/* ============================================
   VOZ DIGITAL — Landing Page
   Single-file, static-first, BEM-inspired
   ============================================ */

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Roboto', system-ui, sans-serif;
  font-size: 16px; line-height: 1.65;
  color: #010101; background: #ffffff;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { font-family: 'Josefin Sans', sans-serif; font-weight: 500; line-height: 1.15; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; border: none; background: none; }
ul { list-style: none; }

/* ---- Tokens ---- */
:root {
  --c-negro: #010101;
  --c-violeta: #4340ab;
  --c-azul: #5478ff;
  --c-gris: #57545c;
  --c-lila: #bf95e1;
  --c-ash: #f0f0f0;
  --c-white: #ffffff;
  --c-v900: #45455a;
  --c-v800: #4c4b65;
  --c-v700: #54536b;
  --c-v600: #64627b;
  --c-v500: #746f8d;

  --font-display: 'Josefin Sans', sans-serif;
  --font-body: 'Roboto', sans-serif;

  --r-sm: 6px; --r-md: 10px; --r-lg: 12px; --r-xl: 16px;
  --s-1: 4px; --s-2: 8px; --s-3: 12px; --s-4: 16px;
  --s-5: 20px; --s-6: 24px; --s-8: 32px; --s-10: 40px;
  --s-12: 48px; --s-16: 64px; --s-20: 80px;
}

/* ---- Layout ---- */
.container { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 var(--s-5); }
.section { padding: var(--s-16) 0; }
.section-dark { background: var(--c-negro); color: var(--c-ash); }
.section-header { text-align: center; margin-bottom: var(--s-12); }
.section-tag {
  display: inline-block; font-family: var(--font-display); font-size: 12px;
  font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--c-lila); margin-bottom: var(--s-3);
}
.section-title { font-size: clamp(28px, 4vw, 42px); margin-bottom: var(--s-4); }
.section-lead { font-size: 17px; color: var(--c-gris); max-width: 56ch; margin: 0 auto; }
.section-dark .section-lead { color: var(--c-v500); }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--s-2);
  padding: var(--s-3) var(--s-5); font-family: var(--font-body); font-size: 15px;
  font-weight: 500; border-radius: var(--r-md); border: 1.5px solid transparent;
  transition: all .2s ease; letter-spacing: .01em;
}
.btn-primary {
  background: var(--c-lila); color: var(--c-negro); border-color: var(--c-lila);
}
.btn-primary:hover { background: var(--c-white); border-color: var(--c-white); transform: translateY(-2px); }
.btn-ghost { background: transparent; color: var(--c-ash); border-color: var(--c-v700); }
.btn-ghost:hover { border-color: var(--c-lila); color: var(--c-lila); }
.btn-block { width: 100%; padding: var(--s-4) var(--s-5); font-size: 16px; }

/* ---- Navigation ---- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(1,1,1,.88); backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(87,84,92,.25);
}
.nav-inner {
  max-width: 1120px; margin: 0 auto; padding: 0 var(--s-5);
  display: flex; align-items: center; justify-content: space-between; height: 64px;
}
.logo { font-family: var(--font-display); font-size: 22px; font-weight: 600; letter-spacing: .02em; }
.logo-voz { color: var(--c-ash); }
.logo-d { color: var(--c-lila); }
.logo-igital { color: var(--c-ash); }

.nav-links { display: flex; gap: var(--s-6); align-items: center; }
.nav-links a {
  font-size: 14px; font-weight: 500; color: var(--c-v500);
  transition: color .15s; position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0;
  width: 0; height: 2px; background: var(--c-lila); transition: width .25s ease;
}
.nav-links a:hover { color: var(--c-ash); }
.nav-links a:hover::after { width: 100%; }
.nav-cta {
  background: var(--c-lila); color: var(--c-negro) !important;
  padding: var(--s-2) var(--s-4); border-radius: var(--r-sm);
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { background: var(--c-white); }

.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: var(--s-2); }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--c-ash); border-radius: 2px; transition: .3s; }

/* ---- Hero ---- */
.hero {
  position: relative; min-height: 100vh; display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center;
  background: var(--c-negro); color: var(--c-ash); overflow: hidden;
  padding: var(--s-20) var(--s-5) var(--s-10);
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse 60% 50% at 20% 30%, rgba(191,149,225,.08) 0%, transparent 70%),
    radial-gradient(ellipse 50% 40% at 80% 70%, rgba(84,120,255,.06) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 50% 50%, rgba(67,64,171,.04) 0%, transparent 70%);
}
.hero-content { position: relative; z-index: 1; max-width: 800px; }
.hero-label {
  font-family: var(--font-display); font-size: 12px; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase; color: var(--c-lila); margin-bottom: var(--s-4);
}
.hero-title { font-size: clamp(36px, 6vw, 64px); font-weight: 600; margin-bottom: var(--s-5); }
.hero-accent { color: var(--c-lila); }
.hero-sub { font-size: 17px; color: var(--c-v500); margin-bottom: var(--s-8); max-width: 56ch; margin-left: auto; margin-right: auto; }
.hero-actions { display: flex; gap: var(--s-4); justify-content: center; margin-bottom: var(--s-12); flex-wrap: wrap; }

