/* ==========================================================================
   Newdria — Landing page
   Estilo: educativo, formal, moderno. Animaciones sutiles.
   ========================================================================== */

:root {
  /* Paleta de marca Newdria */
  --color-brand: #8700bc;
  --color-brand-dark: #6a0094;
  --color-brand-tint: #f6ecfa;

  --color-navy-900: var(--color-brand);
  --color-navy-700: var(--color-brand-dark);
  --color-navy-500: var(--color-brand);
  --color-teal-500: var(--color-brand);
  --color-teal-600: var(--color-brand-dark);
  --color-ink: #111111;
  --color-body: #1a1a1a;
  --color-bg: #ffffff;
  --color-bg-muted: var(--color-brand-tint);
  --color-border: #e7dcee;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 6rem;

  --radius-md: 10px;
  --radius-lg: 16px;

  --transition-base: 0.5s ease;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-body);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  color: var(--color-ink);
  font-weight: 700;
  line-height: 1.25;
  margin: 0 0 var(--space-2);
}

h1 { font-size: clamp(2rem, 4vw + 1rem, 3.25rem); }
h2 { font-size: clamp(1.6rem, 2vw + 1rem, 2.25rem); text-align: center; }
h3 { font-size: 1.15rem; }

p { margin: 0 0 var(--space-2); }

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 var(--space-3);
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-2);
  padding-bottom: var(--space-2);
}

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

.logo__img {
  height: 28px;
  width: auto;
  display: block;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
  text-align: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
}

.btn--primary {
  background: var(--color-teal-500);
  color: #ffffff;
  padding: 0.9rem 1.75rem;
}

.btn--primary:hover {
  background: var(--color-teal-600);
  box-shadow: 0 8px 24px rgba(135, 0, 188, 0.28);
  transform: translateY(-2px);
}

.btn--small {
  padding: 0.55rem 1.1rem;
  font-size: 0.9rem;
  background: var(--color-navy-900);
  color: #fff;
}

.btn--small:hover {
  background: var(--color-navy-700);
}

.btn--large {
  padding: 1.1rem 2.25rem;
  font-size: 1.05rem;
}

/* ---------- Hero ---------- */

.hero {
  padding: var(--space-6) 0 var(--space-5);
  background:
    radial-gradient(1200px 480px at 50% -10%, rgba(135, 0, 188, 0.10), transparent 60%),
    linear-gradient(180deg, var(--color-bg-muted), var(--color-bg));
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  align-items: center;
}

@media (min-width: 860px) {
  .hero__grid {
    grid-template-columns: 1.05fr 0.95fr;
  }

  .hero__content { text-align: left; }
}

.hero__content {
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}

@media (min-width: 860px) {
  .hero__content { margin: 0; }
}

.hero__visual {
  display: flex;
  justify-content: center;
}

.hero__illustration {
  width: 100%;
  max-width: 360px;
  height: auto;
}

.hero__illustration-bg {
  fill: rgba(135, 0, 188, 0.08);
}

.hero__bubble {
  fill: #ffffff;
  stroke: var(--color-border);
  stroke-width: 1;
  filter: drop-shadow(0 10px 20px rgba(135, 0, 188, 0.08));
}

.hero__bubble--b {
  fill: var(--color-navy-900);
  stroke: none;
}

.hero__dot { fill: var(--color-navy-500); }
.hero__dot--alt { fill: rgba(135, 0, 188, 0.35); }

.eyebrow {
  color: var(--color-ink);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.85rem;
  margin-bottom: var(--space-2);
}

.hero__subhead {
  font-size: 1.15rem;
  color: var(--color-body);
  margin-bottom: var(--space-4);
}

/* ---------- Sections ---------- */

.section {
  padding: var(--space-6) 0;
}

.section--muted {
  background: var(--color-bg-muted);
}

.lead {
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
  font-size: 1.1rem;
  color: var(--color-ink);
}

/* ---------- Card grid ---------- */

.card-grid {
  list-style: none;
  margin: var(--space-5) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: var(--space-3);
}

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.section--muted .card {
  background: #ffffff;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(135, 0, 188, 0.08);
}

.card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  background: rgba(135, 0, 188, 0.12);
  color: var(--color-teal-600);
  margin-bottom: var(--space-2);
}

.card__icon svg {
  width: 1.4rem;
  height: 1.4rem;
}

.card h3 {
  color: var(--color-ink);
}

.card p {
  margin: 0;
  font-size: 0.98rem;
}

/* ---------- Steps ---------- */

.steps {
  list-style: none;
  margin: var(--space-5) 0 0;
  padding: 0;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.steps__item {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}

.steps__number {
  flex: none;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--color-navy-900);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.steps__item h3 {
  margin-bottom: 0.25rem;
}

.steps__item p {
  margin: 0;
}

.steps--compact {
  gap: var(--space-3);
}

/* ---------- Statement card (filosofía, no es una cita) ---------- */

.statement-card {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-brand);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-4);
  box-shadow: 0 20px 45px rgba(135, 0, 188, 0.08);
}

.statement-card__text {
  max-width: 560px;
  margin: 0 auto var(--space-3);
  font-size: 1.15rem;
  color: var(--color-ink);
}

.statement-card__slogan {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-ink);
  font-style: italic;
  margin: 0;
}

/* ---------- FAQ ---------- */

.faq-list {
  max-width: 720px;
  margin: var(--space-5) auto 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
}

.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--color-ink);
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  float: right;
  color: var(--color-ink);
  font-weight: 700;
  transition: transform var(--transition-base);
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  margin: var(--space-2) 0 0;
}

/* ---------- Closing ---------- */

.closing {
  text-align: center;
  background:
    radial-gradient(900px 400px at 50% 110%, rgba(135, 0, 188, 0.12), transparent 60%),
    var(--color-bg);
}

.closing__slogan {
  color: var(--color-ink);
  font-weight: 700;
  font-style: italic;
  margin-bottom: var(--space-2);
}

.closing h2 {
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--space-4);
}

.closing__form {
  max-width: 560px;
  margin: 0 auto;
  text-align: left;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: 0 20px 45px rgba(135, 0, 188, 0.08);
}

/* ---------- Footer ---------- */

.site-footer {
  padding: var(--space-4) 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-body);
}

/* ---------- Scroll reveal (sutil) ---------- */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .btn, .card, .faq-item summary::after {
    transition: none;
  }
}

/* ---------- Responsive ---------- */

@media (max-width: 600px) {
  .site-header__inner { gap: var(--space-2); }
  .steps__item { gap: var(--space-2); }
}