:root {
  --bg: #0f1117;
  --surface: #171b26;
  --surface2: #1e2435;
  --border: #2a3045;
  --accent:  #4f9cf9;
  --accent2: #f97b4f;
  --success: #4fc98a;
  --warn: #f9c44f;
  --danger: #f94f4f;
  --text: #e8eaf0;
  --text2: #8892aa;
  --text3: #525d78;
  --mono: 'Space Mono', monospace;
  --sans: 'DM Sans', sans-serif;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr;
}
/* Stellt sicher, dass das Label trotz Tooltip-Container sauber aussieht */
.input-group label {
  display: block;
  margin-bottom: 5px;
}

/* Container für den Tooltip */
.tooltip {
  position: relative;
  display: inline-block;
  cursor: help;
  display: inline-block; /* Verhindert, dass der Tooltip die ganze Breite einnimmt */
  border-bottom: 1px dotted #4f9cf9; /* Signalisiert dem User: Hier gibt's Infos */
}

/* Der eigentliche Erklärungstext (versteckt) */
.tooltip .tooltiptext {
  visibility: hidden;
  width: auto;
  background-color: var(--surface);
  color: var(--accent);
  text-align: center;
  border-radius: 6px;
  padding: 8px;
  position: absolute;
  z-index: 10;
  bottom: -50px; /* Erscheint über dem Text */
  left: 50%;
  transform: translateX(-50%);
  opacity: 0;
  transition: opacity 0.3s;
  font-size: 0.85rem;
  font-weight: normal;
  line-height: 1.2;
  pointer-events: none; /* Verhindert Flackern */
}

/* Anzeigen bei Hover (Desktop) und Focus (Mobil) */
.tooltip:hover .tooltiptext, 
.tooltip:focus .tooltiptext {
  visibility: visible;
  opacity: 1;
}

/* Kleiner Pfeil nach unten */
.tooltip .tooltiptext::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: #333 transparent transparent transparent;
}

/* ── HEADER ─────────────────────────────────────────────── */
header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  height: 58px;
  position: sticky;
  top: 0;
  z-index: 100;
  overflow-x: auto;          /* prevent blowout on very small screens */
  scrollbar-width: none;
}
header::-webkit-scrollbar { display: none; }
.img_logo { 
  background-image: url('3d-logo-argla.png-2-121x114.png-96x90.png');
  max-width: 50px;
  height: 44px;
  background-repeat: no-repeat; /* Verhindert Wiederholung */
  background-size: 90%; /* Bild füllt den Bereich aus */
  border-radius: 10px;  
  margin-right: 100px;
  margin-left: 8px;
  opacity: 0.8;
  border: rgb(27,8,236) 5px double;
  background-clip: border-box;
  filter: drop-shadow(rgb(8,54,237) 0px 0px 25px);
  width: 65px;
  height: 60px;
  display: inline flow-root;
  
}
header h1 {
  font-family: var(--mono);
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  color: var(--accent);
}
header h2 {
  font-family: var(--mono);
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  font-variant: small-caps;
  color: var(--accent);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  /* NO fixed width – flexbox handles it */
}
header h3 {
  font-family: var(--mono);
  font-size: 1.5rem;
  letter-spacing: 0.15em;
  color: var(--accent);
  max-width: 100px;
}
header .tag {
  font-size: 0.7rem;
  background: var(--accent);
  color: #000;
  padding: 2px 8px;
  border-radius: 3px;
  font-weight: 700;
  letter-spacing: 0.06em;
  font-family: var(--mono);
  white-space: nowrap;      /* Verhindert den Zeilenumbruch */
  overflow: hidden;         /* Versteckt den überstehenden Text */
  text-overflow: ellipsis;  /* Zeigt "..." am Ende */
  width: 95x;             /* Begrenzung ist notwendig */
  }
footer {
  font-size: 0.7rem;
  background: var(--accent);
  color: #000;
  padding: 2px 8px;
  border-radius: 3px;
  font-weight: 700;
  letter-spacing: 0.06em;
  font-family: var(--mono);
}
/* Override inline logo margin */
header > a[href] {
  margin-right: 0 !important;
  flex-shrink: 0;
}
header nav {
  margin-left: auto;
  display: flex;
  gap: 0.25rem;
}
header nav button {
  background: none;
  border: 1px solid transparent;
  color: var(--text2);
  font-family: var(--sans);
  font-size: 0.82rem;
  padding: 5px 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s;
}
header nav button:hover { color: var(--text); background: var(--surface2); }
header nav button.active { color: var(--accent); border-color: var(--accent); background: rgba(79,156,249,0.08); }

