/* ==========================================================================
   VARIABLES DE DISEÑO (DEFAULT: DARK MODE)
   ========================================================================== */
:root {
  --bg-color: #0a0a0c;
  --blob-1: #0a84ff;
  --blob-2: #bf5af2;
  --blob-opacity: 0.4;
  
  --glass-bg: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: rgba(0, 0, 0, 0.5);
  --glass-highlight: rgba(255, 255, 255, 0.05);
  
  --text-main: #ffffff;
  --text-sub: #8e8e93;
  --input-bg: rgba(255, 255, 255, 0.05);
  --btn-bg: rgba(255, 255, 255, 0.12);
  --btn-border: rgba(255, 255, 255, 0.15);
  --btn-text: #ffffff;
  --btn-hover-bg: #ffffff;
  --btn-hover-text: #0a0a0c;
  
  --accent-blue: #0a84ff;
  --accent-glow: rgba(10, 132, 255, 0.3);
  --avatar-circle-bg: #111a24;
  
  --error-color: #ff375f;
  --error-glow: rgba(255, 55, 95, 0.3);
}

/* ==========================================================================
   VARIABLES DE DISEÑO (LIGHT MODE)
   ========================================================================== */
body.light-mode {
  --bg-color: #f2f2f7;
  --blob-1: #007aff;
  --blob-2: #af52de;
  --blob-opacity: 0.25;
  
  --glass-bg: rgba(255, 255, 255, 0.45);
  --glass-border: rgba(0, 0, 0, 0.06);
  --glass-shadow: rgba(0, 0, 0, 0.08);
  --glass-highlight: rgba(255, 255, 255, 0.6);
  
  --text-main: #1c1c1e;
  --text-sub: #68686e;
  --input-bg: rgba(0, 0, 0, 0.04);
  --btn-bg: #1c1c1e;
  --btn-border: transparent;
  --btn-text: #ffffff;
  --btn-hover-bg: #007aff;
  --btn-hover-text: #ffffff;
  
  --accent-blue: #007aff;
  --accent-glow: rgba(0, 122, 255, 0.2);
  --avatar-circle-bg: #e5f1fa;
  
  --error-color: #ff375f;
  --error-glow: rgba(255, 55, 95, 0.25);
}

/* ==========================================================================
   ESTILOS BASE & COMPORTAMIENTO RESPONSIVO (iOS STYLE)
   ========================================================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  background-color: var(--bg-color);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  -webkit-font-smoothing: antialiased;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
  transition: background-color 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

/* Fondo Mesh con gradientes líquidos */
body::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(circle 45vw at 20% 25%, var(--blob-1), transparent),
    radial-gradient(circle 40vw at 80% 75%, var(--blob-2), transparent);
  opacity: var(--blob-opacity);
  filter: blur(70px);
  z-index: 0;
  transition: opacity 0.4s ease, background 0.4s ease;
}

/* ==========================================================================
   BOTÓN CONMUTADOR DE TEMA (THEME TOGGLE)
   ========================================================================== */
.theme-toggle-btn {
  position: absolute;
  top: calc(20px + env(safe-area-inset-top));
  right: calc(20px + env(safe-area-inset-right));
  z-index: 10;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px var(--glass-shadow);
  transition: transform 0.2s ease, background-color 0.3s, color 0.3s;
}

.theme-toggle-btn:hover {
  transform: scale(1.05);
}

.theme-toggle-btn:active {
  transform: scale(0.92);
}

.theme-toggle-btn:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 2px;
}

.theme-toggle-btn svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: none;
}

body.light-mode .sun-icon { 
  display: none; 
}

body:not(.light-mode) .moon-icon { 
  display: none; 
}

/* ==========================================================================
   CONTENEDOR DEL FORMULARIO
   ========================================================================== */
/* ==========================================================================
   SPLIT LAYOUT (panel izquierdo + form)
   ========================================================================== */
.split-layout {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: stretch;
  border-radius: 32px;
  overflow: hidden;
  box-shadow:
    0 30px 60px -15px var(--glass-shadow),
    inset 0 1px 2px var(--glass-highlight);
  transition: box-shadow 0.4s;
}

