/* Call Button */
.call-button {
  position: relative;
}

.call-button--active {
  --btn-background: var(--color-positive);
  --btn-border-color: transparent;
}

.call-button--active img {
  filter: invert(100%);

  @media (prefers-color-scheme: dark) {
    filter: invert(0);
  }
}

.call-button--in-call {
  --btn-background: var(--color-positive);
  --btn-border-color: transparent;
}

.call-button__count {
  position: absolute;
  top: -0.25em;
  right: -0.25em;
  background: var(--color-negative);
  color: var(--color-text-reversed);
  font-size: 0.7em;
  font-weight: 700;
  min-width: 1.4em;
  height: 1.4em;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.15em;
}

/* Call PiP Panel */
.call-pip {
  position: fixed;
  bottom: 1rem;
  right: 1rem;
  width: 320px;
  background: var(--color-bg);
  border: 1px solid var(--color-border-darker);
  border-radius: 0.75rem;
  box-shadow: 0 4px 24px oklch(0% 0 0 / 0.15);
  z-index: 1000;
  display: none;
  flex-direction: column;
  overflow: hidden;

  @media (prefers-color-scheme: dark) {
    box-shadow: 0 4px 24px oklch(0% 0 0 / 0.4);
  }
}

.call-pip--active {
  display: flex;
}

/* Mini state */
.call-pip--mini {
  width: auto;
  min-width: 180px;

  .call-pip__video-grid {
    display: none;
  }

  .call-pip__controls {
    padding: 0.5rem;
    gap: 0.25rem;
  }

  .call-pip__minimize-icon {
    display: none;
  }

  .call-pip__maximize-icon {
    display: block;
  }
}

.call-pip:not(.call-pip--mini) {
  .call-pip__minimize-icon {
    display: block;
  }

  .call-pip__maximize-icon {
    display: none;
  }
}

/* Header */
.call-pip__header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem;
  background: var(--color-text);
  color: var(--color-text-reversed);
  cursor: grab;
  user-select: none;

  &:active {
    cursor: grabbing;
  }
}

.call-pip__duration {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.call-pip__participant-count {
  flex: 1;
  font-size: 0.875rem;
  opacity: 0.8;
}

.call-pip__toggle-size {
  --btn-size: 1.75em;
  --btn-background: transparent;
  --btn-border-color: transparent;

  img {
    filter: invert(100%);

    @media (prefers-color-scheme: dark) {
      filter: invert(0);
    }
  }
}

/* Video Grid */
.call-pip__video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.25rem;
  padding: 0.25rem;
  background: var(--color-border);
  max-height: 300px;
  overflow-y: auto;
}

.call-pip__participants {
  display: contents;
}

/* Participant */
.call-participant {
  position: relative;
  aspect-ratio: 16/9;
  background: var(--color-text);
  border-radius: 0.375rem;
  overflow: hidden;
}

.call-participant--local {
  order: -1;
}

.call-participant--no-video {
  .call-participant__media video {
    display: none;
  }

  &::before {
    content: "";
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, oklch(30% 0.05 250), oklch(20% 0.03 250));
  }
}

.call-participant__media {
  position: absolute;
  inset: 0;

  video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
  }

  audio {
    display: none;
  }
}

.call-participant__name {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.25rem 0.5rem;
  background: linear-gradient(transparent, oklch(0% 0 0 / 0.6));
  color: white;
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Controls */
.call-pip__controls {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem;
  background: var(--color-bg);
}

.call-control {
  --btn-size: 2.5em;
  --btn-background: var(--color-border);
  --btn-border-color: transparent;
  position: relative;
}

.call-control__on-icon {
  display: block;
}

.call-control__off-icon {
  display: none;
}

.call-control--muted,
.call-control--off {
  --btn-background: var(--color-negative);

  .call-control__on-icon {
    display: none;
  }

  .call-control__off-icon {
    display: block;
    filter: invert(100%);

    @media (prefers-color-scheme: dark) {
      filter: invert(0);
    }
  }
}

.call-control--active {
  --btn-background: var(--color-positive);

  img {
    filter: invert(100%);

    @media (prefers-color-scheme: dark) {
      filter: invert(0);
    }
  }
}

.call-control--leave {
  --btn-background: var(--color-negative);

  img {
    filter: invert(100%);

    @media (prefers-color-scheme: dark) {
      filter: invert(0);
    }
  }
}

/* Responsive adjustments */
@media (max-width: 480px) {
  .call-pip {
    width: calc(100vw - 2rem);
    max-width: 320px;
  }

  .call-pip--mini {
    width: auto;
    min-width: 160px;
  }
}

/* Call Indicator (sidebar) */
.call-indicator {
  display: none;
  align-items: center;
  margin-left: auto;
  color: var(--color-positive);
  animation: call-indicator-pulse 1.5s ease-in-out infinite;
}

.call-indicator--active {
  display: flex;
}

.call-indicator__icon {
  filter: invert(48%) sepia(79%) saturate(400%) hue-rotate(90deg) brightness(95%) contrast(90%);
}

@keyframes call-indicator-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}