/* ============================================================
   COMPONENTS.CSS — All BEM Components
   Skymin Design System · skym.in
   ============================================================ */

/* ==========================================================
   BUTTONS
   ========================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all var(--duration-base) var(--ease-out-expo);
  white-space: nowrap;
  min-height: 44px; /* touch target */
}

/* App-like tactile press state */
.btn:active {
  transform: scale(0.96) !important;
  transition-duration: 50ms !important;
}

/* Primary — amber fill */
.btn--primary {
  background: var(--color-accent);
  color: #000;
}
.btn--primary:hover {
  background: var(--color-accent-dim);
  transform: translateY(-1px);
}

/* Outline — amber border, transparent fill */
.btn--outline {
  background: transparent;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
}
.btn--outline:hover {
  background: var(--color-accent-glow);
}

/* Ghost — subtle border, text only */
.btn--ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border: 1.5px solid var(--color-border);
}
.btn--ghost:hover {
  color: var(--color-text-primary);
  border-color: var(--color-text-secondary);
}

/* WhatsApp */
.btn--whatsapp {
  background: #25D366;
  color: #000;
}
.btn--whatsapp:hover {
  background: #1FB857;
  transform: translateY(-1px);
}

/* Large size */
.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

/* Full-width on mobile */
@media (max-width: 639px) {
  .btn--block-mobile {
    width: 100%;
  }
}

/* WhatsApp FAB */
.fab-whatsapp {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 99;
  width: 60px;
  height: 60px;
  background-color: #25D366;
  color: #fff;
  border-radius: var(--radius-pill);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(37, 211, 102, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--duration-base) var(--ease-out-expo);
}

.fab-whatsapp.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.fab-whatsapp:hover {
  background-color: #1FB857;
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
  color: #fff;
}

.fab-whatsapp__icon {
  width: 32px;
  height: 32px;
}

@media (max-width: 639px) {
  .fab-whatsapp {
    bottom: calc(var(--space-6) + 60px); /* Positioned above mobile sticky bar */
    right: var(--space-4);
    width: 52px;
    height: 52px;
  }
  .fab-whatsapp__icon {
    width: 28px;
    height: 28px;
  }
}



/* ==========================================================
   NAVIGATION
   ========================================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  transition: background var(--duration-base) var(--ease-in-out),
              border-color var(--duration-base) var(--ease-in-out);
}

.nav--scrolled {
  background: rgba(8, 8, 8, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}

.nav--menu-open {
  background: transparent !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  border-bottom-color: transparent !important;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  padding-inline: var(--space-5);
  max-width: var(--container-xl);
  margin-inline: auto;
  position: relative;
  z-index: 55;
}

@media (min-width: 1024px) {
  .nav__inner {
    padding-inline: var(--space-12);
    height: 72px;
  }
}

/* Logo / Wordmark */
.nav__logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-xl);
  color: var(--color-text-primary);
  letter-spacing: var(--tracking-tight);
  text-decoration: none;
}

.nav__logo span {
  color: var(--color-accent);
}

/* Desktop links */
.nav__links {
  display: none;
  align-items: center;
  gap: var(--space-8);
}

@media (min-width: 1024px) {
  .nav__links {
    display: flex;
  }
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  transition: color var(--duration-fast) ease;
}

.nav__link:hover {
  color: var(--color-text-primary);
}

/* Nav CTA */
.nav__cta {
  background: var(--color-accent);
  color: #000;
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-pill);
  text-decoration: none;
  transition: background var(--duration-base) var(--ease-out-expo);
  display: none;
}

.nav__cta:hover {
  background: var(--color-accent-dim);
}

@media (min-width: 1024px) {
  .nav__cta {
    display: inline-flex;
  }
}

/* Hamburger */
.nav__hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}

@media (min-width: 1024px) {
  .nav__hamburger {
    display: none;
  }
}

.nav__hamburger-line {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 1px;
  transition: all var(--duration-base) var(--ease-out-expo);
  transform-origin: center;
}

