:root {
  --brand: #14b5d1;
  --brand-dark: #0d9ab3;
  --text-title: #5a5e64;
  --text-input: #6a6a6a;
  --text-placeholder: #b8b8b8;
  --text-forgot: #a9a9a9;
  --line: #cfcfcf;
  --panel: rgba(255,255,255,.75);
  --shadow: 0 20px 60px rgba(0,0,0,.12);
}

* { box-sizing: border-box; }
html, body { height: 100%; }

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #ffffff;
}

.login {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.1fr 1.1fr;
}

/* ---- LADO IZQUIERDO ---- */
.login__left {
  background: radial-gradient(1200px 700px at 20% 15%, rgba(255,255,255,.95), rgba(230,245,248,.75));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px 34px;
  position: relative;
  overflow: hidden;
}

/* Círculos decorativos */
.login__left::before {
  content: "";
  position: absolute;
  width: 300px;
  height: 300px;
  background: rgba(20, 181, 209, 0.07);
  border-radius: 50%;
  top: -60px;
  right: -60px;
  animation: floatBubble 6s ease-in-out infinite;
}

.login__left::after {
  content: "";
  position: absolute;
  width: 180px;
  height: 180px;
  background: rgba(20, 181, 209, 0.05);
  border-radius: 50%;
  bottom: 30px;
  left: -50px;
  animation: floatBubble 8s ease-in-out infinite reverse;
}

/* ---- PANEL ---- */
.panel {
  width: min(420px, 100%);
  padding: clamp(18px, 3.2vw, 36px);
  border-radius: 28px;
  background: var(--panel);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
  border: 1px solid rgba(255,255,255,.6);
  position: relative;
  z-index: 1;
  animation: slideUp 0.7s ease forwards;
}

/* ---- LOGO ---- */
.brand {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  height: 80px;
  margin-bottom: 20px;
  animation: fadeDown 0.6s ease forwards;
}

.brand__logo {
  width: 450px;
  height: auto;
  display: block;
  object-fit: contain;
  transform: translate(-90px, -5px);
  pointer-events: none;
}

/* ---- TÍTULO ---- */
h1 {
  margin: 0 0 25px;
  font-size: 56px;
  line-height: 0.95;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--text-title);
  animation: fadeLeft 0.6s ease 0.15s both;
}

/* ---- FORMULARIO ---- */
.form { width: 100%; }

.field {
  display: block;
  margin-bottom: 16px;
  animation: fadeLeft 0.6s ease both;
}

.field:nth-child(1) { animation-delay: 0.25s; }
.field:nth-child(2) { animation-delay: 0.35s; }

.field input {
  width: 100%;
  height: 52px;
  padding: 0 20px;
  border: 2px solid var(--line);
  border-radius: 999px;
  background: rgba(255,255,255,.80);
  outline: none;
  font-size: 18px;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text-input);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.field input:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(20,181,209,0.15);
  background: #fff;
}

.field input::placeholder { color: var(--text-placeholder); }

/* ---- BOTÓN ---- */
.btn {
  width: 100%;
  height: 55px;
  margin-top: 4px;
  border: none;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  color: #ffffff;
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(20,181,209,0.35);
  transition: transform 0.3s, box-shadow 0.3s;
  animation: fadeUp 0.6s ease 0.45s both;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(20,181,209,0.45);
}

.btn:active { transform: translateY(0); }

/* ---- LINKS ---- */
.forgot {
  width: 100%;
  margin: 18px 0 0;
  text-align: center;
  animation: fadeUp 0.6s ease 0.55s both;
}

.forgot a {
  text-decoration: none;
  color: var(--text-forgot);
  font-size: 14px;
  transition: color 0.2s;
}

.forgot a:hover { color: var(--brand); }

/* ---- LADO DERECHO ---- */
.login__right {
  min-height: 100vh;
  background-image: url("../img/fondo-pagina.png");
  background-size: cover;
  background-position: center;
  animation: zoomFade 1.2s ease forwards;
}

/* ---- OJO ---- */
.password-field {
  position: relative;
  width: 100%;
}

.password-field input {
  width: 100%;
  padding-right: 50px;
}

.input__action {
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--text-placeholder);
  display: flex;
  transition: color 0.2s;
}

.input__action svg { fill: currentColor; }
.input__action:hover { color: var(--brand); }

/* ---- ANIMACIONES ---- */
@keyframes slideUp {
  from { opacity: 0; transform: translateY(40px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeLeft {
  from { opacity: 0; transform: translateX(-20px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-15px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes zoomFade {
  from { opacity: 0; transform: scale(1.06); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes floatBubble {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-20px); }
}

/* ---- RESPONSIVE ---- */
@media (max-width: 900px) {
  .login { grid-template-columns: 1fr; }
  .login__right { min-height: 40vh; order: -1; }
  .login__left { padding: 24px 20px 40px; }
  .panel { width: 100%; }
  .brand__logo { transform: translate(0, 0); width: 200px; margin: 0 auto; }
  h1 { font-size: 42px; margin-bottom: 24px; text-align: center; }
  .field input, .btn, .forgot { width: 100%; }
}