/* ============================================================
   WÄRMESTROM — STYLESHEET
   Swiss engineering / precision industrial
   Mobile-first responsive · EN ISO 6946
   ============================================================ */

/* ============================================================
   SHARED TOKENS (theme-independent)
   ============================================================ */
:root {
  --font-main: 'Barlow', sans-serif;
  --font-mono: 'DM Mono', monospace;
  --font-cond: 'Barlow Condensed', sans-serif;
  --radius: 6px;
  --radius-lg: 10px;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.18);
  --transition: 0.18s ease;
  --header-h: 56px;
  --bottom-nav-h: 56px;
  --orange: #e85d1a;
  --orange-hover: #d04d0e;
  --amber: #f5a623;
  --green: #1a9e4a;
  --green-bg: #d1fae5;
  --red: #dc2626;
  --red-bg: #fee2e2;
}

/* ============================================================
   LIGHT THEME — Modern Clean
   ============================================================ */
:root, [data-theme="light"] {
  /* Struktur-Töne: warmes Neutralgrau statt Blau */
  --navy:              #1a1a2e;
  --navy-mid:          #2d2d44;
  --bg-app:            #f2f3f5;   /* neutrales Hellgrau */
  --bg-card:           #ffffff;
  --bg-header:         #1a1a2e;   /* fast Schwarz, wird per Akzent überschrieben */
  --bg-input:          #ffffff;
  --bg-table-head:     #f7f8f9;
  --bg-modal:          #ffffff;
  --bg-modal-footer:   #f7f8f9;
  --bg-result:         #1a1a2e;
  --bg-layer:          #ffffff;
  --bg-layers-header:  #f7f8f9;
  --bg-bottom-nav:     #1a1a2e;
  --border:            #e3e4e8;
  --border-strong:     #1a1a2e;
  --text-primary:      #0d0d14;
  --text-secondary:    #3a3a50;
  --text-muted:        #7a7a96;
  --text-label:        #3a3a50;
  --text-heading:      #1a1a2e;
  --text-input:        #0d0d14;
  --input-border:      #d8d9e0;
  --computed-bg:       #f2f3f5;
  --computed-color:    #1a1a2e;
  --info-bg:           #f5f5fa;
  --info-border:       #d0d0e8;
  --info-text:         #3a3a50;
  --zone-card-bg:      #ffffff;
  --constr-card-bg:    #ffffff;
  --surface-row-bg:    #ffffff;
  --saved-row-bg:      #ffffff;
  --dim-btn-bg:        #ffffff;
  --dim-btn-color:     #1a1a2e;
  --dim-presets-bg:    #f7f8f9;
  --ctab-bg:           #eeeef4;
  --ctab-border:       #e3e4e8;
  --ctab-active-bg:    #1a1a2e;
  --ctab-active-color: #ffffff;
  --tab-active-bg:     #2d2d44;
  --scrollbar-track:   #ebebf0;
  --scrollbar-thumb:   #c8c8d8;
}

/* ============================================================
   DARK THEME — Modern Charcoal (kein Navy-Blau)
   ============================================================ */
body.dark {
  --navy:              #e8e8f2;
  --navy-mid:          #c8c8dc;
  --bg-app:            #111114;   /* fast Schwarz, neutral charcoal */
  --bg-card:           #1c1c22;   /* etwas heller, leicht warm */
  --bg-header:         #0a0a0d;
  --bg-input:          #111114;
  --bg-table-head:     #161619;
  --bg-modal:          #1c1c22;
  --bg-modal-footer:   #161619;
  --bg-result:         #0a0a0d;
  --bg-layer:          #111114;
  --bg-layers-header:  #111114;
  --bg-bottom-nav:     #0a0a0d;
  --border:            #2a2a34;
  --border-strong:     #3c3c50;
  --text-primary:      #ededf5;
  --text-secondary:    #b8b8cc;
  --text-muted:        #6a6a80;
  --text-label:        #9898b0;
  --text-heading:      #ededf5;
  --text-input:        #ededf5;
  --input-border:      #2a2a34;
  --computed-bg:       #0a0a0d;
  --computed-color:    #b0b0e0;
  --info-bg:           #14141a;
  --info-border:       #28283a;
  --info-text:         #6a6a80;
  --zone-card-bg:      #1c1c22;
  --constr-card-bg:    #1c1c22;
  --surface-row-bg:    #1c1c22;
  --saved-row-bg:      #1c1c22;
  --dim-btn-bg:        #1c1c22;
  --dim-btn-color:     #9898b0;
  --dim-presets-bg:    #111114;
  --ctab-bg:           #111114;
  --ctab-border:       #2a2a34;
  --ctab-active-bg:    #ededf5;
  --ctab-active-color: #111114;
  --tab-active-bg:     #1c1c22;
  --scrollbar-track:   #1c1c22;
  --scrollbar-thumb:   #2a2a34;
  --green:             #34d399;
  --green-bg:          #052e1a;
  --red:               #f87171;
  --red-bg:            #2d0a0a;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 14px; scroll-behavior: smooth; -webkit-tap-highlight-color: transparent;
  overflow-x: hidden; }
*, *::before, *::after { box-sizing: border-box; }
body {
  font-family: var(--font-main);
  background: var(--bg-app);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
  /* reserve space for fixed bottom nav on mobile */
  padding-bottom: env(safe-area-inset-bottom);
}

/* Global theme transition */
body { transition: background-color 0.25s ease, color 0.2s ease; }

/* ============================================================
   SCROLLBAR STYLING
   ============================================================ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--scrollbar-track); border-radius: 3px; }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ============================================================
   HEADER — DESKTOP
   ============================================================ */
.app-header {
  position: sticky; top: 0; z-index: 200;
  background: var(--bg-header);
  height: var(--header-h);
  display: flex; align-items: center; gap: 1rem;
  padding: 0 1.25rem;
  box-shadow: 0 2px 16px rgba(0,0,0,0.3);
}

.header-left {
  display: flex; align-items: center; gap: 0.6rem;
  flex-shrink: 0;
}

.logo {
  border-radius: 8px; opacity: 1;
  border: rgba(255,174,0,0.3) 3px double;
  filter: drop-shadow(rgb(255,204,0) 0px 6px 30px);
  width: 40px; height: 37px; object-fit: contain;
}

.header-title { display: flex; flex-direction: column; line-height: 1.2; }
.title-main {
  font-family: var(--font-cond); font-weight: 700;
  font-size: 1rem; color: #fff; letter-spacing: 0.5px;
}
.title-sub {
  font-size: 0.62rem; color: #6b7280; letter-spacing: 0.5px;
  font-family: var(--font-mono);
}