/* Hamburger → X animation */
.nav__hamburger[aria-expanded="true"] .nav__hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__hamburger[aria-expanded="true"] .nav__hamburger-line:nth-child(2) {
  opacity: 0;
}
.nav__hamburger[aria-expanded="true"] .nav__hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile overlay */
.nav__overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 8, 8, 0.98);
  z-index: 49;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  transition: opacity var(--duration-slow) var(--ease-out-expo);
}

.nav__overlay-link {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
  transition: color var(--duration-fast) ease;
}

.nav__overlay-link:hover {
  color: var(--color-accent);
}


/* ==========================================================
   HERO
   ========================================================== */

.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  padding-top: 80px; /* clear fixed nav */
  overflow: hidden;
}

.hero__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 1024px) {
  .hero__content {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }
}

.hero__eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-6);
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-4xl);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-6);
}

.hero__title .accent {
  color: var(--color-accent);
}

@media (min-width: 1024px) {
  .hero__title {
    font-size: var(--text-5xl);
  }
}

.hero__subtitle {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
  max-width: 48ch;
  margin-bottom: var(--space-8);
}

@media (min-width: 1024px) {
  .hero__subtitle {
    font-size: var(--text-lg);
  }
}

.hero__ctas {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

@media (min-width: 640px) {
  .hero__ctas {
    flex-direction: row;
    gap: var(--space-4);
  }
}

.hero__trust {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.hero__trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.hero__trust-check {
  color: var(--color-accent);
  font-weight: 700;
}

/* Hero visual — CSS geometric fallback */
.hero__visual {
  position: relative;
  aspect-ratio: 1;
  max-height: 500px;
  background: var(--gradient-hero);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: none;
}

@media (min-width: 1024px) {
  .hero__visual {
    display: block;
  }
}

.hero__visual::before {
  content: '';
  position: absolute;
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  animation: pulse-glow 4s ease-in-out infinite;
}

.hero__visual::after {
  content: '';
  position: absolute;
  width: 160px;
  height: 200px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 60px var(--color-accent-glow);
}

/* Inner glow bar on battery silhouette */
.hero__visual-inner {
  position: absolute;
  width: 120px;
  height: 8px;
  background: var(--gradient-accent);
  border-radius: var(--radius-pill);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 30px rgba(245, 166, 35, 0.3);
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.4; transform: translate(-50%, -50%) scale(1); }
  50%       { opacity: 0.7; transform: translate(-50%, -50%) scale(1.15); }
}


/* ==========================================================
   CARDS
   ========================================================== */

.card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  position: relative;
  overflow: hidden;
  transition: border-color var(--duration-base) ease;
}

.card:hover {
  border-color: var(--color-accent);
}

/* Animated top accent line */
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transition: transform var(--duration-base) var(--ease-out-expo);
  transform-origin: left;
}

.card:hover::before {
  transform: scaleX(1);
}

.card__icon {
  width: 40px;
  height: 40px;
  margin-bottom: var(--space-4);
  color: var(--color-accent);
}

.card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

.card__body {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
  margin-bottom: var(--space-4);
}

.card__resolution {
  font-size: var(--text-xs);
  color: var(--color-accent);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  font-style: italic;
}


/* ==========================================================
   BUNDLE CARDS (horizontal scroll on mobile)
   ========================================================== */

.bundles__scroll {
  display: flex;
  gap: var(--space-6);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: var(--space-4);
}

.bundles__scroll::-webkit-scrollbar {
  display: none;
}

@media (min-width: 1024px) {
  .bundles__scroll {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    overflow-x: visible;
    scroll-snap-type: none;
    padding-bottom: 0;
  }
}

.bundle-card {
  flex: 0 0 85vw;
  scroll-snap-align: start;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: border-color var(--duration-base) ease;
}

@media (min-width: 1024px) {
  .bundle-card {
    flex: 1;
  }
}

.bundle-card:hover {
  border-color: var(--color-accent);
}

.bundle-card__label {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  display: inline-block;
  margin-bottom: var(--space-4);
  align-self: flex-start;
}