.hero-stats {
  display: flex; justify-content: center; gap: var(--s-10); flex-wrap: wrap;
}
.stat { text-align: center; }
.stat-num { font-family: var(--font-display); font-size: 36px; font-weight: 600; color: var(--c-lila); }
.stat-suffix { font-family: var(--font-display); font-size: 20px; font-weight: 500; color: var(--c-lila); }
.stat-label { display: block; font-size: 13px; color: var(--c-v600); margin-top: var(--s-2); max-width: 140px; margin-left: auto; margin-right: auto; }

.scroll-hint {
  position: absolute; bottom: var(--s-6); left: 50%; transform: translateX(-50%);
  width: 24px; height: 36px; border: 2px solid var(--c-v700); border-radius: 12px;
  display: flex; justify-content: center;
}
.scroll-hint span {
  width: 4px; height: 8px; background: var(--c-lila); border-radius: 2px;
  margin-top: 6px; animation: scrollWheel 1.8s infinite ease-in-out;
}
@keyframes scrollWheel { 0%, 100% { transform: translateY(0); opacity: 1; } 50% { transform: translateY(10px); opacity: .3; } }

/* ---- Services ---- */
.services-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: var(--s-5);
}
.service-card {
  background: rgba(255,255,255,.03); border: 1px solid rgba(87,84,92,.25);
  border-radius: var(--r-lg); padding: var(--s-6); transition: all .25s ease;
}
.service-card:hover { border-color: var(--c-lila); transform: translateY(-4px); background: rgba(255,255,255,.05); }
.service-icon {
  width: 44px; height: 44px; color: var(--c-lila); margin-bottom: var(--s-4);
}
.service-card h3 { font-size: 20px; margin-bottom: var(--s-3); color: var(--c-ash); }
.service-card p { font-size: 14px; color: var(--c-v500); margin-bottom: var(--s-4); line-height: 1.55; }
.service-list { margin-bottom: var(--s-4); }
.service-list li {
  font-size: 13px; color: var(--c-v500); padding-left: var(--s-4); position: relative; margin-bottom: var(--s-2);
}
.service-list li::before {
  content: ''; position: absolute; left: 0; top: 8px; width: 5px; height: 5px;
  background: var(--c-lila); border-radius: 50%;
}
.service-more {
  font-size: 13px; font-weight: 500; color: var(--c-lila);
  border-bottom: 1px solid transparent; padding-bottom: 1px;
  transition: border-color .2s;
}
.service-more:hover { border-color: var(--c-lila); }

/* ---- Process ---- */
.process-steps { display: flex; flex-direction: column; gap: var(--s-6); max-width: 800px; margin: 0 auto; }
.step {
  display: flex; gap: var(--s-5); align-items: flex-start;
  padding: var(--s-5); border-radius: var(--r-lg);
  border: 1px solid rgba(87,84,92,.12); transition: all .2s;
}
.step:hover { border-color: var(--c-lila); background: rgba(191,149,225,.03); }
.step-num {
  font-family: var(--font-display); font-size: 28px; font-weight: 600;
  color: var(--c-lila); min-width: 48px; text-align: center; line-height: 1;
}
.step-body h3 { font-size: 18px; margin-bottom: var(--s-2); }
.step-body p { font-size: 15px; color: var(--c-gris); line-height: 1.55; }

/* ---- Impact ---- */
.impact-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: var(--s-5);
}
.impact-card {
  background: rgba(255,255,255,.03); border: 1px solid rgba(87,84,92,.2);
  border-radius: var(--r-lg); padding: var(--s-6); text-align: center; transition: .25s;
}
.impact-card:hover { border-color: var(--c-lila); transform: translateY(-3px); }
.impact-value { font-family: var(--font-display); font-size: 42px; font-weight: 600; color: var(--c-lila); line-height: 1; margin-bottom: var(--s-3); }
.impact-value span { font-size: 22px; font-weight: 500; }
.impact-label { font-size: 15px; font-weight: 500; color: var(--c-ash); margin-bottom: var(--s-2); }
.impact-desc { font-size: 13px; color: var(--c-v600); line-height: 1.5; }

