:root {
  --app-height: 100dvh;
  --bg: #0b1020;
  --bg2: #111933;
  --panel: rgba(18, 26, 51, 0.82);
  --panel-strong: rgba(17, 25, 48, 0.96);
  --panel2: rgba(255, 255, 255, 0.08);
  --text: #eef3ff;
  --muted: #9fb0d4;
  --line: rgba(170, 195, 255, 0.28);
  --line-strong: rgba(200, 220, 255, 0.45);
  --small: #82d7ff;
  --large: #ffb366;
  --global: #d6a3ff;
  --accent: #9fd0ff;
  --danger: #ff8f9f;
  --shadow: 0 16px 48px rgba(0, 0, 0, 0.32);
  --radius-inner: 148px;
  --radius-middle: 248px;
  --radius-outer: 356px;
  --card-width: clamp(196px, 25vw, 280px);
  --node-width: clamp(104px, 14vw, 138px);
  --font-ui: "Aptos", "Segoe UI", "Helvetica Neue", sans-serif;
  --font-display: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --radius-control: 14px;
  --radius-card: 14px;
  --radius-node: 12px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html,
body {
  margin: 0;
  width: 100%;
  min-height: var(--app-height);
  background-color: #070b16;
  background: linear-gradient(180deg, var(--bg), #070b16 100%);
  color: var(--text);
  font-family: var(--font-ui);
  overflow: hidden;
  touch-action: manipulation;
  overscroll-behavior: none;
}

body {
  min-height: var(--app-height);
}

button,
input {
  font: inherit;
}

button {
  font-weight: 500;
}

.app-shell {
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  height: var(--app-height);
  overflow: hidden;
  isolation: isolate;
  background-color: #070b16;
  background: linear-gradient(180deg, var(--bg), #070b16 100%);
}

.background-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  display: block;
  opacity: 0;
  transition: opacity 700ms ease;
}

.background-canvas.is-ready {
  opacity: 0.9;
}

.graph {
  position: absolute;
  inset: 0;
  z-index: 1;
}

#lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.nodes-layer {
  position: absolute;
  inset: 0;
}

.transition-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 18;
}

.hud {
  position: absolute;
  left: max(16px, env(safe-area-inset-left));
  right: max(16px, env(safe-area-inset-right));
  top: max(16px, env(safe-area-inset-top));
  z-index: 24;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: stretch;
}

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  min-width: 0;
}

.icon-button,
.search-shell input {
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: var(--panel);
  color: var(--text);
  border-radius: var(--radius-control);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 44px;
  width: 44px;
  min-width: 44px;
  height: 44px;
  min-height: 44px;
  padding: 0;
  cursor: pointer;
}

.icon-button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.icon-button:active:not(:disabled) {
  transform: translateY(1px);
}

.icon-button.is-active {
  border-color: rgba(159, 208, 255, 0.4);
  background: rgba(24, 36, 68, 0.94);
}

.search-shell {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  min-width: 0;
}

.search-input-wrap {
  width: 0;
  opacity: 0;
  overflow: hidden;
  transition: width 180ms ease, opacity 160ms ease;
}

.search-shell[data-open="true"] .search-input-wrap {
  width: min(260px, 52vw);
  opacity: 1;
}

.search-shell input {
  width: 100%;
  min-width: 0;
  padding: 12px 14px;
  font-size: 16px;
  font-weight: 450;
  letter-spacing: 0.01em;
  outline: none;
}

.search-shell input::placeholder {
  color: var(--muted);
}

.icon-button:disabled,
.search-shell input:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.center-wrap {
  position: absolute;
  left: 50%;
  top: 52%;
  transform: translate(-50%, -50%);
  z-index: 5;
}

.center-card {
  width: var(--card-width);
  border-radius: var(--radius-card);
  padding: 16px 16px 14px;
  background: linear-gradient(180deg, rgba(20, 30, 59, 0.95), rgba(12, 18, 37, 0.94));
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.center-card.is-transition-hidden {
  opacity: 0;
}

.center-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 13px;
}

.title {
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  line-height: 1.02;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.015em;
  margin: 0;
  word-break: break-word;
}

.card-icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  min-width: 28px;
  height: 28px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.04);
  color: rgba(238, 243, 255, 0.88);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(12px);
  cursor: pointer;
  flex: 0 0 auto;
}

