/* ===== VARIABLES ===== */
:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --border: #334155;
  --primary: #2563eb;
  --primary-light: #60a5fa;
  --primary-dark: #1d4ed8;
  --green: #4ade80;
  --text: #f8fafc;
  --text-muted: #94a3b8;

  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.2s ease;

  --container: 1200px;
  --section-py: clamp(4rem, 8vw, 7rem);
}

/* ===== RESET ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg);
  color: var(--text);
  font-size: clamp(1rem, 1.2vw, 1.125rem);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ===== TIPOGRAFÍA ===== */
.headline {
  font-size: clamp(2.25rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.card-title {
  font-size: clamp(1.125rem, 1.5vw, 1.25rem);
  font-weight: 700;
  line-height: 1.3;
}

.label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary-light);
}

.text-muted {
  color: var(--text-muted);
}

.text-accent {
  color: var(--primary-light);
}

/* ===== CONTENEDOR ===== */
.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

/* ===== SECCIÓN BASE ===== */
.section {
  padding-block: var(--section-py);
}

/* ===== BOTONES ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 700;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  color: var(--text);
  border-color: var(--text-muted);
}

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: background var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--border);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 2rem;
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.navbar__brand {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.navbar__links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
}
.navbar__links a:hover {
  color: var(--text);
}

.navbar__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.navbar__burger {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  padding: 4px;
}

.navbar__mobile {
  display: none;
  padding: 1rem 1.5rem 1.5rem;
  background: var(--bg);
  border-top: 1px solid var(--border);
}
.navbar__mobile ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.navbar__mobile a {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-muted);
  display: block;
  padding: 4px 0;
}
.navbar__mobile.open {
  display: block;
}

@media (max-width: 768px) {
  .navbar__links { display: none; }
  .navbar__actions .btn-primary { display: none; }
  .navbar__burger { display: flex; }
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 68px;
  overflow: hidden;
}

.hero__grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--surface) 1px, transparent 1px),
    linear-gradient(90deg, var(--surface) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.5;
  pointer-events: none;
}

.hero__glow {
  position: absolute;
  top: -100px;
  right: -100px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37,99,235,0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero__inner {
  display: grid;
  grid-template-columns: 3fr 2fr;
  align-items: center;
  gap: 4rem;
  padding-block: clamp(4rem, 8vw, 6rem);
  position: relative;
  z-index: 1;
}

.hero__content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero__body {
  font-size: clamp(1rem, 1.3vw, 1.125rem);
  color: var(--text-muted);
  max-width: 520px;
  line-height: 1.75;
}

.hero__ctas {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* Metric cards */
.hero__metrics {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.metric-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
}

.metric-card__number {
  font-size: 48px;
  font-weight: 900;
  color: var(--primary-light);
  line-height: 1;
  margin-bottom: 6px;
}

.metric-card__label {
  font-size: 14px;
  color: var(--text-muted);
}

/* Hero responsive */
@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr;
  }
  .hero__metrics {
    flex-direction: row;
  }
  .metric-card {
    flex: 1;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero__metrics {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  .hero__metrics .metric-card:last-child {
    grid-column: 1 / -1;
  }
}

/* ===== SECTION HEADER ===== */
.section-header {
  text-align: center;
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: clamp(3rem, 5vw, 4rem);
}

/* ===== CÓMO FUNCIONA ===== */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  position: relative;
}

.step {
  position: relative;
  text-align: center;
  padding: 2rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.step__connector {
  display: none;
  position: absolute;
  top: 50px;
  left: 100%;
  width: calc(2rem + 2px);
  border-top: 1px dashed var(--border);
  z-index: 2;
}

.step:not(:last-child) .step__connector {
  display: block;
}

.step__icon-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(96, 165, 250, 0.3);
  border-radius: 14px;
  color: var(--primary-light);
  margin-inline: auto;
}

.step__icon-wrap svg {
  width: 24px;
  height: 24px;
}

.step__num {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--primary-light);
  margin-top: 1rem;
  opacity: 0.7;
}

@media (max-width: 768px) {
  .steps {
    grid-template-columns: 1fr;
  }
  .step__connector { display: none !important; }
}

