/* ============================================
   FinCalc — Design System
   Aesthetic: Financial Noir · Refined Minimal
   ============================================ */

/* ---- VARIABLES ---- */
:root {
  --bg: #0a0c0f;
  --bg-card: #11141a;
  --bg-card-hover: #161b24;
  --border: rgba(255,255,255,0.07);
  --border-hover: rgba(100,200,150,0.3);

  --text: #e8edf5;
  --text-muted: #7a8599;
  --text-subtle: #3d4558;

  --accent: #4ade9a;
  --accent-dim: rgba(74,222,154,0.12);
  --accent-glow: rgba(74,222,154,0.25);
  --gold: #e8c97a;
  --gold-dim: rgba(232,201,122,0.12);

  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'Outfit', sans-serif;
  --font-mono: 'DM Mono', monospace;

  --radius: 12px;
  --radius-lg: 20px;
  --max-w: 1200px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- RESET ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ---- CONTAINER ---- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 2.5rem);
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10,12,15,0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 2rem;
}
.logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: var(--text);
  flex-shrink: 0;
}
.logo-img {
  height: 48px;
  width: auto;
  display: block;
  object-fit: contain;
  transition: opacity 0.2s;
  flex-shrink: 0;
}
.logo:hover .logo-img { opacity: 0.85; }
.logo-symbol { color: var(--accent); font-size: 1.1rem; }
.site-footer .logo-img { height: 60px; }
@media (max-width: 1100px) {
  .logo-img { height: 40px; }
}
@media (max-width: 720px) {
  .logo-img { height: 36px; }
  .site-footer .logo-img { height: 48px; }
}
.main-nav { display: flex; gap: 0.25rem; align-items: center; }
.nav-link {
  padding: 0.4rem 0.85rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--text); background: rgba(255,255,255,0.05); }
.nav-link.nav-cta {
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(74,222,154,0.2);
}
.nav-link.nav-cta:hover { background: var(--accent); color: var(--bg); }
/* Nav separator + Proyectos pill */
.nav-sep {
  display: inline-block;
  width: 1px;
  height: 18px;
  background: var(--border);
  margin: 0 0.15rem;
  vertical-align: middle;
  opacity: 0.6;
}
.nav-link.nav-proyectos {
  background: rgba(220, 60, 60, 0.1);
  color: #ff7a7a;
  border: 1px solid rgba(220, 60, 60, 0.22);
  border-radius: 6px;
}
.nav-link.nav-proyectos:hover,
.nav-link.nav-proyectos.active {
  background: rgba(220, 60, 60, 0.85);
  color: #fff;
  border-color: transparent;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
}
.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black, transparent);
}
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.18;
}
.blob-1 {
  width: 600px; height: 600px;
  background: var(--accent);
  top: -200px; right: -100px;
  animation: drift 12s ease-in-out infinite alternate;
}
.blob-2 {
  width: 400px; height: 400px;
  background: var(--gold);
  bottom: -100px; left: -50px;
  animation: drift 16s ease-in-out infinite alternate-reverse;
}
@keyframes drift {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(40px, 30px) scale(1.05); }
}
.hero-content {
  position: relative;
  z-index: 1;
  padding: 6rem 0;
  max-width: 700px;
}
.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.hero-eyebrow::before {
  content: '';
  display: inline-block;
  width: 24px; height: 1px;
  background: var(--accent);
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 1.5rem;
}
.hero-title em {
  font-style: italic;
  color: var(--accent);
}
.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 520px;
  line-height: 1.7;
  margin-bottom: 2.5rem;
}
.hero-cta { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 4rem; }
.hero-stats {
  display: flex;
  gap: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}
.stat { display: flex; flex-direction: column; gap: 0.2rem; }
.stat-number {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--text);
  line-height: 1;
}
.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #0a0c0f;
}
.btn-primary:hover {
  background: #6ef0b2;
  transform: translateY(-2px);
  box-shadow: 0 12px 30px var(--accent-glow);
}
.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.btn-ghost:hover { border-color: var(--text-muted); color: var(--text); }
.btn-secondary {
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(74,222,154,0.2);
}
.btn-secondary:hover { background: var(--accent); color: var(--bg); }

/* ============================================
   TOOLS SECTION
   ============================================ */
.tools-section { padding: 8rem 0; }
.section-header { text-align: center; margin-bottom: 4rem; }
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}
.section-sub { color: var(--text-muted); font-size: 1rem; }

