:root {
  color-scheme: light;
  --bg: #f5f2ec;
  --ink: #1f2423;
  --muted: #66706c;
  --line: #d9d2c7;
  --panel: #fffaf2;
  --panel-strong: #ffffff;
  --accent: #16a085;
  --accent-dark: #0b6d61;
  --shadow: 0 24px 60px rgba(45, 39, 28, 0.18);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
}

button,
input,
textarea,
select {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  cursor: pointer;
}

.app-shell {
  display: grid;
  grid-template-columns: minmax(320px, 420px) 1fr;
  min-height: 100vh;
}

.control-panel {
  display: flex;
  flex-direction: column;
  gap: 18px;
  height: 100vh;
  min-width: 0;
  padding: 24px;
  overflow-y: auto;
  border-right: 1px solid var(--line);
  background: var(--panel);
}

.brand-strip {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  min-width: 0;
}

.brand-actions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

.brand-strip > div:first-child {
  min-width: 0;
}

.language-switcher {
  display: inline-grid;
  grid-template-columns: repeat(2, minmax(34px, 1fr));
  gap: 3px;
  min-height: 38px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ece4d8;
}

.language-button {
  min-width: 34px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-size: 12px;
  font-weight: 850;
}

.language-button.active {
  background: var(--panel-strong);
  color: var(--ink);
  box-shadow: 0 2px 8px rgba(45, 39, 28, 0.08);
}

.creator-card {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 14px;
  align-items: center;
  min-width: 0;
  padding: 12px;
  border: 1px solid color-mix(in srgb, var(--accent) 24%, var(--line));
  border-radius: 8px;
  background: var(--panel-strong);
  box-shadow: 0 10px 24px rgba(45, 39, 28, 0.08);
}

.creator-logo {
  width: 76px;
  height: 76px;
  object-fit: contain;
  border-radius: 8px;
  background: #fff;
}

.creator-copy {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.creator-copy .eyebrow {
  margin-bottom: 0;
}

.creator-copy strong,
.creator-copy span {
  display: block;
}

.creator-copy strong {
  color: var(--ink);
  font-size: 15px;
  line-height: 1.25;
}

.creator-copy span {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.creator-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  width: fit-content;
  min-height: 28px;
  padding: 0 10px;
  margin-top: 3px;
  border-radius: 6px;
  background: var(--ink);
  color: white;
  font-size: 12px;
  font-weight: 850;
  text-decoration: none;
}

.creator-link svg {
  width: 14px;
  height: 14px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 28px;
  line-height: 1.12;
}

h2 {
  font-size: 16px;
}

.panel-section {
  display: grid;
  gap: 14px;
}

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

.section-heading.compact-heading {
  align-items: baseline;
}

.section-heading span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

h3 {
  margin: 0;
  font-size: 14px;
}

.drop-zone {
  display: grid;
  place-items: center;
  gap: 8px;
  min-height: 150px;
  padding: 18px;
  border: 1.5px dashed color-mix(in srgb, var(--accent) 55%, var(--line));
  border-radius: 8px;
  background: var(--panel-strong);
  color: var(--muted);
  text-align: center;
  transition:
    border-color 160ms ease,
    transform 160ms ease,
    box-shadow 160ms ease;
}

.drop-zone:hover,
.drop-zone.dragging {
  border-color: var(--accent);
  box-shadow: 0 10px 30px rgba(22, 160, 133, 0.16);
  transform: translateY(-1px);
}

.drop-zone input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.drop-zone svg {
  width: 32px;
  height: 32px;
  color: var(--accent-dark);
}

.drop-zone strong {
  color: var(--ink);
  font-size: 15px;
}

.drop-zone span {
  max-width: 220px;
  font-size: 13px;
  line-height: 1.45;
}

.field,
.range-field {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 750;
}

.field textarea,
.field input[type="text"],
.field input[type="color"] {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-strong);
  color: var(--ink);
}

.field input[type="text"] {
  min-height: 38px;
  padding: 0 12px;
}

.field textarea {
  resize: vertical;
  min-height: 118px;
  padding: 12px;
  line-height: 1.45;
}

.field textarea:focus,
.field input:focus,
.range-field input:focus-visible,
.segment:focus-visible,
button:focus-visible,
a:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 35%, transparent);
  outline-offset: 2px;
}

.field.compact {
  grid-template-columns: 1fr 52px;
  align-items: center;
}

.field input[type="color"] {
  height: 38px;
  padding: 3px;
}

.background-panel {
  display: grid;
  gap: 10px;
}

.background-upload {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 38px;
  padding: 0 12px;
  border: 1px dashed color-mix(in srgb, var(--accent) 55%, var(--line));
  border-radius: 8px;
  background: var(--panel-strong);
  color: var(--ink);
  font-size: 13px;
  font-weight: 850;
  cursor: pointer;
}

.background-upload:hover {
  border-color: var(--accent);
}

.background-upload input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.background-upload svg {
  width: 17px;
  height: 17px;
  color: var(--accent-dark);
}

.option-field {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 750;
}

.segmented {
  display: grid;
  gap: 6px;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ece4d8;
}

.ratio-segmented {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.two-segmented {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.segment {
  min-height: 36px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-weight: 800;
}

.segment.active {
  background: var(--panel-strong);
  color: var(--ink);
  box-shadow: 0 2px 8px rgba(45, 39, 28, 0.08);
}

