/* Piloto Clínico — landing styles (mobile-first)
   Brand tokens aligned with RUCH Digital (ruch.digital) */

:root {
  /* RUCH Digital brand */
  --green: #38ef7d;
  --green-dim: #2bc465;
  --teal-companion: #11998e;
  --bg: #070d0a;
  --bg-2: #0d1512;
  --bg-3: #121e18;
  --text: #f2f7f4;
  --text-2: #8fa39a;
  --border: #38ef7d1f;
  --glow: 0 0 24px #38ef7d40, 0 0 64px #38ef7d14;
  --shadow-card: 0 8px 32px #070d0a99, 0 0 0 1px var(--border);
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --radius-card: 20px;
  --radius-pill: 999px;
  --lf-error: #ff6b6b;

  /* Semantic aliases used across this stylesheet */
  --ink: var(--text);
  --ink-soft: var(--text-2);
  --muted: #6b8578;
  --line: var(--border);
  --paper: var(--bg);
  --white: var(--bg-2);
  --teal: var(--green);
  --teal-deep: var(--green-dim);
  --teal-soft: #38ef7d14;
  --sand: var(--bg-3);
  --sand-deep: #1a2a22;
  --accent: var(--green);
  --radius: 14px;
  --radius-lg: var(--radius-card);
  --shadow: var(--shadow-card);
  --shadow-sm: 0 4px 16px #070d0a66;
  --font: var(--font-display);
  --serif: var(--font-display);
  --max: 1120px;
  --narrow: 720px;
  --header-h: 72px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--green);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--green-dim);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--white);
  padding: 0.75rem 1rem;
  z-index: 1000;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.container.narrow {
  width: min(100% - 2rem, var(--narrow));
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(7, 13, 10, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--header-h);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--ink);
}

.brand:hover {
  color: var(--ink);
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background:
    linear-gradient(145deg, var(--green) 0%, var(--green-dim) 55%, var(--teal-companion) 100%);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12), var(--glow);
  position: relative;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 10px 8px 10px 16px;
  border-right: 2px solid rgba(255, 255, 255, 0.9);
  border-bottom: 2px solid rgba(255, 255, 255, 0.55);
  border-radius: 0 0 2px 0;
  transform: skewX(-12deg);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-text strong {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-text small {
  font-size: 0.72rem;
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav {
  display: none;
  gap: 1.35rem;
  align-items: center;
}

.nav a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.92rem;
  font-weight: 500;
}

.nav a:hover {
  color: var(--teal);
}

.header-cta {
  display: none;
}

.nav-toggle {
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-3);
  display: grid;
  place-content: center;
  gap: 6px;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

.nav-mobile {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.5rem 1rem 1.25rem;
  border-top: 1px solid var(--line);
  background: var(--paper);
}

.nav-mobile[hidden] {
  display: none;
}

.nav-mobile a {
  text-decoration: none;
  color: var(--ink);
  font-weight: 500;
  padding: 0.75rem 0.5rem;
  border-radius: 10px;
}

.nav-mobile a:hover {
  background: var(--teal-soft);
}

.nav-mobile .btn {
  margin-top: 0.5rem;
  text-align: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.2;
  padding: 0.85rem 1.35rem;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn-sm {
  padding: 0.65rem 1.1rem;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 1rem 1.55rem;
  font-size: 1rem;
}

.btn-block {
  width: 100%;
}

.btn-primary {
  background: var(--green);
  color: var(--bg);
  box-shadow: 0 8px 28px #38ef7d40;
}

.btn-primary:hover {
  background: var(--green-dim);
  color: var(--bg);
}

.btn-secondary {
  background: var(--white);
  color: var(--ink);
  border-color: var(--line);
}

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

.btn-ghost {
  background: transparent;
  color: var(--ink-soft);
  border-color: var(--line);
}

.btn-ghost:hover {
  border-color: var(--green);
  color: var(--green);
  background: #38ef7d0d;
}

/* Sections */
.section {
  padding: 4.5rem 0;
}

.section-head {
  max-width: 38rem;
  margin-bottom: 2.5rem;
}

.section-head h2 {
  margin: 0.35rem 0 0.75rem;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.85rem, 4vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.section-sub {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green);
}

/* Hero */
.hero {
  padding: 2.5rem 0 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -20% -10% auto auto;
  width: min(70vw, 520px);
  height: min(70vw, 520px);
  background: radial-gradient(circle, #38ef7d26, transparent 65%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

