:root {
  /* ─── Paleta ─── */
  
  --bg-primary:        #FFFFFF;
  --bg-secondary:      #F5F5F7;
  --bg-tertiary:       #FAFAFA;
  --text-primary:      #1D1D1F;
  --text-secondary:    #86868B;
  --text-tertiary:     #B0B0B6;
  --accent:            #E8A0A0;
  --accent-hover:      #D48888;
  --accent-light:      #F5E6E6;
  --border-light:      #E8E8ED;
  --border-medium:     #D2D2D7;
  --overlay:           rgba(0,0,0,.04);
  --shadow-sm:         0 1px 3px rgba(0,0,0,.04);
  --shadow-md:         0 4px 20px rgba(0,0,0,.06);
  --shadow-lg:         0 12px 40px rgba(0,0,0,.08);
  --shadow-xl:         0 24px 60px rgba(0,0,0,.12);

  /* ─── Tipografía ─── */
  --font-sans:   -apple-system, BlinkMacSystemFont, 'SF Pro Display',
                 'SF Pro Text', 'Helvetica Neue', sans-serif;
  --font-display: 'SF Pro Display', var(--font-sans);

  --text-hero:     clamp(2.8rem, 6vw, 4.5rem);
  --text-display:  clamp(2.25rem, 4.5vw, 3.2rem);
  --text-title:    clamp(1.5rem, 2.5vw, 2rem);
  --text-subtitle: clamp(1.125rem, 1.5vw, 1.5rem);
  --text-body:     1.0625rem;
  --text-caption:  0.875rem;
  --text-small:    0.75rem;

  --weight-light:   300;
  --weight-regular: 400;
  --weight-medium:  500;
  --weight-semibold: 600;
  --weight-bold:    700;

  --tracking-tight:  -0.025em;
  --tracking-body:    0.012em;
  --tracking-wide:    0.08em;

  --leading-tight:   1.1;
  --leading-body:    1.6;
  --leading-display: 1.05;

  /* ─── Espaciado ─── */
  --space-xs:   0.5rem;
  --space-sm:   1rem;
  --space-md:   2rem;
  --space-lg:   4rem;
  --space-xl:   6rem;
  --space-2xl:  8rem;
  --space-3xl:  12rem;

  /* ─── Curvas Apple ─── */
  --ease-smooth:   cubic-bezier(0.32, 0.94, 0.6, 1);
  --ease-spring:   cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out:      cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-in-out:   cubic-bezier(0.42, 0, 0.58, 1);
  --duration-slow: 0.8s;
  --duration-base: 0.5s;
  --duration-fast: 0.3s;

  /* ─── Layout ─── */
  --max-width:     1200px;
  --max-width-wide: 1400px;
  --nav-height:    48px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-body);
  font-weight: var(--weight-regular);
  line-height: var(--leading-body);
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow-x: hidden;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

/* ─── Contenedores ─── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container--wide {
  max-width: var(--max-width-wide);
}

.section {
  padding: var(--space-2xl) 0;
}

.section--hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ─── Tipografía util ─── */
.headline-hero {
  font-size: var(--text-hero);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-display);
}

.headline-display {
  font-size: var(--text-display);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-display);
}

.headline-title {
  font-size: var(--text-title);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-tight);
}

.text-body {
  font-size: var(--text-body);
  color: var(--text-secondary);
  line-height: var(--leading-body);
}

.text-caption {
  font-size: var(--text-caption);
  color: var(--text-secondary);
}

.badge {
  display: inline-block;
  font-size: var(--text-caption);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-sm);
}

/* ─── Animaciones ─── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to   { opacity: 1; transform: scale(1); }
}

.fade-in {
  animation: fadeIn var(--duration-base) var(--ease-smooth) forwards;
}

.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease-smooth),
              transform var(--duration-slow) var(--ease-smooth);
}

.fade-up.is-visible {
  padding: 10px 0px;
  justify-content: space-between;
  display: flex;
  flex-direction: column;
  height: 385px;
  opacity: 1;
  transform: translateY(0);
}

/* ─── Stagger children ─── */
.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-base) var(--ease-smooth),
              transform var(--duration-base) var(--ease-smooth);
}

.stagger-children.is-visible > * {
  opacity: 1;
  transform: translateY(0);
}

.stagger-children.is-visible > *:nth-child(1) { transition-delay: 0s; }
.stagger-children.is-visible > *:nth-child(2) { transition-delay: 0.1s; }
.stagger-children.is-visible > *:nth-child(3) { transition-delay: 0.2s; }
.stagger-children.is-visible > *:nth-child(4) { transition-delay: 0.3s; }
.stagger-children.is-visible > *:nth-child(5) { transition-delay: 0.4s; }
.stagger-children.is-visible > *:nth-child(6) { transition-delay: 0.5s; }

/* ─── Toast ─── */
.toast-container {
  position: fixed;
  top: var(--space-lg);
  right: var(--space-md);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  padding: var(--space-sm) var(--space-md);
  border-radius: 12px;
  background: var(--text-primary);
  color: var(--bg-primary);
  font-size: var(--text-caption);
  font-weight: var(--weight-medium);
  box-shadow: var(--shadow-lg);
  animation: scaleIn var(--duration-fast) var(--ease-spring);
  max-width: 360px;
}

.toast--error {
  background: #E74C3C;
}

.toast--success {
  background: #27AE60;
}

.toast--warning {
  background: #F39C12;
}

/* ─── Splash / Loading Screen ─── */
#splash {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  transition: opacity 0.6s var(--ease-smooth);
  pointer-events: none;
}
#splash.is-hidden {
  opacity: 0;
}
.splash__content {
  text-align: center;
}
.splash__logo {
  width: 150px;
  height: 150px;
  object-fit: cover;
  border-radius: 50%;
  margin: 0 auto var(--space-md);
  display: block;
}
.splash__brand {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-tight);
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
}
.splash__dots {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.splash__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  animation: splashDot 1.4s var(--ease-smooth) infinite both;
}
.splash__dot:nth-child(1) { animation-delay: 0s; }
.splash__dot:nth-child(2) { animation-delay: 0.2s; }
.splash__dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes splashDot {
  0%, 80%, 100% { opacity: 0.2; transform: scale(0.8); }
  40%           { opacity: 1;   transform: scale(1); }
}

/* ─── Spinner ─── */
@keyframes spin {
  to { transform: rotate(360deg); }
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-light);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  display: inline-block;
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-medium);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}

/* ─── Selection ─── */
::selection {
  background: var(--accent-light);
  color: var(--text-primary);
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  :root {
    --nav-height: 44px;
    --space-2xl: 4rem;
    --space-xl: 3rem;
    --space-lg: 2rem;
    --space-md: 1.25rem;
  }

  .container {
    padding: 0 var(--space-sm);
  }
  

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

  .section--hero {
    min-height: 90vh;
  }
}

@media (max-width: 480px) {
  .section--hero {
    min-height: 85vh;
  }
}