/* ==========================================================================
   PANEL IZQUIERDO DE PRESENTACIÓN
   ========================================================================== */
.left-panel {
  width: 300px;
  flex-shrink: 0;
  background: #0d0d10;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

/* Blobs decorativos del panel */
.left-panel::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle 160px at 15% 20%, rgba(10, 132, 255, 0.18), transparent),
    radial-gradient(circle 130px at 85% 85%, rgba(191, 90, 242, 0.14), transparent);
  pointer-events: none;
  z-index: 0;
}

.lp-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
}

/* Brand */
.lp-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.lp-brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: #0a84ff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.lp-brand-icon svg {
  width: 20px;
  height: 20px;
}

.lp-brand-name {
  font-size: 1.2rem;
  font-weight: 600;
  color: #ffffff;
  letter-spacing: -0.2px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif;
}

/* Badge */
.lp-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(10, 132, 255, 0.1);
  border: 1px solid rgba(10, 132, 255, 0.22);
  border-radius: 20px;
  padding: 5px 12px;
  width: fit-content;
}

.lp-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #0a84ff;
  flex-shrink: 0;
}

.lp-badge span {
  font-size: 0.72rem;
  color: #4da6ff;
  font-weight: 500;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif;
  white-space: nowrap;
}

/* Tagline */
.lp-tagline {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.35);
  line-height: 1.65;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif;
}

/* Features */
.lp-features {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.lp-feature {
  display: flex;
  align-items: flex-start;
  gap: 11px;
}

.lp-feat-icon {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  display: flex;
  align-items: center;
  justify-content: center;
}

.lp-feat-icon svg {
  width: 16px;
  height: 16px;
}

.lp-feat-text {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding-top: 3px;
}

.lp-feat-title {
  font-size: 0.82rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.78);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif;
}

.lp-feat-sub {
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.28);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif;
}

/* Footer del panel */
.lp-footer {
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.15);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* Mobile: ocultar panel, split-layout transparente */
@media (max-width: 479px) {
  .split-layout {
    display: contents;
  }
  .left-panel {
    display: none;
  }
}

@media (max-width: 479px) {
  form {
    max-width: 100%;
    height: 100%;
    border-radius: 0;
    border: none;
    display: flex;
    justify-content: center;
    padding: 3em 2em calc(2em + env(safe-area-inset-bottom));
    overflow-y: auto;
  }
  form > div.wrapper-inner {
    width: 100%;
    margin: auto 0;
  }
}

@media (min-width: 480px) {
  form {
    max-width: 410px;
    padding: 2.5em;
    border-radius: 32px;
  }
}

/* ==========================================================================
   CONTENEDOR DEL AVATAR & PROPIEDADES SVG (CORREGIDO PARA GSAP)
   ========================================================================== */
form .svgContainer {
  position: relative;
  width: 170px;
  height: 170px;
  margin: 0 auto 1.8em;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.15);
  border: 1px solid var(--glass-border);
  box-shadow: inset 0 4px 12px rgba(0, 0, 0, 0.2);
  overflow: hidden;
}

body.light-mode form .svgContainer {
  background: rgba(255, 255, 255, 0.4);
}

form .svgContainer div {
  position: relative;
  width: 100%;
  height: 0;
  padding-bottom: 100%;
}

form .svgContainer .mySVG {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

#avatarBgCircle {
  fill: var(--avatar-circle-bg);
  transition: fill 0.4s ease;
}

