/* SPDX-License-Identifier: Apache-2.0 */
/* Antenna guide pages (antennas-hf.html, antennas-vhf.html), see antennas.js. */

.ant-cards {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 10px;
  margin: 10px 0 0;
  padding: 0;
}
.ant-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px;
  border: 1px solid var(--line);
  background: var(--panel);
  font-size: 13px;
  line-height: 1.5;
  color: var(--body);
}
.page-panel .ant-card h3 { margin: 0; color: var(--fg); font-size: 15px; font-weight: 400; }
.page-panel .ant-card p { margin: 0; }
.ant-card b { color: var(--fg); font-weight: 400; }
.ant-use {
  align-self: flex-start;
  margin-top: auto;
  background: none;
  border: 1px solid var(--line);
  color: var(--dim);
  font: 12px var(--font-mono);
  padding: 4px 8px;
  cursor: pointer;
}
.ant-use:hover { color: var(--orange); border-color: var(--orange); }

/* Diagram: wire parts, current flowing along the antenna, waves leaving it. */
.ant-svg { display: block; width: 100%; height: auto; max-height: 160px; background: #050508; border: 1px solid var(--line); }
.ant-ground { stroke: var(--line); stroke-width: 1; }
.ant-mast, .ant-radial { fill: none; stroke: var(--dim); stroke-width: 1.5; }
.ant-radial { stroke-dasharray: 3 2; }
.ant-cp { fill: none; stroke: var(--dim); stroke-width: 1.5; stroke-dasharray: 4 3; }
.ant-box { fill: #11111a; stroke: var(--dim); stroke-width: 1.2; }
.ant-el { fill: none; stroke: var(--accent); stroke-width: 2.5; stroke-linecap: round; }
.ant-current {
  fill: none;
  stroke: var(--orange);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-dasharray: 3 14;
  animation: ant-flow 1.2s linear infinite;
}
.ant-wave {
  fill: none;
  stroke: #39ff14;
  stroke-width: 1;
  opacity: 0;
  transform-box: fill-box;
  transform-origin: center;
  animation: ant-wave 3s ease-out infinite;
  animation-delay: calc(var(--i) * -1s);
}
.ant-wave.is-dir { transform-origin: left center; }
.ant-label { fill: var(--fg); font: 10px var(--font-mono); }
@keyframes ant-flow { to { stroke-dashoffset: -34; } }
@keyframes ant-wave {
  0% { transform: scale(0.1); opacity: 0.9; }
  100% { transform: scale(1); opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .ant-current { animation: none; }
  .ant-wave { animation: none; opacity: 0.35; transform: scale(calc(0.35 + var(--i) * 0.3)); }
}

/* Calculator */
.ant-calc {
  margin-top: 10px;
  padding: 12px;
  border: 1px solid var(--line);
  background: var(--panel);
  font-size: 13px;
}
.ant-types { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.ant-types label, .ant-cut button {
  position: relative;
  padding: 4px 8px;
  border: 1px solid var(--line);
  background: #050508;
  color: var(--dim);
  font: 12px var(--font-mono);
  cursor: pointer;
}
.ant-types input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; pointer-events: none; }
.ant-types label:has(input:checked) { color: var(--orange); border-color: var(--orange); }
.ant-types label:has(input:focus-visible) { outline: 1px solid var(--accent); }
.ant-cut button:hover, .ant-types label:hover { color: var(--fg); }
.ant-calc-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}
@media (max-width: 720px) {
  .ant-calc-body { grid-template-columns: minmax(0, 1fr); }
}
.ant-var {
  display: grid;
  grid-template-columns: 8.5em minmax(0, 1fr) 6em;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  color: var(--dim);
}
.ant-var input { width: 100%; min-width: 0; accent-color: var(--accent); }
.ant-var output { color: var(--orange); text-align: right; white-space: nowrap; }
.ant-cut { display: flex; flex-wrap: wrap; gap: 4px; align-items: center; color: var(--dim); }
.ant-cut > span { margin-right: 4px; }
.ant-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 8px;
  margin: 12px 0 0;
}
.ant-facts div { border-left: 2px solid var(--line); padding-left: 8px; }
.ant-facts dt { color: var(--dim); font-size: 11px; }
.ant-facts dd { margin: 0; min-height: calc(2 * 1.5em); line-height: 1.5; color: var(--fg); } /* room for a value that wraps (#173) */
.ant-bands {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 6px;
  margin: 12px 0 0;
  padding: 0;
}
.ant-bands li {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 8px;
  padding: 6px 8px;
  border: 1px solid var(--line);
  background: #050508;
}
.ant-bands b { color: var(--fg); font-weight: 400; }
.ant-bands span { justify-self: end; font-size: 11px; }
.ant-bands small {
  /* Fixed 3-line note so the calculator keeps one height while sliders move (#173). */
  grid-column: 1 / -1;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  height: calc(3 * 1.4em);
  overflow: hidden;
  color: var(--dim);
  font-size: 11px;
  line-height: 1.4;
}
.ant-bands .is-good { border-color: #39ff14; }
.ant-bands .is-good span { color: #39ff14; }
.ant-bands .is-ok { border-color: #ffd60a; }
.ant-bands .is-ok span { color: #ffd60a; }
.ant-bands .is-no { opacity: 0.55; }
.ant-search {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  color: var(--dim);
}
.ant-search code {
  /* One line with an ellipsis; copy and the title keep the full term (#173). */
  flex: 1 1 14em;
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  color: var(--fg);
}
.ant-search a { color: var(--accent); }
.ant-search .copy-btn { position: static; }
.page-panel .ant-cards, .page-panel .ant-bands { margin-left: 0; padding-left: 0; }