.hero-copy h1 {
  margin: 0.6rem 0 1rem;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.35rem, 7vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

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

.lede {
  margin: 0 0 1.75rem;
  color: var(--ink-soft);
  font-size: 1.12rem;
  max-width: 34rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}

.hero-trust {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.hero-trust li {
  position: relative;
  padding-left: 1.35rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.hero-trust li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 3px #38ef7d26;
}

.hero-card {
  background: linear-gradient(160deg, var(--bg-3) 0%, var(--bg-2) 100%);
  color: var(--white);
  border-radius: var(--radius-lg);
  padding: 0.4rem;
  box-shadow: var(--shadow);
}

.hero-card-inner {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: calc(var(--radius-lg) - 4px);
  padding: 1.75rem 1.5rem;
}

.hero-card-label {
  margin: 0 0 1.25rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
}

.hero-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.15rem;
}

.hero-card li {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
}

.hero-card .dot {
  width: 10px;
  height: 10px;
  margin-top: 0.4rem;
  border-radius: 50%;
  background: var(--green);
  flex-shrink: 0;
}

.hero-card strong {
  display: block;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
}

.hero-card small {
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.88rem;
}

.hero-card-foot {
  margin: 1.5rem 0 0;
  padding-top: 1.15rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.55);
}

/* Pains */
.pains {
  background: var(--bg-2);
  border-block: 1px solid var(--border);
}

.pain-grid {
  display: grid;
  gap: 1rem;
}

.pain-card {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.pain-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}

.pain-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

/* Steps */
.how {
  background:
    linear-gradient(180deg, #38ef7d0d, transparent 45%),
    var(--paper);
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
  counter-reset: none;
}

.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.35rem;
  box-shadow: var(--shadow-sm);
}

.step-num {
  font-family: var(--serif);
  font-size: 1.6rem;
  color: var(--teal);
  line-height: 1;
  min-width: 2.2rem;
}

.step h3 {
  margin: 0 0 0.35rem;
  font-size: 1.15rem;
}

.step p {
  margin: 0;
  color: var(--ink-soft);
}

/* Includes */
.includes .include-grid {
  display: grid;
  gap: 1rem;
}

.include-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.35rem;
}

.include-card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.08rem;
}

.include-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.not-included {
  margin: 1.75rem 0 0;
  padding: 1rem 1.15rem;
  background: var(--teal-soft);
  border-radius: 12px;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.not-included strong {
  color: var(--green);
}

/* Pricing */
.pricing {
  background: var(--bg-2);
  border-block: 1px solid var(--border);
}

.price-grid {
  display: grid;
  gap: 1.15rem;
  align-items: stretch;
}

.price-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
}

.price-card header {
  margin-bottom: 1.25rem;
}

.price-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
}

.price {
  margin: 0;
  font-size: 2.1rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.price span {
  font-size: 1rem;
  font-weight: 600;
  color: var(--muted);
  margin-right: 0.15rem;
}

.price small {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--muted);
}

.price-note {
  margin: 0.45rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.price-card ul {
  margin: 0 0 1.5rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.65rem;
  flex: 1;
}

.price-card li {
  position: relative;
  padding-left: 1.4rem;
  color: var(--ink-soft);
  font-size: 0.96rem;
}

.price-card li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--teal);
  font-weight: 700;
  font-size: 0.85rem;
}

.price-card .btn {
  width: 100%;
}

.price-card--anchor {
  background: linear-gradient(180deg, var(--bg-3), var(--bg));
  color: var(--white);
  border-color: transparent;
  box-shadow: var(--shadow);
  transform: none;
}

.price-card--anchor h3,
.price-card--anchor .price {
  color: var(--white);
}

.price-card--anchor .price span,
.price-card--anchor .price small,
.price-card--anchor .price-note,
.price-card--anchor li {
  color: rgba(255, 255, 255, 0.72);
}

.price-card--anchor li::before {
  color: var(--green);
}

.badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  margin: 0;
  background: var(--green);
  color: var(--bg);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
}

.setup-note {
  margin: 1.5rem 0 0;
  text-align: center;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Social proof */
.quote-grid {
  display: grid;
  gap: 1rem;
}

.quote-card {
  margin: 0;
  background: var(--bg-2);
  border: 1px dashed #38ef7d33;
  border-radius: var(--radius);
  padding: 1.5rem;
}

