html, body { height: 100%; overflow: hidden; }
body { display: flex; flex-direction: column; }

.greda5-page-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.55rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--navy-800);
  flex-shrink: 0;
}
.greda5-ph-left  { display: flex; align-items: center; gap: 0.75rem; }
.greda5-ph-right { display: flex; align-items: center; gap: 0.75rem; }
.greda5-ph-center {
  flex: 1; display: flex; align-items: center; gap: 0.5rem;
  padding: 0 2rem; min-width: 0;
}
.greda5-ph-center label {
  font-size: 0.78rem; color: var(--text-dim); font-family: var(--font-mono);
  white-space: nowrap; flex-shrink: 0;
}
.greda5-ph-center input {
  flex: 1; min-width: 0;
  background: transparent; border: none; border-bottom: 1px solid var(--border);
  color: var(--text); font-size: 0.85rem; font-family: var(--font-mono);
  padding: 0.1rem 0.25rem; outline: none; transition: border-color 0.15s;
}
.greda5-ph-center input:focus { border-bottom-color: var(--accent); }

@media (max-width: 900px) {
  html, body { height: auto; overflow-x: hidden; overflow-y: auto; }
  body { display: block; }
  .greda5-title-text { display: none; }
}

@media (max-width: 768px) {
  .greda5-page-header {
    display: grid;
    grid-template-areas: "left right" "center center";
    grid-template-columns: auto 1fr;
    align-items: center;
    padding: 0.4rem 0.75rem;
    gap: 0.3rem 0.5rem;
  }
  .greda5-ph-left   { grid-area: left;  gap: 0.5rem; }
  .greda5-ph-right  { grid-area: right; justify-self: end; gap: 0.25rem !important; }
  .greda5-ph-center {
    grid-area: center; flex: unset;
    padding: 0.2rem 0 0; border-top: 1px solid var(--border);
  }
}
/* Požar: 6-col tablica → 3-col (svaki par ide u vlastiti red) na uskim ekranima */
@media (max-width: 480px) {
  #tbl-fire thead { display: none; }
  #tbl-fire tr    { display: grid; grid-template-columns: 1fr 1.4fr 0.8fr; }
  #tbl-fire td    { font-size: 0.71rem; padding: 0.2rem 0.3rem; }
  #tbl-fire td[colspan="6"] { grid-column: 1 / -1; }
  #tbl-fire td[colspan="3"] { grid-column: 1 / -1; }
}

/* ULS/SLS tablica + result strip — manji font na uskim ekranima */
@media (max-width: 640px) {
  .result-table { font-size: 0.72rem; }
  .result-table th { font-size: 0.68rem; padding: 0.2rem 0.3rem; }
  .result-table td { padding: 0.2rem 0.3rem; }
  .result-cell { padding: 0.2rem 0.25rem; }
  .result-cell .rc-val { font-size: 0.78rem; }
  .result-cell .rc-label { font-size: 0.60rem; }
}
@media (max-width: 480px) {
  .result-table { font-size: 0.63rem; }
  .result-table th { font-size: 0.60rem; padding: 0.15rem 0.2rem; }
  .result-table td { padding: 0.15rem 0.2rem; }
  .result-cell { padding: 0.15rem 0.15rem; }
  .result-cell .rc-val { font-size: 0.70rem; }
  .result-cell .rc-label { font-size: 0.55rem; }
  .result-strip { gap: 0; }
}

/* Mat info box */
.mat-info-box {
  background: var(--navy-700, #0d2137);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 0.4rem 0.55rem; margin-top: 0.35rem;
  font-family: var(--font-mono); font-size: 0.76rem;
  display: grid; grid-template-columns: auto 1fr auto 1fr;
  column-gap: 0.3rem; row-gap: 0.1rem;
}
.mat-info-box .mi-l { color: var(--text-dim); white-space: nowrap; }
.mat-info-box .mi-v { color: var(--text); text-align: right; }
.mat-info-box .mi-l:nth-child(4n+3) {
  border-left: 1px solid var(--border); padding-left: 0.4rem; margin-left: 0.1rem;
}

/* Drawings row: 4 columns — iskoristivost panel uži */
.drawings-row { grid-template-columns: 1fr 1.3fr 1.2fr 0.75fr; }

/* Result strip */
.result-strip {
  display: grid; grid-template-columns: repeat(6, 1fr);
  gap: 0; border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

/* Drawings row fixed height */
.drawings-row { flex: 0 0 auto; }
.tab-content {
  flex: 1; min-height: 0; overflow-y: auto; max-height: none;
  scrollbar-width: none;
}
.tab-content::-webkit-scrollbar { display: none; }
.tab-content.active {
  flex-shrink: 1; flex-direction: column;
}

.check-ok  { color: #43a047; font-weight: 600; }
.check-err { color: #e53935; font-weight: 600; }

/* Wider left panel — identično EC3 nosac */
@media (min-width: 901px) {
  .module-layout-2col { grid-template-columns: 390px 1fr; }
}

/* Mode toggle */
.mode-toggle { display:flex; gap:2px; margin-bottom:0.55rem; }
.mode-btn {
  flex:1; padding:0.3rem 0.5rem; font-size:0.78rem; cursor:pointer;
  background:var(--navy-900); border:1px solid var(--border);
  color:var(--text-dim); border-radius:var(--radius-sm);
  font-family:var(--font-mono); transition:background 0.15s, color 0.15s;
}
.mode-btn.active { background:var(--blueprint); color:#fff; border-color:var(--blueprint); }

/* form-row-2col select */
.form-row-2col select {
  width: 100%; box-sizing: border-box;
  padding: 0.4rem 0.45rem;
  background: var(--navy-900); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text);
  font-family: var(--font-mono); font-size: 0.88rem; cursor: pointer;
}
.form-row-2col select:focus { outline: none; border-color: var(--blueprint); }