/* ==========================================================================
   Peerly Draw — Layout (Material 3)
   ========================================================================== */

/* ==========================================================================
   TOP APP BAR
   ========================================================================== */

.header {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--md-sys-page-padding);
  background: var(--md-sys-color-surface-container);
  color: var(--md-sys-color-on-surface);
  position: relative;
  z-index: 100;
  transition: background-color var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-standard);
}

.header__left {
  display: flex;
  align-items: center;
  gap: var(--md-sys-spacing-1);
  min-width: 0;
}

.header__menu {
  display: none;
}

.header__logo {
  font-size: var(--md-sys-typescale-title-large-size);
  line-height: var(--md-sys-typescale-title-large-line);
  font-weight: 500;
  letter-spacing: -0.01em;
  white-space: nowrap;
  color: var(--md-sys-color-on-surface);
}
.header__logo span {
  color: var(--md-sys-color-primary);
}

.header__room-code {
  font-family: var(--md-sys-typescale-mono);
  font-size: var(--md-sys-typescale-label-large-size);
  font-weight: var(--md-sys-typescale-label-large-weight);
  letter-spacing: 0.08em;
  color: var(--md-sys-color-on-surface-variant);
  padding: var(--md-sys-spacing-half) var(--md-sys-spacing-1);
  background: var(--md-sys-color-surface-container-high);
  border-radius: var(--md-sys-shape-sm);
  white-space: nowrap;
}

.header__right {
  display: flex;
  align-items: center;
  gap: var(--md-sys-spacing-half);
  flex-shrink: 0;
}

.header__e2ee {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--md-sys-shape-full);
  background: var(--md-sys-color-success-container);
  color: var(--md-sys-color-on-success-container);
  font-size: 18px;
  flex-shrink: 0;
}

/* ==========================================================================
   APP SHELL
   ========================================================================== */

.app {
  display: flex;
  height: calc(100vh - 64px);
  height: calc(100dvh - 64px);
}

/* ==========================================================================
   NAVIGATION DRAWER (standard en expanded, modal en compact)
   ========================================================================== */

.sidebar {
  width: 280px;
  min-width: 280px;
  height: 100%;
  background: var(--md-sys-color-surface-container-low);
  color: var(--md-sys-color-on-surface);
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--md-sys-spacing-1half) var(--md-sys-spacing-1half);
  display: flex;
  flex-direction: column;
  gap: var(--md-sys-spacing-1);
  overscroll-behavior: contain;
  transition:
    background-color var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-standard),
    transform var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-emphasized);
}

.sidebar--hidden {
  display: none;
}

.sidebar__section {
  display: flex;
  flex-direction: column;
  gap: var(--md-sys-spacing-half);
  padding: var(--md-sys-spacing-1) var(--md-sys-spacing-1);
}

.sidebar__label {
  font-size: var(--md-sys-typescale-label-medium-size);
  line-height: var(--md-sys-typescale-label-medium-line);
  font-weight: var(--md-sys-typescale-label-medium-weight);
  letter-spacing: var(--md-sys-typescale-label-medium-tracking);
  color: var(--md-sys-color-on-surface-variant);
  padding: 0 var(--md-sys-spacing-1);
  margin-bottom: var(--md-sys-spacing-half);
}

/* Room code card */
.sidebar__room {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--md-sys-color-surface-container-high);
  border-radius: var(--md-sys-shape-md);
  padding: var(--md-sys-spacing-1) var(--md-sys-spacing-1half);
  gap: var(--md-sys-spacing-1);
  transition: background-color var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}

.sidebar__room-code {
  font-family: var(--md-sys-typescale-mono);
  font-size: var(--md-sys-typescale-title-medium-size);
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--md-sys-color-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sidebar__e2ee {
  display: flex;
  align-items: center;
  gap: var(--md-sys-spacing-half);
  padding: var(--md-sys-spacing-half) var(--md-sys-spacing-1);
  font-size: var(--md-sys-typescale-label-medium-size);
  color: var(--md-sys-color-success);
}
.sidebar__e2ee .material-symbols-outlined {
  font-size: 16px;
}

/* Participants */
.sidebar__peers {
  display: flex;
  flex-direction: column;
  gap: var(--md-sys-spacing-half);
}

/* Actions en bas */
.sidebar__actions {
  padding: var(--md-sys-spacing-1) var(--md-sys-spacing-1);
  display: flex;
  flex-direction: column;
  gap: var(--md-sys-spacing-1);
  margin-top: auto;
}

/* ==========================================================================
   SCRIM (modal drawer overlay)
   ========================================================================== */

.sidebar-overlay {
  position: fixed;
  inset: 0;
  background: color-mix(in srgb, var(--md-sys-color-scrim) 32%, transparent);
  z-index: 150;
  opacity: 0;
  transition: opacity var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-standard);
  pointer-events: none;
}
.sidebar-overlay--visible {
  opacity: 1;
  pointer-events: auto;
}

/* ==========================================================================
   CANVAS AREA
   ========================================================================== */

.canvas-area {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: var(--md-sys-color-surface);
  min-width: 0;
  transition: background-color var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-standard);
}

#canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: crosshair;
  display: block;
}

/* Empty state (M3 pattern) */
.canvas-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: var(--md-sys-spacing-2);
  padding: var(--md-sys-spacing-3);
  background: var(--md-sys-color-surface);
  z-index: 10;
}

.canvas-placeholder__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 96px;
  height: 96px;
  border-radius: var(--md-sys-shape-full);
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  margin-bottom: var(--md-sys-spacing-1);
}
.canvas-placeholder__icon .material-symbols-outlined {
  font-size: 48px;
}

.canvas-placeholder h2 {
  font-size: var(--md-sys-typescale-headline-small-size);
  line-height: var(--md-sys-typescale-headline-small-line);
  font-weight: var(--md-sys-typescale-headline-small-weight);
  color: var(--md-sys-color-on-surface);
}

.canvas-placeholder p {
  font-size: var(--md-sys-typescale-body-large-size);
  line-height: var(--md-sys-typescale-body-large-line);
  color: var(--md-sys-color-on-surface-variant);
  max-width: 400px;
}

.canvas-placeholder__actions {
  display: flex;
  gap: var(--md-sys-spacing-1);
  margin-top: var(--md-sys-spacing-1);
}

/* ==========================================================================
   PEER BADGE
   ========================================================================== */

.peer-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--md-sys-spacing-half);
  padding: var(--md-sys-spacing-half) var(--md-sys-spacing-1half);
  background: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface-variant);
  border-radius: var(--md-sys-shape-full);
  font-size: var(--md-sys-typescale-label-medium-size);
  font-weight: var(--md-sys-typescale-label-medium-weight);
}

.peer-badge__dot {
  width: 8px;
  height: 8px;
  border-radius: var(--md-sys-shape-full);
  background: var(--md-sys-color-success);
  flex-shrink: 0;
}