/* ══════════════════════════════════════════════════════════
   IOOS Model Comparisons – Custom Stylesheet
   Built on Bootstrap 5.3  |  Font: Inter (Google Fonts)
   ══════════════════════════════════════════════════════════ */

/* ─── Design Tokens ─── */
:root {
  --navy:          #cc0033; /* Rutgers Scarlet */
  --navy-mid:      #b3002d;
  --navy-light:    #e60039;
  --ocean-blue:    #5f6a72; /* Rutgers Grey */
  --ocean-accent:  #000000; /* Rutgers Black */
  --ocean-light:   #f5f7f9;
  --sidebar-bg:    #fafafa;
  --sidebar-border:#e5e7ea;
  --panel-bg:      #ffffff;
  --panel-border:  #d8dce1;
  --text-main:     #1a1a1a;
  --text-muted:    #5f6a72;
  --tab-bar-bg:    #f2f4f7;
  --tab-bar-border:#cfd6dd;
  --radius-md:     .625rem;
  --radius-sm:     .375rem;
  --shadow-card:   0 2px 12px rgba(0,0,0,.08);
  --shadow-hover:  0 6px 24px rgba(204,0,51,.15);
  --transition:    .18s ease;
}

/* ─── Base ─── */
*, *::before, *::after { box-sizing: border-box; }

html {
  height: 100%;
  overflow: hidden;
}

body {
  height: 100%;
  margin: 0;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 14px;
  color: var(--text-main);
  background: var(--tab-bar-bg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ─── Navbar ─── */
.bg-navy {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 60%, var(--navy-light) 100%) !important;
  border-bottom: 1px solid rgba(255,255,255,.08);
  box-shadow: 0 2px 16px rgba(0,0,0,.25);
}

.brand-title {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -.01em;
  color: #fff;
}

.brand-sub {
  font-size: .75rem;
  color: rgba(255,255,255,.55);
  font-weight: 400;
}

.nav-badge {
  font-size: .7rem;
  padding: .25em .6em;
  border-radius: 20px;
  letter-spacing: .03em;
  background: rgba(255,255,255,.12) !important;
  color: rgba(255,255,255,.85) !important;
}

.nav-timestamp {
  font-size: 1.44rem;
  color: rgba(255,255,255,.5);
  font-feature-settings: 'tnum';
}

/* ─── App wrapper ─── */
.app-wrapper {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

/* Tab content fills remaining app-wrapper height */
#mainTabContent {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

/* Active tab pane fills tab-content as a flex column */
.tab-pane.show.active {
  display: flex !important;   /* overrides Bootstrap's display:block */
  flex-direction: column;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

/* ─── Tab nav bar ─── */
.tab-nav-bar {
  background: var(--tab-bar-bg);
  border-bottom: 1px solid var(--tab-bar-border);
  padding: .5rem 0;
}

.tab-pills .nav-link {
  color: var(--text-muted);
  font-weight: 500;
  font-size: .85rem;
  border-radius: var(--radius-sm);
  padding: .45rem 1.1rem;
  transition: background var(--transition), color var(--transition);
}

.tab-pills .nav-link:hover {
  background: rgba(21,101,192,.08);
  color: var(--ocean-blue);
}

.tab-pills .nav-link.active {
  background: var(--ocean-blue);
  color: #fff;
}

/* ─── Content grid ─── */
.content-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 0;
  flex: 1;       /* fill the active tab-pane (which is now flex column) */
  min-height: 0;
  overflow: hidden;
}

/* ─── Sidebar ─── */
.controls-sidebar {
  background: var(--sidebar-bg);
  border-right: 1px solid var(--sidebar-border);
  padding: 1.25rem 1rem;
  overflow-y: auto;
}

.controls-card {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.controls-header {
  background: linear-gradient(90deg, var(--navy) 0%, var(--navy-light) 100%);
  color: #fff;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  padding: .6rem 1rem;
}

.controls-body {
  padding: 1rem;
}

/* ─── Control groups ─── */
.control-group {
  margin-bottom: .9rem;
}

.control-label {
  display: block;
  font-size: .75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-bottom: .3rem;
}

.control-input {
  border-color: var(--sidebar-border);
  color: var(--text-main);
  font-size: .82rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.control-input:focus {
  border-color: var(--ocean-accent);
  box-shadow: 0 0 0 3px rgba(33,150,243,.15);
}

/* ─── Time badge ─── */
.time-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--navy);
  color: #fff;
  font-size: .78rem;
  font-weight: 700;
  font-feature-settings: 'tnum';
  padding: .25rem .65rem;
  border-radius: var(--radius-sm);
  min-width: 3.2rem;
  letter-spacing: .05em;
}

/* ─── Buttons (ocean theme) ─── */
.btn-ocean {
  background: linear-gradient(135deg, var(--ocean-blue) 0%, var(--ocean-accent) 100%);
  border: none;
  color: #fff;
  font-weight: 600;
  font-size: .82rem;
  border-radius: var(--radius-sm);
  transition: opacity var(--transition), box-shadow var(--transition), transform var(--transition);
  box-shadow: 0 2px 8px rgba(21,101,192,.3);
}

