/* ═══════════════════════════════════════════════════════════════
   RapidAtlas Flight Scheduler — Styles
   Design: Dark premium, glassmorphism accents
   ═══════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg-deep:        #080d1a;
  --bg-surface:     #0e1529;
  --bg-card:        rgba(255,255,255,0.04);
  --bg-card-hover:  rgba(255,255,255,0.07);
  --border:         rgba(255,255,255,0.08);
  --border-strong:  rgba(255,255,255,0.16);
  --text-primary:   #f0f4ff;
  --text-secondary: #8892aa;
  --text-muted:     #4a5568;
  --accent:         #3b82f6;
  --accent-glow:    rgba(59,130,246,0.25);
  --green:          #22c55e;
  --green-bg:       rgba(34,197,94,0.15);
  --green-border:   rgba(34,197,94,0.3);
  --yellow:         #eab308;
  --yellow-bg:      rgba(234,179,8,0.15);
  --yellow-border:  rgba(234,179,8,0.3);
  --red:            #ef4444;
  --red-bg:         rgba(239,68,68,0.15);
  --red-border:     rgba(239,68,68,0.3);
  --critical:       #ff4d6d;
  --high:           #f97316;
  --normal:         #3b82f6;
  --low:            #64748b;
  --cell-w:         68px;
  --weekend-w:      20px;
  --row-h:          104px;
  --left-w:         340px;
  --header-h:       56px;
}

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

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg-deep);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ─── Top Bar ─────────────────────────────────────────────── */

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 24px;
  height: 60px;
  background: rgba(8,13,26,0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.topbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.3px;
}

.topbar-logo .logo-icon {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, #3b82f6, #6366f1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.topbar-title {
  color: var(--text-secondary);
  font-weight: 400;
  font-size: 13px;
  margin-left: 4px;
}

.topbar-spacer { flex: 1; }

.topbar-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  color: var(--text-secondary);
}

.refresh-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 12px;
  padding: 6px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
}
.refresh-btn:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.add-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  border: none;
  color: #fff;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 0 20px var(--accent-glow);
}
.add-btn:hover {
  background: #2563eb;
  box-shadow: 0 0 28px var(--accent-glow);
  transform: translateY(-1px);
}

/* ─── Main Layout ─────────────────────────────────────────── */

.main-layout {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 12px 24px 20px 24px;
}

/* ─── Proximity Alerts ────────────────────────────────────── */

#proximity-alerts { display: flex; flex-direction: column; gap: 8px; }

.proximity-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(234,179,8,0.08);
  border: 1px solid rgba(234,179,8,0.25);
  border-radius: 10px;
  padding: 10px 16px;
  font-size: 13px;
  animation: slideDown 0.3s ease;
}
.proximity-card .prox-icon { font-size: 18px; }
.proximity-card strong { color: var(--yellow); }
.proximity-card .prox-dist { color: var(--text-secondary); font-size: 12px; margin-left: auto; }
.prox-dismiss {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-muted);
  border-radius: 6px;
  padding: 2px 7px;
  font-size: 12px;
  cursor: pointer;
  flex-shrink: 0;
  margin-left: 8px;
  transition: all 0.15s;
}
.prox-dismiss:hover { background: rgba(255,255,255,0.08); color: var(--text-primary); }

/* ─── Part 107 Panel ──────────────────────────────────────── */

.p107-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 20px;
}

.p107-panel h3 {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.p107-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
}

.p107-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-secondary);
}
.p107-item .p107-val {
  font-weight: 600;
  color: var(--text-primary);
}
.p107-item .p107-flag { color: var(--red); font-size: 14px; }

/* ─── Legend ──────────────────────────────────────────────── */

.legend {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-secondary);
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 3px;
}
.legend-dot.green    { background: var(--green); }
.legend-dot.yellow   { background: var(--yellow); }
.legend-dot.red      { background: var(--red); }
.legend-dot.empty    { background: rgba(255,255,255,0.08); border: 1px solid var(--border); }
.legend-dot.extended { background: rgba(255,255,255,0.08); border: 1px dashed rgba(255,255,255,0.3); opacity: 0.5; }

/* ─── Gantt Container ─────────────────────────────────────── */

.gantt-wrapper {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: clip;
}

.gantt-scroll-container {
  overflow-x: auto;
  overflow-y: visible;
  position: relative;
}

.gantt-grid {
  display: table;
  min-width: max-content;
  width: 100%;
}

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

.gantt-header-row {
  display: flex;
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-strong);
}

.gantt-header-left {
  flex-shrink: 0;
  width: var(--left-w);
  padding: 12px 20px;
  display: flex;
  align-items: flex-end;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-muted);
  border-right: 1px solid var(--border-strong);
}

.gantt-header-cells {
  display: flex;
}

.gantt-header-cell {
  flex-shrink: 0;
  width: var(--cell-w);
  padding: 8px 4px;
  text-align: center;
  border-right: 1px solid var(--border);
  transition: background 0.15s;
}

