:root {
    --margin-bottom: 10px;
    --header-height: 60px;
    --header-color: #371d77;
    --footer-color: #c6b246;
    --correct-answer-color: #0d5a2b;
}


html {
    font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  position: relative;
  
}

html, body {
    height: calc(100% - var(--margin-bottom) - var(--header-height));
}

body {
  margin-bottom: var(--margin-bottom); 
  background-color: #fefecc;
}

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

.container {
    flex-wrap: wrap;
    justify-content: center;
    border: 1px solid #ddd;
    height: auto;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    max-width: 100%;
    padding: 0px !important;
    
}

.container-fluid {
    padding: 0px !important;
    height: 100%;
}

.main {
    width: 95%;
    max-width: 95%;
    margin: 0 auto;
    padding: 0px;
    
}

.innercontainer {
  margin-top: 0px;
    padding: 0px;
    display: flex; /* was inline-flex */
    flex-wrap: wrap;
    justify-content: center;
 align-items: stretch; /* ensure children stretch to same height */
    gap: 2%;
    border: 1px solid #ddd;
    width: 100%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    height: 100%;
}

.halfcontainer {
    flex: 0 0 48%;
    display: flex;
    flex-direction: column;
    background-color: #ffffff;
    box-sizing: border-box;
}

/* keep nested innercontainer behavior (used inside halves) but allow it to wrap content */
.halfcontainer .innercontainer {
 display: flex;
 flex-wrap: wrap;
 justify-content: center;
 gap: 2%;
 border: none; /* avoid double border inside halves */
}

/* Make right/left containers explicitly stretch and allow content to grow */
#rightcontainer, #leftcontainer {
 align-items: stretch;
}

/* Прив'язати реальну висоту header до змінної і вирівняти вміст по центру */
header {
    height: var(--header-height);
    background-color: var(--header-color);
}

header .navbar {
  height: 100%;
  padding-top: 0;
  padding-bottom: 0;

}

/* Вертикальне центровання бренда та навігації */
    header .navbar-brand,
    header .navbar-nav {
        height: 100%;
      display: flex;
 align-items: center;
   background-color: var(--header-color);
    }

.navbar-coloured {
    background-color: var(--header-color);
}

footer {
    background-color: var(--footer-color);
}

/* Responsive: on narrow screens stack columns and ensure rightcontainer is above leftcontainer */
@media (max-width: 768px) {
  /* Make the parent a normal flex column so children stack vertically */
  .innercontainer:not(#recognisebox) {
    display: flex !important;
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
  }

  /* Each half becomes full width when stacked */
  .halfcontainer {
    width: 100% !important;
    flex: 0 0 auto;
}

  /* Ensure rightcontainer is rendered above leftcontainer even if markup/order changes */
  #rightcontainer {
    order: -1;
  }

  /* Optional: tighten borders/padding on small screens */
  .innercontainer:not(#recognisebox), .halfcontainer {
    border-width: 1px;
    padding: 0.5rem;
  }
}

/* Стала ширина селектів для консистентного UI */
.select-quality {
    width: 320px;
    max-width: 100%;
}

.select-chord {
    width: 240px;
    max-width: 100%;
}

.select-root {
    width: 80px;
    max-width: 100%;
}

/* Стилізація для правильної відповіді - весь блок темно-зеленим */
.answer-correct {
    color: var(--correct-answer-color);
 font-weight: 600;
}

.answer-correct p,
.answer-correct code {
    color: var(--correct-answer-color);
}

/* utility to force an element to take full width inside flex/flex-wrap containers */
.full-row {
    display: block;
    width: 100%;
}

/* ensure the play button is centered within the full row */
#playform { text-align: center; margin-bottom:0.5rem; }
#playform button { min-width:160px; }

/* Make success/danger messages bold for better visibility */
.text-success { font-weight:700; }
.text-danger { font-weight:700; }

.whitecontainer {
    background-color: #ffffff;
    padding: 15px;
    border: 1px solid #ddd;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    border-radius: 5px;
}

/* stronger specificity in case other rules override .whitecontainer */
main .whitecontainer {
    background-color: #ffffff;
    padding: 15px;
    border: 1px solid #ddd;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    border-radius: 5px;
}