/* calculator.css — Calculate Your Utility Hack + sticky mobile CTA + scroll animations */

/* ============ SECTION SHELL ============ */
.calc { position: relative; overflow: hidden; padding-top: 100px; padding-bottom: 120px; }
.calc-grid-bg {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--hairline) 1px, transparent 1px),
    linear-gradient(90deg, var(--hairline) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 75% 60% at 50% 30%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 75% 60% at 50% 30%, #000 30%, transparent 80%);
  opacity: 0.28;
  pointer-events: none;
  z-index: 0;
}
.calc-container { position: relative; z-index: 1; }

.calc-status-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 var(--accent-glow);
  animation: pulse-dot 1.6s ease-in-out infinite;
  display: inline-block;
}

/* ============ SHELL (glass card) ============ */
.calc-shell {
  position: relative;
  border: 1px solid var(--hairline);
  background:
    linear-gradient(180deg, rgba(34,197,94,0.04) 0%, rgba(15,23,19,0.5) 30%, rgba(7,11,9,0.55) 100%);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-radius: 14px;
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(34,197,94,0.06),
    0 30px 80px -30px rgba(0,0,0,0.7),
    0 0 80px -30px var(--accent-glow);
}
.calc-shell::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(700px 300px at 20% 0%, var(--accent-halo), transparent 70%);
  opacity: 0.7;
}

.calc-hud {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 22px;
  background: rgba(34,197,94,0.06);
  border-bottom: 1px solid var(--hairline);
  position: relative;
}
.calc-hud-l { color: var(--accent); letter-spacing: 0.2em; display: flex; align-items: center; gap: 10px; font-size: 11px; }
.calc-hud-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); animation: pulse-dot 1.6s ease-in-out infinite; }
.calc-hud-r { display: flex; gap: 8px; }
.calc-hud-tag {
  padding: 3px 8px;
  border: 1px solid var(--hairline);
  color: var(--text-dim);
  letter-spacing: 0.18em;
  font-size: 9px;
  border-radius: 3px;
}
.calc-hud-tag:last-child { color: var(--accent); border-color: var(--accent); background: var(--accent-halo); }

/* ============ GRID ============ */
.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 0;
  position: relative;
}
.calc-grid > * { padding: 32px; }
.calc-inputs { border-right: 1px solid var(--hairline); display: flex; flex-direction: column; gap: 22px; position: relative; }
.calc-outputs { display: flex; flex-direction: column; gap: 20px; background: linear-gradient(180deg, rgba(0,0,0,0.15), transparent); position: relative; }
@media (max-width: 900px) {
  .calc-grid { grid-template-columns: 1fr; }
  .calc-inputs { border-right: none; border-bottom: 1px solid var(--hairline); }
}

/* ============ FIELDS ============ */
.calc-field { display: flex; flex-direction: column; gap: 10px; }
.calc-field.compact { gap: 6px; }
.calc-field-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.calc-field-head label { color: var(--text-dim); letter-spacing: 0.16em; font-size: 10px; text-transform: uppercase; }
.calc-field-v { color: var(--text); font-size: 18px; letter-spacing: -0.01em; transition: color 0.2s; }
.calc-field-v.accent { color: var(--accent); text-shadow: 0 0 18px var(--accent-glow); }
.calc-field.accent .calc-slider::-webkit-slider-runnable-track { background: linear-gradient(to right, var(--accent) var(--pct), rgba(34,197,94,0.12) var(--pct)); }
.calc-field-hint { color: var(--text-faint); letter-spacing: 0.1em; font-size: 9px; }

