src/styles.css

:root {
  color-scheme: dark;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #eef3f8;
  background: #0d1117;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100svh;
  background: #0d1117;
}

button {
  font: inherit;
}

.app-shell {
  display: grid;
  grid-template-columns: minmax(300px, 380px) minmax(0, 1fr);
  height: 100svh;
  min-height: 100svh;
  overflow: hidden;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 22px;
  height: 100svh;
  min-height: 100svh;
  min-width: 0;
  padding: 28px;
  border-right: 1px solid #252d38;
  background: #111821;
  overflow: hidden;
}

.brand-block h1,
.viewer-header h2,
.section-heading h2 {
  margin: 0;
  letter-spacing: 0;
}

.brand-block h1 {
  margin-top: 4px;
  font-size: 30px;
  line-height: 1.05;
}

.subtle {
  margin: 10px 0 0;
  color: #9aa8b7;
  line-height: 1.6;
}

.eyebrow {
  margin: 0;
  color: #7dd3fc;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.section-heading span,
.file-meta {
  color: #8b99aa;
  font-size: 12px;
}

.auth-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.primary-button,
.ghost-button {
  min-height: 42px;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 0 14px;
  cursor: pointer;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease;
}

.primary-button {
  color: #071015;
  background: #7dd3fc;
  font-weight: 700;
}

.ghost-button {
  color: #d7e1eb;
  background: transparent;
  border-color: #334155;
}

.primary-button:hover,
.ghost-button:hover,
.file-row:hover {
  transform: translateY(-1px);
}

.primary-button:disabled,
.file-row:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
}

.notice {
  display: grid;
  gap: 6px;
  padding: 12px;
  border: 1px solid #334155;
  border-radius: 8px;
  background: #151f2b;
  color: #d9e4ee;
  font-size: 13px;
  line-height: 1.45;
}

.notice.error,
.error-banner {
  border-color: #7f1d1d;
  background: #2a1115;
  color: #fecaca;
}

.selector-grid {
  display: grid;
  grid-template-rows: minmax(140px, 0.8fr) minmax(180px, 1.2fr);
  flex: 1 1 auto;
  gap: 18px;
  min-height: 0;
}

.file-section,
.animation-panel {
  display: flex;
  min-height: 0;
  flex-direction: column;
  gap: 12px;
}

.animation-panel {
  flex: 0 0 auto;
  border-top: 1px solid #252d38;
  padding-top: 16px;
}

.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.section-heading h2 {
  font-size: 15px;
}

.search-input {
  width: 100%;
  min-height: 38px;
  border: 1px solid #263140;
  border-radius: 8px;
  padding: 0 11px;
  color: #eef3f8;
  background: #151f2b;
  font: inherit;
}

.search-input:focus {
  border-color: #7dd3fc;
  outline: 0;
}

.search-input:disabled {
  opacity: 0.55;
}

.file-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 0;
  overflow: auto;
  padding-right: 4px;
}

.file-row,
.list-row {
  width: 100%;
  min-height: 62px;
  border: 1px solid #263140;
  border-radius: 8px;
  padding: 10px 12px;
  text-align: left;
  background: #151f2b;
  color: #eef3f8;
}

.file-row {
  display: grid;
  grid-template-rows: auto auto;
  gap: 6px;
  cursor: pointer;
}

.file-row.active {
  border-color: #7dd3fc;
  background: #172536;
}

.file-row.compact {
  min-height: 68px;
  padding-top: 12px;
  padding-bottom: 12px;
}

.file-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.25;
}

.file-meta {
  display: block;
  line-height: 1.25;
}

.muted {
  display: grid;
  place-items: center;
  color: #8b99aa;
}

.viewer-shell {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  min-width: 0;
  height: 100svh;
  min-height: 100svh;
  background: #0d1117;
  overflow: hidden;
}

.viewer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 86px;
  padding: 22px 28px;
  border-bottom: 1px solid #252d38;
}

.viewer-header h2 {
  max-width: 70vw;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 20px;
}

.viewer-status {
  flex: 0 0 auto;
  border: 1px solid #334155;
  border-radius: 999px;
  padding: 6px 10px;
  color: #b7c5d5;
  font-size: 12px;
}

.viewer-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}

.segmented-control {
  display: inline-grid;
  grid-template-columns: repeat(2, minmax(58px, auto));
  overflow: hidden;
  border: 1px solid #334155;
  border-radius: 8px;
  background: #111821;
}

.segmented-control button {
  min-height: 34px;
  border: 0;
  border-right: 1px solid #334155;
  padding: 0 12px;
  color: #b7c5d5;
  background: transparent;
  cursor: pointer;
}

.segmented-control button:last-child {
  border-right: 0;
}

.segmented-control button.active {
  color: #071015;
  background: #7dd3fc;
  font-weight: 700;
}

.viewer-canvas {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 0;
  overflow: hidden;
}

.viewer-canvas canvas {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
}

.six-view-labels {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, 1fr);
  pointer-events: none;
  z-index: 1;
}

.six-view-labels span {
  align-self: start;
  justify-self: start;
  margin: 12px;
  border: 1px solid rgb(125 211 252 / 42%);
  border-radius: 999px;
  padding: 4px 9px;
  background: rgb(13 17 23 / 72%);
  color: #dff6ff;
  font-size: 12px;
  font-weight: 700;
}

.morph-frame-label {
  position: absolute;
  top: 18px;
  right: 18px;
  z-index: 2;
  border: 1px solid rgb(125 211 252 / 42%);
  border-radius: 8px;
  padding: 8px 10px;
  background: rgb(13 17 23 / 78%);
  color: #dff6ff;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.2;
  pointer-events: none;
}

.empty-state {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 8px;
  padding: 24px;
  color: #9aa8b7;
  text-align: center;
  pointer-events: none;
  z-index: 1;
}

.empty-state strong {
  color: #eef3f8;
  font-size: 18px;
}

.error-banner {
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 20px;
  border: 1px solid;
  border-radius: 8px;
  padding: 12px;
  z-index: 2;
}

.loading-overlay {
  position: fixed;
  right: 24px;
  bottom: 24px;
  border: 1px solid #334155;
  border-radius: 8px;
  padding: 12px 14px;
  background: #151f2b;
  color: #eef3f8;
  box-shadow: 0 16px 44px rgb(0 0 0 / 32%);
}

@media (max-width: 820px) {
  .app-shell {
    grid-template-columns: 1fr;
    grid-template-rows: auto minmax(520px, 1fr);
    height: auto;
    overflow: visible;
  }

  .sidebar {
    height: auto;
    min-height: auto;
    max-height: 48svh;
    padding: 20px;
    border-right: 0;
    border-bottom: 1px solid #252d38;
  }

  .brand-block h1 {
    font-size: 25px;
  }

  .viewer-shell {
    height: 52svh;
    min-height: 520px;
  }

  .viewer-header {
    align-items: flex-start;
    flex-direction: column;
    min-height: 74px;
    padding: 16px 20px;
  }

  .viewer-header h2 {
    max-width: 92vw;
    font-size: 17px;
  }

  .viewer-actions {
    width: 100%;
    justify-content: space-between;
  }
}