: var(--progress);
}

#seekSlider::-webkit-slider-runnable-track {
  height: 8px;
  border-radius: 999px;
  background:
    linear-gradient(
      90deg,
      var(--progress) 0%,
      var(--progress) var(--seek-percent, 0%),
      var(--line) var(--seek-percent, 0%),
      var(--line) 100%
    );
}

#seekSlider::-webkit-slider-thumb {
  width: var(--slider-thumb-size);
  height: var(--slider-thumb-size);
  margin-top: -4px;
  border: 2px solid #101214;
  border-radius: 999px;
  background: var(--progress);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.36);
  appearance: none;
  -webkit-appearance: none;
}

#seekSlider::-moz-range-track {
  height: 8px;
  border-radius: 999px;
  background: var(--line);
}

#seekSlider::-moz-range-progress {
  height: 8px;
  border-radius: 999px;
  background: var(--progress);
}

#seekSlider::-moz-range-thumb {
  width: var(--slider-thumb-size);
  height: var(--slider-thumb-size);
  border: 2px solid #101214;
  border-radius: 999px;
  background: var(--progress);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.36);
}

.loop-range-marker {
  position: absolute;
  left: var(--loop-left, 0%);
  right: calc(100% - var(--loop-right, 0%));
  top: calc(100% - 21px);
  z-index: 1;
  height: 8px;
  border-radius: 999px;
  background: rgba(243, 179, 90, 0.28);
  transform: translateY(-50%);
  opacity: 0;
  pointer-events: none;
}

.loop-range-marker.visible {
  opacity: 1;
}

.loop-marker {
  position: absolute;
  left: var(--marker-left, 0%);
  bottom: 40px;
  z-index: 3;
  width: 9px;
  height: 24px;
  display: none;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 999px;
  color: #101214;
  font-size: 0.78rem;
  font-weight: 900;
  line-height: 1;
  transform: translateX(-50%);
  pointer-events: none;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.32);
}

.loop-marker.visible {
  display: flex;
}

.loop-marker-a {
  background: var(--marker-a);
}

.loop-marker-b {
  background: var(--marker-b);
}

.marker-label {
  position: absolute;
  top: 50%;
  min-width: 48px;
  white-space: nowrap;
  border: 1px solid rgba(16, 18, 20, 0.72);
  border-radius: 999px;
  padding: 5px 8px;
  color: #101214;
  font-size: 0.78rem;
  font-weight: 900;
  line-height: 1;
  transform: translateY(-50%);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.28);
}

.marker-label-a {
  right: calc(100% + 5px);
  text-align: right;
  background: var(--marker-a);
}

.marker-label-b {
  left: calc(100% + 5px);
  text-align: left;
  background: var(--marker-b);
}

.control-row {
  display: grid;
  grid-template-columns: repeat(8, minmax(52px, 1fr));
  flex-wrap: nowrap;
  gap: 10px;
  align-items: center;
  overflow-x: auto;
  padding-bottom: 2px;
  scrollbar-width: thin;
}

.icon-button {
  width: 100%;
  min-width: 52px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: "SF Pro", "SF Pro Display", -apple-system, BlinkMacSystemFont, "Segoe UI Symbol", sans-serif;
  font-size: 1rem;
  font-weight: 800;
}

#restartBtn > span[aria-hidden="true"] {
  font-size: 1.98rem;
  line-height: 1;
  transform: translateY(-2px);
}

#toggleLoopBtn > span[aria-hidden="true"] {
  font-size: 1.75rem;
  font-weight: 400;
  line-height: 1;
  transform: translateY(-2px);
}

#rewindBtn > span[aria-hidden="true"],
#forwardBtn > span[aria-hidden="true"] {
  font-size: 1.1rem;
  line-height: 1;
}

.icon-button:hover,
.icon-button:focus-visible,
.icon-button.keyboard-active,
.toggle-button[aria-pressed="true"] {
  border-color: rgba(243, 179, 90, 0.82);
  background: rgba(243, 179, 90, 0.18);
  color: #ffc373;
}

