/* ==========================================================================
   AURA STUDIO — APPLE DESIGN & EMIL KOWALSKI CRAFT SYSTEM
   - Authentic Apple aesthetic: Deep obsidian canvas, titanium materials, hairline borders
   - SF Pro typography system with optical tracking & tight line heights
   - Emil Kowalski micro-interactions: cubic-bezier(0.23, 1, 0.32, 1) and scale(0.97) press states
   - Translucent frosted glass layers (backdrop-filter blur + saturation)
   - Zero-latency tactile controls & Apple Bento grid architecture
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  /* Apple Palette & Materials */
  --apple-black: #000000;
  --apple-dark: #0A0A0C;
  --apple-surface: rgba(22, 22, 26, 0.7);
  --apple-surface-hover: rgba(32, 32, 38, 0.85);
  --apple-card: rgba(18, 18, 22, 0.65);
  --apple-chrome: rgba(0, 0, 0, 0.75);
  
  /* Hairline Borders & Highlights */
  --border-hairline: rgba(255, 255, 255, 0.09);
  --border-subtle: rgba(255, 255, 255, 0.14);
  --border-focus: #0071E3; /* Apple Blue */

  /* Text Roles (Strictly WCAG AAA on dark) */
  --text-primary: #F5F5F7;
  --text-secondary: #A1A1A6;
  --text-tertiary: #86868B;
  
  /* Apple Accents */
  --apple-blue: #0071E3;
  --apple-blue-hover: #0077ED;
  --apple-cyan: #2997FF;
  --apple-emerald: #30D158;
  --apple-error: #FF453A;
  --apple-error-bg: rgba(255, 69, 58, 0.12);

  /* Emil Kowalski Animation Tokens */
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-spring: cubic-bezier(0.32, 0.72, 0, 1);
  --duration-fast: 160ms;
  --duration-medium: 240ms;
  
  /* Geometry */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 9999px;
  --header-height: 52px; /* Apple standard clean slim bar */
}

/* ==========================================================================
   BROWSER SURFACES & SELECTION
   ========================================================================== */
::selection {
  background-color: var(--apple-blue);
  color: #FFFFFF;
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--apple-black);
}

::-webkit-scrollbar-thumb {
  background: #2C2C2E;
  border-radius: var(--radius-pill);
}

::-webkit-scrollbar-thumb:hover {
  background: #3A3A3C;
}

:focus-visible {
  outline: 2px solid var(--apple-cyan);
  outline-offset: 3px;
}

::placeholder {
  color: var(--text-tertiary);
  opacity: 1;
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

/* Apple Typography Scale — Tuned for Natural, Compact Reading */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  background-color: var(--apple-black);
  color: var(--text-primary);
  line-height: 1.6;
  text-align: start;
  overflow-x: hidden;
  padding-top: var(--header-height);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "SF Pro Display", sans-serif;
  font-weight: 700;
  letter-spacing: -0.02em; /* Sutil y compacto, sin sensación de estiramiento */
  color: var(--text-primary);
  text-wrap: balance;
  line-height: 1.25; /* Holgura suficiente para que las colas de 'g', 'p', 'y', 'q' respiren */
}

p, li, .prose {
  text-wrap: pretty;
  max-width: 54ch; /* Medida de lectura óptima, evita líneas estiradas */
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.6;
  letter-spacing: -0.006em; /* Letra natural y fluida para lectura cómoda */
}

.tabular-numbers {
  font-variant-numeric: tabular-nums;
}

.container {
  width: 100%;
  max-width: 1140px;
  margin-inline: auto;
  padding-inline: 1.5rem;
}

/* ==========================================================================
   TRANSLUCENT FLOATING APPLE NAVIGATION
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  background-color: var(--apple-chrome);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-hairline);
  transition: background-color var(--duration-fast) var(--ease-out), border-color var(--duration-fast) var(--ease-out);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.brand-glyph {
  font-size: 1.15rem;
  color: var(--text-primary);
}

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

.nav-menu a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  transition: color var(--duration-fast) var(--ease-out);
}

