/* ============================================================
   RND Sales Calculator — Stylesheet
   Clean, dense layout optimised for desktop sales use.
   ============================================================ */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --color-bg: #f4f5f7;
  --color-card: #ffffff;
  --color-border: #dde1e7;
  --color-text: #1a1d23;
  --color-text-secondary: #5e6470;
  --color-primary: #1e4fa0;
  --color-primary-hover: #163d82;
  --color-results-bg: #f0f4fb;
  --color-results-text: var(--color-text);
  --color-results-mid: #002147;
  --color-results-border: #d0daea;
  --color-success: #1a8a4a;
  --color-error: #b91c1c;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
}

html, body {
  height: 100%;
  background: var(--color-bg);
  font-family: var(--font);
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.5;
}

/* ---- App shell ---- */
.app {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 20px 40px;
}

/* ---- Header ---- */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  margin-bottom: 20px;
  position: sticky;
  top: 0;
  background: var(--color-bg);
  z-index: 10;
}

.header h1 {
  font-size: 18px;
  font-weight: 700;
  color: #002147;
  letter-spacing: -0.3px;
}

.pd-deal-info {
  display: block;
  margin-top: 2px;
  font-size: 13px;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.record-id {
  display: none;
}

.save-status {
  display: block;
  margin-top: 2px;
  font-size: 11px;
  transition: opacity 0.3s;
}

.save-status.saving { color: var(--color-text-secondary); }
.save-status.saved  { color: var(--color-success); }
.save-status.error  { color: var(--color-error); }

.mode-pill {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.03em;
  white-space: nowrap;
}
.mode-pill--write { background: #22c55e; color: #fff; }
.mode-pill--read  { background: #3b82f6; color: #fff; }
.mode-pill--demo  { background: #9ca3af; color: #fff; }

.customer-name-input {
  margin-left: 16px;
  width: 200px;
  padding: 5px 10px;
  border: 1px solid var(--color-border);
  border-radius: 5px;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font);
  color: var(--color-text);
  background: #fff;
  vertical-align: middle;
}

/* ---- Toast ---- */
.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 10px 18px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
  z-index: 100;
}

.toast.show {
  opacity: 1;
  pointer-events: auto;
}

.toast.success { background: var(--color-success); }
.toast.error   { background: var(--color-error); }

/* ---- Main layout ---- */
.main {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  align-items: start;
}

.input-grid {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ---- Card ---- */
.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px 20px 16px;
}

.section-title {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: #002147;
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--color-border);
}

/* ---- Form fields ---- */
.field {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-bottom: 10px;
}

.field:last-child { margin-bottom: 0; }

.field-divider {
  border: none;
  border-top: 1px solid #e2e8f0;
  margin: 10px 0;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 10px;
}

.field-row .field {
  margin-bottom: 0;
}

.field-row-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.field-row-4 .field {
  margin-bottom: 0;
}

label {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

input[type="number"],
input[type="text"],
select {
  width: 100%;
  padding: 3px 8px;
  border: 1px solid var(--color-border);
  border-radius: 5px;
  font-size: 14px;
  font-family: var(--font);
  color: var(--color-text);
  background: #fff;
  transition: border-color 0.15s;
  appearance: none;
  -webkit-appearance: none;
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%235e6470'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  padding-right: 24px;
}

input:focus, select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30,79,160,0.1);
}

select:disabled {
  background-color: #f4f5f7;
  color: #adb2bc;
  cursor: not-allowed;
}

/* Read mode: selects disabled only because of write-lock look normal (white) */
body.read-mode select:disabled:not([data-dep-disabled]) {
  background-color: var(--color-card);
  color: var(--color-text);
  cursor: default;
  opacity: 1;
}

/* ---- Modernization table ---- */
.mod-header {
  display: grid;
  grid-template-columns: 1fr 72px 160px 84px;
  gap: 6px;
  margin-bottom: 4px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--color-border);
}

.mod-col-head {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-secondary);
}

.mod-row {
  display: grid;
  grid-template-columns: 1fr 72px 160px 84px;
  gap: 6px;
  align-items: center;
  padding: 3px 0;
  border-bottom: 1px solid #e2e6ec;
}

.mod-row:last-child {
  border-bottom: none;
}

.mod-label {
  font-size: 13px;
  color: var(--color-text);
  line-height: 1.3;
}

.mod-row select {
  font-size: 12px;
  padding: 2px 22px 2px 6px;
}

.mod-jahr {
  width: 100%;
  padding: 2px 6px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 13px;
  color: var(--color-text);
  background: var(--color-card);
  box-sizing: border-box;
}