/* Range slider */
.calc-slider-wrap { position: relative; padding: 6px 0; }
.calc-slider {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 28px; background: transparent;
  outline: none; cursor: grab;
}
.calc-slider:active { cursor: grabbing; }
.calc-slider::-webkit-slider-runnable-track {
  height: 4px; border-radius: 2px;
  background: linear-gradient(to right, var(--accent) var(--pct), rgba(255,255,255,0.08) var(--pct));
  border: none;
}
.calc-slider::-moz-range-track {
  height: 4px; border-radius: 2px;
  background: linear-gradient(to right, var(--accent) var(--pct), rgba(255,255,255,0.08) var(--pct));
}
.calc-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px; border-radius: 50%;
  background: #0b1310; border: 2px solid var(--accent);
  margin-top: -7px;
  box-shadow: 0 0 0 0 var(--accent-glow), 0 4px 14px -4px var(--accent-glow);
  transition: box-shadow 0.2s, transform 0.15s;
}
.calc-slider::-webkit-slider-thumb:hover { box-shadow: 0 0 0 6px var(--accent-halo), 0 4px 14px -2px var(--accent-glow); transform: scale(1.08); }
.calc-slider::-moz-range-thumb {
  width: 18px; height: 18px; border-radius: 50%;
  background: #0b1310; border: 2px solid var(--accent);
  box-shadow: 0 0 0 0 var(--accent-glow);
}

.calc-rates { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; padding-top: 10px; border-top: 1px dashed var(--hairline); }
@media (max-width: 520px) { .calc-rates { grid-template-columns: 1fr; } }

/* Segmented control */
.calc-segment { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.calc-seg-opt {
  padding: 11px 8px;
  background: rgba(10,17,14,0.5);
  border: 1px solid var(--hairline);
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 4px;
  transition: all 0.18s;
}
.calc-seg-opt:hover { color: var(--text); border-color: rgba(34,197,94,0.4); }
.calc-seg-opt.on { color: var(--accent); border-color: var(--accent); background: var(--accent-halo); box-shadow: inset 0 0 24px -8px var(--accent-halo); }
@media (max-width: 520px) { .calc-segment { grid-template-columns: 1fr; } }

.calc-select-wrap select {
  background: rgba(10,17,14,0.6);
  border: 1px solid var(--hairline);
  color: var(--text);
  padding: 12px 36px 12px 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  width: 100%;
  appearance: none; -webkit-appearance: none;
  border-radius: 4px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.calc-select-wrap select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-halo); }

/* ============ OUTPUTS ============ */
.calc-readout-head {
  display: flex; justify-content: space-between; align-items: center;
  color: var(--accent);
  letter-spacing: 0.18em;
  font-size: 11px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--hairline);
}
.calc-readout-meta { color: var(--text-dim); letter-spacing: 0.12em; font-size: 10px; }

.calc-tiles {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.calc-tile {
  background: rgba(10,17,14,0.55);
  border: 1px solid var(--hairline);
  padding: 18px 18px;
  border-radius: 6px;
  display: flex; flex-direction: column; gap: 6px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.25s, background 0.25s;
}
.calc-tile:hover { border-color: rgba(34,197,94,0.4); }
.calc-tile.lg { grid-column: span 2; padding: 22px 22px; }
.calc-tile.up .calc-tile-v { color: var(--accent); text-shadow: 0 0 22px var(--accent-glow); }
.calc-tile.glow { background: linear-gradient(160deg, rgba(34,197,94,0.10), rgba(10,17,14,0.6)); border-color: rgba(34,197,94,0.35); }
.calc-tile.glow::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(400px 120px at 0% 0%, var(--accent-halo), transparent 60%);
  pointer-events: none;
}
.calc-tile-l { color: var(--text-dim); letter-spacing: 0.14em; font-size: 10px; }
.calc-tile-v { color: var(--text); font-size: 30px; letter-spacing: -0.025em; font-variant-numeric: tabular-nums; }
.calc-tile.lg .calc-tile-v { font-size: 42px; }
.calc-tile-meta { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.calc-tile-note { color: var(--text-faint); letter-spacing: 0.08em; font-size: 9px; }
.calc-tile-delta { color: var(--accent); letter-spacing: 0.1em; font-size: 10px; padding: 2px 8px; border: 1px solid var(--accent); border-radius: 3px; background: var(--accent-halo); }

.calc-tile-battery { grid-column: span 2; display: grid; grid-template-columns: 1fr auto; gap: 14px; align-items: center; }
.calc-tile-battery .calc-tile-l { grid-column: 1 / -1; }
.calc-battery-msg { color: var(--text); font-size: 14px; line-height: 1.5; max-width: 360px; }
.calc-tile-spark { opacity: 0.95; }