/* ── LAYOUT ─────────────────────────────────────────────── */
.app {
  display: grid;
  grid-template-columns: 340px 1fr;
  height: calc(100vh - 58px);
  overflow: hidden;
}

/* ── SIDEBAR ─────────────────────────────────────────────── */
.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.section {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
}
.section-title {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--text3);
  text-transform: uppercase;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* Climate grid */
.climate-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
.input-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.input-group label {
  font-size: 0.72rem;
  color: var(--text2);
  font-family: var(--mono);
  letter-spacing: 0.04em;
}
.input-group input, .input-group select {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.85rem;
  padding: 7px 10px;
  width: 100%;
  transition: border-color 0.15s;
  outline: none;
}
.input-group input:focus, .input-group select:focus { border-color: var(--accent); }
.input-group select option { background: var(--surface2); }

/* Orientation toggle */
.orient-toggle {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}
.orient-btn {
  flex: 1;
  padding: 7px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text2);
  font-family: var(--sans);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.orient-btn.active {
  background: rgba(79,156,249,0.12);
  border-color: var(--accent);
  color: var(--accent);
}

/* Layers */
.layers-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.layer-row {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem;
  position: relative;
  transition: border-color 0.15s;
}
.layer-row:hover { border-color: var(--accent); }
.layer-row .layer-num {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--text3);
  position: absolute;
  top: 8px;
  right: 10px;
}
.layer-select-row {
  display: flex;
  gap: 6px;
  margin-bottom: 6px;
}
.layer-select-row select {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--text);
  font-family: var(--sans);
  font-size: 0.78rem;
  padding: 5px 8px;
  outline: none;
  cursor: pointer;
  transition: border-color 0.15s;
}
.layer-select-row select:focus { border-color: var(--accent); }
.layer-select-row select option { background: #1a1f2e; }
.del-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--text3);
  cursor: pointer;
  width: 28px;
  font-size: 1rem;
  transition: all 0.15s;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.del-btn:hover { border-color: var(--danger); color: var(--danger); }
.layer-params {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 5px;
}
.layer-param {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.layer-param label {
  font-size: 0.62rem;
  color: var(--text3);
  font-family: var(--mono);
}
.layer-param input {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.78rem;
  padding: 4px 6px;
  outline: none;
  width: 100%;
  transition: border-color 0.15s;
}
.layer-param input:focus { border-color: var(--accent); }
.layer-param input.auto { color: var(--success); border-color: rgba(79,201,138,0.3); }
.layer-cat {
  font-size: 0.65rem;
  color: var(--text3);
  font-style: italic;
  margin-top: 3px;
}

.add-layer-btn {
  margin-top: 0.5rem;
  width: 100%;
  padding: 8px;
  border-radius: 6px;
  border: 1px dashed var(--border);
  background: none;
  color: var(--text3);
  font-family: var(--sans);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.15s;
}
.add-layer-btn:hover { border-color: var(--accent); color: var(--accent); }

/* Results box */
.results-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
.result-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem;
  text-align: center;
}
.result-card .val {
  font-family: var(--mono);
  font-size: 1.1rem;
  color: var(--accent);
  font-weight: 700;
}
.result-card .val.danger { color: var(--danger); }
.result-card .val.success { color: var(--success); }
.result-card .lbl {
  font-size: 0.67rem;
  color: var(--text3);
  margin-top: 3px;
  font-family: var(--mono);
  letter-spacing: 0.04em;
}
.condensation-warn {
  background: rgba(249,79,79,0.1);
  border: 1px solid var(--danger);
  border-radius: 8px;
  padding: 0.75rem;
  font-size: 0.78rem;
  color: var(--danger);
  margin-top: 0.75rem;
  display: none;
}
.condensation-warn.show { display: block; }

/* ── MAIN CONTENT ────────────────────────────────────────── */
.main {
  overflow-y: auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.main::-webkit-scrollbar { width: 4px; }
.main::-webkit-scrollbar-thumb { background: var(--border); }