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}
.tool-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition);
  overflow: hidden;
}
.tool-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--mx,50%) var(--my,50%), rgba(74,222,154,0.06), transparent 60%);
  opacity: 0;
  transition: opacity 0.4s;
  pointer-events: none;
}
.tool-card:hover { border-color: var(--border-hover); transform: translateY(-4px); background: var(--bg-card-hover); }
.tool-card:hover::before { opacity: 1; }

.tool-card--featured {
  border-color: rgba(74,222,154,0.2);
  background: linear-gradient(135deg, #11141a 0%, #101a14 100%);
}
.tool-card--highlight {
  border-color: rgba(232,201,122,0.2);
  background: linear-gradient(135deg, #11141a 0%, #1a1710 100%);
}

.card-badge {
  display: inline-flex;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.7rem;
  background: var(--accent-dim);
  color: var(--accent);
  border-radius: 20px;
  margin-bottom: 1.25rem;
}
.card-icon {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  color: var(--accent);
  line-height: 1;
}
.tool-card--highlight .card-icon { color: var(--gold); }
.card-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}
.card-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.65;
  margin-bottom: 1.25rem;
}
.card-features {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.75rem;
}
.card-features li {
  font-size: 0.82rem;
  color: var(--text-muted);
  padding-left: 1rem;
  position: relative;
}
.card-features li::before {
  content: '·';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: bold;
}
.tool-card--highlight .card-features li::before { color: var(--gold); }
.card-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  transition: gap var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}
.card-link:hover { gap: 0.6rem; }
.tool-card--highlight .card-link { color: var(--gold); }

/* ============================================
   WHY SECTION
   ============================================ */
.why-section { padding: 6rem 0; background: var(--bg-card); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.why-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: center; }
.why-text p { color: var(--text-muted); margin-bottom: 1.25rem; line-height: 1.75; }
.why-text p strong { color: var(--accent); }
.why-text .section-title { margin-bottom: 1.5rem; text-align: left; }

.comparison-bars {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}
.bar-group {
  display: flex;
  gap: 2rem;
  align-items: flex-end;
  height: 200px;
}
.bar {
  width: 80px;
  height: var(--h);
  border-radius: 8px 8px 0 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  padding-top: 0.75rem;
  transition: height 1s cubic-bezier(0.4,0,0.2,1);
}
.bar--save { background: linear-gradient(to top, #3d4558, #5a6478); }
.bar--invest { background: linear-gradient(to top, #22a060, var(--accent)); box-shadow: 0 0 30px var(--accent-glow); }
.bar-label { font-size: 0.72rem; color: var(--bg); font-weight: 600; font-family: var(--font-mono); }
.bar-amount { font-size: 0.7rem; color: rgba(0,0,0,0.6); font-family: var(--font-mono); }
.bar-caption { font-size: 0.78rem; color: var(--text-subtle); font-family: var(--font-mono); }

/* ============================================
   FOOTER
   ============================================ */
.site-footer { padding: 4rem 0 0; border-top: 1px solid var(--border); }
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
}
.footer-brand p { color: var(--text-muted); font-size: 0.875rem; margin-top: 1rem; max-width: 320px; line-height: 1.65; }
.footer-nav h3 { font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-subtle); margin-bottom: 1rem; }
.footer-nav ul { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-nav a { font-size: 0.875rem; color: var(--text-muted); transition: color var(--transition); }
.footer-nav a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid var(--border); padding: 1.25rem 0; text-align: center; }
.footer-bottom p { font-size: 0.8rem; color: var(--text-subtle); font-family: var(--font-mono); }

/* ============================================
   CALCULATOR PAGES — SHARED
   ============================================ */
.page-hero {
  padding: 5rem 0 3rem;
  border-bottom: 1px solid var(--border);
}
.page-breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-subtle);
  margin-bottom: 1.5rem;
}
.page-breadcrumb a { color: var(--text-muted); transition: color var(--transition); }
.page-breadcrumb a:hover { color: var(--accent); }
.page-breadcrumb span { margin: 0 0.5rem; }
.page-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}
.page-subtitle { color: var(--text-muted); max-width: 560px; line-height: 1.65; }

.calc-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  padding: 3.5rem 0 6rem;
  align-items: start;
}

