:root {
  --panel: #232830;
  --panel-soft: #2b313b;
  --panel-stroke: rgba(255, 255, 255, 0.08);
  --text: #f5f7fb;
  --muted: rgba(245, 247, 251, 0.72);
  --accent: #1f8fff;
  --shadow: 0 20px 56px rgba(0, 0, 0, 0.28);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 18px;
  --card-width: 460px;
  --card-action-min-width: 58px;
  --card-action-padding-y: 7px;
  --card-action-padding-x: 12px;
  --card-action-font-size: 13px;
  --card-action-radius: 14px;
  --card-kicker-font-size: 12px;
  --card-kicker-spacing: 0.08em;
  --card-title-font-size: 24px;
  --card-title-line-height: 1.15;
  --card-head-gap: 12px;
  --card-head-margin-bottom: 14px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "SF Pro Display", "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(77, 104, 143, 0.12), transparent 24%),
    linear-gradient(180deg, #20242c 0%, #232830 100%);
}

.app-toast {
  position: fixed;
  top: 22px;
  right: 22px;
  z-index: 9999;
  min-width: 260px;
  max-width: min(420px, calc(100vw - 32px));
  padding: 14px 18px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  background: rgba(24, 28, 35, 0.92);
  color: var(--text);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.28);
  line-height: 1.5;
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease, border-color 160ms ease;
}

.app-toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.app-toast[data-tone="success"] {
  border-color: rgba(68, 208, 138, 0.42);
}

.app-toast[data-tone="warning"] {
  border-color: rgba(255, 183, 77, 0.44);
}

.app-toast[data-tone="error"] {
  border-color: rgba(255, 110, 110, 0.48);
}

button,
input,
label {
  font: inherit;
}

.shell {
  min-height: 100vh;
}

.eyebrow,
.card-kicker {
  margin: 0 0 10px;
  color: #c8d8ff;
  font-size: var(--card-kicker-font-size);
  font-weight: 700;
  letter-spacing: var(--card-kicker-spacing);
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  letter-spacing: -0.03em;
}

.hint,
.toolbar-status {
  color: var(--muted);
  line-height: 1.6;
}

.workspace {
  padding: 24px 28px 28px;
}

.toolbar,
.mockup-card,
.dialog-shell {
  border: 1px solid var(--panel-stroke);
  border-radius: var(--radius-xl);
  background: var(--panel);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.18);
}

.toolbar {
  padding: 18px;
  margin-bottom: 22px;
}

.toolbar-row,
.toolbar-main,
.toolbar-layout {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.toolbar-row {
  justify-content: space-between;
}

.page-title {
  margin: 0 8px 0 0;
  font-size: 24px;
  line-height: 1;
  letter-spacing: -0.03em;
  white-space: nowrap;
}

.upload-button,
.secondary-button,
button,
input[type="text"],
input[type="file"] {
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-md);
  background: var(--panel-soft);
  color: var(--text);
  padding: 12px 18px;
  transition: transform 120ms ease, box-shadow 120ms ease, border-color 120ms ease, background 120ms ease;
}

.upload-button,
.secondary-button,
button {
  cursor: pointer;
}

.upload-button,
.secondary-button {
  min-width: 128px;
  text-align: center;
  font-weight: 700;
}

button:hover,
.upload-button:hover,
.secondary-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.14);
  border-color: rgba(120, 174, 255, 0.42);
}

.icon-button {
  width: 40px;
  min-width: 40px;
  padding: 6px 0;
  font-size: 22px;
  line-height: 1;
}

.subtle-button {
  color: #ffb4b4;
}

.toolbar-status {
  min-width: 150px;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.eagle-scale {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
}

.eagle-scale input {
  width: 105px;
}

.eagle-scale output {
  min-width: 42px;
  text-align: right;
  color: var(--text);
  font-weight: 650;
  font-size: 13px;
}

.mockup-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  align-items: flex-start;
}

.mockup-card {
  width: min(100%, var(--card-width));
  flex: 0 0 min(100%, var(--card-width));
  padding: 16px;
}

.card-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--card-head-gap);
  align-items: start;
  margin-bottom: var(--card-head-margin-bottom);
}

.card-title-wrap {
  min-width: 0;
  flex: 1 1 auto;
  display: grid;
  gap: 2px;
}

.card-title {
  font-size: var(--card-title-font-size);
  line-height: var(--card-title-line-height);
  word-break: break-word;
}

.card-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
  flex: 0 0 auto;
  align-self: start;
}

.card-actions button {
  min-width: var(--card-action-min-width);
  padding: var(--card-action-padding-y) var(--card-action-padding-x);
  font-size: var(--card-action-font-size);
  border-radius: var(--card-action-radius);
}

.canvas-wrap,
.dialog-canvas-wrap {
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02));
}

.canvas-wrap {
  overflow: hidden;
}

.dialog-canvas-wrap {
  overflow: auto;
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

.preview-canvas,
#calibrationCanvas {
  display: block;
  height: auto;
}

.preview-canvas {
  width: 100%;
}

#calibrationCanvas {
  width: auto;
  max-width: 100%;
  max-height: 72vh;
}

.calibration-dialog,
.create-dialog {
  width: min(1080px, calc(100vw - 32px));
  max-width: 1080px;
  padding: 0;
  border: 0;
  background: transparent;
}

.calibration-dialog::backdrop,
.create-dialog::backdrop {
  background: rgba(0, 0, 0, 0.44);
  backdrop-filter: blur(6px);
}

.dialog-shell {
  padding: 20px;
}

.dialog-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: start;
  margin-bottom: 18px;
}

.ghost-button {
  min-width: 84px;
}

.dialog-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 18px;
  align-items: start;
}

.dialog-controls {
  padding: 2px 0;
}

.create-shell {
  max-width: 640px;
  margin: 0 auto;
}

.create-fields {
  display: grid;
  gap: 16px;
}

.field {
  display: grid;
  gap: 8px;
}

.actions {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}

.actions.stacked {
  flex-direction: column;
}

@media (max-width: 980px) {
  .toolbar-row,
  .toolbar-main,
  .toolbar-layout,
  .card-actions,
  .dialog-body,
  .actions {
    flex-direction: column;
    align-items: stretch;
  }

  .workspace,
  .workspace {
    padding: 24px;
  }

  .eagle-scale {
    justify-content: space-between;
  }

  .eagle-scale input {
    width: 100%;
  }
}