/* =====================================================================
   Calculateur Balistique — Tireur.org
   ===================================================================== */

/* --- Calculator layout --- */
.calc-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 1.5rem;
  margin-top: 1.5rem;
  align-items: start;
}

.calc-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem;
  position: sticky; top: 72px;
}

.calc-panel h3 {
  font-size: .9rem; font-weight: 700; color: var(--color-accent);
  margin-bottom: .6rem; padding-bottom: .3rem;
  border-bottom: 2px solid var(--color-accent);
}

.calc-panel h3:not(:first-child) { margin-top: 1rem; }

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .5rem .5rem;
  margin-bottom: .15rem;
}

.field {
  display: flex; flex-direction: column; margin-bottom: .4rem;
  min-width: 0; /* Prevent grid blowout */
}
.field label {
  font-size: .75rem; font-weight: 600; color: var(--color-text-light);
  margin-bottom: .15rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.unit-toggle {
    font-size: 0.65rem;
    color: var(--color-accent);
    cursor: pointer;
    text-transform: uppercase;
    font-weight: bold;
    padding: 1px 4px;
    border: 1px solid transparent;
    border-radius: 3px;
}

.unit-toggle:hover {
    border-color: var(--color-accent);
    background: var(--color-bg);
}

.help-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 13px;
    height: 13px;
    font-size: 9px;
    font-weight: bold;
    color: var(--color-text-light);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    margin-left: 5px;
    cursor: help;
    vertical-align: middle;
    position: relative;
    flex-shrink: 0;
}

.help-icon:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.help-icon::after {
    content: attr(data-help);
    position: absolute;
    bottom: 130%;
    left: 0;
    transform: translateX(5px);
    background: #141D26;
    color: #fff;
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: normal;
    width: 220px;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.2s, transform 0.2s;
    z-index: 5000; /* Extra high to be above everything */
    text-align: left;
    line-height: 1.4;
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
    white-space: normal;
    pointer-events: none;
}

.help-icon:hover::after {
    visibility: visible;
    opacity: 1;
    transform: translateX(5px) translateY(-5px);
}

/* Module d'aide dépliable */
.calc-help-box {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
}
.calc-help-box summary {
    padding: 0.6rem 1rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--color-accent);
    display: flex;
    align-items: center;
    gap: 6px;
    list-style: none;
    user-select: none;
}
.calc-help-box summary::-webkit-details-marker { display: none; }
.calc-help-box summary::after {
    content: '▸';
    margin-left: auto;
    transition: transform 0.2s;
}
.calc-help-box[open] summary::after { transform: rotate(90deg); }
.calc-help-content {
    padding: 0.75rem 1rem 1rem;
    border-top: 1px solid var(--color-border);
}
.calc-help-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
}
.calc-help-grid h4 {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-accent);
    margin: 0 0 0.4rem;
}
.calc-help-grid p, .calc-help-grid li {
    font-size: 0.85rem;
    line-height: 1.5;
    color: var(--color-text);
    margin: 0.2rem 0;
}
.calc-help-grid ul { padding-left: 1.2rem; margin: 0; }
.calc-help-grid code {
    background: var(--color-code-bg);
    padding: 1px 4px;
    border-radius: 3px;
    font-size: 0.8em;
}

/* =====================================================================
   Responsive
   ===================================================================== */
@media (max-width: 768px) {
  .calc-layout { grid-template-columns: 1fr; }
  .calc-panel { position: static; }
}