/* ====================================================
   Carbon Saved Visualizer · Solar Yield Heatmap · Testimonials
   · Trust strip · Compare with toggle
   ==================================================== */

/* ----- 1. Carbon Saved ----- */
.carbon {
  position: relative;
  padding: 6rem 0 7rem;
  background:
    radial-gradient(ellipse at 80% 0%, rgba(56, 189, 248, 0.10), transparent 60%),
    radial-gradient(ellipse at 20% 100%, rgba(132, 204, 22, 0.10), transparent 60%),
    linear-gradient(180deg, var(--bg-elev-1) 0%, var(--bg) 100%);
  overflow: hidden;
}
.carbon__intro {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3rem;
  padding: 0 1.5rem;
}
.carbon__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 700; letter-spacing: var(--tracking-display);
  color: var(--heading); margin: 1rem 0; line-height: 1.05;
}
.carbon__title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--sky-light), #84CC16);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.carbon__hero {
  max-width: 920px;
  margin: 0 auto 3rem;
  padding: 2.5rem;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(56, 189, 248, 0.15), transparent 60%),
    rgba(209, 250, 229, 0.12);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border-emerald);
  border-radius: 24px;
  box-shadow: var(--shadow-card-hover);
  text-align: center;
  position: relative;
}
.carbon__big {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 8rem);
  font-weight: 800;
  letter-spacing: -0.06em;
  line-height: 0.95;
  background: linear-gradient(135deg, var(--sky-light) 0%, var(--emerald-bright) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 0 40px rgba(56, 189, 248, 0.45));
  margin: 0 0 0.5rem;
}
.carbon__big-unit {
  font-family: var(--font-mono);
  font-size: 1.2rem; font-weight: 700; color: var(--emerald-dark);
  letter-spacing: 0.18em; text-transform: uppercase;
  margin-left: 10px;
}
.carbon__hero-caption {
  font-size: 1.05rem; color: var(--text-secondary); margin: 0.5rem 0 0;
}

.carbon__split {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.carbon-card {
  padding: 1.75rem;
  background: var(--glass-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  text-align: center;
}
.carbon-card__num {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800; letter-spacing: -0.04em; line-height: 1;
  margin: 0.5rem 0 0.25rem;
}
.carbon-card--cars  .carbon-card__num { color: var(--sky-blue); text-shadow: 0 0 20px rgba(56, 189, 248, 0.50); }
.carbon-card--trees .carbon-card__num { color: #BEF264; text-shadow: 0 0 20px rgba(132, 204, 22, 0.55); }
.carbon-card__label {
  font-size: 0.95rem; color: var(--text-primary); margin: 0; font-weight: 500;
}
.carbon-card__row {
  display: flex; justify-content: center; gap: 4px; flex-wrap: wrap;
  margin: 1.25rem 0 0;
  min-height: 48px;
}
.carbon-card__row svg {
  width: 24px; height: 24px;
  animation: carbonPop 2.6s ease-in-out infinite;
}
.carbon-card--cars  .carbon-card__row svg { color: var(--sky-blue); }
.carbon-card--trees .carbon-card__row svg { color: #84CC16; }
@keyframes carbonPop {
  0%, 100% { opacity: 0.55; transform: scale(0.95); }
  50%      { opacity: 1; transform: scale(1.05); }
}

/* ----- 2. Solar Yield Heatmap ----- */
.heatmap {
  position: relative;
  padding: 6rem 0 7rem;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-elev-1) 100%);
  overflow: hidden;
}
.heatmap__intro {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3rem;
  padding: 0 1.5rem;
}
.heatmap__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 700; letter-spacing: var(--tracking-display);
  color: var(--heading); margin: 1rem 0;
  line-height: 1.05;
}
.heatmap__title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--solar-light), var(--emerald-bright));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.heatmap__board {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem;
  background: rgba(248, 250, 252, 0.75);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  box-shadow: var(--shadow-card);
}
.heatmap__grid {
  display: grid;
  grid-template-columns: 40px 1fr;
  align-items: stretch;
  gap: 8px;
}
.heatmap__months {
  display: grid;
  grid-template-rows: repeat(12, 1fr);
  gap: 2px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}
.heatmap__months span {
  display: flex; align-items: center; justify-content: flex-end;
  padding-right: 4px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.heatmap__cells {
  display: grid;
  grid-template-columns: repeat(31, 1fr);
  grid-template-rows: repeat(12, 1fr);
  gap: 3px;
}
.heatmap__cell {
  aspect-ratio: 1;
  border-radius: 3px;
  background: rgba(15, 23, 42, 0.07);
  position: relative;
  transition: transform 150ms var(--ease-out);
}
.heatmap__cell:hover {
  transform: scale(1.45);
  z-index: 2;
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.6);
}
/* Tooltip on hover */
.heatmap__cell::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 6px); left: 50%; transform: translateX(-50%);
  white-space: nowrap;
  padding: 4px 8px;
  background: #0f172a;
  color: #ffffff;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  border: 1px solid rgba(15, 23, 42, 0.2);
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.18);
  opacity: 0; pointer-events: none;
  transition: opacity 120ms;
}
.heatmap__cell:hover::after { opacity: 1; }

.heatmap__legend {
  display: flex; align-items: center; justify-content: center;
  gap: 8px; margin-top: 1.5rem;
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--text-muted); letter-spacing: 0.1em; text-transform: uppercase;
}
.heatmap__legend-scale {
  display: flex; gap: 2px;
}
.heatmap__legend-scale span {
  width: 14px; height: 14px; border-radius: 3px;
}