.bundle-card__badge {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: #000;
  background: var(--color-accent);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.bundle-card__headline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
  line-height: var(--leading-snug);
}

.bundle-card__who {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  line-height: var(--leading-normal);
}

.bundle-card__includes {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  flex-grow: 1;
}

.bundle-card__includes li {
  padding-left: var(--space-5);
  position: relative;
  margin-bottom: var(--space-2);
}

.bundle-card__includes li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.bundle-card__price {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.bundle-card__note {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-6);
}

/* Carousel dots */
.bundles__dots {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

@media (min-width: 1024px) {
  .bundles__dots {
    display: none;
  }
}

.bundles__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-border);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: background var(--duration-fast) ease;
}

.bundles__dot.is-active {
  background: var(--color-accent);
}


/* ==========================================================
   TCO RECEIPTS
   ========================================================== */

.tco-receipts {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
  .tco-receipts {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
}

.tco-receipt {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-5);
  display: flex;
  flex-direction: column;
  min-width: 0;
  word-wrap: break-word;
}

.tco-receipt--danger {
  border-top: 4px solid var(--color-danger);
}

.tco-receipt--premium {
  background: var(--color-surface-2);
  border: 1px solid var(--color-accent);
  border-top: 4px solid var(--color-accent);
  box-shadow: 0 10px 40px var(--color-accent-glow);
}

.tco-receipt__header {
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.tco-receipt__header h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-1);
}

.tco-receipt__header p {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.tco-receipt__items {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  flex-grow: 1;
}

.tco-receipt__item {
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.tco-receipt__item::after {
  content: "";
  flex: 1;
  border-bottom: 1px dotted var(--color-border);
  opacity: 0.2;
  margin-bottom: 4px; /* Align with text baseline */
}

.tco-receipt__item span:first-child {
  flex: 0 1 auto;
  order: 1;
}

.tco-receipt__item span:last-child {
  flex: 0 0 auto;
  order: 3;
  color: var(--color-text-primary);
  font-weight: 500;
  text-align: right;
}

.tco-receipt__item--bold {
  font-weight: 700;
  color: var(--color-text-primary);
}

.tco-receipt__item--bold span:last-child {
  font-weight: 700;
}

/* Highlighted lines (replacing inline styles) */
.tco-receipt__item--highlight {
  padding-bottom: var(--space-4);
  border-bottom: 1px dashed var(--color-border);
  margin-bottom: var(--space-2);
}

.tco-receipt--premium .tco-receipt__item--highlight {
  border-bottom-color: rgba(20, 184, 166, 0.3);
}

.tco-receipt__total {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-top: var(--space-5);
  border-top: 2px dashed var(--color-border);
  margin-top: auto;
}

.tco-receipt--premium .tco-receipt__total {
  border-top-color: rgba(20, 184, 166, 0.4);
}

.tco-receipt__total span {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-tertiary);
}

.tco-receipt__total strong {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-text-primary);
}

/* Savings callout */
.tco__savings {
  text-align: center;
  padding: var(--space-12) 0;
}

.tco__savings-amount {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-3xl);
}

.tco__savings-amount .amount {
  color: var(--color-accent);
}

.tco__savings-note {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  margin-top: var(--space-4);
  max-width: 48ch;
  margin-inline: auto;
}

/* Inline objection */
.tco__objection {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-6);
  max-width: 56ch;
  margin: var(--space-8) 0;
}

.tco__objection-question {
  font-style: italic;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
}

.tco__objection-answer {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
}


/* ==========================================================
   SPEC LIST (Product section)
   ========================================================== */

.spec-list {
  display: grid;
  gap: 0;
}

.spec-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}

.spec-item__label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.spec-item__value {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  text-align: right;
}


/* ==========================================================
   FEATURE GRID (Product section — 6 items, 2 cols)
   ========================================================== */

.feature {
  padding: var(--space-6) 0;
}

.feature__accent {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-accent);
  margin-bottom: var(--space-3);
}