.mod-jahr:disabled {
  background-color: #f4f5f7;
  color: #adb2bc;
  cursor: not-allowed;
}

.mod-jahr.invalid {
  border-color: #b91c1c;
  background-color: #fff5f5;
  outline-color: #b91c1c;
}

/* ---- Results section ---- */
.results {
  background: var(--color-results-bg);
  border: 1px solid var(--color-results-border);
  border-radius: var(--radius);
  padding: 20px 24px 24px;
  box-shadow: var(--shadow);
}

.results-inner {
  max-width: 100%;
}

.results-tax {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-results-border);
}

.results-tax label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.results-tax input {
  width: 70px;
  font-size: 13px;
}

.results-header {
  display: grid;
  grid-template-columns: 1fr 120px 160px 120px;
  gap: 8px;
  margin-bottom: 4px;
}

.col-spacer { /* fills the label column */ }

.col-head {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--color-text-secondary);
  text-align: right;
}

.col-mid {
  color: var(--color-results-mid);
}

.result-row {
  display: grid;
  grid-template-columns: 1fr 120px 160px 120px;
  gap: 8px;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-results-border);
}

.result-row:last-child {
  border-bottom: none;
}

.result-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
}

.result-val {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text-secondary);
  text-align: right;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.3px;
}

.result-mid {
  color: var(--color-results-mid);
}

/* ---- Objekt-Tabs ---- */

.objekte-card {
  padding-bottom: 24px;
}

.objekte-card-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 0;
  border-bottom: 1px solid var(--color-border);
}

.objekte-card-header .section-title {
  margin-bottom: 0;
  padding-bottom: 8px;
  border-bottom: none;
}

.objekt-tabs-bar {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  padding-bottom: 0;
}

.objekt-tab {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border: 1px solid var(--color-border);
  border-bottom: none;
  border-radius: 4px 4px 0 0;
  background: #f4f5f7;
  color: var(--color-text-secondary);
  font-size: 12px;
  font-weight: 500;
  font-family: var(--font);
  cursor: pointer;
  user-select: none;
  position: relative;
  bottom: -1px; /* sitzt auf der Border des Headers → "Browser-Tab-Optik" */
  transition: background 0.1s, color 0.1s;
}

.objekt-tab.active {
  background: #fff;
  color: var(--color-text);
  border-bottom-color: #fff;
  z-index: 1;
  font-weight: 600;
}

.objekt-tab:not(.active):hover {
  background: #ebedf0;
  color: var(--color-text);
}

.objekt-tab-rename-input {
  width: 80px;
  min-width: 40px;
  max-width: 140px;
  font-size: 12px;
  font-weight: 600;
  font-family: var(--font);
  color: var(--color-text);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-primary);
  padding: 0 1px;
  outline: none;
  line-height: 1.2;
}

.objekt-tab-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  padding: 0;
  transition: background 0.1s, color 0.1s;
}

.objekt-tab-close:hover {
  background: #fee2e2;
  color: var(--color-error);
}

.add-objekt-tab-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: transparent;
  color: var(--color-text-secondary);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  padding: 0;
  align-self: center;
  margin-bottom: 1px;
  transition: background 0.1s, color 0.1s, border-color 0.1s;
}

.add-objekt-tab-btn:hover {
  background: #f0f4fb;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.objekt-panel {
  display: block; /* JS setzt display:none für inaktive Panels */
}

.field-row-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 14px;
}

.field-row-2 .field { margin-bottom: 0; }

.field-row-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 14px;
}

.field-row-3 .field {
  margin-bottom: 0;
}

/* ---- Two-column layout (side-by-side) ---- */

@media (min-width: 1040px) {
  .main {
    grid-template-columns: minmax(0, 1fr) 420px;
    gap: 24px;
  }

  .results {
    position: sticky;
    top: 72px; /* below sticky header */
  }

  .results-tax {
    margin-bottom: 10px;
    padding-bottom: 8px;
  }

  /* 4-column layout: label (1fr, wraps) | MIN | MID | MAX */
  .results-header {
    grid-template-columns: 1fr 58px 68px 58px;
    gap: 6px;
    margin-bottom: 4px;
  }

  .col-spacer { display: block; } /* spacer aligns with label column */

  .result-row {
    grid-template-columns: 1fr 58px 68px 58px;
    grid-template-rows: auto;
    gap: 6px;
    padding: 8px 0;
  }