/* Tab nav — hidden on mobile, shown on desktop */
.tab-nav {
  display: flex; align-items: center; gap: 2px; flex: 1;
  overflow-x: auto; scrollbar-width: none;
}
.tab-nav::-webkit-scrollbar { display: none; }

.tab-btn {
  background: transparent; border: none;
  color: #6b7280; cursor: pointer;
  font-family: var(--font-cond); font-weight: 600; font-size: 0.8rem;
  letter-spacing: 0.5px; text-transform: uppercase;
  padding: 0.4rem 0.8rem; border-radius: var(--radius);
  transition: all var(--transition); white-space: nowrap;
  min-height: 36px;
}
.tab-btn:hover { color: #fff; background: rgba(255,255,255,0.08); }
.tab-btn.active { color: #fff; background: var(--tab-active-bg); }
.tab-btn.result-tab { color: var(--amber); }
.tab-btn.result-tab.active { background: rgba(245,166,35,0.15); }

.header-actions {
  display: flex; align-items: center; gap: 0.3rem;
  flex-shrink: 0;
}

.btn-icon {
  background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.1);
  color: #9ca3af; cursor: pointer;
  width: 34px; height: 34px; min-width: 34px;
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition); flex-shrink: 0;
}
.btn-icon:hover { background: rgba(255,255,255,0.15); color: #fff; }
.btn-icon:active { transform: scale(0.92); }
.btn-icon .icon { width: 16px; height: 16px; stroke: currentColor; display: block; }

/* Moon/Sun toggle */
.icon-sun { display: none; }
.icon-moon { display: block; }
body.dark .icon-sun { display: block; }
body.dark .icon-moon { display: none; }

/* ============================================================
   BOTTOM NAV — MOBILE ONLY
   ============================================================ */
.bottom-nav {
  display: none;
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 9000;
  background: var(--bg-bottom-nav);
  border-top: 1px solid rgba(255,255,255,0.1);
  box-shadow: 0 -4px 24px rgba(0,0,0,0.4);
  padding-bottom: max(env(safe-area-inset-bottom, 0px), 8px);
}
.bottom-nav-inner {
  display: flex; height: var(--bottom-nav-h);
  align-items: stretch;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.bottom-nav-inner::-webkit-scrollbar { display: none; }
.bottom-tab-btn {
  flex: 0 0 auto;          /* nicht schrumpfen — jeder Button gleich breit */
  min-width: 60px;
  max-width: 80px;
  width: calc(100vw / 6);
  background: transparent; border: none;
  color: #6b7280; cursor: pointer;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 2px; padding: 0 2px;
  font-family: var(--font-cond); font-size: 0.52rem;
  font-weight: 700; text-transform: uppercase; letter-spacing: 0.2px;
  transition: all var(--transition);
}
.bottom-tab-btn .btab-icon {
  width: 18px; height: 18px; stroke: currentColor; fill: none;
  stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round;
  flex-shrink: 0;
}
.bottom-tab-btn span {
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  width: 100%; text-align: center; padding: 0 2px;
}
.bottom-tab-btn.active { color: var(--orange); }
.bottom-tab-btn.result-tab.active { color: var(--amber); }

/* ============================================================
   MAIN CONTENT
   ============================================================ */
.main-content {
  max-width: 1200px; margin: 0 auto;
  padding: 1.25rem 1.25rem 2rem;
}

.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeIn 0.18s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   PANEL HEADERS
   ============================================================ */
.panel-header { margin-bottom: 1.25rem; }
.panel-header h2 {
  font-family: var(--font-cond); font-weight: 700;
  font-size: 1.4rem; color: var(--text-heading);
}
.panel-header p { color: var(--text-muted); font-size: 0.82rem; margin-top: 0.2rem; }

.panel-header-flex {
  display: flex; align-items: flex-start;
  justify-content: space-between; gap: 0.75rem; margin-bottom: 1.25rem;
  flex-wrap: wrap;
}
.panel-header-flex h2, .panel-header-flex h3 {
  font-family: var(--font-cond); font-weight: 700;
  font-size: 1.4rem; color: var(--text-heading);
}
.panel-header-flex h3 { font-size: 1.1rem; }
.panel-header-flex p { color: var(--text-muted); font-size: 0.82rem; margin-top: 0.2rem; }

h3 {
  font-family: var(--font-cond); font-weight: 600;
  font-size: 1rem; color: var(--text-heading);
}

/* ============================================================
   FORMS
   ============================================================ */
.form-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0.875rem; }
.form-grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0.875rem; }
.span-2 { grid-column: span 2; }
.span-3 { grid-column: span 3; }

.form-group { display: flex; flex-direction: column; gap: 0.3rem; }
.form-group label {
  font-weight: 600; font-size: 0.72rem;
  color: var(--text-label); letter-spacing: 0.3px; text-transform: uppercase;
}

input[type="text"], input[type="number"], input[type="date"],
select, textarea {
  background: var(--bg-input);
  border: 1.5px solid var(--input-border);
  border-radius: var(--radius);
  padding: 0.55rem 0.65rem;
  font-family: var(--font-main); font-size: 0.875rem;
  color: var(--text-input);
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
  /* Mobile: prevent zoom on iOS (font-size >= 16px on focus) */
  font-size: max(0.875rem, 16px);
}
@media (min-width: 640px) {
  input[type="text"], input[type="number"], input[type="date"],
  select, textarea { font-size: 0.875rem; }
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(232,93,26,0.12);
}
input.computed {
  background: var(--computed-bg); color: var(--computed-color);
  font-family: var(--font-mono); font-weight: 500; cursor: default;
}
textarea { resize: vertical; }
.field-hint { font-size: 0.7rem; color: var(--text-muted); font-family: var(--font-mono); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn-primary {
  background: var(--orange); color: #fff; border: none;
  border-radius: var(--radius); padding: 0.55rem 1.1rem;
  font-family: var(--font-cond); font-weight: 700; font-size: 0.82rem;
  letter-spacing: 0.5px; text-transform: uppercase; cursor: pointer;
  transition: all var(--transition); white-space: nowrap;
  min-height: 40px;
}
.btn-primary:hover { background: var(--orange-hover); transform: translateY(-1px); }
.btn-primary:active { transform: scale(0.97); }

.btn-secondary {
  background: transparent; color: var(--text-secondary);
  border: 1.5px solid var(--border-strong); border-radius: var(--radius);
  padding: 0.5rem 1rem; font-family: var(--font-cond);
  font-weight: 700; font-size: 0.82rem; letter-spacing: 0.5px;
  text-transform: uppercase; cursor: pointer;
  transition: all var(--transition); white-space: nowrap; min-height: 40px;
}
.btn-secondary:hover { border-color: var(--orange); color: var(--orange); }