/* Input panel */
.input-panel, .result-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}
.panel-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-subtle);
  margin-bottom: 1.75rem;
}
.form-group { margin-bottom: 1.4rem; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}
.form-group label span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-subtle);
  margin-left: 0.3rem;
}
.input-wrap { position: relative; }
.input-prefix, .input-suffix {
  position: absolute;
  top: 50%; transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  pointer-events: none;
  z-index: 1;
}
.input-prefix { left: 1rem; }
.input-suffix { right: 1rem; }
.form-group input[type="number"],
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  -webkit-appearance: none;
  appearance: none;
}
.form-group input.has-prefix { padding-left: 2.2rem; }
.form-group input.has-suffix { padding-right: 2.5rem; }
.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.form-group select { 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='%237a8599' fill='none' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 1rem center; padding-right: 2.5rem; }

/* Results */
.result-highlight {
  background: var(--accent-dim);
  border: 1px solid rgba(74,222,154,0.2);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  text-align: center;
}
.result-highlight .result-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.result-highlight .result-value {
  font-family: var(--font-display);
  font-size: 2.5rem;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1;
}
.result-highlight .result-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.4rem;
  font-family: var(--font-mono);
}
.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.88rem;
}
.result-row:last-child { border-bottom: none; }
.result-row .label { color: var(--text-muted); }
.result-row .value { font-family: var(--font-mono); font-weight: 500; color: var(--text); }
.result-row .value.positive { color: var(--accent); }
.result-row .value.neutral { color: var(--gold); }

/* Chart */
.chart-section { margin-top: 2rem; }
.chart-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-subtle);
  margin-bottom: 1rem;
}
canvas.calc-chart { width: 100% !important; border-radius: 8px; }

/* Comparison table */
.comparison-table { width: 100%; border-collapse: collapse; margin-top: 1rem; }
.comparison-table th {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-subtle);
  padding: 0.6rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.comparison-table td {
  padding: 0.65rem 0.75rem;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
}
.comparison-table tr:last-child td { border-bottom: none; }
.comparison-table td:first-child { color: var(--text); font-weight: 500; }
.comparison-table td.highlight { color: var(--accent); }
.comparison-table td.gold { color: var(--gold); }

/* ============================================
   META FINANCIERA — special comparison
   ============================================ */
.dual-result {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.dual-card {
  border-radius: var(--radius);
  padding: 1.25rem;
  text-align: center;
}
.dual-card--save { background: rgba(90,100,120,0.2); border: 1px solid rgba(90,100,120,0.3); }
.dual-card--invest { background: var(--accent-dim); border: 1px solid rgba(74,222,154,0.25); }
.dual-card .d-label { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-subtle); margin-bottom: 0.4rem; }
.dual-card--invest .d-label { color: var(--accent); }
.dual-card .d-value { font-family: var(--font-display); font-size: 1.8rem; line-height: 1; margin-bottom: 0.3rem; }
.dual-card .d-sub { font-size: 0.75rem; color: var(--text-muted); font-family: var(--font-mono); }

.savings-badge {
  background: linear-gradient(135deg, var(--accent-dim), var(--gold-dim));
  border: 1px solid rgba(74,222,154,0.2);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.badge-icon { font-size: 1.5rem; }
.badge-text strong { display: block; color: var(--accent); font-size: 1rem; margin-bottom: 0.15rem; }
.badge-text span { font-size: 0.8rem; color: var(--text-muted); }


/* ============================================
   DROPDOWN NAV
   ============================================ */
.nav-dropdown {
  position: relative;
}
.nav-dropdown-btn {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.4rem 0.85rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 6px;
  cursor: pointer;
  transition: color var(--transition), background var(--transition);
  background: none;
  border: none;
  font-family: var(--font-body);
}
.nav-dropdown-btn:hover,
.nav-dropdown.open .nav-dropdown-btn {
  color: var(--text);
  background: rgba(255,255,255,0.05);
}
.nav-dropdown-btn .dd-arrow {
  font-size: 0.6rem;
  opacity: 0.6;
  transition: transform 0.2s;
}
.nav-dropdown.open .dd-arrow { transform: rotate(180deg); }
.nav-dropdown-btn.has-active { color: var(--text); }