.feature__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
  margin-bottom: var(--space-2);
}

.feature__body {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
}


/* ==========================================================
   ACCORDION (FAQ)
   ========================================================== */

.accordion {
  border-bottom: 1px solid var(--color-border);
}

.accordion__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5) 0;
  text-align: left;
  color: var(--color-text-primary);
  min-height: 44px;
  cursor: pointer;
}

.accordion__question {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
}

@media (min-width: 1024px) {
  .accordion__question {
    font-size: var(--text-lg);
  }
}

.accordion__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-text-tertiary);
  transition: transform var(--duration-base) var(--ease-out-expo);
}

.accordion__icon.is-open {
  transform: rotate(180deg);
}

.accordion__body {
  overflow: hidden;
}

.accordion__answer {
  padding-bottom: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
  max-width: 64ch;
}


/* ==========================================================
   SOLAR STAT BLOCKS
   ========================================================== */

.stat-block {
  border-top: 3px solid var(--color-accent);
  padding-top: var(--space-6);
}

.stat-block__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
}

.stat-block__body {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
}


/* ==========================================================
   TRUST SECTION
   ========================================================== */

.trust-col__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

.trust-col__subtitle {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.trust-col__body {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
}


/* ==========================================================
   CLOSING CTA
   ========================================================== */

.closing-cta {
  text-align: center;
  background:
    linear-gradient(180deg, rgba(245, 166, 35, 0.06) 0%, transparent 40%),
    var(--color-bg);
  padding-block: var(--space-24);
}

.closing-cta__headline {
  margin-bottom: var(--space-6);
}

.closing-cta__body {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
  max-width: 50ch;
  margin-inline: auto;
  margin-bottom: var(--space-10);
}

.closing-cta__actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: center;
  margin-bottom: var(--space-8);
}

@media (min-width: 640px) {
  .closing-cta__actions {
    flex-direction: row;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-4);
  }
}

.closing-cta__reassurance {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}


/* ==========================================================
   FOOTER
   ========================================================== */

.footer {
  background: #050505;
  padding-top: var(--space-16);
  padding-bottom: calc(var(--space-8) + 80px); /* Clear sticky mobile bar */
  border-top: 1px solid var(--color-border);
}

@media (min-width: 640px) {
  .footer {
    padding-bottom: var(--space-8);
  }
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer__brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-xl);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.footer__brand-name span {
  color: var(--color-accent);
}

.footer__tagline {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
  font-style: italic;
}

.footer__domain {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

.footer__heading {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-4);
}

.footer__link {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  padding: var(--space-1) 0;
  transition: color var(--duration-fast) ease;
}

.footer__link:hover {
  color: var(--color-text-primary);
}

.footer__bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

@media (min-width: 768px) {
  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}


/* ==========================================================
   MOBILE STICKY ACTION BAR -> Floating Pill
   ========================================================== */

.mobile-sticky-bar {
  position: fixed;
  bottom: var(--space-6);
  left: 50%;
  z-index: 45;
  background: rgba(12, 12, 12, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-pill);
  padding: var(--space-2) var(--space-2) var(--space-2) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  box-shadow: 0 10px 40px rgba(0,0,0,0.6);
  transform: translateX(-50%) translateY(150%);
  transition: transform var(--duration-base) var(--ease-out-expo);
  width: max-content;
  max-width: 90vw;
}

.mobile-sticky-bar.is-visible {
  transform: translateX(-50%) translateY(0);
}

.mobile-sticky-bar__price {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.mobile-sticky-bar__price-label {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  font-weight: 500;
}

.mobile-sticky-bar__price-value {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text-primary);
}

.mobile-sticky-bar__btn {
  height: 38px;
  min-height: auto;
  padding: 0 var(--space-4);
  font-size: var(--text-xs);
  margin: 0;
}

@media (min-width: 640px) {
  .mobile-sticky-bar {
    display: none !important;
  }
}

/* ==========================================================
   BOTTOM SHEET (App-Like UI)
   ========================================================== */