/* ----- 3. Testimonials ----- */
.testify {
  position: relative;
  padding: 6rem 0 7rem;
  background: linear-gradient(180deg, var(--bg-elev-1) 0%, var(--bg) 100%);
}
.testify__intro {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3rem;
  padding: 0 1.5rem;
}
.testify__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 700; letter-spacing: var(--tracking-display);
  color: var(--heading); margin: 1rem 0; line-height: 1.05;
}
.testify__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.testify-card {
  padding: 1.75rem;
  background: var(--glass-bg);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  display: flex; flex-direction: column; gap: 1rem;
  transition: all 250ms var(--ease-out);
}
.testify-card:hover {
  transform: translateY(-6px);
  border-color: var(--glass-border-emerald);
  box-shadow: var(--shadow-card-hover);
}
.testify-card__quote {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--heading);
  line-height: 1.4;
  letter-spacing: -0.02em;
  margin: 0;
  position: relative;
  flex: 1;
}
.testify-card__quote::before {
  content: '"';
  position: absolute;
  top: -18px; left: -10px;
  font-size: 4rem;
  color: var(--emerald);
  opacity: 0.35;
  line-height: 1;
  font-family: Georgia, serif;
}
.testify-card__author {
  display: flex; align-items: center; gap: 12px;
  padding-top: 1rem;
  border-top: 1px solid rgba(15, 23, 42, 0.088);
}
.testify-card__avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-family: var(--font-display);
  font-size: 0.95rem; font-weight: 700;
  color: var(--heading);
  letter-spacing: -0.02em;
}
.testify-card__avatar--a { background: linear-gradient(135deg, #34d399, #10B981); }
.testify-card__avatar--b { background: linear-gradient(135deg, #FCD34D, #F59E0B); color: #422006; }
.testify-card__avatar--c { background: linear-gradient(135deg, #38BDF8, #0EA5E9); }
.testify-card__author-name { font-weight: 600; color: var(--heading); font-size: 0.95rem; line-height: 1.2; }
.testify-card__author-meta { font-size: 0.78rem; color: var(--text-secondary); letter-spacing: 0.04em; }

/* ----- 4. Trust strip ----- */
.trust {
  padding: 4rem 0 4.5rem;
  background: var(--bg);
  border-top: 1px solid var(--glass-border);
  border-bottom: 1px solid var(--glass-border);
}
.trust__label {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.72rem; color: var(--text-muted);
  letter-spacing: 0.2em; text-transform: uppercase;
  margin: 0 0 2rem;
}
.trust__row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.25rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.trust__item {
  display: flex; align-items: center; gap: 12px;
  padding: 1rem 1.25rem;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  transition: all 200ms var(--ease-out);
}
.trust__item:hover { border-color: var(--glass-border-emerald); }
.trust__item-icon {
  width: 36px; height: 36px; flex-shrink: 0;
  display: grid; place-items: center;
  border-radius: 10px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: var(--emerald-dark);
}
.trust__item-text { line-height: 1.25; }
.trust__item-text strong { display: block; color: var(--heading); font-size: 0.85rem; font-weight: 600; }
.trust__item-text span   { display: block; color: var(--text-muted); font-size: 0.72rem; letter-spacing: 0.04em; }

/* ----- 5. Compare with toggle ----- */
.compare2 {
  position: relative;
  padding: 6rem 0 7rem;
  background:
    radial-gradient(ellipse at 80% 50%, rgba(16, 185, 129, 0.08), transparent 50%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-elev-1) 100%);
  border-top: 1px solid var(--glass-border);
}
.compare2__layout {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 4rem;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.compare2__copy h2 mark {
  background: transparent; color: var(--emerald-dark);
  text-shadow: 0 0 20px var(--emerald-glow); padding: 0;
}
.compare2__big {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 8vw, 5.5rem);
  font-weight: 900; letter-spacing: -0.05em;
  background: linear-gradient(135deg, var(--emerald-bright), var(--emerald));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  line-height: 1; display: block; margin: 1.5rem 0 0.5rem;
  filter: drop-shadow(0 0 24px rgba(16, 185, 129, 0.40));
}

.compare2__chart-wrap {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  padding: 2rem;
  border-radius: 20px;
  box-shadow: var(--shadow-card);
}
.compare2__toggle {
  display: inline-flex;
  background: rgba(248, 250, 252, 0.65);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  padding: 4px;
  margin-bottom: 1.5rem;
  font-family: var(--font-sans);
}
.compare2__toggle button {
  padding: 8px 18px;
  background: transparent;
  border: 0;
  color: var(--text-secondary);
  font-size: 0.85rem; font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: 999px;
  cursor: pointer;
  transition: all 180ms var(--ease-out);
}
.compare2__toggle button[aria-pressed="true"] {
  background: linear-gradient(135deg, var(--emerald-light), var(--emerald));
  color: var(--heading);
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.40), inset 0 1px 0 rgba(15, 23, 42, 0.15);
}
.compare2__chart-wrap svg { width: 100%; height: auto; }

@media (max-width: 980px) {
  .carbon__split { grid-template-columns: 1fr; }
  .testify__grid { grid-template-columns: 1fr; max-width: 480px; padding: 0 1.5rem; }
  .trust__row { grid-template-columns: repeat(2, 1fr); }
  .compare2__layout { grid-template-columns: 1fr; gap: 2rem; }
}