/* Copyright (c) 2025-2026 Ioannis Belesiotis. All rights reserved.
   This source code is proprietary and confidential. */
/* ── Proposal Preview — Two-Lane Overlay ─────────────────────────────────── */

.pp-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pp-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(30, 34, 60, 0.50);
  -webkit-backdrop-filter: blur(3px); backdrop-filter: blur(3px);
}

.pp-panel {
  position: relative;
  z-index: 1;
  width: 94vw;
  max-width: 1500px;
  height: 88vh;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ── Header ──────────────────────────────────────────────────────────────── */

.pp-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.pp-title { font-size: var(--font-lg); font-weight: 600; color: var(--color-text); }
.pp-subtitle { font-size: var(--font-xs); color: var(--color-text-muted); margin-top: 2px; }
.pp-proposal-id { font-size: 11px; color: var(--color-text-muted); margin-top: 4px; }
.pp-proposal-id code { font-weight: 600; background: var(--color-surface-alt); padding: 1px 4px; border-radius: 3px; }

.pp-close {
  width: 32px; height: 32px; border: none; background: none;
  font-size: 20px; color: var(--color-text-muted); cursor: pointer; border-radius: var(--radius-sm);
}
.pp-close:hover { background: var(--color-surface-alt); color: var(--color-text); }

/* Legend */
.pp-legend { display: flex; gap: 14px; font-size: 11px; color: var(--color-text-muted); }
.pp-leg { display: flex; align-items: center; gap: 4px; }
.pp-dot { width: 12px; height: 8px; border-radius: 2px; }
.pp-dot.changing { background: var(--color-accent); opacity: 0.35; border: 1px dashed var(--color-accent); }
.pp-dot.absorbed { background: var(--color-accent); }
.pp-dot.redistributed { background: var(--color-warning); }
.pp-dot.overflow { background: var(--color-danger); }
.pp-dot.unchanged { background: var(--color-border-strong); opacity: 0.5; }
.pp-dot.scheduled { background: var(--color-accent); }

/* ── Body — two lanes stacked ────────────────────────────────────────────── */

.pp-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
  min-width: 0; /* prevent flex blowout from wide Gantt */
}

/* ── Lane (Before / After) ───────────────────────────────────────────────── */

.pp-lane {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 50px;
  transition: flex 0.25s ease;
}

.pp-lane.collapsed {
  flex: 0 0 36px;
  min-height: 36px;
}

.pp-lane.collapsed .pp-lane-body {
  display: none;
}

/* When one lane collapses, sibling takes all space (flex:1 default handles this) */

.pp-lane-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--color-surface-alt);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.pp-lane-toggle {
  border: none;
  background: none;
  cursor: pointer;
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0;
}

.pp-chevron { font-size: 12px; color: var(--color-text-muted); }

.pp-lane-badge {
  font-size: 10px;
  font-weight: 600;
  padding: 1px 8px;
  border-radius: var(--radius-full);
}
.pp-lane-badge.before {
  background: color-mix(in srgb, var(--color-text-muted) 15%, transparent);
  color: var(--color-text-muted);
}
.pp-lane-badge.after {
  background: color-mix(in srgb, var(--color-accent) 15%, transparent);
  color: var(--color-accent);
}

.pp-lane-body {
  flex: 1;
  overflow: auto;
}

/* ── Date header (sticky inside each lane) ───────────────────────────────── */

.pp-date-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.pp-label-spacer { flex-shrink: 0; }

.pp-months { position: relative; height: 18px; }
.pp-month {
  position: absolute; top: 0; height: 18px;
  font-size: 10px; font-weight: 600; color: var(--color-text);
  display: flex; align-items: center; padding-left: 4px;
  border-left: 1px solid var(--color-border);
}

.pp-days { position: relative; height: 20px; }
.pp-day {
  position: absolute; top: 0; height: 20px;
  font-size: 9px; color: var(--color-text-muted);
  display: flex; align-items: center; justify-content: center;
  border-right: 1px solid rgba(0, 0, 0, 0.03);
}
.pp-day.wknd { background: rgba(0, 0, 0, 0.04); }
[data-theme="dark"] .pp-day.wknd { background: rgba(255, 255, 255, 0.05); }

/* ── Resource row ────────────────────────────────────────────────────────── */

.pp-row {
  display: flex;
  border-bottom: 1px solid var(--color-border);
}

.pp-row-label {
  flex-shrink: 0;
  display: flex; align-items: center;
  padding: 0 10px;
  font-size: 11px; font-weight: 500; color: var(--color-text);
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  position: sticky; left: 0; z-index: 5;
}

.pp-row-bars {
  position: relative;
  flex: 1;
}

/* Weekend stripes */
.pp-wknd-stripe { position: absolute; top: 0; background: rgba(0, 0, 0, 0.025); }
[data-theme="dark"] .pp-wknd-stripe { background: rgba(255, 255, 255, 0.035); }

/* Deadline line */
.pp-deadline {
  position: absolute; top: 0; width: 2px;
  background: var(--color-danger); z-index: 3;
}

/* ── Bars ─────────────────────────────────────────────────────────────────── */

.pp-bar {
  position: absolute;
  border-radius: 3px;
  display: flex; align-items: center;
  padding: 0 3px;
  overflow: hidden;
  z-index: 2;
  cursor: default;
}

.pp-bar-label {
  font-size: 9px; font-weight: 600;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

/* Before lane — tasks that will change */
.pp-bar.changing {
  background: var(--color-accent);
  opacity: 0.3;
  border: 1px dashed var(--color-accent);
}
.pp-bar.changing .pp-bar-label { color: var(--color-accent); }