/* Tabs */
.tab-bar {
  display: flex;
  gap: 0.25rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0;
  margin-bottom: -1px;
}
.tab-btn {
  background: none;
  border: 1px solid transparent;
  border-bottom: none;
  color: var(--text3);
  font-family: var(--sans);
  font-size: 0.82rem;
  padding: 8px 18px;
  cursor: pointer;
  border-radius: 6px 6px 0 0;
  transition: all 0.15s;
  position: relative;
  bottom: -1px;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--accent); border-color: var(--border); background: var(--surface); border-bottom-color: var(--surface); }

.tab-content { display: none; }
.tab-content.active { display: block; }

/* Charts */
.chart-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
}
.chart-panel h3 {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--text3);
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.chart-wrap {
  position: relative;
  height: 280px;
}

/* Wall schematic */
.wall-schematic {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
}
.wall-schematic h3 {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--text3);
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}
.schematic-container {
  position: relative;
}
.schematic-h {
  display: flex;
  align-items: stretch;
  gap: 0;
  min-height: 120px;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}
.schematic-v {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.layer-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0.5rem;
  position: relative;
  transition: all 0.3s;
  cursor: default;
  min-width: 60px;
}
.layer-block-v {
  display: flex;
  flex-direction: row;
  align-items: center;
  padding: 0.5rem 1rem;
  min-height: 50px;
  position: relative;
}
.layer-block .layer-name, .layer-block-v .layer-name {
  font-size: 0.65rem;
  font-weight: 600;
  color: rgba(0,0,0,0.7);
  text-align: center;
  writing-mode: horizontal-tb;
  line-height: 1.3;
  max-width: 90%;
  word-break: break-word;
}
.layer-block-v .layer-name { writing-mode: horizontal-tb; max-width: 200px; text-align: left; }
.layer-block .layer-d, .layer-block-v .layer-d {
  font-size: 0.6rem;
  color: rgba(0,0,0,0.5);
  font-family: monospace;
  margin-top: 3px;
}
.layer-block-v .layer-d { margin-top: 0; margin-left: auto; font-family: monospace; }

.schematic-label {
  font-size: 0.7rem;
  font-family: var(--mono);
  color: var(--text3);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0;
}
.schematic-label.inside { color: var(--accent2); }
.schematic-label.outside { color: var(--accent); }
.schematic-labels-h {
  display: flex;
  justify-content: space-between;
  margin-top: 0.5rem;
}
.schematic-labels-v {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  position: absolute;
  left: -90px;
  top: 0;
  bottom: 0;
  justify-content: space-between;
}

/* Data table */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.78rem;
}
.data-table th {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text3);
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  background: var(--surface);
  position: sticky;
  top: 0;
}
.data-table td {
  padding: 7px 10px;
  border-bottom: 1px solid rgba(42,48,69,0.5);
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text2);
}
.data-table tr:hover td { background: var(--surface2); }
.data-table td.condensation { color: var(--danger); font-weight: 700; }
.data-table td.ok { color: var(--success); }
.data-table td.highlight { color: var(--text); }

/* Material library */
.mat-lib {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}
.mat-lib-header {
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  border-bottom: 1px solid var(--border);
}
.mat-lib-header h3 {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--text3);
  text-transform: uppercase;
}
.mat-search {
  flex: 1;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: var(--sans);
  font-size: 0.82rem;
  padding: 6px 12px;
  outline: none;
  transition: border-color 0.15s;
}
.mat-search:focus { border-color: var(--accent); }
.mat-add-btn {
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: 6px;
  padding: 6px 14px;
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s;
  white-space: nowrap;
}
.mat-add-btn:hover { opacity: 0.85; }

.cat-filter {
  display: flex;
  gap: 0.4rem;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.cat-pill {
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: none;
  color: var(--text3);
  font-size: 0.7rem;
  cursor: pointer;
  transition: all 0.15s;
  font-family: var(--sans);
}
.cat-pill:hover { color: var(--text); border-color: var(--text3); }
.cat-pill.active { background: rgba(79,156,249,0.12); border-color: var(--accent); color: var(--accent); }