.btn-accent {
  background: rgba(245,166,35,0.12); color: var(--amber);
  border: 1.5px solid rgba(245,166,35,0.3); border-radius: var(--radius);
  padding: 0.5rem 1rem; font-family: var(--font-cond);
  font-weight: 700; font-size: 0.82rem; text-transform: uppercase;
  cursor: pointer; transition: all var(--transition); min-height: 40px;
}
.btn-accent:hover { background: rgba(245,166,35,0.2); }

.btn-sm {
  background: var(--navy); color: #fff; border: none;
  border-radius: var(--radius); padding: 0.3rem 0.75rem;
  font-family: var(--font-cond); font-weight: 700; font-size: 0.75rem;
  text-transform: uppercase; cursor: pointer;
  transition: background var(--transition); min-height: 34px;
}
body.dark .btn-sm { background: var(--border-strong); color: var(--text-primary); }
.btn-sm:hover { opacity: 0.85; }

.btn-danger {
  background: transparent; color: var(--red);
  border: 1.5px solid var(--red); border-radius: var(--radius);
  padding: 0.3rem 0.6rem; font-size: 0.75rem; cursor: pointer;
  transition: all var(--transition); min-height: 34px; font-weight: 600;
}
.btn-danger:hover { background: var(--red); color: #fff; }

.btn-edit {
  background: transparent; color: var(--text-muted);
  border: 1.5px solid var(--border); border-radius: var(--radius);
  padding: 0.3rem 0.6rem; font-size: 0.75rem;
  cursor: pointer; transition: all var(--transition); min-height: 34px;
}
.btn-edit:hover { border-color: var(--orange); color: var(--orange); }

.btn-group { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.td-actions { display: flex; gap: 0.4rem; justify-content: flex-end; flex-wrap: wrap; }

/* ============================================================
   SECTION DIVIDER
   ============================================================ */
.section-divider { height: 1px; background: var(--border); margin: 1.25rem 0; }

/* ============================================================
   ROOM DIMS
   ============================================================ */
.room-dims-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 1.25rem; align-items: center;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.25rem;
  margin-bottom: 1.25rem;
}
.dims-column { display: flex; flex-direction: column; gap: 0.7rem; }
.dims-label {
  font-family: var(--font-cond); font-weight: 700; font-size: 0.75rem;
  text-transform: uppercase; letter-spacing: 1px; color: var(--orange);
}
.dims-arrow { font-size: 1.2rem; color: var(--border); text-align: center; }

/* ============================================================
   RESULT BOX
   ============================================================ */
.result-box {
  background: var(--bg-result); border-radius: var(--radius-lg);
  padding: 1rem 1.25rem; display: flex; gap: 1.5rem; flex-wrap: wrap;
  margin-top: 0.75rem;
}
.result-item { display: flex; align-items: baseline; gap: 0.4rem; }
.result-label {
  font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.5px;
  color: #6b7280; font-family: var(--font-cond);
}
.result-value {
  font-family: var(--font-mono); font-weight: 500;
  font-size: 1.15rem; color: #fff;
}
.result-unit { font-size: 0.75rem; color: #6b7280; }
.mono { font-family: var(--font-mono); }

/* ============================================================
   TABLES
   ============================================================ */
.table-wrapper {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow-x: auto; -webkit-overflow-scrolling: touch;
}
.data-table {
  width: 100%; border-collapse: collapse; font-size: 0.82rem;
  min-width: 0; width: 100%;
}
.data-table thead tr {
  background: var(--bg-table-head);
  border-bottom: 2px solid var(--border-strong);
}
.data-table th {
  padding: 0.65rem 0.875rem; text-align: left;
  font-family: var(--font-cond); font-weight: 700; font-size: 0.72rem;
  text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-heading);
  white-space: nowrap;
}
.data-table td {
  padding: 0.6rem 0.875rem; border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}
.data-table tbody tr:hover { background: var(--bg-table-head); }
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tfoot tr { background: var(--bg-result); }
.data-table tfoot td { padding: 0.65rem 0.875rem; color: #fff; font-weight: 600; border: none; }
.data-table .col-actions { width: 1%; white-space: nowrap; }
.cell-number { font-family: var(--font-mono); text-align: right; }
.cell-q-ok  { color: var(--green); font-weight: 700; font-family: var(--font-mono); }
.cell-q-warn { color: var(--red); font-weight: 700; font-family: var(--font-mono); }
.row-q-warn { background-color: var(--red-bg) !important; }

/* ============================================================
   MODALS
   ============================================================ */
.modal-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(3px);
  z-index: 300; align-items: flex-end; justify-content: center;
  padding: 0;
}
.modal-overlay.open { display: flex; }

.modal {
  background: var(--bg-modal); width: 100%; max-width: 560px;
  /* Slide up from bottom on mobile */
  max-height: 92dvh; max-height: 92vh;
  display: flex; flex-direction: column;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  box-shadow: 0 -8px 40px rgba(0,0,0,0.3);
  animation: slideUp 0.24s ease;
  margin: 0 auto;
}
.modal-large { max-width: 100%; }

/* On wider screens → centered dialog instead of sheet */
@media (min-width: 640px) {
  .modal-overlay { align-items: center; padding: 1rem; }
  .modal {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.22s ease;
    max-width: 560px;
  }
  .modal-large { max-width: 860px; }
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to   { transform: translateY(0); }
}
@keyframes modalIn {
  from { opacity: 0; transform: translateY(-12px) scale(0.97); }
  to   { opacity: 1; transform: none; }
}

/* Drag handle indicator on mobile */
.modal::before {
  content: '';
  display: block; width: 40px; height: 4px;
  background: var(--border); border-radius: 2px;
  margin: 10px auto 0; flex-shrink: 0;
}
@media (min-width: 640px) { .modal::before { display: none; } }

.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 1.25rem 0.875rem;
  border-bottom: 2px solid var(--border-strong);
  flex-shrink: 0;
}
.modal-header h3 {
  font-family: var(--font-cond); font-weight: 700;
  font-size: 1.1rem; color: var(--text-heading);
}
.modal-close {
  background: none; border: none; cursor: pointer;
  font-size: 1.4rem; color: var(--text-muted); line-height: 1;
  width: 32px; height: 32px; min-width: 32px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%; transition: all var(--transition);
}
.modal-close:hover { background: var(--border); color: var(--text-primary); }

.modal-body {
  padding: 1.25rem; overflow-y: auto; flex: 1;
  display: flex; flex-direction: column; gap: 1rem;
  -webkit-overflow-scrolling: touch;
}