/* ===== CASOS DE USO ===== */
.use-cases__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.use-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border-color var(--transition), transform var(--transition);
}

.use-card:hover {
  border-color: rgba(96, 165, 250, 0.4);
  transform: translateY(-2px);
}

.use-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: rgba(37, 99, 235, 0.15);
  border-radius: var(--radius-sm);
  color: var(--primary-light);
}

.use-card__icon svg {
  width: 20px;
  height: 20px;
}

.use-card__badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green);
  background: rgba(74, 222, 128, 0.1);
  border: 1px solid rgba(74, 222, 128, 0.2);
  border-radius: 999px;
  padding: 2px 10px;
  width: fit-content;
}

@media (max-width: 768px) {
  .use-cases__grid {
    grid-template-columns: 1fr;
  }
}

/* ===== BENEFICIOS ===== */
.benefits__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.benefit-item {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}

.benefit-item__icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(74, 222, 128, 0.1);
  border-radius: var(--radius-sm);
  color: var(--green);
  margin-top: 2px;
}

.benefit-item__icon svg {
  width: 20px;
  height: 20px;
}

@media (max-width: 768px) {
  .benefits__grid {
    grid-template-columns: 1fr;
  }
}

/* ===== SOCIAL PROOF ===== */
.social-proof__inner {
  text-align: center;
}

.stats-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3rem;
  margin-top: 3rem;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
}

.stat-item__number {
  font-size: clamp(3rem, 5vw, 4rem);
  font-weight: 900;
  color: var(--primary-light);
  line-height: 1;
}

.stat-item__label {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 6px;
}

.stat-divider {
  width: 1px;
  height: 48px;
  background: var(--border);
}

@media (max-width: 600px) {
  .stat-divider { display: none; }
  .stats-row { gap: 2rem; }
}

/* ===== CTA FINAL ===== */
.cta-final__card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: clamp(3rem, 6vw, 5rem) clamp(2rem, 5vw, 4rem);
  text-align: center;
}

/* ===== FOOTER ===== */
.footer {
  border-top: 1px solid var(--border);
  padding-block: 2.5rem;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer__nav {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer__nav a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer__nav a:hover {
  color: var(--text);
}

.footer__copy {
  font-size: 13px;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .footer__inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ===== FORMULARIO DE CONTACTO ===== */
.contact-form {
  max-width: 600px;
  margin: 2.5rem auto 0;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.contact-form__field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.contact-form__field label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.01em;
}

.contact-form__field input,
.contact-form__field textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  width: 100%;
  resize: vertical;
}

.contact-form__field input::placeholder,
.contact-form__field textarea::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

.contact-form__field input:focus,
.contact-form__field textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.contact-form__field input.error,
.contact-form__field textarea.error {
  border-color: #f87171;
}

.contact-form__footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.contact-form__submit {
  font-size: 15px;
  padding: 14px 40px;
  justify-content: center;
}

.contact-form__submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.contact-form__btn-text,
.contact-form__btn-loading {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.contact-form__hint {
  font-size: 13px;
  color: var(--text-muted);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}
.spin {
  animation: spin 0.8s linear infinite;
}

/* Éxito */
.contact-success {
  max-width: 480px;
  margin: 2.5rem auto 0;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.contact-success__icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(74, 222, 128, 0.1);
  border: 1px solid rgba(74, 222, 128, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--green);
}

.contact-success__icon svg {
  width: 32px;
  height: 32px;
}

.contact-success h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
}

/* Error */
.contact-error {
  max-width: 480px;
  margin: 1rem auto 0;
  text-align: center;
  font-size: 14px;
  color: #f87171;
}

.contact-error a {
  color: var(--primary-light);
  text-decoration: underline;
}

@media (max-width: 600px) {
  .contact-form__row {
    grid-template-columns: 1fr;
  }
  .contact-form__submit {
    width: 100%;
  }
}

/* ===== SECCIÓN ALTERNANTE ===== */
.how-it-works,
.benefits {
  background: rgba(30, 41, 59, 0.4);
}