/*Reset & Base*/
*, *::before, *::after {
  margin: 0; padding: 0;
  box-sizing: border-box;
  font-family: 'Montserrat', sans-serif;
}
html, body {
  width: 100%; height: 100%;
  overflow-x: hidden;
  background: #fbf8f4;
}

/* Variables  */
:root {
  --dark:     #0B1F3A;
  --blue:     #18A8E8;
  --grad:     linear-gradient(135deg, #0E2A66, #0E2A66);
  --light-bg: #F4F7FB;
  --white:    #ffffff;
  --border:   #D7E2F0;
  --input-bg: #F8FAFD;
  --text:     #1B2430;
  --muted:    #5F6B7A;
}

/*  Toda la pantalla */
.rk-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  /*background: var(--light-bg);*/
  background: #0E2A66;
  /* SVG codificado */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 810' preserveAspectRatio='none'%3E%3Cpath fill='%2318a8e8' opacity='0.15' d='M0,224L120,240C240,256,480,288,720,272C960,256,1200,192,1320,160L1440,128L1440,810L1320,810C1200,810,960,810,720,810C480,810,240,810,120,810L0,810Z'/%3E%3Cpath fill='%2300e5ff' opacity='0.12' d='M0,416L120,400C240,384,480,352,720,368C960,384,1200,448,1320,480L1440,512L1440,810L1320,810C1200,810,960,810,720,810C480,810,240,810,120,810L0,810Z'/%3E%3C/svg%3E");
  background-size: cover;
  background-position: center bottom;
  background-repeat: no-repeat;
  background-attachment: fixed;
  
  padding: 24px;
}

/* Card contenedor*/
.rk-card {
  position: relative;
  overflow: hidden;
  width: 800px;
  max-width: 100%;
  min-height: 500px;
  background: var(--white);
  border-radius: 32px;
  box-shadow:
    0 8px 48px rgba(11,31,58,.14),
    0 2px 10px rgba(24,168,232,.08);
}

/* Progress bar */
.rk-loader {
  display: none;
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 4px;
  background: rgba(24,168,232,.15);
  border-radius: 32px 32px 0 0;
  overflow: hidden;
  z-index: 300;
}
.rk-loader-bar {
  height: 100%;
  width: 55%;
  background: var(--grad);
  border-radius: 4px;
  animation: loaderSlide 1.1s ease-in-out infinite;
}
@keyframes loaderSlide {
  0%   { transform: translateX(-120%); }
  100% { transform: translateX(250%);  }
}

/*  Form side (izquierda) */
.rk-form-side {
  position: absolute;
  top: 0; left: 0;
  width: 50%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  transition: transform .65s cubic-bezier(.77,0,.18,1);
}


.rk-card.active .rk-form-side {
  transform: translateX(100%);
}

/* Form interior*/
.rk-form {
  width: 100%;
  padding: 44px 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.rk-logo {
  width: 190px;
  max-width: 100%;
  margin-bottom: 22px;
  object-fit: contain;
}

.rk-subtitle {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 26px;
  text-align: center;
  line-height: 1.5;
}

/* Inputs */
.rk-input {
  width: 100%;
  padding: 14px 16px;
  margin-bottom: 14px;
  border: 1.5px solid var(--border);
  border-radius: 13px;
  background: var(--input-bg);
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: border-color .25s, box-shadow .25s;
}
.rk-input::placeholder { color: #A8B5C4; }
.rk-input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(24,168,232,.13);
}

/* Password wrapper */
.rk-pass-wrap {
  position: relative;
  width: 100%;
  margin-bottom: 8px;
}
.rk-pass-wrap .rk-input {
  padding-right: 44px;
  margin-bottom: 0;
}
.rk-eye {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  cursor: pointer;
  font-size: 18px;
  opacity: .55;
  user-select: none;
  transition: opacity .2s;
  line-height: 1;
}
.rk-eye:hover { opacity: 1; }

/* Mensaje */
.rk-msg {
  font-size: 13px;
  font-weight: 600;
  min-height: 20px;
  margin: 8px 0 14px;
  text-align: center;
  width: 100%;
  color: #ff4d4d;
  transition: color .3s;
}

/* Botón submit */
.rk-btn {
  width: 100%;
  padding: 15px;
  border: none;
  border-radius: 14px;
  background: var(--grad);
  color: var(--white);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .8px;
  cursor: pointer;
  box-shadow: 0 8px 22px rgba(24,168,232,.3);
  transition: transform .2s, box-shadow .2s;
}
.rk-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(24,168,232,.38);
  background:gold;
  color: black;
}
.rk-btn:active { transform: translateY(0); }


/*  Toggle side (derecha)*/
.rk-toggle-wrap {
  position: absolute;
  top: 0; left: 50%;
  width: 50%; height: 100%;
  overflow: hidden;
  border-radius: 130px 0 0 130px;
  z-index: 100;
  transition: transform .65s cubic-bezier(.77,0,.18,1),
              border-radius .65s cubic-bezier(.77,0,.18,1);
}
.rk-card.active .rk-toggle-wrap {
  transform: translateX(-100%);
  border-radius: 0 130px 130px 0;
}

.rk-toggle {
  height: 100%;
  width: 200%;
  position: relative;
  left: -100%;
  background: linear-gradient(155deg, #000c28 50%, var(--blue) 90%);
  transition: transform .65s cubic-bezier(.77,0,.18,1);
}
.rk-card.active .rk-toggle { transform: translateX(50%); }

/* Paneles dentro del toggle */
.rk-toggle-panel {
  position: absolute;
  top: 0;
  width: 50%; height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0 36px;
  text-align: center;
  gap: 16px;
  color: var(--white);
  transition: transform .65s cubic-bezier(.77,0,.18,1);
}

/* Panel izquierdo del toggle */
.rk-toggle-left  { transform: translateX(-200%); left: 0; }
.rk-card.active .rk-toggle-left  { transform: translateX(0); }

/* Panel derecho del toggle  */
.rk-toggle-right { transform: translateX(0); right: 0; }
.rk-card.active .rk-toggle-right { transform: translateX(200%); }

.rk-toggle-panel h2 {
  font-size: 23px;
  font-weight: 900;
  letter-spacing: 1.5px;
  line-height: 1.2;
}
.rk-toggle-panel p {
  font-size: 13px;
  opacity: .85;
  line-height: 1.65;
}

/* Icono grande en el toggle */
.rk-icon-big {
  font-size: 58px;
  filter: drop-shadow(0 0 16px rgba(255,255,255,.35));
  margin-bottom: 4px;
}

/* Separador decorativo */
.rk-separator {
  width: 48px;
  height: 3px;
  background: rgba(255,255,255,.45);
  border-radius: 3px;
}

/* Footer */
.rk-footer {
  margin-top: 26px;
  font-size: 11px;
  color: white;
  letter-spacing: 3.5px;
  font-weight: 600;
  text-align: center;
}

/* Responsive*/
@media (max-width: 620px) {
  .rk-card {
    min-height: auto;
    border-radius: 24px;
  }
  .rk-form-side {
    width: 100%;
    position: relative;
  }
  .rk-toggle-wrap {
    display: none;
  }
  .rk-form {
    padding: 36px 28px;
  }
  .rk-logo {
    width: 150px;
  }
}