.quote-card p {
  margin: 0 0 1rem;
  font-family: var(--serif);
  font-size: 1.2rem;
  line-height: 1.35;
  color: var(--ink-soft);
}

.quote-card footer {
  color: var(--muted);
  font-size: 0.9rem;
}

/* FAQ */
.faq-list {
  display: grid;
  gap: 0.65rem;
}

.faq-item {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.15rem 1rem;
}

.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  padding: 1rem 0;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 1.25rem;
  color: var(--teal);
  font-weight: 500;
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item p {
  margin: 0 0 1rem;
  color: var(--ink-soft);
  padding-right: 1.5rem;
}

/* CTA + form */
.cta-final {
  background:
    radial-gradient(ellipse at top, #38ef7d26, transparent 55%),
    linear-gradient(180deg, var(--bg-3), var(--bg));
  color: var(--text);
}

.cta-final .eyebrow {
  color: var(--green);
}

.cta-final h2 {
  color: var(--white);
}

.cta-final .cta-copy > p {
  color: rgba(255, 255, 255, 0.75);
  max-width: 32rem;
}

.cta-grid {
  display: grid;
  gap: 2.5rem;
  align-items: start;
}

.cta-points {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.cta-points li {
  position: relative;
  padding-left: 1.35rem;
  color: rgba(255, 255, 255, 0.8);
}

.cta-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--green);
}

.diag-form {
  background: var(--bg-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  display: grid;
  gap: 1rem;
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink-soft);
}

.field input,
.field select {
  width: 100%;
  font: inherit;
  padding: 0.85rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--paper);
  color: var(--ink);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field input:focus,
.field select:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px #38ef7d26;
  background: var(--white);
}

.field input.invalid,
.field select.invalid {
  border-color: #b5472e;
  box-shadow: 0 0 0 3px rgba(181, 71, 46, 0.12);
}

.form-error {
  margin: 0;
  color: #b5472e;
  font-size: 0.9rem;
  font-weight: 500;
}

.field select option {
  background: var(--bg-3);
  color: var(--text);
}

.form-hint {
  margin: 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
}

/* Footer */
.site-footer {
  background: var(--bg);
  color: var(--text-2);
  padding: 2.5rem 0 1.5rem;
  font-size: 0.95rem;
}

.footer-inner {
  display: grid;
  gap: 1.5rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-inner strong {
  color: var(--white);
}

.footer-inner p {
  margin: 0.4rem 0 0;
  max-width: 28rem;
}

.footer-inner nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-inner a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
}

.footer-inner a:hover {
  color: var(--white);
}

.footer-bottom {
  padding-top: 1.25rem;
}

.footer-bottom p {
  margin: 0;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.45);
}

.footer-ruch {
  margin-top: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-2);
}

.footer-ruch a {
  color: var(--green);
  text-decoration: none;
  font-weight: 600;
}

.footer-ruch a:hover {
  text-decoration: underline;
}

.footer-contact {
  margin-top: 0.85rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.footer-contact a {
  color: var(--text-2);
  text-decoration: none;
}

.footer-contact a:hover {
  color: var(--green);
}

.brand-ruch {
  font-family: var(--font-mono);
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--green);
  font-size: 0.7rem;
}

/* Desktop */
@media (min-width: 768px) {
  .nav {
    display: flex;
  }

  .header-cta {
    display: inline-flex;
  }

  .nav-toggle {
    display: none;
  }

  .nav-mobile {
    display: none !important;
  }

  .hero {
    padding: 3.5rem 0 5rem;
  }

  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3rem;
  }

  .pain-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps {
    grid-template-columns: repeat(3, 1fr);
  }

  .step {
    grid-template-columns: 1fr;
    min-height: 100%;
  }

  .include-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .price-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    align-items: stretch;
  }

  .price-card--anchor {
    transform: scale(1.03);
    z-index: 1;
  }

  .quote-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .cta-grid {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
  }

  .diag-form {
    padding: 1.85rem;
  }

  .footer-inner {
    grid-template-columns: 1fr auto;
    align-items: end;
  }

  .section {
    padding: 5.5rem 0;
  }
}

@media (min-width: 1024px) {
  .include-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .header-inner {
    gap: 1.5rem;
  }
}

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

  .btn,
  .nav-toggle span {
    transition: none;
  }
}