.range-field span {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.range-field output {
  color: var(--ink);
}

.range-field input {
  width: 100%;
  accent-color: var(--accent);
}

.page-list {
  display: grid;
  gap: 8px;
  min-height: 112px;
  max-height: 250px;
  overflow: auto;
}

.page-card {
  position: relative;
  display: grid;
  grid-template-columns: 26px 52px 1fr auto;
  gap: 10px;
  align-items: center;
  min-height: 64px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-strong);
  cursor: grab;
  transition:
    border-color 140ms ease,
    box-shadow 140ms ease,
    transform 140ms ease;
}

.page-card:active {
  cursor: grabbing;
}

.page-card.selected {
  border-color: color-mix(in srgb, var(--accent) 68%, var(--line));
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 18%, transparent);
}

.page-card.dragging {
  opacity: 0.52;
  transform: scale(0.985);
}

.page-card.drop-before::before,
.page-card.drop-after::after {
  position: absolute;
  left: 8px;
  right: 8px;
  height: 3px;
  border-radius: 99px;
  background: var(--accent);
  content: "";
}

.page-card.drop-before::before {
  top: -6px;
}

.page-card.drop-after::after {
  bottom: -6px;
}

.drag-handle {
  display: grid;
  place-items: center;
  width: 26px;
  height: 38px;
  border: 0;
  background: transparent;
  color: color-mix(in srgb, var(--muted) 72%, transparent);
  cursor: grab;
}

.drag-handle svg {
  width: 17px;
  height: 17px;
}

.page-thumb {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  overflow: hidden;
  border-radius: 6px;
  background: #ede6dc;
  color: var(--muted);
}

.page-thumb img,
.page-thumb video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-meta {
  min-width: 0;
}

.page-meta strong,
.page-meta span {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.page-meta strong {
  font-size: 13px;
}

.page-meta span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}

.icon-button,
.mini-button,
.text-button,
.secondary-button,
.primary-button,
.download-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 38px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 850;
}

.icon-button {
  width: 40px;
  border: 1px solid var(--line);
  background: var(--panel-strong);
  color: var(--ink);
}

.mini-button {
  min-height: 32px;
  padding: 0 10px;
  border: 1px solid var(--line);
  background: var(--panel-strong);
  color: var(--muted);
  font-size: 12px;
}

.text-button,
.secondary-button {
  border: 1px solid var(--line);
  background: var(--panel-strong);
  color: var(--ink);
}

.text-button {
  width: 100%;
}

.primary-button {
  border: 0;
  background: var(--accent);
  color: white;
  box-shadow: 0 12px 24px rgba(22, 160, 133, 0.24);
}

.primary-button:disabled,
.secondary-button:disabled {
  cursor: wait;
  opacity: 0.65;
}

.icon-button svg,
.mini-button svg,
.text-button svg,
.secondary-button svg,
.primary-button svg,
.download-link svg {
  width: 17px;
  height: 17px;
  flex: 0 0 auto;
}

.action-bar {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 10px;
  padding-top: 4px;
  margin-top: auto;
}

.stage-wrap {
  position: relative;
  min-width: 0;
  min-height: 100vh;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(31, 36, 35, 0.96), rgba(23, 42, 45, 0.93)),
    radial-gradient(circle at top left, color-mix(in srgb, var(--accent) 34%, transparent), transparent 44%);
}

#flipCanvas {
  display: block;
  width: 100%;
  height: 100%;
}

.stage-toolbar {
  position: absolute;
  z-index: 3;
  top: 22px;
  left: 24px;
  right: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  pointer-events: none;
}

.stage-toolbar p {
  margin-bottom: 4px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
  font-weight: 750;
}

.stage-toolbar strong {
  color: white;
  font-size: 18px;
}

.download-link {
  padding: 0 14px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
  pointer-events: auto;
}

.empty-state {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 14px;
  padding: 30px;
  color: rgba(31, 36, 35, 0.88);
  text-align: center;
  pointer-events: none;
}

.empty-state svg {
  width: 56px;
  height: 56px;
  color: rgba(31, 36, 35, 0.9);
  filter: drop-shadow(0 1px 3px rgba(255, 255, 255, 0.72));
}

.empty-state span {
  max-width: 330px;
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.58);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.74);
  box-shadow: 0 10px 28px rgba(31, 36, 35, 0.12);
  line-height: 1.55;
  font-weight: 750;
  backdrop-filter: blur(10px);
}

.hidden {
  display: none !important;
}

@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .control-panel {
    height: auto;
    max-height: none;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .stage-wrap {
    min-height: 68vh;
  }
}

@media (max-width: 560px) {
  .control-panel {
    padding: 18px;
  }

  .brand-strip {
    flex-direction: column;
  }

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

  .creator-card {
    grid-template-columns: 64px 1fr;
  }

  .creator-logo {
    width: 64px;
    height: 64px;
  }

  h1 {
    font-size: 24px;
  }

  .action-bar {
    grid-template-columns: 1fr;
  }

  .ratio-segmented {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .segment {
    font-size: 12px;
  }

  .stage-toolbar {
    top: 14px;
    left: 14px;
    right: 14px;
    align-items: flex-start;
  }

  .download-link {
    min-width: 42px;
    padding: 0 10px;
  }

  .download-link svg {
    margin: 0;
  }
}