/* ==========================================
   ESTILOS ULTRA-PREMIUM V3 - JK ENERGY
   ========================================== */
:root {
    --jk-green: #198754;
    --jk-light: #2ecc71;
    --jk-glow: rgba(25, 135, 84, 0.4);
    --bg-dark: #070809;
}

body {
    margin: 0;
    background-color: var(--bg-dark);
    /* Fondo base que será actualizado por el JS */
    background: radial-gradient(circle at 50% 50%, #1a3d2b 0%, var(--bg-dark) 70%);
    font-family: 'Plus Jakarta Sans', sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    overflow: hidden;
}

/* CONTENEDOR CON BORDE ANIMADO (BORDER BEAM) */
.login-wrapper {
    position: relative;
    padding: 3px; /* El grosor del rayo eléctrico */
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.03);
    overflow: hidden; /* Corta el haz de luz para que solo se vea en el borde */
}

/* El Rayo que recorre todo el borde */
.login-wrapper::before {
    content: "";
    position: absolute;
    width: 150%;
    height: 150%;
    background: conic-gradient(
        from 0deg,
        transparent 70%,
        var(--jk-green),
        var(--jk-light),
        #fff,
        var(--jk-green)
    );
    animation: rotate-electric 4s linear infinite;
    top: -25%;
    left: -25%;
}

@keyframes rotate-electric {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.login-card {
    position: relative;
    background: #0f1113;
    padding: 50px 45px;
    border-radius: 21px;
    width: 390px;
    z-index: 5;
    backdrop-filter: blur(15px);
}

/* ICONOS LINEALES (OUTLINE) Y REFINADOS */
.input-field-group {
    position: relative;
    margin-bottom: 25px;
}

.input-field-group i {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: #444;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.form-control {
    background: rgba(0, 0, 0, 0.4) !important;
    border: 1px solid rgba(255, 255, 255, 0.08) !important;
    border-radius: 14px !important;
    padding: 14px 15px 14px 50px !important;
    color: white !important;
    transition: all 0.3s ease !important;
}

.form-control:focus {
    border-color: var(--jk-green) !important;
    box-shadow: 0 0 15px rgba(25, 135, 84, 0.15) !important;
    background: rgba(25, 135, 84, 0.03) !important;
}

/* El icono se ilumina cuando el input está en foco */
.form-control:focus + i {
    color: var(--jk-green);
    filter: drop-shadow(0 0 5px var(--jk-green));
}

.btn-premium {
    background: var(--jk-green);
    border: none;
    border-radius: 14px;
    padding: 16px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    width: 100%;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-premium:hover {
    background: #1da367;
    box-shadow: 0 0 25px var(--jk-glow);
    transform: translateY(-2px);
}