.modal-footer {
  padding: 0.875rem 1.25rem;
  border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: flex-end;
  gap: 0.6rem; flex-shrink: 0; flex-wrap: wrap;
  background: var(--bg-modal-footer);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  padding-bottom: max(0.875rem, env(safe-area-inset-bottom));
}

/* ============================================================
   LAYERS (inside modal)
   ============================================================ */
.layers-section {
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
}
.layers-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.55rem 0.875rem;
  background: var(--bg-layers-header); border-bottom: 1px solid var(--border);
}
.layers-title {
  font-family: var(--font-cond); font-weight: 700; font-size: 0.75rem;
  text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-heading);
}
.layers-title em { font-style: italic; font-weight: 400; color: var(--text-muted); }
.layers-list {
  padding: 0.5rem; display: flex; flex-direction: column; gap: 0.4rem;
  max-height: 260px; overflow-y: auto; -webkit-overflow-scrolling: touch;
}

.layer-row {
  display: grid; grid-template-columns: 1fr 90px 32px;
  gap: 0.4rem; align-items: center;
  background: var(--bg-layer); padding: 0.4rem 0.5rem;
  border-radius: var(--radius); border: 1px solid var(--border);
}
.deduction-row {
  display: grid; grid-template-columns: 1fr 80px 56px 32px;
  gap: 0.4rem; align-items: center;
  background: var(--bg-layer); padding: 0.4rem 0.5rem;
  border-radius: var(--radius); border: 1px solid var(--border);
}
.layer-row input, .layer-row select,
.deduction-row input { font-size: 0.82rem !important; padding: 0.3rem 0.45rem; min-height: 36px; }

.btn-remove {
  background: none; border: none; cursor: pointer;
  color: var(--text-muted); font-size: 1.1rem; line-height: 1;
  width: 28px; height: 28px; min-width: 28px;
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
}
.btn-remove:hover { background: var(--red-bg); color: var(--red); }

/* ============================================================
   CONSTRUCTION RESULT BAR
   ============================================================ */
.construction-result {
  display: flex; gap: 1.25rem; flex-wrap: wrap;
  background: var(--bg-result); border-radius: var(--radius);
  padding: 0.75rem 1rem; align-items: center;
}
.cres-item { display: flex; align-items: baseline; gap: 0.3rem; }
.cres-label { font-size: 0.7rem; color: #6b7280; font-family: var(--font-cond); text-transform: uppercase; }
.cres-val { font-family: var(--font-mono); font-weight: 500; font-size: 1rem; color: #fff; }
.cres-unit { font-size: 0.7rem; color: #6b7280; }

/* ============================================================
   CONSTRUCTIONS LIST & CARDS
   ============================================================ */
.construction-tabs {
  display: flex; gap: 4px; margin-bottom: 1rem; flex-wrap: wrap;
}
.ctab {
  background: var(--ctab-bg); border: 1px solid var(--ctab-border);
  border-radius: var(--radius); padding: 0.35rem 0.8rem;
  font-family: var(--font-cond); font-weight: 700; font-size: 0.75rem;
  text-transform: uppercase; letter-spacing: 0.5px;
  cursor: pointer; color: var(--text-muted); transition: all var(--transition);
  min-height: 34px;
}
.ctab:hover { color: var(--text-heading); border-color: var(--border-strong); }
.ctab.active { background: var(--ctab-active-bg); color: var(--ctab-active-color); border-color: var(--ctab-active-bg); }

.constructions-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}

.construction-card {
  background: var(--constr-card-bg); border: 1.5px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.1rem;
  transition: border-color var(--transition);
}
.construction-card:hover { border-color: var(--border-strong); box-shadow: var(--shadow); }
.construction-card.is-default { border-color: var(--amber); }
.card-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 0.5rem; margin-bottom: 0.6rem; }
.card-name { font-family: var(--font-cond); font-weight: 700; font-size: 0.9rem; color: var(--text-heading); }
.card-type-tag {
  background: var(--border-strong); color: #fff;
  font-family: var(--font-cond); font-size: 0.65rem; font-weight: 700;
  letter-spacing: 0.5px; text-transform: uppercase;
  padding: 0.15rem 0.45rem; border-radius: 3px; white-space: nowrap; flex-shrink: 0;
}
body.dark .card-type-tag { background: var(--border-strong); color: var(--text-primary); }
.card-badge {
  display: none; background: var(--amber); color: #fff;
  font-size: 0.62rem; font-family: var(--font-cond); font-weight: 700;
  text-transform: uppercase; padding: 0.15rem 0.45rem; border-radius: 3px; margin-left: 0.3rem;
}
.is-default .card-badge { display: inline-block; }
.card-layers { display: flex; flex-direction: column; gap: 2px; margin-bottom: 0.6rem; }
.card-layer {
  display: flex; justify-content: space-between; font-size: 0.75rem;
  color: var(--text-muted); padding: 0.18rem 0.45rem;
  background: var(--bg-table-head); border-radius: 3px;
}
.card-uval {
  display: flex; align-items: center; gap: 0.4rem;
  padding-top: 0.5rem; border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.card-uval-number { font-family: var(--font-mono); font-weight: 500; font-size: 1rem; color: var(--text-heading); }
.card-uval-label { font-size: 0.72rem; color: var(--text-muted); }
.card-actions { display: flex; gap: 0.4rem; margin-left: auto; }

/* ============================================================
   ZONES
   ============================================================ */
.zones-section { margin-bottom: 1rem; }
.zones-list { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 0.6rem; }
.zone-card {
  background: var(--zone-card-bg); border: 1.5px solid var(--border);
  border-radius: var(--radius); padding: 0.55rem 0.875rem;
  display: flex; align-items: center; gap: 0.65rem;
  transition: border-color var(--transition);
}
.zone-card:hover { border-color: var(--border-strong); }
.zone-temp { font-family: var(--font-mono); font-weight: 500; font-size: 1rem; color: var(--text-heading); }
.zone-name { font-size: 0.8rem; color: var(--text-muted); }
.zone-type {
  font-size: 0.65rem; font-family: var(--font-cond); font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.5px;
  background: var(--border); color: var(--text-muted);
  padding: 0.1rem 0.4rem; border-radius: 3px;
}
.zone-actions { display: flex; gap: 0.3rem; margin-left: auto; }

/* ============================================================
   SURFACES LIST
   ============================================================ */
.surfaces-list { display: flex; flex-direction: column; gap: 0.5rem; }