/* Puntos de pivote para animaciones GSAP de los brazos */
form .svgContainer .armL {
  transform-origin: top left;
}

form .svgContainer .armR {
  transform-origin: top right;
}

/* ==========================================================================
   INPUT GROUPS & CAMPOS DE TEXTO
   ========================================================================== */
form .inputGroup {
  margin-bottom: 1.4em;
  position: relative;
}

form .inputGroup:last-of-type {
  margin-bottom: 0;
}

form label {
  margin-bottom: 6px;
  display: block;
  font-size: 0.85rem;
  color: var(--text-sub);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  transition: color 0.25s ease;
}

form .inputGroup:focus-within label {
  color: var(--accent-blue);
}

form input[type='text'], 
form input[type='password'] {
  display: block;
  padding: 18px 1em 0px;
  background-color: var(--input-bg);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  width: 100%;
  height: 58px;
  font-size: 1.15rem;
  line-height: 1.2;
  color: var(--text-main);
  font-weight: 500;
  font-family: inherit;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  transition: border-color 0.25s, box-shadow 0.25s, background-color 0.25s, color 0.25s;
}

form input::placeholder {
  color: transparent;
  transition: color 0.25s;
}

form input:focus::placeholder {
  color: var(--text-sub);
  opacity: 0.4;
}

form input[type='text']:focus, 
form input[type='password']:focus {
  background-color: rgba(255, 255, 255, 0.02);
  border-color: var(--accent-blue);
  box-shadow: 0 0 14px var(--accent-glow);
}

form input[type='text']:focus-visible, 
form input[type='password']:focus-visible {
  outline: none;
}

body.light-mode form input[type='text']:focus, 
body.light-mode form input[type='password']:focus {
  background-color: #ffffff;
}

/* ==========================================================================
   ESTADOS DE ERROR EN INPUTS
   ========================================================================== */
form input.error {
  border-color: var(--error-color);
  box-shadow: 0 0 14px var(--error-glow);
}

form .inputGroup .error-message {
  color: var(--error-color);
  font-size: 0.75rem;
  margin-top: 6px;
  padding-left: 4px;
  font-weight: 500;
  display: none;
  animation: fadeIn 0.2s ease;
}

form .inputGroup.error .error-message {
  display: block;
}

@keyframes fadeIn {
  from { 
    opacity: 0; 
    transform: translateY(-4px); 
  }
  to { 
    opacity: 1; 
    transform: translateY(0); 
  }
}

/* ==========================================================================
   LÓGICA DEL TEXTO FLOTANTE (CALCULADO POR JS)
   ========================================================================== */
form .inputGroup1 .helper {
  position: absolute;
  z-index: 1;
  font-family: inherit;
  pointer-events: none;
}

form .inputGroup1 .helper1 {
  top: 18px;
  left: 1em;
  color: var(--text-sub);
  font-size: 1.1rem;
  font-weight: 400;
  opacity: 0.5;
  transform-origin: top left;
  transition: transform 0.2s cubic-bezier(0.25, 1, 0.5, 1), 
              opacity 0.2s ease, 
              color 0.2s ease;
}

form .inputGroup1.focusWithText .helper1 {
  transform: translateY(-9px) scale(0.72);
  opacity: 0.8;
  color: var(--accent-blue);
}

/* Regla oculta necesaria para calcular el ancho dinámico del texto en main.js */
.reference-div {
  position: absolute;
  visibility: hidden;
  height: auto;
  width: auto;
  white-space: nowrap;
  font-size: 1.15rem;
  font-weight: 500;
  pointer-events: none;
}

/* ==========================================================================
   BOTÓN SUBMIT (ESTILO DE ACCIÓN PREMIUM)
   ========================================================================== */
form button {
  display: block;
  width: 100%;
  height: 52px;
  background: var(--btn-bg);
  border: 1px solid var(--btn-border);
  border-radius: 14px;
  font-size: 1.05rem;
  color: var(--btn-text);
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transition: background 0.25s, color 0.25s, transform 0.1s, border-color 0.25s;
  -webkit-appearance: none;
  appearance: none;
}

form button:hover {
  background: var(--btn-hover-bg);
  color: var(--btn-hover-text);
  border-color: var(--btn-hover-bg);
}

form button:active {
  transform: scale(0.97);
}

form button:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 2px;
}

form button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* ==========================================================================
   UTILIDADES EXTRA PARA ANIMACIONES Y EFECTOS
   ========================================================================== */

/* Reducción de movimiento para usuarios que lo prefieran */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Mejora de scroll en iOS */
@supports (-webkit-overflow-scrolling: touch) {
  form {
    -webkit-overflow-scrolling: touch;
  }
}