:root {
  --bg-0: #f4efe2;
  --bg-1: #ded6c4;
  --ink: #14213f;
  --muted-ink: #4b5676;
  --panel: rgba(255, 255, 255, 0.9);
  --panel-edge: rgba(20, 33, 63, 0.13);
  --accent: #00a99b;
  --accent-dark: #006d67;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 20% 10%, #ffffff, transparent 40%),
    radial-gradient(circle at 85% 80%, #cfe9df, transparent 35%),
    linear-gradient(140deg, var(--bg-0), var(--bg-1));
}

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

.controls-panel {
  border-right: 1px solid var(--panel-edge);
  background: var(--panel);
  padding: 0.85rem 0.95rem;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.panel-header {
  margin-bottom: 0.45rem;
}

.panel-kicker {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--accent-dark);
  margin: 0 0 0.3rem;
}

.panel-header h1 {
  font-family: "Fraunces", serif;
  font-size: 1.7rem;
  line-height: 1.05;
  margin: 0;
}

.panel-header p {
  margin: 0.3rem 0 0;
  font-size: 0.86rem;
  color: var(--muted-ink);
}

.controls {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.section-tabs {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.32rem;
}

.section-tab {
  border: 1px solid var(--panel-edge);
  border-radius: 0.5rem;
  background: #f6f8ff;
  color: #1f3461;
  font-size: 0.68rem;
  padding: 0.36rem 0.25rem;
}

.section-tab.active {
  background: #1f3461;
  color: #ffffff;
}

.field-group {
  display: none;
  border: 1px solid var(--panel-edge);
  border-radius: 0.8rem;
  padding: 0.7rem;
  background: rgba(255, 255, 255, 0.64);
}

.field-group.active {
  display: block;
}

.field-group h2 {
  margin: 0 0 0.45rem;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-dark);
}

label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  margin: 0.4rem 0 0.22rem;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

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

textarea,
input[type="text"],
input[type="number"],
select {
  width: 100%;
  border: 1px solid #b6bfd3;
  border-radius: 0.64rem;
  padding: 0.45rem 0.58rem;
  font-size: 0.85rem;
  color: var(--ink);
  background: #ffffff;
}

textarea {
  resize: vertical;
  min-height: 3.6rem;
}

input[type="color"] {
  width: 100%;
  height: 2.05rem;
  border: 1px solid #b6bfd3;
  border-radius: 0.64rem;
  padding: 0.14rem;
  background: #ffffff;
}

input[type="file"] {
  width: 100%;
  font-size: 0.76rem;
}

.inline-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.45rem;
}

.button-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.45rem;
}

button {
  border: none;
  border-radius: 0.72rem;
  padding: 0.54rem 0.6rem;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  color: #ffffff;
  background: #1f3461;
}

button.ghost {
  color: #1f3461;
  background: #e5ebfb;
}

button.accent {
  background: var(--accent);
}

button:disabled {
  cursor: wait;
  opacity: 0.72;
}

.status {
  min-height: 1rem;
  margin: 0.08rem 0 0;
  font-size: 0.78rem;
  color: var(--muted-ink);
}

.preview-panel {
  display: grid;
  grid-template-rows: auto 1fr;
  min-width: 0;
  min-height: 0;
}

.preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.8rem;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid rgba(20, 33, 63, 0.12);
}

.preview-header h2 {
  font-family: "Fraunces", serif;
  margin: 0;
  font-size: 1.2rem;
}

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

#previewSizeLabel {
  font-size: 0.86rem;
  color: var(--muted-ink);
}

.preview-stage {
  position: relative;
  padding: 0.85rem;
  overflow: auto;
  cursor: grab;
  touch-action: pan-x pan-y;
  min-width: 0;
  min-height: 0;
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
}

.preview-stage.center-x {
  justify-content: center;
}

.preview-stage.center-y {
  align-items: center;
}

.preview-viewport {
  position: relative;
  flex: 0 0 auto;
}

.preview-stage.is-panning {
  cursor: grabbing;
}

.preview-tool-btn {
  border: none;
  border-radius: 0.55rem;
  padding: 0.3rem 0.56rem;
  font-size: 0.72rem;
  font-weight: 700;
  color: #1f3461;
  background: #e5ebfb;
}

.preview-zoom-label {
  margin: 0;
  font-size: 0.76rem;
  color: var(--muted-ink);
}

#previewZoom {
  width: 100px;
}

#previewZoomLabel {
  min-width: 2.65rem;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--ink);
}

#templateFrame {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 1200px;
  height: 630px;
  border: none;
  background: #ffffff;
  border-radius: 0.7rem;
  transform-origin: top left;
  pointer-events: none;
}

@media (max-height: 820px) and (min-width: 1141px) {
  .controls-panel {
    padding: 0.7rem 0.8rem;
  }

  .panel-header {
    margin-bottom: 0.34rem;
  }

  .panel-header h1 {
    font-size: 1.56rem;
  }

  .panel-header p {
    font-size: 0.8rem;
  }

  .field-group {
    padding: 0.58rem;
  }

  .field-group h2 {
    margin-bottom: 0.34rem;
  }

  label {
    margin: 0.34rem 0 0.18rem;
  }

  textarea {
    min-height: 3rem;
  }

  input[type="color"] {
    height: 1.85rem;
  }

  button {
    padding: 0.45rem 0.5rem;
  }
}

@media (max-width: 1140px) {
  html,
  body {
    height: auto;
    overflow: auto;
  }

  .app-shell {
    height: auto;
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
  }

  .controls-panel {
    overflow: auto;
    border-right: none;
    border-bottom: 1px solid var(--panel-edge);
    max-height: 48vh;
    padding: 1rem;
  }

  .section-tabs {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.4rem;
  }

  .preview-tools {
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  #previewZoom {
    width: 90px;
  }

  #templateFrame {
    border-radius: 0.6rem;
  }
}