.surface-row {
  background: var(--surface-row-bg); border: 1.5px solid var(--border);
  border-radius: var(--radius); padding: 0.75rem 0.875rem;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr 1fr auto;
  gap: 0.6rem; align-items: center;
  transition: border-color var(--transition);
}
.surface-row:hover { border-color: var(--border-strong); }
.surface-name { font-weight: 600; color: var(--text-heading); font-size: 0.85rem; }
.surface-type-tag {
  font-family: var(--font-cond); font-size: 0.65rem; font-weight: 700;
  text-transform: uppercase; padding: 0.12rem 0.4rem;
  background: var(--border); color: var(--text-muted); border-radius: 3px;
  display: inline-block;
}
.surface-meta { font-size: 0.75rem; color: var(--text-muted); font-family: var(--font-mono); }
.q-ok  { color: var(--green); font-weight: 700; }
.q-warn { color: var(--red); font-weight: 700; }

/* ============================================================
   AREA MODE + DIM PRESETS
   ============================================================ */
.area-mode-row {
  display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap;
}
.area-mode-row select { flex: 0 0 auto; min-width: 180px; }
.dim-presets {
  display: flex; align-items: center; gap: 0.35rem; flex-wrap: wrap;
  background: var(--dim-presets-bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 0.28rem 0.55rem;
}
.dim-preset-label {
  font-size: 0.7rem; color: var(--text-muted);
  font-family: var(--font-cond); text-transform: uppercase; white-space: nowrap;
}
.btn-dim {
  background: var(--dim-btn-bg); color: var(--dim-btn-color);
  border: 1.5px solid var(--border); border-radius: var(--radius);
  padding: 0.22rem 0.5rem; font-family: var(--font-mono); font-size: 0.75rem;
  cursor: pointer; transition: all var(--transition); min-height: 30px;
}
.btn-dim:hover { border-color: var(--orange); color: var(--orange); }
.btn-dim.btn-dim-active { border-color: var(--orange); color: var(--orange); }

/* ============================================================
   SAVED PROJECTS
   ============================================================ */
.saved-list { display: flex; flex-direction: column; gap: 0.5rem; }
.saved-project-row {
  background: var(--saved-row-bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 0.7rem 0.875rem;
  display: flex; align-items: center; gap: 0.875rem; flex-wrap: wrap;
}
.saved-project-info { flex: 1; min-width: 120px; }
.saved-project-name { font-weight: 600; font-size: 0.875rem; color: var(--text-heading); }
.saved-project-meta { font-size: 0.73rem; color: var(--text-muted); }

/* ============================================================
   STORAGE INFO BOX
   ============================================================ */
.storage-info {
  display: flex; gap: 0.7rem; align-items: flex-start;
  background: var(--info-bg); border: 1px solid var(--info-border);
  border-radius: var(--radius); padding: 0.875rem 1rem;
  font-size: 0.8rem; color: var(--info-text); line-height: 1.6;
  margin-bottom: 1rem;
}
.storage-info-icon { font-size: 1.1rem; flex-shrink: 0; }
.storage-info strong { color: var(--text-heading); }
.storage-info em { font-style: normal; font-weight: 600; }

/* ============================================================
   AUSWERTUNG — SUMMARY + REPORT
   ============================================================ */
.report-header {
  background: var(--bg-result); border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem; margin-bottom: 1.25rem; color: #fff;
}
.report-title {
  font-family: var(--font-cond); font-weight: 700; font-size: 1.4rem;
}
.report-meta {
  display: flex; gap: 1.5rem; flex-wrap: wrap; margin-top: 0.4rem;
}
.report-meta-item { display: flex; gap: 0.35rem; font-size: 0.8rem; }
.rmi-label { color: #6b7280; }
.rmi-value { color: #fff; font-family: var(--font-mono); }

.result-summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 0.875rem; margin-bottom: 1.25rem;
}
.summary-card {
  background: var(--bg-card); border: 1.5px solid var(--border);
  border-radius: var(--radius-lg); padding: 0.875rem 1rem;
  border-top: 3px solid var(--orange);
}
.summary-card-label {
  font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.5px;
  color: var(--text-muted); font-family: var(--font-cond); margin-bottom: 0.2rem;
}
.summary-card-value {
  font-family: var(--font-mono); font-weight: 500; font-size: 1.3rem; color: var(--text-heading);
}
.summary-card-unit { font-size: 0.72rem; color: var(--text-muted); }

.construction-detail-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 0.875rem; margin-bottom: 0.6rem;
}
.construction-detail-title {
  font-family: var(--font-cond); font-weight: 700; font-size: 0.85rem;
  color: var(--text-muted); margin-bottom: 0.5rem; text-transform: uppercase;
}

/* ============================================================
   SKETCH LAYOUT
   ============================================================ */
.sketch-and-table { display: flex; flex-direction: column; gap: 1.25rem; margin-bottom: 1.25rem; }
.sketch-block {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.sketch-block svg {
  border-color: var(--border) !important;
  border-radius: var(--radius-lg) !important;
  background: transparent !important;
}
.sketch-table-block { overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* ============================================================
   MISC
   ============================================================ */
.empty-hint { color: var(--text-muted); font-size: 0.8rem; font-style: italic; padding: 0.6rem; }
.empty-state-hint {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 3rem 1rem; text-align: center; color: var(--text-primary);
}
.badge-ok   { background: var(--green-bg); color: var(--green); font-family: var(--font-mono); font-size: 0.78rem; padding: 0.1rem 0.4rem; border-radius: 3px; }
.badge-warn { background: var(--red-bg); color: var(--red); font-family: var(--font-mono); font-size: 0.78rem; padding: 0.1rem 0.4rem; border-radius: 3px; }

/* ============================================================
   TOAST
   ============================================================ */
.toast {
  position: fixed; bottom: calc(var(--bottom-nav-h) + 0.75rem); left: 50%;
  transform: translateX(-50%);
  background: #1e293b; color: #f1f5f9;
  padding: 0.65rem 1.25rem 0.65rem 1rem;
  border-radius: var(--radius);
  font-size: 0.83rem; font-weight: 500;
  box-shadow: 0 4px 20px rgba(0,0,0,0.35);
  opacity: 0; pointer-events: none; transition: opacity 0.22s ease;
  z-index: 9999; white-space: nowrap;
  border-left: 4px solid var(--green);
  display: flex; align-items: center; gap: 0.5rem;
}
.toast.show { opacity: 1; }
.toast.toast-ok  { border-left-color: #34d399; }
.toast.toast-err { background: #450a0a; color: #fecaca; border-left-color: #f87171; }