.mat-table-wrap { overflow-x: auto; max-height: 420px; overflow-y: auto; }
.mat-table-wrap::-webkit-scrollbar { width: 4px; height: 4px; }
.mat-table-wrap::-webkit-scrollbar-thumb { background: var(--border); }

.mat-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.78rem;
}
.mat-table th {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text3);
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  background: var(--surface);
  position: sticky;
  top: 0;
  white-space: nowrap;
}
.mat-table td {
  padding: 7px 12px;
  border-bottom: 1px solid rgba(42,48,69,0.5);
  color: var(--text2);
  font-family: var(--mono);
  white-space: nowrap;
}
.mat-table tr:hover td { background: var(--surface2); }
.mat-table td.mat-name { color: var(--text); font-family: var(--sans); font-size: 0.8rem; }
.mat-table td.cat-cell { font-family: var(--sans); font-size: 0.72rem; }
.mat-table .use-btn {
  background: rgba(79,156,249,0.1);
  border: 1px solid rgba(79,156,249,0.3);
  border-radius: 4px;
  color: var(--accent);
  font-size: 0.7rem;
  padding: 3px 8px;
  cursor: pointer;
  transition: all 0.15s;
  font-family: var(--sans);
}
.mat-table .use-btn:hover { background: rgba(79,156,249,0.2); }
.mat-table .del-mat-btn {
  background: none;
  border: 1px solid transparent;
  border-radius: 4px;
  color: var(--text3);
  font-size: 0.75rem;
  padding: 3px 6px;
  cursor: pointer;
  transition: all 0.15s;
}
.mat-table .del-mat-btn:hover { border-color: var(--danger); color: var(--danger); }
.mat-table .edit-btn {
  background: none;
  border: 1px solid transparent;
  border-radius: 4px;
  color: var(--text3);
  font-size: 0.75rem;
  padding: 3px 6px;
  cursor: pointer;
  transition: all 0.15s;
}
.mat-table .edit-btn:hover { border-color: var(--warn); color: var(--warn); }

.cat-dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  margin-right: 5px;
  vertical-align: middle;
}

/* Add material form */
.add-mat-form {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border);
  display: none;
  animation: slideDown 0.2s ease;
}
.add-mat-form.show { display: block; }
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}
.add-mat-form h4 {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--text3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.form-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1.5fr;
  gap: 0.5rem;
  align-items: end;
  flex-wrap: wrap;
}
.form-row .fi { display: flex; flex-direction: column; gap: 3px; }
.form-row label { font-size: 0.65rem; color: var(--text3); font-family: var(--mono); }
.form-row input, .form-row select {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.8rem;
  padding: 6px 8px;
  outline: none;
  transition: border-color 0.15s;
  width: 100%;
}
.form-row input:focus, .form-row select:focus { border-color: var(--accent); }
.form-actions { display: flex; gap: 0.5rem; margin-top: 0.75rem; }
.btn-primary {
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: 6px;
  padding: 7px 16px;
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s;
}
.btn-primary:hover { opacity: 0.85; }
.btn-ghost {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 7px 14px;
  color: var(--text2);
  font-family: var(--sans);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.15s;
}
.btn-ghost:hover { border-color: var(--text2); color: var(--text); }

/* category colors */
.c-putz     { background: #c4a200; }
.c-mauerwerk{ background: #4f9cf9; }
.c-beton    { background: #7a8faa; }
.c-daemmung { background: #4fc98a; }
.c-holz     { background: #d47f4a; }
.c-trockenbau{background: #9a9aaa; }
.c-boden    { background: #a07cc0; }
.c-folie    { background: #e05a5a; }
.c-fassade  { background: #5aaa7a; }
.c-sonstige { background: #666; }

/* Layer color palette (hue cycle) */
.lc-0 { background: rgba(79,156,249,0.18); border-left: 3px solid #4f9cf9; }
.lc-1 { background: rgba(249,123,79,0.18); border-left: 3px solid #f97b4f; }
.lc-2 { background: rgba(79,201,138,0.18); border-left: 3px solid #4fc98a; }
.lc-3 { background: rgba(249,196,79,0.18); border-left: 3px solid #f9c44f; }
.lc-4 { background: rgba(190,79,249,0.18); border-left: 3px solid #be4ff9; }
.lc-5 { background: rgba(79,220,249,0.18); border-left: 3px solid #4fdcf9; }
.lc-6 { background: rgba(249,79,149,0.18); border-left: 3px solid #f94f95; }
.lc-7 { background: rgba(160,249,79,0.18); border-left: 3px solid #a0f94f; }