/* After lane — absorbed (pulled earlier on same resource) */
.pp-bar.absorbed {
  background: var(--color-accent);
  opacity: 0.9;
}
.pp-bar.absorbed .pp-bar-label { color: white; }

/* After lane — redistributed (moved to different resource) */
.pp-bar.redistributed {
  background: var(--color-warning);
}
.pp-bar.redistributed .pp-bar-label { color: white; }

/* After lane — overflow / force-fitted */
.pp-bar.overflow {
  background: var(--color-danger);
  opacity: 0.85;
}
.pp-bar.overflow .pp-bar-label { color: white; }

/* After lane — scheduled (auto_schedule new placement) */
.pp-bar.scheduled {
  background: var(--color-accent);
  opacity: 0.9;
}
.pp-bar.scheduled .pp-bar-label { color: white; }

/* Unchanged (context) — both lanes */
.pp-bar.unchanged {
  background: var(--color-border-strong);
  opacity: 0.4;
}
.pp-bar.unchanged .pp-bar-label { color: var(--color-text-muted); font-weight: 500; }

/* ── Body wrap (Gantt + sidebar) ──────────────────────────────────────────── */

.pp-body-wrap {
  flex: 1;
  display: flex;
  overflow: hidden;
}

.pp-body-wrap > .pp-body {
  flex: 1;
  overflow: hidden;
}

/* ── Sidebar (changes table) ─────────────────────────────────────────────── */

/* Drag handle for sidebar resizing */
.pp-sidebar-resize {
  width: 5px;
  cursor: col-resize;
  background: transparent;
  flex-shrink: 0;
  position: relative;
  z-index: 2;
}
.pp-sidebar-resize:hover,
.pp-sidebar-resize:active { background: var(--color-accent); opacity: 0.4; }

.pp-sidebar {
  width: 340px;
  flex-shrink: 0;
  border-left: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  transition: width 0.2s ease;
}

.pp-sidebar.collapsed {
  width: 36px;
}
.pp-sidebar.collapsed .pp-sidebar-body { display: none; }
.pp-sidebar.collapsed .pp-sidebar-export { display: none; }
.pp-sidebar.collapsed .pp-sidebar-header { writing-mode: vertical-rl; text-orientation: mixed; padding: 12px 8px; }

.pp-sidebar-header {
  padding: 8px 12px;
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.pp-sidebar-export {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-size: 11px;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.pp-sidebar-export:hover { color: var(--color-accent); border-color: var(--color-accent); }

.pp-sidebar-toggle {
  border: none;
  background: none;
  cursor: pointer;
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--color-text);
  padding: 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.pp-sidebar-count {
  font-size: 10px;
  font-weight: 600;
  background: var(--color-accent);
  color: white;
  padding: 1px 6px;
  border-radius: var(--radius-full);
}

.pp-sidebar-body {
  flex: 1;
  overflow-y: auto;
  padding: 0;
}

/* Changes table */
.pp-change-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
}

.pp-change-table thead th {
  padding: 6px 8px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-text-muted);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: var(--color-surface);
}

.pp-change-row {
  cursor: pointer;
  border-bottom: 1px solid var(--color-border);
}
.pp-change-row:hover { background: var(--color-surface-alt); }
.pp-change-row.active { background: color-mix(in srgb, var(--color-accent) 10%, transparent); }

.pp-change-row td {
  padding: 5px 8px;
  white-space: nowrap;
}

.pp-change-task {
  font-weight: 600;
  color: var(--color-accent);
}

.pp-change-badge {
  font-size: 9px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: var(--radius-full);
}
.pp-change-badge.absorbed { background: color-mix(in srgb, var(--color-accent) 15%, transparent); color: var(--color-accent); }
.pp-change-badge.redistributed { background: color-mix(in srgb, var(--color-warning) 15%, transparent); color: var(--color-warning); }
.pp-change-badge.overflow { background: color-mix(in srgb, var(--color-danger) 15%, transparent); color: var(--color-danger); }

.pp-change-resource { color: var(--color-text-muted); }
.pp-change-dates { color: var(--color-text-muted); font-variant-numeric: tabular-nums; }
.pp-change-effort { color: var(--color-text); text-align: right; }

.pp-change-empty {
  padding: 20px;
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--font-xs);
}

/* ── Lane divider ────────────────────────────────────────────────────────── */

.pp-lane-divider {
  height: 3px;
  background: var(--color-accent);
  opacity: 0.3;
  flex-shrink: 0;
}

/* ── Cross-lane hover highlight ──────────────────────────────────────────── */

.pp-bar.pp-highlight {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
  opacity: 1 !important;
  z-index: 10;
}

/* ── Footer ──────────────────────────────────────────────────────────────── */

.pp-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
}

.pp-stats { font-size: var(--font-xs); color: var(--color-text-muted); }
.pp-actions { display: flex; gap: 8px; }

/* ── Tier badges (auto_schedule sidebar) ─────────────────────────────────── */

.pp-change-badge.tier-1 { background: var(--color-success); color: white; }
.pp-change-badge.tier-2 { background: var(--color-warning); color: white; }
.pp-change-badge.tier-3 { background: var(--color-text-muted); color: white; }

/* ── Unplaced section ────────────────────────────────────────────────────── */

.pp-unplaced-header {
  padding: 8px 10px 4px;
  font-size: var(--font-xs);
  font-weight: 600;
  color: var(--color-danger);
  border-top: 1px solid var(--color-border);
  margin-top: 8px;
}

.pp-change-row.unplaced { opacity: 0.7; }
.pp-change-reason { font-size: 11px; color: var(--color-text-muted); }