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

:root {
  --bg-shell: #a7dbd8;
  --panel: #f8f8f8;
  --sidebar: #fdfd96;
  --header: #50a2ff;
  --toolbar: lightcoral;
  --accent: #05a4de;
  --ink: #000;
  --muted: #555;
  --button: #e3dff2;
  --cyan: #7df9ff;
  --danger: #ff6b6b;
  --shadow: 6px 6px 0 #000;
}

html,
body {
  height: 100%;
  margin: 0;
}

body {
  font-family: "JetBrains Mono", monospace;
  font-weight: 900;
  overflow: hidden;
  background: #111;
  color: var(--ink);
}

button {
  font: inherit;
}

.app-shell {
  height: 100dvh;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  padding: 0.45rem;
  background: var(--bg-shell);
  border: 3px solid var(--ink);
}

.app-top {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.3rem 0.55rem;
  background: var(--header);
  border: 2px solid var(--ink);
  line-height: 1.2;
}

.app-header-title {
  font-size: clamp(0.92rem, 1.6vw, 1.08rem);
}

.controls-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
  padding: 0.35rem;
  background: var(--toolbar);
  border: 2px solid var(--ink);
}

.graph-button {
  border: 3px solid var(--ink);
  background: var(--button);
  padding: 0.24rem 0.58rem;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.12s ease, color 0.12s ease;
  width: fit-content;
  font-size: 0.8rem;
}

.graph-button:hover {
  transform: translate(-2px, -2px);
  background: var(--accent);
  color: #fff;
}

.workspace-shell {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  padding: 0.5rem;
  border: 2px solid var(--ink);
  background: var(--panel);
  overflow: hidden;
}

.count-strip {
  font-size: 0.68rem;
  color: #333;
}

.content-scroll {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding-right: 0.25rem;
}

.content-scroll::-webkit-scrollbar {
  width: 10px;
}

.content-scroll::-webkit-scrollbar-thumb {
  background: #000;
  border: 2px solid var(--panel);
}

.section {
  margin-bottom: 0.8rem;
}

.section:last-child {
  margin-bottom: 0;
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.45rem;
  padding-bottom: 0.22rem;
  border-bottom: 2px solid var(--ink);
  font-size: 0.8rem;
}

.section-heading span {
  font-size: 0.64rem;
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 0.6rem;
}

.config-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100%;
  background: #fffdf0;
  border: 2px solid var(--ink);
  transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
  animation: card-in 0.22s ease both;
}

.config-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 4px 4px 0 var(--ink);
}

.config-card.is-loading {
  opacity: 0.65;
  pointer-events: none;
}

@keyframes card-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card-del-btn {
  position: absolute;
  top: 0.35rem;
  right: 0.35rem;
  width: 1.5rem;
  height: 1.5rem;
  border: 2px solid var(--ink);
  background: var(--danger);
  cursor: pointer;
  z-index: 2;
  font-size: 0.72rem;
}

.card-thumb {
  height: 150px;
  border-bottom: 2px solid var(--ink);
  background: #dffcff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.3rem;
  cursor: pointer;
}

.card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border: 1px solid var(--ink);
  background: #fff;
}

.no-thumb {
  font-size: 0.64rem;
  color: var(--muted);
  text-align: center;
}

.card-body {
  display: flex;
  flex-direction: column;
  gap: 0.28rem;
  padding: 0.52rem;
  flex: 1;
}

.card-name-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.card-name {
  font-size: 0.76rem;
  line-height: 1.22;
  overflow-wrap: anywhere;
  flex: 1;
}

.solve-btn {
  border: 2px solid var(--ink);
  background: var(--button);
  padding: 0.2rem 0.5rem;
  cursor: pointer;
  font-size: 0.65rem;
  white-space: nowrap;
}

.solve-btn:hover {
  background: var(--accent);
  color: #fff;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.24rem;
  color: var(--muted);
  font-size: 0.6rem;
}

.meta-pill {
  border: 1px solid var(--ink);
  background: #fff;
  padding: 0.12rem 0.28rem;
}


.empty-state {
  padding: 1.3rem 0.8rem;
  text-align: center;
  border: 2px dashed var(--ink);
  background: #fff;
  font-size: 0.72rem;
}

.empty-state a {
  color: inherit;
}

.section-divider {
  height: 0;
  margin: 0.7rem 0 0.85rem;
  border: 0;
  border-top: 2px solid var(--ink);
}

#toast {
  position: fixed;
  left: 50%;
  bottom: 1.2rem;
  transform: translateX(-50%) translateY(60px);
  padding: 0.48rem 0.82rem;
  border: 2px solid var(--cyan);
  background: #111;
  color: #fff;
  font-size: 0.7rem;
  opacity: 0;
  pointer-events: none;
  transition: transform 0.2s ease, opacity 0.2s ease;
  z-index: 999;
}

#toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (max-width: 720px) {
  body {
    overflow: auto;
  }

  .app-shell {
    height: auto;
    min-height: 100dvh;
  }

  .workspace-shell {
    overflow: visible;
  }

  .content-scroll {
    overflow: visible;
    padding-right: 0;
  }
}