.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.4rem;
  min-width: 210px;
  z-index: 200;
  box-shadow: 0 16px 40px rgba(0,0,0,0.5);
}
.nav-dropdown.open .nav-dropdown-menu { display: block; }
.nav-dropdown-menu a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
  text-decoration: none;
}
.nav-dropdown-menu a:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.nav-dropdown-menu a.active { color: var(--accent); background: var(--accent-dim); }
.nav-dropdown-menu .dd-icon { font-size: 0.9rem; opacity: 0.7; }
.nav-dropdown-divider {
  height: 1px;
  background: var(--border);
  margin: 0.3rem 0.5rem;
}
/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1280px) {
  .main-nav { gap: 0.1rem; }
  .nav-link { padding: 0.35rem 0.55rem; font-size: 0.8rem; }
  .nav-sep { margin: 0 0.05rem; }
}
@media (max-width: 1100px) {
  .main-nav { display: none; }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem;
    gap: 0.25rem;
    z-index: 99;
    overflow-y: auto;
    max-height: calc(100vh - 64px);
  }
  .main-nav.open .nav-dropdown-menu {
    display: none;
    position: static;
    box-shadow: none;
    border: none;
    background: var(--bg-card);
    border-radius: 8px;
    margin-top: 0.25rem;
    padding: 0.25rem;
  }
  /* Solo mostrar el menú si el dropdown está abierto explícitamente */
  .main-nav.open .nav-dropdown.open .nav-dropdown-menu {
    display: block;
  }
  .main-nav.open .nav-dropdown.open .nav-dropdown-btn,
  .main-nav.open .nav-dropdown-btn { width: 100%; justify-content: space-between; }
  .menu-toggle { display: flex; }
  .why-inner { grid-template-columns: 1fr; }
  .why-visual { display: none; }
  .calc-layout { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .dual-result { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .hero-stats { gap: 1.5rem; }
  .tools-grid { grid-template-columns: 1fr; }
}


/* ============================================
   MOBILE TAP TARGETS — ensure ≥44px hit areas
   ============================================ */
@media (max-width: 900px) {
  /* Footer nav links: bigger tap area on mobile */
  .footer-nav ul li a {
    display: block;
    padding: 0.55rem 0.25rem;
    min-height: 44px;
    line-height: 1.4;
  }
  /* Tool card CTA at bottom of card */
  .tool-card .calc-cta,
  .tool-card a {
    min-height: 40px;
    display: inline-flex;
    align-items: center;
  }
  /* Dropdown items inside hamburger menu */
  .main-nav.open .nav-dropdown-menu a {
    min-height: 44px;
    padding: 0.7rem 0.85rem;
  }
  /* Main nav-link in hamburger */
  .main-nav.open .nav-link,
  .main-nav.open .nav-dropdown-btn {
    min-height: 44px;
    padding: 0.7rem 0.85rem;
  }
  /* "Ver todas" links and inline navigation */
  .section-cta, .view-all {
    min-height: 36px;
    padding: 0.4rem 0.6rem;
    display: inline-flex;
    align-items: center;
  }
  /* Contact strip on home */
  .contact-link-item { min-height: 56px; }
}

/* ============================================
   GLOBAL FOOTER CONTACT (email everywhere)
   ============================================ */
.site-footer .footer-contact {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}
.site-footer .footer-contact a {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.site-footer .footer-contact a:hover { text-decoration: underline; }
.site-footer .footer-contact-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-subtle);
}

/* ============================================
   DONATION STRIP — above footer, every page
   ============================================ */
.donation-strip {
  padding: 3rem 0;
  border-top: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(232,201,122,0.04), rgba(74,222,154,0.04));
}
.donation-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 2.5rem;
  align-items: center;
}
.donation-text .donation-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.donation-text h3 {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.5vw, 1.85rem);
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  line-height: 1.2;
}
.donation-text h3 em {
  color: var(--gold);
  font-style: normal;
}
.donation-text .donation-sub {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}
.donation-buttons {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.donation-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.4rem;
  border-radius: 10px;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.92rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: all var(--transition);
}
.donation-btn.cafecito {
  background: rgba(232, 201, 122, 0.12);
  color: var(--gold);
  border-color: rgba(232, 201, 122, 0.3);
}
.donation-btn.cafecito:hover {
  background: var(--gold);
  color: var(--bg);
}
.donation-btn.mp {
  background: rgba(74, 222, 154, 0.12);
  color: var(--accent);
  border-color: rgba(74, 222, 154, 0.3);
}
.donation-btn.mp:hover {
  background: var(--accent);
  color: var(--bg);
}
@media (max-width: 760px) {
  .donation-inner { grid-template-columns: 1fr; gap: 1.5rem; text-align: center; }
  .donation-buttons { flex-direction: row; justify-content: center; flex-wrap: wrap; }
}

