/* ============================================================
   BNT Global Services – Construction Calculator
   Premium CSS Design System
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Playfair+Display:wght@600;700&display=swap');

/* ── CSS Variables ─────────────────────────────────────────── */
:root {
  --gold:        #D4A017;
  --gold-light:  #F0C040;
  --gold-dark:   #A8780A;
  --amber:       #E8892B;
  --deep:        #0D1117;
  --dark:        #141921;
  --card-bg:     rgba(255,255,255,0.06);
  --card-border: rgba(212,160,23,0.25);
  --text-main:   #F4F0E8;
  --text-muted:  #9A9280;
  --text-dark:   #1A1410;
  --success:     #2ECC8A;
  --error:       #E84C4C;
  --radius-lg:   20px;
  --radius-xl:   32px;
  --blur:        blur(18px);
  --shadow-gold: 0 8px 32px rgba(212,160,23,0.25);
  --shadow-card: 0 20px 60px rgba(0,0,0,0.4);
  --transition:  all 0.35s cubic-bezier(0.4,0,0.2,1);
}

/* ── Reset & Base ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Outfit', sans-serif;
  background: var(--deep);
  color: var(--text-main);
  overflow-x: hidden;
  line-height: 1.6;
}

/* ── Scrollbar ─────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark); }
::-webkit-scrollbar-thumb { background: var(--gold); border-radius: 3px; }

/* ── WhatsApp Button ───────────────────────────────────────── */
.btn-whatsapp {
  display: block;
  width: 100%;
  background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
  color: #fff !important;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  padding: 15px 20px;
  border-radius: 14px;
  border: 1px solid rgba(37,211,102,0.4);
  text-decoration: none !important;
  text-align: center;
  transition: var(--transition);
  letter-spacing: 0.3px;
  box-shadow: 0 6px 24px rgba(37,211,102,0.25);
  margin-top: 12px;
  line-height: 1.5;
  cursor: pointer;
}

.btn-whatsapp:hover {
  color: #fff !important;
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(37,211,102,0.4);
  background: linear-gradient(135deg, #2de073 0%, #25D366 100%);
}

.btn-whatsapp:active { transform: translateY(0); }

.btn-whatsapp svg {
  display: inline-block;
  vertical-align: middle;
  margin-right: 8px;
  margin-top: -2px;
  flex-shrink: 0;
}

/* OR divider between form buttons */
.btn-or-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 14px 0 2px;
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.btn-or-divider::before,
.btn-or-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: rgba(212,160,23,0.2);
}

/* ── Navbar ────────────────────────────────────────────────── */
.bnt-navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 14px 0;
  background: rgba(13,17,23,0.75);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--card-border);
  transition: var(--transition);
}

.bnt-navbar .brand-name {
  font-size: 1.3rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--gold-light), var(--amber));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 0.5px;
}

.bnt-navbar .nav-phone {
  color: var(--text-muted);
  font-size: 0.88rem;
  text-decoration: none;
  transition: var(--transition);
}
.bnt-navbar .nav-phone:hover { color: var(--gold-light); }

/* ── Hero ──────────────────────────────────────────────────── */
#hero {
  min-height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--deep);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('../images/hero-bg.png') center center / cover no-repeat;
  transform: scale(1.04);
  transition: transform 8s ease;
}
#hero:hover .hero-bg { transform: scale(1.0); }

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(13,17,23,0.92) 0%,
    rgba(13,17,23,0.70) 50%,
    rgba(168,120,10,0.35) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 120px 0 80px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(212,160,23,0.15);
  border: 1px solid var(--card-border);
  color: var(--gold-light);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 50px;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 20px;
  backdrop-filter: var(--blur);
}

.hero-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.15;
  color: #fff;
  margin-bottom: 20px;
}

.hero-title .highlight {
  background: linear-gradient(135deg, var(--gold-light), var(--amber));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 36px;
  font-weight: 400;
}

.btn-primary-gold {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--gold), var(--amber));
  color: var(--text-dark);
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  padding: 15px 34px;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  box-shadow: var(--shadow-gold);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn-primary-gold::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  opacity: 0;
  transition: var(--transition);
}

.btn-primary-gold:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(212,160,23,0.45); }
.btn-primary-gold:hover::before { opacity: 1; }
.btn-primary-gold span, .btn-primary-gold i { position: relative; z-index: 1; }

.hero-stats {
  display: flex;
  gap: 36px;
  margin-top: 48px;
  flex-wrap: wrap;
}

.h-stat {
  text-align: left;
}

.h-stat-num {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--gold-light);
  line-height: 1;
}

.h-stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-top: 4px;
}

/* ── Section Headings ──────────────────────────────────────── */
.section-label {
  display: inline-block;
  color: var(--gold-light);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 10px;
}

.section-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
}

.section-title .gold { color: var(--gold-light); }

/* ── Glass Cards ───────────────────────────────────────────── */
.glass-card {
  background: var(--card-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
}