.wall-lc-0 { background: rgba(79,156,249,0.35); }
.wall-lc-1 { background: rgba(249,123,79,0.35); }
.wall-lc-2 { background: rgba(79,201,138,0.35); }
.wall-lc-3 { background: rgba(249,196,79,0.35); }
.wall-lc-4 { background: rgba(190,79,249,0.35); }
.wall-lc-5 { background: rgba(79,220,249,0.35); }
.wall-lc-6 { background: rgba(249,79,149,0.35); }
.wall-lc-7 { background: rgba(160,249,79,0.35); }

.empty-state {
  text-align: center;
  padding: 3rem;
  color: var(--text3);
  font-size: 0.82rem;
  font-family: var(--mono);
}

.print-btn {
  margin-left: 0.75rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text2);
  font-family: var(--sans);
  font-size: 0.8rem;
  padding: 6px 14px;
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.print-btn:hover {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
}
.print-btn svg { flex-shrink: 0; }

#print-frame {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  border: none;
  z-index: 99999;
  background: #fff;
}
@media print {
  body > *:not(#print-frame) { display: none !important; }
  #print-frame { display: block !important; position: static !important; width: 100% !important; height: auto !important; }
}
/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE – Tablet & Mobile
   ─────────────────────────────────────────────────────────────
   1200px  Breiter Desktop     → volle Sidebar 340px
   1100px  Tablet landscape    → Sidebar 260px, h2 klein
    800px  Tablet portrait     → Sidebar = Drawer
    480px  Smartphone          → Bottom Nav, alle Inputs groß
   ═══════════════════════════════════════════════════════════════ */

/* ── 1100px ───────────────────────────────────────────────── */
@media (max-width: 1100px) {
  .app { grid-template-columns: 260px 1fr; }
  header h2 { font-size: 0.85rem; }
}

/* ── 800px: Sidebar → Drawer ──────────────────────────────── */
@media (max-width: 800px) {

  /* Header */
  header {
    padding: 0 0.75rem;
    gap: 0.5rem;
    height: 52px;
  }
  header h2   { display: none; }
  header .tag { display: none; }
  header > a  { display: none !important; }   /* Logo verstecken */

  /* Hamburger einblenden */
  .sidebar-toggle {
    display: flex !important;
    align-items: center;
    justify-content: center;
    min-width: 40px; width: 40px; height: 40px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    color: var(--text2);
    flex-shrink: 0;
    transition: all 0.15s;
    order: -1;                         /* ganz links */
    touch-action: manipulation;
  }
  .sidebar-toggle:hover,
  .sidebar-toggle:active { color: var(--accent); border-color: var(--accent); }

  /* App wird einspaltig */
  .app {
    grid-template-columns: 1fr;
    height: calc(100vh - 52px);
  }

  /* Sidebar schiebt sich von links rein */
  .sidebar {
    position: fixed;
    top: 52px; left: 0;
    width: min(300px, 88vw);
    height: calc(100vh - 52px);
    z-index: 200;
    transform: translateX(-100%);
    transition: transform 0.28s cubic-bezier(.4,0,.2,1);
    box-shadow: 4px 0 32px rgba(0,0,0,0.5);
    overflow-y: auto;
  }
  .sidebar.open { transform: translateX(0); }

  .sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 52px 0 0 0;
    background: rgba(0,0,0,0.6);
    z-index: 199;
    backdrop-filter: blur(2px);
    animation: fadeInBd 0.2s ease;
  }
  .sidebar-backdrop.show { display: block; }
  @keyframes fadeInBd { from { opacity:0; } to { opacity:1; } }

  /* Main füllt gesamte Breite */
  .main { grid-column: 1; padding: 1rem; }

  /* Nav & Buttons kompakter */
  header nav button, .tab-nav {
    padding: 6px 10px;
    font-size: 0.74rem;
    min-height: 36px;
  }
  .home-btn { padding: 6px 10px; font-size: 0.74rem; min-height: 36px; }