.icon-button.keyboard-active {
  transform: translateY(1px);
}

.play-button {
  min-width: 56px;
  width: 100%;
  border-color: rgba(243, 179, 90, 0.72);
  background: var(--accent-2);
  color: #170f04;
  font-size: 1.5rem;
  font-weight: 800;
}

.play-button:hover {
  background: #ffc373;
  color: #170f04;
}

#setABtn {
  border-color: rgba(53, 224, 194, 0.42);
  color: #8df6e5;
}

#setABtn:hover,
#setABtn:focus-visible,
#setABtn.keyboard-active {
  border-color: rgba(53, 224, 194, 0.82);
  background: rgba(53, 224, 194, 0.18);
  color: var(--marker-a);
}

#setBBtn {
  border-color: rgba(65, 223, 255, 0.42);
  color: #9beeff;
}

#setBBtn:hover,
#setBBtn:focus-visible,
#setBBtn.keyboard-active {
  border-color: rgba(65, 223, 255, 0.82);
  background: rgba(65, 223, 255, 0.16);
  color: var(--marker-b);
}

#setABtn.marker-set {
  border-color: rgba(53, 224, 194, 0.82);
  background: rgba(53, 224, 194, 0.18);
  color: var(--marker-a);
}

#setBBtn.marker-set {
  border-color: rgba(65, 223, 255, 0.82);
  background: rgba(65, 223, 255, 0.16);
  color: var(--marker-b);
}

.speed-control {
  margin-left: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  width: 100%;
  min-height: 42px;
  color: var(--muted);
}

.speed-control span {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.speed-control select {
  width: 100%;
  min-width: 52px;
  max-width: none;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 6px;
  background: #15191d;
  color: var(--text);
  text-align: center;
}

.speed-control select:hover {
  border-color: rgba(243, 179, 90, 0.82);
  background: #15191d;
  color: var(--text);
}

.speed-control.keyboard-active select {
  border-color: rgba(243, 179, 90, 0.82);
  background: #15191d;
  color: var(--text);
}

.speed-control select:focus-visible {
  outline: none;
  outline-offset: 0;
  border-color: rgba(243, 179, 90, 0.82);
  background: #15191d;
  color: var(--text);
}

.speed-control select:focus {
  outline: none;
  outline-offset: 0;
}

.toggle-button[aria-pressed="true"] {
  border-color: rgba(243, 179, 90, 0.82);
  background: rgba(243, 179, 90, 0.18);
  color: #ffc373;
}

.shortcuts-panel {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.panel-heading h1 {
  margin: 0;
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  line-height: 1.05;
  letter-spacing: 0;
}

.shortcut-list {
  display: grid;
  gap: 8px;
}

.shortcut-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 104px;
  gap: 10px;
  align-items: center;
  min-height: 48px;
  padding: 8px 8px 8px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-2);
}

.shortcut-row span {
  min-width: 0;
  color: var(--muted);
}

.shortcut-key {
  height: 34px;
  min-height: 34px;
  padding: 0 10px;
  background: #111518;
  color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.86rem;
}

.shortcut-key.listening {
  border-color: var(--accent-2);
  color: var(--accent-2);
}

.secondary-button {
  margin-top: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 940px) {
  .app-shell {
    padding: 14px;
  }

  .player-workspace {
    min-height: calc(100vh - 28px);
  }

  .topbar,
  .content-grid {
    grid-template-columns: 1fr;
  }

  .shortcuts-panel {
    box-shadow: none;
  }
}

@media (max-width: 560px) {
  .url-row {
    grid-template-columns: minmax(124px, auto) minmax(0, 1fr);
  }

  .primary-button {
    min-width: 124px;
    padding: 0 10px;
    font-size: 0.86rem;
  }

  .timebar {
    --time-col: 46px;
    column-gap: 0;
    font-size: 0.86rem;
  }

  .speed-control {
    justify-content: center;
  }

  .speed-control select {
    min-width: 34px;
    max-width: none;
    padding: 0 6px;
  }

  .control-row {
    grid-template-columns: repeat(8, minmax(34px, 1fr));
    gap: 4px;
    overflow-x: visible;
  }

  .icon-button {
    min-width: 34px;
    font-size: 0.9rem;
  }

  .shortcut-row {
    grid-template-columns: minmax(0, 1fr) 96px;
  }
}