/* ── Calculator Section ────────────────────────────────────── */
#calculator {
  padding: 100px 0;
  background: linear-gradient(180deg, var(--deep) 0%, var(--dark) 100%);
  position: relative;
}

#calculator::before {
  content: '';
  position: absolute;
  top: -1px; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.calc-card { padding: 40px 36px; }

/* Form Labels & Inputs */
.form-label-custom {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 8px;
  display: block;
}

.form-control-custom,
.form-select-custom {
  width: 100%;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(212,160,23,0.2);
  border-radius: 12px;
  color: var(--text-main);
  font-family: 'Outfit', sans-serif;
  font-size: 1rem;
  padding: 13px 18px;
  transition: var(--transition);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}

.form-control-custom:focus,
.form-select-custom:focus {
  border-color: var(--gold);
  background: rgba(212,160,23,0.08);
  box-shadow: 0 0 0 3px rgba(212,160,23,0.15);
}

.form-control-custom::placeholder { color: var(--text-muted); opacity: 0.6; }

.form-select-custom option {
  background: var(--dark);
  color: var(--text-main);
}

/* Package Radio Cards */
.package-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.pkg-card {
  background: rgba(255,255,255,0.04);
  border: 2px solid rgba(212,160,23,0.15);
  border-radius: 14px;
  padding: 16px 14px;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  position: relative;
}

.pkg-card input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0; height: 0;
}

.pkg-card:hover { border-color: rgba(212,160,23,0.5); background: rgba(212,160,23,0.06); }

.pkg-card.active {
  border-color: var(--gold);
  background: rgba(212,160,23,0.12);
  box-shadow: 0 0 20px rgba(212,160,23,0.2);
}

.pkg-icon { font-size: 1.5rem; margin-bottom: 6px; }
.pkg-name { font-size: 0.92rem; font-weight: 700; color: var(--text-main); }
.pkg-rate { font-size: 0.75rem; color: var(--gold-light); font-weight: 500; margin-top: 2px; }

.pkg-card.active .pkg-name { color: var(--gold-light); }

/* Toggle Switches */
.toggle-group {
  display: flex;
  gap: 12px;
}

.toggle-btn {
  flex: 1;
  padding: 12px;
  border-radius: 10px;
  border: 2px solid rgba(212,160,23,0.2);
  background: rgba(255,255,255,0.04);
  color: var(--text-muted);
  font-family: 'Outfit', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.toggle-btn:hover { border-color: rgba(212,160,23,0.5); color: var(--text-main); }

.toggle-btn.active {
  border-color: var(--gold);
  background: rgba(212,160,23,0.15);
  color: var(--gold-light);
}

/* Calculate Button */
.btn-calculate {
  width: 100%;
  background: linear-gradient(135deg, var(--gold), var(--amber));
  color: var(--text-dark);
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 1.1rem;
  padding: 17px;
  border: none;
  border-radius: 14px;
  cursor: pointer;
  transition: var(--transition);
  letter-spacing: 0.5px;
  position: relative;
  overflow: hidden;
  margin-top: 8px;
}

.btn-calculate:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(212,160,23,0.45);
}

.btn-calculate:active { transform: translateY(0); }

/* Loading Spinner */
.spinner-overlay {
  display: none;
  position: absolute;
  inset: 0;
  background: rgba(212,160,23,0.9);
  border-radius: 14px;
  align-items: center;
  justify-content: center;
}

.spinner-overlay.show { display: flex; }

.spinner-ring {
  width: 32px; height: 32px;
  border: 3px solid rgba(20,25,33,0.3);
  border-top-color: var(--dark);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Result Section ────────────────────────────────────────── */
#result-section {
  display: none;
  padding: 0 0 80px;
  background: var(--dark);
}

#result-section.visible { display: block; }

.result-card {
  padding: 40px;
  position: relative;
  overflow: hidden;
  animation: slideUp 0.5s cubic-bezier(0.4,0,0.2,1) forwards;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(40px); }
  to   { opacity: 1; transform: translateY(0); }
}

.result-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--amber), var(--gold-light));
}

.result-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, rgba(212,160,23,0.2), rgba(232,137,43,0.15));
  border: 1px solid var(--card-border);
  color: var(--gold-light);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 50px;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.cost-range {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 700;
  background: linear-gradient(135deg, var(--gold-light), var(--amber));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin-bottom: 6px;
}

.cost-note {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.result-item {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(212,160,23,0.15);
  border-radius: 14px;
  padding: 18px 16px;
  text-align: center;
}

.result-item .r-icon {
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.result-item .r-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gold-light);
}

.result-item .r-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-top: 3px;
}

/* ── Lead Gate / Blur Overlay ──────────────────────────────── */
#lead-gate {
  display: none;
  padding: 60px 0 80px;
  background: var(--dark);
}