  .print-btn          { padding: 7px 10px; margin-left: 0.2rem; min-height: 36px; }
  .print-btn span     { display: none; }
  .print-orient-toggle{ display: none; }
  .header-actions     { gap: 0.15rem; }

  /* Klimagitter 4-spaltig auf Tablet */
  .climate-grid { grid-template-columns: 1fr 1fr 1fr 1fr; }
  .chart-wrap   { height: 220px; }
}

/* ── 480px: Smartphone ────────────────────────────────────── */
@media (max-width: 480px) {

  /* Header */
  header {
    padding: 0 0.6rem;
    gap: 0.35rem;
    height: 50px;
  }
  header h1 { font-size: 0.68rem; letter-spacing: 0.03em; }

  /* App & Sidebar Höhe: Platz für Bottom Nav */
  .app {
    height: calc(100vh - 50px - 56px);
    overflow: hidden;
  }
  .sidebar {
    top: 50px;
    height: calc(100vh - 50px - 56px);
    width: min(290px, 92vw);
  }
  .sidebar-backdrop { inset: 50px 0 56px 0; }

  /* Header-Nav ausblenden → Bottom Nav übernimmt */
  header nav { display: none; }
  .home-btn  { display: none; }
  .nav-divider { display: none; }

  /* Hamburger etwas kleiner */
  .sidebar-toggle { min-width: 38px; width: 38px; height: 38px; }

  /* ── BOTTOM NAVIGATION ──────────────────────────────────── */
  .bottom-nav {
    display: flex !important;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    height: 56px;
    background: var(--surface);
    border-top: 1px solid var(--border);
    z-index: 300;
    align-items: stretch;
    safe-area-inset-bottom: env(safe-area-inset-bottom);
  }
  .bottom-nav-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    background: none;
    border: none;
    color: var(--text3);
    font-size: 0.55rem;
    font-family: var(--sans);
    cursor: pointer;
    transition: color 0.15s;
    padding: 6px 2px 8px;
    border-top: 2px solid transparent;
    letter-spacing: 0.02em;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
  }
  .bottom-nav-btn svg { width: 20px; height: 20px; }
  .bottom-nav-btn.active {
    color: var(--accent);
    border-top-color: var(--accent);
  }

  /* Main: volle Breite, etwas Innenabstand */
  .main { padding: 0.6rem; padding-bottom: 0.6rem; }

  /* ── Touch-optimierte Eingaben ── */
  .input-group input,
  .input-group select,
  .layer-select-row select,
  .layer-param input {
    min-height: 44px;          /* Apple HIG Mindestgröße */
    font-size: 1rem;           /* Verhindert iOS-Zoom */
    padding: 10px 12px;
  }
  .add-layer-btn { min-height: 44px; font-size: 0.85rem; }
  .del-btn       { min-width: 44px; height: 44px; width: 44px; }
  .orient-btn    { min-height: 44px; }

  /* Klimagitter 2-spaltig */
  .climate-grid { grid-template-columns: 1fr 1fr; gap: 0.6rem; }

  /* Schichten */
  .layer-params { grid-template-columns: 1fr 1fr 1fr; gap: 5px; }
  .layer-row    { padding: 0.65rem; }

  /* Charts kleiner */
  .chart-wrap { height: 200px; }

  /* Ergebnisse */
  .results-grid { grid-template-columns: 1fr 1fr; gap: 0.5rem; }
  .result-card  { padding: 0.6rem; }
  .result-card .val { font-size: 0.95rem; }

  /* Sidebar sections kompakter */
  .section { padding: 0.9rem 0.85rem; }

  /* Materialtabelle: unwichtige Spalten ausblenden */
  .mat-table th:nth-child(2), .mat-table td:nth-child(2),
  .mat-table th:nth-child(6), .mat-table td:nth-child(6) { display: none; }

  /* Material-Formular stapeln */
  .form-row { grid-template-columns: 1fr 1fr !important; gap: 0.4rem; }
  .form-row .fi:first-child { grid-column: span 2; }
  .form-row input, .form-row select { min-height: 44px; font-size: 1rem; }
  .btn-primary, .btn-ghost { min-height: 44px; font-size: 0.88rem; padding: 10px 16px; }

  /* Print-Buttons */
  .print-btn { padding: 7px 8px; margin-left: 0.1rem; min-height: 38px; }
  .header-actions { gap: 0.1rem; }