.btn-ocean:hover {
  opacity: .9;
  box-shadow: 0 4px 14px rgba(21,101,192,.4);
  transform: translateY(-1px);
  color: #fff;
}

.btn-ocean:active { transform: translateY(0); }

.btn-ocean:disabled {
  opacity: .6;
  pointer-events: none;
}

.btn-outline-ocean {
  border: 1.5px solid var(--ocean-blue);
  color: var(--ocean-blue);
  font-size: .78rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition), transform var(--transition);
}

.btn-outline-ocean:hover {
  background: var(--ocean-blue);
  color: #fff;
  transform: translateY(-1px);
}

.btn-outline-ocean:active {
  transform: translateY(0);
}

/* ─── Legend ─── */
.legend-item {
  display: flex;
  align-items: center;
  gap: .5rem;
  color: var(--text-main);
}

.legend-dot {
  display: inline-block;
  width: .6rem;
  height: .6rem;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ─── Image display ─── */
.image-display {
  padding: 1.25rem 1.5rem;
  background: var(--tab-bar-bg);
  display: flex;
  flex-direction: column;
  overflow: hidden; /* no outer scroll – image fits inside */
}

.image-panel {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: box-shadow var(--transition);
  display: flex;
  flex-direction: column;
  flex: 1;          /* stretch to fill image-display */
  min-height: 0;    /* allow shrinking below content size */
}

.image-panel:hover {
  box-shadow: var(--shadow-hover);
}

.image-panel-header {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .55rem 1rem;
  border-bottom: 1px solid var(--panel-border);
  background: #fafcff;
}

.panel-badge {
  font-size: .72rem;
  font-weight: 700;
  padding: .2em .65em;
  border-radius: 20px;
  letter-spacing: .03em;
}

.image-panel-body {
  padding: .75rem;
  min-height: 0;
  flex: 1;           /* fill remaining height inside .image-panel */
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;  /* never scroll – image scales to fit */
}

.image-panel-body img.plot-image {
  max-width: 100%;
  max-height: 100%;  /* key: image shrinks to fit the body's height */
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-sm);
  display: block;
  animation: fadeIn .3s ease;
}

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

/* ─── Placeholder & loading states ─── */
.placeholder-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
  width: 100%;
}

.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 1rem;
  gap: .75rem;
  color: var(--ocean-blue);
  width: 100%;
}

.unavailable-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2.5rem 1rem;
  gap: .5rem;
  color: var(--text-muted);
  width: 100%;
}

/* ─── No-data message ─── */
.no-data-msg {
  font-size: .75rem;
  color: #dc3545;
  margin-top: .35rem;
  padding: .35rem .6rem;
  background: #fff5f5;
  border-radius: var(--radius-sm);
  border: 1px solid #ffd0d0;
}

/* ─── Btn-check + label reset ─── */
.btn-check:checked + .btn-outline-ocean {
  background: var(--ocean-blue);
  color: #fff;
  border-color: var(--ocean-blue);
}

/* ─── Region Flip Buttons ─── */
.region-flip-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--panel-border);
  color: var(--ocean-blue);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: 0 4px 12px rgba(11, 30, 61, 0.15);
  cursor: pointer;
  transition: all var(--transition);
  z-index: 10;
}
.region-flip-btn:hover {
  background: var(--ocean-blue);
  color: #fff;
  transform: translateY(-50%) scale(1.05);
}
.region-flip-btn:active {
  transform: translateY(-50%) scale(0.95);
}
.region-flip-btn.left { left: 1rem; }
.region-flip-btn.right { right: 1rem; }

/* ─── Responsive ─── */
@media (max-width: 900px) {
  .content-grid {
    grid-template-columns: 1fr;
  }
  .controls-sidebar {
    border-right: none;
    border-bottom: 1px solid var(--sidebar-border);
    padding: .75rem;
  }
}

@media (max-width: 576px) {
  .image-display { padding: .75rem; }
  .brand-title   { font-size: .85rem; }
}

/* ─── Overview pane layout ─── */
.ov-region-bar {
  flex-shrink: 0;
  padding: .45rem 1rem;
  background: var(--tab-bar-bg);
  border-bottom: 1px solid var(--tab-bar-border);
  overflow-x: auto;
  display: flex;
  justify-content: center;
}

.ov-sidebar-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.ov-sidebar-grid > aside { overflow-y: auto; overflow-x: hidden; }
.ov-sidebar-grid > main  { overflow: hidden; }

/* ─── Map Model Tabs ─── */
#mapModelTabs .nav-link {
  color: var(--text-muted);
  border: 1px solid transparent;
  border-bottom: none;
  background: transparent;
  transition: color var(--transition), background var(--transition);
}
#mapModelTabs .nav-link:hover {
  color: var(--navy);
  background: rgba(204, 0, 51, 0.05);
}
#mapModelTabs .nav-link.active {
  color: var(--navy);
  background: var(--panel-bg);
  border-color: var(--panel-border);
  border-bottom-color: var(--panel-bg);
  font-weight: 600;
}