/* =========================================================================
   Pacewave — PTP / PMP mmWave Radio page (ptp_pmp.html)
   Loaded after styles.css and core-network.css (shared solution-page
   pieces: .cn-section, .cn-stats, .cn-table, .cn-related, tokens).
   New classes are prefixed pm-.
   ========================================================================= */

.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.pm-page {
  --pm-s1: #14a3b8;   /* series 1: E-1G  (validated pair, same as core-network chart) */
  --pm-s2: #5b7cf0;   /* series 2: E-20G */
}

/* ── Hero ───────────────────────────────────────────────────────────────── */
.pm-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  gap: 1.5rem 2.5rem;
  align-items: center;
}
.pm-hero .cn-stats, .pm-hero .cn-back { grid-column: 1 / -1; }
.pm-hero .cn-stats { margin-top: .5rem; }
.pm-hero .cn-back { margin-top: 0; justify-self: start; }
.pm-hero-cta { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.5rem; }

.pm-photo {
  margin: 0;
  padding: 1.5rem 1.5rem .9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(60% 55% at 50% 45%, rgba(20,163,184,.22), transparent 70%),
    linear-gradient(180deg, var(--bg-2), var(--bg-1));
  text-align: center;
}
.pm-photo img { width: 100%; max-width: 340px; height: auto; margin: 0 auto; filter: drop-shadow(0 24px 30px rgba(0,0,0,.45)); }
.pm-photo figcaption { margin-top: .6rem; font-size: .74rem; font-style: italic; color: var(--text-muted); }

.pm-kicker { font-weight: 600; color: var(--e2e-teal); font-size: 1.05rem; margin-bottom: 1.25rem; }
.pm-h3 { font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; margin: 2.25rem 0 1rem; }

/* six feature cards: 3 + 3 on desktop rather than 4 + 2 */
.pm-grid3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* ── Bulleted cards (Why mmWave, multiband benefits) ────────────────────── */
.pm-why-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }
.pm-why-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 1.25rem; }
.pm-why {
  padding: 1.3rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--bg-2), var(--bg-1));
}
.pm-why-head { display: flex; align-items: center; gap: .75rem; margin-bottom: 1rem; }
.pm-why-head h3 { font-family: var(--font-display); font-size: 1.05rem; font-weight: 600; line-height: 1.25; }
.pm-ico {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--gradient);
  color: #fff;
}
.pm-ico .material-icons-outlined { font-size: 21px; }
.pm-list { display: flex; flex-direction: column; gap: .55rem; }
.pm-list li { position: relative; padding-left: 1.1rem; font-size: .92rem; color: var(--text); }
.pm-list li::before {
  content: '';
  position: absolute;
  left: 0; top: .55em;
  width: 6px; height: 6px;
  border-radius: 1px;
  background: var(--e2e-teal);
}

/* ── Tables ─────────────────────────────────────────────────────────────── */
.pm-table td { color: var(--text); }
.pm-table td:last-child { font-family: var(--font-body); font-size: .93rem; color: var(--text); white-space: normal; }
.pm-table thead th:not(:first-child) { color: var(--e2e-teal); }
.pm-bands th[scope="row"] { width: 180px; }
.pm-cmp { font-size: .88rem; }
.pm-cmp td:last-child { font-size: .88rem; }
.pm-cmp th, .pm-cmp td { padding: .75rem .9rem; }

.pm-which { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.pm-which-card {
  padding: 1.2rem 1.3rem;
  border: 1px solid var(--border);
  border-left: 3px solid var(--e2e-teal);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--bg-2), var(--bg-1));
}
.pm-which-card p { margin-top: .6rem; font-size: .93rem; color: var(--text-muted); }
.pm-chip {
  display: inline-block;
  padding: .2rem .7rem;
  font-size: .78rem;
  font-weight: 600;
  color: var(--e2e-teal);
  border: 1px solid rgba(20,163,184,.5);
  border-radius: 999px;
  background: var(--e2e-teal-soft);
}

