/* ProdDash shell — dark, high-contrast, production-booth friendly.
   Visual language carried over from ProdCom Listener (same variable names, so
   module CSS written against these looks native everywhere). Modules must
   style with these variables only — no hardcoded colors. */

:root {
  --bg: #0b0e12;
  --panel: #131920;
  --border: #232b35;
  --text: #e6edf3;
  --muted: #8b98a5;
  --accent: #2ee59a;
  --danger: #f4433c;
  --warn: #f0b429;
  /* grid geometry (shell.js reads these) */
  --cell-h: 72px;
  --gap: 0px; /* tiles sit flush; their 1px borders are the only seam */
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

button { font-family: inherit; }

/* ── topbar ────────────────────────────────────────────────────────── */

#topbar {
  flex: none;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  user-select: none;
  -webkit-user-select: none;
}

#brand {
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.02em;
  margin-right: 6px;
}
#brand .accent { color: var(--accent); }

#topbar .spacer { flex: 1; }

.tb-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 13px;
  cursor: pointer;
  text-decoration: none;
}
.tb-btn:hover { border-color: var(--muted); }
.tb-btn:active { background: var(--border); }

/* ── dropdown menus ────────────────────────────────────────────────── */

.dropdown { position: relative; }

.menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  z-index: 50;
  min-width: 210px;
  max-height: 70vh;
  overflow-y: auto;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 5px;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.55);
}
.menu[hidden] { display: none; }

.menu-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 10px;
  background: none;
  border: none;
  border-radius: 6px;
  color: var(--text);
  font-size: 13px;
  text-align: left;
  cursor: pointer;
  white-space: nowrap;
}
.menu-item:hover { background: var(--border); }
.menu-item .sub {
  display: block;
  color: var(--muted);
  font-size: 11px;
  margin-top: 2px;
  white-space: normal;
}
.menu-item.danger { color: var(--danger); }
.menu-note {
  padding: 8px 10px;
  color: var(--muted);
  font-size: 12px;
  white-space: normal;
}
.menu-divider { height: 1px; background: var(--border); margin: 5px 4px; }
.menu-title {
  padding: 6px 10px 3px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ── grid ──────────────────────────────────────────────────────────── */

#gridwrap {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
}

#grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-auto-rows: var(--cell-h);
  gap: var(--gap);
  /* Always leave room to drop/grow a tile below the last row. */
  padding-bottom: calc(3 * (var(--cell-h) + var(--gap)));
}

#empty-state {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 12vh;
  color: var(--muted);
  font-size: 14px;
  pointer-events: none;
}
#empty-state[hidden] { display: none; }

/* ── tiles ─────────────────────────────────────────────────────────── */

.tile {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.tile.dragging,
.tile.resizing {
  z-index: 40;
  border-color: var(--muted);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  opacity: 0.92;
}

.tile-head {
  flex: none;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 8px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border);
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}
.tile.dragging .tile-head { cursor: grabbing; }

.tile-head .dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--muted);
  transition: background 0.3s;
}
.tile-head .dot.ok { background: var(--accent); box-shadow: 0 0 5px var(--accent); }
.tile-head .dot.connecting { background: var(--warn); }
.tile-head .dot.error { background: var(--danger); }

.tile-title {
  flex: 1;
  min-width: 0;
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.03em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tile-btn {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: none;
  border: none;
  border-radius: 5px;
  color: var(--muted);
  font-size: 13px;
  cursor: pointer;
}
.tile-btn:hover { background: var(--border); color: var(--text); }
.tile-btn.close:hover { color: var(--danger); }
.tile-btn svg { width: 13px; height: 13px; display: block; }

.tile-body {
  flex: 1;
  position: relative;
  min-height: 0;
  min-width: 0;
  overflow: hidden;
}

.tile-resize {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 20px;
  height: 20px;
  cursor: nwse-resize;
  touch-action: none;
  z-index: 5;
  color: var(--muted);
  opacity: 0.6;
}
.tile-resize:hover { opacity: 1; color: var(--text); }
.tile-resize::after {
  content: "";
  position: absolute;
  right: 4px;
  bottom: 4px;
  width: 9px;
  height: 9px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  border-radius: 0 0 3px 0;
}

/* ── seam divider between adjacent tiles ───────────────────────────── */

/* When two tiles share a vertical edge, an invisible strip sits on the seam;
   hovering reveals a small macOS-split-view-style grab pill. Dragging it
   trades width between the two tiles. */
.tile-divider {
  position: absolute;
  width: 14px;
  transform: translateX(-50%);
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: col-resize;
  touch-action: none;
}

.tile-divider::after {
  content: "";
  width: 5px;
  height: 44px;
  max-height: 55%;
  border-radius: 999px;
  background: var(--muted);
  opacity: 0;
  transition: opacity 0.15s ease, background 0.15s ease;
}

.tile-divider:hover::after { opacity: 0.7; }
.tile-divider.active::after { opacity: 1; background: var(--text); }

/* Hide the pills while a tile itself is being moved or corner-resized —
   they're rebuilt for the new geometry on release. */
#grid.no-dividers .tile-divider { display: none; }

/* status message a module can show while degraded (also used by the shell
   when a module fails to load) */
.tile-msg {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 12px;
  color: var(--muted);
  font-size: 13px;
  background: var(--panel);
  z-index: 4;
}

/* ── per-tile settings popover ─────────────────────────────────────── */

.tile-settings {
  position: absolute;
  top: 30px;
  right: 6px;
  z-index: 45;
  min-width: 220px;
  max-width: calc(100% - 12px);
  max-height: calc(100% - 40px);
  overflow-y: auto;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.55);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 10px;
  font-size: 12px;
  color: var(--muted);
}
.field input[type="text"],
.field input[type="number"],
.field input[type="password"],
.field select {
  padding: 7px 9px;
  font-size: 13px;
  font-family: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 7px;
}
.field input:focus, .field select:focus {
  outline: none;
  border-color: var(--accent);
}
.field.check {
  flex-direction: row;
  align-items: center;
  gap: 8px;
  color: var(--text);
  cursor: pointer;
}
.field.check input { width: 15px; height: 15px; accent-color: var(--accent); }

/* ── modal dialogs (layout name prompt etc.) ───────────────────────── */

#modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(4, 6, 8, 0.65);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 18vh;
}
#modal-backdrop[hidden] { display: none; }

#modal {
  width: min(360px, calc(100vw - 32px));
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
}
#modal h2 { font-size: 14px; margin-bottom: 12px; }
#modal .actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 4px;
}

.btn {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 13px;
  cursor: pointer;
}
.btn:hover { border-color: var(--muted); }
.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #06281a;
  font-weight: 600;
}

/* toast */
#toast {
  position: fixed;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 95;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 13px;
  border-radius: 999px;
  padding: 8px 16px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
  transition: opacity 0.25s ease;
}
#toast[hidden] { display: none; }
#toast.error { border-color: var(--danger); }

/* ── scrollbars ────────────────────────────────────────────────────── */

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 999px;
  border: 2px solid transparent; /* inset gutter */
  background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover {
  background: #364253;
  background-clip: padding-box;
}
::-webkit-scrollbar-corner { background: transparent; }

/* Firefox (webkit pseudo-elements unsupported there) */
@supports (-moz-appearance: none) {
  * { scrollbar-width: thin; scrollbar-color: var(--border) transparent; }
}

@media (max-width: 560px) {
  #topbar { padding: 6px 8px; flex-wrap: wrap; }
}