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  text-align: center; padding: 1rem;
  font-size: 0.72rem; color: var(--text-muted);
  padding-bottom: calc(var(--bottom-nav-h) + 0.5rem);
}

/* ── AutoSave-Chip ──────────────────────────────────────────── */
.autosave-status {
  font-size: .68rem; color: var(--text-muted); white-space: nowrap;
  opacity: 0; transition: opacity .4s ease;
  font-family: var(--font-mono);
}
.autosave-status.autosave-flash { opacity: 1; }

/* ============================================================
   FARBSCHEMA — Akzent-Header (Light Mode)
   bg-app bleibt IMMER neutral — nur Header + Akzent-Elemente färben
   ============================================================ */
[data-accent="orange"]  { --bg-header: #1e1208; --bg-bottom-nav: #1e1208; --bg-result: #1e1208; }
[data-accent="red"]     { --bg-header: #1e0808; --bg-bottom-nav: #1e0808; --bg-result: #1e0808; }
[data-accent="rose"]    { --bg-header: #1e0814; --bg-bottom-nav: #1e0814; --bg-result: #1e0814; }
[data-accent="violet"]  { --bg-header: #110818; --bg-bottom-nav: #110818; --bg-result: #110818; }
[data-accent="blue"]    { --bg-header: #080e1e; --bg-bottom-nav: #080e1e; --bg-result: #080e1e; }
[data-accent="teal"]    { --bg-header: #041412; --bg-bottom-nav: #041412; --bg-result: #041412; }
[data-accent="green"]   { --bg-header: #061408; --bg-bottom-nav: #061408; --bg-result: #061408; }
[data-accent="amber"]   { --bg-header: #1a1004; --bg-bottom-nav: #1a1004; --bg-result: #1a1004; }

/* ============================================================
   PRINT — Helle Darstellung, technische Auswertung klar
   ============================================================ */
@media print {
  /* Elemente ausblenden */
  .app-header, .bottom-nav, .no-print, footer,
  .tab-nav, #btnSave, #btnLoad, #btnExport, #btnNew,
  #btnTheme, #btnPalette, #palettePanel, .toast,
  #fabPrint, #btnPrint, button[onclick*="print"] { display: none !important; }

  /* ── Immer helles Design im Druck ───────────────────────── */
  body, body.dark {
    --bg-app:           #ffffff !important;
    --bg-card:          #ffffff !important;
    --bg-input:         #ffffff !important;
    --bg-table-head:    #f7f8f9 !important;
    --bg-modal:         #ffffff !important;
    --bg-modal-footer:  #f7f8f9 !important;
    --bg-result:        #1a1a2e !important;
    --bg-layer:         #ffffff !important;
    --bg-layers-header: #f7f8f9 !important;
    --border:           #dcdde4 !important;
    --border-strong:    #1a1a2e !important;
    --text-primary:     #0d0d14 !important;
    --text-secondary:   #3a3a50 !important;
    --text-muted:       #7a7a96 !important;
    --text-heading:     #1a1a2e !important;
    --green:            #16a34a !important;
    --green-bg:         #dcfce7 !important;
    --red:              #dc2626 !important;
    --red-bg:           #fee2e2 !important;
  }

  /* Nur Auswertungs-Tab sichtbar */
  .tab-panel { display: none !important; }
  #tab-auswertung { display: block !important; }

  /* Basis — ALLES auf weiß */
  *, *::before, *::after { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  html, body,
  .main-content, .tab-panel, #tab-auswertung,
  .bg-result, .bg-card, .bg-modal { background: #fff !important; color: #111 !important; }
  html { font-size: 11pt; }
  .main-content { max-width: 100%; padding: 0 !important; margin: 0 !important; }
  .modal-overlay { display: none !important; }

  /* Report-Header: hell, Akzentstreifen oben */
  .report-header {
    background: #fff !important; color: #111 !important;
    border: 1.5pt solid #ccc !important;
    border-top: 4pt solid var(--orange) !important;
    border-radius: 0 !important; padding: 12pt 14pt !important;
    margin-bottom: 14pt !important; page-break-inside: avoid;
  }
  .report-title { color: #111 !important; font-size: 14pt !important; }
  .rmi-label, .rmi-value { color: #444 !important; }

  /* Summary-Cards */
  .result-summary-grid {
    display: grid !important; grid-template-columns: repeat(4, 1fr) !important;
    gap: 6pt !important; margin-bottom: 14pt !important;
  }
  .summary-card {
    background: #fff !important; border: 1pt solid #ccc !important;
    border-top: 3pt solid var(--orange) !important;
    border-radius: 0 !important; padding: 6pt 8pt !important; break-inside: avoid;
  }
  .summary-card-label { color: #555 !important; font-size: 7pt !important; }
  .summary-card-value { color: #111 !important; font-size: 14pt !important; }
  .summary-card-unit  { color: #555 !important; }

  /* Haupt-Ergebnistabelle */
  .data-table { width: 100% !important; border-collapse: collapse !important; font-size: 8.5pt !important; }
  .data-table thead tr { background: #f0f0f0 !important; color: #111 !important; }
  .data-table th  { border: 0.5pt solid #ccc !important; padding: 4pt 5pt !important; font-weight: 700; color: #111 !important; }
  .data-table td  { border: 0.5pt solid #ccc !important; padding: 3pt 5pt !important; color: #111 !important; background: #fff !important; }
  .data-table tfoot tr { background: #f5f5f5 !important; font-weight: 700; }
  .data-table tfoot td { color: #111 !important; background: #f5f5f5 !important; }
  .row-q-warn td  { background: #fff4f4 !important; }
  .cell-q-ok      { color: #166534 !important; font-weight: 700; }
  .cell-q-warn    { color: #991b1b !important; font-weight: 700; }

  /* Aufbau-Detail-Karten */
  .construction-detail-card {
    background: #fff !important; border: 1pt solid #ccc !important;
    border-radius: 0 !important; break-inside: avoid; margin-bottom: 8pt !important;
  }
  .construction-detail-title {
    background: #f0f0f0 !important; color: #111 !important;
    border-bottom: 1pt solid #ccc !important; padding: 4pt 8pt !important; font-size: 8pt !important;
  }

  /* Sketch — weiß, zentriert, kein dunkler Kasten */
  .sketch-block {
    break-inside: avoid;
    display: block !important;
    text-align: center !important;
  }
  .sketch-block svg { max-width: 380pt !important; }
  .sketch-block svg rect:first-child { fill: #fff !important; }
  .sketch-and-table { display: block !important; }
  .sketch-table-block { margin-top: 10pt; overflow: visible !important; }