  /* Toast unten über Bottom Nav */
  #save-toast { bottom: 68px !important; }

  /* Schematik */
  .schematic-h { min-height: 90px; }
}

/* ── Safe Area für Geräte mit Notch / Home Indicator ─────── */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
  .bottom-nav {
    padding-bottom: env(safe-area-inset-bottom);
    height: calc(56px + env(safe-area-inset-bottom));
  }
  @media (max-width: 480px) {
    .app     { height: calc(100vh - 50px - 56px - env(safe-area-inset-bottom)); }
    .sidebar { height: calc(100vh - 50px - 56px - env(safe-area-inset-bottom)); }
  }
}

@media print {
  @page {
    size: A4 portrait;
    margin: 15mm 15mm 15mm 15mm;
  }

  * { -webkit-print-color-adjust: exact !important; print-color-adjust: exact !important; }

  body {
    background: #fff !important;
    color: #111 !important;
    font-family: 'DM Sans', Arial, sans-serif;
    font-size: 10pt;
    display: block !important;
  }

  header, .sidebar, .tab-bar, .tab-nav, .print-btn { display: none !important; }

  .app { display: block !important; height: auto !important; overflow: visible !important; }
  .main { display: block !important; overflow: visible !important; padding: 0 !important; }
  .tab-content { display: block !important; }

  /* Print layout wrapper (injected by JS) */
  .print-layout {
    display: block;
  }

  /* Report header */
  .print-header {
    display: flex !important;
    justify-content: space-between;
    align-items: flex-start;
    border-bottom: 2px solid #1F497D;
    padding-bottom: 6mm;
    margin-bottom: 6mm;
  }
  .print-header h1 {
    font-family: 'Space Mono', monospace;
    font-size: 16pt;
    color: #1F497D;
    letter-spacing: 0.05em;
    margin: 0;
  }
  .print-header .print-meta {
    text-align: right;
    font-size: 8pt;
    color: #666;
    line-height: 1.6;
  }

  /* Section title */
  .print-section-title {
    display: block !important;
    font-family: 'Space Mono', monospace;
    font-size: 7pt;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #888;
    border-bottom: 1px solid #ddd;
    padding-bottom: 2mm;
    margin: 5mm 0 3mm;
  }

  /* Results grid */
  .print-results {
    display: grid !important;
    grid-template-columns: repeat(4, 1fr);
    gap: 3mm;
    margin-bottom: 5mm;
  }
  .print-result-card {
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 3mm;
    text-align: center;
    background: #f8f9fc !important;
  }
  .print-result-card .pval {
    font-family: 'Space Mono', monospace;
    font-size: 13pt;
    font-weight: bold;
    color: #1F497D;
  }
  .print-result-card .pval.pdanger { color: #c00; }
  .print-result-card .pval.psuccess { color: #2a7a2a; }
  .print-result-card .plbl {
    font-size: 7pt;
    color: #888;
    font-family: 'Space Mono', monospace;
    margin-top: 1mm;
  }

  /* Climate info */
  .print-climate {
    display: grid !important;
    grid-template-columns: 1fr 1fr;
    gap: 3mm;
    margin-bottom: 4mm;
  }
  .print-climate-box {
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 3mm;
    background: #f8f9fc !important;
  }
  .print-climate-box h4 {
    font-size: 8pt;
    color: #1F497D;
    margin-bottom: 2mm;
    font-family: 'Space Mono', monospace;
  }
  .print-climate-box table { width: 100%; font-size: 9pt; }
  .print-climate-box td { padding: 1mm 2mm; color: #333; }
  .print-climate-box td:last-child { font-weight: bold; text-align: right; }

  /* Layer table */
  .print-layer-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 9pt;
    margin-bottom: 4mm;
  }
  .print-layer-table th {
    background: #1F497D !important;
    color: #fff !important;
    font-family: 'Space Mono', monospace;
    font-size: 7pt;
    letter-spacing: 0.06em;
    padding: 2mm 3mm;
    text-align: left;
  }
  .print-layer-table td {
    padding: 2mm 3mm;
    border-bottom: 1px solid #eee;
    color: #333;
  }
  .print-layer-table tr:nth-child(even) td { background: #f4f6fb !important; }
  .print-layer-table td.cond-yes { color: #c00; font-weight: bold; }
  .print-layer-table td.cond-no  { color: #2a7a2a; }

