:root {
  --black: #0f1b2d;
  --border: #dce4ef;
  --blue: #1a3a6e;
  --blue-mid: #2356a8;
  --blue-accent: #3b7dd8;
  --blue-light: #e8f0fb;
  --blue-dim: rgba(35,86,168,0.1);
  --white: #ffffff;
  --body-bg: #ffffff;
  --text: #1a2a40;
  --muted: #6b7f99;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: #ffffff;
  color: var(--text);
  font-family: 'Barlow', sans-serif;
  font-weight: 300;
  overflow-x: hidden;
}

/* NAV */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.nav-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
  padding: 1rem 3rem;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

nav ul {
  display: flex;
  gap: 2rem;
  list-style: none;
  justify-content: center;
  align-items: center;
}

nav ul a {
  color: var(--blue);
  text-decoration: none;
  font-size: 1.2rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 600;
  transition: color 0.2s;
}

nav ul a:hover { color: var(--blue-accent); }
nav ul a.active { color: #c9a84c; }

.nav-cta {
  background-color: #0400ff;
  border: none;
  color: var(--white);
  padding: 0.65rem 1.6rem;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.25s;
  text-decoration: none;
  border-radius: 50px;
  white-space: nowrap;
}

.nav-cta:hover { background: var(--black); color: var(--white); }

/* HERO */
.hero {
  display: flex;
  align-items: center;
  position: relative;
  padding: 7rem 3rem 4rem;
  background: #ffffff;
}

.hero-grid {
  display: flex;
  flex-direction: column;
  gap: 3rem;
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
  width: 100%;
}

.hero h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  color: var(--black);
}

.hero h1 em {
  font-style: italic;
  color: var(--blue-mid);
}

/* SIMULATOR CARD */
.sim-card {
  background: var(--white);
  border: 1px solid var(--border);
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 40px rgba(26,58,110,0.10);
  border-radius: 1.5rem;
}

.sim-card-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--blue-mid);
  margin-bottom: 1.5rem;
}

/* STEPS */
.steps-flow {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.step-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.72rem;
  color: var(--muted);
  font-weight: bold;
}

.step-icon {
  width: 32px; height: 32px;
  border: 1px solid var(--border);
  border-radius: 25%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.step-item.active .step-icon { border-color: var(--blue-mid); color: var(--blue-mid); }
.step-arrow { color: black; font-size: 1rem; font-weight: bold; }

/* INPUT GROUP */
.input-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.input-group input[type="url"],
.input-group input[type="text"] {
  flex: 1;
  min-width: 200px;
  background: var(--body-bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.85rem 1rem;
  font-family: 'Barlow', sans-serif;
  font-size: 0.85rem;
  outline: none;
  transition: border-color 0.2s;
  border-radius: 50px;
}

.input-group input[type="url"]::placeholder,
.input-group input[type="text"]::placeholder { color: #aab; }
.input-group input[type="url"]:focus,
.input-group input[type="text"]:focus { border-color: var(--blue-mid); }

/* SELECTS no input-group */
.input-group select {
  flex: 1;
  min-width: 200px;
  background: var(--body-bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.85rem 2.5rem 0.85rem 1rem;
  font-family: 'Barlow', sans-serif;
  font-size: 0.85rem;
  outline: none;
  transition: border-color 0.2s;
  border-radius: 50px;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7f99' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  cursor: pointer;
}

.input-group select:focus { border-color: var(--blue-mid); }

/* FILTRO CONTAINER — checkboxes */
#filtroContainer {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 0.25rem 0.5rem;
}

#filtroContainer label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Barlow', sans-serif;
  font-size: 0.85rem;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
}

#filtroContainer input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--border);
  border-radius: 4px;
  background: var(--body-bg);
  cursor: pointer;
  transition: all 0.2s;
  flex-shrink: 0;
  position: relative;
}

#filtroContainer input[type="checkbox"]:checked {
  background: var(--blue);
  border-color: var(--blue);
}

#filtroContainer input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 1px;
  width: 5px;
  height: 9px;
  border: 2px solid white;
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
}

.btn-simulate {
  background: var(--blue);
  border: 1px solid var(--blue);
  color: var(--white);
  padding: 0.85rem 1.8rem;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.25s;
  white-space: nowrap;
  border-radius: 50px;
}

.btn-simulate:hover { background: var(--blue-mid); }

/* LOADER */
.loader-overlay {
  display: none;
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.92);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1rem;
  z-index: 10;
  border-radius: 1.5rem;
}

.loader-overlay.active { display: flex; }

.loader-ring {
  width: 180px;
  height: auto;
  display: block;
}

.loader-text {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--blue);
}

/* BUTTONS */
.btn-secondary {
  flex: 1;
  padding: 0.7rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
  border-radius: 50px;
}

.btn-secondary:hover { border-color: var(--text); color: var(--text); }

.btn-primary-sm {
  flex: 1;
  padding: 0.7rem;
  background: var(--blue);
  border: 1px solid var(--blue);
  color: var(--white);
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
  border-radius: 50px;
}

.btn-primary-sm:hover { background: var(--blue-mid); }

/* SLIDERS */
.slider-group { margin-bottom: 1.5rem; }

.slider-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.slider-label {
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
}

.slider-val {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  color: var(--blue-mid);
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 2px;
  background: var(--border);
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px; height: 16px;
  background: var(--blue);
  cursor: pointer;
  border: none;
  border-radius: 50%;
}

.months-group {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-top: 0.75rem;
}

.month-btn {
  padding: 0.35rem 0.6rem;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s;
  border-radius: 4px;
}

.month-btn.active, .month-btn:hover {
  border-color: var(--blue-mid);
  color: var(--blue-mid);
  background: var(--blue-dim);
}

/* CREDIT RESULT */
.credit-result { text-align: center; }

.credit-monthly {
  font-family: 'Playfair Display', serif;
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--blue);
  line-height: 1;
}

.credit-monthly span { font-size: 1.5rem; }

.credit-monthly-label {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 0.5rem;
  margin-bottom: 2rem;
}

.credit-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  text-align: left;
}

.credit-detail-item {
  padding: 1rem;
  border: 1px solid var(--border);
  background: #f4f7fc;
  border-radius: 0.5rem;
}

.detail-label {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.3rem;
}

.detail-val {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--blue);
}

/* NOTIFICATION */
.notif {
  position: fixed;
  bottom: 2rem; right: 2rem;
  background: var(--blue);
  color: var(--white);
  padding: 1rem 1.5rem;
  font-size: 0.82rem;
  z-index: 200;
  display: none;
  animation: slideIn 0.3s ease;
  max-width: 320px;
  border-radius: 0.75rem;
}

.notif.show { display: block; }

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

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

/* MOBILE */
@media (max-width: 768px) {
  .nav-inner { padding: 0.8rem 1.5rem; grid-template-columns: 1fr auto; }
  nav ul { display: none; }
  .nav-cta { padding: 0.55rem 1.1rem; font-size: 0.72rem; }
  .hero { padding: 6rem 1.5rem 3rem; }
}