* {
  margin: 0;
  padding: 0;
}

:root {
  --bg: #0a0a0a;
  --text: #fff;
  --text-muted: rgba(255, 255, 255, 0.5);
  --surface: rgba(255, 255, 255, 0.08);
  --surface-hover: rgba(255, 255, 255, 0.15);
  --overlay: rgba(0, 0, 0, 0.85);
  --control-bg: #f0f0f0;
  --control-text: #1b1c1d;
  --control-text-muted: rgba(0, 0, 0, 0.35);
  --control-hover: #e4e4e4;
}

[data-theme="light"] {
  --bg: #f5f5f5;
  --text: #111;
  --text-muted: rgba(0, 0, 0, 0.5);
  --surface: rgba(0, 0, 0, 0.06);
  --surface-hover: rgba(0, 0, 0, 0.1);
  --overlay: rgba(0, 0, 0, 0.85);
  --control-bg: #1b1c1d;
  --control-text: #f0f0f0;
  --control-text-muted: rgba(255, 255, 255, 0.35);
  --control-hover: #2a2a2a;
}

body {
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

#viewport {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  cursor: grab;
}

#viewport.grabbing {
  cursor: grabbing;
}

body.layout-grid #viewport,
body.layout-feed #viewport {
  cursor: default;
}

body.layout-grid #viewport.grabbing,
body.layout-feed #viewport.grabbing {
  cursor: ns-resize;
}

#container {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

#grid {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.grid-item {
  position: absolute;
  overflow: hidden;
  will-change: transform;
  user-select: none;
  backface-visibility: hidden;
  border-radius: 12px;
  transition: opacity 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              filter 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.grid-item img:not(.play-pill-icon) {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  pointer-events: none;
  border-radius: 12px;
  transition: filter 0.15s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

@media (hover: hover) {
  .grid-item:hover:not(.lightbox-active) img {
    filter: brightness(1.08);
  }
}

/* --- Edit mode overlay on hidden posts --- */

.grid-item-hidden-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.6);
  border-radius: 12px;
  color: rgba(255, 255, 255, 0.5);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.grid-item.hidden-post .grid-item-hidden-overlay {
  opacity: 1;
}

.grid-item.hidden-post img {
  filter: brightness(0.4) saturate(0.3);
}

.edit-mode .grid-item {
  cursor: pointer;
}

@media (hover: hover) {
  .edit-mode .grid-item:hover img {
    filter: brightness(0.85);
  }

  .edit-mode .grid-item.hidden-post:hover img {
    filter: brightness(0.5) saturate(0.5);
  }
}

/* --- Video badge on grid items --- */

.grid-item-video-badge {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 15%;
  min-width: 28px;
  max-width: 48px;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.grid-item-video-badge svg {
  width: 100%;
  height: 100%;
}

/* --- Profile Header --- */

.profile-header {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 50;
  text-align: center;
  text-decoration: none;
  color: var(--control-text);
  padding: 0 4px;
  height: 35px;
  background: var(--control-bg);
  border: none;
  border-radius: 100px;
  transition: background 0.15s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              opacity 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 90vw;
  user-select: none;
}

@media (hover: hover) {
  .profile-header:hover {
    background: var(--control-hover);
  }
}

.profile-handle {
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  letter-spacing: -0.01em;
  pointer-events: none;
  padding: 0 14px;
}

/* --- Toolbar --- */

.toolbar {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: opacity 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* Fade controls when lightbox is open */
body.lightbox-open .profile-header,
body.lightbox-open .toolbar {
  opacity: 0;
  pointer-events: none;
}

.toolbar-group {
  display: flex;
  gap: 2px;
  padding: 4px;
  background: var(--control-bg);
  border: none;
  border-radius: 100px;
  align-items: center;
  height: 35px;
  box-sizing: border-box;
  user-select: none;
}

.toolbar-btn {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 100px;
  background: transparent;
  color: var(--control-text-muted);
  cursor: pointer;
  transition: background 0.15s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              color 0.15s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  padding: 0;
}

.toolbar-btn img {
  width: 18px;
  height: 18px;
  opacity: 0.35;
  transition: opacity 0.15s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* Dark mode: control bg is light, so icons stay black (no filter) */
[data-theme="dark"] .toolbar-btn img,
:root:not([data-theme]) .toolbar-btn img {
  filter: none;
}

/* Light mode: control bg is dark, so icons invert to white */
[data-theme="light"] .toolbar-btn img {
  filter: invert(1);
}

@media (hover: hover) {
  .toolbar-btn:hover {
    color: var(--control-text);
  }

  .toolbar-btn:hover img {
    opacity: 0.8;
  }
}

.toolbar-btn.active {
  background: var(--control-hover);
  color: var(--control-text);
}

.toolbar-btn.active img {
  opacity: 0.9;
}

/* Edit button grow animation */
#edit-toggle.active {
  animation: editGrow 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

@keyframes editGrow {
  0% { transform: scale(1); }
  40% { transform: scale(1.15); }
  100% { transform: scale(1); }
}

.edit-counter {
  font-size: 11px;
  color: var(--control-text-muted);
  white-space: nowrap;
  user-select: none;
  pointer-events: none;
  font-variant-numeric: tabular-nums;
  display: inline-block;
  overflow: hidden;
  max-width: 0;
  padding: 0;
  opacity: 0;
  transition: max-width 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              padding 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              opacity 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.edit-counter.visible {
  max-width: 60px;
  padding: 0 8px 0 4px;
  opacity: 1;
}

/* --- Lightbox --- */

.lightbox-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(6px);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.lightbox-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 24px;
  z-index: 102;
  width: 35px;
  height: 35px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 0.3s ease, transform 0.3s ease, background 0.15s ease;
  backdrop-filter: blur(8px);
}

.lightbox-overlay.active .lightbox-close {
  opacity: 1;
  transform: scale(1);
  transition-delay: 0.2s;
}

@media (hover: hover) {
  .lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
  }
}

.lightbox-info {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: #fff;
  max-width: 640px;
}

.lightbox-title {
  font-size: 15px;
  font-weight: 400;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
  max-width: 640px;
  line-height: 1.4;
  color: rgba(255, 255, 255, 0.7);
  text-wrap: pretty;
}

.lightbox-view-btn {
  font-size: 13px;
  font-weight: 500;
  color: #fff;
  text-decoration: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  transition: opacity 0.15s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  display: inline-block;
}

@media (hover: hover) {
  .lightbox-view-btn:hover {
    opacity: 0.7;
  }
}

.grid-item.lightbox-active {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 101;
  pointer-events: none;
  overflow: hidden;
  will-change: transform, width, height;
}

.grid-item.lightbox-active img {
  pointer-events: none;
}