:root {
  --bg: #f5efe5;
  --bg-accent: #e2d4bb;
  --panel: #fff9f0;
  --ink: #2e2a24;
  --muted: #7b7267;
  --line: #d8c6aa;
  --primary: #1f6f78;
  --primary-ink: #f4ffff;
  --danger: #9f3025;
  --shadow: 0 10px 30px rgba(46, 42, 36, 0.13);
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Space Grotesk", sans-serif;
  background:
    radial-gradient(circle at 20% 0%, rgba(255, 255, 255, 0.7), transparent 55%),
    radial-gradient(circle at 80% 30%, rgba(31, 111, 120, 0.22), transparent 50%),
    linear-gradient(160deg, var(--bg), var(--bg-accent));
  overflow: hidden;
}

.topbar {
  position: relative;
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 1.2rem;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 249, 240, 0.85);
  backdrop-filter: blur(6px);
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.brand h1 {
  margin: 0;
  font-size: clamp(1.1rem, 1.7vw, 1.5rem);
}

.brand p {
  margin: 0.25rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.file-pick {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.menu-wrap {
  position: relative;
  z-index: 1100;
}

.view-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 0.45rem);
  width: min(560px, calc(100vw - 2rem));
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 0.7rem;
  display: grid;
  gap: 0.7rem;
  z-index: 2000;
}

.view-menu[hidden] {
  display: none !important;
}

.menu-card {
  border: 1px solid var(--line);
  border-radius: 11px;
  padding: 0.7rem;
  display: grid;
  gap: 0.65rem;
  background: #fffcf8;
}

#pdfInput {
  display: none;
}

.layout {
  display: grid;
  grid-template-columns: minmax(320px, 410px) 1fr;
  gap: 1rem;
  padding: 1rem;
  height: calc(100vh - 84px);
}

.panel {
  display: grid;
  gap: 1rem;
  min-height: 0;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 0.95rem;
  box-shadow: var(--shadow);
}

.controls-card {
  display: grid;
  gap: 0.8rem;
}

.layers-card {
  display: grid;
  gap: 0.8rem;
  min-height: 0;
}

.card h2 {
  margin: 0;
  font-size: 1rem;
}

.row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.wrap {
  flex-wrap: wrap;
}

.button {
  border: 1px solid var(--primary);
  background: var(--primary);
  color: var(--primary-ink);
  border-radius: 10px;
  padding: 0.45rem 0.75rem;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600;
  cursor: pointer;
  transition: transform 120ms ease, box-shadow 120ms ease, opacity 120ms ease;
}

.button:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(31, 111, 120, 0.3);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.button.tiny {
  font-size: 0.82rem;
  padding: 0.36rem 0.58rem;
}

select {
  padding: 0.38rem 0.5rem;
  border-radius: 9px;
  border: 1px solid var(--line);
  font-family: "IBM Plex Mono", monospace;
  background: #fff;
  color: var(--ink);
}

select:disabled {
  background: #f0e5d7;
  color: var(--muted);
}

input[type="range"] {
  width: 100%;
}

input[type="text"] {
  width: 100%;
  padding: 0.52rem 0.62rem;
  border-radius: 9px;
  border: 1px solid var(--line);
  font-family: "IBM Plex Mono", monospace;
}

input[type="text"]:disabled {
  background: #f0e5d7;
}

.layers-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.layer-list {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fffcf8;
  min-height: 220px;
  overflow: auto;
  padding: 0.55rem;
  display: grid;
  gap: 0.25rem;
}

.layer-item {
  display: grid;
  grid-template-columns: auto auto 1fr;
  gap: 0.55rem;
  align-items: center;
  padding: 0.35rem 0.25rem;
  border-radius: 8px;
  border: 1px solid transparent;
  outline: none;
}

.layer-item:hover {
  background: #f6ebda;
}

.layer-item.selected {
  background: #dceff1;
  border-color: #8eb8bd;
}

.layer-item.focused {
  box-shadow: inset 0 0 0 1px #2f6369;
}

.layer-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.layer-item.hidden {
  opacity: 0.62;
}

.layer-color {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid rgba(46, 42, 36, 0.3);
  background: repeating-conic-gradient(#ece5da 0% 25%, #fff9f0 0% 50%) 50% / 6px 6px;
}

.viewer-shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: 1fr auto;
  min-height: 0;
}

.viewer-container {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 18px;
  background:
    linear-gradient(45deg, rgba(31, 111, 120, 0.07) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(31, 111, 120, 0.07) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(31, 111, 120, 0.07) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(31, 111, 120, 0.07) 75%);
  background-size: 28px 28px;
  background-position: 0 0, 0 14px, 14px -14px, -14px 0;
  overflow: auto;
  box-shadow: var(--shadow);
}

#pdfCanvas {
  display: none;
  margin: 0;
  transform-origin: top left;
}

.viewer-container.loaded #pdfCanvas {
  display: block;
}

.viewer-container.loaded .empty-state {
  display: none;
}

.empty-state {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  text-align: center;
  padding: 1rem;
  color: var(--muted);
}

.empty-state h2 {
  margin: 0;
}

.empty-state p {
  margin-top: 0.5rem;
  max-width: 28ch;
}

.status {
  margin-top: 0.6rem;
  color: var(--muted);
  font-size: 0.86rem;
}

.muted {
  color: var(--muted);
}

.small {
  font-size: 0.84rem;
}

.mono {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.85rem;
}

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
    height: calc(100vh - 112px);
    overflow: hidden;
  }

  .panel {
    grid-template-columns: 1fr;
    max-height: 48vh;
    overflow: auto;
  }

  .layer-list {
    min-height: 140px;
    max-height: 26vh;
  }

  .view-menu {
    right: auto;
    left: 0;
    width: min(560px, calc(100vw - 1.2rem));
  }
}