  /* Badges */
  .badge-ok   { background: #d1fae5 !important; color: #065f46 !important; border: 0.5pt solid #065f46 !important; }
  .badge-warn { background: #fee2e2 !important; color: #991b1b !important; border: 0.5pt solid #991b1b !important; }

  /* Footer ausblenden im Druck */
  footer { display: none !important; }

  /* tfoot dunkel → weiß */
  .data-table tfoot tr { background: #f5f5f5 !important; }
  .data-table tfoot td { background: #f5f5f5 !important; color: #111 !important; border-top: 1pt solid #ccc !important; }

  /* Alles mit bg-result → weiß */
  [class*="bg-result"], .bg-result { background: #fff !important; color: #111 !important; }
  .section-divider { border-color: #ccc !important; margin: 10pt 0 !important; }
  h3 { page-break-before: auto; page-break-after: avoid; color: #111 !important; }
  .table-wrapper { overflow: visible !important; }
}

/* ============================================================
   PALETTE PANEL — Farbschema
   ============================================================ */
.palette-panel {
  position: absolute;
  top: calc(var(--header-h) + 4px);
  right: 1rem;
  z-index: 3000;
  background: var(--bg-modal);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: .9rem 1rem 1rem;
  min-width: 224px;
  animation: palFadeIn .15s ease;
}
@keyframes palFadeIn { from { opacity:0; transform:translateY(-6px) } to { opacity:1; transform:translateY(0) } }

.palette-panel[hidden] { display:none; }

.palette-section-label {
  font-size: .7rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .6px; color: var(--text-muted); margin-bottom: .5rem;
}

.palette-mode-row { display: flex; gap: .5rem; }

.palette-mode-btn {
  flex: 1; display: flex; align-items: center; justify-content: center;
  gap: .4rem; padding: .45rem .6rem; border-radius: var(--radius);
  border: 1.5px solid var(--border); background: var(--bg-input);
  color: var(--text-secondary); font-size: .78rem; font-weight: 600;
  cursor: pointer; transition: var(--transition);
}
.palette-mode-btn svg { width: 15px; height: 15px; }
.palette-mode-btn:hover { border-color: var(--orange); color: var(--orange); }
.palette-mode-btn.active {
  border-color: var(--orange); background: var(--orange);
  color: #fff;
}

.palette-swatch-row {
  display: flex; flex-wrap: wrap; gap: .45rem; margin-top: .2rem;
}

.palette-swatch {
  width: 30px; height: 30px; border-radius: 50%;
  border: 2.5px solid transparent; cursor: pointer;
  transition: transform .15s ease, border-color .15s ease;
  position: relative;
}
.palette-swatch:hover { transform: scale(1.15); }
.palette-swatch.active {
  border-color: var(--text-primary);
  box-shadow: 0 0 0 2px var(--bg-modal), 0 0 0 4px var(--text-primary);
}
.palette-swatch .swatch-check {
  position: absolute; inset: 0; display: flex;
  align-items: center; justify-content: center;
  opacity: 0; transition: opacity .15s;
}
.palette-swatch.active .swatch-check { opacity: 1; }
.palette-swatch .swatch-label {
  position: absolute; bottom: -1.6rem; left: 50%; transform: translateX(-50%);
  font-size: .62rem; color: var(--text-muted); white-space: nowrap;
  pointer-events: none; opacity: 1; /* immer sichtbar */
  font-family: var(--font-main);
}
.palette-swatch-row { padding-bottom: 1.6rem; } /* Platz für Labels */

input[type="color"] {
  -webkit-appearance: none; appearance: none;
  border: 2.5px solid var(--border); border-radius: 50%;
  cursor: pointer; overflow: hidden;
}
input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
input[type="color"]::-webkit-color-swatch { border: none; border-radius: 50%; }
input[type="color"]::-moz-color-swatch { border: none; border-radius: 50%; }

/* ============================================================
   PALETTE — Akzent-Variablen
   ============================================================ */
/* Akzent-Tokens: werden per JS als data-accent gesetzt */
[data-accent="orange"]  { --orange: #e85d1a; --orange-hover: #c94e15; --accent-h: 20; }
[data-accent="red"]     { --orange: #dc2626; --orange-hover: #b91c1c; --accent-h: 0; }
[data-accent="rose"]    { --orange: #e11d74; --orange-hover: #be185d; --accent-h: 336; }
[data-accent="violet"]  { --orange: #7c3aed; --orange-hover: #6d28d9; --accent-h: 263; }
[data-accent="blue"]    { --orange: #2563eb; --orange-hover: #1d4ed8; --accent-h: 221; }
[data-accent="teal"]    { --orange: #0d9488; --orange-hover: #0f766e; --accent-h: 174; }
[data-accent="green"]   { --orange: #16a34a; --orange-hover: #15803d; --accent-h: 142; }
[data-accent="amber"]   { --orange: #d97706; --orange-hover: #b45309; --accent-h: 38; }

.kz-mode-bar {
  display: flex; gap: .5rem; margin-bottom: 1rem;
  border-bottom: 2px solid var(--border); padding-bottom: .75rem;
}
.kz-mode-btn {
  display: flex; align-items: center; gap: .4rem;
  padding: .4rem .85rem; border-radius: var(--radius);
  border: 1.5px solid var(--border); background: var(--bg-input);
  color: var(--text-secondary); font-size: .8rem; font-weight: 600;
  cursor: pointer; transition: var(--transition);
}
.kz-mode-btn svg { width: 14px; height: 14px; }
.kz-mode-btn:hover { border-color: var(--orange); color: var(--orange); }
.kz-mode-btn.active {
  background: var(--orange); border-color: var(--orange); color: #fff;
}

/* Projektmodus Flächen-Checklist */
.kzp-surface-item {
  display: flex; align-items: flex-start; gap: .6rem;
  padding: .6rem .5rem; border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
.kzp-surface-item:last-child { border-bottom: none; }
.kzp-surface-item:hover { background: var(--bg-app); }
.kzp-surface-item input[type="checkbox"] {
  margin-top: .2rem; width: 15px; height: 15px; flex-shrink: 0;
  accent-color: var(--orange); cursor: pointer;
}
.kzp-surface-info { flex: 1; min-width: 0; }
.kzp-surface-name { font-weight: 600; font-size: .82rem; color: var(--text-primary); }
.kzp-surface-meta { font-size: .73rem; color: var(--text-muted); margin-top: .15rem; line-height: 1.5; }
.kzp-surface-vals { text-align: right; font-size: .78rem; color: var(--text-secondary); white-space: nowrap; }
.kzp-surface-vals strong { display: block; font-size: .85rem; color: var(--text-primary); }

