/* ─────────────────────────────────────────────────────────────────────────
   MeshCore Tools v3 — Layout
   App shell, topbar, bottom nav, tool panels, responsive
   ───────────────────────────────────────────────────────────────────────── */

/* ── App shell ── */
#app {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  width: 100vw;
  overflow: hidden;
  position: relative;
  /* iOS safe area at top */
  padding-top: var(--safe-top);
}

/* ── Topbar ── */
.topbar {
  height: var(--topbar-h);
  flex-shrink: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: var(--sp-2);
  z-index: 50;
  /* Prevent content going behind iOS notch */
  padding-left: max(12px, var(--safe-left));
  padding-right: max(12px, var(--safe-right));
}

.topbar-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Tool container ── */
.tool-container {
  flex: 1;
  overflow: hidden;
  position: relative;
}

/* Individual tool panels */
.tool-panel {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg);
}
.tool-panel.active {
  display: flex;
}

/* Desktop layout for map+panel tools */
.tool-body {
  flex: 1;
  display: flex;
  overflow: hidden;
}

/* ── Bottom nav ── */
.bottom-nav {
  flex-shrink: 0;
  background: var(--bg);
  border-top: 1px solid var(--border);
  display: flex;
  /* iOS home bar */
  padding-bottom: var(--safe-bottom);
}

.nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 6px 4px 8px;
  text-decoration: none;
  color: var(--muted);
  font-size: 9px;
  font-family: var(--font);
  font-weight: 500;
  cursor: pointer;
  border: none;
  background: none;
  position: relative;
  transition: color 0.15s;
  min-height: var(--touch);
}

.nav-item.active { color: var(--blue); }
.nav-item:hover { color: var(--text); }

.nav-item .ni {
  font-size: 18px;
  line-height: 1;
}

/* Pro badge on nav item */
.nav-item .pro-dot {
  position: absolute;
  top: 4px;
  right: calc(50% - 14px);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--amber);
}

/* ── Side panel (planner, coverage filters) ── */
.side-panel {
  width: 340px;
  flex-shrink: 0;
  background: var(--bg2);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 10;
  transition: width 0.25s ease;
  position: relative;
}

.side-panel.hidden { width: 0; }

.panel-scroll {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 14px;
  -webkit-overflow-scrolling: touch;
}

/* Resizer handle */
.resizer {
  width: 5px;
  flex-shrink: 0;
  background: var(--border);
  cursor: col-resize;
  z-index: 20;
  transition: background 0.15s;
}
.resizer:hover,
.resizer.dragging { background: var(--blue); }

/* ── Map container ── */
.map-wrap {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: var(--bg3);
}

/* ── Overlay toolbar (coverage map) ── */
.toolbar {
  position: absolute;
  top: 8px;
  left: 8px;
  right: 8px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  z-index: 20;
  box-shadow: var(--shadow);
  transition: transform 0.2s, opacity 0.2s;
}

.toolbar.collapsed {
  transform: translateY(-120%);
  opacity: 0;
  pointer-events: none;
}

.collapse-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 21;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--muted);
  font-size: 10px;
  font-family: var(--font);
  padding: 4px 10px;
  cursor: pointer;
  transition: all 0.15s;
}
.collapse-btn:hover { color: var(--text); border-color: var(--border2); }

/* ── Desktop overrides ── */
@media (min-width: 768px) {
  .bottom-nav { display: none; }
  .topbar { padding: 0 16px; }

  /* Desktop tool nav in topbar */
  .topbar-tool-nav {
    display: flex;
    align-items: center;
    gap: 2px;
    margin: 0 8px;
  }
  .topbar-tool-btn {
    padding: 5px 12px;
    border-radius: 7px;
    border: none;
    background: none;
    color: var(--muted);
    font-size: 12px;
    font-weight: 600;
    font-family: var(--font);
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    white-space: nowrap;
  }
  .topbar-tool-btn:hover {
    background: var(--bg3);
    color: var(--text);
  }
  .topbar-tool-btn.active {
    background: rgba(77,158,255,0.1);
    color: var(--blue);
  }

  /* Side panel full height on desktop */
  .side-panel {
    border-left: 1px solid var(--border);
  }
}

/* ── Mobile overrides ── */
@media (max-width: 767px) {
  .topbar-tool-nav { display: none; }
  /* Planner/coverage: panel below map */
  .tool-body {
    flex-direction: column;
  }

  .tool-body .map-wrap {
    flex: none;
    height: 42vh;
    min-height: 200px;
  }

  .tool-body .side-panel {
    width: 100% !important;
    border-left: none;
    border-top: 1px solid var(--border);
    flex: 1;
    max-height: none;
    overflow-y: auto;
  }

  .tool-body .resizer {
    display: none;
  }
}

/* ── Leaflet overrides ── */
.leaflet-control-zoom {
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-sm) !important;
  overflow: hidden;
  box-shadow: none !important;
}
.leaflet-control-zoom a {
  background: var(--bg2) !important;
  color: var(--muted) !important;
  border-bottom: 1px solid var(--border) !important;
  width: 32px !important;
  height: 32px !important;
  line-height: 32px !important;
  font-size: 16px !important;
}
.leaflet-control-zoom a:hover {
  background: var(--bg3) !important;
  color: var(--text) !important;
}
.leaflet-popup-content-wrapper {
  background: var(--bg2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}
.leaflet-popup-tip { background: var(--bg2); }
body.light .leaflet-tile { filter: brightness(0.9) contrast(1.1); }

/* ── Ping / Trace two-column layout ── */
.body-desktop {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.left-col {
  width: 280px;
  flex-shrink: 0;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.left-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  -webkit-overflow-scrolling: touch;
}

.right-col {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

@media (max-width: 767px) {
  .body-desktop {
    flex-direction: column;
  }
  .left-col {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border);
    height: 44vh;
    max-height: 44vh;
    flex-shrink: 0;
  }
  .right-col {
    flex: 1;
    min-height: 0;
  }
}