:root {
  color-scheme: dark;
  --bg: #101214;
  --surface: #181d21;
  --surface-2: #20272d;
  --line: #34414a;
  --text: #eef3f4;
  --muted: #9dacb4;
  --accent: #68d8a3;
  --accent-2: #f6c85f;
  --danger: #ff716b;
  --shadow: rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 14% 10%, rgba(104, 216, 163, 0.12), transparent 28%),
    linear-gradient(135deg, #101214 0%, #151b1f 48%, #111514 100%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
select {
  font: inherit;
}

button {
  border: 1px solid rgba(104, 216, 163, 0.45);
  border-radius: 8px;
  background: rgba(104, 216, 163, 0.12);
  color: var(--text);
  min-height: 40px;
  padding: 0 14px;
  cursor: pointer;
}

button:hover {
  background: rgba(104, 216, 163, 0.22);
}

button.danger {
  border-color: rgba(255, 113, 107, 0.48);
  background: rgba(255, 113, 107, 0.12);
}

input,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #0d1012;
  color: var(--text);
  min-height: 38px;
  padding: 8px 10px;
}

.app-header {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-end;
  padding: 32px clamp(18px, 4vw, 48px) 20px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 8px;
  font-size: clamp(2.2rem, 7vw, 5rem);
  line-height: 0.95;
}

h2 {
  margin-bottom: 10px;
  font-size: 1.05rem;
}

.intro {
  max-width: 680px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.55;
}

.header-actions {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto;
  gap: 10px;
  min-width: min(100%, 380px);
}

.app-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 430px);
  gap: 18px;
  padding: 0 clamp(18px, 4vw, 48px) 36px;
}

.workspace,
.panel {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  background: rgba(24, 29, 33, 0.9);
  box-shadow: 0 18px 48px var(--shadow);
}

.workspace {
  overflow: hidden;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 18px;
  border-bottom: 1px solid var(--line);
}

.toolbar p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.45;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
  align-content: flex-start;
}

.layout-wrap {
  padding: 18px;
  overflow: auto;
}

.site-grid {
  position: relative;
  min-width: 760px;
  height: 560px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background-color: #11171a;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.065) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.065) 1px, transparent 1px);
  background-size: 24px 24px;
}

.container-module {
  position: absolute;
  display: grid;
  place-items: center;
  height: 48px;
  border: 2px solid rgba(104, 216, 163, 0.75);
  border-radius: 5px;
  background: linear-gradient(135deg, rgba(104, 216, 163, 0.32), rgba(246, 200, 95, 0.18));
  color: var(--text);
  font-weight: 800;
  user-select: none;
  cursor: grab;
}

.container-module[data-size="40"] {
  width: 192px;
}

.container-module[data-size="20"] {
  width: 96px;
}

.container-module[data-rotation="90"] {
  transform-origin: top left;
  transform: rotate(90deg) translateY(-100%);
}

.container-module.selected {
  border-color: var(--accent-2);
  box-shadow: 0 0 0 3px rgba(246, 200, 95, 0.18);
}

.selected-panel {
  display: grid;
  grid-template-columns: 1.2fr 1fr 80px repeat(3, minmax(120px, auto));
  gap: 12px;
  align-items: center;
  padding: 14px 18px 18px;
  border-top: 1px solid var(--line);
}

.label,
label {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

label input,
label select {
  margin-top: 6px;
}

.check {
  display: flex;
  gap: 8px;
  align-items: center;
  color: var(--text);
  letter-spacing: 0;
  text-transform: none;
}

.check input {
  width: 18px;
  min-height: 18px;
  margin: 0;
}

.sidebar {
  display: grid;
  gap: 18px;
  align-content: start;
}

.panel {
  padding: 18px;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.line-item,
.comparison-row,
.saved-project {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--muted);
}

.line-item strong,
.comparison-row strong,
.saved-project strong {
  color: var(--text);
  white-space: nowrap;
}

.grand-total {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 14px;
  padding: 16px;
  border-radius: 8px;
  background: rgba(104, 216, 163, 0.12);
}

.grand-total strong {
  color: var(--accent);
  font-size: 1.6rem;
}

.status {
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

code {
  color: var(--accent-2);
}

.saved-list {
  display: grid;
  gap: 8px;
}

.saved-project {
  align-items: center;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  padding: 10px;
  background: rgba(255, 255, 255, 0.03);
}

@media (max-width: 1120px) {
  .app-shell,
  .app-header {
    grid-template-columns: 1fr;
  }

  .app-header,
  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .button-row {
    justify-content: flex-start;
  }

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

@media (max-width: 680px) {
  .header-actions,
  .field-grid,
  .selected-panel {
    grid-template-columns: 1fr;
  }

  .site-grid {
    min-width: 620px;
    height: 460px;
  }
}