/* Aufbau-Override in der Flächen-Zeile */
.kzp-override-row {
  display: flex; align-items: center; gap: .4rem;
  margin-top: .35rem; flex-wrap: wrap;
}
.kzp-override-row select {
  font-size: .72rem; padding: .2rem .35rem; min-width: 0; flex: 1;
}

.kz-zone-row {
  display: grid;
  grid-template-columns: 80px 1fr 58px 16px;
  align-items: center; gap: .3rem .4rem;
  background: var(--bg-app); border-radius: var(--radius);
  padding: .45rem .5rem;
}
.kz-zone-bauteil { font-size:.78rem; font-weight:600; color:var(--text-secondary); }
.kz-zone-sel { font-size:.78rem; min-width:0; }
.kz-zone-temp { font-size:.78rem; text-align:right; }
.kz-zone-presets-mini {
  grid-column: 1 / -1;
  display: flex; gap: .2rem; flex-wrap: wrap; margin-top: .1rem;
}

/* ── Responsive: Zonen-Row auf 380px ─────────────────────── */
@media (max-width: 480px) {
  .kz-zone-row { grid-template-columns: 70px 1fr 52px 14px; }
  .kz-zone-presets-mini button { font-size:.65rem; padding:.12rem .3rem; }
}

/* ============================================================
   KÜHLZELLEN-KALKULATOR
   ============================================================ */
.kz-grid { display: flex; flex-direction: column; gap: 1rem; }

.kz-card {
  background: var(--bg-card); border: 1.5px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.1rem;
}

.kz-title {
  font-family: var(--font-cond); font-weight: 700; font-size: 0.85rem;
  color: var(--orange); text-transform: uppercase; letter-spacing: 0.6px;
  margin-bottom: 0.875rem;
}

.kz-temp-row {
  display: flex; align-items: center; gap: 0.4rem; flex-wrap: wrap;
  margin-top: 0.25rem;
}
.kz-presets { display: flex; gap: 0.25rem; flex-wrap: wrap; }

/* ============================================================
   RESPONSIVE — TABLET  ≤ 900px
   ============================================================ */
@media (max-width: 900px) {
  .room-dims-grid {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
  }
  .room-dims-grid .dims-arrow:first-of-type { display: none; }
  .room-dims-grid .dims-arrow:last-of-type { display: none; }
  .surface-row { grid-template-columns: 1fr 1fr 1fr; }
  .form-grid-3 { grid-template-columns: 1fr 1fr; }
  .result-summary-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
}

/* ============================================================
   RESPONSIVE — MOBILE  ≤ 640px
   ============================================================ */
@media (max-width: 1100px) {

  /* Header: compact, hide tab-nav */
  :root { --header-h: 52px; }
  .app-header { padding: 0 0.875rem; gap: 0.6rem; }
  .tab-nav { display: none; }          /* replaced by bottom nav */
  .title-sub { display: none; }
  .logo { width: 32px; height: 30px; }
  .btn-icon { width: 36px; height: 36px; }

  /* Show bottom nav */
  .bottom-nav { display: block; }
  body { padding-bottom: calc(var(--bottom-nav-h) + max(env(safe-area-inset-bottom, 0px), 8px)); }
  footer { padding-bottom: calc(var(--bottom-nav-h) + max(env(safe-area-inset-bottom, 0px), 8px) + 0.5rem); }
  .main-content { padding: 1rem 0.875rem 1.5rem; }

  /* Forms: single column */
  .form-grid-2,
  .form-grid-3 { grid-template-columns: 1fr; }
  .span-2,
  .span-3 { grid-column: span 1; }

  /* Room dims: single column stack */
  .room-dims-grid {
    grid-template-columns: 1fr;
    padding: 1rem;
  }
  .dims-arrow { display: none; }

  /* Result box: wrap tightly */
  .result-box { gap: 0.875rem; padding: 0.875rem 1rem; }
  .result-value { font-size: 1rem; }

  /* Surface row: card layout */
  .surface-row {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto auto;
    gap: 0.4rem;
  }
  .surface-row > .surface-name { grid-column: span 2; }
  .surface-row > .td-actions   { grid-column: span 2; justify-content: flex-start; }

  /* Construction cards: 1 column */
  .constructions-list { grid-template-columns: 1fr; }

  /* Layer rows: narrower */
  .layer-row {
    grid-template-columns: 1fr 80px 32px;
  }
  .deduction-row {
    grid-template-columns: 1fr 70px 46px 32px;
  }

  /* Area mode row: stack */
  .area-mode-row { flex-direction: column; align-items: stretch; }
  .area-mode-row select { min-width: unset; }

  /* Zones: single column */
  .zones-list { flex-direction: column; }
  .zone-card { width: 100%; }

  /* Summary grid */
  .result-summary-grid { grid-template-columns: 1fr 1fr; }

  /* Report header */
  .report-meta { gap: 0.75rem; }

  /* Buttons: full width in modal footer on mobile */
  .modal-footer { flex-direction: column-reverse; }
  .modal-footer .btn-primary,
  .modal-footer .btn-secondary,
  .modal-footer .btn-accent { width: 100%; text-align: center; justify-content: center; }

  /* Smaller panel headings */
  .panel-header h2,
  .panel-header-flex h2 { font-size: 1.2rem; }

  /* Toast above bottom nav */
  .toast { white-space: normal; max-width: 90vw; text-align: center; bottom: calc(var(--bottom-nav-h) + 0.75rem); }

  /* Header actions: only show most important icons, rest in overflow */
  .header-actions .btn-icon:nth-child(n+6) { display: none; }
}

/* ============================================================
   RESPONSIVE — VERY SMALL  ≤ 380px
   ============================================================ */
/* ── Mobile spezifisch ≤ 640px ────────────────────────────── */
@media (max-width: 640px) {
  /* Tabellen horizontal scrollbar statt Seitenbreak */
  .table-wrapper { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .data-table { font-size: 0.72rem; }
  .data-table th, .data-table td { padding: .3rem .4rem; }

  /* Palette-Panel: volle Breite */
  .palette-panel { right: .5rem; left: .5rem; min-width: unset; }

  /* Karten 1-Spaltig */
  .result-summary-grid { grid-template-columns: 1fr 1fr !important; }

  /* KZ Türzeile */
  .kz-door-row { grid-template-columns: 1fr 52px 52px 52px 28px !important; }
}

@media (max-width: 380px) {
  .result-summary-grid { grid-template-columns: 1fr; }
  .header-actions .btn-icon:nth-child(n+5) { display: none; }
  .bottom-tab-btn span { display: none; }  /* icon-only on tiny screens */
  .bottom-tab-btn { gap: 0; }
}