/* Picturemaxx Motion — Phase 1 */

:root {
  --pm-blue: #1814ff;
  --pm-blue-2: #4170ff;
  --pm-blue-3: #6a8fff;
  --pm-turkis-1: #76f2e1;
  --pm-turkis-2: #a1f7ea;
  --pm-turkis-3: #e7fcfa;
  --pm-orange-1: #ff802a;
  --pm-orange-2: #ff9146;
  --pm-orange-3: #ffa262;
  --pm-yellow: #ffeea9;
  --pm-yellow-2: #fff4c9;
  --pm-grey-1: #f3f3f3;
  --pm-grey-2: #e8e8e8;
  --pm-grey-3: #d9d9d9;
  --pm-grey-4: #9e9e9e;

  --ui-bg: #ffffff;
  --ui-border: #e8e8e8;
  --ui-text: #1a1a1a;
  --ui-muted: #6b6b6b;
  --panel-width: 320px;

  --font-body: 16px/22px "IBM Plex Sans", system-ui, sans-serif;
  --font-label: 14px/20px "IBM Plex Sans", system-ui, sans-serif;
  --font-headline: 20px/28px "IBM Plex Sans", system-ui, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  font: var(--font-body);
  color: var(--ui-text);
  background: var(--ui-bg);
  -webkit-font-smoothing: antialiased;
}

.app {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* Panel */
.panel {
  flex: 0 0 var(--panel-width);
  width: var(--panel-width);
  border-right: 1px solid var(--ui-border);
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--ui-bg);
  scroll-padding-top: var(--panel-sticky-height, 280px);
}

.panel__sticky {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--ui-bg);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.panel__header {
  padding: 20px 20px 12px;
  border-bottom: 1px solid var(--ui-border);
  background: var(--ui-bg);
}

.panel__title {
  margin: 0;
  font: 600 var(--font-headline);
  letter-spacing: -0.02em;
}

.panel__subtitle {
  margin: 4px 0 0;
  font: var(--font-label);
  color: var(--ui-muted);
}

/* Start / Ende switcher */
.state-switcher--sidebar {
  padding: 16px 20px 20px;
  border-bottom: 2px solid var(--ui-border);
  background: var(--pm-grey-1);
}

.state-switcher__label {
  margin: 0 0 10px;
  font: 600 11px/16px "IBM Plex Sans", system-ui, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ui-muted);
}

.state-switcher__toggle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  padding: 4px;
  background: white;
  border: 1px solid var(--ui-border);
  border-radius: 10px;
}

.state-switcher__btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 12px 8px;
  border: 2px solid transparent;
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.state-switcher__btn:hover {
  background: var(--pm-grey-1);
}

.state-switcher__btn-title {
  font: 600 18px/22px "IBM Plex Sans", system-ui, sans-serif;
  letter-spacing: -0.02em;
}

.state-switcher__btn-sub {
  font: 400 11px/14px "IBM Plex Sans", system-ui, sans-serif;
  color: var(--ui-muted);
}

.state-switcher__btn.is-active[data-mode="start"] {
  background: var(--pm-blue);
  border-color: var(--pm-blue);
  box-shadow: 0 2px 8px rgba(24, 20, 255, 0.25);
}

.state-switcher__btn.is-active[data-mode="start"] .state-switcher__btn-title,
.state-switcher__btn.is-active[data-mode="start"] .state-switcher__btn-sub {
  color: white;
}

.state-switcher__btn.is-active[data-mode="end"] {
  background: var(--pm-turkis-1);
  border-color: #5ce0cc;
  box-shadow: 0 2px 8px rgba(118, 242, 225, 0.4);
}

.state-switcher__btn.is-active[data-mode="end"] .state-switcher__btn-title {
  color: #0a3d36;
}

.state-switcher__btn.is-active[data-mode="end"] .state-switcher__btn-sub {
  color: rgba(10, 61, 54, 0.75);
}

.state-switcher__active {
  margin: 12px 0 0;
  font: var(--font-label);
  color: var(--ui-text);
  text-align: center;
}

.state-switcher__active strong {
  font-weight: 600;
}

.panel.is-editing-start .state-switcher__active strong {
  color: var(--pm-blue);
}

.panel.is-editing-end .state-switcher__active strong {
  color: #0a8a78;
}

.state-switcher__actions {
  margin-top: 10px;
  text-align: center;
}

.state-switcher__stack {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--ui-border);
}

.state-switcher__stack-label {
  display: block;
  margin-bottom: 8px;
  font: var(--font-label);
  color: var(--ui-muted);
}

.stack-picker {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.stack-picker__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 10px;
  font: 500 var(--font-label);
  border: 1px solid var(--ui-border);
  border-radius: 8px;
  background: white;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}

.stack-picker__btn:hover {
  border-color: var(--pm-blue);
}

.stack-picker__btn.is-active {
  background: var(--pm-blue);
  border-color: var(--pm-blue);
  color: white;
}

.stack-picker__icon {
  font-size: 14px;
  line-height: 1;
}

/* Controls area tinted by active state */
.panel__controls {
  border-left: 4px solid transparent;
  transition: border-color 0.2s, background 0.2s;
}

.panel.is-editing-start .panel__controls {
  border-left-color: var(--pm-blue);
  background: linear-gradient(90deg, rgba(24, 20, 255, 0.04) 0%, transparent 120px);
}

.panel.is-editing-end .panel__controls {
  border-left-color: var(--pm-turkis-1);
  background: linear-gradient(90deg, rgba(118, 242, 225, 0.12) 0%, transparent 120px);
}