/* ── Model cards ────────────────────────────────────────────────────────── */
.pm-models { display: grid; gap: 1rem; }
.pm-models--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.pm-models--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.pm-model {
  display: flex;
  flex-direction: column;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--bg-2), var(--bg-1));
  transition: border-color var(--t-med), transform var(--t-med) var(--ease);
}
.pm-model:hover { border-color: rgba(20,163,184,.55); transform: translateY(-2px); }
.pm-model-fig {
  display: grid;
  place-items: center;
  height: 190px;
  margin-bottom: 1rem;
  border-radius: 12px;
  background: radial-gradient(55% 60% at 50% 50%, rgba(20,163,184,.16), transparent 72%);
}
.pm-model-fig img { width: auto; max-width: 70%; max-height: 165px; height: auto; filter: drop-shadow(0 16px 20px rgba(0,0,0,.4)); }
.pm-model h4 { font-family: var(--font-display); font-size: 1.1rem; font-weight: 600; color: var(--e2e-teal); }
.pm-model-tag { margin: .25rem 0 .9rem; font-size: .86rem; font-style: italic; color: var(--text-muted); }

/* ── Link range chart ───────────────────────────────────────────────────── */
.pm-range { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 1rem; align-items: stretch; }
.pm-chart {
  margin: 0;
  padding: 1.4rem 1.5rem 1.2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--bg-2), var(--bg-1));
}
.pm-chart-title { font-weight: 600; font-size: .98rem; }
.pm-legend { display: flex; flex-wrap: wrap; gap: .4rem 1.25rem; margin: .5rem 0 1.25rem; font-size: .84rem; color: var(--text-muted); }
.pm-legend span { display: inline-flex; align-items: center; gap: .45rem; }
.pm-legend i { width: 12px; height: 12px; border-radius: 3px; }
.pm-legend i.pm-s1 { background: var(--pm-s1); }
.pm-legend i.pm-s2 { background: var(--pm-s2); }

.pm-range-plot { display: flex; flex-direction: column; gap: 1.1rem; }
.pm-range-row, .pm-axis { display: grid; grid-template-columns: 110px minmax(0, 1fr); gap: .9rem; align-items: center; }
.pm-range-l { font-size: .86rem; color: var(--text); }
.pm-range-bars {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding-right: 3.6rem;           /* room for the value label after the longest bar */
}
.pm-bar { position: relative; display: flex; align-items: center; height: 18px; }
.pm-bar-fill { width: var(--w); height: 100%; border-radius: 0 4px 4px 0; }
.pm-s1 .pm-bar-fill { background: var(--pm-s1); }
.pm-s2 .pm-bar-fill { background: var(--pm-s2); }
.pm-bar-v { margin-left: .45rem; font-family: var(--font-mono); font-size: .76rem; color: var(--text); white-space: nowrap; }
.pm-ticks { position: relative; height: 1.1rem; margin-right: 3.6rem; border-top: 1px solid var(--e2e-line); }
.pm-ticks span {
  position: absolute;
  left: var(--x);
  top: .25rem;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--text-muted);
}

.pm-callouts { display: grid; grid-template-rows: repeat(3, auto); gap: 1rem; }
.pm-callout {
  padding: 1.1rem 1.3rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--bg-2), var(--bg-1));
}
.pm-callout p { margin-top: .3rem; font-size: .88rem; color: var(--text-muted); }

/* ── Multiband backup diagram ───────────────────────────────────────────── */
.pm-mb-fig { padding: 1.5rem; }
.pm-mb {
  display: grid;
  grid-template-columns: minmax(130px, 190px) minmax(0, 1fr) minmax(130px, 190px);
  align-items: stretch;
}
.pm-site {
  display: flex;
  flex-direction: column;
  gap: .6rem;
  padding: .75rem;
  border: 1.5px solid var(--e2e-teal);
  border-radius: 14px;
  background: var(--e2e-panel);
}
.pm-site-l { font-size: .8rem; font-weight: 700; color: var(--e2e-teal); text-align: center; }
.pm-rad {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .6rem .7rem;
  font-size: .84rem;
  border-radius: 8px;
  background: var(--e2e-cell);
}
.pm-rad .material-icons-outlined { font-size: 20px; color: var(--e2e-teal); }
.pm-rad--mm { background: var(--e2e-teal); color: #fff; font-weight: 600; }
.pm-rad--mm .material-icons-outlined { color: #fff; }
.pm-rad--bk { margin-top: auto; }