.gantt-header-cell.today {
  background: rgba(59,130,246,0.12);
  border-right-color: rgba(59,130,246,0.3);
}

.gantt-header-cell.week-start {
  border-left: 2px solid var(--border-strong);
}

/* Weekend header cell */
.gantt-header-cell.weekend {
  width: var(--weekend-w);
  background: rgba(255,255,255,0.015);
  border-right-color: rgba(255,255,255,0.04);
  padding: 4px 0;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  opacity: 0.4;
}

.hdr-wknd {
  font-size: 8px;
  font-weight: 600;
  color: var(--text-muted);
  writing-mode: vertical-lr;
  transform: rotate(180deg);
  letter-spacing: 0.5px;
}

.gantt-header-cell .hdr-month {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}

.gantt-header-cell .hdr-day {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  margin: 2px 0;
}

.gantt-header-cell .hdr-dow {
  font-size: 10px;
  color: var(--text-muted);
  font-weight: 500;
}

.gantt-header-cell.today .hdr-day {
  color: var(--accent);
}
.gantt-header-cell.today .hdr-dow {
  color: var(--accent);
}

/* ─── Gantt Rows ──────────────────────────────────────────── */

.gantt-body { display: flex; flex-direction: column; }

.gantt-row {
  display: flex;
  align-items: stretch;
  border-bottom: 1px solid var(--border);
  min-height: var(--row-h);
  transition: background 0.15s;
  cursor: grab;
}
.gantt-row:last-child { border-bottom: none; }
.gantt-row:hover { background: rgba(255,255,255,0.02); }
.gantt-row.dragging { opacity: 0.4; }
.gantt-row.drag-over { background: rgba(59,130,246,0.08); border-color: rgba(59,130,246,0.3); }

/* ─── Row Left Panel ──────────────────────────────────────── */

.row-left {
  flex-shrink: 0;
  width: var(--left-w);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-right: 1px solid var(--border-strong);
}

.drag-handle {
  color: var(--text-muted);
  font-size: 14px;
  cursor: grab;
  flex-shrink: 0;
  user-select: none;
}

.priority-badge {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
}

.row-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.row-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.row-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.row-location {
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.importance-badge {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 2px 6px;
  border-radius: 4px;
}
.importance-badge.critical { background: rgba(255,77,109,0.2); color: var(--critical); }
.importance-badge.high     { background: rgba(249,115,22,0.2); color: var(--high); }
.importance-badge.normal   { background: rgba(59,130,246,0.2); color: var(--normal); }
.importance-badge.low      { background: rgba(100,116,139,0.2); color: var(--low); }

.overdue-badge {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(239,68,68,0.2);
  color: var(--red);
}

.row-target {
  font-size: 11px;
  color: var(--text-secondary);
}

.row-actions {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex-shrink: 0;
  opacity: 0;
  transition: opacity 0.15s;
}
.gantt-row:hover .row-actions { opacity: 1; }

.row-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.row-btn:hover { background: var(--bg-card-hover); color: var(--text-primary); }
.row-btn.done-btn:hover { background: rgba(34,197,94,0.15); color: var(--green); border-color: var(--green-border); }
.row-btn.edit-btn:hover { background: rgba(59,130,246,0.15); color: var(--accent); border-color: rgba(59,130,246,0.3); }

/* ─── Gantt Cells ─────────────────────────────────────────── */

.row-cells { display: flex; align-items: stretch; }

.gantt-cell {
  flex-shrink: 0;
  width: var(--cell-w);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 6px 2px;
  position: relative;
  transition: background 0.15s;
  min-height: var(--row-h);
}

.gantt-cell.week-start { border-left: 2px solid var(--border-strong); }
.gantt-cell.today-col  { background: rgba(59,130,246,0.06); border-right-color: rgba(59,130,246,0.2); }

/* Weekend body cell — narrow grey spacer */
.gantt-cell.weekend {
  width: var(--weekend-w);
  min-width: var(--weekend-w);
  background: rgba(255,255,255,0.012);
  border-right: 1px solid rgba(255,255,255,0.04);
}

/* Drop target highlight when dragging a 🎯 flag */
.gantt-cell.drop-target {
  background: rgba(234,179,8,0.18) !important;
  border: 1px dashed rgba(234,179,8,0.7) !important;
  box-shadow: inset 0 0 12px rgba(234,179,8,0.15);
}

/* Weather cell backgrounds */
.gantt-cell.precip-green  { background: var(--green-bg);  border-right-color: var(--green-border); }
.gantt-cell.precip-yellow { background: var(--yellow-bg); border-right-color: var(--yellow-border); }
.gantt-cell.precip-red    { background: var(--red-bg);    border-right-color: var(--red-border); }