.btn--small {
  font-size: 12px;
  padding: 5px 12px;
}

.panel__section {
  padding: 16px 20px;
  border-bottom: 1px solid var(--ui-border);
}

.panel__section--global {
  background: var(--pm-grey-1);
}

.panel__headline {
  margin: 0 0 12px;
  font: 600 14px/20px "IBM Plex Sans", system-ui, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ui-muted);
}

.panel__hint {
  margin: 8px 0 0;
  font: var(--font-label);
  color: var(--ui-muted);
}

/* Controls */
.control {
  display: block;
  margin-bottom: 12px;
}

.control:last-child {
  margin-bottom: 0;
}

.control__label {
  display: flex;
  justify-content: space-between;
  font: var(--font-label);
  margin-bottom: 6px;
}

.control__label output {
  font-variant-numeric: tabular-nums;
  color: var(--pm-blue);
}

input[type="range"] {
  width: 100%;
  height: 4px;
  appearance: none;
  background: var(--pm-grey-2);
  border-radius: 2px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--pm-blue);
  border: 2px solid white;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
  cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--pm-blue);
  border: 2px solid white;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
  cursor: pointer;
}

.control-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* Buttons */
.btn {
  font: 500 var(--font-label);
  padding: 6px 14px;
  border-radius: 16px;
  border: 1px solid var(--ui-border);
  background: white;
  color: var(--ui-text);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}

.btn:hover {
  border-color: var(--pm-blue);
}

.btn.is-active,
.btn--primary {
  background: var(--pm-blue);
  border-color: var(--pm-blue);
  color: white;
}

.btn--ghost.is-active {
  background: var(--pm-blue);
  color: white;
}

.focus-picker .btn {
  flex: 1;
  text-align: center;
}

.grid-picker .btn {
  flex: 1;
  min-width: 56px;
  text-align: center;
}

/* Animation mode toggles */
.anim-toggle {
  margin-bottom: 8px;
}

.anim-toggle__btn {
  width: 100%;
  padding: 10px 14px;
  font: 500 var(--font-label);
  text-align: left;
  border: 1px solid var(--ui-border);
  border-radius: 8px;
  background: white;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}

.anim-toggle__btn:hover {
  border-color: var(--pm-blue);
}

.anim-toggle__btn.is-active,
.anim-toggle__btn[aria-pressed="true"] {
  background: var(--pm-blue);
  border-color: var(--pm-blue);
  color: white;
}

.anim-toggle .panel__hint {
  margin-top: 6px;
  margin-bottom: 0;
}

.anim-sub {
  margin: 0 0 14px 12px;
  padding-left: 12px;
  border-left: 2px solid var(--pm-grey-2);
}

.anim-sub[hidden] {
  display: none;
}

/* Swatches */
.swatches {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}

.swatches--compact {
  margin-bottom: 0;
}

.swatch {
  width: 28px;
  height: 28px;
  padding: 0;
  border: 2px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  transition: transform 0.1s, border-color 0.15s;
}

.swatch:hover {
  transform: scale(1.08);
}

.swatch.is-active {
  border-color: var(--pm-blue);
  box-shadow: 0 0 0 1px white inset;
}

.swatch--transparent {
  background:
    linear-gradient(45deg, var(--pm-grey-3) 25%, transparent 25%),
    linear-gradient(-45deg, var(--pm-grey-3) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--pm-grey-3) 75%),
    linear-gradient(-45deg, transparent 75%, var(--pm-grey-3) 75%);
  background-size: 8px 8px;
  background-position: 0 0, 0 4px, 4px -4px, -4px 0;
}

/* Workspace */
.workspace {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--pm-grey-1);
  overflow: hidden;
  padding: 24px;
}

.workspace__toolbar {
  position: absolute;
  top: 20px;
  right: 24px;
  z-index: 10;
  display: flex;
  gap: 8px;
  padding: 8px;
  background: white;
  border: 1px solid var(--ui-border);
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.btn--playback {
  font-weight: 600;
}

.btn--icon.btn--playback {
  min-width: 44px;
  width: 44px;
  height: 44px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn__icon {
  display: block;
  flex-shrink: 0;
}

.workspace.is-playing .btn--playback#play {
  opacity: 0.45;
}

.workspace.is-playing .btn--playback#pause {
  border-color: var(--pm-blue);
  color: var(--pm-blue);
  background: rgba(24, 20, 255, 0.06);
}

.workspace.is-paused .btn--playback#pause {
  border-color: var(--pm-blue);
  color: var(--pm-blue);
}

.canvas-wrap {
  position: relative;
  max-width: 100%;
  max-height: 100%;
  box-shadow: 0 2px 24px rgba(0, 0, 0, 0.08);
  line-height: 0;
}

.canvas-wrap canvas {
  display: block;
  max-width: 100%;
  max-height: calc(100vh - 48px);
  width: auto;
  height: auto;
}

.canvas-wrap--transparent {
  background:
    linear-gradient(45deg, var(--pm-grey-3) 25%, transparent 25%),
    linear-gradient(-45deg, var(--pm-grey-3) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--pm-grey-3) 75%),
    linear-gradient(-45deg, transparent 75%, var(--pm-grey-3) 75%);
  background-size: 16px 16px;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0;
}

.control--check {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

.control--check input {
  width: auto;
}

@media (max-width: 900px) {
  .app {
    flex-direction: column;
  }

  .panel {
    flex: 0 0 auto;
    width: 100%;
    max-height: 45vh;
    border-right: none;
    border-bottom: 1px solid var(--ui-border);
  }
}