/* ========================================================
   ZYNFLU LANDING PAGE — Styles
   Mobile-first · Inter font · Gradient brand
   ======================================================== */

/* CSS Reset minimal */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #0f172a;
  background: #fafafb;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

/* ========================================================
   DESIGN TOKENS
   ======================================================== */

:root {
  --blue: #2563eb;
  --purple: #7c3aed;
  --magenta: #d946ef;

  --text-1: #0f172a;
  --text-2: #475569;
  --text-3: #94a3b8;

  --bg-light: #fafafb;
  --bg-muted: #f8fafc;
  --bg-dark: #0f0f1a;
  --bg-dark-2: #1a1a2e;

  --border: #e2e8f0;
  --success: #10b981;

  --gradient: linear-gradient(135deg, #2563eb 0%, #7c3aed 50%, #d946ef 100%);
  --gradient-soft: linear-gradient(135deg, rgba(37,99,235,0.05) 0%, rgba(217,70,239,0.05) 100%);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 3px rgba(15,23,42,0.06), 0 1px 2px rgba(15,23,42,0.04);
  --shadow-md: 0 4px 12px rgba(15,23,42,0.08);
  --shadow-lg: 0 20px 40px rgba(15,23,42,0.10);
}

/* ========================================================
   CONTAINER
   ======================================================== */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  max-width: 720px;
}

/* ========================================================
   TYPOGRAPHY
   ======================================================== */

.eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--text-3);
  margin-bottom: 16px;
  text-transform: uppercase;
}

.eyebrow-dark { color: var(--text-3); }
.eyebrow-light { color: rgba(255,255,255,0.7); }
.eyebrow-accent { color: var(--magenta); }

.section-title {
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-1);
  margin-bottom: 20px;
}

.section-title-light { color: #ffffff; }

.section-intro {
  font-size: 18px;
  line-height: 1.6;
  color: var(--text-2);
  max-width: 720px;
  margin-bottom: 48px;
}

.section-intro-light {
  color: rgba(255,255,255,0.85);
}

/* ========================================================
   NAVIGATION
   ======================================================== */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250,250,251,0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid rgba(226,232,240,0.5);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-text {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a:not(.btn) {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  transition: color 0.2s;
}

.nav-links a:not(.btn):hover {
  color: var(--text-1);
}

@media (max-width: 640px) {
  .nav-links a:not(.btn) { display: none; }
}

/* ========================================================
   BUTTONS
   ======================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  text-decoration: none;
  line-height: 1;
}

.btn-large {
  padding: 16px 32px;
  font-size: 16px;
}

.btn-small {
  padding: 8px 16px;
  font-size: 13px;
}

.btn-block {
  width: 100%;
}

.btn-primary {
  background: var(--gradient);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(124,58,237,0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(124,58,237,0.45);
}

.btn-purple {
  background: var(--purple);
  color: #ffffff;
}

.btn-purple:hover {
  background: #6d28d9;
  transform: translateY(-2px);
}

.btn-magenta {
  background: var(--magenta);
  color: #ffffff;
}

.btn-magenta:hover {
  background: #c026d3;
  transform: translateY(-2px);
}

/* ========================================================
   HERO
   ======================================================== */

.hero {
  position: relative;
  padding: 80px 0 100px;
  background: var(--gradient);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.1), transparent 40%),
    radial-gradient(circle at 20% 80%, rgba(255,255,255,0.08), transparent 40%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  text-align: center;
}

.hero .eyebrow {
  color: rgba(255,255,255,0.85);
}

.hero-title {
  font-size: clamp(40px, 7vw, 76px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: #ffffff;
  margin-bottom: 24px;
}

.hero-highlight {
  display: inline-block;
  position: relative;
}

.hero-highlight::after {
  content: '';
  position: absolute;
  bottom: 6px;
  left: 0;
  right: 0;
  height: 8px;
  background: rgba(255,255,255,0.3);
  border-radius: 4px;
  z-index: -1;
}

.hero-sub {
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.6;
  color: rgba(255,255,255,0.92);
  max-width: 720px;
  margin: 0 auto 40px;
}

.hero-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.hero-cta .btn-primary {
  background: #ffffff;
  color: var(--purple);
}

.hero-cta .btn-primary:hover {
  background: #fafafb;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.hero-trust {
  font-size: 13px;
  color: rgba(255,255,255,0.75);
}

/* ========================================================
   SECTIONS
   ======================================================== */

.section {
  padding: 80px 0;
}

@media (max-width: 640px) {
  .section { padding: 60px 0; }
  .hero { padding: 60px 0 80px; }
}

.section-light { background: #ffffff; }
.section-muted { background: var(--bg-muted); }
.section-dark { background: var(--bg-dark); color: #ffffff; }

.section-gradient {
  background: var(--gradient);
  color: #ffffff;
  position: relative;
  overflow: hidden;
}

.section-gradient::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 90% 10%, rgba(255,255,255,0.08), transparent 50%);
  pointer-events: none;
}

/* ========================================================
   CARDS (3-up)
   ======================================================== */

.cards-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 900px) {
  .cards-3 { grid-template-columns: 1fr; gap: 20px; }
}

.card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card-dark {
  background: var(--bg-dark-2);
  border-color: rgba(255,255,255,0.08);
}

