[data-theme="light"] {
  --bg-app: #f5f7fa;
  --bg-panel: #ffffff;
  --bg-surface: #f0f0f0;

  --text-primary: #111;
  --text-secondary: #333;

  --border-default: #ddd;
}
:root {
  --color-black: #000;
  --color-white: #fff;

  --gray-900: #060c14;
  --gray-850: #0f0f0f;
  --gray-800: #131313;
  --gray-750: #1a1a1a;
  --gray-700: #1e1e1e;
  --gray-650: #202020;
  --gray-600: #2e2e2e;
  --gray-500: #333333;
  --gray-400: #484848;

  --blue-500: #007bff;
  --blue-400: #66b0ff;
  --blue-300: #79ceff;
  --blue-700: #072545;

  --green-500: #10b981;
  --green-600: #059669;

  --yellow-500: #f59e0b;
  --yellow-600: #d97706;

  --red-500: #ef4444;
  --red-600: #dc2626;

  --indigo-500: #6366f1;

  --radius-sm: 3px;
  --radius-md: 8px;
}

:root {
  --bg-app: var(--gray-900);
  --bg-panel: var(--gray-800);
  --bg-surface: var(--gray-700);
  --bg-header: var(--gray-750);
  --bg-input: var(--gray-600);
  --bg-hover: var(--gray-500);

  --text-primary: #eaeaea;
  --text-secondary: #c7eeff;
  --text-muted: #979797;
  --text-accent: var(--blue-400);

  --border-default: var(--blue-700);
  --border-focus: var(--blue-500);

  --accent-primary: var(--blue-500);
  --accent-gradient: linear-gradient(135deg, #59a9ff, var(--blue-500));
}

:root {
  --marker-start-bg: rgba(0, 149, 255, 0.54);
  --marker-stop-bg: rgba(255, 0, 0, 0.54);

  --warning-color: rgb(207, 152, 0);
  --danger-color: var(--red-500);

  --timeline-bg: var(--gray-850);
  --timeline-tick: rgba(255, 255, 255, 0.25);
  --timeline-handle: var(--indigo-500);

  --btn-primary-bg: var(--blue-700);
  --btn-danger-bg: var(--red-500);
  --btn-danger-hover: var(--red-600);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  color: var(--text-primary);
}

body {
  min-height: 100vh;
  overflow: hidden;
  background: var(--bg-app);
  font-family: -apple-system, BlinkMacSystemFont, "Ubuntu";
  font-size: 13px;
  padding: 10px;
  max-width: 1400px;
  margin: 0 auto;
}


header{
  display: flex;
  align-items: center;
  margin-bottom: .2em;
  gap: 1.2em;
  border-bottom: 1px solid var(--blue-700);
}

.panel-menu{
  flex: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: .2em;  
  gap: .6em;
}

.panel-menu-list{
  list-style: none;
  display: flex;
  align-items: center;
  gap: 1em;
}
.panel-menu-list .panel-menu-list{
  padding-left: 1em;
  border-left: 1px solid var(--blue-700);
}
.status{
  display: flex;
  justify-content: center;
  gap: .2em;
}
.title {
  font-size: 1rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.unsaved-changes{
  width: .8rem;
  font-size: .8rem;
}


/* Scrollbar Styling */
.scrollbar::-webkit-scrollbar {
  height: 10px;
  width: 10px;
}

.scrollbar::-webkit-scrollbar-track {
  background: var(--gray-850);
  border-radius: 5px;
}

.scrollbar::-webkit-scrollbar-thumb {
  background: var(--accent-primary);
  border-radius: 5px;
}

.scrollbar::-webkit-scrollbar-thumb:hover {
  background: var(--blue-300);
}
.timeline-container.scrollbar::-webkit-scrollbar-track {
  margin: 0 0.3em;
}

.top-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.3em;
}
.title-container {
  display: flex;
  align-items: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  gap: 1em;
}

.video-title {
  font-size: 0.8rem;
  font-weight: normal;
}

/* Video Input Section */
.video-input-section {
  display: flex;
  gap: 0.3em;
  flex-wrap: nowrap;
  justify-content: center;
}

.video-input {
  padding: 5px 10px;
  background: var(--bg-input);
  border: 1px solid var(--border-default);
  border-radius: 3px;
  width: 300px;
  outline: none;
  transition: border-color 0.3s;
}

.video-input:focus,
.marker-input:focus {
  border-color: var(--border-focus);
}
main {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.3em;
}

.container1 {
  user-select: none;
  display: flex;
  justify-content: center;
  gap: 0.3em;
}

/* Panel */
.panel {
  background: var(--bg-panel);
  display: flex;
  justify-content: start;
  flex-direction: column;
  padding: 1em;
}

.panel1 {
  flex: 0.7;
  min-width: 300px;
  height: 370px;
}

.panel2{
  gap: .5em;
}

/* Video Wrapper */
.video-wrapper {
  flex: 1.3;
  position: relative;
  background: black;
  overflow: hidden;
}

#youtube-player {
  width: 100%;
  height: 100%;
}
#video-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: black;
  pointer-events: none;
  font-size: 14px;
  z-index: 2;
}


.zoom-slider,
.volume-slider {
  height: 2px;
  -webkit-appearance: none;
  background: linear-gradient(90deg, #484848, var(--accent-primary));
  border-radius: 3px;
  outline: none;
}

.volume-slider {
  background: linear-gradient(
    to right,
    rgba(0, 255, 21, 0.207),
    rgb(0, 255, 21)
  );
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 15px;
  height: 15px;
  background: var(--gray-850);
  border-radius: 50%;
  cursor: pointer;
  border: 1px solid var(--accent-primary);
}

.slider::-moz-range-thumb {
  width: 15px;
  height: 15px;
  background: #000000;
  border-radius: 50%;
  cursor: pointer;
  border: 1px solid var(--primary-color);
}

/* Markers */
#markersContainer {
  position: relative;
  height: 40px;
}
.marker-range {
  position: absolute;
  left: 0;
}

.marker-line {
  position: absolute;
  height: 100%;
  left: 0;
  z-index: 1;
}

.marker-flag {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-47%);
  width: 20px;
  text-align: center;
  background: var(--marker-start-bg);
}

.marker-flag.start::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 100%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-top: 10px solid var(--marker-start-bg);
}
.marker-flag.stop {
  background: var(--marker-stop-bg);
}
.marker-flag.stop::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 100%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-top: 10px solid var(--marker-stop-bg);
}

.marker-flag:hover {
  color: var(--text-accent);
}

.marker-tooltip {
  opacity: 0;
  position: absolute;
  padding: 5px;
  background: rgba(0, 0, 0, 0.9);
  font-size: 0.7rem;
  white-space: nowrap;
  pointer-events: none;
  transition: opacity 0.2s;
  z-index: 100;
}

.marker-range:hover .marker-tooltip {
  opacity: 1;
}

.fps-info {
  display: flex;
  align-items: center;
  gap: .3em;
}

.fps-info label {
  font-size: 0.8rem;
}

/* Controls Section */
.controls-section {
  display: flex;
  align-items: center;
  border-radius: 8px;
  backdrop-filter: blur(10px);
  flex-wrap: wrap;
  gap: 0.3em;
}

.playback-controls {
  display: flex;
  gap: 0.3em;
  flex-wrap: wrap;
}

.audio-controls {
  margin-left: 1em;
}