/**
 * Paediatric Fluid & Feed Calculator — shell and components (uses css/app-theme.css)
 */
html {
  height: 100%;
}

body.fluid-app {
  padding-bottom: calc(var(--tab-h) + var(--safe-b) + 8px);
  padding-top: var(--safe-t);
}

.fluid-app .page {
  display: none;
  padding: 16px calc(16px + var(--safe-r)) 8px calc(16px + var(--safe-l));
  max-width: 780px;
  margin: 0 auto;
}

.fluid-app .page.active {
  display: block;
}

.fluid-app .tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: calc(var(--tab-h) + var(--safe-b));
  background: rgba(26, 29, 39, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  justify-content: space-around;
  padding-top: 6px;
  padding-bottom: var(--safe-b);
  padding-left: var(--safe-l);
  padding-right: var(--safe-r);
  z-index: 100;
}

.fluid-app .tab-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  position: relative;
  z-index: 1;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px 4px;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.3px;
  transition: color 0.15s;
  min-height: 44px;
  touch-action: manipulation;
  -webkit-user-select: none;
  user-select: none;
}

.fluid-app .tab-btn svg,
.fluid-app .tab-btn span,
.fluid-app .tab-btn .tab-dot {
  pointer-events: none;
}

.fluid-app .tab-btn.active {
  color: var(--accent);
}

.fluid-app .tab-btn svg {
  width: 24px;
  height: 24px;
  stroke-width: 1.8;
}

.fluid-app .tab-btn .tab-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0;
  transition: opacity 0.15s;
  margin-top: 1px;
}

.fluid-app .tab-btn.active .tab-dot {
  opacity: 1;
}

.fluid-app .stat-grid.cols3 {
  grid-template-columns: 1fr 1fr 1fr;
}

@media (max-width: 360px) {
  .fluid-app .stat-grid.cols3 {
    grid-template-columns: 1fr 1fr;
  }
}

.fluid-app .btn-ghost {
  background: var(--surface2);
  color: var(--muted);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 10px 16px;
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  min-height: 44px;
}

.fluid-app .btn-ghost:active {
  background: var(--border);
  color: var(--text);
}

.fluid-app .btn-danger-sm {
  background: rgba(239, 68, 68, 0.12);
  color: var(--danger);
  border: 1.5px solid rgba(239, 68, 68, 0.3);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  min-width: 40px;
  min-height: 40px;
  transition: background 0.15s;
}

.fluid-app .btn-danger-sm:active {
  background: rgba(239, 68, 68, 0.25);
}

.fluid-app .gender-toggle {
  display: flex;
  border-radius: 10px;
  overflow: hidden;
  border: 1.5px solid var(--border);
}

.fluid-app .gender-toggle input[type="radio"] {
  display: none;
}

.fluid-app .gender-toggle label {
  flex: 1;
  text-align: center;
  padding: 12px 6px;
  font-size: 0.88rem;
  color: var(--muted);
  background: var(--surface2);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  border-right: 1px solid var(--border);
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.fluid-app .gender-toggle label:last-of-type {
  border-right: none;
}

.fluid-app .gender-toggle input[type="radio"]:checked + label {
  background: var(--accent);
  color: var(--accent-on);
  font-weight: 700;
}

.fluid-app .feed-entry {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.fluid-app .feed-entry input[type="number"] {
  flex: 1;
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 12px 12px;
  color: var(--text);
  font-size: 1rem;
  min-width: 0;
  transition: border-color 0.2s;
}

.fluid-app .feed-entry input[type="number"]:focus {
  outline: none;
  border-color: var(--accent);
}

.fluid-app .feed-entry select {
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 12px 10px;
  color: var(--text);
  font-size: 0.9rem;
  appearance: none;
  -webkit-appearance: none;
  min-height: 44px;
}

.fluid-app .feed-entry .conv {
  font-size: 0.72rem;
  color: var(--accent2);
  min-width: 62px;
  text-align: right;
  white-space: nowrap;
}

.fluid-app .feed-entry .remove-btn {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s;
}

.fluid-app .feed-entry.has-value .remove-btn {
  opacity: 1;
  pointer-events: all;
}

.fluid-app .alert-orange {
  background: rgba(249, 115, 22, 0.1);
  border: 1px solid rgba(249, 115, 22, 0.35);
  color: #fb923c;
}

.fluid-app .alert-yellow {
  background: rgba(234, 179, 8, 0.1);
  border: 1px solid rgba(234, 179, 8, 0.35);
  color: #eab308;
}

.fluid-app .bd {
  font-size: 0.76rem;
  color: var(--muted);
  line-height: 1.9;
}

.fluid-app .bd b {
  color: var(--text);
}

.fluid-app .weight-mirror {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.76rem;
  color: var(--accent2);
  background: rgba(32, 178, 170, 0.1);
  border: 1px solid rgba(32, 178, 170, 0.2);
  border-radius: 20px;
  padding: 4px 12px;
  margin-bottom: 12px;
}

.fluid-app #install-banner {
  display: none;
  align-items: center;
  justify-content: space-between;
  background: rgba(32, 178, 170, 0.1);
  border: 1px solid rgba(32, 178, 170, 0.25);
  border-radius: 12px;
  padding: 12px 14px;
  margin: 0 16px 12px;
  gap: 12px;
}

.fluid-app #install-banner p {
  font-size: 0.8rem;
  color: var(--text);
  flex: 1;
  line-height: 1.4;
}

.fluid-app #install-banner p span {
  color: var(--accent);
  font-weight: 600;
}

.fluid-app .install-btn {
  background: var(--accent);
  color: var(--accent-on);
  border: none;
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  min-height: 36px;
}

.fluid-app .install-close {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 1.2rem;
  padding: 4px;
  min-width: 32px;
  min-height: 32px;
}

.fluid-app .desktop-nav {
  display: none;
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(15, 17, 23, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  justify-content: center;
  gap: 4px;
  padding: 10px calc(20px + var(--safe-r)) 10px calc(20px + var(--safe-l));
}

.fluid-app .desktop-nav-btn {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.fluid-app .desktop-nav-btn:hover {
  background: var(--surface2);
  color: var(--text);
}

.fluid-app .section-sep {
  margin: 24px 0 0;
  border-top: 2px solid var(--border);
  padding-top: 8px;
}

.fluid-app .section-sep h1 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent2);
  margin: 10px 0 16px;
}

.fluid-app .hidden {
  display: none;
}

@media (min-width: 640px) {
  body.fluid-app {
    padding-bottom: 20px;
    font-size: 15px;
  }

  .fluid-app .tab-bar {
    display: none;
  }

  .fluid-app .page {
    display: block !important;
    padding: 20px calc(20px + var(--safe-r)) 0 calc(20px + var(--safe-l));
  }

  .fluid-app .desktop-nav {
    display: flex !important;
  }
}