/* ============================================================
   Smart Price Calculator — Frontend Styles
   Design: Industrial-utility, precise, premium
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Syne:wght@600;700;800&family=Inter:wght@400;500;600&display=swap');

:root {
  --spc-bg:          #0f0f13;
  --spc-surface:     #18181f;
  --spc-surface-2:   #22222c;
  --spc-border:      rgba(255,255,255,0.08);
  --spc-border-focus:rgba(139,92,246,0.6);
  --spc-accent:      #8b5cf6;
  --spc-accent-glow: rgba(139,92,246,0.25);
  --spc-accent-2:    #06d6a0;
  --spc-text:        #f4f4f8;
  --spc-muted:       #8b8b9e;
  --spc-warning:     #f59e0b;
  --spc-radius:      12px;
  --spc-radius-sm:   8px;
  --spc-transition:  0.22s cubic-bezier(.4,0,.2,1);
}

/* ── Wrapper ─────────────────────────────────────────────── */
.spc-calculator {
  font-family: 'Inter', sans-serif;
  background: var(--spc-bg);
  border: 1px solid var(--spc-border);
  border-radius: 20px;
  padding: 0;
  margin: 32px 0;
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(139,92,246,.12),
    0 24px 64px rgba(0,0,0,.45);
  color: var(--spc-text);
  position: relative;
}

.spc-calculator::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 40% at 50% 0%, rgba(139,92,246,.08) 0%, transparent 70%);
  pointer-events: none;
}

/* ── Header ──────────────────────────────────────────────── */
.spc-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 22px 28px 18px;
  border-bottom: 1px solid var(--spc-border);
  position: relative;
}

.spc-header-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #7c3aed, #06d6a0);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
  box-shadow: 0 4px 14px rgba(139,92,246,.4);
}

.spc-header-text h3 {
  font-family: 'Syne', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--spc-text);
  margin: 0 0 2px;
  letter-spacing: -.01em;
}

.spc-header-text p {
  font-size: 12px;
  color: var(--spc-muted);
  margin: 0;
  font-family: 'DM Mono', monospace;
}

.spc-service-badge {
  margin-left: auto;
  background: var(--spc-surface-2);
  border: 1px solid var(--spc-border);
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 11px;
  font-weight: 600;
  color: var(--spc-accent);
  font-family: 'DM Mono', monospace;
  text-transform: uppercase;
  letter-spacing: .06em;
}

/* ── Body ────────────────────────────────────────────────── */
.spc-body {
  padding: 24px 28px;
  display: grid;
  gap: 22px;
}

/* ── Field group ─────────────────────────────────────────── */
.spc-field {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.spc-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--spc-muted);
  text-transform: uppercase;
  letter-spacing: .08em;
  font-family: 'DM Mono', monospace;
}

.spc-label-icon {
  width: 18px;
  height: 18px;
  background: var(--spc-surface-2);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
}

/* ── Select ──────────────────────────────────────────────── */
.spc-select-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 8px;
}

.spc-option {
  background: var(--spc-surface);
  border: 1px solid var(--spc-border);
  border-radius: var(--spc-radius-sm);
  padding: 10px 8px;
  text-align: center;
  cursor: pointer;
  transition: var(--spc-transition);
  font-size: 12px;
  color: var(--spc-muted);
  font-weight: 500;
  user-select: none;
  position: relative;
  overflow: hidden;
}

.spc-option::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--spc-accent), #06d6a0);
  opacity: 0;
  transition: opacity var(--spc-transition);
}

.spc-option:hover {
  border-color: rgba(139,92,246,.4);
  color: var(--spc-text);
  transform: translateY(-1px);
}

.spc-option.active {
  border-color: var(--spc-accent);
  color: var(--spc-text);
  background: rgba(139,92,246,.12);
  box-shadow: 0 0 0 1px var(--spc-accent), 0 4px 12px var(--spc-accent-glow);
}

.spc-option.active .spc-opt-check {
  opacity: 1;
  transform: scale(1);
}

.spc-opt-emoji { font-size: 18px; display: block; margin-bottom: 4px; }
.spc-opt-label { display: block; font-size: 11px; line-height: 1.3; }

