.ws-root {
  --ws-accent: #3b82f6;
  --ws-accent-glow: rgba(59, 130, 246, 0.35);
  --ws-success: #22c55e;
  --ws-success-glow: rgba(34, 197, 94, 0.35);
  --ws-warn: #f59e0b;
  --ws-warn-glow: rgba(245, 158, 11, 0.35);
  --ws-danger: #ef4444;
  --ws-danger-glow: rgba(239, 68, 68, 0.35);
  --ws-surface: var(--bg-surface);
  --ws-page: var(--bg-page);
  --ws-text: var(--text-main);
  --ws-muted: var(--text-muted);
  --ws-base: var(--text-base);
  --ws-border: var(--border-color);

  width: 100%;
  padding: 1rem 0;
}

.ws-card {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  background: var(--ws-surface);
  border: 1px solid var(--ws-border);
  border-radius: 28px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 24px -4px rgba(0, 0, 0, 0.08);
}

.ws-stage {
  position: relative;
  padding: 1.5rem;
  border-bottom: 1px solid var(--ws-border);
  overflow: hidden;
}

.ws-stage-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--ws-accent-glow) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  pointer-events: none;
  opacity: 0.5;
  transition: opacity 0.6s ease;
}

.ws-section-label {
  font-size: 0.6rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--ws-accent);
  margin: 0 0 1rem;
  position: relative;
  z-index: 1;
}

.ws-hero {
  text-align: center;
  position: relative;
  z-index: 1;
}

.ws-hero-value {
  font-size: clamp(2.5rem, 8vw, 3.5rem);
  font-weight: 900;
  line-height: 1;
  margin: 0;
  color: var(--ws-base);
  letter-spacing: -0.03em;
}

.ws-hero-unit {
  font-size: clamp(0.9rem, 2.5vw, 1.2rem);
  font-weight: 400;
  color: var(--ws-muted);
}

.ws-hero-label {
  font-size: 0.65rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--ws-muted);
  margin: 0.5rem 0 0;
}

.ws-slider-track {
  position: relative;
  height: 14px;
  border-radius: 999px;
  margin-top: 1.25rem;
  overflow: hidden;
  background: linear-gradient(90deg, #60a5fa, #818cf8, #c084fc, #f472b6, #fb923c, #9ca3af);
}

.ws-slider-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.35);
  width: 0%;
  transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.ws-slider-thumb {
  position: absolute;
  top: 50%;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--ws-accent);
  transform: translate(-50%, -50%);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);
  transition: left 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.ws-unit-system {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  position: relative;
  z-index: 1;
}

.ws-unit-label {
  font-size: 0.6rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ws-muted);
}

.ws-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.ws-fields {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.ws-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.ws-field-label {
  font-size: 0.6rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--ws-muted);
}

.ws-field-row {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
}

.ws-field-input {
  width: 100%;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--ws-text);
  background: transparent;
  border: none;
  border-bottom: 2px solid var(--ws-border);
  padding: 0.2rem 0;
  outline: none;
  transition: border-color 0.2s;
}

.ws-field-input:focus {
  border-color: var(--ws-accent);
}

.ws-field-unit {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--ws-muted);
  white-space: nowrap;
}

.ws-pill-track {
  display: flex;
  background: var(--ws-page);
  border: 1px solid var(--ws-border);
  border-radius: 14px;
  padding: 0.3rem;
  position: relative;
  width: fit-content;
}

.ws-pill-btn {
  flex: 1;
  padding: 0.55rem 0.9rem;
  border-radius: 11px;
  border: none;
  background: transparent;
  color: var(--ws-muted);
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  transition: color 0.25s;
  position: relative;
  z-index: 1;
}

.ws-pill-btn:hover {
  color: var(--ws-text);
}

.ws-pill-btn.ws-active {
  background: var(--ws-accent);
  color: #fff;
}

.ws-pipe {
  background: var(--ws-page);
  border: 1px solid var(--ws-border);
  border-radius: 20px;
  padding: 1.25rem;
  text-align: center;
}

.ws-pipe-visual {
  width: 100%;
  max-width: 200px;
  margin: 0 auto;
}

.ws-pipe-label {
  font-size: 0.65rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--ws-muted);
  margin-top: 0.75rem;
}

.ws-pipe-num {
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--ws-base);
  line-height: 1;
  margin-top: 0.25rem;
}

.ws-pipe-unit {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ws-muted);
}

.ws-salt {
  background: var(--ws-page);
  border: 1px solid var(--ws-border);
  border-radius: 20px;
  padding: 1.25rem;
}

.ws-salt-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.ws-salt-bag {
  aspect-ratio: 3/4;
  border-radius: 6px;
  border: 1px solid var(--ws-border);
  background: var(--ws-surface);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.ws-salt-bag.ws-filled {
  border-color: rgba(59, 130, 246, 0.4);
  position: relative;
}

.ws-salt-bag::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--fill, 0%);
  background: linear-gradient(180deg, rgba(59, 130, 246, 0.35), rgba(59, 130, 246, 0.65));
  border-radius: 0 0 5px 5px;
  transition: height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.ws-salt-bag.ws-filled::after {
  content: '';
  position: absolute;
  inset: 3px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.15);
}

.ws-salt-info {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-top: 1rem;
}

.ws-salt-item {
  text-align: center;
  padding: 0.75rem;
  border-radius: 12px;
  background: var(--ws-surface);
  border: 1px solid var(--ws-border);
}

.ws-salt-num {
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--ws-base);
  line-height: 1;
}

.ws-salt-label {
  font-size: 0.65rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ws-muted);
  margin-top: 0.35rem;
}

.ws-appliances {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.ws-app {
  text-align: center;
  padding: 1rem 0.75rem;
  border-radius: 16px;
  background: var(--ws-page);
  border: 1px solid var(--ws-border);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s ease;
}

.ws-app:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px -8px var(--ws-accent-glow);
}

.ws-app svg {
  width: 28px;
  height: 28px;
  color: var(--ws-accent);
  margin-bottom: 0.5rem;
}

.ws-app-name {
  font-size: 0.7rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ws-muted);
  margin: 0 0 0.5rem;
}

.ws-app-years {
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--ws-base);
  line-height: 1;
}

.ws-app-sub {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--ws-muted);
  margin-top: 0.25rem;
}

.ws-app-saved {
  display: inline-block;
  margin-top: 0.5rem;
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--ws-success);
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.22);
}

@media (max-width: 520px) {
  .ws-card {
    border-radius: 22px;
  }

  .ws-stage {
    padding: 1.25rem 1rem;
  }

  .ws-body {
    padding: 1.25rem 1rem;
    gap: 1.25rem;
  }

  .ws-fields {
    grid-template-columns: 1fr;
    gap: 0.875rem;
  }

  .ws-salt-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .ws-salt-info {
    grid-template-columns: repeat(2, 1fr);
  }

  .ws-appliances {
    grid-template-columns: 1fr;
  }
}