/* ═══ NISHA INTERIORS - COST ESTIMATOR STYLES ═══ */
:root {
  --black: #060608;
  --obsidian: #0d0d12;
  --card-bg: #12121a;
  --border-color: rgba(232, 213, 163, 0.15);
  --border-gold: rgba(232, 213, 163, 0.4);
  --champagne: #e8d5a3;
  --brass: #b8965a;
  --wine: #781c2a;
  --muted: #a0a0ab;
  --white: #f5f5f7;
  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', sans-serif;
  --font-mono: 'Space Mono', monospace;
  --ease-luxury: cubic-bezier(0.25, 1, 0.5, 1);
}

.calc-section {
  padding: 100px 5vw;
  background: var(--obsidian);
  position: relative;
  z-index: 10;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.calc-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px;
}

.calc-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  color: var(--brass);
  text-transform: uppercase;
  margin-bottom: 16px;
  display: block;
}

.calc-title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4vw, 3.8rem);
  font-weight: 600;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 20px;
}

.calc-title em {
  font-style: italic;
  color: var(--champagne);
  font-weight: 300;
}

.calc-subtitle {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.7;
}

/* Steps Progress Bar */
.calc-progress {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  margin-bottom: 48px;
}

.calc-step-indicator {
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0.5;
  transition: opacity 0.3s;
}

.calc-step-indicator.active {
  opacity: 1;
}

.step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--brass);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--champagne);
  background: var(--black);
}

.calc-step-indicator.active .step-num {
  background: var(--wine);
  border-color: var(--champagne);
  color: var(--white);
}

.step-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
}

.step-divider {
  width: 40px;
  height: 1px;
  background: var(--border-color);
}

/* Card Selection Grid */
.calc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  max-width: 1050px;
  margin: 0 auto 40px;
}

.calc-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 28px 24px;
  cursor: pointer;
  transition: all 0.35s var(--ease-luxury);
  position: relative;
  overflow: hidden;
}

.calc-card:hover {
  border-color: var(--border-gold);
  transform: translateY(-4px);
  background: rgba(232, 213, 163, 0.03);
}

.calc-card.selected {
  border-color: var(--champagne);
  background: rgba(120, 28, 42, 0.15);
  box-shadow: 0 0 25px rgba(232, 213, 163, 0.08);
}

.calc-card-icon {
  font-size: 1.8rem;
  margin-bottom: 16px;
  color: var(--champagne);
}

.calc-card-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--white);
  margin-bottom: 8px;
}

.calc-card-desc {
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.5;
}

.calc-card-check {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: transparent;
  transition: all 0.3s;
}

.calc-card.selected .calc-card-check {
  border-color: var(--champagne);
  background: var(--champagne);
  color: var(--black);
}

/* Result Box */
.calc-result-box {
  max-width: 680px;
  margin: 40px auto 0;
  background: rgba(6, 6, 8, 0.85);
  border: 1px solid var(--champagne);
  border-radius: 6px;
  padding: 36px;
  text-align: center;
  box-shadow: 0 10px 40px rgba(0,0,0,0.5);
  display: none;
  animation: fadeIn 0.5s ease-out forwards;
}

.calc-result-box.show {
  display: block;
}

.result-heading {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--brass);
  margin-bottom: 12px;
}

.result-price-range {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  color: var(--champagne);
  line-height: 1;
  margin-bottom: 16px;
}

.result-note {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 28px;
}

.result-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary-gold {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--champagne);
  color: var(--black);
  padding: 14px 28px;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.3s;
  border: 1px solid var(--champagne);
  cursor: pointer;
}

.btn-primary-gold:hover {
  background: transparent;
  color: var(--champagne);
}

.btn-whatsapp {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(37, 211, 102, 0.1);
  color: #25d366;
  padding: 14px 28px;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid rgba(37, 211, 102, 0.3);
  transition: all 0.3s;
}

.btn-whatsapp:hover {
  background: rgba(37, 211, 102, 0.25);
  border-color: #25d366;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}


/* ═══ SMALL-SCREEN FIXES (iPhone SE 320-375px) ═══ */
@media (max-width: 480px) {
  .calc-section { padding: 64px 5vw; }
  .calc-header { margin-bottom: 36px; }
  .calc-progress { gap: 8px; margin-bottom: 32px; }
  .calc-step-indicator { gap: 6px; }
  .step-label { display: none; }               /* numbers only: labels overflowed at 320px */
  .step-divider { width: 24px; }
  .calc-grid { grid-template-columns: 1fr; gap: 12px; }
  .calc-card { padding: 20px 18px; }
  .calc-result-box { padding: 24px 16px; margin-top: 28px; }
  .result-price-range { font-size: 2rem; line-height: 1.15; }
  .result-actions { flex-direction: column; gap: 10px; }
  .btn-primary-gold, .btn-whatsapp { width: 100%; justify-content: center; text-align: center; padding: 14px 16px; font-size: .7rem; letter-spacing: .08em; }
}
@media (max-width: 360px) { .calc-title { font-size: 1.9rem; } }