  /* Charts */
  .print-charts {
    display: grid !important;
    grid-template-columns: 1fr 1fr;
    gap: 5mm;
    page-break-inside: avoid;
    margin-bottom: 5mm;
  }
  .print-chart-box {
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 3mm;
  }
  .print-chart-box h4 {
    font-size: 8pt;
    color: #1F497D;
    font-family: 'Space Mono', monospace;
    margin-bottom: 2mm;
  }
  .print-chart-box canvas { width: 100% !important; height: 180px !important; }

  /* Schematic */
  .print-schematic {
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 4mm;
    margin-bottom: 5mm;
    page-break-inside: avoid;
  }
  .print-schematic h4 {
    font-size: 8pt;
    color: #1F497D;
    font-family: 'Space Mono', monospace;
    margin-bottom: 3mm;
  }
  .print-schematic-h {
    display: flex !important;
    height: 50px;
    border: 1px solid #ccc;
    border-radius: 3px;
    overflow: hidden;
  }
  .print-schematic-label {
    display: flex;
    justify-content: space-between;
    font-size: 7pt;
    color: #888;
    font-family: 'Space Mono', monospace;
    margin-top: 2mm;
  }

  /* Condensation warning */
  .print-warn {
    background: #fff0f0 !important;
    border: 1.5px solid #c00;
    border-radius: 4px;
    padding: 3mm 4mm;
    color: #c00;
    font-size: 9pt;
    font-weight: bold;
    margin: 3mm 0;
  }

  /* Footer */
  .print-footer {
    display: block !important;
    margin-top: 8mm;
    border-top: 1px solid #ddd;
    padding-top: 3mm;
    font-size: 7pt;
    color: #aaa;
    font-family: 'Space Mono', monospace;
    display: flex;
    justify-content: space-between;
  }

  .no-print { display: none !important; }
  .chart-panel, .wall-schematic, .data-table, .mat-lib { display: none !important; }
}

/* ── HOME BUTTON ─────────────────────────────────────────── */
.home-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text2);
  font-family: var(--sans);
  font-size: 0.82rem;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.home-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(79,156,249,0.08);
}
.nav-divider {
  width: 1px;
  height: 20px;
  background: var(--border);
  margin: 0 0.25rem;
}

/* ── SCHRAFFUR-PICKER ────────────────────────────────────────── */
.hatch-opt {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  padding: 3px;
  border: 2px solid var(--border);
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.15s;
  background: var(--surface2);
}
.hatch-opt:hover {
  border-color: var(--accent);
  transform: scale(1.08);
}
.hatch-opt.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(79,156,249,0.35);
  background: rgba(79,156,249,0.1);
}
.hatch-opt svg {
  border-radius: 2px;
  display: block;
}

/* ── PRINT ORIENTATION TOGGLE ─────────────────────────────── */
.print-orient-toggle {
  display: flex;
  gap: 2px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 3px;
  margin-left: 0.5rem;
}
.po-btn {
  background: none;
  border: 1px solid transparent;
  border-radius: 5px;
  color: var(--text3);
  cursor: pointer;
  padding: 4px 8px;
  display: flex;
  align-items: center;
  transition: all 0.15s;
}
.po-btn:hover { color: var(--text2); background: var(--surface); }
.po-btn.active {
  background: var(--accent);
  color: #000;
  border-color: transparent;
}
.po-btn.active svg rect,
.po-btn.active svg path { stroke: #000; fill: #000; }

/* ── HEADER ACTIONS (Export / Import / Reset) ─────────────── */
.header-actions {
  display: flex;
  gap: 0.35rem;
  align-items: center;
}
.action-export { border-color: var(--success) !important; color: var(--success) !important; }
.action-export:hover { background: var(--success) !important; color: #000 !important; }
.action-import { border-color: var(--accent) !important; color: var(--accent) !important; }
.action-import:hover { background: var(--accent) !important; color: #000 !important; }

/* On small screens collapse to icons only */
@media (max-width: 800px) {
  .header-actions .print-btn span { display: none; }
  .header-actions { gap: 0.2rem; }
}