.card-icon-button svg {
  width: 13px;
  height: 13px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.card-icon-button.is-saved {
  border-color: rgba(255, 143, 159, 0.42);
  background: rgba(255, 143, 159, 0.12);
  color: #ffc1cd;
}

.favorite-icon-heart {
  fill: transparent;
  transition: fill 160ms ease, opacity 160ms ease;
}

.favorite-toggle.is-saved .favorite-icon-heart {
  fill: currentColor;
}

.helper-copy {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.35;
  font-weight: 450;
}

.ingredients {
  display: grid;
  gap: 7px;
}

.ing {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  justify-content: start;
  gap: 11px;
  font-size: 0.84rem;
  line-height: 1.22;
  text-align: left;
}

.ing .amt {
  color: var(--accent);
  white-space: nowrap;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.ing .name {
  color: var(--text);
  text-align: left;
  font-weight: 400;
}

.move-node {
  position: absolute;
  width: var(--node-width);
  min-height: 38px;
  padding: 10px 10px 9px;
  transform: translate(-50%, -50%);
  border-radius: var(--radius-node);
  background: linear-gradient(180deg, rgba(22, 31, 60, 0.96), rgba(14, 20, 39, 0.95));
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text);
  box-shadow: var(--shadow);
  z-index: 10;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  will-change: left, top, transform, opacity;
}

.move-node.local_small {
  border-color: rgba(130, 215, 255, 0.35);
}

.move-node.local_large {
  border-color: rgba(255, 179, 102, 0.35);
}

.move-node.global {
  border-color: rgba(214, 163, 255, 0.35);
}

.move-node .name {
  font-size: 0.72rem;
  font-family: var(--font-ui);
  font-weight: 520;
  letter-spacing: 0.01em;
  line-height: 1.12;
  color: rgba(238, 243, 255, 0.75);
  word-break: break-word;
}

.move-node:active {
  transform: translate(-50%, -50%) scale(0.985);
}

.transition-card {
  position: fixed;
  overflow: hidden;
  pointer-events: none;
  z-index: 30;
  transform-origin: top left;
  will-change: transform, opacity;
}

.favorites-backdrop {
  position: absolute;
  inset: 0;
  z-index: 21;
  background: rgba(3, 6, 14, 0.34);
  backdrop-filter: blur(3px);
}

.favorites-panel {
  position: absolute;
  top: max(72px, calc(env(safe-area-inset-top) + 72px));
  right: max(16px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  width: min(360px, calc(100vw - 32px));
  z-index: 22;
  display: block;
  padding: 18px 16px 16px;
  border-radius: 18px;
  background: rgba(10, 16, 31, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 22px 64px rgba(0, 0, 0, 0.36);
  backdrop-filter: blur(18px);
  overflow: hidden;
}

.search-panel {
  position: absolute;
  top: max(72px, calc(env(safe-area-inset-top) + 72px));
  left: auto;
  right: max(16px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  width: min(380px, calc(100vw - 32px));
  z-index: 23;
  padding: 0;
  border-radius: 18px;
  background: rgba(10, 16, 31, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 22px 64px rgba(0, 0, 0, 0.36);
  backdrop-filter: blur(18px);
  overflow: hidden;
}

.favorites-list {
  display: grid;
  align-content: start;
  gap: 12px;
  height: 100%;
  overflow: auto;
  padding-right: 2px;
}

.search-results {
  display: grid;
  align-content: start;
  gap: 12px;
  height: 100%;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  padding: 18px 16px 16px;
}

.favorites-empty {
  display: grid;
  gap: 8px;
  padding: 10px 2px;
  color: var(--muted);
}

.favorites-empty-copy {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.45;
}

.favorites-inline-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.05em;
  height: 1.05em;
  margin: 0 0.18em;
  vertical-align: -0.12em;
  color: #ffc1cd;
}

.favorites-inline-icon svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.saved-card {
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: linear-gradient(180deg, rgba(24, 35, 65, 0.92), rgba(12, 18, 36, 0.94));
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.24);
  overflow: hidden;
}

.saved-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 14px 10px;
}

.saved-card-title-button,
.saved-card-link {
  display: block;
  width: 100%;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
}