/* Extended forecast — washed out, low confidence zone */
.gantt-cell.extended-forecast {
  background: rgba(255,255,255,0.008);
  border-top: 1px dashed rgba(255,255,255,0.12);
}
.gantt-cell.extended-forecast .cell-icon   { opacity: 0.45; }
.gantt-cell.extended-forecast .cell-precip { opacity: 0.5; }


.cell-icon   { font-size: 18px; line-height: 1; }
.cell-precip { font-size: 11px; font-weight: 700; color: #60a5fa; }
.cell-wind   { font-size: 10px; color: var(--text-secondary); }
.cell-temps  { font-size: 10px; font-weight: 500; color: var(--text-secondary); white-space: nowrap; }
.cell-temp-sep { color: var(--text-muted); margin: 0 1px; }


.cell-flag {
  position: absolute;
  top: 4px;
  right: 4px;
  font-size: 10px;
  title: 'Part 107 wind limit exceeded';
}

/* Target date flag — large and prominent, pinned to top of cell */
.target-flag {
  position: absolute;
  top: 4px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 22px;
  z-index: 5;
  filter: drop-shadow(0 0 10px rgba(234,179,8,0.9)) drop-shadow(0 0 20px rgba(234,179,8,0.5));
  animation: pulse 2s ease-in-out infinite;
  cursor: grab;
  line-height: 1;
  user-select: none;
}
.target-flag:active { cursor: grabbing; }

/* Shift weather content below the flag so nothing overlaps */
.gantt-cell.has-target {
  padding-top: 30px;
  justify-content: flex-end;
  padding-bottom: 6px;
}

/* Loading shimmer */
.cell-loading {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card-hover) 50%, var(--bg-card) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

/* Empty future cell */
.gantt-cell.future { background: transparent; }

/* ─── Empty State ─────────────────────────────────────────── */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 20px;
  gap: 12px;
  color: var(--text-muted);
}
.empty-state .empty-icon { font-size: 48px; }
.empty-state h3 { font-size: 18px; color: var(--text-secondary); }
.empty-state p  { font-size: 14px; text-align: center; max-width: 360px; line-height: 1.5; }

/* ─── Modal ───────────────────────────────────────────────── */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease;
}
.modal-overlay.hidden { display: none; }

.modal {
  background: #121b2f;
  border: 1px solid var(--border-strong);
  border-radius: 20px;
  padding: 28px;
  width: 100%;
  max-width: 540px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 40px 80px rgba(0,0,0,0.6);
  animation: slideUp 0.25s ease;
}

.modal h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}
.form-full { grid-column: 1 / -1; }

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 14px;
  padding: 10px 14px;
  outline: none;
  transition: border-color 0.2s;
  width: 100%;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-group select option { background: #1a2540; }
.form-group textarea { resize: vertical; min-height: 70px; }

.geocode-results {
  background: #0e1529;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  margin-top: 4px;
  overflow: hidden;
  max-height: 160px;
  overflow-y: auto;
}
.geocode-result-item {
  padding: 8px 12px;
  font-size: 13px;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  transition: background 0.15s;
}
.geocode-result-item:hover { background: var(--bg-card); color: var(--text-primary); }
.geocode-result-item:last-child { border-bottom: none; }

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

.btn-cancel {
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  padding: 10px 20px;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-cancel:hover { background: var(--bg-card); color: var(--text-primary); }

.btn-save {
  background: var(--accent);
  border: none;
  color: #fff;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 0 20px var(--accent-glow);
}
.btn-save:hover { background: #2563eb; }

/* ─── Section divider ─────────────────────────────────────── */

.section-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}
.section-title {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
}

/* ─── Scrollbar ───────────────────────────────────────────── */

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

/* ─── Animations ──────────────────────────────────────────── */

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position:  200% 0; }
}

@keyframes fadeOut {
  from { opacity: 1; transform: translateY(0); }
  to   { opacity: 0; transform: translateY(-6px); }
}

@keyframes pulse {
  0%, 100% { transform: translateX(-50%) scale(1); }
  50%       { transform: translateX(-50%) scale(1.2); }
}

/* ─── Responsive ──────────────────────────────────────────── */

@media (max-width: 768px) {
  :root { --left-w: 220px; --cell-w: 58px; }
  .topbar { padding: 0 12px; }
  .main-layout { padding: 12px; }
  .form-grid { grid-template-columns: 1fr; }
}

.taf-badge {
    position: absolute;
    bottom: 2px;
    right: 2px;
    background: rgba(59, 130, 246, 0.15);
    color: #3b82f6;
    font-size: 8px;
    font-weight: 700;
    padding: 2px 4px;
    border-radius: 4px;
    cursor: help;
    white-space: pre-wrap;
    z-index: 10;
    pointer-events: auto;
}
.taf-badge:hover {
    background: rgba(59, 130, 246, 0.3);
}