  .result-label {
    grid-column: auto;
    font-size: 13px;
    line-height: 1.35;
    margin-bottom: 0;
    align-self: center;
  }

  .result-val { font-size: 15px; }
}

body.read-mode .add-objekt-tab-btn,
body.read-mode .objekt-tab-close {
  display: none;
}

/* ---- Multi-Gebäudeteil ---- */

.gebaeudeteil-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.gebaeudeteil-block {
  background: #f7f8fa;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 12px 14px;
}

.gebaeudeteil-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.gebaeudeteil-title-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.gebaeudeteil-rnd-badge {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(30,79,160,0.08);
  border-radius: 10px;
  padding: 1px 7px;
  letter-spacing: 0.2px;
}

.gebaeudeteil-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-primary);
}

.gebaeudeteil-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.anteil-wrapper {
  display: flex;
  align-items: center;
  gap: 6px;
}

.anteil-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.4px;
  white-space: nowrap;
}

.anteil-flaeche-input {
  display: flex;
  align-items: center;
  gap: 4px;
}

.anteil-flaeche-input input {
  width: 72px;
  padding: 4px 8px;
  border: 1px solid var(--color-border);
  border-radius: 5px;
  font-size: 14px;
  font-family: var(--font);
  color: var(--color-text);
  background: #fff;
  text-align: right;
}

.unit-suffix {
  font-size: 12px;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.gebaeudeteil-anteil {
  width: 60px;
  padding: 4px 8px;
  border: 1px solid var(--color-border);
  border-radius: 5px;
  font-size: 14px;
  font-family: var(--font);
  color: var(--color-text);
  background: #fff;
  text-align: right;
}

.gebaeudeteil-anteil.invalid {
  border-color: var(--color-error);
  background: #fff5f5;
}

.gebaeudeteil-anteil:disabled {
  background: #f4f5f7;
  color: #8a909c;
  cursor: not-allowed;
  border-color: var(--color-border);
}

/* ---- Custom confirm dialog ---- */
.confirm-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  z-index: 500;
  align-items: center;
  justify-content: center;
}

.confirm-overlay.active {
  display: flex;
}

.confirm-box {
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
  padding: 28px 28px 22px;
  max-width: 380px;
  width: calc(100% - 40px);
}

.confirm-message {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 22px;
  line-height: 1.5;
}

.confirm-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.confirm-btn {
  padding: 8px 20px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: background 0.1s;
}

.confirm-btn--cancel {
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-text);
}

.confirm-btn--cancel:hover { background: #f4f5f7; }

.confirm-btn--delete {
  border: none;
  background: var(--color-error);
  color: #fff;
}

.confirm-btn--delete:hover { background: #991b1b; }

.gebaeudeteil-remove-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: #fff;
  color: var(--color-text-secondary);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  padding: 0;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.gebaeudeteil-remove-btn:hover {
  background: #fee2e2;
  border-color: var(--color-error);
  color: var(--color-error);
}

.add-gebaeudeteil-btn {
  margin-top: 18px;
  padding: 8px 14px;
  border: 1px dashed var(--color-border);
  border-radius: 6px;
  background: transparent;
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  display: block;
  width: 100%;
  text-align: center;
}

.add-gebaeudeteil-btn:hover {
  background: #f0f4fb;
  border-color: var(--color-primary);
}

body.read-mode .add-gebaeudeteil-btn,
body.read-mode .gebaeudeteil-remove-btn {
  display: none;
}

.anteil-error {
  margin-top: 10px;
  font-size: 12px;
  color: var(--color-error);
  font-weight: 500;
}

/* ---- Responsive ---- */

/* Medium: mod-row and result columns shrink slightly */
@media (max-width: 1039px) and (min-width: 561px) {
  .mod-header,
  .mod-header,
  .mod-row {
    grid-template-columns: 1fr 65px 140px 75px;
    gap: 6px;
  }

  .results-header,
  .result-row {
    grid-template-columns: 1fr 80px 100px 80px;
  }

  .result-val { font-size: 15px; }
}

/* Small: collapse multi-column layouts */
@media (max-width: 560px) {
  .field-row,
  .field-row-2,
  .field-row-3,
  .field-row-4 {
    grid-template-columns: 1fr;
  }

  .mod-header,
  .mod-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .mod-header { display: none; }

  .results-header { display: none; }

  .result-row {
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
  }

  .result-label {
    grid-column: 1 / -1;
    font-size: 13px;
  }

  .result-val { font-size: 15px; }
}