:root {
  color-scheme: dark;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: #05040d;
  color: #f5f7fb;
}

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

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 20% 20%, rgba(139, 92, 246, 0.35), transparent 55%),
    radial-gradient(circle at 80% 15%, rgba(244, 114, 182, 0.3), transparent 50%),
    #05040d;
  padding: clamp(1.5rem, 3vw, 3rem);
}

.surface {
  width: min(640px, 100%);
  display: grid;
  gap: clamp(1.5rem, 3vw, 2rem);
  padding: clamp(1.75rem, 4vw, 2.5rem);
  border-radius: 28px;
  background: rgba(10, 9, 24, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 45px 90px rgba(5, 4, 13, 0.65);
  backdrop-filter: blur(26px);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  letter-spacing: 0.12em;
  text-transform: lowercase;
}

.quota {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
}

.workspace {
  display: grid;
  gap: 1.25rem;
}

.panel {
  display: grid;
  gap: 1.25rem;
}

.slots {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(72px, 1fr));
  gap: clamp(0.6rem, 2vw, 1rem);
}

.slot {
  padding: 0px;
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1 / 1;
  border-radius: 18px;
  overflow: hidden;
  background: rgba(15, 14, 32, 0.75);
  border: 1.5px dashed rgba(255, 255, 255, 0.18);
  color: rgba(245, 247, 251, 0.8);
  cursor: pointer;
  transition: transform 0.2s, border-color 0.2s, background 0.2s;
}

.slot:hover {
  transform: translateY(-2px);
  border-color: rgba(245, 247, 251, 0.45);
  background: rgba(26, 24, 54, 0.85);
}

.slot-icon {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  margin-bottom: 0.35rem;
}

.slot span {
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: rgba(245, 247, 251, 0.7);
}

.slot.filled {
  border-style: solid;
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
}

.slot.filled img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
  display: block;
}

.legend {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: rgba(245, 247, 251, 0.6);
}

.link-button {
  border: none;
  background: none;
  color: rgba(245, 247, 251, 0.8);
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  cursor: pointer;
  transition: opacity 0.2s;
}

.link-button:hover {
  opacity: 0.7;
}

.link-button:disabled {
  opacity: 0.3;
  cursor: default;
  pointer-events: none;
}

.slots-empty {
  margin: 0;
  padding: 1.5rem;
  text-align: center;
  font-size: 0.9rem;
  color: rgba(245, 247, 251, 0.55);
}

#submit-btn {
  border: none;
  border-radius: 18px;
  padding: 0.95rem;
  font-weight: 600;
  font-size: 1rem;
  background: linear-gradient(120deg, #8f5bff, #ff5dc3);
  color: #fff;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
}

#submit-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 20px 38px rgba(143, 91, 255, 0.35);
}

#submit-btn:disabled {
  opacity: 0.5;
  cursor: progress;
  transform: none;
  box-shadow: none;
}

.meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(245, 247, 251, 0.5);
}

.status {
  min-height: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.status[data-type="success"] {
  color: #73f3c1;
}

.status[data-type="error"] {
  color: #ff7b9f;
}

@media (max-width: 600px) {
  .surface {
    padding: 1.75rem;
  }

  .preview-grid {
    --cell-size: clamp(44px, 16vw, 60px);
  }

  .meta {
    flex-direction: column;
    align-items: flex-start;
  }
}