:root {
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--surface-base, #0f141f);
  color: var(--text-primary, #cfd4dc);
  font-family: var(--font-family-sans, "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
}

button {
  border: none;
  background: none;
  font: inherit;
  color: inherit;
}

.loading-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  max-width: 520px;
  width: 100%;
  text-align: center;
  animation: fadeIn 0.4s ease-out;
}

.loading-logo {
  width: 180px;
  height: auto;
  filter: drop-shadow(0 20px 60px rgba(0, 0, 0, 0.45));
  animation: logoPulse 3s ease-in-out infinite;
}

.loading-heading {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.loading-title {
  font-size: 2.8rem;
  font-weight: 600;
  margin: 0;
  color: var(--text-primary, #f4f6fb);
}

.loading-status {
  margin: 0;
  font-size: 1rem;
  color: var(--text-muted, #aeb3c4);
  animation: fadeIn 0.3s ease-out;
}

.loading-card {
  margin-top: 12px;
  width: 100%;
  max-width: 420px;
  padding: 22px;
  border-radius: 18px;
  background: rgba(13, 16, 24, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(108, 227, 255, 0.05);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.loading-card:hover {
  border-color: rgba(108, 227, 255, 0.15);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(108, 227, 255, 0.1);
}

.loading-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  font-size: 0.95rem;
}

.spinner {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.18);
  border-top-color: #6ce3ff;
  animation: spin 0.9s cubic-bezier(0.5, 0, 0.5, 1) infinite;
  box-shadow: 0 0 10px rgba(108, 227, 255, 0.3);
}

.phrase-controls {
  margin-top: 12px;
  font-size: 0.9rem;
  color: var(--text-muted, #8f96a9);
}

.phrase-controls button {
  color: #8fb5ff;
  cursor: pointer;
  padding: 4px 12px;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.phrase-controls button:hover {
  background: rgba(143, 181, 255, 0.1);
  transform: translateY(-1px);
}

.phrase-controls button:active {
  transform: translateY(0);
}

.loading-error {
  margin-top: 12px;
  padding: 12px 16px;
  background: rgba(255, 94, 109, 0.1);
  border: 1px solid rgba(255, 94, 109, 0.2);
  border-radius: 8px;
  color: #ff9ea9;
  font-size: 0.9rem;
  animation: fadeIn 0.3s ease-out;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes logoPulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.02);
  }
}