.nav-menu a:hover {
  color: var(--text-primary);
}

/* Emil Kowalski Press Feedback: scale(0.97) */
.btn-apple {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.55rem 1.15rem;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform var(--duration-fast) var(--ease-out), background-color var(--duration-fast) var(--ease-out);
}

.btn-apple:active {
  transform: scale(0.97);
}

.btn-apple-primary {
  background-color: var(--apple-blue);
  color: #FFFFFF;
}

@media (hover: hover) and (pointer: fine) {
  .btn-apple-primary:hover {
    background-color: var(--apple-blue-hover);
  }
}

.btn-apple-secondary {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border-color: var(--border-hairline);
}

@media (hover: hover) and (pointer: fine) {
  .btn-apple-secondary:hover {
    background-color: rgba(255, 255, 255, 0.12);
    border-color: var(--border-subtle);
  }
}

/* ==========================================================================
   HERO KEYNOTE SECTION (Apple Product Reveal Style)
   ========================================================================== */
.hero-stage {
  padding-top: clamp(4rem, 3.5rem + 5vw, 6.5rem);
  padding-bottom: clamp(3rem, 2.5rem + 4vw, 5rem);
  text-align: center;
  position: relative;
}

.hero-supertitle {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--apple-cyan);
  margin-bottom: 0.85rem;
}

.hero-main-title {
  font-size: clamp(2.2rem, 1.6rem + 2.6vw, 3.8rem);
  line-height: 1.22;
  letter-spacing: -0.022em;
  font-weight: 700;
  max-width: 20ch;
  margin-inline: auto;
  margin-bottom: 1.5rem;
  padding-bottom: 0.15em; /* Previene corte del trazo inferior en letras como la g */
}

.hero-subtext {
  font-size: clamp(1.05rem, 0.95rem + 0.4vw, 1.25rem);
  line-height: 1.65;
  letter-spacing: -0.008em;
  color: var(--text-secondary);
  max-width: 46ch;
  margin-inline: auto;
  margin-bottom: 2.25rem;
  padding-bottom: 0.1em;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3.5rem;
}

/* ==========================================================================
   INTERACTIVE SAFARI DEVICE PREVIEW FRAME
   ========================================================================== */
.mockup-viewport {
  max-width: 960px;
  margin-inline: auto;
  background-color: #121216;
  border-radius: 20px;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 30px 80px -20px rgba(0, 0, 0, 0.9);
  overflow: hidden;
  transition: transform 0.3s var(--ease-out), border-color 0.3s var(--ease-out);
}

.mockup-header-bar {
  display: flex;
  align-items: center;
  padding: 0.75rem 1.25rem;
  background-color: #1C1C22;
  border-bottom: 1px solid var(--border-hairline);
  gap: 1rem;
}

.mockup-traffic-lights {
  display: flex;
  gap: 7px;
}

.traffic-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.dot-red { background-color: #FF5F56; }
.dot-yellow { background-color: #FFBD2E; }
.dot-green { background-color: #27C93F; }

.mockup-url-pill {
  flex: 1;
  max-width: 420px;
  margin-inline: auto;
  background-color: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-xs);
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.mockup-canvas {
  padding: clamp(2rem, 1.5rem + 3vw, 3.5rem);
  min-height: 380px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  background-color: #0A0A0E;
  transition: background-color 0.4s var(--ease-out);
}

.mockup-tag {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--apple-cyan);
  margin-bottom: 0.5rem;
}

.mockup-site-title {
  font-size: clamp(1.6rem, 1.2rem + 1.8vw, 2.5rem);
  font-weight: 700;
  line-height: 1.25;
  padding-bottom: 0.1em;
  margin-bottom: 0.75rem;
  max-width: 20ch;
}

.mockup-site-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 44ch;
  margin-bottom: 1.75rem;
}

.mockup-cta-row {
  display: flex;
  gap: 0.75rem;
}

/* ==========================================================================
   APPLE BENTO GRID SECTION
   ========================================================================== */
.bento-section {
  padding-block: clamp(4rem, 3rem + 5vw, 6.5rem);
}