.card-icon {
  font-size: 32px;
  margin-bottom: 16px;
  line-height: 1;
}

.card-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-1);
}

.card-dark .card-title { color: #ffffff; }

.card-text {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-2);
}

.card-dark .card-text { color: rgba(255,255,255,0.7); }

/* ========================================================
   STEPS (Cómo funciona)
   ======================================================== */

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 32px;
}

@media (max-width: 900px) {
  .steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 540px) {
  .steps { grid-template-columns: 1fr; }
}

.step {
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 28px 24px;
  border: 1px solid var(--border);
  position: relative;
}

.step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  color: #ffffff;
  font-weight: 800;
  font-size: 16px;
  margin-bottom: 16px;
}

.step-num-1 { background: var(--blue); }
.step-num-2 { background: var(--purple); }
.step-num-3 { background: #a855f7; }
.step-num-4 { background: var(--magenta); }

.step-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-text {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.55;
}

/* ========================================================
   COMPARISON TABLE
   ======================================================== */

.table-wrapper {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  overflow: hidden;
  margin-top: 32px;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
}

.comparison-table th,
.comparison-table td {
  padding: 18px 20px;
  text-align: left;
  font-size: 15px;
  border-bottom: 1px solid var(--border);
}

.comparison-table th {
  background: var(--bg-muted);
  font-weight: 700;
  color: var(--text-2);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.comparison-table tbody tr:last-child td {
  border-bottom: none;
}

.comparison-table td:first-child {
  font-weight: 500;
  color: var(--text-1);
}

.th-highlight {
  background: var(--gradient-soft) !important;
  color: var(--purple) !important;
}

.td-highlight {
  background: var(--gradient-soft);
  font-weight: 600;
}

.check { color: var(--success); font-weight: 700; }
.x { opacity: 0.5; }
.partial { color: #f59e0b; font-size: 13px; }

@media (max-width: 640px) {
  .comparison-table th,
  .comparison-table td {
    padding: 12px 14px;
    font-size: 13px;
  }
}

/* ========================================================
   LARGE CARDS (Para vos)
   ======================================================== */

.card-large {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
}

.card-large:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-marca { border-top: 4px solid var(--blue); }
.card-creator { border-top: 4px solid var(--purple); }
.card-inversor { border-top: 4px solid var(--magenta); }

.card-emoji {
  font-size: 36px;
  margin-bottom: 16px;
  line-height: 1;
}

.card-large-title {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 12px;
}

.card-large-text {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.6;
  margin-bottom: 20px;
}

.card-list {
  margin-bottom: 24px;
  flex-grow: 1;
}

.card-list li {
  font-size: 14px;
  color: var(--text-2);
  padding: 6px 0 6px 24px;
  position: relative;
}

.card-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: 700;
}

/* ========================================================
   FOUNDERS
   ======================================================== */

.founders {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  margin: 48px 0 32px;
}

@media (max-width: 640px) {
  .founders { grid-template-columns: 1fr; }
}

.founder {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.founder-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--gradient);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 20px;
}

.founder-name {
  font-size: 18px;
  font-weight: 700;
}

.founder-role {
  font-size: 14px;
  color: var(--text-2);
}

.founders-text {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-2);
  max-width: 720px;
}

.founders-text a {
  color: var(--purple);
  font-weight: 600;
}

/* ========================================================
   FORMULARIO
   ======================================================== */

.form {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-lg);
  padding: 40px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

@media (max-width: 640px) {
  .form { padding: 28px 20px; }
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  font-family: inherit;
  font-size: 15px;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.95);
  color: var(--text-1);
  transition: all 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #ffffff;
  box-shadow: 0 0 0 3px rgba(255,255,255,0.2);
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

.form-conditional {
  display: none;
}

.form-conditional.show {
  display: block;
}

#form-submit {
  background: #ffffff;
  color: var(--purple);
  margin-top: 12px;
}

#form-submit:hover {
  background: #fafafb;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

#form-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.form-disclaimer {
  font-size: 12px;
  color: rgba(255,255,255,0.75);
  text-align: center;
  margin-top: 16px;
}

.form-disclaimer a {
  color: #ffffff;
  text-decoration: underline;
}

/* Success state */
.form-success {
  text-align: center;
  padding: 48px 24px;
}

.success-icon {
  font-size: 64px;
  margin-bottom: 16px;
}

.success-title {
  font-size: 32px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
}

.success-text {
  font-size: 16px;
  color: rgba(255,255,255,0.9);
  margin-bottom: 8px;
}

.success-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
}

.success-links a {
  display: inline-block;
  color: #ffffff;
  font-weight: 600;
  text-decoration: underline;
}

/* ========================================================
   FOOTER
   ======================================================== */

.footer {
  background: var(--bg-dark);
  color: #ffffff;
  padding: 60px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 540px) {
  .footer-grid { grid-template-columns: 1fr; }
}

.footer-logo {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 8px;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-tagline {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  max-width: 320px;
}

.footer-col h4 {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
  color: rgba(255,255,255,0.5);
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col a {
  font-size: 14px;
  color: rgba(255,255,255,0.8);
  transition: color 0.2s;
}

.footer-col a:hover {
  color: #ffffff;
}

.footer-bottom {
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}