/* ============================================
   GUÍA DE USO — acordeón <details> reutilizable
   ============================================ */
.use-guide {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  padding: 0;
  margin: 0 auto 1.5rem;
  max-width: 900px;
  overflow: hidden;
}
.use-guide > summary {
  padding: 1rem 1.4rem;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
  transition: background var(--transition);
}
.use-guide > summary::-webkit-details-marker { display: none; }
.use-guide > summary::after {
  content: '▼';
  font-size: 0.65rem;
  opacity: 0.6;
  transition: transform 0.2s;
}
.use-guide[open] > summary::after { transform: rotate(180deg); }
.use-guide > summary:hover { background: rgba(74,222,154,0.04); }
.use-guide .guide-body {
  padding: 0 1.4rem 1.25rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}
.use-guide .guide-body ol {
  padding-left: 1.25rem;
  margin: 0.5rem 0;
}
.use-guide .guide-body ol li { margin-bottom: 0.4rem; }
.use-guide .guide-body strong { color: var(--text); }
.use-guide .guide-body .tip {
  background: rgba(96,165,250,0.06);
  border-left: 2px solid #60a5fa;
  padding: 0.6rem 0.9rem;
  border-radius: 6px;
  margin: 0.75rem 0;
  font-size: 0.85rem;
}

/* ============================================
   FAQ — preguntas frecuentes (acordeón al pie)
   ============================================ */
.faq-section { max-width: 760px; margin: 3rem auto; padding: 0 1rem; }
.faq-section h2 {
  font-family: var(--font-display); font-size: clamp(1.5rem, 3vw, 1.9rem);
  letter-spacing: -0.01em; margin-bottom: 1.25rem; text-align: center;
}
.faq-item {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 10px; margin-bottom: 0.6rem; overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item:hover { border-color: rgba(74,222,154,0.25); }
.faq-item > summary {
  padding: 1rem 1.25rem; cursor: pointer; list-style: none;
  display: flex; align-items: center; justify-content: space-between;
  font-family: var(--font-body); font-weight: 500; font-size: 0.95rem;
  color: var(--text); user-select: none;
}
.faq-item > summary::-webkit-details-marker { display: none; }
.faq-item > summary::after {
  content: '+'; font-family: var(--font-mono); font-size: 1.4rem;
  color: var(--accent); transition: transform 0.2s; line-height: 1;
}
.faq-item[open] > summary::after { content: '−'; }
.faq-body {
  padding: 0 1.25rem 1.1rem;
  color: var(--text-muted); font-size: 0.9rem; line-height: 1.75;
}
.faq-body strong { color: var(--text); }

/* ============================================
   QUIZ — al final de artículos
   ============================================ */
.quiz {
  background: linear-gradient(135deg, rgba(74,222,154,0.06), rgba(96,165,250,0.04));
  border: 1px solid rgba(74,222,154,0.2);
  border-radius: 14px; padding: 1.75rem; margin: 2.5rem 0;
}
.quiz h3 { font-family: var(--font-display); font-size: 1.3rem; margin-bottom: 0.4rem; letter-spacing: -0.01em; }
.quiz > p { color: var(--text-muted); font-size: 0.88rem; margin-bottom: 1.25rem; }
.quiz-q { margin-bottom: 1.5rem; }
.quiz-q .qtext { font-weight: 500; color: var(--text); margin-bottom: 0.75rem; font-size: 0.95rem; line-height: 1.5; }
.quiz-q .qopts { display: flex; flex-direction: column; gap: 0.4rem; }
.quiz-q .qopt {
  text-align: left; padding: 0.7rem 1rem; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: 8px;
  color: var(--text-muted); cursor: pointer; font-size: 0.88rem;
  font-family: var(--font-body); transition: all var(--transition);
}
.quiz-q .qopt:hover { border-color: var(--text-muted); color: var(--text); }
.quiz-q .qopt.correct { background: rgba(74,222,154,0.12); border-color: var(--accent); color: var(--accent); }
.quiz-q .qopt.wrong { background: rgba(255,107,107,0.08); border-color: #ff6b6b; color: #ff9999; }
.quiz-q .qopt.disabled { pointer-events: none; }
.quiz-q .qexplain {
  margin-top: 0.7rem; padding: 0.7rem 0.9rem; background: var(--bg-card);
  border-left: 3px solid var(--accent); border-radius: 6px;
  font-size: 0.82rem; color: var(--text-muted); line-height: 1.6;
  display: none;
}
.quiz-q.answered .qexplain { display: block; }
.quiz-q .qexplain strong { color: var(--text); }
.quiz-score {
  text-align: center; padding-top: 1rem; border-top: 1px solid var(--border);
  font-family: var(--font-mono); font-size: 0.85rem; color: var(--text-muted);
}
.quiz-score strong { color: var(--accent); font-size: 1.1rem; }