.section-tagline {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--apple-cyan);
  margin-bottom: 0.5rem;
}

.section-lead-title {
  font-size: clamp(1.85rem, 1.4rem + 1.8vw, 2.75rem);
  letter-spacing: -0.02em;
  line-height: 1.25;
  padding-bottom: 0.1em;
  margin-bottom: 1rem;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.bento-card {
  background-color: var(--apple-card);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  position: relative;
  overflow: hidden;
  transition: border-color var(--duration-medium) var(--ease-out), transform var(--duration-medium) var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .bento-card:hover {
    border-color: var(--border-subtle);
    transform: translateY(-2px);
  }
}

.bento-span-8 {
  grid-column: span 8;
}

.bento-span-4 {
  grid-column: span 4;
}

.bento-span-6 {
  grid-column: span 6;
}

.bento-card-title {
  font-size: 1.45rem;
  line-height: 1.3;
  padding-bottom: 0.05em;
  margin-bottom: 0.65rem;
}

.bento-metric-large {
  font-size: clamp(3rem, 2.5rem + 3vw, 4.5rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.15;
  padding-bottom: 0.05em;
  margin-bottom: 0.5rem;
  letter-spacing: -0.04em;
}

/* ==========================================================================
   APPLE STORE CONFIGURE WORKFLOW (Interactive Form)
   Formspree Action: https://formspree.io/f/mnppneyp
   ========================================================================== */
.config-section {
  padding-block: clamp(4rem, 3rem + 5vw, 7rem);
  border-top: 1px solid var(--border-hairline);
}

.config-step {
  margin-bottom: 3.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-hairline);
}

.config-step-header {
  margin-bottom: 1.5rem;
}

.config-step-num {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--apple-cyan);
  display: block;
  margin-bottom: 0.25rem;
}

.config-step-title {
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.3;
  padding-bottom: 0.05em;
  color: var(--text-primary);
}

.config-step-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

/* Segmented Options Grid */
.apple-options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
}

.apple-option-card {
  position: relative;
  background-color: var(--apple-card);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  cursor: pointer;
  transition: border-color var(--duration-fast) var(--ease-out), background-color var(--duration-fast) var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .apple-option-card:hover {
    border-color: var(--border-subtle);
  }
}

.apple-option-card:has(input:checked) {
  border-color: var(--apple-blue);
  background-color: rgba(0, 113, 227, 0.08);
}

.apple-option-card input[type="radio"],
.apple-option-card input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border: 1.5px solid var(--text-tertiary);
  border-radius: 50%;
  outline: none;
  background-color: transparent;
  cursor: pointer;
  margin-bottom: 0.85rem;
  display: grid;
  place-content: center;
  transition: border-color var(--duration-fast) var(--ease-out);
}

.apple-option-card input[type="checkbox"] {
  border-radius: 5px;
}

.apple-option-card input[type="radio"]::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  transform: scale(0);
  background-color: var(--apple-blue);
  transition: transform 0.15s var(--ease-out);
}

.apple-option-card input[type="checkbox"]::before {
  content: "✓";
  font-size: 11px;
  font-weight: 800;
  color: #FFFFFF;
  transform: scale(0);
  transition: transform 0.15s var(--ease-out);
}

.apple-option-card input:checked::before {
  transform: scale(1);
}

.apple-option-card input:checked {
  border-color: var(--apple-blue);
  background-color: var(--apple-blue);
}

.apple-option-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.35;
  padding-bottom: 0.1em;
  margin-bottom: 0.3rem;
  display: block;
}

.apple-option-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
  display: block;
}

/* Style Swatches Pill Selection */
.style-swatches-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.style-swatch-item {
  background-color: var(--apple-card);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  cursor: pointer;
  transition: border-color var(--duration-fast) var(--ease-out);
}

.style-swatch-item:hover {
  border-color: var(--border-subtle);
}

.style-swatch-item.active {
  border-color: var(--apple-cyan);
  background-color: rgba(41, 151, 255, 0.06);
}