@media (max-width: 520px) {
  .calc-tiles { grid-template-columns: 1fr; }
  .calc-tile.lg, .calc-tile-battery { grid-column: span 1; }
  .calc-tile-battery { grid-template-columns: 1fr; }
  .calc-tile-spark { justify-self: start; }
  .calc-tile.lg .calc-tile-v { font-size: 36px; }
}

/* ============ CTA + DISCLAIMER ============ */
.calc-cta { position: relative; justify-content: center; width: 100%; padding: 16px 22px; margin-top: 6px; overflow: hidden; }
.calc-cta-pulse {
  position: absolute; inset: 0;
  border-radius: inherit;
  pointer-events: none;
  box-shadow: 0 0 0 0 var(--accent-glow);
  animation: cta-pulse 2.6s ease-out infinite;
}
@keyframes cta-pulse {
  0%   { box-shadow: 0 0 0 0 var(--accent-glow); }
  70%  { box-shadow: 0 0 0 14px rgba(34,197,94,0); }
  100% { box-shadow: 0 0 0 0 rgba(34,197,94,0); }
}
@media (prefers-reduced-motion: reduce) {
  .calc-cta-pulse { animation: none; }
}

.calc-disclaimer { color: var(--text-faint); letter-spacing: 0.08em; font-size: 10px; line-height: 1.6; text-align: center; }

/* ============ STICKY MOBILE CTA ============ */
.sticky-cta {
  position: fixed;
  left: 12px; right: 12px; bottom: 12px;
  z-index: 90;
  display: none;
  gap: 8px;
  padding: 8px;
  background: rgba(7,11,9,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--hairline);
  border-radius: 999px;
  box-shadow: 0 16px 40px -14px rgba(0,0,0,0.7), 0 0 30px -10px var(--accent-glow);
  transform: translateY(120%);
  opacity: 0;
  transition: transform 360ms cubic-bezier(.2,.7,.2,1), opacity 240ms;
}
.sticky-cta.show { transform: translateY(0); opacity: 1; }
@media (max-width: 760px) { .sticky-cta { display: flex; } }
.sticky-cta-btn {
  flex: 1;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 14px;
  font-family: var(--font-display);
  font-size: 12px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  border-radius: 999px;
  transition: transform 0.15s;
}
.sticky-cta-btn:active { transform: scale(0.97); }
.sticky-cta-btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--hairline); }
.sticky-cta-btn.primary { background: var(--accent); color: #051008; box-shadow: 0 0 0 0 var(--accent-glow); animation: cta-pulse 2.6s ease-out infinite; }
@media (prefers-reduced-motion: reduce) { .sticky-cta-btn.primary { animation: none; } }

/* Push footer up so sticky CTA doesn't overlap final content on mobile */
@media (max-width: 760px) {
  .footer { padding-bottom: 90px; }
}

/* ============ GLOBAL SCROLL POLISH ============ */
/* gentle parallax for the hero grid backdrop */
.hero-grid-bg { will-change: transform; transition: transform 200ms linear; }

/* CTA pulse for primary anchor used in hero/program */
.btn-primary { position: relative; }
.btn-primary.cta-soft-pulse { animation: btn-soft-pulse 3.4s ease-in-out infinite; }
@keyframes btn-soft-pulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--accent-glow), 0 8px 24px -8px rgba(34,197,94,0.4); }
  50%      { box-shadow: 0 0 0 8px rgba(34,197,94,0), 0 10px 30px -8px rgba(34,197,94,0.55); }
}
@media (prefers-reduced-motion: reduce) {
  .btn-primary.cta-soft-pulse { animation: none; }
}

/* Reveal staggered helpers */
.reveal-stagger > * { transition-delay: calc(var(--idx, 0) * 90ms); }

/* Global scroll-reveal */
.reveal {
  opacity: 0;
  transform: translate3d(0, 16px, 0);
  transition:
    opacity 700ms cubic-bezier(.2,.7,.2,1) var(--reveal-d, 0ms),
    transform 700ms cubic-bezier(.2,.7,.2,1) var(--reveal-d, 0ms);
  will-change: opacity, transform;
}
.reveal.is-in {
  opacity: 1;
  transform: none;
  will-change: auto;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}