/* ===========================================================
   sec-4.css — CONFIGURATIONS (price cards) + EMI CALCULATOR
   =========================================================== */
#section-4 {
  padding: 80px 0;
  background: var(--bg-2);
}

/* configuration / price cards */
.config-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 480px));
  gap: 40px;
  justify-content: center;
}
.config-card {
  background: var(--paper);
  border: 1px solid var(--line);
  transition:
    box-shadow 0.3s ease,
    transform 0.3s ease;
}
.config-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.config-art {
  position: relative;
  overflow: hidden;
}
.config-art img {
  width: 100%;
  aspect-ratio: 3/2;
  object-fit: contain;
  filter: blur(5px);
}
.config-tag {
  position: absolute;
  left: 16px;
  top: 16px;
  background: var(--accent);
  color: #f7f0ec;
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 7px 13px;
  border-radius: 2px;
}
.config-body {
  padding: 26px 28px 30px;
}
.config-body h4 {
  font-family: var(--serif);
  font-size: 28px;
  color: var(--ink);
}
.config-meta {
  display: grid;
  gap: 13px;
  margin: 20px 0 24px;
}
.config-meta .row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid var(--line-soft);
  padding-bottom: 11px;
}
.config-meta .row .k {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.config-meta .row .v {
  font-family: var(--serif);
  font-size: 20px;
  color: var(--ink);
}
.config-meta .row .v.price {
  color: var(--accent);
  font-size: 24px;
}
.config-card .btn {
  width: 100%;
}

.config-note {
  font-family: var(--sans);
  font-size: 12px;
  color: var(--ink-mute);
  margin-top: 22px;
  max-width: 760px;
}

/* EMI calculator */
.emi-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: stretch;
  margin-top: 20px;
}
.emi-intro {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.emi-intro h3 {
  font-size: clamp(34px, 4vw, 52px);
  margin: 18px 0 0;
}
.emi-intro p {
  margin-top: 20px;
  color: var(--ink-soft);
  font-size: 18px;
  max-width: 440px;
}
.emi-intro .emi-points {
  margin-top: 30px;
  display: grid;
  gap: 14px;
}
.emi-intro .emi-points li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: var(--ink-soft);
}
.emi-intro .emi-points .i {
  color: var(--gold);
  margin-top: 3px;
}

.emi-card {
  background: var(--accent-950);
  color: #f7f0ec;
  padding: 40px;
  display: flex;
  flex-direction: column;
}
.emi-card .eyebrow {
  color: var(--gold-soft);
}
.emi-card h3 {
  font-size: 30px;
  margin: 14px 0 30px;
  color: #f7f0ec;
}
.emi-controls {
  display: grid;
  gap: 30px;
}
.emi-field .emi-field-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 12px;
}
.emi-field .emi-label {
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(244, 235, 230, 0.6);
}
.emi-field .emi-out {
  font-family: var(--serif);
  font-size: 26px;
  color: var(--gold-soft);
}
.emi-field input[type="range"] {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 3px;
  border-radius: 2px;
  outline: none;
  background: rgba(247, 240, 236, 0.18);
}
.emi-field input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--gold-soft);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}
.emi-field input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border: none;
  border-radius: 50%;
  background: var(--gold-soft);
  cursor: pointer;
}

.emi-result {
  margin-top: 34px;
  padding-top: 28px;
  border-top: 1px solid rgba(247, 240, 236, 0.16);
}
.emi-result .er-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.emi-result .er-top .er-k {
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(244, 235, 230, 0.6);
}
.emi-result .er-top .er-v {
  font-family: var(--serif);
  font-size: 44px;
  color: var(--gold-soft);
  line-height: 1;
}
.emi-bar {
  display: flex;
  height: 7px;
  border-radius: 4px;
  overflow: hidden;
  margin: 22px 0 14px;
  background: rgba(247, 240, 236, 0.14);
}
.emi-bar .principal {
  background: var(--gold-soft);
}
.emi-bar .interest {
  background: rgba(247, 240, 236, 0.4);
}
.emi-split {
  display: flex;
  justify-content: space-between;
  font-family: var(--sans);
  font-size: 13px;
  color: rgba(244, 235, 230, 0.72);
}
.emi-card .btn {
  margin-top: 30px;
}

@media (max-width: 1000px) {
  .config-cards {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin-inline: auto;
  }
  .emi-wrap {
    grid-template-columns: 1fr;
    gap: 34px;
  }
}