.bottom-sheet-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 60;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.bottom-sheet {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 61;
  background: var(--color-bg);
  border-radius: 20px 20px 0 0;
  max-height: 90dvh;
  overflow-y: auto;
  box-shadow: 0 -10px 40px rgba(0,0,0,0.5);
  padding: var(--space-6) var(--space-5) calc(var(--space-8) + env(safe-area-inset-bottom, 20px));
}

.bottom-sheet__drag-handle {
  width: 40px;
  height: 5px;
  background: var(--color-border);
  border-radius: var(--radius-pill);
  margin: 0 auto var(--space-4);
}

.bottom-sheet__close {
  position: absolute;
  top: var(--space-5);
  right: var(--space-5);
  z-index: 10;
  background: var(--color-surface-2);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-text-secondary);
}

@media (min-width: 768px) {
  .bottom-sheet {
    max-width: 600px;
    left: 50%;
    transform: translateX(-50%) !important;
    bottom: var(--space-10);
    border-radius: var(--radius-lg);
    max-height: 80vh;
  }
  .bottom-sheet__drag-handle {
    display: none;
  }
}



/* Calculator-specific styles */
    .calc-tabs {
      display: flex;
      gap: var(--space-1);
      margin-bottom: var(--space-8);
      border-bottom: 1px solid var(--color-border);
    }

    .calc-tab {
      padding: var(--space-3) var(--space-6);
      font-family: var(--font-body);
      font-size: var(--text-sm);
      font-weight: 600;
      letter-spacing: var(--tracking-wide);
      text-transform: uppercase;
      color: var(--color-text-tertiary);
      border: none;
      background: none;
      cursor: pointer;
      position: relative;
      transition: color var(--duration-base) ease;
      min-height: 44px;
    }

    .calc-tab:hover {
      color: var(--color-text-secondary);
    }

    .calc-tab.is-active {
      color: var(--color-accent);
    }

    .calc-tab.is-active::after {
      content: '';
      position: absolute;
      bottom: -1px;
      left: 0;
      right: 0;
      height: 2px;
      background: var(--color-accent);
    }

    /* Slider input group */
    .input-group {
      margin-bottom: var(--space-6);
    }

    .input-group__label {
      display: flex;
      justify-content: space-between;
      align-items: baseline;
      margin-bottom: var(--space-2);
    }

    .input-group__name {
      font-size: var(--text-sm);
      font-weight: 500;
      color: var(--color-text-secondary);
    }

    .input-group__value {
      font-family: var(--font-mono);
      font-size: var(--text-base);
      font-weight: 500;
      color: var(--color-accent);
    }

    .input-group__help {
      font-size: var(--text-xs);
      color: var(--color-text-tertiary);
      margin-top: var(--space-1);
    }

    /* Range slider styling */
    input[type="range"] {
      -webkit-appearance: none;
      appearance: none;
      width: 100%;
      height: 6px;
      background: var(--color-surface-2);
      border-radius: var(--radius-pill);
      outline: none;
      cursor: pointer;
    }

    input[type="range"]::-webkit-slider-thumb {
      -webkit-appearance: none;
      appearance: none;
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: var(--color-accent);
      border: 3px solid var(--color-bg);
      box-shadow: 0 0 10px var(--color-accent-glow);
      cursor: grab;
      transition: transform var(--duration-fast) ease;
    }

    input[type="range"]::-webkit-slider-thumb:active {
      cursor: grabbing;
      transform: scale(1.15);
    }

    input[type="range"]::-moz-range-thumb {
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: var(--color-accent);
      border: 3px solid var(--color-bg);
      box-shadow: 0 0 10px var(--color-accent-glow);
      cursor: grab;
    }

    /* Output section */
    .calc-output {
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      padding: var(--space-8);
      margin-top: var(--space-8);
    }

    .calc-output__row {
      display: flex;
      justify-content: space-between;
      align-items: baseline;
      padding: var(--space-2) 0;
      border-bottom: 1px solid var(--color-border);
    }