#lead-gate.visible { display: block; }

.gate-wrapper { position: relative; }

.blurred-report {
  filter: blur(7px);
  pointer-events: none;
  user-select: none;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.unlock-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  z-index: 10;
  background: radial-gradient(ellipse at center, rgba(13,17,23,0.85) 0%, rgba(13,17,23,0.5) 100%);
  border-radius: var(--radius-xl);
}

.lock-icon { font-size: 3rem; margin-bottom: 12px; }

.unlock-title {
  font-family: 'Playfair Display', serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.unlock-sub {
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 300px;
  margin-bottom: 24px;
}

/* Lead Form */
.lead-form-card { padding: 40px 36px; }

.lead-form-card .form-group { margin-bottom: 20px; }

.input-wrapper {
  position: relative;
}

.input-wrapper .input-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gold);
  font-size: 1rem;
  pointer-events: none;
}

.input-wrapper .form-control-custom {
  padding-left: 44px;
}

.btn-submit-lead {
  width: 100%;
  background: linear-gradient(135deg, var(--gold), var(--amber));
  color: var(--text-dark);
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 1.05rem;
  padding: 16px;
  border: none;
  border-radius: 14px;
  cursor: pointer;
  transition: var(--transition);
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 8px;
}

.btn-submit-lead:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(212,160,23,0.45);
}

/* Success Message */
.success-box {
  display: none;
  background: rgba(46,204,138,0.12);
  border: 1px solid rgba(46,204,138,0.4);
  border-radius: 14px;
  padding: 24px;
  text-align: center;
  animation: slideUp 0.4s ease forwards;
}

.success-box.show { display: block; }
.success-box .success-icon { font-size: 2.5rem; margin-bottom: 10px; }
.success-box .success-title { font-size: 1.2rem; font-weight: 700; color: var(--success); }
.success-box .success-sub { font-size: 0.88rem; color: var(--text-muted); margin-top: 6px; }

/* Error Message */
.error-box {
  display: none;
  background: rgba(232,76,76,0.12);
  border: 1px solid rgba(232,76,76,0.4);
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 0.88rem;
  color: var(--error);
  margin-bottom: 16px;
  animation: slideUp 0.3s ease forwards;
}

.error-box.show { display: block; }

/* ── Trust Section ─────────────────────────────────────────── */
#trust {
  padding: 90px 0;
  background: linear-gradient(180deg, var(--dark) 0%, var(--deep) 100%);
  position: relative;
  overflow: hidden;
}

#trust::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(212,160,23,0.06) 0%, transparent 70%);
}

.stat-card {
  text-align: center;
  padding: 36px 24px;
  transition: var(--transition);
}

.stat-card:hover { transform: translateY(-6px); }

.stat-icon {
  width: 64px; height: 64px;
  background: linear-gradient(135deg, rgba(212,160,23,0.2), rgba(232,137,43,0.1));
  border: 1px solid var(--card-border);
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin: 0 auto 16px;
}

.stat-number {
  font-family: 'Playfair Display', serif;
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--gold-light);
  line-height: 1;
}

.stat-suffix { font-size: 1.5rem; color: var(--amber); }

.stat-label {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 8px;
  font-weight: 500;
}

/* Service Areas */
.areas-strip {
  background: rgba(212,160,23,0.06);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  margin-top: 56px;
}

.area-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(212,160,23,0.1);
  border: 1px solid rgba(212,160,23,0.25);
  color: var(--gold-light);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 50px;
  margin: 4px;
  transition: var(--transition);
}

.area-chip:hover { background: rgba(212,160,23,0.2); }

/* ── Footer ────────────────────────────────────────────────── */
#footer {
  background: rgba(0,0,0,0.5);
  border-top: 1px solid var(--card-border);
  padding: 40px 0 24px;
}

.footer-brand {
  font-size: 1.3rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--gold-light), var(--amber));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.footer-tagline {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.footer-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-link:hover { color: var(--gold-light); }

.footer-divider {
  border-color: rgba(212,160,23,0.15);
  margin: 24px 0;
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-align: center;
}

/* ── Utility / Misc ────────────────────────────────────────── */
.divider-gold {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  border: none;
  margin: 0;
}

.section-bg-pattern {
  background-image:
    radial-gradient(circle at 25% 25%, rgba(212,160,23,0.04) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(232,137,43,0.04) 0%, transparent 50%);
}

/* ── Animations ────────────────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.in-view {
  opacity: 1;
  transform: none;
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 768px) {
  .calc-card, .lead-form-card, .result-card { padding: 28px 20px; }
  .package-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { gap: 24px; }
  .result-grid { grid-template-columns: repeat(2, 1fr); }
  .areas-strip { padding: 20px 16px; }
}

@media (max-width: 480px) {
  .package-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .result-grid { grid-template-columns: 1fr 1fr; }
  .toggle-group { flex-direction: row; }
}