.saved-card-title-button {
  min-width: 0;
  padding: 0;
}

.saved-card-link {
  padding: 0 14px 14px;
}

.saved-card-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.01em;
}

.search-result-item {
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 68px;
  padding: 16px 18px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: linear-gradient(180deg, rgba(24, 35, 65, 0.92), rgba(12, 18, 36, 0.94));
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.24);
  appearance: none;
  -webkit-appearance: none;
  color: inherit;
  text-align: left;
  cursor: pointer;
  flex: none;
}

.search-result-name {
  display: block;
  margin: 0;
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.24;
  letter-spacing: 0;
}

.saved-card-ingredients {
  display: grid;
  gap: 6px;
}

.saved-card-ingredients .ing {
  font-size: 0.76rem;
  gap: 10px;
}

.loading-overlay {
  position: absolute;
  inset: 0;
  z-index: 15;
  display: grid;
  place-items: center;
  padding: 24px;
  background: linear-gradient(180deg, rgba(8, 11, 22, 0.2), rgba(8, 11, 22, 0.42));
  transition: opacity 180ms ease;
}

.loading-panel {
  display: grid;
  gap: 14px;
  place-items: center;
  min-width: min(320px, 90vw);
  padding: 22px 20px;
  border-radius: 18px;
  background: rgba(9, 14, 29, 0.68);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.spinner {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 3px solid rgba(255, 255, 255, 0.12);
  border-top-color: var(--accent);
  animation: spin 0.8s linear infinite;
}

#loadingMessage {
  margin: 0;
  color: var(--text);
  font-size: 0.92rem;
  text-align: center;
}

.app-shell[data-state="ready"] .loading-overlay {
  opacity: 0;
  pointer-events: none;
}

.app-shell[data-state="error"] .loading-panel {
  border-color: rgba(255, 143, 159, 0.3);
}

.noscript-banner {
  position: fixed;
  inset: auto 12px 12px;
  padding: 14px 16px;
  color: var(--text);
  background: rgba(145, 18, 42, 0.9);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 960px) {
  :root {
    --radius-inner: 132px;
    --radius-middle: 214px;
    --radius-outer: 300px;
    --card-width: clamp(176px, 42vw, 244px);
    --node-width: min(31vw, 110px);
  }
}

@media (max-width: 700px) {
  :root {
    --radius-inner: 114px;
    --radius-middle: 188px;
    --radius-outer: 260px;
    --card-width: min(46vw, 176px);
    --node-width: min(30vw, 100px);
  }

  .hud {
    left: max(20px, env(safe-area-inset-left));
    right: max(20px, env(safe-area-inset-right));
    top: max(18px, env(safe-area-inset-top));
    gap: 14px;
  }

  .nav-row {
    gap: 14px;
  }

  .search-shell[data-open="true"] .search-input-wrap {
    width: min(64vw, 236px);
  }

  .center-wrap {
    top: 55%;
  }

  .center-card {
    padding: 14px 14px 13px;
    border-radius: 12px;
  }

  .title {
    font-size: 1rem;
  }

  .favorites-backdrop {
    display: none;
  }

  .favorites-panel {
    inset: 0;
    width: auto;
    padding:
      max(calc(env(safe-area-inset-top) + 72px), 72px)
      max(12px, env(safe-area-inset-right))
      max(12px, env(safe-area-inset-bottom))
      max(12px, env(safe-area-inset-left));
    border: 0;
    border-radius: 0;
    background: rgba(7, 10, 20, 0.97);
    box-shadow: none;
  }

  .search-panel {
    top: max(calc(env(safe-area-inset-top) + 86px), 86px);
    left: max(12px, env(safe-area-inset-left));
    right: max(12px, env(safe-area-inset-right));
    bottom: max(12px, env(safe-area-inset-bottom));
    border: 0;
    width: auto;
    border-radius: 16px;
    background: rgba(7, 10, 20, 0.97);
    box-shadow: none;
  }

  .favorites-list {
    gap: 10px;
    padding-right: 0;
  }

  .search-results {
    gap: 10px;
    padding: 0;
  }

  .saved-card-head {
    padding: 12px 12px 9px;
  }

  .saved-card-link {
    padding: 0 12px 12px;
  }

  .search-result-item {
    min-height: 62px;
    padding: 14px 16px;
  }

  .helper-copy,
  .ing {
    font-size: 0.82rem;
  }

  .saved-card {
    border-radius: 12px;
  }

  .move-node {
    min-height: 34px;
    border-radius: 10px;
    padding: 8px 9px 8px;
  }

  .move-node .name {
    font-size: 0.68rem;
  }
}