.spc-opt-check {
  position: absolute;
  top: 5px;
  right: 5px;
  width: 14px;
  height: 14px;
  background: var(--spc-accent);
  border-radius: 50%;
  opacity: 0;
  transform: scale(.5);
  transition: var(--spc-transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.spc-opt-check::after {
  content: '✓';
  font-size: 8px;
  color: #fff;
  font-weight: 700;
}

/* ── Complexity Slider ───────────────────────────────────── */
.spc-slider-wrap {
  position: relative;
  padding: 0 4px;
}

.spc-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: var(--spc-surface-2);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
  position: relative;
}

.spc-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, #8b5cf6, #06d6a0);
  cursor: pointer;
  box-shadow: 0 0 0 3px rgba(139,92,246,.25), 0 4px 12px rgba(0,0,0,.4);
  transition: transform var(--spc-transition), box-shadow var(--spc-transition);
}

.spc-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
  box-shadow: 0 0 0 5px rgba(139,92,246,.35), 0 4px 16px rgba(0,0,0,.5);
}

.spc-slider::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, #8b5cf6, #06d6a0);
  cursor: pointer;
  border: none;
  box-shadow: 0 0 0 3px rgba(139,92,246,.25);
}

.spc-slider-track-fill {
  position: absolute;
  left: 4px;
  top: 50%;
  transform: translateY(-50%);
  height: 6px;
  background: linear-gradient(90deg, #8b5cf6, #06d6a0);
  border-radius: 3px;
  pointer-events: none;
  transition: width var(--spc-transition);
}

.spc-slider-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
}

.spc-slider-labels span {
  font-size: 10px;
  color: var(--spc-muted);
  font-family: 'DM Mono', monospace;
  text-align: center;
  flex: 1;
}

.spc-slider-labels span.current {
  color: var(--spc-accent);
  font-weight: 600;
}

.spc-complexity-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--spc-surface-2);
  border: 1px solid var(--spc-border);
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 12px;
  color: var(--spc-text);
  font-family: 'DM Mono', monospace;
  transition: var(--spc-transition);
}

.spc-complexity-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--spc-accent);
  box-shadow: 0 0 6px var(--spc-accent);
}

/* ── Add-ons (toggle pills) ──────────────────────────────── */
.spc-addons {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.spc-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--spc-surface);
  border: 1px solid var(--spc-border);
  border-radius: 40px;
  padding: 9px 16px;
  cursor: pointer;
  transition: var(--spc-transition);
  font-size: 13px;
  color: var(--spc-muted);
  user-select: none;
  font-weight: 500;
}

.spc-toggle input { display: none; }

.spc-toggle:hover {
  border-color: rgba(139,92,246,.4);
  color: var(--spc-text);
}

.spc-toggle.checked {
  background: rgba(139,92,246,.12);
  border-color: var(--spc-accent);
  color: var(--spc-text);
  box-shadow: 0 0 0 1px var(--spc-accent);
}

.spc-toggle-knob {
  width: 28px;
  height: 16px;
  background: var(--spc-surface-2);
  border-radius: 8px;
  position: relative;
  transition: background var(--spc-transition);
  flex-shrink: 0;
}

.spc-toggle-knob::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--spc-muted);
  transition: transform var(--spc-transition), background var(--spc-transition);
}

.spc-toggle.checked .spc-toggle-knob { background: rgba(139,92,246,.3); }
.spc-toggle.checked .spc-toggle-knob::after {
  transform: translateX(12px);
  background: var(--spc-accent);
}

.spc-toggle-price {
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  color: var(--spc-accent-2);
  font-weight: 500;
}

/* ── Price Output ─────────────────────────────────────────── */
.spc-price-panel {
  background: var(--spc-surface);
  border: 1px solid var(--spc-border);
  border-radius: var(--spc-radius);
  overflow: hidden;
  transition: border-color var(--spc-transition);
}

.spc-price-panel:hover { border-color: rgba(139,92,246,.3); }

.spc-price-main {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.spc-price-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--spc-muted);
  text-transform: uppercase;
  letter-spacing: .1em;
  font-family: 'DM Mono', monospace;
  margin-bottom: 4px;
}

.spc-price-display {
  font-family: 'Syne', sans-serif;
  font-size: 42px;
  font-weight: 800;
  background: linear-gradient(135deg, #f4f4f8 0%, #8b5cf6 60%, #06d6a0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  transition: transform var(--spc-transition);
}