.pm-links { display: flex; flex-direction: column; justify-content: space-between; gap: .75rem; padding: 2rem 0 0; }
.pm-link { display: flex; flex-direction: column; align-items: center; gap: .35rem; }
.pm-link em { font-style: normal; font-size: .8rem; font-weight: 600; text-align: center; padding: 0 .75rem; }
.pm-link--primary em { color: var(--e2e-teal); }
.pm-link--backup em { order: 2; color: var(--text-muted); font-weight: 500; }
.pm-line { position: relative; display: block; width: 100%; height: 12px; }
.pm-line::before { content: ''; position: absolute; left: 0; right: 0; top: 50%; transform: translateY(-50%); }
.pm-link--primary .pm-line::before { height: 4px; background: var(--e2e-teal); border-radius: 2px; }
.pm-link--backup .pm-line::before { height: 2px; background: repeating-linear-gradient(90deg, var(--text-muted) 0 6px, transparent 6px 11px); }
.pm-switch {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: .45rem;
  margin: 0 auto;
  max-width: 460px;
  padding: 0 .75rem;
  font-size: .84rem;
  text-align: left;
  color: var(--text-muted);
}
.pm-switch .material-icons-outlined { font-size: 20px; color: var(--e2e-teal); }

/* ── Tablet ─────────────────────────────────────────────────────────────── */
@media (max-width: 1000px) {
  .pm-hero { grid-template-columns: minmax(0, 1fr); }
  .pm-photo { max-width: 460px; }
  .pm-why-grid, .pm-grid3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pm-why-grid--3 { grid-template-columns: minmax(0, 1fr); }
  .pm-models--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pm-range { grid-template-columns: minmax(0, 1fr); }
  .pm-callouts { grid-template-rows: none; grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* ── Phone ──────────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .pm-hero-cta { flex-direction: column; }
  .pm-hero-cta .btn { width: 100%; }
  .pm-why-grid, .pm-grid3, .pm-which, .pm-models--2, .pm-models--3, .pm-callouts { grid-template-columns: minmax(0, 1fr); }
  .pm-model-fig { height: 170px; }
  .pm-chart { padding: 1.1rem; }
  .pm-range-row, .pm-axis { grid-template-columns: minmax(0, 1fr); gap: .35rem; }
  .pm-axis .pm-range-l { display: none; }

  /* tables → one card per row; each value carries its column label */
  .pm-table thead { display: none; }
  .pm-table tr { display: block; padding: .85rem 1rem; border-bottom: 1px solid var(--border); }
  .pm-table tbody tr:last-child { border-bottom: 0; }
  .pm-table th, .pm-table td { display: block; width: auto !important; padding: 0; border: 0; white-space: normal; }
  .pm-table th { margin-bottom: .35rem; }
  .pm-table td { margin-top: .35rem; font-size: .9rem; }
  .pm-table td::before {
    content: attr(data-label);
    display: block;
    font-size: .72rem;
    font-weight: 600;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--e2e-teal);
  }
  /* model comparison: label and value on one line (beats .cn-table:not(...) td { display: block }) */
  .pm-page .cn-table.pm-cmp td { display: grid; grid-template-columns: 4.5rem minmax(0, 1fr); gap: .75rem; margin-top: .3rem; }
  .pm-page .cn-table.pm-cmp td::before { letter-spacing: .04em; align-self: center; }

  /* multiband diagram: sites stack top and bottom, links run vertically between them */
  .pm-mb-fig { padding: 1rem; }
  .pm-mb { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .pm-site { flex-direction: row; flex-wrap: wrap; justify-content: center; }
  .pm-site-l { flex-basis: 100%; }
  .pm-rad { flex: 1 1 120px; justify-content: center; margin-top: 0; }
  .pm-links { padding: .5rem 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .5rem .75rem; }
  .pm-switch { grid-column: 1 / -1; grid-row: 2; padding: 0; }
  .pm-link { flex-direction: row; align-items: stretch; gap: .5rem; min-height: 96px; }
  .pm-link em { order: 2; flex: 1; align-self: center; padding: 0; text-align: left; font-size: .76rem; }
  .pm-line { order: 1; width: 12px; height: auto; flex-shrink: 0; }
  .pm-line::before { left: 50%; right: auto; top: 0; bottom: 0; transform: translateX(-50%); }
  .pm-link--primary .pm-line::before { width: 4px; height: auto; }
  .pm-link--backup .pm-line::before { width: 2px; height: auto; background: repeating-linear-gradient(180deg, var(--text-muted) 0 6px, transparent 6px 11px); }
}