/* ============================================
   EMBEDDED MINI-WIDGETS (interactive in articles)
   ============================================ */
.mini-widget {
  background: var(--bg-card); border: 1px solid var(--border);
  border-left: 3px solid #60a5fa;
  border-radius: 12px; padding: 1.5rem; margin: 2rem 0;
}
.mini-widget .mw-head {
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: #60a5fa; margin-bottom: 0.5rem;
}
.mini-widget h3 { font-family: var(--font-display); font-size: 1.2rem; margin-bottom: 0.85rem; letter-spacing: -0.01em; }
.mini-widget .mw-inputs { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin-bottom: 1rem; }
@media(max-width:560px) { .mini-widget .mw-inputs { grid-template-columns: 1fr; } }
.mini-widget label { font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-subtle); display: block; margin-bottom: 0.3rem; }
.mini-widget input, .mini-widget select {
  width: 100%; padding: 0.55rem 0.75rem; background: var(--bg); color: var(--text);
  border: 1px solid var(--border); border-radius: 6px; font-size: 0.88rem;
  font-family: var(--font-body);
}
.mini-widget .mw-result {
  padding: 1rem; background: var(--bg); border-radius: 8px;
  font-size: 0.92rem; color: var(--text-muted); line-height: 1.65; margin-top: 0.5rem;
}
.mini-widget .mw-result strong { color: var(--accent); }

/* ============================================
   RESPONSIVE — safety net global
   ============================================ */
/* Tablas dentro de artículos: scroll horizontal si no entran */
@media (max-width: 720px) {
  .article-body table,
  .compare-grid,
  .blog-grid { font-size: 0.82rem; }
  .article-body { padding: 0 0.5rem; }
  .article-body table th,
  .article-body table td { padding: 0.55rem 0.6rem; }

  /* Hero titles más pequeños en mobile */
  .article-hero h1,
  .lost-hero h1,
  .cmp-hero h1,
  .rank-hero h1,
  .blog-hero h1 { font-size: clamp(1.6rem, 6vw, 2.2rem) !important; }

  /* Mini-widgets de blog */
  .mini-widget { padding: 1.1rem; }
  .mini-widget .mw-inputs { grid-template-columns: 1fr; gap: 0.5rem; }

  /* Quiz padding */
  .quiz { padding: 1.25rem; }
  .quiz-q .qopt { padding: 0.6rem 0.8rem; font-size: 0.85rem; }

  /* FAQ summary tap area */
  .faq-item > summary { padding: 0.9rem 1rem; font-size: 0.9rem; }
  .faq-body { padding: 0 1rem 1rem; font-size: 0.85rem; }

  /* Ranking weekly */
  .rank-card { padding: 1.1rem; }
  .rank-row { padding: 0.55rem 0.7rem; gap: 0.55rem; }
  .rank-pct { min-width: 56px; font-size: 0.92rem; }

  /* Comparador dólares */
  .dolar-card { padding: 1.1rem; }
  .dolar-price { font-size: 1.6rem; }
}

/* Cualquier tabla que NO esté en wrapper, hacemos display:block para scroll horizontal */
@media (max-width: 600px) {
  table:not(.cmp-table):not(.vol-table) {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    max-width: 100%;
  }
}

/* code/pre no rompen layout */
code, pre { word-break: break-word; overflow-wrap: anywhere; max-width: 100%; }
img { max-width: 100%; height: auto; }