/* ---- Stack ---- */
.stack-categories { display: flex; flex-direction: column; gap: var(--s-6); }
.stack-group h4 {
  font-family: var(--font-display); font-size: 14px; font-weight: 600;
  letter-spacing: .08em; text-transform: uppercase; color: var(--c-gris); margin-bottom: var(--s-3);
}
.stack-chips { display: flex; flex-wrap: wrap; gap: var(--s-2); }
.chip {
  display: inline-block; padding: var(--s-2) var(--s-3); font-size: 13px; font-weight: 500;
  color: var(--c-v800); background: var(--c-ash); border-radius: var(--r-sm);
  border: 1px solid rgba(87,84,92,.15); transition: .15s;
}
.chip:hover { background: var(--c-lila); color: var(--c-negro); border-color: var(--c-lila); }

/* ---- Contact ---- */
.section-contact { background: var(--c-v900); color: var(--c-ash); }
.contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-10); align-items: start; }
.contact-info .section-title { text-align: left; margin-bottom: var(--s-4); }
.contact-info .section-lead { text-align: left; margin: 0 0 var(--s-6) 0; color: var(--c-v500); }
.contact-links { display: flex; flex-direction: column; gap: var(--s-3); }
.contact-link {
  display: inline-flex; align-items: center; gap: var(--s-3); font-size: 14px; color: var(--c-v500);
  transition: color .15s;
}
.contact-link:hover { color: var(--c-lila); }
.contact-link svg { width: 20px; height: 20px; flex-shrink: 0; }

.contact-form {
  background: rgba(1,1,1,.4); border: 1px solid rgba(87,84,92,.25);
  border-radius: var(--r-lg); padding: var(--s-6);
}
.contact-form label { display: block; margin-bottom: var(--s-4); }
.contact-form label span { display: block; font-size: 13px; font-weight: 500; color: var(--c-v500); margin-bottom: var(--s-2); }
.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%; padding: var(--s-3); font-size: 15px; font-family: var(--font-body);
  background: rgba(255,255,255,.06); border: 1px solid rgba(87,84,92,.3);
  border-radius: var(--r-sm); color: var(--c-ash); outline: none; transition: .15s;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus { border-color: var(--c-lila); background: rgba(255,255,255,.09); }
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: var(--c-v600); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-4); }
.form-note { font-size: 12px; color: var(--c-v600); text-align: center; margin-top: var(--s-3); }

/* ---- Footer ---- */
.footer { background: var(--c-negro); color: var(--c-v600); padding: var(--s-10) 0; border-top: 1px solid rgba(87,84,92,.15); }
.footer-inner { display: flex; justify-content: space-between; align-items: flex-end; flex-wrap: wrap; gap: var(--s-5); }
.footer-brand { font-family: var(--font-display); font-size: 20px; }
.footer-brand p { font-family: var(--font-body); font-size: 13px; color: var(--c-v600); margin-top: var(--s-2); }
.footer-meta { font-size: 13px; text-align: right; }
.footer-meta a { color: var(--c-v500); transition: .15s; }
.footer-meta a:hover { color: var(--c-lila); }

/* ---- Modal ---- */
.modal { position: fixed; inset: 0; z-index: 2000; display: none; align-items: center; justify-content: center; padding: var(--s-5); }
.modal.active { display: flex; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(1,1,1,.75); backdrop-filter: blur(4px); }
.modal-panel { position: relative; background: var(--c-negro); border: 1px solid rgba(87,84,92,.3); border-radius: var(--r-lg); max-width: 560px; width: 100%; max-height: 80vh; overflow-y: auto; padding: var(--s-8); }
.modal-close { position: absolute; top: var(--s-4); right: var(--s-4); font-size: 28px; color: var(--c-v500); line-height: 1; }
.modal-close:hover { color: var(--c-ash); }
.modal-body h3 { font-size: 22px; color: var(--c-ash); margin-bottom: var(--s-4); }
.modal-body p { font-size: 15px; color: var(--c-v500); line-height: 1.6; margin-bottom: var(--s-4); }
.modal-body ul { margin-bottom: var(--s-4); }
.modal-body li { font-size: 14px; color: var(--c-v500); margin-bottom: var(--s-2); padding-left: var(--s-4); position: relative; }
.modal-body li::before { content: ''; position: absolute; left: 0; top: 8px; width: 5px; height: 5px; background: var(--c-lila); border-radius: 50%; }

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .nav-links {
    position: fixed; top: 64px; left: 0; right: 0; bottom: 0;
    background: rgba(1,1,1,.95); flex-direction: column; padding: var(--s-8) var(--s-5);
    gap: var(--s-6); transform: translateX(100%); transition: transform .3s ease;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-toggle { display: flex; }
  .hero-stats { gap: var(--s-6); }
  .contact-layout { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-meta { text-align: left; }
}