.spc-price-display.animating {
  transform: scale(1.04);
}

.spc-price-change {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-family: 'DM Mono', monospace;
  padding: 3px 8px;
  border-radius: 20px;
  margin-top: 4px;
}

.spc-price-change.up   { color: #f59e0b; background: rgba(245,158,11,.1); }
.spc-price-change.down { color: #06d6a0; background: rgba(6,214,160,.1); }
.spc-price-change.same { display: none; }

.spc-price-graph {
  flex-shrink: 0;
  position: relative;
  width: 80px;
  height: 44px;
}

.spc-price-graph svg { width: 100%; height: 100%; }

/* Breakdown */
.spc-breakdown {
  border-top: 1px solid var(--spc-border);
  padding: 16px 24px;
}

.spc-breakdown-title {
  font-size: 10px;
  color: var(--spc-muted);
  text-transform: uppercase;
  letter-spacing: .1em;
  font-family: 'DM Mono', monospace;
  margin-bottom: 10px;
}

.spc-breakdown-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px 0;
  font-size: 12px;
  color: var(--spc-muted);
  border-bottom: 1px solid rgba(255,255,255,.03);
}

.spc-breakdown-row:last-child { border-bottom: none; }

.spc-breakdown-row .spc-br-key { color: var(--spc-text); opacity: .7; }
.spc-breakdown-row .spc-br-val {
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  color: var(--spc-text);
}

.spc-breakdown-row .spc-br-val.positive { color: #f59e0b; }
.spc-breakdown-row .spc-br-val.negative { color: var(--spc-accent-2); }

/* ── Footer / CTA ─────────────────────────────────────────── */
.spc-footer {
  padding: 0 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.spc-cta {
  width: 100%;
  background: linear-gradient(135deg, #7c3aed 0%, #5b21b6 100%);
  border: none;
  border-radius: var(--spc-radius);
  color: #fff;
  font-family: 'Syne', sans-serif;
  font-size: 15px;
  font-weight: 700;
  padding: 16px 32px;
  cursor: pointer;
  transition: var(--spc-transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  letter-spacing: .02em;
  box-shadow: 0 4px 20px rgba(124,58,237,.4);
  position: relative;
  overflow: hidden;
}

.spc-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,.12) 0%, transparent 50%);
}

.spc-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(124,58,237,.55);
}

.spc-cta:active { transform: translateY(0); }

.spc-cta.loading { pointer-events: none; opacity: .7; }
.spc-cta .spc-cta-icon { font-size: 18px; }

.spc-disclaimer {
  text-align: center;
  font-size: 11px;
  color: var(--spc-muted);
  font-style: italic;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

/* ── Divider ─────────────────────────────────────────────── */
.spc-divider {
  height: 1px;
  background: var(--spc-border);
  margin: 0;
}

/* ── Pulse animation ─────────────────────────────────────── */
@keyframes spc-pulse {
  0%   { box-shadow: 0 0 0 0 var(--spc-accent-glow); }
  70%  { box-shadow: 0 0 0 8px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

.spc-price-panel.updating { animation: spc-pulse .5s ease-out; }

/* ── Skeleton loading ────────────────────────────────────── */
@keyframes spc-shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.spc-skeleton {
  background: linear-gradient(90deg, var(--spc-surface) 25%, var(--spc-surface-2) 50%, var(--spc-surface) 75%);
  background-size: 200% 100%;
  animation: spc-shimmer 1.5s infinite;
  border-radius: 4px;
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 600px) {
  .spc-body { padding: 18px 18px; }
  .spc-footer { padding: 0 18px 18px; }
  .spc-header { padding: 16px 18px; }
  .spc-price-display { font-size: 32px; }
  .spc-select-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ── Light mode override (optional — auto-detects system) ── */
@media (prefers-color-scheme: light) {
  .spc-calculator {
    --spc-bg:        #fafafa;
    --spc-surface:   #f4f4f8;
    --spc-surface-2: #eeeef5;
    --spc-border:    rgba(0,0,0,0.08);
    --spc-text:      #1a1a2e;
    --spc-muted:     #6b6b80;
  }

  .spc-price-display {
    background: linear-gradient(135deg, #1a1a2e 0%, #7c3aed 60%, #059669 100%);
    -webkit-background-clip: text;
    background-clip: text;
  }
}