.swatch-circle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  margin-bottom: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.circle-titanium { background-color: #9A958E; }
.circle-black { background-color: #1F1F24; }
.circle-blue { background-color: #212B3B; }
.circle-gold { background-color: #D6CAAB; }

/* Budget Interactive Module */
.apple-budget-card {
  background-color: var(--apple-card);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.budget-val-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 1.25rem;
}

.budget-giant-num {
  font-size: clamp(2.5rem, 2rem + 2.5vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text-primary);
}

.budget-tier-pill {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--apple-cyan);
  background-color: rgba(41, 151, 255, 0.1);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
}

input[type="range"] {
  width: 100%;
  height: 6px;
  background-color: #2C2C2E;
  border-radius: var(--radius-pill);
  outline: none;
  cursor: pointer;
  accent-color: var(--apple-blue);
}

.tier-pills-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.5rem;
}

.tier-pill-btn {
  padding: 0.45rem 1rem;
  background-color: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-pill);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.tier-pill-btn:hover, .tier-pill-btn.active {
  background-color: var(--apple-blue);
  color: #FFFFFF;
  border-color: var(--apple-blue);
}

/* Contact Inputs */
.contact-row-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.input-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 1.25rem;
}

.input-label {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--text-primary);
}

.input-hint {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  margin-bottom: 0.35rem;
}

input[type="text"],
input[type="tel"],
input[type="email"],
textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  background-color: #121216;
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--duration-fast) var(--ease-out), background-color var(--duration-fast) var(--ease-out);
}

input:focus, textarea:focus {
  border-color: var(--border-focus);
  background-color: #18181E;
}

/* User-invalid feedback */
.field-error-msg {
  display: none;
  color: var(--apple-error);
  font-size: 0.825rem;
  margin-top: 0.4rem;
  font-weight: 500;
}

input:user-invalid, textarea:user-invalid {
  border-color: var(--apple-error);
  background-color: var(--apple-error-bg);
}

input:user-invalid + .field-error-msg,
textarea:user-invalid + .field-error-msg {
  display: block;
}

/* Final Submit Button (Full Apple Store Order Button) */
.submit-apple-order {
  width: 100%;
  padding: 1.15rem;
  background-color: var(--apple-blue);
  color: #FFFFFF;
  border-radius: var(--radius-pill);
  font-size: 1.05rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-out), background-color var(--duration-fast) var(--ease-out);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 2rem;
}

.submit-apple-order:active {
  transform: scale(0.98);
}

.submit-apple-order:hover {
  background-color: var(--apple-blue-hover);
}

/* ==========================================================================
   APPLE FAQ ACCORDION
   ========================================================================== */
.faq-wrap {
  max-width: 780px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2rem;
}

details.apple-faq {
  border-bottom: 1px solid var(--border-hairline);
  padding-bottom: 1.25rem;
}

summary.apple-faq-q {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
  user-select: none;
}

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

summary.apple-faq-q svg {
  width: 18px;
  height: 18px;
  color: var(--text-tertiary);
  transition: transform 0.2s var(--ease-out);
}

details.apple-faq[open] summary.apple-faq-q svg {
  transform: rotate(180deg);
  color: var(--apple-cyan);
}

.apple-faq-a {
  margin-top: 0.85rem;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* Floating WhatsApp Button */
.apple-wa-fab {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background-color: #25D366;
  color: #FFFFFF;
  display: grid;
  place-items: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  text-decoration: none;
  transition: transform var(--duration-fast) var(--ease-out);
}

.apple-wa-fab:active {
  transform: scale(0.92);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border-hairline);
  background-color: var(--apple-dark);
  padding-block: 3.5rem 2rem;
  font-size: 0.85rem;
  color: var(--text-tertiary);
}

.footer-nav {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.footer-legal {
  border-top: 1px solid var(--border-hairline);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

@media (max-width: 800px) {
  .bento-span-8, .bento-span-4, .bento-span-6 {
    grid-column: span 12;
  }
  .nav-menu {
    display: none;
  }
}