    .calc-output__row:last-child {
      border-bottom: none;
    }

    .calc-output__label {
      font-size: var(--text-sm);
      color: var(--color-text-secondary);
    }

    .calc-output__value {
      font-family: var(--font-mono);
      font-size: var(--text-sm);
      color: var(--color-text-primary);
    }

    .calc-output__value--accent {
      color: var(--color-accent);
      font-weight: 500;
    }

    /* Savings hero */
    .calc-savings {
      text-align: center;
      padding: var(--space-8) var(--space-4);
      background: var(--color-surface-2);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      margin-top: var(--space-6);
    }

    .calc-savings__label {
      font-size: var(--text-xs);
      letter-spacing: var(--tracking-wider);
      text-transform: uppercase;
      color: var(--color-text-tertiary);
      margin-bottom: var(--space-2);
    }

    .calc-savings__amount {
      font-family: var(--font-display);
      font-weight: 800;
      font-size: var(--text-3xl);
      color: var(--color-accent);
    }

    .calc-savings__amount--negative {
      color: var(--color-danger);
    }

    .calc-savings__note {
      font-size: var(--text-xs);
      color: var(--color-text-tertiary);
      margin-top: var(--space-3);
      max-width: 40ch;
      margin-inline: auto;
    }

    /* Comparison columns */
    .calc-compare {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--space-4);
      margin-top: var(--space-6);
    }
    @media (min-width: 640px) {
      .calc-compare {
        grid-template-columns: 1fr 1fr;
      }
    }

    .calc-compare__col {
      padding: var(--space-6);
      border-radius: var(--radius-lg);
      border: 1px solid var(--color-border);
    }

    .calc-compare__col--lead {
      background: var(--color-surface);
    }

    .calc-compare__col--skymin {
      background: var(--color-surface-2);
      border-color: var(--color-accent);
    }

    .calc-compare__heading {
      font-size: var(--text-xs);
      font-weight: 600;
      letter-spacing: var(--tracking-wider);
      text-transform: uppercase;
      color: var(--color-text-tertiary);
      margin-bottom: var(--space-4);
    }

    .calc-compare__col--skymin .calc-compare__heading {
      color: var(--color-accent);
    }

    .calc-compare__total {
      font-family: var(--font-mono);
      font-size: var(--text-2xl);
      font-weight: 700;
      margin-top: var(--space-4);
      padding-top: var(--space-4);
      border-top: 1px solid var(--color-border);
    }

    /* Slab guide */
    .slab-guide {
      margin-top: var(--space-8);
    }

    .slab-table {
      width: 100%;
      margin-top: var(--space-4);
    }

    .slab-table th,
    .slab-table td {
      text-align: left;
      padding: var(--space-2) var(--space-3);
      border-bottom: 1px solid var(--color-border);
      font-size: var(--text-sm);
    }

    .slab-table th {
      font-weight: 500;
      color: var(--color-text-tertiary);
      font-size: var(--text-xs);
      letter-spacing: var(--tracking-wide);
      text-transform: uppercase;
    }

    .slab-table td {
      font-family: var(--font-mono);
      color: var(--color-text-secondary);
    }

    /* Bill offset output grid */
    .offset-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: var(--space-4);
      margin-top: var(--space-6);
    }

    @media (min-width: 640px) {
      .offset-grid {
        grid-template-columns: repeat(3, 1fr);
      }
    }

    .offset-stat {
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      padding: var(--space-5);
    }

    .offset-stat__label {
      font-size: var(--text-xs);
      color: var(--color-text-tertiary);
      letter-spacing: var(--tracking-wide);
      text-transform: uppercase;
      margin-bottom: var(--space-2);
    }

    .offset-stat__value {
      font-family: var(--font-mono);
      font-size: var(--text-xl);
      font-weight: 700;
      color: var(--color-text-primary);
    }

    .offset-stat__value--accent {
      color: var(--color-accent);
    }

    .offset-stat--wide {
      grid-column: 1 / -1;
    }